sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- A replacement for the standard libpthread.so. ---*/ |
| 4 | /*--- vg_libpthread.c ---*/ |
| 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 8 | This file is part of Valgrind, an extensible x86 protected-mode |
| 9 | emulator for monitoring program execution on x86-Unixes. |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 10 | |
njn | 0e1b514 | 2003-04-15 14:58:06 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2003 Julian Seward |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 12 | jseward@acm.org |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or |
| 15 | modify it under the terms of the GNU General Public License as |
| 16 | published by the Free Software Foundation; either version 2 of the |
| 17 | License, or (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, but |
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 27 | 02111-1307, USA. |
| 28 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 29 | The GNU General Public License is contained in the file COPYING. |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 30 | */ |
| 31 | |
| 32 | /* ALL THIS CODE RUNS ON THE SIMULATED CPU. |
| 33 | |
| 34 | This is a replacement for the standard libpthread.so. It is loaded |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 35 | as part of the client's image (if required) and directs pthread |
| 36 | calls through to Valgrind's request mechanism. |
| 37 | |
| 38 | A couple of caveats. |
| 39 | |
| 40 | 1. Since it's a binary-compatible replacement for an existing library, |
| 41 | we must take care to used exactly the same data layouts, etc, as |
| 42 | the standard pthread.so does. |
| 43 | |
| 44 | 2. Since this runs as part of the client, there are no specific |
| 45 | restrictions on what headers etc we can include, so long as |
| 46 | this libpthread.so does not end up having dependencies on .so's |
| 47 | which the real one doesn't. |
| 48 | |
| 49 | Later ... it appears we cannot call file-related stuff in libc here, |
| 50 | perhaps fair enough. Be careful what you call from here. Even exit() |
| 51 | doesn't work (gives infinite recursion and then stack overflow); hence |
| 52 | myexit(). Also fprintf doesn't seem safe. |
| 53 | */ |
| 54 | |
sewardj | e12a45f | 2003-03-15 20:03:33 +0000 | [diff] [blame] | 55 | /* Sidestep the normal check which disallows using valgrind.h |
| 56 | directly. */ |
| 57 | #define __VALGRIND_SOMESKIN_H |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 58 | #include "valgrind.h" /* For the request-passing mechanism */ |
sewardj | e12a45f | 2003-03-15 20:03:33 +0000 | [diff] [blame] | 59 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 60 | #include "vg_include.h" /* For the VG_USERREQ__* constants */ |
| 61 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 62 | #define __USE_UNIX98 |
| 63 | #include <sys/types.h> |
| 64 | #include <pthread.h> |
| 65 | #undef __USE_UNIX98 |
| 66 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 67 | #include <unistd.h> |
| 68 | #include <string.h> |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 69 | #include <sys/time.h> |
sewardj | f912dfc | 2002-11-13 21:51:10 +0000 | [diff] [blame] | 70 | #include <sys/stat.h> |
| 71 | #include <sys/poll.h> |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 72 | #include <stdio.h> |
daywalker | 005e7c1 | 2003-10-16 16:14:13 +0000 | [diff] [blame^] | 73 | #include <errno.h> |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 74 | |
sewardj | 705d3cb | 2002-05-23 13:13:12 +0000 | [diff] [blame] | 75 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 76 | # define strong_alias(name, aliasname) \ |
| 77 | extern __typeof (name) aliasname __attribute__ ((alias (#name))); |
| 78 | |
| 79 | # define weak_alias(name, aliasname) \ |
| 80 | extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))); |
| 81 | |
| 82 | |
sewardj | 705d3cb | 2002-05-23 13:13:12 +0000 | [diff] [blame] | 83 | /* --------------------------------------------------------------------- |
| 84 | Forwardses. |
| 85 | ------------------------------------------------------------------ */ |
| 86 | |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 87 | #define WEAK __attribute__((weak)) |
| 88 | |
sewardj | fd7747b | 2002-12-01 10:25:53 +0000 | [diff] [blame] | 89 | static |
| 90 | __inline__ |
| 91 | int is_kerror ( int res ) |
| 92 | { |
| 93 | if (res >= -4095 && res <= -1) |
| 94 | return 1; |
| 95 | else |
| 96 | return 0; |
| 97 | } |
| 98 | |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 99 | |
| 100 | #ifdef GLIBC_2_3 |
| 101 | /* kludge by JRS (not from glibc) ... */ |
| 102 | typedef void* __locale_t; |
| 103 | |
| 104 | /* Copied from locale/locale.h in glibc-2.2.93 sources */ |
| 105 | /* This value can be passed to `uselocale' and may be returned by |
| 106 | it. Passing this value to any other function has undefined |
| 107 | behavior. */ |
| 108 | # define LC_GLOBAL_LOCALE ((__locale_t) -1L) |
| 109 | extern __locale_t __uselocale ( __locale_t ); |
| 110 | #endif |
| 111 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 112 | static |
| 113 | void init_libc_tsd_keys ( void ); |
| 114 | |
sewardj | 705d3cb | 2002-05-23 13:13:12 +0000 | [diff] [blame] | 115 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 116 | /* --------------------------------------------------------------------- |
| 117 | Helpers. We have to be pretty self-sufficient. |
| 118 | ------------------------------------------------------------------ */ |
| 119 | |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 120 | /* Number of times any given error message is printed. */ |
| 121 | #define N_MOANS 3 |
| 122 | |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 123 | /* Extract from Valgrind the value of VG_(clo_trace_pthread_level). |
| 124 | Returns 0 (none) if not running on Valgrind. */ |
| 125 | static |
| 126 | int get_pt_trace_level ( void ) |
| 127 | { |
| 128 | int res; |
| 129 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 130 | VG_USERREQ__GET_PTHREAD_TRACE_LEVEL, |
| 131 | 0, 0, 0, 0); |
| 132 | return res; |
| 133 | } |
| 134 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 135 | static |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 136 | void my_exit ( int arg ) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 137 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 138 | VG_(do_syscall)(__NR_exit, arg); |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 139 | /*NOTREACHED*/ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 140 | } |
| 141 | |
sewardj | e0cfe2a | 2002-11-30 14:04:45 +0000 | [diff] [blame] | 142 | /* Apparently unused. |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 143 | static |
| 144 | void my_write ( int fd, const void *buf, int count ) |
| 145 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 146 | VG_(do_syscall)(__NR_write, fd, (int)buf, count ); |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 147 | } |
sewardj | e0cfe2a | 2002-11-30 14:04:45 +0000 | [diff] [blame] | 148 | */ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 149 | |
sewardj | 68b2dd9 | 2002-05-10 21:03:56 +0000 | [diff] [blame] | 150 | /* We need this guy -- it's in valgrind.so. */ |
| 151 | extern void VG_(startup) ( void ); |
| 152 | |
| 153 | |
| 154 | /* Just start up Valgrind if it's not already going. VG_(startup)() |
| 155 | detects and ignores second and subsequent calls. */ |
sewardj | 604ec3c | 2002-04-18 22:38:41 +0000 | [diff] [blame] | 156 | static __inline__ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 157 | void ensure_valgrind ( char* caller ) |
| 158 | { |
sewardj | 68b2dd9 | 2002-05-10 21:03:56 +0000 | [diff] [blame] | 159 | VG_(startup)(); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 160 | } |
| 161 | |
sewardj | bea1caa | 2002-05-10 23:20:58 +0000 | [diff] [blame] | 162 | /* While we're at it ... hook our own startup function into this |
| 163 | game. */ |
| 164 | __asm__ ( |
| 165 | ".section .init\n" |
| 166 | "\tcall vgPlain_startup" |
| 167 | ); |
| 168 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 169 | |
| 170 | static |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 171 | __attribute__((noreturn)) |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 172 | void barf ( const char* str ) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 173 | { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 174 | char buf[1000]; |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 175 | strcpy(buf, "\nvalgrind's libpthread.so: "); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 176 | strcat(buf, str); |
| 177 | strcat(buf, "\n\n"); |
njn | 4c79121 | 2003-05-02 17:53:54 +0000 | [diff] [blame] | 178 | VALGRIND_NON_SIMD_CALL2(VG_(message), Vg_UserMsg, buf); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 179 | my_exit(1); |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 180 | /* We have to persuade gcc into believing this doesn't return. */ |
| 181 | while (1) { }; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 185 | static void cat_n_send ( char* pre, char* msg ) |
sewardj | 2a3d28c | 2002-04-14 13:27:00 +0000 | [diff] [blame] | 186 | { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 187 | char buf[1000]; |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 188 | if (get_pt_trace_level() >= 0) { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 189 | snprintf(buf, sizeof(buf), "%s%s", pre, msg ); |
| 190 | buf[sizeof(buf)-1] = '\0'; |
njn | 4c79121 | 2003-05-02 17:53:54 +0000 | [diff] [blame] | 191 | VALGRIND_NON_SIMD_CALL2(VG_(message), Vg_UserMsg, buf); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 192 | } |
sewardj | 2a3d28c | 2002-04-14 13:27:00 +0000 | [diff] [blame] | 193 | } |
| 194 | |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 195 | static void ignored ( char* msg ) |
| 196 | { |
| 197 | cat_n_send ( "valgrind's libpthread.so: IGNORED call to: ", msg ); |
| 198 | } |
| 199 | |
| 200 | |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 201 | static void kludged ( char* msg ) |
| 202 | { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 203 | cat_n_send ( "valgrind's libpthread.so: KLUDGED call to: ", msg ); |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 204 | } |
| 205 | |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 206 | |
sewardj | ccef2e6 | 2002-05-29 19:26:32 +0000 | [diff] [blame] | 207 | __attribute__((noreturn)) |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 208 | void vgPlain_unimp ( char* what ) |
| 209 | { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 210 | cat_n_send ( |
| 211 | "valgrind's libpthread.so: UNIMPLEMENTED FUNCTION: ", what ); |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 212 | barf("Please report this bug to me at: jseward@acm.org"); |
| 213 | } |
| 214 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 215 | |
sewardj | 457cc47 | 2002-06-03 23:13:47 +0000 | [diff] [blame] | 216 | static |
daywalker | 3222e0a | 2003-09-18 01:39:50 +0000 | [diff] [blame] | 217 | void my_assert_fail ( const Char* expr, const Char* file, Int line, const Char* fn ) |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 218 | { |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 219 | char buf[1000]; |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 220 | static Bool entered = False; |
| 221 | if (entered) |
| 222 | my_exit(2); |
| 223 | entered = True; |
sewardj | 69a72a5 | 2002-11-03 13:41:41 +0000 | [diff] [blame] | 224 | sprintf(buf, "\n%s: %s:%d (%s): Assertion `%s' failed.\n", |
| 225 | "valgrind", file, line, fn, expr ); |
| 226 | cat_n_send ( "", buf ); |
| 227 | sprintf(buf, "Please report this bug to me at: %s\n\n", |
| 228 | VG_EMAIL_ADDR); |
| 229 | cat_n_send ( "", buf ); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 230 | my_exit(1); |
| 231 | } |
| 232 | |
| 233 | #define MY__STRING(__str) #__str |
| 234 | |
| 235 | #define my_assert(expr) \ |
| 236 | ((void) ((expr) ? 0 : \ |
| 237 | (my_assert_fail (MY__STRING(expr), \ |
| 238 | __FILE__, __LINE__, \ |
| 239 | __PRETTY_FUNCTION__), 0))) |
| 240 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 241 | static |
| 242 | void my_free ( void* ptr ) |
| 243 | { |
| 244 | int res; |
| 245 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 246 | VG_USERREQ__FREE, ptr, 0, 0, 0); |
| 247 | my_assert(res == 0); |
| 248 | } |
| 249 | |
| 250 | |
| 251 | static |
| 252 | void* my_malloc ( int nbytes ) |
| 253 | { |
| 254 | void* res; |
| 255 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 256 | VG_USERREQ__MALLOC, nbytes, 0, 0, 0); |
| 257 | my_assert(res != (void*)0); |
| 258 | return res; |
| 259 | } |
| 260 | |
| 261 | |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 262 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 263 | /* --------------------------------------------------------------------- |
| 264 | Pass pthread_ calls to Valgrind's request mechanism. |
| 265 | ------------------------------------------------------------------ */ |
| 266 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 267 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 268 | /* --------------------------------------------------- |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 269 | Ummm .. |
| 270 | ------------------------------------------------ */ |
| 271 | |
| 272 | static |
| 273 | void pthread_error ( const char* msg ) |
| 274 | { |
| 275 | int res; |
| 276 | VALGRIND_MAGIC_SEQUENCE(res, 0, |
| 277 | VG_USERREQ__PTHREAD_ERROR, |
| 278 | msg, 0, 0, 0); |
| 279 | } |
| 280 | |
| 281 | |
| 282 | /* --------------------------------------------------- |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 283 | Here so it can be inlined without complaint. |
| 284 | ------------------------------------------------ */ |
| 285 | |
| 286 | __inline__ |
| 287 | pthread_t pthread_self(void) |
| 288 | { |
| 289 | int tid; |
| 290 | ensure_valgrind("pthread_self"); |
| 291 | VALGRIND_MAGIC_SEQUENCE(tid, 0 /* default */, |
| 292 | VG_USERREQ__PTHREAD_GET_THREADID, |
| 293 | 0, 0, 0, 0); |
| 294 | if (tid < 1 || tid >= VG_N_THREADS) |
| 295 | barf("pthread_self: invalid ThreadId"); |
| 296 | return tid; |
| 297 | } |
| 298 | |
| 299 | |
| 300 | /* --------------------------------------------------- |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 301 | THREAD ATTRIBUTES |
| 302 | ------------------------------------------------ */ |
| 303 | |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 304 | int pthread_attr_init(pthread_attr_t *attr) |
| 305 | { |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 306 | /* Just initialise the fields which we might look at. */ |
| 307 | attr->__detachstate = PTHREAD_CREATE_JOINABLE; |
sewardj | 111b14c | 2002-10-20 16:22:57 +0000 | [diff] [blame] | 308 | /* Linuxthreads sets this field to the value __getpagesize(), so I |
| 309 | guess the following is OK. */ |
| 310 | attr->__guardsize = VKI_BYTES_PER_PAGE; return 0; |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate) |
| 314 | { |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 315 | if (detachstate != PTHREAD_CREATE_JOINABLE |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 316 | && detachstate != PTHREAD_CREATE_DETACHED) { |
| 317 | pthread_error("pthread_attr_setdetachstate: " |
| 318 | "detachstate is invalid"); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 319 | return EINVAL; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 320 | } |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 321 | attr->__detachstate = detachstate; |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 322 | return 0; |
| 323 | } |
| 324 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 325 | int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate) |
| 326 | { |
| 327 | *detachstate = attr->__detachstate; |
| 328 | return 0; |
| 329 | } |
| 330 | |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 331 | int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit) |
| 332 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 333 | static int moans = N_MOANS; |
| 334 | if (moans-- > 0) |
| 335 | ignored("pthread_attr_setinheritsched"); |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 336 | return 0; |
| 337 | } |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 338 | |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 339 | WEAK |
sewardj | 0286dd5 | 2002-05-16 20:51:15 +0000 | [diff] [blame] | 340 | int pthread_attr_setstacksize (pthread_attr_t *__attr, |
| 341 | size_t __stacksize) |
| 342 | { |
sewardj | a18e210 | 2002-05-18 10:43:22 +0000 | [diff] [blame] | 343 | size_t limit; |
sewardj | 3d7c8d6 | 2002-06-04 20:59:16 +0000 | [diff] [blame] | 344 | char buf[1024]; |
sewardj | 0286dd5 | 2002-05-16 20:51:15 +0000 | [diff] [blame] | 345 | ensure_valgrind("pthread_attr_setstacksize"); |
sewardj | a18e210 | 2002-05-18 10:43:22 +0000 | [diff] [blame] | 346 | limit = VG_PTHREAD_STACK_SIZE - VG_AR_CLIENT_STACKBASE_REDZONE_SZB |
| 347 | - 1000; /* paranoia */ |
| 348 | if (__stacksize < limit) |
sewardj | 0286dd5 | 2002-05-16 20:51:15 +0000 | [diff] [blame] | 349 | return 0; |
sewardj | 3d7c8d6 | 2002-06-04 20:59:16 +0000 | [diff] [blame] | 350 | snprintf(buf, sizeof(buf), "pthread_attr_setstacksize: " |
| 351 | "requested size %d >= VG_PTHREAD_STACK_SIZE\n " |
| 352 | "edit vg_include.h and rebuild.", __stacksize); |
| 353 | buf[sizeof(buf)-1] = '\0'; /* Make sure it is zero terminated */ |
| 354 | barf(buf); |
sewardj | 0286dd5 | 2002-05-16 20:51:15 +0000 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 358 | /* This is completely bogus. */ |
| 359 | int pthread_attr_getschedparam(const pthread_attr_t *attr, |
| 360 | struct sched_param *param) |
| 361 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 362 | static int moans = N_MOANS; |
| 363 | if (moans-- > 0) |
| 364 | kludged("pthread_attr_getschedparam"); |
sewardj | 3e909ce | 2002-06-03 13:27:15 +0000 | [diff] [blame] | 365 | # ifdef HAVE_SCHED_PRIORITY |
sewardj | 72d5848 | 2002-04-24 02:20:20 +0000 | [diff] [blame] | 366 | if (param) param->sched_priority = 0; /* who knows */ |
| 367 | # else |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 368 | if (param) param->__sched_priority = 0; /* who knows */ |
sewardj | 72d5848 | 2002-04-24 02:20:20 +0000 | [diff] [blame] | 369 | # endif |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | int pthread_attr_setschedparam(pthread_attr_t *attr, |
| 374 | const struct sched_param *param) |
| 375 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 376 | static int moans = N_MOANS; |
| 377 | if (moans-- > 0) |
| 378 | ignored("pthread_attr_setschedparam"); |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | int pthread_attr_destroy(pthread_attr_t *attr) |
| 383 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 384 | static int moans = N_MOANS; |
| 385 | if (moans-- > 0) |
| 386 | ignored("pthread_attr_destroy"); |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 387 | return 0; |
| 388 | } |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 389 | |
sewardj | 0d84423 | 2002-06-02 09:29:31 +0000 | [diff] [blame] | 390 | /* These are no-ops, as with LinuxThreads. */ |
| 391 | int pthread_attr_setscope ( pthread_attr_t *attr, int scope ) |
| 392 | { |
| 393 | ensure_valgrind("pthread_attr_setscope"); |
| 394 | if (scope == PTHREAD_SCOPE_SYSTEM) |
| 395 | return 0; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 396 | pthread_error("pthread_attr_setscope: " |
| 397 | "invalid or unsupported scope"); |
sewardj | 0d84423 | 2002-06-02 09:29:31 +0000 | [diff] [blame] | 398 | if (scope == PTHREAD_SCOPE_PROCESS) |
| 399 | return ENOTSUP; |
| 400 | return EINVAL; |
| 401 | } |
| 402 | |
| 403 | int pthread_attr_getscope ( const pthread_attr_t *attr, int *scope ) |
| 404 | { |
| 405 | ensure_valgrind("pthread_attr_setscope"); |
| 406 | if (scope) |
| 407 | *scope = PTHREAD_SCOPE_SYSTEM; |
| 408 | return 0; |
| 409 | } |
| 410 | |
sewardj | 64039bb | 2002-06-03 00:58:18 +0000 | [diff] [blame] | 411 | |
| 412 | /* Pretty bogus. Avoid if possible. */ |
| 413 | int pthread_getattr_np (pthread_t thread, pthread_attr_t *attr) |
| 414 | { |
| 415 | int detached; |
| 416 | size_t limit; |
| 417 | ensure_valgrind("pthread_getattr_np"); |
| 418 | kludged("pthread_getattr_np"); |
| 419 | limit = VG_PTHREAD_STACK_SIZE - VG_AR_CLIENT_STACKBASE_REDZONE_SZB |
| 420 | - 1000; /* paranoia */ |
| 421 | attr->__detachstate = PTHREAD_CREATE_JOINABLE; |
| 422 | attr->__schedpolicy = SCHED_OTHER; |
| 423 | attr->__schedparam.sched_priority = 0; |
| 424 | attr->__inheritsched = PTHREAD_EXPLICIT_SCHED; |
| 425 | attr->__scope = PTHREAD_SCOPE_SYSTEM; |
| 426 | attr->__guardsize = VKI_BYTES_PER_PAGE; |
| 427 | attr->__stackaddr = NULL; |
| 428 | attr->__stackaddr_set = 0; |
| 429 | attr->__stacksize = limit; |
| 430 | VALGRIND_MAGIC_SEQUENCE(detached, (-1) /* default */, |
| 431 | VG_USERREQ__SET_OR_GET_DETACH, |
| 432 | 2 /* get */, thread, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 433 | my_assert(detached == 0 || detached == 1); |
sewardj | 64039bb | 2002-06-03 00:58:18 +0000 | [diff] [blame] | 434 | if (detached) |
| 435 | attr->__detachstate = PTHREAD_CREATE_DETACHED; |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | |
| 440 | /* Bogus ... */ |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 441 | WEAK |
sewardj | 64039bb | 2002-06-03 00:58:18 +0000 | [diff] [blame] | 442 | int pthread_attr_getstackaddr ( const pthread_attr_t * attr, |
| 443 | void ** stackaddr ) |
| 444 | { |
| 445 | ensure_valgrind("pthread_attr_getstackaddr"); |
| 446 | kludged("pthread_attr_getstackaddr"); |
| 447 | if (stackaddr) |
| 448 | *stackaddr = NULL; |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | /* Not bogus (!) */ |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 453 | WEAK |
sewardj | 64039bb | 2002-06-03 00:58:18 +0000 | [diff] [blame] | 454 | int pthread_attr_getstacksize ( const pthread_attr_t * _attr, |
| 455 | size_t * __stacksize ) |
| 456 | { |
| 457 | size_t limit; |
| 458 | ensure_valgrind("pthread_attr_getstacksize"); |
| 459 | limit = VG_PTHREAD_STACK_SIZE - VG_AR_CLIENT_STACKBASE_REDZONE_SZB |
| 460 | - 1000; /* paranoia */ |
| 461 | if (__stacksize) |
| 462 | *__stacksize = limit; |
| 463 | return 0; |
| 464 | } |
| 465 | |
sewardj | a3be12f | 2002-06-17 12:19:44 +0000 | [diff] [blame] | 466 | int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy) |
| 467 | { |
| 468 | if (policy != SCHED_OTHER && policy != SCHED_FIFO && policy != SCHED_RR) |
| 469 | return EINVAL; |
| 470 | attr->__schedpolicy = policy; |
| 471 | return 0; |
| 472 | } |
| 473 | |
| 474 | int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy) |
| 475 | { |
| 476 | *policy = attr->__schedpolicy; |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | |
sewardj | 111b14c | 2002-10-20 16:22:57 +0000 | [diff] [blame] | 481 | /* This is completely bogus. We reject all attempts to change it from |
| 482 | VKI_BYTES_PER_PAGE. I don't have a clue what it's for so it seems |
| 483 | safest to be paranoid. */ |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 484 | WEAK |
sewardj | 111b14c | 2002-10-20 16:22:57 +0000 | [diff] [blame] | 485 | int pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize) |
| 486 | { |
| 487 | static int moans = N_MOANS; |
| 488 | |
| 489 | if (guardsize == VKI_BYTES_PER_PAGE) |
| 490 | return 0; |
| 491 | |
| 492 | if (moans-- > 0) |
| 493 | ignored("pthread_attr_setguardsize: ignoring guardsize != 4096"); |
| 494 | |
| 495 | return 0; |
| 496 | } |
| 497 | |
| 498 | /* A straight copy of the LinuxThreads code. */ |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 499 | WEAK |
sewardj | 111b14c | 2002-10-20 16:22:57 +0000 | [diff] [blame] | 500 | int pthread_attr_getguardsize(const pthread_attr_t *attr, size_t *guardsize) |
| 501 | { |
| 502 | *guardsize = attr->__guardsize; |
| 503 | return 0; |
| 504 | } |
| 505 | |
sewardj | ab2e123 | 2002-12-26 12:16:11 +0000 | [diff] [blame] | 506 | /* Again, like LinuxThreads. */ |
| 507 | |
| 508 | static int concurrency_current_level = 0; |
| 509 | |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 510 | WEAK |
sewardj | b34e4db | 2002-12-08 23:51:32 +0000 | [diff] [blame] | 511 | int pthread_setconcurrency(int new_level) |
| 512 | { |
| 513 | if (new_level < 0) |
| 514 | return EINVAL; |
sewardj | ab2e123 | 2002-12-26 12:16:11 +0000 | [diff] [blame] | 515 | else { |
| 516 | concurrency_current_level = new_level; |
sewardj | b34e4db | 2002-12-08 23:51:32 +0000 | [diff] [blame] | 517 | return 0; |
sewardj | ab2e123 | 2002-12-26 12:16:11 +0000 | [diff] [blame] | 518 | } |
sewardj | b34e4db | 2002-12-08 23:51:32 +0000 | [diff] [blame] | 519 | } |
| 520 | |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 521 | WEAK |
sewardj | ab2e123 | 2002-12-26 12:16:11 +0000 | [diff] [blame] | 522 | int pthread_getconcurrency(void) |
| 523 | { |
| 524 | return concurrency_current_level; |
| 525 | } |
| 526 | |
| 527 | |
sewardj | 111b14c | 2002-10-20 16:22:57 +0000 | [diff] [blame] | 528 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 529 | /* --------------------------------------------------- |
| 530 | Helper functions for running a thread |
| 531 | and for clearing up afterwards. |
| 532 | ------------------------------------------------ */ |
| 533 | |
| 534 | /* All exiting threads eventually pass through here, bearing the |
| 535 | return value, or PTHREAD_CANCELED, in ret_val. */ |
| 536 | static |
| 537 | __attribute__((noreturn)) |
| 538 | void thread_exit_wrapper ( void* ret_val ) |
| 539 | { |
sewardj | 870497a | 2002-05-29 01:06:47 +0000 | [diff] [blame] | 540 | int detached, res; |
| 541 | CleanupEntry cu; |
| 542 | pthread_key_t key; |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 543 | void** specifics_ptr; |
sewardj | 870497a | 2002-05-29 01:06:47 +0000 | [diff] [blame] | 544 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 545 | /* Run this thread's cleanup handlers. */ |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 546 | while (1) { |
| 547 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 548 | VG_USERREQ__CLEANUP_POP, |
| 549 | &cu, 0, 0, 0); |
| 550 | if (res == -1) break; /* stack empty */ |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 551 | my_assert(res == 0); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 552 | if (0) printf("running exit cleanup handler"); |
| 553 | cu.fn ( cu.arg ); |
| 554 | } |
| 555 | |
sewardj | 870497a | 2002-05-29 01:06:47 +0000 | [diff] [blame] | 556 | /* Run this thread's key finalizers. Really this should be run |
| 557 | PTHREAD_DESTRUCTOR_ITERATIONS times. */ |
| 558 | for (key = 0; key < VG_N_THREAD_KEYS; key++) { |
| 559 | VALGRIND_MAGIC_SEQUENCE(res, (-2) /* default */, |
| 560 | VG_USERREQ__GET_KEY_D_AND_S, |
| 561 | key, &cu, 0, 0 ); |
| 562 | if (res == 0) { |
| 563 | /* valid key */ |
| 564 | if (cu.fn && cu.arg) |
| 565 | cu.fn /* destructor for key */ |
| 566 | ( cu.arg /* specific for key for this thread */ ); |
| 567 | continue; |
| 568 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 569 | my_assert(res == -1); |
sewardj | 870497a | 2002-05-29 01:06:47 +0000 | [diff] [blame] | 570 | } |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 571 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 572 | /* Free up my specifics space, if any. */ |
| 573 | VALGRIND_MAGIC_SEQUENCE(specifics_ptr, 3 /* default */, |
| 574 | VG_USERREQ__PTHREAD_GETSPECIFIC_PTR, |
| 575 | pthread_self(), 0, 0, 0); |
| 576 | my_assert(specifics_ptr != (void**)3); |
| 577 | my_assert(specifics_ptr != (void**)1); /* 1 means invalid thread */ |
| 578 | if (specifics_ptr != NULL) |
| 579 | my_free(specifics_ptr); |
| 580 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 581 | /* Decide on my final disposition. */ |
| 582 | VALGRIND_MAGIC_SEQUENCE(detached, (-1) /* default */, |
| 583 | VG_USERREQ__SET_OR_GET_DETACH, |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 584 | 2 /* get */, pthread_self(), 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 585 | my_assert(detached == 0 || detached == 1); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 586 | |
| 587 | if (detached) { |
| 588 | /* Detached; I just quit right now. */ |
| 589 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 590 | VG_USERREQ__QUIT, 0, 0, 0, 0); |
| 591 | } else { |
| 592 | /* Not detached; so I wait for a joiner. */ |
| 593 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 594 | VG_USERREQ__WAIT_JOINER, ret_val, 0, 0, 0); |
| 595 | } |
| 596 | /* NOTREACHED */ |
| 597 | barf("thread_exit_wrapper: still alive?!"); |
| 598 | } |
| 599 | |
| 600 | |
| 601 | /* This function is a wrapper function for running a thread. It runs |
| 602 | the root function specified in pthread_create, and then, should the |
| 603 | root function return a value, it arranges to run the thread's |
| 604 | cleanup handlers and exit correctly. */ |
| 605 | |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 606 | /* Struct used to convey info from pthread_create to thread_wrapper. |
| 607 | Must be careful not to pass to the child thread any pointers to |
| 608 | objects which might be on the parent's stack. */ |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 609 | typedef |
| 610 | struct { |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 611 | int attr__detachstate; |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 612 | void* (*root_fn) ( void* ); |
| 613 | void* arg; |
| 614 | } |
| 615 | NewThreadInfo; |
| 616 | |
| 617 | |
| 618 | /* This is passed to the VG_USERREQ__APPLY_IN_NEW_THREAD and so must |
| 619 | not return. Note that this runs in the new thread, not the |
| 620 | parent. */ |
| 621 | static |
| 622 | __attribute__((noreturn)) |
| 623 | void thread_wrapper ( NewThreadInfo* info ) |
| 624 | { |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 625 | int attr__detachstate; |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 626 | void* (*root_fn) ( void* ); |
| 627 | void* arg; |
| 628 | void* ret_val; |
| 629 | |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 630 | attr__detachstate = info->attr__detachstate; |
| 631 | root_fn = info->root_fn; |
| 632 | arg = info->arg; |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 633 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 634 | /* Free up the arg block that pthread_create malloced. */ |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 635 | my_free(info); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 636 | |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 637 | /* Minimally observe the attributes supplied. */ |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 638 | if (attr__detachstate != PTHREAD_CREATE_DETACHED |
| 639 | && attr__detachstate != PTHREAD_CREATE_JOINABLE) |
| 640 | pthread_error("thread_wrapper: invalid attr->__detachstate"); |
| 641 | if (attr__detachstate == PTHREAD_CREATE_DETACHED) |
| 642 | pthread_detach(pthread_self()); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 643 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 644 | # ifdef GLIBC_2_3 |
| 645 | /* Set this thread's locale to the global (default) locale. A hack |
| 646 | in support of glibc-2.3. This does the biz for the all new |
| 647 | threads; the root thread is done with a horrible hack in |
| 648 | init_libc_tsd_keys() below. |
| 649 | */ |
| 650 | __uselocale(LC_GLOBAL_LOCALE); |
| 651 | # endif |
| 652 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 653 | /* The root function might not return. But if it does we simply |
| 654 | move along to thread_exit_wrapper. All other ways out for the |
| 655 | thread (cancellation, or calling pthread_exit) lead there |
| 656 | too. */ |
| 657 | ret_val = root_fn(arg); |
| 658 | thread_exit_wrapper(ret_val); |
| 659 | /* NOTREACHED */ |
| 660 | } |
| 661 | |
| 662 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 663 | /* --------------------------------------------------- |
| 664 | THREADs |
| 665 | ------------------------------------------------ */ |
| 666 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 667 | static void __valgrind_pthread_yield ( void ) |
sewardj | ff42d1d | 2002-05-22 13:17:31 +0000 | [diff] [blame] | 668 | { |
| 669 | int res; |
| 670 | ensure_valgrind("pthread_yield"); |
| 671 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 672 | VG_USERREQ__PTHREAD_YIELD, 0, 0, 0, 0); |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 673 | } |
| 674 | |
| 675 | WEAK |
| 676 | int pthread_yield ( void ) |
| 677 | { |
| 678 | __valgrind_pthread_yield(); |
sewardj | ff42d1d | 2002-05-22 13:17:31 +0000 | [diff] [blame] | 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 683 | int pthread_equal(pthread_t thread1, pthread_t thread2) |
| 684 | { |
| 685 | return thread1 == thread2 ? 1 : 0; |
| 686 | } |
| 687 | |
| 688 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 689 | /* Bundle up the args into a malloc'd block and create a new thread |
| 690 | consisting of thread_wrapper() applied to said malloc'd block. */ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 691 | int |
sewardj | 1462c8b | 2002-07-24 09:41:52 +0000 | [diff] [blame] | 692 | pthread_create (pthread_t *__restrict __thredd, |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 693 | __const pthread_attr_t *__restrict __attr, |
| 694 | void *(*__start_routine) (void *), |
| 695 | void *__restrict __arg) |
| 696 | { |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 697 | int tid_child; |
| 698 | NewThreadInfo* info; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 699 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 700 | ensure_valgrind("pthread_create"); |
| 701 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 702 | /* make sure the tsd keys, and hence locale info, are initialised |
| 703 | before we get into complications making new threads. */ |
| 704 | init_libc_tsd_keys(); |
| 705 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 706 | /* Allocate space for the arg block. thread_wrapper will free |
| 707 | it. */ |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 708 | info = my_malloc(sizeof(NewThreadInfo)); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 709 | my_assert(info != NULL); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 710 | |
sewardj | 728a527 | 2002-06-20 10:25:37 +0000 | [diff] [blame] | 711 | if (__attr) |
| 712 | info->attr__detachstate = __attr->__detachstate; |
| 713 | else |
| 714 | info->attr__detachstate = PTHREAD_CREATE_JOINABLE; |
| 715 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 716 | info->root_fn = __start_routine; |
| 717 | info->arg = __arg; |
| 718 | VALGRIND_MAGIC_SEQUENCE(tid_child, VG_INVALID_THREADID /* default */, |
| 719 | VG_USERREQ__APPLY_IN_NEW_THREAD, |
| 720 | &thread_wrapper, info, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 721 | my_assert(tid_child != VG_INVALID_THREADID); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 722 | |
sewardj | 1462c8b | 2002-07-24 09:41:52 +0000 | [diff] [blame] | 723 | if (__thredd) |
| 724 | *__thredd = tid_child; |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 725 | return 0; /* success */ |
| 726 | } |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 727 | |
| 728 | |
| 729 | int |
| 730 | pthread_join (pthread_t __th, void **__thread_return) |
| 731 | { |
| 732 | int res; |
| 733 | ensure_valgrind("pthread_join"); |
| 734 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 735 | VG_USERREQ__PTHREAD_JOIN, |
| 736 | __th, __thread_return, 0, 0); |
| 737 | return res; |
| 738 | } |
| 739 | |
| 740 | |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 741 | void pthread_exit(void *retval) |
| 742 | { |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 743 | ensure_valgrind("pthread_exit"); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 744 | /* Simple! */ |
| 745 | thread_exit_wrapper(retval); |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 746 | } |
| 747 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 748 | |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 749 | int pthread_detach(pthread_t th) |
| 750 | { |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 751 | int res; |
| 752 | ensure_valgrind("pthread_detach"); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 753 | /* First we enquire as to the current detach state. */ |
| 754 | VALGRIND_MAGIC_SEQUENCE(res, (-2) /* default */, |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 755 | VG_USERREQ__SET_OR_GET_DETACH, |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 756 | 2 /* get */, th, 0, 0); |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 757 | if (res == -1) { |
| 758 | /* not found */ |
| 759 | pthread_error("pthread_detach: " |
| 760 | "invalid target thread"); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 761 | return ESRCH; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 762 | } |
| 763 | if (res == 1) { |
| 764 | /* already detached */ |
| 765 | pthread_error("pthread_detach: " |
| 766 | "target thread is already detached"); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 767 | return EINVAL; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 768 | } |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 769 | if (res == 0) { |
| 770 | VALGRIND_MAGIC_SEQUENCE(res, (-2) /* default */, |
| 771 | VG_USERREQ__SET_OR_GET_DETACH, |
| 772 | 1 /* set */, th, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 773 | my_assert(res == 0); |
sewardj | 7989d0c | 2002-05-28 11:00:01 +0000 | [diff] [blame] | 774 | return 0; |
| 775 | } |
| 776 | barf("pthread_detach"); |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 780 | /* --------------------------------------------------- |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 781 | CLEANUP STACKS |
| 782 | ------------------------------------------------ */ |
| 783 | |
| 784 | void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer, |
| 785 | void (*__routine) (void *), |
| 786 | void *__arg) |
| 787 | { |
| 788 | int res; |
| 789 | CleanupEntry cu; |
| 790 | ensure_valgrind("_pthread_cleanup_push"); |
| 791 | cu.fn = __routine; |
| 792 | cu.arg = __arg; |
| 793 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 794 | VG_USERREQ__CLEANUP_PUSH, |
| 795 | &cu, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 796 | my_assert(res == 0); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 797 | } |
| 798 | |
| 799 | |
| 800 | void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *__buffer, |
| 801 | void (*__routine) (void *), |
| 802 | void *__arg) |
| 803 | { |
| 804 | /* As _pthread_cleanup_push, but first save the thread's original |
| 805 | cancellation type in __buffer and set it to Deferred. */ |
| 806 | int orig_ctype; |
| 807 | ensure_valgrind("_pthread_cleanup_push_defer"); |
| 808 | /* Set to Deferred, and put the old cancellation type in res. */ |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 809 | my_assert(-1 != PTHREAD_CANCEL_DEFERRED); |
| 810 | my_assert(-1 != PTHREAD_CANCEL_ASYNCHRONOUS); |
| 811 | my_assert(sizeof(struct _pthread_cleanup_buffer) >= sizeof(int)); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 812 | VALGRIND_MAGIC_SEQUENCE(orig_ctype, (-1) /* default */, |
| 813 | VG_USERREQ__SET_CANCELTYPE, |
| 814 | PTHREAD_CANCEL_DEFERRED, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 815 | my_assert(orig_ctype != -1); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 816 | *((int*)(__buffer)) = orig_ctype; |
| 817 | /* Now push the cleanup. */ |
| 818 | _pthread_cleanup_push(NULL, __routine, __arg); |
| 819 | } |
| 820 | |
| 821 | |
| 822 | void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer, |
| 823 | int __execute) |
| 824 | { |
| 825 | int res; |
| 826 | CleanupEntry cu; |
| 827 | ensure_valgrind("_pthread_cleanup_push"); |
| 828 | cu.fn = cu.arg = NULL; /* paranoia */ |
| 829 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 830 | VG_USERREQ__CLEANUP_POP, |
| 831 | &cu, 0, 0, 0); |
| 832 | if (res == 0) { |
| 833 | /* pop succeeded */ |
| 834 | if (__execute) { |
| 835 | cu.fn ( cu.arg ); |
| 836 | } |
| 837 | return; |
| 838 | } |
| 839 | if (res == -1) { |
| 840 | /* stack underflow */ |
| 841 | return; |
| 842 | } |
| 843 | barf("_pthread_cleanup_pop"); |
| 844 | } |
| 845 | |
| 846 | |
| 847 | void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *__buffer, |
| 848 | int __execute) |
| 849 | { |
| 850 | int orig_ctype, fake_ctype; |
| 851 | /* As _pthread_cleanup_pop, but after popping/running the handler, |
| 852 | restore the thread's original cancellation type from the first |
| 853 | word of __buffer. */ |
| 854 | _pthread_cleanup_pop(NULL, __execute); |
| 855 | orig_ctype = *((int*)(__buffer)); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 856 | my_assert(orig_ctype == PTHREAD_CANCEL_DEFERRED |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 857 | || orig_ctype == PTHREAD_CANCEL_ASYNCHRONOUS); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 858 | my_assert(-1 != PTHREAD_CANCEL_DEFERRED); |
| 859 | my_assert(-1 != PTHREAD_CANCEL_ASYNCHRONOUS); |
| 860 | my_assert(sizeof(struct _pthread_cleanup_buffer) >= sizeof(int)); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 861 | VALGRIND_MAGIC_SEQUENCE(fake_ctype, (-1) /* default */, |
| 862 | VG_USERREQ__SET_CANCELTYPE, |
| 863 | orig_ctype, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 864 | my_assert(fake_ctype == PTHREAD_CANCEL_DEFERRED); |
sewardj | 8ad94e1 | 2002-05-29 00:10:20 +0000 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | |
| 868 | /* --------------------------------------------------- |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 869 | MUTEX ATTRIBUTES |
| 870 | ------------------------------------------------ */ |
| 871 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 872 | int __pthread_mutexattr_init(pthread_mutexattr_t *attr) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 873 | { |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 874 | attr->__mutexkind = PTHREAD_MUTEX_ERRORCHECK_NP; |
sewardj | 8937c81 | 2002-04-12 20:12:20 +0000 | [diff] [blame] | 875 | return 0; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 876 | } |
| 877 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 878 | int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 879 | { |
| 880 | switch (type) { |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 881 | # ifndef GLIBC_2_1 |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 882 | case PTHREAD_MUTEX_TIMED_NP: |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 883 | case PTHREAD_MUTEX_ADAPTIVE_NP: |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 884 | # endif |
sewardj | a1679dd | 2002-05-10 22:31:40 +0000 | [diff] [blame] | 885 | # ifdef GLIBC_2_1 |
sewardj | 68b2dd9 | 2002-05-10 21:03:56 +0000 | [diff] [blame] | 886 | case PTHREAD_MUTEX_FAST_NP: |
sewardj | a1679dd | 2002-05-10 22:31:40 +0000 | [diff] [blame] | 887 | # endif |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 888 | case PTHREAD_MUTEX_RECURSIVE_NP: |
| 889 | case PTHREAD_MUTEX_ERRORCHECK_NP: |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 890 | attr->__mutexkind = type; |
| 891 | return 0; |
| 892 | default: |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 893 | pthread_error("pthread_mutexattr_settype: " |
| 894 | "invalid type"); |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 895 | return EINVAL; |
| 896 | } |
| 897 | } |
| 898 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 899 | int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr) |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 900 | { |
| 901 | return 0; |
| 902 | } |
| 903 | |
sewardj | f099551 | 2003-07-06 01:29:49 +0000 | [diff] [blame] | 904 | int __pthread_mutexattr_setpshared ( pthread_mutexattr_t* attr, int pshared) |
sewardj | 7685cae | 2003-07-06 01:23:11 +0000 | [diff] [blame] | 905 | { |
| 906 | if (pshared != PTHREAD_PROCESS_PRIVATE && pshared != PTHREAD_PROCESS_SHARED) |
| 907 | return EINVAL; |
| 908 | |
| 909 | /* For now it is not possible to shared a conditional variable. */ |
| 910 | if (pshared != PTHREAD_PROCESS_PRIVATE) |
| 911 | return ENOSYS; |
| 912 | |
| 913 | return 0; |
| 914 | } |
| 915 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 916 | |
| 917 | /* --------------------------------------------------- |
| 918 | MUTEXes |
| 919 | ------------------------------------------------ */ |
| 920 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 921 | int __pthread_mutex_init(pthread_mutex_t *mutex, |
| 922 | const pthread_mutexattr_t *mutexattr) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 923 | { |
sewardj | 604ec3c | 2002-04-18 22:38:41 +0000 | [diff] [blame] | 924 | mutex->__m_count = 0; |
| 925 | mutex->__m_owner = (_pthread_descr)VG_INVALID_THREADID; |
| 926 | mutex->__m_kind = PTHREAD_MUTEX_ERRORCHECK_NP; |
| 927 | if (mutexattr) |
| 928 | mutex->__m_kind = mutexattr->__mutexkind; |
| 929 | return 0; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 930 | } |
| 931 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 932 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 933 | int __pthread_mutex_lock(pthread_mutex_t *mutex) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 934 | { |
| 935 | int res; |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 936 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 937 | if (RUNNING_ON_VALGRIND) { |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 938 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 939 | VG_USERREQ__PTHREAD_MUTEX_LOCK, |
| 940 | mutex, 0, 0, 0); |
| 941 | return res; |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 942 | } else { |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 943 | /* Play at locking */ |
| 944 | if (0) |
| 945 | kludged("prehistoric lock"); |
| 946 | mutex->__m_owner = (_pthread_descr)1; |
| 947 | mutex->__m_count = 1; |
| 948 | mutex->__m_kind |= VG_PTHREAD_PREHISTORY; |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 949 | return 0; /* success */ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 950 | } |
| 951 | } |
| 952 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 953 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 954 | int __pthread_mutex_trylock(pthread_mutex_t *mutex) |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 955 | { |
| 956 | int res; |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 957 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 958 | if (RUNNING_ON_VALGRIND) { |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 959 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 960 | VG_USERREQ__PTHREAD_MUTEX_TRYLOCK, |
| 961 | mutex, 0, 0, 0); |
| 962 | return res; |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 963 | } else { |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 964 | /* Play at locking */ |
| 965 | if (0) |
| 966 | kludged("prehistoric trylock"); |
| 967 | mutex->__m_owner = (_pthread_descr)1; |
| 968 | mutex->__m_count = 1; |
| 969 | mutex->__m_kind |= VG_PTHREAD_PREHISTORY; |
| 970 | return 0; /* success */ |
sewardj | 30671ff | 2002-04-21 00:13:57 +0000 | [diff] [blame] | 971 | } |
| 972 | } |
| 973 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 974 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 975 | int __pthread_mutex_unlock(pthread_mutex_t *mutex) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 976 | { |
| 977 | int res; |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 978 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 979 | if (RUNNING_ON_VALGRIND) { |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 980 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 981 | VG_USERREQ__PTHREAD_MUTEX_UNLOCK, |
| 982 | mutex, 0, 0, 0); |
| 983 | return res; |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 984 | } else { |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 985 | /* Play at locking */ |
| 986 | if (0) |
| 987 | kludged("prehistoric unlock"); |
| 988 | mutex->__m_owner = 0; |
| 989 | mutex->__m_count = 0; |
| 990 | mutex->__m_kind &= ~VG_PTHREAD_PREHISTORY; |
| 991 | return 0; /* success */ |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 992 | } |
| 993 | } |
| 994 | |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 995 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 996 | int __pthread_mutex_destroy(pthread_mutex_t *mutex) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 997 | { |
sewardj | 604ec3c | 2002-04-18 22:38:41 +0000 | [diff] [blame] | 998 | /* Valgrind doesn't hold any resources on behalf of the mutex, so no |
| 999 | need to involve it. */ |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1000 | if (mutex->__m_count > 0) { |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 1001 | /* Oh, the horror. glibc's internal use of pthreads "knows" |
| 1002 | that destroying a lock does an implicit unlock. Make it |
| 1003 | explicit. */ |
| 1004 | __pthread_mutex_unlock(mutex); |
| 1005 | pthread_error("pthread_mutex_destroy: " |
| 1006 | "mutex is still in use"); |
| 1007 | return EBUSY; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1008 | } |
| 1009 | mutex->__m_count = 0; |
| 1010 | mutex->__m_owner = (_pthread_descr)VG_INVALID_THREADID; |
| 1011 | mutex->__m_kind = PTHREAD_MUTEX_ERRORCHECK_NP; |
| 1012 | return 0; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1016 | /* --------------------------------------------------- |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1017 | CONDITION VARIABLES |
| 1018 | ------------------------------------------------ */ |
| 1019 | |
| 1020 | /* LinuxThreads supports no attributes for conditions. Hence ... */ |
| 1021 | |
| 1022 | int pthread_condattr_init(pthread_condattr_t *attr) |
| 1023 | { |
| 1024 | return 0; |
| 1025 | } |
| 1026 | |
sewardj | 0738a59 | 2002-04-20 13:59:33 +0000 | [diff] [blame] | 1027 | int pthread_condattr_destroy(pthread_condattr_t *attr) |
| 1028 | { |
| 1029 | return 0; |
| 1030 | } |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1031 | |
| 1032 | int pthread_cond_init( pthread_cond_t *cond, |
| 1033 | const pthread_condattr_t *cond_attr) |
| 1034 | { |
| 1035 | cond->__c_waiting = (_pthread_descr)VG_INVALID_THREADID; |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
sewardj | f854f47 | 2002-04-21 12:19:41 +0000 | [diff] [blame] | 1039 | int pthread_cond_destroy(pthread_cond_t *cond) |
| 1040 | { |
| 1041 | /* should check that no threads are waiting on this CV */ |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 1042 | static int moans = N_MOANS; |
| 1043 | if (moans-- > 0) |
| 1044 | kludged("pthread_cond_destroy"); |
sewardj | f854f47 | 2002-04-21 12:19:41 +0000 | [diff] [blame] | 1045 | return 0; |
| 1046 | } |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1047 | |
| 1048 | /* --------------------------------------------------- |
| 1049 | SCHEDULING |
| 1050 | ------------------------------------------------ */ |
| 1051 | |
| 1052 | /* This is completely bogus. */ |
| 1053 | int pthread_getschedparam(pthread_t target_thread, |
| 1054 | int *policy, |
| 1055 | struct sched_param *param) |
| 1056 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 1057 | static int moans = N_MOANS; |
| 1058 | if (moans-- > 0) |
| 1059 | kludged("pthread_getschedparam"); |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1060 | if (policy) *policy = SCHED_OTHER; |
sewardj | 3e909ce | 2002-06-03 13:27:15 +0000 | [diff] [blame] | 1061 | # ifdef HAVE_SCHED_PRIORITY |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 1062 | if (param) param->sched_priority = 0; /* who knows */ |
| 1063 | # else |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1064 | if (param) param->__sched_priority = 0; /* who knows */ |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 1065 | # endif |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1066 | return 0; |
| 1067 | } |
| 1068 | |
| 1069 | int pthread_setschedparam(pthread_t target_thread, |
| 1070 | int policy, |
| 1071 | const struct sched_param *param) |
| 1072 | { |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 1073 | static int moans = N_MOANS; |
| 1074 | if (moans-- > 0) |
| 1075 | ignored("pthread_setschedparam"); |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1076 | return 0; |
| 1077 | } |
| 1078 | |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 1079 | int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex) |
| 1080 | { |
| 1081 | int res; |
| 1082 | ensure_valgrind("pthread_cond_wait"); |
| 1083 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1084 | VG_USERREQ__PTHREAD_COND_WAIT, |
| 1085 | cond, mutex, 0, 0); |
| 1086 | return res; |
| 1087 | } |
| 1088 | |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1089 | int pthread_cond_timedwait ( pthread_cond_t *cond, |
| 1090 | pthread_mutex_t *mutex, |
| 1091 | const struct timespec *abstime ) |
| 1092 | { |
| 1093 | int res; |
| 1094 | unsigned int ms_now, ms_end; |
| 1095 | struct timeval timeval_now; |
| 1096 | unsigned long long int ull_ms_now_after_1970; |
| 1097 | unsigned long long int ull_ms_end_after_1970; |
| 1098 | |
| 1099 | ensure_valgrind("pthread_cond_timedwait"); |
| 1100 | VALGRIND_MAGIC_SEQUENCE(ms_now, 0xFFFFFFFF /* default */, |
| 1101 | VG_USERREQ__READ_MILLISECOND_TIMER, |
| 1102 | 0, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1103 | my_assert(ms_now != 0xFFFFFFFF); |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1104 | res = gettimeofday(&timeval_now, NULL); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1105 | my_assert(res == 0); |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1106 | |
| 1107 | ull_ms_now_after_1970 |
| 1108 | = 1000ULL * ((unsigned long long int)(timeval_now.tv_sec)) |
| 1109 | + ((unsigned long long int)(timeval_now.tv_usec / 1000000)); |
| 1110 | ull_ms_end_after_1970 |
| 1111 | = 1000ULL * ((unsigned long long int)(abstime->tv_sec)) |
| 1112 | + ((unsigned long long int)(abstime->tv_nsec / 1000000)); |
sewardj | d8e919e | 2002-05-29 20:13:53 +0000 | [diff] [blame] | 1113 | if (ull_ms_end_after_1970 < ull_ms_now_after_1970) |
| 1114 | ull_ms_end_after_1970 = ull_ms_now_after_1970; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1115 | ms_end |
| 1116 | = ms_now + (unsigned int)(ull_ms_end_after_1970 - ull_ms_now_after_1970); |
| 1117 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1118 | VG_USERREQ__PTHREAD_COND_TIMEDWAIT, |
| 1119 | cond, mutex, ms_end, 0); |
| 1120 | return res; |
| 1121 | } |
| 1122 | |
| 1123 | |
sewardj | 3b5d886 | 2002-04-20 13:53:23 +0000 | [diff] [blame] | 1124 | int pthread_cond_signal(pthread_cond_t *cond) |
| 1125 | { |
| 1126 | int res; |
| 1127 | ensure_valgrind("pthread_cond_signal"); |
| 1128 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1129 | VG_USERREQ__PTHREAD_COND_SIGNAL, |
| 1130 | cond, 0, 0, 0); |
| 1131 | return res; |
| 1132 | } |
| 1133 | |
| 1134 | int pthread_cond_broadcast(pthread_cond_t *cond) |
| 1135 | { |
| 1136 | int res; |
| 1137 | ensure_valgrind("pthread_cond_broadcast"); |
| 1138 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1139 | VG_USERREQ__PTHREAD_COND_BROADCAST, |
| 1140 | cond, 0, 0, 0); |
| 1141 | return res; |
| 1142 | } |
| 1143 | |
sewardj | 6072c36 | 2002-04-19 14:40:57 +0000 | [diff] [blame] | 1144 | |
| 1145 | /* --------------------------------------------------- |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1146 | CANCELLATION |
| 1147 | ------------------------------------------------ */ |
| 1148 | |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1149 | int pthread_setcancelstate(int state, int *oldstate) |
| 1150 | { |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1151 | int res; |
| 1152 | ensure_valgrind("pthread_setcancelstate"); |
| 1153 | if (state != PTHREAD_CANCEL_ENABLE |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1154 | && state != PTHREAD_CANCEL_DISABLE) { |
| 1155 | pthread_error("pthread_setcancelstate: " |
| 1156 | "invalid state"); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1157 | return EINVAL; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1158 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1159 | my_assert(-1 != PTHREAD_CANCEL_ENABLE); |
| 1160 | my_assert(-1 != PTHREAD_CANCEL_DISABLE); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1161 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 1162 | VG_USERREQ__SET_CANCELSTATE, |
| 1163 | state, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1164 | my_assert(res != -1); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1165 | if (oldstate) |
| 1166 | *oldstate = res; |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1167 | return 0; |
| 1168 | } |
| 1169 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1170 | int pthread_setcanceltype(int type, int *oldtype) |
| 1171 | { |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1172 | int res; |
| 1173 | ensure_valgrind("pthread_setcanceltype"); |
| 1174 | if (type != PTHREAD_CANCEL_DEFERRED |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1175 | && type != PTHREAD_CANCEL_ASYNCHRONOUS) { |
| 1176 | pthread_error("pthread_setcanceltype: " |
| 1177 | "invalid type"); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1178 | return EINVAL; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1179 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1180 | my_assert(-1 != PTHREAD_CANCEL_DEFERRED); |
| 1181 | my_assert(-1 != PTHREAD_CANCEL_ASYNCHRONOUS); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1182 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 1183 | VG_USERREQ__SET_CANCELTYPE, |
| 1184 | type, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1185 | my_assert(res != -1); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1186 | if (oldtype) |
| 1187 | *oldtype = res; |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1188 | return 0; |
| 1189 | } |
| 1190 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1191 | int pthread_cancel(pthread_t thread) |
| 1192 | { |
| 1193 | int res; |
| 1194 | ensure_valgrind("pthread_cancel"); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1195 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 1196 | VG_USERREQ__SET_CANCELPEND, |
| 1197 | thread, &thread_exit_wrapper, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1198 | my_assert(res != -1); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1199 | return res; |
| 1200 | } |
| 1201 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1202 | static |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1203 | void __my_pthread_testcancel(void) |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1204 | { |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1205 | int res; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1206 | ensure_valgrind("__my_pthread_testcancel"); |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1207 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 1208 | VG_USERREQ__TESTCANCEL, |
| 1209 | 0, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1210 | my_assert(res == 0); |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1211 | } |
| 1212 | |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1213 | void pthread_testcancel ( void ) |
| 1214 | { |
| 1215 | __my_pthread_testcancel(); |
| 1216 | } |
| 1217 | |
sewardj | 20917d8 | 2002-05-28 01:36:45 +0000 | [diff] [blame] | 1218 | |
sewardj | ef037c7 | 2002-05-30 00:40:03 +0000 | [diff] [blame] | 1219 | /* Not really sure what this is for. I suspect for doing the POSIX |
| 1220 | requirements for fork() and exec(). We do this internally anyway |
| 1221 | whenever those syscalls are observed, so this could be superfluous, |
| 1222 | but hey ... |
| 1223 | */ |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1224 | void __pthread_kill_other_threads_np ( void ) |
| 1225 | { |
sewardj | ef037c7 | 2002-05-30 00:40:03 +0000 | [diff] [blame] | 1226 | int res; |
| 1227 | ensure_valgrind("__pthread_kill_other_threads_np"); |
| 1228 | VALGRIND_MAGIC_SEQUENCE(res, (-1) /* default */, |
| 1229 | VG_USERREQ__NUKE_OTHER_THREADS, |
| 1230 | 0, 0, 0, 0); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 1231 | my_assert(res == 0); |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1232 | } |
| 1233 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1234 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1235 | /* --------------------------------------------------- |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1236 | SIGNALS |
| 1237 | ------------------------------------------------ */ |
| 1238 | |
| 1239 | #include <signal.h> |
| 1240 | |
| 1241 | int pthread_sigmask(int how, const sigset_t *newmask, |
| 1242 | sigset_t *oldmask) |
| 1243 | { |
| 1244 | int res; |
| 1245 | |
| 1246 | /* A bit subtle, because the scheduler expects newmask and oldmask |
| 1247 | to be vki_sigset_t* rather than sigset_t*, and the two are |
| 1248 | different. Fortunately the first 64 bits of a sigset_t are |
| 1249 | exactly a vki_sigset_t, so we just pass the pointers through |
| 1250 | unmodified. Haaaack! |
| 1251 | |
| 1252 | Also mash the how value so that the SIG_ constants from glibc |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 1253 | constants to VKI_ constants, so that the former do not have to |
| 1254 | be included into vg_scheduler.c. */ |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1255 | |
| 1256 | ensure_valgrind("pthread_sigmask"); |
| 1257 | |
| 1258 | switch (how) { |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 1259 | case SIG_SETMASK: how = VKI_SIG_SETMASK; break; |
| 1260 | case SIG_BLOCK: how = VKI_SIG_BLOCK; break; |
| 1261 | case SIG_UNBLOCK: how = VKI_SIG_UNBLOCK; break; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1262 | default: pthread_error("pthread_sigmask: invalid how"); |
| 1263 | return EINVAL; |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1264 | } |
| 1265 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1266 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1267 | VG_USERREQ__PTHREAD_SIGMASK, |
| 1268 | how, newmask, oldmask, 0); |
| 1269 | |
| 1270 | /* The scheduler tells us of any memory violations. */ |
| 1271 | return res == 0 ? 0 : EFAULT; |
| 1272 | } |
| 1273 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1274 | int sigwait ( const sigset_t* set, int* sig ) |
| 1275 | { |
| 1276 | int res; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1277 | vki_ksiginfo_t si; |
| 1278 | |
| 1279 | __my_pthread_testcancel(); |
| 1280 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1281 | /* As with pthread_sigmask we deliberately confuse sigset_t with |
| 1282 | vki_ksigset_t. */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1283 | si.si_signo = 0; |
| 1284 | res = VG_(ksigtimedwait)((const vki_ksigset_t *)set, &si, NULL); |
| 1285 | *sig = si.si_signo; |
| 1286 | |
| 1287 | return 0; /* always returns 0 */ |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 1291 | int pthread_kill(pthread_t thread, int signo) |
| 1292 | { |
| 1293 | int res; |
| 1294 | ensure_valgrind("pthread_kill"); |
| 1295 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1296 | VG_USERREQ__PTHREAD_KILL, |
| 1297 | thread, signo, 0, 0); |
| 1298 | return res; |
| 1299 | } |
| 1300 | |
| 1301 | |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 1302 | /* Copied verbatim from Linuxthreads */ |
| 1303 | /* Redefine raise() to send signal to calling thread only, |
| 1304 | as per POSIX 1003.1c */ |
| 1305 | int raise (int sig) |
| 1306 | { |
| 1307 | int retcode = pthread_kill(pthread_self(), sig); |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1308 | if (retcode == 0) { |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 1309 | return 0; |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 1310 | } else { |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 1311 | *(__errno_location()) = retcode; |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 1312 | return -1; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | |
sewardj | 9a2224b | 2002-06-19 10:17:40 +0000 | [diff] [blame] | 1317 | |
sewardj | b48e500 | 2002-05-13 00:16:03 +0000 | [diff] [blame] | 1318 | /* --------------------------------------------------- |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1319 | THREAD-SPECIFICs |
| 1320 | ------------------------------------------------ */ |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1321 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1322 | static |
| 1323 | int key_is_valid (pthread_key_t key) |
| 1324 | { |
| 1325 | int res; |
| 1326 | VALGRIND_MAGIC_SEQUENCE(res, 2 /* default */, |
| 1327 | VG_USERREQ__PTHREAD_KEY_VALIDATE, |
| 1328 | key, 0, 0, 0); |
| 1329 | my_assert(res != 2); |
| 1330 | return res; |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | /* Returns NULL if thread is invalid. Otherwise, if the thread |
| 1335 | already has a specifics area, return that. Otherwise allocate it |
| 1336 | one. */ |
| 1337 | static |
| 1338 | void** get_or_allocate_specifics_ptr ( pthread_t thread ) |
| 1339 | { |
| 1340 | int res, i; |
| 1341 | void** specifics_ptr; |
| 1342 | ensure_valgrind("get_or_allocate_specifics_ptr"); |
| 1343 | |
| 1344 | /* Returns zero if the thread has no specific_ptr. One if thread |
| 1345 | is invalid. Otherwise, the specific_ptr value. This is |
| 1346 | allocated with my_malloc and so is aligned and cannot be |
| 1347 | confused with 1 or 3. */ |
| 1348 | VALGRIND_MAGIC_SEQUENCE(specifics_ptr, 3 /* default */, |
| 1349 | VG_USERREQ__PTHREAD_GETSPECIFIC_PTR, |
| 1350 | thread, 0, 0, 0); |
| 1351 | my_assert(specifics_ptr != (void**)3); |
| 1352 | |
| 1353 | if (specifics_ptr == (void**)1) |
| 1354 | return NULL; /* invalid thread */ |
| 1355 | |
| 1356 | if (specifics_ptr != NULL) |
| 1357 | return specifics_ptr; /* already has a specifics ptr. */ |
| 1358 | |
| 1359 | /* None yet ... allocate a new one. Should never fail. */ |
| 1360 | specifics_ptr = my_malloc( VG_N_THREAD_KEYS * sizeof(void*) ); |
| 1361 | my_assert(specifics_ptr != NULL); |
| 1362 | |
| 1363 | VALGRIND_MAGIC_SEQUENCE(res, -1 /* default */, |
| 1364 | VG_USERREQ__PTHREAD_SETSPECIFIC_PTR, |
| 1365 | specifics_ptr, 0, 0, 0); |
| 1366 | my_assert(res == 0); |
| 1367 | |
| 1368 | /* POSIX sez: "Upon thread creation, the value NULL shall be |
| 1369 | associated with all defined keys in the new thread." This |
| 1370 | allocation is in effect a delayed allocation of the specific |
| 1371 | data for a thread, at its first-use. Hence we initialise it |
| 1372 | here. */ |
| 1373 | for (i = 0; i < VG_N_THREAD_KEYS; i++) { |
| 1374 | specifics_ptr[i] = NULL; |
| 1375 | } |
| 1376 | |
| 1377 | return specifics_ptr; |
| 1378 | } |
| 1379 | |
| 1380 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 1381 | int __pthread_key_create(pthread_key_t *key, |
| 1382 | void (*destr_function) (void *)) |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1383 | { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1384 | void** specifics_ptr; |
| 1385 | int res, i; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1386 | ensure_valgrind("pthread_key_create"); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1387 | |
| 1388 | /* This writes *key if successful. It should never fail. */ |
| 1389 | VALGRIND_MAGIC_SEQUENCE(res, 1 /* default */, |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1390 | VG_USERREQ__PTHREAD_KEY_CREATE, |
| 1391 | key, destr_function, 0, 0); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1392 | |
| 1393 | if (res == 0) { |
| 1394 | /* POSIX sez: "Upon key creation, the value NULL shall be |
| 1395 | associated with the new key in all active threads." */ |
| 1396 | for (i = 0; i < VG_N_THREADS; i++) { |
| 1397 | specifics_ptr = get_or_allocate_specifics_ptr(i); |
| 1398 | /* we get NULL if i is an invalid thread. */ |
| 1399 | if (specifics_ptr != NULL) |
| 1400 | specifics_ptr[*key] = NULL; |
| 1401 | } |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1402 | } |
| 1403 | |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1404 | return res; |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1405 | } |
| 1406 | |
| 1407 | int pthread_key_delete(pthread_key_t key) |
| 1408 | { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1409 | int res; |
njn | dfc9b8c | 2003-09-29 12:58:37 +0000 | [diff] [blame] | 1410 | ensure_valgrind("pthread_key_delete"); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1411 | if (!key_is_valid(key)) |
| 1412 | return EINVAL; |
| 1413 | VALGRIND_MAGIC_SEQUENCE(res, 0 /* default */, |
| 1414 | VG_USERREQ__PTHREAD_KEY_DELETE, |
| 1415 | key, 0, 0, 0); |
| 1416 | my_assert(res == 0); |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1417 | return 0; |
| 1418 | } |
| 1419 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 1420 | int __pthread_setspecific(pthread_key_t key, const void *pointer) |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1421 | { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1422 | void** specifics_ptr; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1423 | ensure_valgrind("pthread_setspecific"); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1424 | |
| 1425 | if (!key_is_valid(key)) |
| 1426 | return EINVAL; |
| 1427 | |
| 1428 | specifics_ptr = get_or_allocate_specifics_ptr(pthread_self()); |
| 1429 | specifics_ptr[key] = (void*)pointer; |
| 1430 | return 0; |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1431 | } |
| 1432 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 1433 | void * __pthread_getspecific(pthread_key_t key) |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1434 | { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1435 | void** specifics_ptr; |
sewardj | 5f07b66 | 2002-04-23 16:52:51 +0000 | [diff] [blame] | 1436 | ensure_valgrind("pthread_getspecific"); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1437 | |
| 1438 | if (!key_is_valid(key)) |
| 1439 | return NULL; |
| 1440 | |
| 1441 | specifics_ptr = get_or_allocate_specifics_ptr(pthread_self()); |
| 1442 | return specifics_ptr[key]; |
| 1443 | } |
| 1444 | |
| 1445 | |
sewardj | 9aa918d | 2002-10-20 16:25:55 +0000 | [diff] [blame] | 1446 | #ifdef GLIBC_2_3 |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1447 | static |
| 1448 | void ** __pthread_getspecific_addr(pthread_key_t key) |
| 1449 | { |
| 1450 | void** specifics_ptr; |
| 1451 | ensure_valgrind("pthread_getspecific_addr"); |
| 1452 | |
| 1453 | if (!key_is_valid(key)) |
| 1454 | return NULL; |
| 1455 | |
| 1456 | specifics_ptr = get_or_allocate_specifics_ptr(pthread_self()); |
| 1457 | return &(specifics_ptr[key]); |
sewardj | 5e5fa51 | 2002-04-14 13:13:05 +0000 | [diff] [blame] | 1458 | } |
sewardj | 9aa918d | 2002-10-20 16:25:55 +0000 | [diff] [blame] | 1459 | #endif |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1460 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1461 | |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1462 | /* --------------------------------------------------- |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1463 | ONCEry |
| 1464 | ------------------------------------------------ */ |
| 1465 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1466 | /* This protects reads and writes of the once_control variable |
| 1467 | supplied. It is never held whilst any particular initialiser is |
| 1468 | running. */ |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1469 | static pthread_mutex_t once_masterlock = PTHREAD_MUTEX_INITIALIZER; |
| 1470 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1471 | /* Initialiser needs to be run. */ |
| 1472 | #define P_ONCE_NOT_DONE ((PTHREAD_ONCE_INIT) + 0) |
| 1473 | |
| 1474 | /* Initialiser currently running. */ |
| 1475 | #define P_ONCE_RUNNING ((PTHREAD_ONCE_INIT) + 1) |
| 1476 | |
| 1477 | /* Initialiser has completed. */ |
| 1478 | #define P_ONCE_COMPLETED ((PTHREAD_ONCE_INIT) + 2) |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1479 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 1480 | int __pthread_once ( pthread_once_t *once_control, |
| 1481 | void (*init_routine) (void) ) |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1482 | { |
| 1483 | int res; |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1484 | int done; |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1485 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1486 | # define TAKE_LOCK \ |
| 1487 | res = __pthread_mutex_lock(&once_masterlock); \ |
| 1488 | my_assert(res == 0); |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1489 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1490 | # define RELEASE_LOCK \ |
| 1491 | res = __pthread_mutex_unlock(&once_masterlock); \ |
| 1492 | my_assert(res == 0); |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1493 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1494 | void cleanup(void *v) { |
| 1495 | TAKE_LOCK; |
| 1496 | *once_control = P_ONCE_NOT_DONE; |
| 1497 | RELEASE_LOCK; |
| 1498 | } |
| 1499 | |
| 1500 | ensure_valgrind("pthread_once"); |
| 1501 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1502 | /* Grab the lock transiently, so we can safely see what state this |
| 1503 | once_control is in. */ |
| 1504 | |
| 1505 | TAKE_LOCK; |
| 1506 | |
| 1507 | switch (*once_control) { |
| 1508 | |
| 1509 | case P_ONCE_NOT_DONE: |
| 1510 | /* Not started. Change state to indicate running, drop the |
| 1511 | lock and run. */ |
| 1512 | *once_control = P_ONCE_RUNNING; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1513 | _pthread_cleanup_push(NULL, cleanup, NULL); |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1514 | RELEASE_LOCK; |
| 1515 | init_routine(); |
| 1516 | /* re-take the lock, and set state to indicate done. */ |
| 1517 | TAKE_LOCK; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1518 | _pthread_cleanup_pop(NULL, False); |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1519 | *once_control = P_ONCE_COMPLETED; |
| 1520 | RELEASE_LOCK; |
| 1521 | break; |
| 1522 | |
| 1523 | case P_ONCE_RUNNING: |
| 1524 | /* This is the tricky case. The initialiser is running in |
| 1525 | some other thread, but we have to delay this thread till |
| 1526 | the other one completes. So we sort-of busy wait. In |
| 1527 | fact it makes sense to yield now, because what we want to |
| 1528 | happen is for the thread running the initialiser to |
| 1529 | complete ASAP. */ |
| 1530 | RELEASE_LOCK; |
| 1531 | done = 0; |
| 1532 | while (1) { |
| 1533 | /* Let others run for a while. */ |
| 1534 | __valgrind_pthread_yield(); |
| 1535 | /* Grab the lock and see if we're done waiting. */ |
| 1536 | TAKE_LOCK; |
| 1537 | if (*once_control == P_ONCE_COMPLETED) |
| 1538 | done = 1; |
| 1539 | RELEASE_LOCK; |
| 1540 | if (done) |
| 1541 | break; |
| 1542 | } |
| 1543 | break; |
| 1544 | |
| 1545 | case P_ONCE_COMPLETED: |
| 1546 | default: |
| 1547 | /* Easy. It's already done. Just drop the lock. */ |
| 1548 | RELEASE_LOCK; |
| 1549 | break; |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1550 | } |
| 1551 | |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1552 | return 0; |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1553 | |
| 1554 | # undef TAKE_LOCK |
| 1555 | # undef RELEASE_LOCK |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1556 | } |
| 1557 | |
sewardj | c91a4ff | 2003-07-11 00:12:58 +0000 | [diff] [blame] | 1558 | #undef P_ONCE_NOT_DONE |
| 1559 | #undef P_ONCE_RUNNING |
| 1560 | #undef P_ONCE_COMPLETED |
| 1561 | |
sewardj | 89d3d85 | 2002-04-24 19:21:39 +0000 | [diff] [blame] | 1562 | |
| 1563 | /* --------------------------------------------------- |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1564 | MISC |
| 1565 | ------------------------------------------------ */ |
| 1566 | |
sewardj | 2cb0034 | 2002-06-28 01:46:26 +0000 | [diff] [blame] | 1567 | static pthread_mutex_t pthread_atfork_lock |
| 1568 | = PTHREAD_MUTEX_INITIALIZER; |
| 1569 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 1570 | int __pthread_atfork ( void (*prepare)(void), |
| 1571 | void (*parent)(void), |
| 1572 | void (*child)(void) ) |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1573 | { |
sewardj | 2cb0034 | 2002-06-28 01:46:26 +0000 | [diff] [blame] | 1574 | int n, res; |
| 1575 | ForkHandlerEntry entry; |
| 1576 | |
| 1577 | ensure_valgrind("pthread_atfork"); |
| 1578 | __pthread_mutex_lock(&pthread_atfork_lock); |
| 1579 | |
| 1580 | /* Fetch old counter */ |
| 1581 | VALGRIND_MAGIC_SEQUENCE(n, -2 /* default */, |
| 1582 | VG_USERREQ__GET_FHSTACK_USED, |
| 1583 | 0, 0, 0, 0); |
| 1584 | my_assert(n >= 0 && n < VG_N_FORKHANDLERSTACK); |
| 1585 | if (n == VG_N_FORKHANDLERSTACK-1) |
| 1586 | barf("pthread_atfork: VG_N_FORKHANDLERSTACK is too low; " |
| 1587 | "increase and recompile"); |
| 1588 | |
| 1589 | /* Add entry */ |
| 1590 | entry.prepare = *prepare; |
| 1591 | entry.parent = *parent; |
| 1592 | entry.child = *child; |
| 1593 | VALGRIND_MAGIC_SEQUENCE(res, -2 /* default */, |
| 1594 | VG_USERREQ__SET_FHSTACK_ENTRY, |
| 1595 | n, &entry, 0, 0); |
| 1596 | my_assert(res == 0); |
| 1597 | |
| 1598 | /* Bump counter */ |
| 1599 | VALGRIND_MAGIC_SEQUENCE(res, -2 /* default */, |
| 1600 | VG_USERREQ__SET_FHSTACK_USED, |
| 1601 | n+1, 0, 0, 0); |
| 1602 | my_assert(res == 0); |
| 1603 | |
| 1604 | __pthread_mutex_unlock(&pthread_atfork_lock); |
| 1605 | return 0; |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1606 | } |
| 1607 | |
| 1608 | |
sewardj | 9df7883 | 2003-05-04 12:35:54 +0000 | [diff] [blame] | 1609 | #ifdef GLIBC_2_3 |
| 1610 | /* This seems to be a hook which appeared in glibc-2.3.2. */ |
| 1611 | int __register_atfork ( void (*prepare)(void), |
| 1612 | void (*parent)(void), |
| 1613 | void (*child)(void) ) |
| 1614 | { |
| 1615 | return __pthread_atfork(prepare,parent,child); |
| 1616 | } |
| 1617 | #endif |
| 1618 | |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1619 | WEAK |
sewardj | bb99078 | 2002-05-08 02:01:14 +0000 | [diff] [blame] | 1620 | void __pthread_initialize ( void ) |
| 1621 | { |
sewardj | bea1caa | 2002-05-10 23:20:58 +0000 | [diff] [blame] | 1622 | ensure_valgrind("__pthread_initialize"); |
sewardj | bb99078 | 2002-05-08 02:01:14 +0000 | [diff] [blame] | 1623 | } |
| 1624 | |
| 1625 | |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1626 | /* --------------------------------------------------- |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1627 | LIBRARY-PRIVATE THREAD SPECIFIC STATE |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1628 | ------------------------------------------------ */ |
| 1629 | |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1630 | #include <resolv.h> |
| 1631 | static int thread_specific_errno[VG_N_THREADS]; |
| 1632 | static int thread_specific_h_errno[VG_N_THREADS]; |
| 1633 | static struct __res_state |
| 1634 | thread_specific_res_state[VG_N_THREADS]; |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1635 | |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 1636 | #undef errno |
| 1637 | extern int errno; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1638 | int* __errno_location ( void ) |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1639 | { |
| 1640 | int tid; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1641 | /* ensure_valgrind("__errno_location"); */ |
| 1642 | VALGRIND_MAGIC_SEQUENCE(tid, 1 /* default */, |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1643 | VG_USERREQ__PTHREAD_GET_THREADID, |
| 1644 | 0, 0, 0, 0); |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1645 | /* 'cos I'm paranoid ... */ |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 1646 | if (tid < 1 || tid >= VG_N_THREADS) |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1647 | barf("__errno_location: invalid ThreadId"); |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 1648 | if (tid == 1) |
| 1649 | return &errno; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1650 | return & thread_specific_errno[tid]; |
| 1651 | } |
| 1652 | |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 1653 | #undef h_errno |
| 1654 | extern int h_errno; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1655 | int* __h_errno_location ( void ) |
| 1656 | { |
| 1657 | int tid; |
| 1658 | /* ensure_valgrind("__h_errno_location"); */ |
| 1659 | VALGRIND_MAGIC_SEQUENCE(tid, 1 /* default */, |
| 1660 | VG_USERREQ__PTHREAD_GET_THREADID, |
| 1661 | 0, 0, 0, 0); |
| 1662 | /* 'cos I'm paranoid ... */ |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 1663 | if (tid < 1 || tid >= VG_N_THREADS) |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1664 | barf("__h_errno_location: invalid ThreadId"); |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 1665 | if (tid == 1) |
| 1666 | return &h_errno; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1667 | return & thread_specific_h_errno[tid]; |
| 1668 | } |
| 1669 | |
sewardj | b0ff103 | 2002-08-06 09:02:53 +0000 | [diff] [blame] | 1670 | |
| 1671 | #undef _res |
| 1672 | extern struct __res_state _res; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1673 | struct __res_state* __res_state ( void ) |
| 1674 | { |
| 1675 | int tid; |
| 1676 | /* ensure_valgrind("__res_state"); */ |
| 1677 | VALGRIND_MAGIC_SEQUENCE(tid, 1 /* default */, |
| 1678 | VG_USERREQ__PTHREAD_GET_THREADID, |
| 1679 | 0, 0, 0, 0); |
| 1680 | /* 'cos I'm paranoid ... */ |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 1681 | if (tid < 1 || tid >= VG_N_THREADS) |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1682 | barf("__res_state: invalid ThreadId"); |
sewardj | b0ff103 | 2002-08-06 09:02:53 +0000 | [diff] [blame] | 1683 | if (tid == 1) |
| 1684 | return & _res; |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 1685 | return & thread_specific_res_state[tid]; |
sewardj | f8f819e | 2002-04-17 23:21:37 +0000 | [diff] [blame] | 1686 | } |
| 1687 | |
| 1688 | |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1689 | /* --------------------------------------------------- |
| 1690 | LIBC-PRIVATE SPECIFIC DATA |
| 1691 | ------------------------------------------------ */ |
| 1692 | |
| 1693 | /* Relies on assumption that initial private data is NULL. This |
| 1694 | should be fixed somehow. */ |
| 1695 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1696 | /* The allowable keys (indices) (all 3 of them). |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1697 | From sysdeps/pthread/bits/libc-tsd.h |
| 1698 | */ |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1699 | /* as per glibc anoncvs HEAD of 20021001. */ |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1700 | enum __libc_tsd_key_t { _LIBC_TSD_KEY_MALLOC = 0, |
| 1701 | _LIBC_TSD_KEY_DL_ERROR, |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1702 | _LIBC_TSD_KEY_RPC_VARS, |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1703 | _LIBC_TSD_KEY_LOCALE, |
| 1704 | _LIBC_TSD_KEY_CTYPE_B, |
| 1705 | _LIBC_TSD_KEY_CTYPE_TOLOWER, |
| 1706 | _LIBC_TSD_KEY_CTYPE_TOUPPER, |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1707 | _LIBC_TSD_KEY_N }; |
| 1708 | |
| 1709 | /* Auto-initialising subsystem. libc_specifics_inited is set |
| 1710 | after initialisation. libc_specifics_inited_mx guards it. */ |
| 1711 | static int libc_specifics_inited = 0; |
| 1712 | static pthread_mutex_t libc_specifics_inited_mx = PTHREAD_MUTEX_INITIALIZER; |
| 1713 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1714 | |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1715 | /* These are the keys we must initialise the first time. */ |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1716 | static pthread_key_t libc_specifics_keys[_LIBC_TSD_KEY_N]; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1717 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1718 | |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1719 | /* Initialise the keys, if they are not already initialised. */ |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1720 | static |
| 1721 | void init_libc_tsd_keys ( void ) |
| 1722 | { |
| 1723 | int res, i; |
| 1724 | pthread_key_t k; |
| 1725 | |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1726 | /* Don't fall into deadlock if we get called again whilst we still |
| 1727 | hold the lock, via the __uselocale() call herein. */ |
| 1728 | if (libc_specifics_inited != 0) |
| 1729 | return; |
| 1730 | |
| 1731 | /* Take the lock. */ |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1732 | res = __pthread_mutex_lock(&libc_specifics_inited_mx); |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1733 | if (res != 0) barf("init_libc_tsd_keys: lock"); |
| 1734 | |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1735 | /* Now test again, to be sure there is no mistake. */ |
| 1736 | if (libc_specifics_inited != 0) { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1737 | res = __pthread_mutex_unlock(&libc_specifics_inited_mx); |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1738 | if (res != 0) barf("init_libc_tsd_keys: unlock(1)"); |
| 1739 | return; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1740 | } |
| 1741 | |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1742 | /* Actually do the initialisation. */ |
| 1743 | /* printf("INIT libc specifics\n"); */ |
| 1744 | for (i = 0; i < _LIBC_TSD_KEY_N; i++) { |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1745 | res = __pthread_key_create(&k, NULL); |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1746 | if (res != 0) barf("init_libc_tsd_keys: create"); |
| 1747 | libc_specifics_keys[i] = k; |
| 1748 | } |
| 1749 | |
| 1750 | /* Signify init done. */ |
| 1751 | libc_specifics_inited = 1; |
| 1752 | |
| 1753 | # ifdef GLIBC_2_3 |
| 1754 | /* Set the initialising thread's locale to the global (default) |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1755 | locale. A hack in support of glibc-2.3. This does the biz for |
| 1756 | the root thread. For all other threads we run this in |
| 1757 | thread_wrapper(), which does the real work of |
| 1758 | pthread_create(). */ |
| 1759 | /* assert that we are the root thread. I don't know if this is |
| 1760 | really a valid assertion to make; if it breaks I'll reconsider |
| 1761 | it. */ |
| 1762 | my_assert(pthread_self() == 1); |
sewardj | 08c7f01 | 2002-10-07 23:56:55 +0000 | [diff] [blame] | 1763 | __uselocale(LC_GLOBAL_LOCALE); |
| 1764 | # endif |
| 1765 | |
| 1766 | /* Unlock and return. */ |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1767 | res = __pthread_mutex_unlock(&libc_specifics_inited_mx); |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1768 | if (res != 0) barf("init_libc_tsd_keys: unlock"); |
| 1769 | } |
| 1770 | |
| 1771 | |
| 1772 | static int |
| 1773 | libc_internal_tsd_set ( enum __libc_tsd_key_t key, |
| 1774 | const void * pointer ) |
| 1775 | { |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1776 | int res; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1777 | /* printf("SET SET SET key %d ptr %p\n", key, pointer); */ |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1778 | if (key < _LIBC_TSD_KEY_MALLOC || key >= _LIBC_TSD_KEY_N) |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1779 | barf("libc_internal_tsd_set: invalid key"); |
| 1780 | init_libc_tsd_keys(); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1781 | res = __pthread_setspecific(libc_specifics_keys[key], pointer); |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1782 | if (res != 0) barf("libc_internal_tsd_set: setspecific failed"); |
| 1783 | return 0; |
| 1784 | } |
| 1785 | |
| 1786 | static void * |
| 1787 | libc_internal_tsd_get ( enum __libc_tsd_key_t key ) |
| 1788 | { |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1789 | void* v; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1790 | /* printf("GET GET GET key %d\n", key); */ |
sewardj | cb7f08a | 2002-10-02 09:41:49 +0000 | [diff] [blame] | 1791 | if (key < _LIBC_TSD_KEY_MALLOC || key >= _LIBC_TSD_KEY_N) |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1792 | barf("libc_internal_tsd_get: invalid key"); |
| 1793 | init_libc_tsd_keys(); |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1794 | v = __pthread_getspecific(libc_specifics_keys[key]); |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1795 | /* if (v == NULL) barf("libc_internal_tsd_set: getspecific failed"); */ |
| 1796 | return v; |
| 1797 | } |
| 1798 | |
| 1799 | |
sewardj | 70adeb2 | 2002-04-27 01:35:38 +0000 | [diff] [blame] | 1800 | int (*__libc_internal_tsd_set) |
| 1801 | (enum __libc_tsd_key_t key, const void * pointer) |
| 1802 | = libc_internal_tsd_set; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1803 | |
sewardj | 70adeb2 | 2002-04-27 01:35:38 +0000 | [diff] [blame] | 1804 | void* (*__libc_internal_tsd_get) |
| 1805 | (enum __libc_tsd_key_t key) |
| 1806 | = libc_internal_tsd_get; |
sewardj | 5716dbb | 2002-04-26 03:28:18 +0000 | [diff] [blame] | 1807 | |
| 1808 | |
sewardj | 00a66b1 | 2002-10-12 16:42:35 +0000 | [diff] [blame] | 1809 | #ifdef GLIBC_2_3 |
| 1810 | /* This one was first spotted be me in the glibc-2.2.93 sources. */ |
| 1811 | static void** |
| 1812 | libc_internal_tsd_address ( enum __libc_tsd_key_t key ) |
| 1813 | { |
| 1814 | void** v; |
| 1815 | /* printf("ADDR ADDR ADDR key %d\n", key); */ |
| 1816 | if (key < _LIBC_TSD_KEY_MALLOC || key >= _LIBC_TSD_KEY_N) |
| 1817 | barf("libc_internal_tsd_address: invalid key"); |
| 1818 | init_libc_tsd_keys(); |
| 1819 | v = __pthread_getspecific_addr(libc_specifics_keys[key]); |
| 1820 | return v; |
| 1821 | } |
| 1822 | |
| 1823 | void ** (*__libc_internal_tsd_address) |
| 1824 | (enum __libc_tsd_key_t key) |
| 1825 | = libc_internal_tsd_address; |
| 1826 | #endif |
| 1827 | |
| 1828 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1829 | /* --------------------------------------------------------------------- |
| 1830 | These are here (I think) because they are deemed cancellation |
| 1831 | points by POSIX. For the moment we'll simply pass the call along |
| 1832 | to the corresponding thread-unaware (?) libc routine. |
| 1833 | ------------------------------------------------------------------ */ |
| 1834 | |
sewardj | d529a44 | 2002-05-04 19:49:21 +0000 | [diff] [blame] | 1835 | #ifdef GLIBC_2_1 |
| 1836 | extern |
| 1837 | int __sigaction |
| 1838 | (int signum, |
| 1839 | const struct sigaction *act, |
| 1840 | struct sigaction *oldact); |
| 1841 | #else |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1842 | extern |
| 1843 | int __libc_sigaction |
| 1844 | (int signum, |
| 1845 | const struct sigaction *act, |
| 1846 | struct sigaction *oldact); |
sewardj | d529a44 | 2002-05-04 19:49:21 +0000 | [diff] [blame] | 1847 | #endif |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1848 | int sigaction(int signum, |
| 1849 | const struct sigaction *act, |
| 1850 | struct sigaction *oldact) |
| 1851 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1852 | __my_pthread_testcancel(); |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 1853 | # ifdef GLIBC_2_1 |
| 1854 | return __sigaction(signum, act, oldact); |
| 1855 | # else |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1856 | return __libc_sigaction(signum, act, oldact); |
sewardj | 2a1dcce | 2002-04-22 12:45:25 +0000 | [diff] [blame] | 1857 | # endif |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1858 | } |
| 1859 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1860 | extern |
| 1861 | int __libc_accept(int fd, struct sockaddr *addr, socklen_t *len); |
| 1862 | |
| 1863 | WEAK int __accept(int fd, struct sockaddr *addr, socklen_t *len) |
| 1864 | { |
| 1865 | __my_pthread_testcancel(); |
| 1866 | return __libc_accept(fd, addr, len); |
| 1867 | } |
| 1868 | strong_alias(__accept, accept); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1869 | |
| 1870 | extern |
| 1871 | int __libc_connect(int sockfd, |
| 1872 | const struct sockaddr *serv_addr, |
| 1873 | socklen_t addrlen); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1874 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1875 | int connect(int sockfd, |
| 1876 | const struct sockaddr *serv_addr, |
| 1877 | socklen_t addrlen) |
| 1878 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1879 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1880 | return __libc_connect(sockfd, serv_addr, addrlen); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1881 | } |
| 1882 | |
| 1883 | |
| 1884 | extern |
| 1885 | int __libc_fcntl(int fd, int cmd, long arg); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1886 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1887 | int fcntl(int fd, int cmd, long arg) |
| 1888 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1889 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1890 | return __libc_fcntl(fd, cmd, arg); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1891 | } |
| 1892 | |
| 1893 | |
| 1894 | extern |
| 1895 | ssize_t __libc_write(int fd, const void *buf, size_t count); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1896 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1897 | ssize_t write(int fd, const void *buf, size_t count) |
| 1898 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1899 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1900 | return __libc_write(fd, buf, count); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1901 | } |
| 1902 | |
| 1903 | |
| 1904 | extern |
| 1905 | ssize_t __libc_read(int fd, void *buf, size_t count); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1906 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1907 | ssize_t read(int fd, void *buf, size_t count) |
| 1908 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1909 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1910 | return __libc_read(fd, buf, count); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1911 | } |
| 1912 | |
sewardj | f912dfc | 2002-11-13 21:51:10 +0000 | [diff] [blame] | 1913 | extern |
| 1914 | int __libc_open64(const char *pathname, int flags, mode_t mode); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1915 | /* WEAK */ |
sewardj | f912dfc | 2002-11-13 21:51:10 +0000 | [diff] [blame] | 1916 | int open64(const char *pathname, int flags, mode_t mode) |
| 1917 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1918 | return __libc_open64(pathname, flags, mode); |
sewardj | f912dfc | 2002-11-13 21:51:10 +0000 | [diff] [blame] | 1919 | } |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1920 | |
| 1921 | extern |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1922 | int __libc_open(const char *pathname, int flags, mode_t mode); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1923 | /* WEAK */ |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 1924 | int open(const char *pathname, int flags, mode_t mode) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1925 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1926 | return __libc_open(pathname, flags, mode); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1927 | } |
| 1928 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1929 | extern |
| 1930 | int __libc_close(int fd); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1931 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1932 | int close(int fd) |
| 1933 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1934 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1935 | return __libc_close(fd); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1936 | } |
| 1937 | |
| 1938 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1939 | extern |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1940 | pid_t __libc_waitpid(pid_t pid, int *status, int options); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1941 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1942 | pid_t waitpid(pid_t pid, int *status, int options) |
| 1943 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1944 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1945 | return __libc_waitpid(pid, status, options); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1946 | } |
| 1947 | |
| 1948 | |
| 1949 | extern |
| 1950 | int __libc_nanosleep(const struct timespec *req, struct timespec *rem); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1951 | WEAK |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1952 | int __nanosleep(const struct timespec *req, struct timespec *rem) |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1953 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1954 | __my_pthread_testcancel(); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1955 | return __libc_nanosleep(req, rem); |
| 1956 | } |
| 1957 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1958 | extern |
| 1959 | int __libc_pause(void); |
| 1960 | WEAK |
| 1961 | int __pause(void) |
| 1962 | { |
| 1963 | __my_pthread_testcancel(); |
| 1964 | return __libc_pause(); |
| 1965 | } |
| 1966 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 1967 | |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1968 | extern |
| 1969 | int __libc_fsync(int fd); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1970 | WEAK |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1971 | int fsync(int fd) |
| 1972 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1973 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1974 | return __libc_fsync(fd); |
sewardj | e663cb9 | 2002-04-12 10:26:32 +0000 | [diff] [blame] | 1975 | } |
| 1976 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 1977 | |
sewardj | 70c7536 | 2002-04-13 04:18:32 +0000 | [diff] [blame] | 1978 | extern |
| 1979 | off_t __libc_lseek(int fildes, off_t offset, int whence); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1980 | WEAK |
sewardj | 70c7536 | 2002-04-13 04:18:32 +0000 | [diff] [blame] | 1981 | off_t lseek(int fildes, off_t offset, int whence) |
| 1982 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1983 | __my_pthread_testcancel(); |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 1984 | return __libc_lseek(fildes, offset, whence); |
sewardj | 70c7536 | 2002-04-13 04:18:32 +0000 | [diff] [blame] | 1985 | } |
| 1986 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 1987 | |
| 1988 | extern |
| 1989 | __off64_t __libc_lseek64(int fildes, __off64_t offset, int whence); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 1990 | WEAK |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 1991 | __off64_t lseek64(int fildes, __off64_t offset, int whence) |
| 1992 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 1993 | __my_pthread_testcancel(); |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 1994 | return __libc_lseek64(fildes, offset, whence); |
| 1995 | } |
| 1996 | |
| 1997 | |
sewardj | 726c412 | 2002-05-16 23:39:10 +0000 | [diff] [blame] | 1998 | extern |
| 1999 | ssize_t __libc_pread64 (int __fd, void *__buf, size_t __nbytes, |
| 2000 | __off64_t __offset); |
| 2001 | ssize_t __pread64 (int __fd, void *__buf, size_t __nbytes, |
| 2002 | __off64_t __offset) |
| 2003 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2004 | __my_pthread_testcancel(); |
sewardj | 726c412 | 2002-05-16 23:39:10 +0000 | [diff] [blame] | 2005 | return __libc_pread64(__fd, __buf, __nbytes, __offset); |
| 2006 | } |
| 2007 | |
| 2008 | |
sewardj | a18e210 | 2002-05-18 10:43:22 +0000 | [diff] [blame] | 2009 | extern |
| 2010 | ssize_t __libc_pwrite64 (int __fd, const void *__buf, size_t __nbytes, |
| 2011 | __off64_t __offset); |
| 2012 | ssize_t __pwrite64 (int __fd, const void *__buf, size_t __nbytes, |
| 2013 | __off64_t __offset) |
| 2014 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2015 | __my_pthread_testcancel(); |
sewardj | a18e210 | 2002-05-18 10:43:22 +0000 | [diff] [blame] | 2016 | return __libc_pwrite64(__fd, __buf, __nbytes, __offset); |
| 2017 | } |
| 2018 | |
sewardj | 726c412 | 2002-05-16 23:39:10 +0000 | [diff] [blame] | 2019 | |
sewardj | 39b93b1 | 2002-05-18 10:56:27 +0000 | [diff] [blame] | 2020 | extern |
| 2021 | ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2022 | WEAK |
sewardj | 39b93b1 | 2002-05-18 10:56:27 +0000 | [diff] [blame] | 2023 | ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset) |
| 2024 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2025 | __my_pthread_testcancel(); |
sewardj | 39b93b1 | 2002-05-18 10:56:27 +0000 | [diff] [blame] | 2026 | return __libc_pwrite(fd, buf, count, offset); |
| 2027 | } |
| 2028 | |
| 2029 | |
| 2030 | extern |
| 2031 | ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2032 | WEAK |
sewardj | 39b93b1 | 2002-05-18 10:56:27 +0000 | [diff] [blame] | 2033 | ssize_t pread(int fd, void *buf, size_t count, off_t offset) |
| 2034 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2035 | __my_pthread_testcancel(); |
sewardj | 39b93b1 | 2002-05-18 10:56:27 +0000 | [diff] [blame] | 2036 | return __libc_pread(fd, buf, count, offset); |
| 2037 | } |
| 2038 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2039 | extern |
| 2040 | int __libc_recv(int s, void *msg, size_t len, int flags); |
| 2041 | WEAK |
| 2042 | int recv(int s, void *msg, size_t len, int flags) |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 2043 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2044 | __my_pthread_testcancel(); |
| 2045 | return __libc_recv(s, msg, len, flags); |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 2046 | } |
| 2047 | |
| 2048 | extern |
| 2049 | int __libc_send(int s, const void *msg, size_t len, int flags); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2050 | WEAK |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 2051 | int send(int s, const void *msg, size_t len, int flags) |
| 2052 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2053 | __my_pthread_testcancel(); |
sewardj | 6af4b5d | 2002-04-16 04:40:49 +0000 | [diff] [blame] | 2054 | return __libc_send(s, msg, len, flags); |
| 2055 | } |
| 2056 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 2057 | |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 2058 | extern |
| 2059 | int __libc_sendmsg(int s, const struct msghdr *msg, int flags); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2060 | WEAK |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 2061 | int sendmsg(int s, const struct msghdr *msg, int flags) |
| 2062 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2063 | __my_pthread_testcancel(); |
sewardj | 3665ded | 2002-05-16 16:57:25 +0000 | [diff] [blame] | 2064 | return __libc_sendmsg(s, msg, flags); |
| 2065 | } |
| 2066 | |
| 2067 | |
sewardj | 796d6a2 | 2002-04-24 02:28:34 +0000 | [diff] [blame] | 2068 | extern |
sewardj | 59da27a | 2002-06-06 08:33:54 +0000 | [diff] [blame] | 2069 | int __libc_recvmsg(int s, struct msghdr *msg, int flags); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2070 | WEAK |
sewardj | 59da27a | 2002-06-06 08:33:54 +0000 | [diff] [blame] | 2071 | int recvmsg(int s, struct msghdr *msg, int flags) |
| 2072 | { |
| 2073 | __my_pthread_testcancel(); |
| 2074 | return __libc_recvmsg(s, msg, flags); |
| 2075 | } |
| 2076 | |
| 2077 | |
| 2078 | extern |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 2079 | int __libc_recvfrom(int s, void *buf, size_t len, int flags, |
| 2080 | struct sockaddr *from, socklen_t *fromlen); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2081 | WEAK |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 2082 | int recvfrom(int s, void *buf, size_t len, int flags, |
| 2083 | struct sockaddr *from, socklen_t *fromlen) |
| 2084 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2085 | __my_pthread_testcancel(); |
sewardj | 436e058 | 2002-04-26 14:31:40 +0000 | [diff] [blame] | 2086 | return __libc_recvfrom(s, buf, len, flags, from, fromlen); |
| 2087 | } |
| 2088 | |
| 2089 | |
| 2090 | extern |
sewardj | 796d6a2 | 2002-04-24 02:28:34 +0000 | [diff] [blame] | 2091 | int __libc_sendto(int s, const void *msg, size_t len, int flags, |
| 2092 | const struct sockaddr *to, socklen_t tolen); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2093 | WEAK |
sewardj | 796d6a2 | 2002-04-24 02:28:34 +0000 | [diff] [blame] | 2094 | int sendto(int s, const void *msg, size_t len, int flags, |
| 2095 | const struct sockaddr *to, socklen_t tolen) |
| 2096 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2097 | __my_pthread_testcancel(); |
sewardj | 796d6a2 | 2002-04-24 02:28:34 +0000 | [diff] [blame] | 2098 | return __libc_sendto(s, msg, len, flags, to, tolen); |
| 2099 | } |
| 2100 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 2101 | |
sewardj | 369b170 | 2002-04-24 13:28:15 +0000 | [diff] [blame] | 2102 | extern |
| 2103 | int __libc_system(const char* str); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2104 | WEAK |
sewardj | 369b170 | 2002-04-24 13:28:15 +0000 | [diff] [blame] | 2105 | int system(const char* str) |
| 2106 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2107 | __my_pthread_testcancel(); |
sewardj | 369b170 | 2002-04-24 13:28:15 +0000 | [diff] [blame] | 2108 | return __libc_system(str); |
| 2109 | } |
| 2110 | |
sewardj | be32e45 | 2002-04-24 20:29:58 +0000 | [diff] [blame] | 2111 | |
sewardj | ab0b1c3 | 2002-04-24 19:26:47 +0000 | [diff] [blame] | 2112 | extern |
| 2113 | pid_t __libc_wait(int *status); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2114 | WEAK |
sewardj | ab0b1c3 | 2002-04-24 19:26:47 +0000 | [diff] [blame] | 2115 | pid_t wait(int *status) |
| 2116 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2117 | __my_pthread_testcancel(); |
sewardj | ab0b1c3 | 2002-04-24 19:26:47 +0000 | [diff] [blame] | 2118 | return __libc_wait(status); |
| 2119 | } |
| 2120 | |
sewardj | 45b4b37 | 2002-04-16 22:50:32 +0000 | [diff] [blame] | 2121 | |
sewardj | 67f1d58 | 2002-05-24 02:11:32 +0000 | [diff] [blame] | 2122 | extern |
| 2123 | int __libc_msync(const void *start, size_t length, int flags); |
sewardj | 11f0bb4 | 2003-04-26 20:11:15 +0000 | [diff] [blame] | 2124 | WEAK |
sewardj | 67f1d58 | 2002-05-24 02:11:32 +0000 | [diff] [blame] | 2125 | int msync(const void *start, size_t length, int flags) |
| 2126 | { |
sewardj | d140e44 | 2002-05-29 01:21:19 +0000 | [diff] [blame] | 2127 | __my_pthread_testcancel(); |
sewardj | 67f1d58 | 2002-05-24 02:11:32 +0000 | [diff] [blame] | 2128 | return __libc_msync(start, length, flags); |
| 2129 | } |
| 2130 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2131 | strong_alias(close, __close) |
| 2132 | strong_alias(fcntl, __fcntl) |
| 2133 | strong_alias(lseek, __lseek) |
| 2134 | strong_alias(open, __open) |
| 2135 | strong_alias(open64, __open64) |
| 2136 | strong_alias(read, __read) |
| 2137 | strong_alias(wait, __wait) |
| 2138 | strong_alias(write, __write) |
| 2139 | strong_alias(connect, __connect) |
| 2140 | strong_alias(send, __send) |
| 2141 | |
| 2142 | weak_alias (__pread64, pread64) |
| 2143 | weak_alias (__pwrite64, pwrite64) |
| 2144 | weak_alias(__nanosleep, nanosleep) |
| 2145 | weak_alias(__pause, pause) |
| 2146 | |
| 2147 | |
| 2148 | extern |
| 2149 | void __libc_longjmp(jmp_buf env, int val) __attribute((noreturn)); |
| 2150 | /* not weak: WEAK */ |
| 2151 | void longjmp(jmp_buf env, int val) |
| 2152 | { |
| 2153 | __libc_longjmp(env, val); |
| 2154 | } |
| 2155 | |
| 2156 | |
| 2157 | extern void __libc_siglongjmp (sigjmp_buf env, int val) |
| 2158 | __attribute__ ((noreturn)); |
| 2159 | void siglongjmp(sigjmp_buf env, int val) |
| 2160 | { |
| 2161 | kludged("siglongjmp (cleanup handlers are ignored)"); |
| 2162 | __libc_siglongjmp(env, val); |
| 2163 | } |
| 2164 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2165 | |
sewardj | 2cb0034 | 2002-06-28 01:46:26 +0000 | [diff] [blame] | 2166 | /*--- fork and its helper ---*/ |
| 2167 | |
| 2168 | static |
| 2169 | void run_fork_handlers ( int what ) |
| 2170 | { |
| 2171 | ForkHandlerEntry entry; |
| 2172 | int n_h, n_handlers, i, res; |
| 2173 | |
| 2174 | my_assert(what == 0 || what == 1 || what == 2); |
| 2175 | |
| 2176 | /* Fetch old counter */ |
| 2177 | VALGRIND_MAGIC_SEQUENCE(n_handlers, -2 /* default */, |
| 2178 | VG_USERREQ__GET_FHSTACK_USED, |
| 2179 | 0, 0, 0, 0); |
| 2180 | my_assert(n_handlers >= 0 && n_handlers < VG_N_FORKHANDLERSTACK); |
| 2181 | |
| 2182 | /* Prepare handlers (what == 0) are called in opposite order of |
| 2183 | calls to pthread_atfork. Parent and child handlers are called |
| 2184 | in the same order as calls to pthread_atfork. */ |
| 2185 | if (what == 0) |
| 2186 | n_h = n_handlers - 1; |
| 2187 | else |
| 2188 | n_h = 0; |
| 2189 | |
| 2190 | for (i = 0; i < n_handlers; i++) { |
| 2191 | VALGRIND_MAGIC_SEQUENCE(res, -2 /* default */, |
| 2192 | VG_USERREQ__GET_FHSTACK_ENTRY, |
| 2193 | n_h, &entry, 0, 0); |
| 2194 | my_assert(res == 0); |
| 2195 | switch (what) { |
| 2196 | case 0: if (entry.prepare) entry.prepare(); |
| 2197 | n_h--; break; |
| 2198 | case 1: if (entry.parent) entry.parent(); |
| 2199 | n_h++; break; |
| 2200 | case 2: if (entry.child) entry.child(); |
| 2201 | n_h++; break; |
| 2202 | default: barf("run_fork_handlers: invalid what"); |
| 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | if (what != 0 /* prepare */) { |
| 2207 | /* Empty out the stack. */ |
| 2208 | VALGRIND_MAGIC_SEQUENCE(res, -2 /* default */, |
| 2209 | VG_USERREQ__SET_FHSTACK_USED, |
| 2210 | 0, 0, 0, 0); |
| 2211 | my_assert(res == 0); |
| 2212 | } |
| 2213 | } |
| 2214 | |
| 2215 | extern |
| 2216 | pid_t __libc_fork(void); |
| 2217 | pid_t __fork(void) |
| 2218 | { |
| 2219 | pid_t pid; |
| 2220 | __my_pthread_testcancel(); |
| 2221 | __pthread_mutex_lock(&pthread_atfork_lock); |
| 2222 | |
| 2223 | run_fork_handlers(0 /* prepare */); |
| 2224 | pid = __libc_fork(); |
| 2225 | if (pid == 0) { |
| 2226 | /* I am the child */ |
| 2227 | run_fork_handlers(2 /* child */); |
sewardj | d8acdf2 | 2002-11-13 21:57:52 +0000 | [diff] [blame] | 2228 | __pthread_mutex_unlock(&pthread_atfork_lock); |
sewardj | 2cb0034 | 2002-06-28 01:46:26 +0000 | [diff] [blame] | 2229 | __pthread_mutex_init(&pthread_atfork_lock, NULL); |
| 2230 | } else { |
| 2231 | /* I am the parent */ |
| 2232 | run_fork_handlers(1 /* parent */); |
| 2233 | __pthread_mutex_unlock(&pthread_atfork_lock); |
| 2234 | } |
| 2235 | return pid; |
| 2236 | } |
| 2237 | |
| 2238 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2239 | pid_t __vfork(void) |
| 2240 | { |
| 2241 | return __fork(); |
| 2242 | } |
sewardj | 2cb0034 | 2002-06-28 01:46:26 +0000 | [diff] [blame] | 2243 | |
| 2244 | |
sewardj | 08a4c3f | 2002-04-13 03:45:44 +0000 | [diff] [blame] | 2245 | |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2246 | /* --------------------------------------------------------------------- |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2247 | Hacky implementation of semaphores. |
| 2248 | ------------------------------------------------------------------ */ |
| 2249 | |
| 2250 | #include <semaphore.h> |
| 2251 | |
| 2252 | /* This is a terrible way to do the remapping. Plan is to import an |
| 2253 | AVL tree at some point. */ |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2254 | |
| 2255 | typedef |
| 2256 | struct { |
| 2257 | pthread_mutex_t se_mx; |
| 2258 | pthread_cond_t se_cv; |
| 2259 | int count; |
| 2260 | } |
| 2261 | vg_sem_t; |
| 2262 | |
| 2263 | static pthread_mutex_t se_remap_mx = PTHREAD_MUTEX_INITIALIZER; |
| 2264 | |
| 2265 | static int se_remap_used = 0; |
| 2266 | static sem_t* se_remap_orig[VG_N_SEMAPHORES]; |
| 2267 | static vg_sem_t se_remap_new[VG_N_SEMAPHORES]; |
| 2268 | |
| 2269 | static vg_sem_t* se_remap ( sem_t* orig ) |
| 2270 | { |
| 2271 | int res, i; |
| 2272 | res = __pthread_mutex_lock(&se_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2273 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2274 | |
| 2275 | for (i = 0; i < se_remap_used; i++) { |
| 2276 | if (se_remap_orig[i] == orig) |
| 2277 | break; |
| 2278 | } |
| 2279 | if (i == se_remap_used) { |
| 2280 | if (se_remap_used == VG_N_SEMAPHORES) { |
| 2281 | res = pthread_mutex_unlock(&se_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2282 | my_assert(res == 0); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2283 | barf("VG_N_SEMAPHORES is too low. Increase and recompile."); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2284 | } |
| 2285 | se_remap_used++; |
| 2286 | se_remap_orig[i] = orig; |
| 2287 | /* printf("allocated semaphore %d\n", i); */ |
| 2288 | } |
| 2289 | res = __pthread_mutex_unlock(&se_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2290 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2291 | return &se_remap_new[i]; |
| 2292 | } |
| 2293 | |
| 2294 | |
| 2295 | int sem_init(sem_t *sem, int pshared, unsigned int value) |
| 2296 | { |
| 2297 | int res; |
| 2298 | vg_sem_t* vg_sem; |
| 2299 | ensure_valgrind("sem_init"); |
| 2300 | if (pshared != 0) { |
sewardj | 4dced35 | 2002-06-04 22:54:20 +0000 | [diff] [blame] | 2301 | pthread_error("sem_init: unsupported pshared value"); |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 2302 | *(__errno_location()) = ENOSYS; |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2303 | return -1; |
| 2304 | } |
| 2305 | vg_sem = se_remap(sem); |
| 2306 | res = pthread_mutex_init(&vg_sem->se_mx, NULL); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2307 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2308 | res = pthread_cond_init(&vg_sem->se_cv, NULL); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2309 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2310 | vg_sem->count = value; |
| 2311 | return 0; |
| 2312 | } |
| 2313 | |
| 2314 | |
| 2315 | int sem_wait ( sem_t* sem ) |
| 2316 | { |
| 2317 | int res; |
| 2318 | vg_sem_t* vg_sem; |
| 2319 | ensure_valgrind("sem_wait"); |
| 2320 | vg_sem = se_remap(sem); |
| 2321 | res = __pthread_mutex_lock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2322 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2323 | while (vg_sem->count == 0) { |
| 2324 | res = pthread_cond_wait(&vg_sem->se_cv, &vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2325 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2326 | } |
| 2327 | vg_sem->count--; |
| 2328 | res = __pthread_mutex_unlock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2329 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2330 | return 0; |
| 2331 | } |
| 2332 | |
| 2333 | int sem_post ( sem_t* sem ) |
| 2334 | { |
| 2335 | int res; |
| 2336 | vg_sem_t* vg_sem; |
| 2337 | ensure_valgrind("sem_post"); |
| 2338 | vg_sem = se_remap(sem); |
| 2339 | res = __pthread_mutex_lock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2340 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2341 | if (vg_sem->count == 0) { |
| 2342 | vg_sem->count++; |
| 2343 | res = pthread_cond_broadcast(&vg_sem->se_cv); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2344 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2345 | } else { |
| 2346 | vg_sem->count++; |
| 2347 | } |
| 2348 | res = __pthread_mutex_unlock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2349 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2350 | return 0; |
| 2351 | } |
| 2352 | |
| 2353 | |
| 2354 | int sem_trywait ( sem_t* sem ) |
| 2355 | { |
| 2356 | int ret, res; |
| 2357 | vg_sem_t* vg_sem; |
| 2358 | ensure_valgrind("sem_trywait"); |
| 2359 | vg_sem = se_remap(sem); |
| 2360 | res = __pthread_mutex_lock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2361 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2362 | if (vg_sem->count > 0) { |
| 2363 | vg_sem->count--; |
| 2364 | ret = 0; |
| 2365 | } else { |
| 2366 | ret = -1; |
sewardj | 25418ae | 2003-05-09 23:40:34 +0000 | [diff] [blame] | 2367 | *(__errno_location()) = EAGAIN; |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2368 | } |
| 2369 | res = __pthread_mutex_unlock(&vg_sem->se_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2370 | my_assert(res == 0); |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2371 | return ret; |
| 2372 | } |
| 2373 | |
| 2374 | |
| 2375 | int sem_getvalue(sem_t* sem, int * sval) |
| 2376 | { |
| 2377 | vg_sem_t* vg_sem; |
| 2378 | ensure_valgrind("sem_trywait"); |
| 2379 | vg_sem = se_remap(sem); |
| 2380 | *sval = vg_sem->count; |
| 2381 | return 0; |
| 2382 | } |
| 2383 | |
| 2384 | |
| 2385 | int sem_destroy(sem_t * sem) |
| 2386 | { |
| 2387 | kludged("sem_destroy"); |
| 2388 | /* if someone waiting on this semaphore, errno = EBUSY, return -1 */ |
| 2389 | return 0; |
| 2390 | } |
| 2391 | |
sewardj | 9ad92d9 | 2002-10-16 19:45:06 +0000 | [diff] [blame] | 2392 | |
| 2393 | int sem_timedwait(sem_t* sem, const struct timespec *abstime) |
| 2394 | { |
| 2395 | int res; |
| 2396 | vg_sem_t* vg_sem; |
| 2397 | ensure_valgrind("sem_timedwait"); |
| 2398 | vg_sem = se_remap(sem); |
| 2399 | res = __pthread_mutex_lock(&vg_sem->se_mx); |
| 2400 | my_assert(res == 0); |
| 2401 | while ( vg_sem->count == 0 && res != ETIMEDOUT ) { |
| 2402 | res = pthread_cond_timedwait(&vg_sem->se_cv, &vg_sem->se_mx, abstime); |
| 2403 | } |
| 2404 | if ( vg_sem->count > 0 ) { |
| 2405 | vg_sem->count--; |
| 2406 | res = __pthread_mutex_unlock(&vg_sem->se_mx); |
| 2407 | my_assert(res == 0 ); |
| 2408 | return 0; |
| 2409 | } else { |
| 2410 | res = __pthread_mutex_unlock(&vg_sem->se_mx); |
| 2411 | my_assert(res == 0 ); |
| 2412 | *(__errno_location()) = ETIMEDOUT; |
| 2413 | return -1; |
| 2414 | } |
| 2415 | } |
| 2416 | |
sewardj | 8f253ff | 2002-05-19 00:13:34 +0000 | [diff] [blame] | 2417 | |
| 2418 | /* --------------------------------------------------------------------- |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2419 | Reader-writer locks. |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2420 | ------------------------------------------------------------------ */ |
| 2421 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2422 | typedef |
| 2423 | struct { |
| 2424 | int initted; /* != 0 --> in use; sanity check only */ |
| 2425 | int prefer_w; /* != 0 --> prefer writer */ |
| 2426 | int nwait_r; /* # of waiting readers */ |
| 2427 | int nwait_w; /* # of waiting writers */ |
| 2428 | pthread_cond_t cv_r; /* for signalling readers */ |
| 2429 | pthread_cond_t cv_w; /* for signalling writers */ |
| 2430 | pthread_mutex_t mx; |
| 2431 | int status; |
| 2432 | /* allowed range for status: >= -1. -1 means 1 writer currently |
| 2433 | active, >= 0 means N readers currently active. */ |
| 2434 | } |
| 2435 | vg_rwlock_t; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2436 | |
| 2437 | |
| 2438 | static pthread_mutex_t rw_remap_mx = PTHREAD_MUTEX_INITIALIZER; |
| 2439 | |
| 2440 | static int rw_remap_used = 0; |
| 2441 | static pthread_rwlock_t* rw_remap_orig[VG_N_RWLOCKS]; |
| 2442 | static vg_rwlock_t rw_remap_new[VG_N_RWLOCKS]; |
| 2443 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2444 | |
| 2445 | static |
| 2446 | void init_vg_rwlock ( vg_rwlock_t* vg_rwl ) |
| 2447 | { |
| 2448 | int res = 0; |
| 2449 | vg_rwl->initted = 1; |
| 2450 | vg_rwl->prefer_w = 1; |
| 2451 | vg_rwl->nwait_r = 0; |
| 2452 | vg_rwl->nwait_w = 0; |
| 2453 | vg_rwl->status = 0; |
| 2454 | res = pthread_mutex_init(&vg_rwl->mx, NULL); |
| 2455 | res |= pthread_cond_init(&vg_rwl->cv_r, NULL); |
| 2456 | res |= pthread_cond_init(&vg_rwl->cv_w, NULL); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2457 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2458 | } |
| 2459 | |
| 2460 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2461 | /* Take the address of a LinuxThreads rwlock_t and return the shadow |
| 2462 | address of our version. Further, if the LinuxThreads version |
| 2463 | appears to have been statically initialised, do the same to the one |
| 2464 | we allocate here. The pthread_rwlock_t.__rw_readers field is set |
| 2465 | to zero by PTHREAD_RWLOCK_INITIALIZER, so we take zero as meaning |
| 2466 | uninitialised and non-zero meaning initialised. |
| 2467 | */ |
| 2468 | static vg_rwlock_t* rw_remap ( pthread_rwlock_t* orig ) |
| 2469 | { |
| 2470 | int res, i; |
| 2471 | vg_rwlock_t* vg_rwl; |
| 2472 | res = __pthread_mutex_lock(&rw_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2473 | my_assert(res == 0); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2474 | |
| 2475 | for (i = 0; i < rw_remap_used; i++) { |
| 2476 | if (rw_remap_orig[i] == orig) |
| 2477 | break; |
| 2478 | } |
| 2479 | if (i == rw_remap_used) { |
| 2480 | if (rw_remap_used == VG_N_RWLOCKS) { |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2481 | res = __pthread_mutex_unlock(&rw_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2482 | my_assert(res == 0); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2483 | barf("VG_N_RWLOCKS is too low. Increase and recompile."); |
| 2484 | } |
| 2485 | rw_remap_used++; |
| 2486 | rw_remap_orig[i] = orig; |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2487 | rw_remap_new[i].initted = 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2488 | if (0) printf("allocated rwlock %d\n", i); |
| 2489 | } |
| 2490 | res = __pthread_mutex_unlock(&rw_remap_mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2491 | my_assert(res == 0); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2492 | vg_rwl = &rw_remap_new[i]; |
| 2493 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2494 | /* Initialise the shadow, if required. */ |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2495 | if (orig->__rw_readers == 0) { |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2496 | orig->__rw_readers = 1; |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2497 | init_vg_rwlock(vg_rwl); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2498 | if (orig->__rw_kind == PTHREAD_RWLOCK_PREFER_READER_NP) |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2499 | vg_rwl->prefer_w = 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2500 | } |
| 2501 | |
| 2502 | return vg_rwl; |
| 2503 | } |
| 2504 | |
| 2505 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2506 | int pthread_rwlock_init ( pthread_rwlock_t* orig, |
| 2507 | const pthread_rwlockattr_t* attr ) |
| 2508 | { |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2509 | vg_rwlock_t* rwl; |
| 2510 | if (0) printf ("pthread_rwlock_init\n"); |
| 2511 | /* Force the remapper to initialise the shadow. */ |
| 2512 | orig->__rw_readers = 0; |
| 2513 | /* Install the lock preference; the remapper needs to know it. */ |
| 2514 | orig->__rw_kind = PTHREAD_RWLOCK_DEFAULT_NP; |
| 2515 | if (attr) |
| 2516 | orig->__rw_kind = attr->__lockkind; |
| 2517 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2518 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2519 | } |
| 2520 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2521 | |
| 2522 | static |
| 2523 | void pthread_rwlock_rdlock_CANCEL_HDLR ( void* rwl_v ) |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2524 | { |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2525 | vg_rwlock_t* rwl = (vg_rwlock_t*)rwl_v; |
| 2526 | rwl->nwait_r--; |
| 2527 | pthread_mutex_unlock (&rwl->mx); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2528 | } |
| 2529 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2530 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2531 | int pthread_rwlock_rdlock ( pthread_rwlock_t* orig ) |
| 2532 | { |
| 2533 | int res; |
| 2534 | vg_rwlock_t* rwl; |
| 2535 | if (0) printf ("pthread_rwlock_rdlock\n"); |
| 2536 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2537 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2538 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2539 | if (!rwl->initted) { |
| 2540 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2541 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2542 | return EINVAL; |
| 2543 | } |
| 2544 | if (rwl->status < 0) { |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2545 | my_assert(rwl->status == -1); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2546 | rwl->nwait_r++; |
| 2547 | pthread_cleanup_push( pthread_rwlock_rdlock_CANCEL_HDLR, rwl ); |
| 2548 | while (1) { |
| 2549 | if (rwl->status == 0) break; |
| 2550 | res = pthread_cond_wait(&rwl->cv_r, &rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2551 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2552 | } |
| 2553 | pthread_cleanup_pop(0); |
| 2554 | rwl->nwait_r--; |
| 2555 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2556 | my_assert(rwl->status >= 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2557 | rwl->status++; |
| 2558 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2559 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2560 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2561 | } |
| 2562 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2563 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2564 | int pthread_rwlock_tryrdlock ( pthread_rwlock_t* orig ) |
| 2565 | { |
| 2566 | int res; |
| 2567 | vg_rwlock_t* rwl; |
| 2568 | if (0) printf ("pthread_rwlock_tryrdlock\n"); |
| 2569 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2570 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2571 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2572 | if (!rwl->initted) { |
| 2573 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2574 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2575 | return EINVAL; |
| 2576 | } |
| 2577 | if (rwl->status == -1) { |
| 2578 | /* Writer active; we have to give up. */ |
| 2579 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2580 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2581 | return EBUSY; |
| 2582 | } |
| 2583 | /* Success */ |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2584 | my_assert(rwl->status >= 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2585 | rwl->status++; |
| 2586 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2587 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2588 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2589 | } |
| 2590 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2591 | |
| 2592 | static |
| 2593 | void pthread_rwlock_wrlock_CANCEL_HDLR ( void* rwl_v ) |
| 2594 | { |
| 2595 | vg_rwlock_t* rwl = (vg_rwlock_t*)rwl_v; |
| 2596 | rwl->nwait_w--; |
| 2597 | pthread_mutex_unlock (&rwl->mx); |
| 2598 | } |
| 2599 | |
| 2600 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2601 | int pthread_rwlock_wrlock ( pthread_rwlock_t* orig ) |
| 2602 | { |
| 2603 | int res; |
| 2604 | vg_rwlock_t* rwl; |
| 2605 | if (0) printf ("pthread_rwlock_wrlock\n"); |
| 2606 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2607 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2608 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2609 | if (!rwl->initted) { |
| 2610 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2611 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2612 | return EINVAL; |
| 2613 | } |
| 2614 | if (rwl->status != 0) { |
| 2615 | rwl->nwait_w++; |
| 2616 | pthread_cleanup_push( pthread_rwlock_wrlock_CANCEL_HDLR, rwl ); |
| 2617 | while (1) { |
| 2618 | if (rwl->status == 0) break; |
| 2619 | res = pthread_cond_wait(&rwl->cv_w, &rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2620 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2621 | } |
| 2622 | pthread_cleanup_pop(0); |
| 2623 | rwl->nwait_w--; |
| 2624 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2625 | my_assert(rwl->status == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2626 | rwl->status = -1; |
| 2627 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2628 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2629 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2630 | } |
| 2631 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2632 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2633 | int pthread_rwlock_trywrlock ( pthread_rwlock_t* orig ) |
| 2634 | { |
| 2635 | int res; |
| 2636 | vg_rwlock_t* rwl; |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2637 | if (0) printf ("pthread_wrlock_trywrlock\n"); |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2638 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2639 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2640 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2641 | if (!rwl->initted) { |
| 2642 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2643 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2644 | return EINVAL; |
| 2645 | } |
| 2646 | if (rwl->status != 0) { |
| 2647 | /* Reader(s) or a writer active; we have to give up. */ |
| 2648 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2649 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2650 | return EBUSY; |
| 2651 | } |
| 2652 | /* Success */ |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2653 | my_assert(rwl->status == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2654 | rwl->status = -1; |
| 2655 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2656 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2657 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2658 | } |
| 2659 | |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2660 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2661 | int pthread_rwlock_unlock ( pthread_rwlock_t* orig ) |
| 2662 | { |
| 2663 | int res; |
| 2664 | vg_rwlock_t* rwl; |
| 2665 | if (0) printf ("pthread_rwlock_unlock\n"); |
| 2666 | rwl = rw_remap ( orig ); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2667 | rwl = rw_remap ( orig ); |
| 2668 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2669 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2670 | if (!rwl->initted) { |
| 2671 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2672 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2673 | return EINVAL; |
| 2674 | } |
| 2675 | if (rwl->status == 0) { |
| 2676 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2677 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2678 | return EPERM; |
| 2679 | } |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2680 | my_assert(rwl->status != 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2681 | if (rwl->status == -1) { |
| 2682 | rwl->status = 0; |
| 2683 | } else { |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2684 | my_assert(rwl->status > 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2685 | rwl->status--; |
| 2686 | } |
| 2687 | |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2688 | my_assert(rwl->status >= 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2689 | |
| 2690 | if (rwl->prefer_w) { |
| 2691 | |
| 2692 | /* Favour waiting writers, if any. */ |
| 2693 | if (rwl->nwait_w > 0) { |
| 2694 | /* Writer(s) are waiting. */ |
| 2695 | if (rwl->status == 0) { |
| 2696 | /* We can let a writer in. */ |
| 2697 | res = pthread_cond_signal(&rwl->cv_w); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2698 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2699 | } else { |
| 2700 | /* There are still readers active. Do nothing; eventually |
| 2701 | they will disappear, at which point a writer will be |
| 2702 | admitted. */ |
| 2703 | } |
| 2704 | } |
| 2705 | else |
| 2706 | /* No waiting writers. */ |
| 2707 | if (rwl->nwait_r > 0) { |
| 2708 | /* Let in a waiting reader. */ |
| 2709 | res = pthread_cond_signal(&rwl->cv_r); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2710 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2711 | } |
| 2712 | |
| 2713 | } else { |
| 2714 | |
| 2715 | /* Favour waiting readers, if any. */ |
| 2716 | if (rwl->nwait_r > 0) { |
| 2717 | /* Reader(s) are waiting; let one in. */ |
| 2718 | res = pthread_cond_signal(&rwl->cv_r); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2719 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2720 | } |
| 2721 | else |
| 2722 | /* No waiting readers. */ |
| 2723 | if (rwl->nwait_w > 0 && rwl->status == 0) { |
| 2724 | /* We have waiting writers and no active readers; let a |
| 2725 | writer in. */ |
| 2726 | res = pthread_cond_signal(&rwl->cv_w); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2727 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2732 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2733 | return 0; |
| 2734 | } |
| 2735 | |
| 2736 | |
| 2737 | int pthread_rwlock_destroy ( pthread_rwlock_t *orig ) |
| 2738 | { |
| 2739 | int res; |
| 2740 | vg_rwlock_t* rwl; |
| 2741 | if (0) printf ("pthread_rwlock_destroy\n"); |
| 2742 | rwl = rw_remap ( orig ); |
| 2743 | res = __pthread_mutex_lock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2744 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2745 | if (!rwl->initted) { |
| 2746 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2747 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2748 | return EINVAL; |
| 2749 | } |
| 2750 | if (rwl->status != 0 || rwl->nwait_r > 0 || rwl->nwait_w > 0) { |
| 2751 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2752 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2753 | return EBUSY; |
| 2754 | } |
| 2755 | rwl->initted = 0; |
| 2756 | res = __pthread_mutex_unlock(&rwl->mx); |
sewardj | 2d94c11 | 2002-06-03 01:25:54 +0000 | [diff] [blame] | 2757 | my_assert(res == 0); |
sewardj | 2d8b3f0 | 2002-06-01 14:14:19 +0000 | [diff] [blame] | 2758 | return 0; |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2759 | } |
| 2760 | |
| 2761 | |
sewardj | 47e4e31 | 2002-06-18 09:24:34 +0000 | [diff] [blame] | 2762 | /* Copied directly from LinuxThreads. */ |
| 2763 | int |
| 2764 | pthread_rwlockattr_init (pthread_rwlockattr_t *attr) |
| 2765 | { |
| 2766 | attr->__lockkind = 0; |
| 2767 | attr->__pshared = PTHREAD_PROCESS_PRIVATE; |
| 2768 | |
| 2769 | return 0; |
| 2770 | } |
| 2771 | |
sewardj | fe18eb8 | 2002-07-13 12:58:44 +0000 | [diff] [blame] | 2772 | /* Copied directly from LinuxThreads. */ |
| 2773 | int |
sewardj | 5706bfa | 2002-12-08 23:42:17 +0000 | [diff] [blame] | 2774 | pthread_rwlockattr_destroy (pthread_rwlockattr_t *attr) |
| 2775 | { |
| 2776 | return 0; |
| 2777 | } |
| 2778 | |
| 2779 | /* Copied directly from LinuxThreads. */ |
| 2780 | int |
sewardj | fe18eb8 | 2002-07-13 12:58:44 +0000 | [diff] [blame] | 2781 | pthread_rwlockattr_setpshared (pthread_rwlockattr_t *attr, int pshared) |
| 2782 | { |
| 2783 | if (pshared != PTHREAD_PROCESS_PRIVATE && pshared != PTHREAD_PROCESS_SHARED) |
| 2784 | return EINVAL; |
| 2785 | |
| 2786 | /* For now it is not possible to shared a conditional variable. */ |
| 2787 | if (pshared != PTHREAD_PROCESS_PRIVATE) |
| 2788 | return ENOSYS; |
| 2789 | |
| 2790 | attr->__pshared = pshared; |
| 2791 | |
| 2792 | return 0; |
| 2793 | } |
| 2794 | |
sewardj | 47e4e31 | 2002-06-18 09:24:34 +0000 | [diff] [blame] | 2795 | |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2796 | |
| 2797 | /* --------------------------------------------------------------------- |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2798 | Manage the allocation and use of RT signals. The Valgrind core |
| 2799 | uses one. glibc needs us to implement this to make RT signals |
| 2800 | work; things just seem to crash if we don't. |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2801 | ------------------------------------------------------------------ */ |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2802 | int __libc_current_sigrtmin (void) |
| 2803 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2804 | return VG_(sig_rtmin); |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2805 | } |
| 2806 | |
| 2807 | int __libc_current_sigrtmax (void) |
| 2808 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2809 | return VG_(sig_rtmax); |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2810 | } |
| 2811 | |
| 2812 | int __libc_allocate_rtsig (int high) |
| 2813 | { |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 2814 | return VG_(sig_alloc_rtsig)(high); |
sewardj | 262b5be | 2003-04-26 21:19:53 +0000 | [diff] [blame] | 2815 | } |
| 2816 | |
sewardj | d5bef57 | 2002-10-23 21:49:33 +0000 | [diff] [blame] | 2817 | /* --------------------------------------------------------------------- |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2818 | B'stard. |
| 2819 | ------------------------------------------------------------------ */ |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2820 | strong_alias(__pthread_mutex_lock, pthread_mutex_lock) |
| 2821 | strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock) |
| 2822 | strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock) |
| 2823 | strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init) |
| 2824 | weak_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype) |
sewardj | f099551 | 2003-07-06 01:29:49 +0000 | [diff] [blame] | 2825 | weak_alias(__pthread_mutexattr_setpshared, pthread_mutexattr_setpshared) |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2826 | strong_alias(__pthread_mutex_init, pthread_mutex_init) |
| 2827 | strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy) |
| 2828 | strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy) |
| 2829 | strong_alias(__pthread_once, pthread_once) |
| 2830 | strong_alias(__pthread_atfork, pthread_atfork) |
| 2831 | strong_alias(__pthread_key_create, pthread_key_create) |
| 2832 | strong_alias(__pthread_getspecific, pthread_getspecific) |
| 2833 | strong_alias(__pthread_setspecific, pthread_setspecific) |
| 2834 | |
sewardj | d529a44 | 2002-05-04 19:49:21 +0000 | [diff] [blame] | 2835 | #ifndef GLIBC_2_1 |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2836 | strong_alias(sigaction, __sigaction) |
sewardj | d529a44 | 2002-05-04 19:49:21 +0000 | [diff] [blame] | 2837 | #endif |
| 2838 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2839 | weak_alias(__fork, fork) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2840 | weak_alias(__vfork, vfork) |
sewardj | f0b0645 | 2002-06-04 08:38:04 +0000 | [diff] [blame] | 2841 | weak_alias (__pthread_kill_other_threads_np, pthread_kill_other_threads_np) |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2842 | |
| 2843 | /*--------------------------------------------------*/ |
| 2844 | |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2845 | weak_alias(pthread_rwlock_rdlock, __pthread_rwlock_rdlock) |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2846 | weak_alias(pthread_rwlock_unlock, __pthread_rwlock_unlock) |
sewardj | 262b029 | 2002-05-01 00:03:16 +0000 | [diff] [blame] | 2847 | weak_alias(pthread_rwlock_wrlock, __pthread_rwlock_wrlock) |
sewardj | 060b04f | 2002-04-26 21:01:13 +0000 | [diff] [blame] | 2848 | |
sewardj | a1ac5cb | 2002-05-27 13:00:05 +0000 | [diff] [blame] | 2849 | weak_alias(pthread_rwlock_destroy, __pthread_rwlock_destroy) |
| 2850 | weak_alias(pthread_rwlock_init, __pthread_rwlock_init) |
| 2851 | weak_alias(pthread_rwlock_tryrdlock, __pthread_rwlock_tryrdlock) |
| 2852 | weak_alias(pthread_rwlock_trywrlock, __pthread_rwlock_trywrlock) |
| 2853 | |
sewardj | 060b04f | 2002-04-26 21:01:13 +0000 | [diff] [blame] | 2854 | |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2855 | /* I've no idea what these are, but they get called quite a lot. |
| 2856 | Anybody know? */ |
| 2857 | |
njn | ff28df9 | 2003-10-12 17:26:04 +0000 | [diff] [blame] | 2858 | #ifndef __UCLIBC__ |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2859 | #undef _IO_flockfile |
| 2860 | void _IO_flockfile ( _IO_FILE * file ) |
| 2861 | { |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 2862 | pthread_mutex_lock(file->_lock); |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2863 | } |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2864 | weak_alias(_IO_flockfile, flockfile); |
| 2865 | |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2866 | #undef _IO_funlockfile |
| 2867 | void _IO_funlockfile ( _IO_FILE * file ) |
| 2868 | { |
sewardj | 853f55d | 2002-04-26 00:27:53 +0000 | [diff] [blame] | 2869 | pthread_mutex_unlock(file->_lock); |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2870 | } |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2871 | weak_alias(_IO_funlockfile, funlockfile); |
njn | ff28df9 | 2003-10-12 17:26:04 +0000 | [diff] [blame] | 2872 | #endif |
sewardj | 5905fae | 2002-04-26 13:25:00 +0000 | [diff] [blame] | 2873 | |
sewardj | 3b13f0e | 2002-04-25 20:17:29 +0000 | [diff] [blame] | 2874 | |
sewardj | d4f2c71 | 2002-04-30 10:20:10 +0000 | [diff] [blame] | 2875 | /* This doesn't seem to be needed to simulate libpthread.so's external |
| 2876 | interface, but many people complain about its absence. */ |
| 2877 | |
| 2878 | strong_alias(__pthread_mutexattr_settype, __pthread_mutexattr_setkind_np) |
| 2879 | weak_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np) |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 2880 | |
sewardj | 5e657c3 | 2003-10-12 08:33:30 +0000 | [diff] [blame] | 2881 | /* POSIX spinlocks, taken from glibc linuxthreads/sysdeps/i386 */ |
| 2882 | |
| 2883 | typedef volatile int pthread_spinlock_t; /* Huh? Guarded by __USE_XOPEN2K */ |
| 2884 | |
| 2885 | int pthread_spin_init(pthread_spinlock_t *lock, int pshared) |
| 2886 | { |
| 2887 | /* We can ignore the `pshared' parameter. Since we are busy-waiting |
| 2888 | all processes which can access the memory location `lock' points |
| 2889 | to can use the spinlock. */ |
| 2890 | *lock = 1; |
| 2891 | return 0; |
| 2892 | } |
| 2893 | |
| 2894 | int pthread_spin_lock(pthread_spinlock_t *lock) |
| 2895 | { |
| 2896 | asm volatile |
| 2897 | ("\n" |
| 2898 | "1:\n\t" |
| 2899 | "lock; decl %0\n\t" |
| 2900 | "js 2f\n\t" |
| 2901 | ".section .text.spinlock,\"ax\"\n" |
| 2902 | "2:\n\t" |
| 2903 | "cmpl $0,%0\n\t" |
| 2904 | "rep; nop\n\t" |
| 2905 | "jle 2b\n\t" |
| 2906 | "jmp 1b\n\t" |
| 2907 | ".previous" |
| 2908 | : "=m" (*lock)); |
| 2909 | return 0; |
| 2910 | } |
| 2911 | |
| 2912 | int pthread_spin_unlock(pthread_spinlock_t *lock) |
| 2913 | { |
| 2914 | asm volatile |
| 2915 | ("movl $1,%0" |
| 2916 | : "=m" (*lock)); |
| 2917 | return 0; |
| 2918 | } |
| 2919 | |
| 2920 | int pthread_spin_destroy(pthread_spinlock_t *lock) |
| 2921 | { |
| 2922 | /* Nothing to do. */ |
| 2923 | return 0; |
| 2924 | } |
| 2925 | |
| 2926 | int pthread_spin_trylock(pthread_spinlock_t *lock) |
| 2927 | { |
| 2928 | int oldval; |
| 2929 | |
| 2930 | asm volatile |
| 2931 | ("xchgl %0,%1" |
| 2932 | : "=r" (oldval), "=m" (*lock) |
| 2933 | : "0" (0)); |
| 2934 | return oldval > 0 ? 0 : EBUSY; |
| 2935 | } |
sewardj | 439d45e | 2002-05-03 20:43:10 +0000 | [diff] [blame] | 2936 | |
| 2937 | /*--------------------------------------------------------------------*/ |
| 2938 | /*--- end vg_libpthread.c ---*/ |
| 2939 | /*--------------------------------------------------------------------*/ |