sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- pthread intercepts for thread checking. ---*/ |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 4 | /*--- hg_intercepts.c ---*/ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
| 8 | This file is part of Helgrind, a Valgrind tool for detecting errors |
| 9 | in threaded programs. |
| 10 | |
sewardj | ec062e8 | 2011-10-23 07:32:08 +0000 | [diff] [blame] | 11 | Copyright (C) 2007-2011 OpenWorks LLP |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 12 | info@open-works.co.uk |
| 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 | |
| 29 | The GNU General Public License is contained in the file COPYING. |
| 30 | |
| 31 | Neither the names of the U.S. Department of Energy nor the |
| 32 | University of California nor the names of its contributors may be |
| 33 | used to endorse or promote products derived from this software |
| 34 | without prior written permission. |
| 35 | */ |
| 36 | |
| 37 | /* RUNS ON SIMULATED CPU |
| 38 | Interceptors for pthread_* functions, so that tc_main can see |
| 39 | significant thread events. |
| 40 | |
| 41 | Important: when adding a function wrapper to this file, remember to |
| 42 | add a test case to tc20_verifywrap.c. A common cause of failure is |
| 43 | for wrappers to not engage on different distros, and |
| 44 | tc20_verifywrap essentially checks that each wrapper is really |
| 45 | doing something. |
| 46 | */ |
| 47 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 48 | // DDD: for Darwin, need to have non-"@*"-suffixed versions for all pthread |
| 49 | // functions that currently have them. |
| 50 | // Note also, in the comments and code below, all Darwin symbols start |
| 51 | // with a leading underscore, which is not shown either in the comments |
| 52 | // nor in the redirect specs. |
| 53 | |
| 54 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 55 | #include "pub_tool_basics.h" |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 56 | #include "pub_tool_redir.h" |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 57 | #include "valgrind.h" |
| 58 | #include "helgrind.h" |
bart | 870f745 | 2009-12-29 16:56:18 +0000 | [diff] [blame] | 59 | #include "config.h" |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 60 | |
| 61 | #define TRACE_PTH_FNS 0 |
| 62 | #define TRACE_QT4_FNS 0 |
| 63 | |
| 64 | |
| 65 | /*----------------------------------------------------------------*/ |
| 66 | /*--- ---*/ |
| 67 | /*----------------------------------------------------------------*/ |
| 68 | |
| 69 | #define PTH_FUNC(ret_ty, f, args...) \ |
njn | 5f5ef2a | 2009-05-11 08:01:09 +0000 | [diff] [blame] | 70 | ret_ty I_WRAP_SONAME_FNNAME_ZZ(VG_Z_LIBPTHREAD_SONAME,f)(args); \ |
| 71 | ret_ty I_WRAP_SONAME_FNNAME_ZZ(VG_Z_LIBPTHREAD_SONAME,f)(args) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 72 | |
sewardj | 406bac8 | 2010-03-03 23:03:40 +0000 | [diff] [blame] | 73 | // Do a client request. These are macros rather than a functions so |
| 74 | // as to avoid having an extra frame in stack traces. |
| 75 | |
| 76 | // NB: these duplicate definitions in helgrind.h. But here, we |
| 77 | // can have better typing (Word etc) and assertions, whereas |
| 78 | // in helgrind.h we can't. Obviously it's important the two |
| 79 | // sets of definitions are kept in sync. |
| 80 | |
| 81 | // nuke the previous definitions |
| 82 | #undef DO_CREQ_v_W |
| 83 | #undef DO_CREQ_v_WW |
| 84 | #undef DO_CREQ_W_WW |
| 85 | #undef DO_CREQ_v_WWW |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 86 | |
| 87 | #define DO_CREQ_v_W(_creqF, _ty1F,_arg1F) \ |
| 88 | do { \ |
sewardj | c7ffc94 | 2011-03-28 16:26:42 +0000 | [diff] [blame] | 89 | Word _arg1; \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 90 | assert(sizeof(_ty1F) == sizeof(Word)); \ |
| 91 | _arg1 = (Word)(_arg1F); \ |
sewardj | 4b3a742 | 2011-10-24 13:21:57 +0000 | [diff] [blame^] | 92 | VALGRIND_DO_CLIENT_REQUEST_STMT((_creqF), \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 93 | _arg1, 0,0,0,0); \ |
| 94 | } while (0) |
| 95 | |
| 96 | #define DO_CREQ_v_WW(_creqF, _ty1F,_arg1F, _ty2F,_arg2F) \ |
| 97 | do { \ |
sewardj | c7ffc94 | 2011-03-28 16:26:42 +0000 | [diff] [blame] | 98 | Word _arg1, _arg2; \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 99 | assert(sizeof(_ty1F) == sizeof(Word)); \ |
| 100 | assert(sizeof(_ty2F) == sizeof(Word)); \ |
| 101 | _arg1 = (Word)(_arg1F); \ |
| 102 | _arg2 = (Word)(_arg2F); \ |
sewardj | 4b3a742 | 2011-10-24 13:21:57 +0000 | [diff] [blame^] | 103 | VALGRIND_DO_CLIENT_REQUEST_STMT((_creqF), \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 104 | _arg1,_arg2,0,0,0); \ |
| 105 | } while (0) |
| 106 | |
sewardj | c7ffc94 | 2011-03-28 16:26:42 +0000 | [diff] [blame] | 107 | #define DO_CREQ_W_WW(_resF, _creqF, _ty1F,_arg1F, \ |
| 108 | _ty2F,_arg2F) \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 109 | do { \ |
| 110 | Word _res, _arg1, _arg2; \ |
| 111 | assert(sizeof(_ty1F) == sizeof(Word)); \ |
| 112 | assert(sizeof(_ty2F) == sizeof(Word)); \ |
| 113 | _arg1 = (Word)(_arg1F); \ |
| 114 | _arg2 = (Word)(_arg2F); \ |
bart | 575ce8e | 2011-05-15 07:04:03 +0000 | [diff] [blame] | 115 | _res = VALGRIND_DO_CLIENT_REQUEST_EXPR(2, \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 116 | (_creqF), \ |
| 117 | _arg1,_arg2,0,0,0); \ |
| 118 | _resF = _res; \ |
| 119 | } while (0) |
| 120 | |
| 121 | #define DO_CREQ_v_WWW(_creqF, _ty1F,_arg1F, \ |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 122 | _ty2F,_arg2F, _ty3F, _arg3F) \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 123 | do { \ |
sewardj | c7ffc94 | 2011-03-28 16:26:42 +0000 | [diff] [blame] | 124 | Word _arg1, _arg2, _arg3; \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 125 | assert(sizeof(_ty1F) == sizeof(Word)); \ |
| 126 | assert(sizeof(_ty2F) == sizeof(Word)); \ |
| 127 | assert(sizeof(_ty3F) == sizeof(Word)); \ |
| 128 | _arg1 = (Word)(_arg1F); \ |
| 129 | _arg2 = (Word)(_arg2F); \ |
| 130 | _arg3 = (Word)(_arg3F); \ |
sewardj | 4b3a742 | 2011-10-24 13:21:57 +0000 | [diff] [blame^] | 131 | VALGRIND_DO_CLIENT_REQUEST_STMT((_creqF), \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 132 | _arg1,_arg2,_arg3,0,0); \ |
| 133 | } while (0) |
| 134 | |
| 135 | |
| 136 | #define DO_PthAPIerror(_fnnameF, _errF) \ |
| 137 | do { \ |
| 138 | char* _fnname = (char*)(_fnnameF); \ |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 139 | long _err = (long)(int)(_errF); \ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 140 | char* _errstr = lame_strerror(_err); \ |
| 141 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTH_API_ERROR, \ |
| 142 | char*,_fnname, \ |
| 143 | long,_err, char*,_errstr); \ |
| 144 | } while (0) |
| 145 | |
| 146 | |
| 147 | /* Needed for older glibcs (2.3 and older, at least) who don't |
| 148 | otherwise "know" about pthread_rwlock_anything or about |
| 149 | PTHREAD_MUTEX_RECURSIVE (amongst things). */ |
| 150 | #define _GNU_SOURCE 1 |
| 151 | |
| 152 | #include <stdio.h> |
| 153 | #include <assert.h> |
| 154 | #include <errno.h> |
| 155 | #include <pthread.h> |
| 156 | |
| 157 | |
| 158 | /* A lame version of strerror which doesn't use the real libc |
| 159 | strerror_r, since using the latter just generates endless more |
| 160 | threading errors (glibc goes off and does tons of crap w.r.t. |
| 161 | locales etc) */ |
| 162 | static char* lame_strerror ( long err ) |
| 163 | { switch (err) { |
| 164 | case EPERM: return "EPERM: Operation not permitted"; |
| 165 | case ENOENT: return "ENOENT: No such file or directory"; |
| 166 | case ESRCH: return "ESRCH: No such process"; |
| 167 | case EINTR: return "EINTR: Interrupted system call"; |
| 168 | case EBADF: return "EBADF: Bad file number"; |
| 169 | case EAGAIN: return "EAGAIN: Try again"; |
| 170 | case ENOMEM: return "ENOMEM: Out of memory"; |
| 171 | case EACCES: return "EACCES: Permission denied"; |
| 172 | case EFAULT: return "EFAULT: Bad address"; |
| 173 | case EEXIST: return "EEXIST: File exists"; |
| 174 | case EINVAL: return "EINVAL: Invalid argument"; |
| 175 | case EMFILE: return "EMFILE: Too many open files"; |
| 176 | case ENOSYS: return "ENOSYS: Function not implemented"; |
| 177 | case EOVERFLOW: return "EOVERFLOW: Value too large " |
| 178 | "for defined data type"; |
| 179 | case EBUSY: return "EBUSY: Device or resource busy"; |
| 180 | case ETIMEDOUT: return "ETIMEDOUT: Connection timed out"; |
| 181 | case EDEADLK: return "EDEADLK: Resource deadlock would occur"; |
| 182 | case EOPNOTSUPP: return "EOPNOTSUPP: Operation not supported on " |
| 183 | "transport endpoint"; /* honest, guv */ |
| 184 | default: return "tc_intercepts.c: lame_strerror(): " |
| 185 | "unhandled case -- please fix me!"; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | |
| 190 | /*----------------------------------------------------------------*/ |
| 191 | /*--- pthread_create, pthread_join, pthread_exit ---*/ |
| 192 | /*----------------------------------------------------------------*/ |
| 193 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 194 | static void* mythread_wrapper ( void* xargsV ) |
| 195 | { |
bart | 31277bf | 2008-07-29 17:04:31 +0000 | [diff] [blame] | 196 | volatile Word* xargs = (volatile Word*) xargsV; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 197 | void*(*fn)(void*) = (void*(*)(void*))xargs[0]; |
| 198 | void* arg = (void*)xargs[1]; |
| 199 | pthread_t me = pthread_self(); |
| 200 | /* Tell the tool what my pthread_t is. */ |
| 201 | DO_CREQ_v_W(_VG_USERREQ__HG_SET_MY_PTHREAD_T, pthread_t,me); |
| 202 | /* allow the parent to proceed. We can't let it proceed until |
| 203 | we're ready because (1) we need to make sure it doesn't exit and |
| 204 | hence deallocate xargs[] while we still need it, and (2) we |
| 205 | don't want either parent nor child to proceed until the tool has |
sewardj | f38a74e | 2010-04-12 19:53:05 +0000 | [diff] [blame] | 206 | been notified of the child's pthread_t. |
| 207 | |
| 208 | Note that parent and child access args[] without a lock, |
| 209 | effectively using args[2] as a spinlock in order to get the |
| 210 | parent to wait until the child passes this point. The parent |
| 211 | disables checking on xargs[] before creating the child and |
| 212 | re-enables it once the child goes past this point, so the user |
| 213 | never sees the race. The previous approach (suppressing the |
| 214 | resulting error) was flawed, because it could leave shadow |
| 215 | memory for args[] in a state in which subsequent use of it by |
| 216 | the parent would report further races. */ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 217 | xargs[2] = 0; |
| 218 | /* Now we can no longer safely use xargs[]. */ |
| 219 | return (void*) fn( (void*)arg ); |
| 220 | } |
| 221 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 222 | //----------------------------------------------------------- |
| 223 | // glibc: pthread_create@GLIBC_2.0 |
| 224 | // glibc: pthread_create@@GLIBC_2.1 |
| 225 | // glibc: pthread_create@@GLIBC_2.2.5 |
| 226 | // darwin: pthread_create |
| 227 | // darwin: pthread_create_suspended_np (trapped) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 228 | // |
sewardj | 28a7f7d | 2009-07-26 20:15:37 +0000 | [diff] [blame] | 229 | /* ensure this has its own frame, so as to make it more distinguishable |
| 230 | in suppressions */ |
| 231 | __attribute__((noinline)) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 232 | static int pthread_create_WRK(pthread_t *thread, const pthread_attr_t *attr, |
| 233 | void *(*start) (void *), void *arg) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 234 | { |
| 235 | int ret; |
| 236 | OrigFn fn; |
| 237 | volatile Word xargs[3]; |
| 238 | |
| 239 | VALGRIND_GET_ORIG_FN(fn); |
| 240 | if (TRACE_PTH_FNS) { |
| 241 | fprintf(stderr, "<< pthread_create wrapper"); fflush(stderr); |
| 242 | } |
| 243 | xargs[0] = (Word)start; |
| 244 | xargs[1] = (Word)arg; |
| 245 | xargs[2] = 1; /* serves as a spinlock -- sigh */ |
sewardj | f38a74e | 2010-04-12 19:53:05 +0000 | [diff] [blame] | 246 | /* Disable checking on the spinlock and the two words used to |
| 247 | convey args to the child. Basically we need to make it appear |
| 248 | as if the child never accessed this area, since merely |
| 249 | suppressing the resulting races does not address the issue that |
| 250 | that piece of the parent's stack winds up in the "wrong" state |
| 251 | and therefore may give rise to mysterious races when the parent |
| 252 | comes to re-use this piece of stack in some other frame. */ |
| 253 | VALGRIND_HG_DISABLE_CHECKING(&xargs, sizeof(xargs)); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 254 | |
| 255 | CALL_FN_W_WWWW(ret, fn, thread,attr,mythread_wrapper,&xargs[0]); |
| 256 | |
| 257 | if (ret == 0) { |
| 258 | /* we have to wait for the child to notify the tool of its |
| 259 | pthread_t before continuing */ |
| 260 | while (xargs[2] != 0) { |
sewardj | eafad3b | 2007-11-18 01:16:52 +0000 | [diff] [blame] | 261 | /* Do nothing. We need to spin until the child writes to |
| 262 | xargs[2]. However, that can lead to starvation in the |
| 263 | child and very long delays (eg, tc19_shadowmem on |
| 264 | ppc64-linux Fedora Core 6). So yield the cpu if we can, |
| 265 | to let the child run at the earliest available |
| 266 | opportunity. */ |
| 267 | sched_yield(); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 268 | } |
| 269 | } else { |
| 270 | DO_PthAPIerror( "pthread_create", ret ); |
| 271 | } |
| 272 | |
sewardj | f38a74e | 2010-04-12 19:53:05 +0000 | [diff] [blame] | 273 | /* Reenable checking on the area previously used to communicate |
| 274 | with the child. */ |
| 275 | VALGRIND_HG_ENABLE_CHECKING(&xargs, sizeof(xargs)); |
| 276 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 277 | if (TRACE_PTH_FNS) { |
| 278 | fprintf(stderr, " :: pth_create -> %d >>\n", ret); |
| 279 | } |
| 280 | return ret; |
| 281 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 282 | #if defined(VGO_linux) |
| 283 | PTH_FUNC(int, pthreadZucreateZAZa, // pthread_create@* |
| 284 | pthread_t *thread, const pthread_attr_t *attr, |
| 285 | void *(*start) (void *), void *arg) { |
| 286 | return pthread_create_WRK(thread, attr, start, arg); |
| 287 | } |
| 288 | #elif defined(VGO_darwin) |
| 289 | PTH_FUNC(int, pthreadZucreate, // pthread_create |
| 290 | pthread_t *thread, const pthread_attr_t *attr, |
| 291 | void *(*start) (void *), void *arg) { |
| 292 | return pthread_create_WRK(thread, attr, start, arg); |
| 293 | } |
| 294 | PTH_FUNC(int, pthreadZucreateZuZa, // pthread_create_* |
| 295 | pthread_t *thread, const pthread_attr_t *attr, |
| 296 | void *(*start) (void *), void *arg) { |
| 297 | // trap anything else |
| 298 | assert(0); |
| 299 | } |
| 300 | #else |
| 301 | # error "Unsupported OS" |
| 302 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 303 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 304 | |
| 305 | //----------------------------------------------------------- |
| 306 | // glibc: pthread_join |
| 307 | // darwin: pthread_join |
| 308 | // darwin: pthread_join$NOCANCEL$UNIX2003 |
| 309 | // darwin pthread_join$UNIX2003 |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 310 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 311 | static int pthread_join_WRK(pthread_t thread, void** value_pointer) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 312 | { |
| 313 | int ret; |
| 314 | OrigFn fn; |
| 315 | VALGRIND_GET_ORIG_FN(fn); |
| 316 | if (TRACE_PTH_FNS) { |
| 317 | fprintf(stderr, "<< pthread_join wrapper"); fflush(stderr); |
| 318 | } |
| 319 | |
| 320 | CALL_FN_W_WW(ret, fn, thread,value_pointer); |
| 321 | |
| 322 | /* At least with NPTL as the thread library, this is safe because |
| 323 | it is guaranteed (by NPTL) that the joiner will completely gone |
| 324 | before pthread_join (the original) returns. See email below.*/ |
| 325 | if (ret == 0 /*success*/) { |
| 326 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_JOIN_POST, pthread_t,thread); |
| 327 | } else { |
| 328 | DO_PthAPIerror( "pthread_join", ret ); |
| 329 | } |
| 330 | |
| 331 | if (TRACE_PTH_FNS) { |
| 332 | fprintf(stderr, " :: pth_join -> %d >>\n", ret); |
| 333 | } |
| 334 | return ret; |
| 335 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 336 | #if defined(VGO_linux) |
| 337 | PTH_FUNC(int, pthreadZujoin, // pthread_join |
| 338 | pthread_t thread, void** value_pointer) { |
| 339 | return pthread_join_WRK(thread, value_pointer); |
| 340 | } |
| 341 | #elif defined(VGO_darwin) |
| 342 | PTH_FUNC(int, pthreadZujoinZa, // pthread_join* |
| 343 | pthread_t thread, void** value_pointer) { |
| 344 | return pthread_join_WRK(thread, value_pointer); |
| 345 | } |
| 346 | #else |
| 347 | # error "Unsupported OS" |
| 348 | #endif |
| 349 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 350 | |
| 351 | /* Behaviour of pthread_join on NPTL: |
| 352 | |
| 353 | Me: |
| 354 | I have a question re the NPTL pthread_join implementation. |
| 355 | |
| 356 | Suppose I am the thread 'stayer'. |
| 357 | |
| 358 | If I call pthread_join(quitter), is it guaranteed that the |
| 359 | thread 'quitter' has really exited before pthread_join returns? |
| 360 | |
| 361 | IOW, is it guaranteed that 'quitter' will not execute any further |
| 362 | instructions after pthread_join returns? |
| 363 | |
| 364 | I believe this is true based on the following analysis of |
| 365 | glibc-2.5 sources. However am not 100% sure and would appreciate |
| 366 | confirmation. |
| 367 | |
| 368 | 'quitter' will be running start_thread() in nptl/pthread_create.c |
| 369 | |
| 370 | The last action of start_thread() is to exit via |
| 371 | __exit_thread_inline(0), which simply does sys_exit |
| 372 | (nptl/pthread_create.c:403) |
| 373 | |
| 374 | 'stayer' meanwhile is waiting for lll_wait_tid (pd->tid) |
| 375 | (call at nptl/pthread_join.c:89) |
| 376 | |
| 377 | As per comment at nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h:536, |
| 378 | lll_wait_tid will not return until kernel notifies via futex |
| 379 | wakeup that 'quitter' has terminated. |
| 380 | |
| 381 | Hence pthread_join cannot return until 'quitter' really has |
| 382 | completely disappeared. |
| 383 | |
| 384 | Drepper: |
| 385 | > As per comment at nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h:536, |
| 386 | > lll_wait_tid will not return until kernel notifies via futex |
| 387 | > wakeup that 'quitter' has terminated. |
| 388 | That's the key. The kernel resets the TID field after the thread is |
| 389 | done. No way the joiner can return before the thread is gone. |
| 390 | */ |
| 391 | |
| 392 | |
| 393 | /*----------------------------------------------------------------*/ |
| 394 | /*--- pthread_mutex_t functions ---*/ |
| 395 | /*----------------------------------------------------------------*/ |
| 396 | |
| 397 | /* Handled: pthread_mutex_init pthread_mutex_destroy |
| 398 | pthread_mutex_lock |
| 399 | pthread_mutex_trylock pthread_mutex_timedlock |
| 400 | pthread_mutex_unlock |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 401 | */ |
| 402 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 403 | //----------------------------------------------------------- |
| 404 | // glibc: pthread_mutex_init |
| 405 | // darwin: pthread_mutex_init |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 406 | PTH_FUNC(int, pthreadZumutexZuinit, // pthread_mutex_init |
| 407 | pthread_mutex_t *mutex, |
| 408 | pthread_mutexattr_t* attr) |
| 409 | { |
| 410 | int ret; |
| 411 | long mbRec; |
| 412 | OrigFn fn; |
| 413 | VALGRIND_GET_ORIG_FN(fn); |
| 414 | if (TRACE_PTH_FNS) { |
| 415 | fprintf(stderr, "<< pthread_mxinit %p", mutex); fflush(stderr); |
| 416 | } |
| 417 | |
| 418 | mbRec = 0; |
| 419 | if (attr) { |
| 420 | int ty, zzz; |
| 421 | zzz = pthread_mutexattr_gettype(attr, &ty); |
| 422 | if (zzz == 0 && ty == PTHREAD_MUTEX_RECURSIVE) |
| 423 | mbRec = 1; |
| 424 | } |
| 425 | |
| 426 | CALL_FN_W_WW(ret, fn, mutex,attr); |
| 427 | |
| 428 | if (ret == 0 /*success*/) { |
| 429 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_INIT_POST, |
| 430 | pthread_mutex_t*,mutex, long,mbRec); |
| 431 | } else { |
| 432 | DO_PthAPIerror( "pthread_mutex_init", ret ); |
| 433 | } |
| 434 | |
| 435 | if (TRACE_PTH_FNS) { |
| 436 | fprintf(stderr, " :: mxinit -> %d >>\n", ret); |
| 437 | } |
| 438 | return ret; |
| 439 | } |
| 440 | |
| 441 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 442 | //----------------------------------------------------------- |
| 443 | // glibc: pthread_mutex_destroy |
| 444 | // darwin: pthread_mutex_destroy |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 445 | PTH_FUNC(int, pthreadZumutexZudestroy, // pthread_mutex_destroy |
| 446 | pthread_mutex_t *mutex) |
| 447 | { |
| 448 | int ret; |
| 449 | OrigFn fn; |
| 450 | VALGRIND_GET_ORIG_FN(fn); |
| 451 | if (TRACE_PTH_FNS) { |
| 452 | fprintf(stderr, "<< pthread_mxdestroy %p", mutex); fflush(stderr); |
| 453 | } |
| 454 | |
| 455 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_DESTROY_PRE, |
| 456 | pthread_mutex_t*,mutex); |
| 457 | |
| 458 | CALL_FN_W_W(ret, fn, mutex); |
| 459 | |
| 460 | if (ret != 0) { |
| 461 | DO_PthAPIerror( "pthread_mutex_destroy", ret ); |
| 462 | } |
| 463 | |
| 464 | if (TRACE_PTH_FNS) { |
| 465 | fprintf(stderr, " :: mxdestroy -> %d >>\n", ret); |
| 466 | } |
| 467 | return ret; |
| 468 | } |
| 469 | |
| 470 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 471 | //----------------------------------------------------------- |
| 472 | // glibc: pthread_mutex_lock |
| 473 | // darwin: pthread_mutex_lock |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 474 | PTH_FUNC(int, pthreadZumutexZulock, // pthread_mutex_lock |
| 475 | pthread_mutex_t *mutex) |
| 476 | { |
| 477 | int ret; |
| 478 | OrigFn fn; |
| 479 | VALGRIND_GET_ORIG_FN(fn); |
| 480 | if (TRACE_PTH_FNS) { |
| 481 | fprintf(stderr, "<< pthread_mxlock %p", mutex); fflush(stderr); |
| 482 | } |
| 483 | |
| 484 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 485 | pthread_mutex_t*,mutex, long,0/*!isTryLock*/); |
| 486 | |
| 487 | CALL_FN_W_W(ret, fn, mutex); |
| 488 | |
| 489 | /* There's a hole here: libpthread now knows the lock is locked, |
| 490 | but the tool doesn't, so some other thread could run and detect |
| 491 | that the lock has been acquired by someone (this thread). Does |
| 492 | this matter? Not sure, but I don't think so. */ |
| 493 | |
| 494 | if (ret == 0 /*success*/) { |
| 495 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 496 | pthread_mutex_t*,mutex); |
| 497 | } else { |
| 498 | DO_PthAPIerror( "pthread_mutex_lock", ret ); |
| 499 | } |
| 500 | |
| 501 | if (TRACE_PTH_FNS) { |
| 502 | fprintf(stderr, " :: mxlock -> %d >>\n", ret); |
| 503 | } |
| 504 | return ret; |
| 505 | } |
| 506 | |
| 507 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 508 | //----------------------------------------------------------- |
| 509 | // glibc: pthread_mutex_trylock |
| 510 | // darwin: pthread_mutex_trylock |
| 511 | // |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 512 | // pthread_mutex_trylock. The handling needed here is very similar |
| 513 | // to that for pthread_mutex_lock, except that we need to tell |
| 514 | // the pre-lock creq that this is a trylock-style operation, and |
| 515 | // therefore not to complain if the lock is nonrecursive and |
| 516 | // already locked by this thread -- because then it'll just fail |
| 517 | // immediately with EBUSY. |
| 518 | PTH_FUNC(int, pthreadZumutexZutrylock, // pthread_mutex_trylock |
| 519 | pthread_mutex_t *mutex) |
| 520 | { |
| 521 | int ret; |
| 522 | OrigFn fn; |
| 523 | VALGRIND_GET_ORIG_FN(fn); |
| 524 | if (TRACE_PTH_FNS) { |
| 525 | fprintf(stderr, "<< pthread_mxtrylock %p", mutex); fflush(stderr); |
| 526 | } |
| 527 | |
| 528 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 529 | pthread_mutex_t*,mutex, long,1/*isTryLock*/); |
| 530 | |
| 531 | CALL_FN_W_W(ret, fn, mutex); |
| 532 | |
| 533 | /* There's a hole here: libpthread now knows the lock is locked, |
| 534 | but the tool doesn't, so some other thread could run and detect |
| 535 | that the lock has been acquired by someone (this thread). Does |
| 536 | this matter? Not sure, but I don't think so. */ |
| 537 | |
| 538 | if (ret == 0 /*success*/) { |
| 539 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 540 | pthread_mutex_t*,mutex); |
| 541 | } else { |
| 542 | if (ret != EBUSY) |
| 543 | DO_PthAPIerror( "pthread_mutex_trylock", ret ); |
| 544 | } |
| 545 | |
| 546 | if (TRACE_PTH_FNS) { |
| 547 | fprintf(stderr, " :: mxtrylock -> %d >>\n", ret); |
| 548 | } |
| 549 | return ret; |
| 550 | } |
| 551 | |
| 552 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 553 | //----------------------------------------------------------- |
| 554 | // glibc: pthread_mutex_timedlock |
| 555 | // darwin: (doesn't appear to exist) |
| 556 | // |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 557 | // pthread_mutex_timedlock. Identical logic to pthread_mutex_trylock. |
| 558 | PTH_FUNC(int, pthreadZumutexZutimedlock, // pthread_mutex_timedlock |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 559 | pthread_mutex_t *mutex, |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 560 | void* timeout) |
| 561 | { |
| 562 | int ret; |
| 563 | OrigFn fn; |
| 564 | VALGRIND_GET_ORIG_FN(fn); |
| 565 | if (TRACE_PTH_FNS) { |
| 566 | fprintf(stderr, "<< pthread_mxtimedlock %p %p", mutex, timeout); |
| 567 | fflush(stderr); |
| 568 | } |
| 569 | |
| 570 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 571 | pthread_mutex_t*,mutex, long,1/*isTryLock-ish*/); |
| 572 | |
| 573 | CALL_FN_W_WW(ret, fn, mutex,timeout); |
| 574 | |
| 575 | /* There's a hole here: libpthread now knows the lock is locked, |
| 576 | but the tool doesn't, so some other thread could run and detect |
| 577 | that the lock has been acquired by someone (this thread). Does |
| 578 | this matter? Not sure, but I don't think so. */ |
| 579 | |
| 580 | if (ret == 0 /*success*/) { |
| 581 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 582 | pthread_mutex_t*,mutex); |
| 583 | } else { |
| 584 | if (ret != ETIMEDOUT) |
| 585 | DO_PthAPIerror( "pthread_mutex_timedlock", ret ); |
| 586 | } |
| 587 | |
| 588 | if (TRACE_PTH_FNS) { |
| 589 | fprintf(stderr, " :: mxtimedlock -> %d >>\n", ret); |
| 590 | } |
| 591 | return ret; |
| 592 | } |
| 593 | |
| 594 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 595 | //----------------------------------------------------------- |
| 596 | // glibc: pthread_mutex_unlock |
| 597 | // darwin: pthread_mutex_unlock |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 598 | PTH_FUNC(int, pthreadZumutexZuunlock, // pthread_mutex_unlock |
| 599 | pthread_mutex_t *mutex) |
| 600 | { |
| 601 | int ret; |
| 602 | OrigFn fn; |
| 603 | VALGRIND_GET_ORIG_FN(fn); |
| 604 | |
| 605 | if (TRACE_PTH_FNS) { |
| 606 | fprintf(stderr, "<< pthread_mxunlk %p", mutex); fflush(stderr); |
| 607 | } |
| 608 | |
| 609 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_PRE, |
| 610 | pthread_mutex_t*,mutex); |
| 611 | |
| 612 | CALL_FN_W_W(ret, fn, mutex); |
| 613 | |
| 614 | if (ret == 0 /*success*/) { |
| 615 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_POST, |
| 616 | pthread_mutex_t*,mutex); |
| 617 | } else { |
| 618 | DO_PthAPIerror( "pthread_mutex_unlock", ret ); |
| 619 | } |
| 620 | |
| 621 | if (TRACE_PTH_FNS) { |
| 622 | fprintf(stderr, " mxunlk -> %d >>\n", ret); |
| 623 | } |
| 624 | return ret; |
| 625 | } |
| 626 | |
| 627 | |
| 628 | /*----------------------------------------------------------------*/ |
| 629 | /*--- pthread_cond_t functions ---*/ |
| 630 | /*----------------------------------------------------------------*/ |
| 631 | |
| 632 | /* Handled: pthread_cond_wait pthread_cond_timedwait |
| 633 | pthread_cond_signal pthread_cond_broadcast |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 634 | pthread_cond_destroy |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 635 | |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 636 | Unhandled: pthread_cond_init |
| 637 | -- is this important? |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 638 | */ |
| 639 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 640 | //----------------------------------------------------------- |
| 641 | // glibc: pthread_cond_wait@GLIBC_2.2.5 |
| 642 | // glibc: pthread_cond_wait@@GLIBC_2.3.2 |
| 643 | // darwin: pthread_cond_wait |
| 644 | // darwin: pthread_cond_wait$NOCANCEL$UNIX2003 |
| 645 | // darwin: pthread_cond_wait$UNIX2003 |
| 646 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 647 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 648 | static int pthread_cond_wait_WRK(pthread_cond_t* cond, |
| 649 | pthread_mutex_t* mutex) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 650 | { |
| 651 | int ret; |
| 652 | OrigFn fn; |
| 653 | unsigned long mutex_is_valid; |
| 654 | |
| 655 | VALGRIND_GET_ORIG_FN(fn); |
| 656 | |
| 657 | if (TRACE_PTH_FNS) { |
| 658 | fprintf(stderr, "<< pthread_cond_wait %p %p", cond, mutex); |
| 659 | fflush(stderr); |
| 660 | } |
| 661 | |
| 662 | /* Tell the tool a cond-wait is about to happen, so it can check |
| 663 | for bogus argument values. In return it tells us whether it |
| 664 | thinks the mutex is valid or not. */ |
| 665 | DO_CREQ_W_WW(mutex_is_valid, |
| 666 | _VG_USERREQ__HG_PTHREAD_COND_WAIT_PRE, |
| 667 | pthread_cond_t*,cond, pthread_mutex_t*,mutex); |
| 668 | assert(mutex_is_valid == 1 || mutex_is_valid == 0); |
| 669 | |
| 670 | /* Tell the tool we're about to drop the mutex. This reflects the |
| 671 | fact that in a cond_wait, we show up holding the mutex, and the |
| 672 | call atomically drops the mutex and waits for the cv to be |
| 673 | signalled. */ |
| 674 | if (mutex_is_valid) { |
| 675 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_PRE, |
| 676 | pthread_mutex_t*,mutex); |
| 677 | } |
| 678 | |
| 679 | CALL_FN_W_WW(ret, fn, cond,mutex); |
| 680 | |
| 681 | /* these conditionals look stupid, but compare w/ same logic for |
| 682 | pthread_cond_timedwait below */ |
| 683 | if (ret == 0 && mutex_is_valid) { |
| 684 | /* and now we have the mutex again */ |
| 685 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 686 | pthread_mutex_t*,mutex); |
| 687 | } |
| 688 | |
| 689 | if (ret == 0 && mutex_is_valid) { |
| 690 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_COND_WAIT_POST, |
| 691 | pthread_cond_t*,cond, pthread_mutex_t*,mutex); |
| 692 | } |
| 693 | |
| 694 | if (ret != 0) { |
| 695 | DO_PthAPIerror( "pthread_cond_wait", ret ); |
| 696 | } |
| 697 | |
| 698 | if (TRACE_PTH_FNS) { |
| 699 | fprintf(stderr, " cowait -> %d >>\n", ret); |
| 700 | } |
| 701 | |
| 702 | return ret; |
| 703 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 704 | #if defined(VGO_linux) |
| 705 | PTH_FUNC(int, pthreadZucondZuwaitZAZa, // pthread_cond_wait@* |
| 706 | pthread_cond_t* cond, pthread_mutex_t* mutex) { |
| 707 | return pthread_cond_wait_WRK(cond, mutex); |
| 708 | } |
| 709 | #elif defined(VGO_darwin) |
| 710 | PTH_FUNC(int, pthreadZucondZuwaitZa, // pthread_cond_wait* |
| 711 | pthread_cond_t* cond, pthread_mutex_t* mutex) { |
| 712 | return pthread_cond_wait_WRK(cond, mutex); |
| 713 | } |
| 714 | #else |
| 715 | # error "Unsupported OS" |
| 716 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 717 | |
| 718 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 719 | //----------------------------------------------------------- |
| 720 | // glibc: pthread_cond_timedwait@@GLIBC_2.3.2 |
| 721 | // glibc: pthread_cond_timedwait@GLIBC_2.2.5 |
| 722 | // glibc: pthread_cond_timedwait@GLIBC_2.0 |
| 723 | // darwin: pthread_cond_timedwait |
| 724 | // darwin: pthread_cond_timedwait$NOCANCEL$UNIX2003 |
| 725 | // darwin: pthread_cond_timedwait$UNIX2003 |
| 726 | // darwin: pthread_cond_timedwait_relative_np (trapped) |
| 727 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 728 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 729 | static int pthread_cond_timedwait_WRK(pthread_cond_t* cond, |
| 730 | pthread_mutex_t* mutex, |
| 731 | struct timespec* abstime) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 732 | { |
| 733 | int ret; |
| 734 | OrigFn fn; |
| 735 | unsigned long mutex_is_valid; |
sewardj | 6aeadaa | 2011-10-19 05:41:34 +0000 | [diff] [blame] | 736 | Bool abstime_is_valid; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 737 | VALGRIND_GET_ORIG_FN(fn); |
| 738 | |
| 739 | if (TRACE_PTH_FNS) { |
| 740 | fprintf(stderr, "<< pthread_cond_timedwait %p %p %p", |
| 741 | cond, mutex, abstime); |
| 742 | fflush(stderr); |
| 743 | } |
| 744 | |
| 745 | /* Tell the tool a cond-wait is about to happen, so it can check |
| 746 | for bogus argument values. In return it tells us whether it |
| 747 | thinks the mutex is valid or not. */ |
| 748 | DO_CREQ_W_WW(mutex_is_valid, |
| 749 | _VG_USERREQ__HG_PTHREAD_COND_WAIT_PRE, |
| 750 | pthread_cond_t*,cond, pthread_mutex_t*,mutex); |
| 751 | assert(mutex_is_valid == 1 || mutex_is_valid == 0); |
| 752 | |
sewardj | 6aeadaa | 2011-10-19 05:41:34 +0000 | [diff] [blame] | 753 | abstime_is_valid = abstime->tv_nsec >= 0 && abstime->tv_nsec < 1000000000; |
| 754 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 755 | /* Tell the tool we're about to drop the mutex. This reflects the |
| 756 | fact that in a cond_wait, we show up holding the mutex, and the |
| 757 | call atomically drops the mutex and waits for the cv to be |
| 758 | signalled. */ |
sewardj | 6aeadaa | 2011-10-19 05:41:34 +0000 | [diff] [blame] | 759 | if (mutex_is_valid && abstime_is_valid) { |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 760 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_PRE, |
| 761 | pthread_mutex_t*,mutex); |
| 762 | } |
| 763 | |
| 764 | CALL_FN_W_WWW(ret, fn, cond,mutex,abstime); |
| 765 | |
sewardj | 6aeadaa | 2011-10-19 05:41:34 +0000 | [diff] [blame] | 766 | if (!abstime_is_valid && ret != EINVAL) { |
| 767 | DO_PthAPIerror("Bug in libpthread: pthread_cond_timedwait " |
| 768 | "invalid abstime did not cause" |
| 769 | " EINVAL", ret); |
| 770 | } |
| 771 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 772 | if ((ret == 0 || ret == ETIMEDOUT) && mutex_is_valid) { |
| 773 | /* and now we have the mutex again */ |
| 774 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 775 | pthread_mutex_t*,mutex); |
| 776 | } |
| 777 | |
| 778 | if (ret == 0 && mutex_is_valid) { |
| 779 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_COND_WAIT_POST, |
| 780 | pthread_cond_t*,cond, pthread_mutex_t*,mutex); |
| 781 | } |
| 782 | |
| 783 | if (ret != 0 && ret != ETIMEDOUT) { |
| 784 | DO_PthAPIerror( "pthread_cond_timedwait", ret ); |
| 785 | } |
| 786 | |
| 787 | if (TRACE_PTH_FNS) { |
| 788 | fprintf(stderr, " cotimedwait -> %d >>\n", ret); |
| 789 | } |
| 790 | |
| 791 | return ret; |
| 792 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 793 | #if defined(VGO_linux) |
| 794 | PTH_FUNC(int, pthreadZucondZutimedwaitZAZa, // pthread_cond_timedwait@* |
| 795 | pthread_cond_t* cond, pthread_mutex_t* mutex, |
| 796 | struct timespec* abstime) { |
| 797 | return pthread_cond_timedwait_WRK(cond, mutex, abstime); |
| 798 | } |
| 799 | #elif defined(VGO_darwin) |
| 800 | PTH_FUNC(int, pthreadZucondZutimedwait, // pthread_cond_timedwait |
| 801 | pthread_cond_t* cond, pthread_mutex_t* mutex, |
| 802 | struct timespec* abstime) { |
| 803 | return pthread_cond_timedwait_WRK(cond, mutex, abstime); |
| 804 | } |
| 805 | PTH_FUNC(int, pthreadZucondZutimedwaitZDZa, // pthread_cond_timedwait$* |
| 806 | pthread_cond_t* cond, pthread_mutex_t* mutex, |
| 807 | struct timespec* abstime) { |
| 808 | return pthread_cond_timedwait_WRK(cond, mutex, abstime); |
| 809 | } |
| 810 | PTH_FUNC(int, pthreadZucondZutimedwaitZuZa, // pthread_cond_timedwait_* |
| 811 | pthread_cond_t* cond, pthread_mutex_t* mutex, |
| 812 | struct timespec* abstime) { |
| 813 | assert(0); |
| 814 | } |
| 815 | #else |
| 816 | # error "Unsupported OS" |
| 817 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 818 | |
| 819 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 820 | //----------------------------------------------------------- |
| 821 | // glibc: pthread_cond_signal@GLIBC_2.0 |
| 822 | // glibc: pthread_cond_signal@GLIBC_2.2.5 |
| 823 | // glibc: pthread_cond_signal@@GLIBC_2.3.2 |
| 824 | // darwin: pthread_cond_signal |
| 825 | // darwin: pthread_cond_signal_thread_np (don't intercept this) |
| 826 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 827 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 828 | static int pthread_cond_signal_WRK(pthread_cond_t* cond) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 829 | { |
| 830 | int ret; |
| 831 | OrigFn fn; |
| 832 | VALGRIND_GET_ORIG_FN(fn); |
| 833 | |
| 834 | if (TRACE_PTH_FNS) { |
| 835 | fprintf(stderr, "<< pthread_cond_signal %p", cond); |
| 836 | fflush(stderr); |
| 837 | } |
| 838 | |
| 839 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_COND_SIGNAL_PRE, |
| 840 | pthread_cond_t*,cond); |
| 841 | |
| 842 | CALL_FN_W_W(ret, fn, cond); |
| 843 | |
| 844 | if (ret != 0) { |
| 845 | DO_PthAPIerror( "pthread_cond_signal", ret ); |
| 846 | } |
| 847 | |
| 848 | if (TRACE_PTH_FNS) { |
| 849 | fprintf(stderr, " cosig -> %d >>\n", ret); |
| 850 | } |
| 851 | |
| 852 | return ret; |
| 853 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 854 | #if defined(VGO_linux) |
| 855 | PTH_FUNC(int, pthreadZucondZusignalZAZa, // pthread_cond_signal@* |
| 856 | pthread_cond_t* cond) { |
| 857 | return pthread_cond_signal_WRK(cond); |
| 858 | } |
| 859 | #elif defined(VGO_darwin) |
| 860 | PTH_FUNC(int, pthreadZucondZusignal, // pthread_cond_signal |
| 861 | pthread_cond_t* cond) { |
| 862 | return pthread_cond_signal_WRK(cond); |
| 863 | } |
| 864 | #else |
| 865 | # error "Unsupported OS" |
| 866 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 867 | |
| 868 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 869 | //----------------------------------------------------------- |
| 870 | // glibc: pthread_cond_broadcast@GLIBC_2.0 |
| 871 | // glibc: pthread_cond_broadcast@GLIBC_2.2.5 |
| 872 | // glibc: pthread_cond_broadcast@@GLIBC_2.3.2 |
| 873 | // darwin: pthread_cond_broadcast |
| 874 | // |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 875 | // Note, this is pretty much identical, from a dependency-graph |
| 876 | // point of view, with cond_signal, so the code is duplicated. |
| 877 | // Maybe it should be commoned up. |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 878 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 879 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 880 | static int pthread_cond_broadcast_WRK(pthread_cond_t* cond) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 881 | { |
| 882 | int ret; |
| 883 | OrigFn fn; |
| 884 | VALGRIND_GET_ORIG_FN(fn); |
| 885 | |
| 886 | if (TRACE_PTH_FNS) { |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 887 | fprintf(stderr, "<< pthread_cond_broadcast %p", cond); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 888 | fflush(stderr); |
| 889 | } |
| 890 | |
| 891 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_COND_BROADCAST_PRE, |
| 892 | pthread_cond_t*,cond); |
| 893 | |
| 894 | CALL_FN_W_W(ret, fn, cond); |
| 895 | |
| 896 | if (ret != 0) { |
| 897 | DO_PthAPIerror( "pthread_cond_broadcast", ret ); |
| 898 | } |
| 899 | |
| 900 | if (TRACE_PTH_FNS) { |
| 901 | fprintf(stderr, " cobro -> %d >>\n", ret); |
| 902 | } |
| 903 | |
| 904 | return ret; |
| 905 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 906 | #if defined(VGO_linux) |
| 907 | PTH_FUNC(int, pthreadZucondZubroadcastZAZa, // pthread_cond_broadcast@* |
| 908 | pthread_cond_t* cond) { |
| 909 | return pthread_cond_broadcast_WRK(cond); |
| 910 | } |
| 911 | #elif defined(VGO_darwin) |
| 912 | PTH_FUNC(int, pthreadZucondZubroadcast, // pthread_cond_broadcast |
| 913 | pthread_cond_t* cond) { |
| 914 | return pthread_cond_broadcast_WRK(cond); |
| 915 | } |
| 916 | #else |
| 917 | # error "Unsupported OS" |
| 918 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 919 | |
| 920 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 921 | //----------------------------------------------------------- |
| 922 | // glibc: pthread_cond_destroy@@GLIBC_2.3.2 |
| 923 | // glibc: pthread_cond_destroy@GLIBC_2.2.5 |
| 924 | // glibc: pthread_cond_destroy@GLIBC_2.0 |
| 925 | // darwin: pthread_cond_destroy |
| 926 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 927 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 928 | static int pthread_cond_destroy_WRK(pthread_cond_t* cond) |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 929 | { |
| 930 | int ret; |
| 931 | OrigFn fn; |
| 932 | |
| 933 | VALGRIND_GET_ORIG_FN(fn); |
| 934 | |
| 935 | if (TRACE_PTH_FNS) { |
| 936 | fprintf(stderr, "<< pthread_cond_destroy %p", cond); |
| 937 | fflush(stderr); |
| 938 | } |
| 939 | |
| 940 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_COND_DESTROY_PRE, |
| 941 | pthread_cond_t*,cond); |
| 942 | |
| 943 | CALL_FN_W_W(ret, fn, cond); |
| 944 | |
| 945 | if (ret != 0) { |
| 946 | DO_PthAPIerror( "pthread_cond_destroy", ret ); |
| 947 | } |
| 948 | |
| 949 | if (TRACE_PTH_FNS) { |
| 950 | fprintf(stderr, " codestr -> %d >>\n", ret); |
| 951 | } |
| 952 | |
| 953 | return ret; |
| 954 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 955 | #if defined(VGO_linux) |
| 956 | PTH_FUNC(int, pthreadZucondZudestroyZAZa, // pthread_cond_destroy@* |
| 957 | pthread_cond_t* cond) { |
| 958 | return pthread_cond_destroy_WRK(cond); |
| 959 | } |
| 960 | #elif defined(VGO_darwin) |
| 961 | PTH_FUNC(int, pthreadZucondZudestroy, // pthread_cond_destroy |
| 962 | pthread_cond_t* cond) { |
| 963 | return pthread_cond_destroy_WRK(cond); |
| 964 | } |
| 965 | #else |
| 966 | # error "Unsupported OS" |
| 967 | #endif |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 968 | |
| 969 | |
| 970 | /*----------------------------------------------------------------*/ |
| 971 | /*--- pthread_barrier_t functions ---*/ |
| 972 | /*----------------------------------------------------------------*/ |
| 973 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 974 | #if defined(HAVE_PTHREAD_BARRIER_INIT) |
| 975 | |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 976 | /* Handled: pthread_barrier_init |
| 977 | pthread_barrier_wait |
| 978 | pthread_barrier_destroy |
| 979 | |
| 980 | Unhandled: pthread_barrierattr_destroy |
| 981 | pthread_barrierattr_getpshared |
| 982 | pthread_barrierattr_init |
| 983 | pthread_barrierattr_setpshared |
| 984 | -- are these important? |
| 985 | */ |
| 986 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 987 | //----------------------------------------------------------- |
| 988 | // glibc: pthread_barrier_init |
| 989 | // darwin: (doesn't appear to exist) |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 990 | PTH_FUNC(int, pthreadZubarrierZuinit, // pthread_barrier_init |
| 991 | pthread_barrier_t* bar, |
| 992 | pthread_barrierattr_t* attr, unsigned long count) |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 993 | { |
| 994 | int ret; |
| 995 | OrigFn fn; |
| 996 | VALGRIND_GET_ORIG_FN(fn); |
| 997 | |
| 998 | if (TRACE_PTH_FNS) { |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 999 | fprintf(stderr, "<< pthread_barrier_init %p %p %lu", |
| 1000 | bar, attr, count); |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 1001 | fflush(stderr); |
| 1002 | } |
| 1003 | |
sewardj | 406bac8 | 2010-03-03 23:03:40 +0000 | [diff] [blame] | 1004 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_BARRIER_INIT_PRE, |
| 1005 | pthread_barrier_t*, bar, |
| 1006 | unsigned long, count, |
| 1007 | unsigned long, 0/*!resizable*/); |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 1008 | |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 1009 | CALL_FN_W_WWW(ret, fn, bar,attr,count); |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 1010 | |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 1011 | if (ret != 0) { |
| 1012 | DO_PthAPIerror( "pthread_barrier_init", ret ); |
| 1013 | } |
| 1014 | |
| 1015 | if (TRACE_PTH_FNS) { |
| 1016 | fprintf(stderr, " pthread_barrier_init -> %d >>\n", ret); |
| 1017 | } |
| 1018 | |
| 1019 | return ret; |
| 1020 | } |
| 1021 | |
| 1022 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1023 | //----------------------------------------------------------- |
| 1024 | // glibc: pthread_barrier_wait |
| 1025 | // darwin: (doesn't appear to exist) |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 1026 | PTH_FUNC(int, pthreadZubarrierZuwait, // pthread_barrier_wait |
| 1027 | pthread_barrier_t* bar) |
| 1028 | { |
| 1029 | int ret; |
| 1030 | OrigFn fn; |
| 1031 | VALGRIND_GET_ORIG_FN(fn); |
| 1032 | |
| 1033 | if (TRACE_PTH_FNS) { |
| 1034 | fprintf(stderr, "<< pthread_barrier_wait %p", bar); |
| 1035 | fflush(stderr); |
| 1036 | } |
| 1037 | |
| 1038 | /* That this works correctly, and doesn't screw up when a thread |
| 1039 | leaving the barrier races round to the front and re-enters while |
| 1040 | other threads are still leaving it, is quite subtle. See |
| 1041 | comments in the handler for PTHREAD_BARRIER_WAIT_PRE in |
| 1042 | hg_main.c. */ |
| 1043 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_BARRIER_WAIT_PRE, |
| 1044 | pthread_barrier_t*,bar); |
| 1045 | |
| 1046 | CALL_FN_W_W(ret, fn, bar); |
| 1047 | |
| 1048 | if (ret != 0 && ret != PTHREAD_BARRIER_SERIAL_THREAD) { |
| 1049 | DO_PthAPIerror( "pthread_barrier_wait", ret ); |
| 1050 | } |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 1051 | |
| 1052 | if (TRACE_PTH_FNS) { |
| 1053 | fprintf(stderr, " pthread_barrier_wait -> %d >>\n", ret); |
| 1054 | } |
| 1055 | |
| 1056 | return ret; |
| 1057 | } |
| 1058 | |
| 1059 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1060 | //----------------------------------------------------------- |
| 1061 | // glibc: pthread_barrier_destroy |
| 1062 | // darwin: (doesn't appear to exist) |
sewardj | 9f569b7 | 2008-11-13 13:33:09 +0000 | [diff] [blame] | 1063 | PTH_FUNC(int, pthreadZubarrierZudestroy, // pthread_barrier_destroy |
| 1064 | pthread_barrier_t* bar) |
| 1065 | { |
| 1066 | int ret; |
| 1067 | OrigFn fn; |
| 1068 | VALGRIND_GET_ORIG_FN(fn); |
| 1069 | |
| 1070 | if (TRACE_PTH_FNS) { |
| 1071 | fprintf(stderr, "<< pthread_barrier_destroy %p", bar); |
| 1072 | fflush(stderr); |
| 1073 | } |
| 1074 | |
| 1075 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_BARRIER_DESTROY_PRE, |
| 1076 | pthread_barrier_t*,bar); |
| 1077 | |
| 1078 | CALL_FN_W_W(ret, fn, bar); |
| 1079 | |
| 1080 | if (ret != 0) { |
| 1081 | DO_PthAPIerror( "pthread_barrier_destroy", ret ); |
| 1082 | } |
| 1083 | |
| 1084 | if (TRACE_PTH_FNS) { |
| 1085 | fprintf(stderr, " pthread_barrier_destroy -> %d >>\n", ret); |
| 1086 | } |
| 1087 | |
| 1088 | return ret; |
| 1089 | } |
sewardj | f98e1c0 | 2008-10-25 16:22:41 +0000 | [diff] [blame] | 1090 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1091 | #endif // defined(HAVE_PTHREAD_BARRIER_INIT) |
| 1092 | |
sewardj | 5a644da | 2009-08-11 10:35:58 +0000 | [diff] [blame] | 1093 | |
| 1094 | /*----------------------------------------------------------------*/ |
| 1095 | /*--- pthread_spinlock_t functions ---*/ |
| 1096 | /*----------------------------------------------------------------*/ |
| 1097 | |
| 1098 | #if defined(HAVE_PTHREAD_SPIN_LOCK) |
| 1099 | |
| 1100 | /* Handled: pthread_spin_init pthread_spin_destroy |
| 1101 | pthread_spin_lock pthread_spin_trylock |
| 1102 | pthread_spin_unlock |
| 1103 | |
| 1104 | Unhandled: |
| 1105 | */ |
| 1106 | |
| 1107 | /* This is a nasty kludge, in that glibc "knows" that initialising a |
| 1108 | spin lock unlocks it, and pthread_spin_{init,unlock} are names for |
| 1109 | the same function. Hence we have to have a wrapper which does both |
| 1110 | things, without knowing which the user intended to happen. */ |
| 1111 | |
| 1112 | //----------------------------------------------------------- |
| 1113 | // glibc: pthread_spin_init |
| 1114 | // glibc: pthread_spin_unlock |
| 1115 | // darwin: (doesn't appear to exist) |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1116 | __attribute__((noinline)) |
sewardj | 5a644da | 2009-08-11 10:35:58 +0000 | [diff] [blame] | 1117 | static int pthread_spin_init_or_unlock_WRK(pthread_spinlock_t* lock, |
| 1118 | int pshared) { |
| 1119 | int ret; |
| 1120 | OrigFn fn; |
| 1121 | VALGRIND_GET_ORIG_FN(fn); |
| 1122 | if (TRACE_PTH_FNS) { |
| 1123 | fprintf(stderr, "<< pthread_spin_iORu %p", lock); fflush(stderr); |
| 1124 | } |
| 1125 | |
| 1126 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_SPIN_INIT_OR_UNLOCK_PRE, |
| 1127 | pthread_spinlock_t*, lock); |
| 1128 | |
| 1129 | CALL_FN_W_WW(ret, fn, lock,pshared); |
| 1130 | |
| 1131 | if (ret == 0 /*success*/) { |
| 1132 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_SPIN_INIT_OR_UNLOCK_POST, |
| 1133 | pthread_spinlock_t*,lock); |
| 1134 | } else { |
| 1135 | DO_PthAPIerror( "pthread_spinlock_{init,unlock}", ret ); |
| 1136 | } |
| 1137 | |
| 1138 | if (TRACE_PTH_FNS) { |
| 1139 | fprintf(stderr, " :: spiniORu -> %d >>\n", ret); |
| 1140 | } |
| 1141 | return ret; |
| 1142 | } |
| 1143 | #if defined(VGO_linux) |
| 1144 | PTH_FUNC(int, pthreadZuspinZuinit, // pthread_spin_init |
| 1145 | pthread_spinlock_t* lock, int pshared) { |
| 1146 | return pthread_spin_init_or_unlock_WRK(lock, pshared); |
| 1147 | } |
| 1148 | PTH_FUNC(int, pthreadZuspinZuunlock, // pthread_spin_unlock |
| 1149 | pthread_spinlock_t* lock) { |
| 1150 | /* this is never actually called */ |
| 1151 | return pthread_spin_init_or_unlock_WRK(lock, 0/*pshared*/); |
| 1152 | } |
| 1153 | #elif defined(VGO_darwin) |
| 1154 | #else |
| 1155 | # error "Unsupported OS" |
| 1156 | #endif |
| 1157 | |
| 1158 | |
| 1159 | //----------------------------------------------------------- |
| 1160 | // glibc: pthread_spin_destroy |
| 1161 | // darwin: (doesn't appear to exist) |
| 1162 | #if defined(VGO_linux) |
| 1163 | |
| 1164 | PTH_FUNC(int, pthreadZuspinZudestroy, // pthread_spin_destroy |
| 1165 | pthread_spinlock_t* lock) |
| 1166 | { |
| 1167 | int ret; |
| 1168 | OrigFn fn; |
| 1169 | VALGRIND_GET_ORIG_FN(fn); |
| 1170 | if (TRACE_PTH_FNS) { |
| 1171 | fprintf(stderr, "<< pthread_spin_destroy %p", lock); |
| 1172 | fflush(stderr); |
| 1173 | } |
| 1174 | |
| 1175 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_SPIN_DESTROY_PRE, |
| 1176 | pthread_spinlock_t*,lock); |
| 1177 | |
| 1178 | CALL_FN_W_W(ret, fn, lock); |
| 1179 | |
| 1180 | if (ret != 0) { |
| 1181 | DO_PthAPIerror( "pthread_spin_destroy", ret ); |
| 1182 | } |
| 1183 | |
| 1184 | if (TRACE_PTH_FNS) { |
| 1185 | fprintf(stderr, " :: spindestroy -> %d >>\n", ret); |
| 1186 | } |
| 1187 | return ret; |
| 1188 | } |
| 1189 | |
| 1190 | #elif defined(VGO_darwin) |
| 1191 | #else |
| 1192 | # error "Unsupported OS" |
| 1193 | #endif |
| 1194 | |
| 1195 | |
| 1196 | //----------------------------------------------------------- |
| 1197 | // glibc: pthread_spin_lock |
| 1198 | // darwin: (doesn't appear to exist) |
| 1199 | #if defined(VGO_linux) |
| 1200 | |
| 1201 | PTH_FUNC(int, pthreadZuspinZulock, // pthread_spin_lock |
| 1202 | pthread_spinlock_t* lock) |
| 1203 | { |
| 1204 | int ret; |
| 1205 | OrigFn fn; |
| 1206 | VALGRIND_GET_ORIG_FN(fn); |
| 1207 | if (TRACE_PTH_FNS) { |
| 1208 | fprintf(stderr, "<< pthread_spinlock %p", lock); |
| 1209 | fflush(stderr); |
| 1210 | } |
| 1211 | |
| 1212 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_SPIN_LOCK_PRE, |
| 1213 | pthread_spinlock_t*,lock, long,0/*!isTryLock*/); |
| 1214 | |
| 1215 | CALL_FN_W_W(ret, fn, lock); |
| 1216 | |
| 1217 | /* There's a hole here: libpthread now knows the lock is locked, |
| 1218 | but the tool doesn't, so some other thread could run and detect |
| 1219 | that the lock has been acquired by someone (this thread). Does |
| 1220 | this matter? Not sure, but I don't think so. */ |
| 1221 | |
| 1222 | if (ret == 0 /*success*/) { |
| 1223 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_SPIN_LOCK_POST, |
| 1224 | pthread_spinlock_t*,lock); |
| 1225 | } else { |
| 1226 | DO_PthAPIerror( "pthread_spin_lock", ret ); |
| 1227 | } |
| 1228 | |
| 1229 | if (TRACE_PTH_FNS) { |
| 1230 | fprintf(stderr, " :: spinlock -> %d >>\n", ret); |
| 1231 | } |
| 1232 | return ret; |
| 1233 | } |
| 1234 | |
| 1235 | #elif defined(VGO_darwin) |
| 1236 | #else |
| 1237 | # error "Unsupported OS" |
| 1238 | #endif |
| 1239 | |
| 1240 | |
| 1241 | //----------------------------------------------------------- |
| 1242 | // glibc: pthread_spin_trylock |
| 1243 | // darwin: (doesn't appear to exist) |
| 1244 | #if defined(VGO_linux) |
| 1245 | |
| 1246 | PTH_FUNC(int, pthreadZuspinZutrylock, // pthread_spin_trylock |
| 1247 | pthread_spinlock_t* lock) |
| 1248 | { |
| 1249 | int ret; |
| 1250 | OrigFn fn; |
| 1251 | VALGRIND_GET_ORIG_FN(fn); |
| 1252 | if (TRACE_PTH_FNS) { |
| 1253 | fprintf(stderr, "<< pthread_spin_trylock %p", lock); |
| 1254 | fflush(stderr); |
| 1255 | } |
| 1256 | |
| 1257 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_SPIN_LOCK_PRE, |
| 1258 | pthread_spinlock_t*,lock, long,1/*isTryLock*/); |
| 1259 | |
| 1260 | CALL_FN_W_W(ret, fn, lock); |
| 1261 | |
| 1262 | /* There's a hole here: libpthread now knows the lock is locked, |
| 1263 | but the tool doesn't, so some other thread could run and detect |
| 1264 | that the lock has been acquired by someone (this thread). Does |
| 1265 | this matter? Not sure, but I don't think so. */ |
| 1266 | |
| 1267 | if (ret == 0 /*success*/) { |
| 1268 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_SPIN_LOCK_POST, |
| 1269 | pthread_spinlock_t*,lock); |
| 1270 | } else { |
| 1271 | if (ret != EBUSY) |
| 1272 | DO_PthAPIerror( "pthread_spin_trylock", ret ); |
| 1273 | } |
| 1274 | |
| 1275 | if (TRACE_PTH_FNS) { |
| 1276 | fprintf(stderr, " :: spin_trylock -> %d >>\n", ret); |
| 1277 | } |
| 1278 | return ret; |
| 1279 | } |
| 1280 | |
| 1281 | #elif defined(VGO_darwin) |
| 1282 | #else |
| 1283 | # error "Unsupported OS" |
| 1284 | #endif |
| 1285 | |
| 1286 | #endif // defined(HAVE_PTHREAD_SPIN_LOCK) |
| 1287 | |
| 1288 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1289 | /*----------------------------------------------------------------*/ |
| 1290 | /*--- pthread_rwlock_t functions ---*/ |
| 1291 | /*----------------------------------------------------------------*/ |
| 1292 | |
sewardj | 0c09bf0 | 2011-07-11 22:11:58 +0000 | [diff] [blame] | 1293 | /* Android's pthread.h doesn't say anything about rwlocks, hence these |
| 1294 | functions have to be conditionally compiled. */ |
| 1295 | #if defined(HAVE_PTHREAD_RWLOCK_T) |
| 1296 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1297 | /* Handled: pthread_rwlock_init pthread_rwlock_destroy |
| 1298 | pthread_rwlock_rdlock |
| 1299 | pthread_rwlock_wrlock |
| 1300 | pthread_rwlock_unlock |
| 1301 | |
| 1302 | Unhandled: pthread_rwlock_timedrdlock |
| 1303 | pthread_rwlock_tryrdlock |
| 1304 | |
| 1305 | pthread_rwlock_timedwrlock |
| 1306 | pthread_rwlock_trywrlock |
| 1307 | */ |
| 1308 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1309 | //----------------------------------------------------------- |
| 1310 | // glibc: pthread_rwlock_init |
| 1311 | // darwin: pthread_rwlock_init |
| 1312 | // darwin: pthread_rwlock_init$UNIX2003 |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1313 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1314 | static int pthread_rwlock_init_WRK(pthread_rwlock_t *rwl, |
| 1315 | pthread_rwlockattr_t* attr) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1316 | { |
| 1317 | int ret; |
| 1318 | OrigFn fn; |
| 1319 | VALGRIND_GET_ORIG_FN(fn); |
| 1320 | if (TRACE_PTH_FNS) { |
| 1321 | fprintf(stderr, "<< pthread_rwl_init %p", rwl); fflush(stderr); |
| 1322 | } |
| 1323 | |
| 1324 | CALL_FN_W_WW(ret, fn, rwl,attr); |
| 1325 | |
| 1326 | if (ret == 0 /*success*/) { |
| 1327 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_INIT_POST, |
| 1328 | pthread_rwlock_t*,rwl); |
| 1329 | } else { |
| 1330 | DO_PthAPIerror( "pthread_rwlock_init", ret ); |
| 1331 | } |
| 1332 | |
| 1333 | if (TRACE_PTH_FNS) { |
| 1334 | fprintf(stderr, " :: rwl_init -> %d >>\n", ret); |
| 1335 | } |
| 1336 | return ret; |
| 1337 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1338 | #if defined(VGO_linux) |
| 1339 | PTH_FUNC(int, pthreadZurwlockZuinit, // pthread_rwlock_init |
| 1340 | pthread_rwlock_t *rwl, |
| 1341 | pthread_rwlockattr_t* attr) { |
| 1342 | return pthread_rwlock_init_WRK(rwl, attr); |
| 1343 | } |
| 1344 | #elif defined(VGO_darwin) |
| 1345 | PTH_FUNC(int, pthreadZurwlockZuinitZa, // pthread_rwlock_init* |
| 1346 | pthread_rwlock_t *rwl, |
| 1347 | pthread_rwlockattr_t* attr) { |
| 1348 | return pthread_rwlock_init_WRK(rwl, attr); |
| 1349 | } |
| 1350 | #else |
| 1351 | # error "Unsupported OS" |
| 1352 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1353 | |
| 1354 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1355 | //----------------------------------------------------------- |
| 1356 | // glibc: pthread_rwlock_destroy |
| 1357 | // darwin: pthread_rwlock_destroy |
| 1358 | // darwin: pthread_rwlock_destroy$UNIX2003 |
| 1359 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1360 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1361 | static int pthread_rwlock_destroy_WRK(pthread_rwlock_t* rwl) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1362 | { |
| 1363 | int ret; |
| 1364 | OrigFn fn; |
| 1365 | VALGRIND_GET_ORIG_FN(fn); |
| 1366 | if (TRACE_PTH_FNS) { |
| 1367 | fprintf(stderr, "<< pthread_rwl_destroy %p", rwl); fflush(stderr); |
| 1368 | } |
| 1369 | |
| 1370 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_DESTROY_PRE, |
| 1371 | pthread_rwlock_t*,rwl); |
| 1372 | |
| 1373 | CALL_FN_W_W(ret, fn, rwl); |
| 1374 | |
| 1375 | if (ret != 0) { |
| 1376 | DO_PthAPIerror( "pthread_rwlock_destroy", ret ); |
| 1377 | } |
| 1378 | |
| 1379 | if (TRACE_PTH_FNS) { |
| 1380 | fprintf(stderr, " :: rwl_destroy -> %d >>\n", ret); |
| 1381 | } |
| 1382 | return ret; |
| 1383 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1384 | #if defined(VGO_linux) |
| 1385 | PTH_FUNC(int, pthreadZurwlockZudestroy, // pthread_rwlock_destroy |
| 1386 | pthread_rwlock_t *rwl) { |
| 1387 | return pthread_rwlock_destroy_WRK(rwl); |
| 1388 | } |
| 1389 | #elif defined(VGO_darwin) |
| 1390 | PTH_FUNC(int, pthreadZurwlockZudestroyZa, // pthread_rwlock_destroy* |
| 1391 | pthread_rwlock_t *rwl) { |
| 1392 | return pthread_rwlock_destroy_WRK(rwl); |
| 1393 | } |
| 1394 | #else |
| 1395 | # error "Unsupported OS" |
| 1396 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1397 | |
| 1398 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1399 | //----------------------------------------------------------- |
| 1400 | // glibc: pthread_rwlock_wrlock |
| 1401 | // darwin: pthread_rwlock_wrlock |
| 1402 | // darwin: pthread_rwlock_wrlock$UNIX2003 |
| 1403 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1404 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1405 | static int pthread_rwlock_wrlock_WRK(pthread_rwlock_t* rwlock) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1406 | { |
| 1407 | int ret; |
| 1408 | OrigFn fn; |
| 1409 | VALGRIND_GET_ORIG_FN(fn); |
| 1410 | if (TRACE_PTH_FNS) { |
| 1411 | fprintf(stderr, "<< pthread_rwl_wlk %p", rwlock); fflush(stderr); |
| 1412 | } |
| 1413 | |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1414 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 1415 | pthread_rwlock_t*,rwlock, |
| 1416 | long,1/*isW*/, long,0/*!isTryLock*/); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1417 | |
| 1418 | CALL_FN_W_W(ret, fn, rwlock); |
| 1419 | |
| 1420 | if (ret == 0 /*success*/) { |
| 1421 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 1422 | pthread_rwlock_t*,rwlock, long,1/*isW*/); |
| 1423 | } else { |
| 1424 | DO_PthAPIerror( "pthread_rwlock_wrlock", ret ); |
| 1425 | } |
| 1426 | |
| 1427 | if (TRACE_PTH_FNS) { |
| 1428 | fprintf(stderr, " :: rwl_wlk -> %d >>\n", ret); |
| 1429 | } |
| 1430 | return ret; |
| 1431 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1432 | #if defined(VGO_linux) |
| 1433 | PTH_FUNC(int, pthreadZurwlockZuwrlock, // pthread_rwlock_wrlock |
| 1434 | pthread_rwlock_t* rwlock) { |
| 1435 | return pthread_rwlock_wrlock_WRK(rwlock); |
| 1436 | } |
| 1437 | #elif defined(VGO_darwin) |
| 1438 | PTH_FUNC(int, pthreadZurwlockZuwrlockZa, // pthread_rwlock_wrlock* |
| 1439 | pthread_rwlock_t* rwlock) { |
| 1440 | return pthread_rwlock_wrlock_WRK(rwlock); |
| 1441 | } |
| 1442 | #else |
| 1443 | # error "Unsupported OS" |
| 1444 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1445 | |
| 1446 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1447 | //----------------------------------------------------------- |
| 1448 | // glibc: pthread_rwlock_rdlock |
| 1449 | // darwin: pthread_rwlock_rdlock |
| 1450 | // darwin: pthread_rwlock_rdlock$UNIX2003 |
| 1451 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1452 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1453 | static int pthread_rwlock_rdlock_WRK(pthread_rwlock_t* rwlock) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1454 | { |
| 1455 | int ret; |
| 1456 | OrigFn fn; |
| 1457 | VALGRIND_GET_ORIG_FN(fn); |
| 1458 | if (TRACE_PTH_FNS) { |
| 1459 | fprintf(stderr, "<< pthread_rwl_rlk %p", rwlock); fflush(stderr); |
| 1460 | } |
| 1461 | |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1462 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 1463 | pthread_rwlock_t*,rwlock, |
| 1464 | long,0/*!isW*/, long,0/*!isTryLock*/); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1465 | |
| 1466 | CALL_FN_W_W(ret, fn, rwlock); |
| 1467 | |
| 1468 | if (ret == 0 /*success*/) { |
| 1469 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 1470 | pthread_rwlock_t*,rwlock, long,0/*!isW*/); |
| 1471 | } else { |
| 1472 | DO_PthAPIerror( "pthread_rwlock_rdlock", ret ); |
| 1473 | } |
| 1474 | |
| 1475 | if (TRACE_PTH_FNS) { |
| 1476 | fprintf(stderr, " :: rwl_rlk -> %d >>\n", ret); |
| 1477 | } |
| 1478 | return ret; |
| 1479 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1480 | #if defined(VGO_linux) |
| 1481 | PTH_FUNC(int, pthreadZurwlockZurdlock, // pthread_rwlock_rdlock |
| 1482 | pthread_rwlock_t* rwlock) { |
| 1483 | return pthread_rwlock_rdlock_WRK(rwlock); |
| 1484 | } |
| 1485 | #elif defined(VGO_darwin) |
| 1486 | PTH_FUNC(int, pthreadZurwlockZurdlockZa, // pthread_rwlock_rdlock* |
| 1487 | pthread_rwlock_t* rwlock) { |
| 1488 | return pthread_rwlock_rdlock_WRK(rwlock); |
| 1489 | } |
| 1490 | #else |
| 1491 | # error "Unsupported OS" |
| 1492 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1493 | |
| 1494 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1495 | //----------------------------------------------------------- |
| 1496 | // glibc: pthread_rwlock_trywrlock |
| 1497 | // darwin: pthread_rwlock_trywrlock |
| 1498 | // darwin: pthread_rwlock_trywrlock$UNIX2003 |
| 1499 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1500 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1501 | static int pthread_rwlock_trywrlock_WRK(pthread_rwlock_t* rwlock) |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1502 | { |
| 1503 | int ret; |
| 1504 | OrigFn fn; |
| 1505 | VALGRIND_GET_ORIG_FN(fn); |
| 1506 | if (TRACE_PTH_FNS) { |
| 1507 | fprintf(stderr, "<< pthread_rwl_trywlk %p", rwlock); fflush(stderr); |
| 1508 | } |
| 1509 | |
| 1510 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 1511 | pthread_rwlock_t*,rwlock, |
| 1512 | long,1/*isW*/, long,1/*isTryLock*/); |
| 1513 | |
| 1514 | CALL_FN_W_W(ret, fn, rwlock); |
| 1515 | |
| 1516 | /* There's a hole here: libpthread now knows the lock is locked, |
| 1517 | but the tool doesn't, so some other thread could run and detect |
| 1518 | that the lock has been acquired by someone (this thread). Does |
| 1519 | this matter? Not sure, but I don't think so. */ |
| 1520 | |
| 1521 | if (ret == 0 /*success*/) { |
| 1522 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 1523 | pthread_rwlock_t*,rwlock, long,1/*isW*/); |
| 1524 | } else { |
| 1525 | if (ret != EBUSY) |
| 1526 | DO_PthAPIerror( "pthread_rwlock_trywrlock", ret ); |
| 1527 | } |
| 1528 | |
| 1529 | if (TRACE_PTH_FNS) { |
| 1530 | fprintf(stderr, " :: rwl_trywlk -> %d >>\n", ret); |
| 1531 | } |
| 1532 | return ret; |
| 1533 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1534 | #if defined(VGO_linux) |
| 1535 | PTH_FUNC(int, pthreadZurwlockZutrywrlock, // pthread_rwlock_trywrlock |
| 1536 | pthread_rwlock_t* rwlock) { |
| 1537 | return pthread_rwlock_trywrlock_WRK(rwlock); |
| 1538 | } |
| 1539 | #elif defined(VGO_darwin) |
| 1540 | PTH_FUNC(int, pthreadZurwlockZutrywrlockZa, // pthread_rwlock_trywrlock* |
| 1541 | pthread_rwlock_t* rwlock) { |
| 1542 | return pthread_rwlock_trywrlock_WRK(rwlock); |
| 1543 | } |
| 1544 | #else |
| 1545 | # error "Unsupported OS" |
| 1546 | #endif |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1547 | |
| 1548 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1549 | //----------------------------------------------------------- |
| 1550 | // glibc: pthread_rwlock_tryrdlock |
| 1551 | // darwin: pthread_rwlock_trywrlock |
| 1552 | // darwin: pthread_rwlock_trywrlock$UNIX2003 |
| 1553 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1554 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1555 | static int pthread_rwlock_tryrdlock_WRK(pthread_rwlock_t* rwlock) |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1556 | { |
| 1557 | int ret; |
| 1558 | OrigFn fn; |
| 1559 | VALGRIND_GET_ORIG_FN(fn); |
| 1560 | if (TRACE_PTH_FNS) { |
| 1561 | fprintf(stderr, "<< pthread_rwl_tryrlk %p", rwlock); fflush(stderr); |
| 1562 | } |
| 1563 | |
| 1564 | DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 1565 | pthread_rwlock_t*,rwlock, |
| 1566 | long,0/*!isW*/, long,1/*isTryLock*/); |
| 1567 | |
| 1568 | CALL_FN_W_W(ret, fn, rwlock); |
| 1569 | |
| 1570 | /* There's a hole here: libpthread now knows the lock is locked, |
| 1571 | but the tool doesn't, so some other thread could run and detect |
| 1572 | that the lock has been acquired by someone (this thread). Does |
| 1573 | this matter? Not sure, but I don't think so. */ |
| 1574 | |
| 1575 | if (ret == 0 /*success*/) { |
| 1576 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 1577 | pthread_rwlock_t*,rwlock, long,0/*!isW*/); |
| 1578 | } else { |
| 1579 | if (ret != EBUSY) |
| 1580 | DO_PthAPIerror( "pthread_rwlock_tryrdlock", ret ); |
| 1581 | } |
| 1582 | |
| 1583 | if (TRACE_PTH_FNS) { |
| 1584 | fprintf(stderr, " :: rwl_tryrlk -> %d >>\n", ret); |
| 1585 | } |
| 1586 | return ret; |
| 1587 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1588 | #if defined(VGO_linux) |
| 1589 | PTH_FUNC(int, pthreadZurwlockZutryrdlock, // pthread_rwlock_tryrdlock |
| 1590 | pthread_rwlock_t* rwlock) { |
| 1591 | return pthread_rwlock_tryrdlock_WRK(rwlock); |
| 1592 | } |
| 1593 | #elif defined(VGO_darwin) |
| 1594 | PTH_FUNC(int, pthreadZurwlockZutryrdlockZa, // pthread_rwlock_tryrdlock* |
| 1595 | pthread_rwlock_t* rwlock) { |
| 1596 | return pthread_rwlock_tryrdlock_WRK(rwlock); |
| 1597 | } |
| 1598 | #else |
| 1599 | # error "Unsupported OS" |
| 1600 | #endif |
sewardj | 789c3c5 | 2008-02-25 12:10:07 +0000 | [diff] [blame] | 1601 | |
| 1602 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1603 | //----------------------------------------------------------- |
| 1604 | // glibc: pthread_rwlock_unlock |
| 1605 | // darwin: pthread_rwlock_unlock |
| 1606 | // darwin: pthread_rwlock_unlock$UNIX2003 |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1607 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1608 | static int pthread_rwlock_unlock_WRK(pthread_rwlock_t* rwlock) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1609 | { |
| 1610 | int ret; |
| 1611 | OrigFn fn; |
| 1612 | VALGRIND_GET_ORIG_FN(fn); |
| 1613 | if (TRACE_PTH_FNS) { |
| 1614 | fprintf(stderr, "<< pthread_rwl_unlk %p", rwlock); fflush(stderr); |
| 1615 | } |
| 1616 | |
| 1617 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_UNLOCK_PRE, |
| 1618 | pthread_rwlock_t*,rwlock); |
| 1619 | |
| 1620 | CALL_FN_W_W(ret, fn, rwlock); |
| 1621 | |
| 1622 | if (ret == 0 /*success*/) { |
| 1623 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_UNLOCK_POST, |
| 1624 | pthread_rwlock_t*,rwlock); |
| 1625 | } else { |
| 1626 | DO_PthAPIerror( "pthread_rwlock_unlock", ret ); |
| 1627 | } |
| 1628 | |
| 1629 | if (TRACE_PTH_FNS) { |
| 1630 | fprintf(stderr, " :: rwl_unlk -> %d >>\n", ret); |
| 1631 | } |
| 1632 | return ret; |
| 1633 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1634 | #if defined(VGO_linux) |
| 1635 | PTH_FUNC(int, pthreadZurwlockZuunlock, // pthread_rwlock_unlock |
| 1636 | pthread_rwlock_t* rwlock) { |
| 1637 | return pthread_rwlock_unlock_WRK(rwlock); |
| 1638 | } |
| 1639 | #elif defined(VGO_darwin) |
| 1640 | PTH_FUNC(int, pthreadZurwlockZuunlockZa, // pthread_rwlock_unlock* |
| 1641 | pthread_rwlock_t* rwlock) { |
| 1642 | return pthread_rwlock_unlock_WRK(rwlock); |
| 1643 | } |
| 1644 | #else |
| 1645 | # error "Unsupported OS" |
| 1646 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1647 | |
sewardj | 0c09bf0 | 2011-07-11 22:11:58 +0000 | [diff] [blame] | 1648 | #endif /* defined(HAVE_PTHREAD_RWLOCK_T) */ |
| 1649 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1650 | |
| 1651 | /*----------------------------------------------------------------*/ |
| 1652 | /*--- POSIX semaphores ---*/ |
| 1653 | /*----------------------------------------------------------------*/ |
| 1654 | |
| 1655 | #include <semaphore.h> |
sewardj | 28a7f7d | 2009-07-26 20:15:37 +0000 | [diff] [blame] | 1656 | #include <fcntl.h> /* O_CREAT */ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1657 | |
| 1658 | #define TRACE_SEM_FNS 0 |
| 1659 | |
| 1660 | /* Handled: |
| 1661 | int sem_init(sem_t *sem, int pshared, unsigned value); |
| 1662 | int sem_destroy(sem_t *sem); |
| 1663 | int sem_wait(sem_t *sem); |
| 1664 | int sem_post(sem_t *sem); |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1665 | sem_t* sem_open(const char *name, int oflag, |
| 1666 | ... [mode_t mode, unsigned value]); |
| 1667 | [complete with its idiotic semantics] |
| 1668 | int sem_close(sem_t* sem); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1669 | |
| 1670 | Unhandled: |
| 1671 | int sem_trywait(sem_t *sem); |
| 1672 | int sem_timedwait(sem_t *restrict sem, |
| 1673 | const struct timespec *restrict abs_timeout); |
| 1674 | */ |
| 1675 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1676 | //----------------------------------------------------------- |
| 1677 | // glibc: sem_init@@GLIBC_2.2.5 |
| 1678 | // glibc: sem_init@@GLIBC_2.1 |
| 1679 | // glibc: sem_init@GLIBC_2.0 |
| 1680 | // darwin: sem_init |
| 1681 | // |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1682 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1683 | static int sem_init_WRK(sem_t* sem, int pshared, unsigned long value) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1684 | { |
| 1685 | OrigFn fn; |
| 1686 | int ret; |
| 1687 | VALGRIND_GET_ORIG_FN(fn); |
| 1688 | |
| 1689 | if (TRACE_SEM_FNS) { |
| 1690 | fprintf(stderr, "<< sem_init(%p,%d,%lu) ", sem,pshared,value); |
| 1691 | fflush(stderr); |
| 1692 | } |
| 1693 | |
| 1694 | CALL_FN_W_WWW(ret, fn, sem,pshared,value); |
| 1695 | |
| 1696 | if (ret == 0) { |
sewardj | 11e352f | 2007-11-30 11:11:02 +0000 | [diff] [blame] | 1697 | DO_CREQ_v_WW(_VG_USERREQ__HG_POSIX_SEM_INIT_POST, |
| 1698 | sem_t*, sem, unsigned long, value); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1699 | } else { |
| 1700 | DO_PthAPIerror( "sem_init", errno ); |
| 1701 | } |
| 1702 | |
| 1703 | if (TRACE_SEM_FNS) { |
| 1704 | fprintf(stderr, " sem_init -> %d >>\n", ret); |
| 1705 | fflush(stderr); |
| 1706 | } |
| 1707 | |
| 1708 | return ret; |
| 1709 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1710 | #if defined(VGO_linux) |
| 1711 | PTH_FUNC(int, semZuinitZAZa, // sem_init@* |
| 1712 | sem_t* sem, int pshared, unsigned long value) { |
| 1713 | return sem_init_WRK(sem, pshared, value); |
| 1714 | } |
| 1715 | #elif defined(VGO_darwin) |
| 1716 | PTH_FUNC(int, semZuinit, // sem_init |
| 1717 | sem_t* sem, int pshared, unsigned long value) { |
| 1718 | return sem_init_WRK(sem, pshared, value); |
| 1719 | } |
| 1720 | #else |
| 1721 | # error "Unsupported OS" |
| 1722 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1723 | |
| 1724 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1725 | //----------------------------------------------------------- |
| 1726 | // glibc: sem_destroy@GLIBC_2.0 |
| 1727 | // glibc: sem_destroy@@GLIBC_2.1 |
| 1728 | // glibc: sem_destroy@@GLIBC_2.2.5 |
| 1729 | // darwin: sem_destroy |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1730 | __attribute__((noinline)) |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1731 | static int sem_destroy_WRK(sem_t* sem) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1732 | { |
| 1733 | OrigFn fn; |
| 1734 | int ret; |
| 1735 | VALGRIND_GET_ORIG_FN(fn); |
| 1736 | |
| 1737 | if (TRACE_SEM_FNS) { |
| 1738 | fprintf(stderr, "<< sem_destroy(%p) ", sem); |
| 1739 | fflush(stderr); |
| 1740 | } |
| 1741 | |
sewardj | 11e352f | 2007-11-30 11:11:02 +0000 | [diff] [blame] | 1742 | DO_CREQ_v_W(_VG_USERREQ__HG_POSIX_SEM_DESTROY_PRE, sem_t*, sem); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1743 | |
| 1744 | CALL_FN_W_W(ret, fn, sem); |
| 1745 | |
| 1746 | if (ret != 0) { |
| 1747 | DO_PthAPIerror( "sem_destroy", errno ); |
| 1748 | } |
| 1749 | |
| 1750 | if (TRACE_SEM_FNS) { |
| 1751 | fprintf(stderr, " sem_destroy -> %d >>\n", ret); |
| 1752 | fflush(stderr); |
| 1753 | } |
| 1754 | |
| 1755 | return ret; |
| 1756 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1757 | #if defined(VGO_linux) |
| 1758 | PTH_FUNC(int, semZudestroyZAZa, // sem_destroy* |
| 1759 | sem_t* sem) { |
| 1760 | return sem_destroy_WRK(sem); |
| 1761 | } |
| 1762 | #elif defined(VGO_darwin) |
| 1763 | PTH_FUNC(int, semZudestroy, // sem_destroy |
| 1764 | sem_t* sem) { |
| 1765 | return sem_destroy_WRK(sem); |
| 1766 | } |
| 1767 | #else |
| 1768 | # error "Unsupported OS" |
| 1769 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1770 | |
| 1771 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1772 | //----------------------------------------------------------- |
| 1773 | // glibc: sem_wait |
| 1774 | // glibc: sem_wait@GLIBC_2.0 |
| 1775 | // glibc: sem_wait@@GLIBC_2.1 |
| 1776 | // darwin: sem_wait |
| 1777 | // darwin: sem_wait$NOCANCEL$UNIX2003 |
| 1778 | // darwin: sem_wait$UNIX2003 |
| 1779 | // |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1780 | /* wait: decrement semaphore - acquire lockage */ |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1781 | __attribute__((noinline)) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1782 | static int sem_wait_WRK(sem_t* sem) |
| 1783 | { |
| 1784 | OrigFn fn; |
| 1785 | int ret; |
| 1786 | VALGRIND_GET_ORIG_FN(fn); |
| 1787 | |
| 1788 | if (TRACE_SEM_FNS) { |
| 1789 | fprintf(stderr, "<< sem_wait(%p) ", sem); |
| 1790 | fflush(stderr); |
| 1791 | } |
| 1792 | |
| 1793 | CALL_FN_W_W(ret, fn, sem); |
| 1794 | |
| 1795 | if (ret == 0) { |
sewardj | 11e352f | 2007-11-30 11:11:02 +0000 | [diff] [blame] | 1796 | DO_CREQ_v_W(_VG_USERREQ__HG_POSIX_SEM_WAIT_POST, sem_t*,sem); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1797 | } else { |
| 1798 | DO_PthAPIerror( "sem_wait", errno ); |
| 1799 | } |
| 1800 | |
| 1801 | if (TRACE_SEM_FNS) { |
| 1802 | fprintf(stderr, " sem_wait -> %d >>\n", ret); |
| 1803 | fflush(stderr); |
| 1804 | } |
| 1805 | |
| 1806 | return ret; |
| 1807 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1808 | #if defined(VGO_linux) |
| 1809 | PTH_FUNC(int, semZuwait, sem_t* sem) { /* sem_wait */ |
| 1810 | return sem_wait_WRK(sem); |
| 1811 | } |
| 1812 | PTH_FUNC(int, semZuwaitZAZa, sem_t* sem) { /* sem_wait@* */ |
| 1813 | return sem_wait_WRK(sem); |
| 1814 | } |
| 1815 | #elif defined(VGO_darwin) |
| 1816 | PTH_FUNC(int, semZuwait, sem_t* sem) { /* sem_wait */ |
| 1817 | return sem_wait_WRK(sem); |
| 1818 | } |
| 1819 | PTH_FUNC(int, semZuwaitZDZa, sem_t* sem) { /* sem_wait$* */ |
| 1820 | return sem_wait_WRK(sem); |
| 1821 | } |
| 1822 | #else |
| 1823 | # error "Unsupported OS" |
| 1824 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1825 | |
| 1826 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1827 | //----------------------------------------------------------- |
| 1828 | // glibc: sem_post |
| 1829 | // glibc: sem_post@GLIBC_2.0 |
| 1830 | // glibc: sem_post@@GLIBC_2.1 |
| 1831 | // darwin: sem_post |
| 1832 | // |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1833 | /* post: increment semaphore - release lockage */ |
florian | 31014da | 2011-09-26 00:29:44 +0000 | [diff] [blame] | 1834 | __attribute__((noinline)) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1835 | static int sem_post_WRK(sem_t* sem) |
| 1836 | { |
| 1837 | OrigFn fn; |
| 1838 | int ret; |
| 1839 | |
| 1840 | VALGRIND_GET_ORIG_FN(fn); |
| 1841 | |
| 1842 | if (TRACE_SEM_FNS) { |
| 1843 | fprintf(stderr, "<< sem_post(%p) ", sem); |
| 1844 | fflush(stderr); |
| 1845 | } |
| 1846 | |
sewardj | 11e352f | 2007-11-30 11:11:02 +0000 | [diff] [blame] | 1847 | DO_CREQ_v_W(_VG_USERREQ__HG_POSIX_SEM_POST_PRE, sem_t*,sem); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1848 | |
| 1849 | CALL_FN_W_W(ret, fn, sem); |
| 1850 | |
| 1851 | if (ret != 0) { |
| 1852 | DO_PthAPIerror( "sem_post", errno ); |
| 1853 | } |
| 1854 | |
| 1855 | if (TRACE_SEM_FNS) { |
| 1856 | fprintf(stderr, " sem_post -> %d >>\n", ret); |
| 1857 | fflush(stderr); |
| 1858 | } |
| 1859 | |
| 1860 | return ret; |
| 1861 | } |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1862 | #if defined(VGO_linux) |
| 1863 | PTH_FUNC(int, semZupost, sem_t* sem) { /* sem_post */ |
| 1864 | return sem_post_WRK(sem); |
| 1865 | } |
| 1866 | PTH_FUNC(int, semZupostZAZa, sem_t* sem) { /* sem_post@* */ |
| 1867 | return sem_post_WRK(sem); |
| 1868 | } |
| 1869 | #elif defined(VGO_darwin) |
| 1870 | PTH_FUNC(int, semZupost, sem_t* sem) { /* sem_post */ |
| 1871 | return sem_post_WRK(sem); |
| 1872 | } |
| 1873 | #else |
| 1874 | # error "Unsupported OS" |
| 1875 | #endif |
| 1876 | |
| 1877 | |
| 1878 | //----------------------------------------------------------- |
| 1879 | // glibc: sem_open |
| 1880 | // darwin: sem_open |
| 1881 | // |
| 1882 | PTH_FUNC(sem_t*, semZuopen, |
| 1883 | const char* name, long oflag, |
| 1884 | long mode, unsigned long value) |
| 1885 | { |
| 1886 | /* A copy of sem_init_WRK (more or less). Is this correct? */ |
| 1887 | OrigFn fn; |
| 1888 | sem_t* ret; |
| 1889 | VALGRIND_GET_ORIG_FN(fn); |
| 1890 | |
| 1891 | if (TRACE_SEM_FNS) { |
| 1892 | fprintf(stderr, "<< sem_open(\"%s\",%ld,%lx,%lu) ", |
| 1893 | name,oflag,mode,value); |
| 1894 | fflush(stderr); |
| 1895 | } |
| 1896 | |
| 1897 | CALL_FN_W_WWWW(ret, fn, name,oflag,mode,value); |
| 1898 | |
| 1899 | if (ret != SEM_FAILED && (oflag & O_CREAT)) { |
| 1900 | DO_CREQ_v_WW(_VG_USERREQ__HG_POSIX_SEM_INIT_POST, |
| 1901 | sem_t*, ret, unsigned long, value); |
| 1902 | } |
| 1903 | if (ret == SEM_FAILED) { |
| 1904 | DO_PthAPIerror( "sem_open", errno ); |
| 1905 | } |
| 1906 | |
| 1907 | if (TRACE_SEM_FNS) { |
| 1908 | fprintf(stderr, " sem_open -> %p >>\n", ret); |
| 1909 | fflush(stderr); |
| 1910 | } |
| 1911 | |
| 1912 | return ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 1916 | //----------------------------------------------------------- |
| 1917 | // glibc: sem_close |
| 1918 | // darwin: sem_close |
| 1919 | PTH_FUNC(int, sem_close, sem_t* sem) |
| 1920 | { |
| 1921 | OrigFn fn; |
| 1922 | int ret; |
| 1923 | VALGRIND_GET_ORIG_FN(fn); |
| 1924 | |
| 1925 | if (TRACE_SEM_FNS) { |
| 1926 | fprintf(stderr, "<< sem_close(%p) ", sem); |
| 1927 | fflush(stderr); |
| 1928 | } |
| 1929 | |
| 1930 | DO_CREQ_v_W(_VG_USERREQ__HG_POSIX_SEM_DESTROY_PRE, sem_t*, sem); |
| 1931 | |
| 1932 | CALL_FN_W_W(ret, fn, sem); |
| 1933 | |
| 1934 | if (ret != 0) { |
| 1935 | DO_PthAPIerror( "sem_close", errno ); |
| 1936 | } |
| 1937 | |
| 1938 | if (TRACE_SEM_FNS) { |
| 1939 | fprintf(stderr, " close -> %d >>\n", ret); |
| 1940 | fflush(stderr); |
| 1941 | } |
| 1942 | |
| 1943 | return ret; |
| 1944 | } |
| 1945 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1946 | |
| 1947 | /*----------------------------------------------------------------*/ |
| 1948 | /*--- Qt 4 threading functions (w/ GNU name mangling) ---*/ |
| 1949 | /*----------------------------------------------------------------*/ |
| 1950 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 1951 | /* Handled: |
| 1952 | QMutex::lock() |
| 1953 | QMutex::unlock() |
| 1954 | QMutex::tryLock() |
| 1955 | QMutex::tryLock(int) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1956 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 1957 | QMutex::QMutex(QMutex::RecursionMode) _ZN6QMutexC1ENS_13RecursionModeE |
| 1958 | QMutex::QMutex(QMutex::RecursionMode) _ZN6QMutexC2ENS_13RecursionModeE |
| 1959 | QMutex::~QMutex() _ZN6QMutexD1Ev |
| 1960 | QMutex::~QMutex() _ZN6QMutexD2Ev |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1961 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 1962 | Unhandled: |
| 1963 | QReadWriteLock::lockForRead() |
| 1964 | QReadWriteLock::lockForWrite() |
| 1965 | QReadWriteLock::unlock() |
| 1966 | QReadWriteLock::tryLockForRead(int) |
| 1967 | QReadWriteLock::tryLockForRead() |
| 1968 | QReadWriteLock::tryLockForWrite(int) |
| 1969 | QReadWriteLock::tryLockForWrite() |
| 1970 | |
| 1971 | QWaitCondition::wait(QMutex*, unsigned long) |
| 1972 | QWaitCondition::wakeAll() |
| 1973 | QWaitCondition::wakeOne() |
| 1974 | |
| 1975 | QSemaphore::* |
| 1976 | */ |
| 1977 | /* More comments, 19 Nov 08, based on assessment of qt-4.5.0TP1, |
| 1978 | at least on Unix: |
| 1979 | |
| 1980 | It's apparently only necessary to intercept QMutex, since that is |
| 1981 | not implemented using pthread_mutex_t; instead Qt4 has its own |
| 1982 | implementation based on atomics (to check the non-contended case) |
| 1983 | and pthread_cond_wait (to wait in the contended case). |
| 1984 | |
| 1985 | QReadWriteLock is built on top of QMutex, counters, and a wait |
| 1986 | queue. So we don't need to handle it specially once QMutex |
| 1987 | handling is correct -- presumably the dependencies through QMutex |
| 1988 | are sufficient to avoid any false race reports. On the other hand, |
| 1989 | it is an open question whether too many dependencies are observed |
| 1990 | -- in which case we may miss races (false negatives). I suspect |
| 1991 | this is likely to be the case, unfortunately. |
| 1992 | |
| 1993 | QWaitCondition is built on pthread_cond_t, pthread_mutex_t, QMutex |
| 1994 | and QReadWriteLock. Same compositional-correctness justificiation |
| 1995 | and limitations as fro QReadWriteLock. |
| 1996 | |
| 1997 | Ditto QSemaphore (from cursory examination). |
| 1998 | |
| 1999 | Does it matter that only QMutex is handled directly? Open |
| 2000 | question. From testing with drd/tests/qt4_* and with KDE4 apps, it |
| 2001 | appears that no false errors are reported; however it is not clear |
| 2002 | if this is causing false negatives. |
| 2003 | |
| 2004 | Another problem with Qt4 is thread exiting. Threads are created |
| 2005 | with pthread_create (fine); but they detach and simply exit when |
| 2006 | done. There is no use of pthread_join, and the provided |
| 2007 | wait-for-a-thread-to-exit mechanism (QThread::wait, I believe) |
| 2008 | relies on a system of mutexes and flags. I suspect this also |
| 2009 | causes too many dependencies to appear. Consequently H sometimes |
| 2010 | fails to detect races at exit in some very short-lived racy |
| 2011 | programs, because it appears that a thread can exit _and_ have an |
| 2012 | observed dependency edge back to the main thread (presumably) |
| 2013 | before the main thread reaps the child (that is, calls |
| 2014 | QThread::wait). |
| 2015 | |
| 2016 | This theory is supported by the observation that if all threads are |
| 2017 | made to wait at a pthread_barrier_t immediately before they exit, |
| 2018 | then H's detection of races in such programs becomes reliable; |
| 2019 | without the barrier, it is varies from run to run, depending |
| 2020 | (according to investigation) on whether aforementioned |
| 2021 | exit-before-reaping behaviour happens or not. |
| 2022 | |
| 2023 | Finally, why is it necessary to intercept the QMutex constructors |
| 2024 | and destructors? The constructors are intercepted only as a matter |
| 2025 | of convenience, so H can print accurate "first observed at" |
| 2026 | clauses. However, it is actually necessary to intercept the |
| 2027 | destructors (as it is with pthread_mutex_destroy) in order that |
| 2028 | locks get removed from LAOG when they are destroyed. |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2029 | */ |
| 2030 | |
| 2031 | // soname is libQtCore.so.4 ; match against libQtCore.so* |
| 2032 | #define QT4_FUNC(ret_ty, f, args...) \ |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2033 | ret_ty I_WRAP_SONAME_FNNAME_ZU(libQtCoreZdsoZa,f)(args); \ |
| 2034 | ret_ty I_WRAP_SONAME_FNNAME_ZU(libQtCoreZdsoZa,f)(args) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2035 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2036 | //----------------------------------------------------------- |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2037 | // QMutex::lock() |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2038 | QT4_FUNC(void, _ZN6QMutex4lockEv, void* self) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2039 | { |
| 2040 | OrigFn fn; |
| 2041 | VALGRIND_GET_ORIG_FN(fn); |
| 2042 | if (TRACE_QT4_FNS) { |
| 2043 | fprintf(stderr, "<< QMutex::lock %p", self); fflush(stderr); |
| 2044 | } |
| 2045 | |
| 2046 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 2047 | void*,self, long,0/*!isTryLock*/); |
| 2048 | |
| 2049 | CALL_FN_v_W(fn, self); |
| 2050 | |
| 2051 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 2052 | void*, self); |
| 2053 | |
| 2054 | if (TRACE_QT4_FNS) { |
| 2055 | fprintf(stderr, " :: Q::lock done >>\n"); |
| 2056 | } |
| 2057 | } |
| 2058 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2059 | //----------------------------------------------------------- |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2060 | // QMutex::unlock() |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2061 | QT4_FUNC(void, _ZN6QMutex6unlockEv, void* self) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2062 | { |
| 2063 | OrigFn fn; |
| 2064 | VALGRIND_GET_ORIG_FN(fn); |
| 2065 | |
| 2066 | if (TRACE_QT4_FNS) { |
| 2067 | fprintf(stderr, "<< QMutex::unlock %p", self); fflush(stderr); |
| 2068 | } |
| 2069 | |
| 2070 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_PRE, |
| 2071 | void*, self); |
| 2072 | |
| 2073 | CALL_FN_v_W(fn, self); |
| 2074 | |
| 2075 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_UNLOCK_POST, |
| 2076 | void*, self); |
| 2077 | |
| 2078 | if (TRACE_QT4_FNS) { |
| 2079 | fprintf(stderr, " Q::unlock done >>\n"); |
| 2080 | } |
| 2081 | } |
| 2082 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2083 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2084 | // bool QMutex::tryLock() |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2085 | // using 'long' to mimic C++ 'bool' |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2086 | QT4_FUNC(long, _ZN6QMutex7tryLockEv, void* self) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2087 | { |
| 2088 | OrigFn fn; |
| 2089 | long ret; |
| 2090 | VALGRIND_GET_ORIG_FN(fn); |
| 2091 | if (TRACE_QT4_FNS) { |
| 2092 | fprintf(stderr, "<< QMutex::tryLock %p", self); fflush(stderr); |
| 2093 | } |
| 2094 | |
| 2095 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 2096 | void*,self, long,1/*isTryLock*/); |
| 2097 | |
| 2098 | CALL_FN_W_W(ret, fn, self); |
| 2099 | |
| 2100 | // assumes that only the low 8 bits of the 'bool' are significant |
| 2101 | if (ret & 0xFF) { |
| 2102 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 2103 | void*, self); |
| 2104 | } |
| 2105 | |
| 2106 | if (TRACE_QT4_FNS) { |
| 2107 | fprintf(stderr, " :: Q::tryLock -> %lu >>\n", ret); |
| 2108 | } |
| 2109 | |
| 2110 | return ret; |
| 2111 | } |
| 2112 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2113 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2114 | // bool QMutex::tryLock(int) |
| 2115 | // using 'long' to mimic C++ 'bool' |
| 2116 | QT4_FUNC(long, _ZN6QMutex7tryLockEi, void* self, long arg2) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2117 | { |
| 2118 | OrigFn fn; |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2119 | long ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2120 | VALGRIND_GET_ORIG_FN(fn); |
| 2121 | if (TRACE_QT4_FNS) { |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2122 | fprintf(stderr, "<< QMutex::tryLock(int) %p %d", self, (int)arg2); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2123 | fflush(stderr); |
| 2124 | } |
| 2125 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2126 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_PRE, |
| 2127 | void*,self, long,1/*isTryLock*/); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2128 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2129 | CALL_FN_W_WW(ret, fn, self,arg2); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2130 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2131 | // assumes that only the low 8 bits of the 'bool' are significant |
| 2132 | if (ret & 0xFF) { |
| 2133 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_LOCK_POST, |
| 2134 | void*, self); |
| 2135 | } |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2136 | |
| 2137 | if (TRACE_QT4_FNS) { |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2138 | fprintf(stderr, " :: Q::tryLock(int) -> %lu >>\n", ret); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2139 | } |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2140 | |
| 2141 | return ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2142 | } |
| 2143 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2144 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2145 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2146 | // It's not really very clear what the args are here. But from |
| 2147 | // a bit of dataflow analysis of the generated machine code of |
| 2148 | // the original function, it appears this takes two args, and |
| 2149 | // returns nothing. Nevertheless preserve return value just in |
| 2150 | // case. A bit of debug printing indicates that the first arg |
| 2151 | // is that of the mutex and the second is either zero or one, |
| 2152 | // probably being the recursion mode, therefore. |
| 2153 | // QMutex::QMutex(QMutex::RecursionMode) ("C1ENS" variant) |
| 2154 | QT4_FUNC(void*, _ZN6QMutexC1ENS_13RecursionModeE, |
| 2155 | void* mutex, |
| 2156 | long recmode) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2157 | { |
| 2158 | OrigFn fn; |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2159 | long ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2160 | VALGRIND_GET_ORIG_FN(fn); |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2161 | CALL_FN_W_WW(ret, fn, mutex, recmode); |
| 2162 | // fprintf(stderr, "QMutex constructor 1: %p <- %p %p\n", ret, arg1, arg2); |
| 2163 | DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_MUTEX_INIT_POST, |
| 2164 | void*,mutex, long,1/*mbRec*/); |
| 2165 | return (void*)ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2166 | } |
| 2167 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2168 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2169 | // QMutex::~QMutex() ("D1Ev" variant) |
| 2170 | QT4_FUNC(void*, _ZN6QMutexD1Ev, void* mutex) |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2171 | { |
| 2172 | OrigFn fn; |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2173 | long ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2174 | VALGRIND_GET_ORIG_FN(fn); |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2175 | DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_MUTEX_DESTROY_PRE, |
| 2176 | void*,mutex); |
| 2177 | CALL_FN_W_W(ret, fn, mutex); |
| 2178 | return (void*)ret; |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2179 | } |
| 2180 | |
| 2181 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2182 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2183 | // QMutex::QMutex(QMutex::RecursionMode) ("C2ENS" variant) |
| 2184 | QT4_FUNC(void*, _ZN6QMutexC2ENS_13RecursionModeE, |
| 2185 | void* mutex, |
| 2186 | long recmode) |
| 2187 | { |
| 2188 | assert(0); |
sewardj | 211c253 | 2011-07-12 06:13:08 +0000 | [diff] [blame] | 2189 | /*NOTREACHED*/ |
| 2190 | /* Android's gcc behaves like it doesn't know that assert(0) |
| 2191 | never returns. Hence: */ |
| 2192 | return NULL; |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2193 | } |
| 2194 | |
sewardj | 1c147ff | 2009-07-26 19:52:06 +0000 | [diff] [blame] | 2195 | |
| 2196 | //----------------------------------------------------------- |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2197 | // QMutex::~QMutex() ("D2Ev" variant) |
| 2198 | QT4_FUNC(void*, _ZN6QMutexD2Ev, void* mutex) |
| 2199 | { |
| 2200 | assert(0); |
sewardj | 211c253 | 2011-07-12 06:13:08 +0000 | [diff] [blame] | 2201 | /* Android's gcc behaves like it doesn't know that assert(0) |
| 2202 | never returns. Hence: */ |
| 2203 | return NULL; |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2204 | } |
| 2205 | |
| 2206 | |
| 2207 | // QReadWriteLock is not intercepted directly. See comments |
| 2208 | // above. |
| 2209 | |
| 2210 | //// QReadWriteLock::lockForRead() |
| 2211 | //// _ZN14QReadWriteLock11lockForReadEv == QReadWriteLock::lockForRead() |
| 2212 | //QT4_FUNC(void, ZuZZN14QReadWriteLock11lockForReadEv, |
| 2213 | // // _ZN14QReadWriteLock11lockForReadEv |
| 2214 | // void* self) |
| 2215 | //{ |
| 2216 | // OrigFn fn; |
| 2217 | // VALGRIND_GET_ORIG_FN(fn); |
| 2218 | // if (TRACE_QT4_FNS) { |
| 2219 | // fprintf(stderr, "<< QReadWriteLock::lockForRead %p", self); |
| 2220 | // fflush(stderr); |
| 2221 | // } |
| 2222 | // |
| 2223 | // DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 2224 | // void*,self, |
| 2225 | // long,0/*!isW*/, long,0/*!isTryLock*/); |
| 2226 | // |
| 2227 | // CALL_FN_v_W(fn, self); |
| 2228 | // |
| 2229 | // DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 2230 | // void*,self, long,0/*!isW*/); |
| 2231 | // |
| 2232 | // if (TRACE_QT4_FNS) { |
| 2233 | // fprintf(stderr, " :: Q::lockForRead :: done >>\n"); |
| 2234 | // } |
| 2235 | //} |
| 2236 | // |
| 2237 | //// QReadWriteLock::lockForWrite() |
| 2238 | //// _ZN14QReadWriteLock12lockForWriteEv == QReadWriteLock::lockForWrite() |
| 2239 | //QT4_FUNC(void, ZuZZN14QReadWriteLock12lockForWriteEv, |
| 2240 | // // _ZN14QReadWriteLock12lockForWriteEv |
| 2241 | // void* self) |
| 2242 | //{ |
| 2243 | // OrigFn fn; |
| 2244 | // VALGRIND_GET_ORIG_FN(fn); |
| 2245 | // if (TRACE_QT4_FNS) { |
| 2246 | // fprintf(stderr, "<< QReadWriteLock::lockForWrite %p", self); |
| 2247 | // fflush(stderr); |
| 2248 | // } |
| 2249 | // |
| 2250 | // DO_CREQ_v_WWW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_PRE, |
| 2251 | // void*,self, |
| 2252 | // long,1/*isW*/, long,0/*!isTryLock*/); |
| 2253 | // |
| 2254 | // CALL_FN_v_W(fn, self); |
| 2255 | // |
| 2256 | // DO_CREQ_v_WW(_VG_USERREQ__HG_PTHREAD_RWLOCK_LOCK_POST, |
| 2257 | // void*,self, long,1/*isW*/); |
| 2258 | // |
| 2259 | // if (TRACE_QT4_FNS) { |
| 2260 | // fprintf(stderr, " :: Q::lockForWrite :: done >>\n"); |
| 2261 | // } |
| 2262 | //} |
| 2263 | // |
| 2264 | //// QReadWriteLock::unlock() |
| 2265 | //// _ZN14QReadWriteLock6unlockEv == QReadWriteLock::unlock() |
| 2266 | //QT4_FUNC(void, ZuZZN14QReadWriteLock6unlockEv, |
| 2267 | // // _ZN14QReadWriteLock6unlockEv |
| 2268 | // void* self) |
| 2269 | //{ |
| 2270 | // OrigFn fn; |
| 2271 | // VALGRIND_GET_ORIG_FN(fn); |
| 2272 | // if (TRACE_QT4_FNS) { |
| 2273 | // fprintf(stderr, "<< QReadWriteLock::unlock %p", self); |
| 2274 | // fflush(stderr); |
| 2275 | // } |
| 2276 | // |
| 2277 | // DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_UNLOCK_PRE, |
| 2278 | // void*,self); |
| 2279 | // |
| 2280 | // CALL_FN_v_W(fn, self); |
| 2281 | // |
| 2282 | // DO_CREQ_v_W(_VG_USERREQ__HG_PTHREAD_RWLOCK_UNLOCK_POST, |
| 2283 | // void*,self); |
| 2284 | // |
| 2285 | // if (TRACE_QT4_FNS) { |
| 2286 | // fprintf(stderr, " :: Q::unlock :: done >>\n"); |
| 2287 | // } |
| 2288 | //} |
| 2289 | |
| 2290 | |
| 2291 | /*----------------------------------------------------------------*/ |
| 2292 | /*--- Replacements for basic string functions, that don't ---*/ |
sewardj | b80f0c9 | 2008-11-19 16:33:59 +0000 | [diff] [blame] | 2293 | /*--- overrun the input arrays. ---*/ |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2294 | /*----------------------------------------------------------------*/ |
| 2295 | |
| 2296 | /* Copied verbatim from memcheck/mc_replace_strmem.c. When copying |
| 2297 | new functions, please keep them in the same order as they appear in |
| 2298 | mc_replace_strmem.c. */ |
| 2299 | |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2300 | |
| 2301 | #define STRCHR(soname, fnname) \ |
| 2302 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* s, int c ); \ |
| 2303 | char* VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* s, int c ) \ |
| 2304 | { \ |
| 2305 | UChar ch = (UChar)((UInt)c); \ |
| 2306 | UChar* p = (UChar*)s; \ |
| 2307 | while (True) { \ |
| 2308 | if (*p == ch) return p; \ |
| 2309 | if (*p == 0) return NULL; \ |
| 2310 | p++; \ |
| 2311 | } \ |
| 2312 | } |
| 2313 | |
| 2314 | // Apparently index() is the same thing as strchr() |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2315 | #if defined(VGO_linux) |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2316 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
| 2317 | STRCHR(VG_Z_LIBC_SONAME, index) |
| 2318 | STRCHR(VG_Z_LD_LINUX_SO_2, strchr) |
| 2319 | STRCHR(VG_Z_LD_LINUX_SO_2, index) |
| 2320 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, strchr) |
| 2321 | STRCHR(VG_Z_LD_LINUX_X86_64_SO_2, index) |
| 2322 | #elif defined(VGO_darwin) |
| 2323 | STRCHR(VG_Z_LIBC_SONAME, strchr) |
| 2324 | STRCHR(VG_Z_LIBC_SONAME, index) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2325 | #endif |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2326 | |
| 2327 | |
| 2328 | // Note that this replacement often doesn't get used because gcc inlines |
| 2329 | // calls to strlen() with its own built-in version. This can be very |
| 2330 | // confusing if you aren't expecting it. Other small functions in this file |
| 2331 | // may also be inline by gcc. |
| 2332 | #define STRLEN(soname, fnname) \ |
| 2333 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ); \ |
| 2334 | SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ) \ |
| 2335 | { \ |
| 2336 | SizeT i = 0; \ |
| 2337 | while (str[i] != 0) i++; \ |
| 2338 | return i; \ |
| 2339 | } |
| 2340 | |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2341 | #if defined(VGO_linux) |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2342 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
| 2343 | STRLEN(VG_Z_LD_LINUX_SO_2, strlen) |
| 2344 | STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen) |
| 2345 | #elif defined(VGO_darwin) |
| 2346 | STRLEN(VG_Z_LIBC_SONAME, strlen) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2347 | #endif |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2348 | |
| 2349 | |
| 2350 | #define STRCPY(soname, fnname) \ |
| 2351 | char* VG_REPLACE_FUNCTION_ZU(soname, fnname) ( char* dst, const char* src ); \ |
| 2352 | char* VG_REPLACE_FUNCTION_ZU(soname, fnname) ( char* dst, const char* src ) \ |
| 2353 | { \ |
| 2354 | const Char* dst_orig = dst; \ |
| 2355 | \ |
| 2356 | while (*src) *dst++ = *src++; \ |
| 2357 | *dst = 0; \ |
| 2358 | \ |
| 2359 | return (char*)dst_orig; \ |
| 2360 | } |
| 2361 | |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2362 | #if defined(VGO_linux) |
| 2363 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
| 2364 | #elif defined(VGO_darwin) |
| 2365 | STRCPY(VG_Z_LIBC_SONAME, strcpy) |
| 2366 | #endif |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2367 | |
| 2368 | |
| 2369 | #define STRCMP(soname, fnname) \ |
| 2370 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 2371 | ( const char* s1, const char* s2 ); \ |
| 2372 | int VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 2373 | ( const char* s1, const char* s2 ) \ |
| 2374 | { \ |
| 2375 | register unsigned char c1; \ |
| 2376 | register unsigned char c2; \ |
| 2377 | while (True) { \ |
| 2378 | c1 = *(unsigned char *)s1; \ |
| 2379 | c2 = *(unsigned char *)s2; \ |
| 2380 | if (c1 != c2) break; \ |
| 2381 | if (c1 == 0) break; \ |
| 2382 | s1++; s2++; \ |
| 2383 | } \ |
| 2384 | if ((unsigned char)c1 < (unsigned char)c2) return -1; \ |
| 2385 | if ((unsigned char)c1 > (unsigned char)c2) return 1; \ |
| 2386 | return 0; \ |
| 2387 | } |
| 2388 | |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2389 | #if defined(VGO_linux) |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2390 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
| 2391 | STRCMP(VG_Z_LD_LINUX_X86_64_SO_2, strcmp) |
| 2392 | STRCMP(VG_Z_LD64_SO_1, strcmp) |
| 2393 | #elif defined(VGO_darwin) |
| 2394 | STRCMP(VG_Z_LIBC_SONAME, strcmp) |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2395 | #endif |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2396 | |
| 2397 | |
| 2398 | #define MEMCPY(soname, fnname) \ |
| 2399 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 2400 | ( void *dst, const void *src, SizeT len ); \ |
| 2401 | void* VG_REPLACE_FUNCTION_ZU(soname,fnname) \ |
| 2402 | ( void *dst, const void *src, SizeT len ) \ |
| 2403 | { \ |
| 2404 | register char *d; \ |
| 2405 | register char *s; \ |
| 2406 | \ |
| 2407 | if (len == 0) \ |
| 2408 | return dst; \ |
| 2409 | \ |
| 2410 | if ( dst > src ) { \ |
| 2411 | d = (char *)dst + len - 1; \ |
| 2412 | s = (char *)src + len - 1; \ |
| 2413 | while ( len >= 4 ) { \ |
| 2414 | *d-- = *s--; \ |
| 2415 | *d-- = *s--; \ |
| 2416 | *d-- = *s--; \ |
| 2417 | *d-- = *s--; \ |
| 2418 | len -= 4; \ |
| 2419 | } \ |
| 2420 | while ( len-- ) { \ |
| 2421 | *d-- = *s--; \ |
| 2422 | } \ |
| 2423 | } else if ( dst < src ) { \ |
| 2424 | d = (char *)dst; \ |
| 2425 | s = (char *)src; \ |
| 2426 | while ( len >= 4 ) { \ |
| 2427 | *d++ = *s++; \ |
| 2428 | *d++ = *s++; \ |
| 2429 | *d++ = *s++; \ |
| 2430 | *d++ = *s++; \ |
| 2431 | len -= 4; \ |
| 2432 | } \ |
| 2433 | while ( len-- ) { \ |
| 2434 | *d++ = *s++; \ |
| 2435 | } \ |
| 2436 | } \ |
| 2437 | return dst; \ |
| 2438 | } |
| 2439 | |
njn | b4cfbc4 | 2009-05-04 04:20:02 +0000 | [diff] [blame] | 2440 | #if defined(VGO_linux) |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2441 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) |
| 2442 | MEMCPY(VG_Z_LD_SO_1, memcpy) /* ld.so.1 */ |
| 2443 | MEMCPY(VG_Z_LD64_SO_1, memcpy) /* ld64.so.1 */ |
| 2444 | /* icc9 blats these around all over the place. Not only in the main |
| 2445 | executable but various .so's. They are highly tuned and read |
| 2446 | memory beyond the source boundary (although work correctly and |
| 2447 | never go across page boundaries), so give errors when run |
| 2448 | natively, at least for misaligned source arg. Just intercepting |
| 2449 | in the exe only until we understand more about the problem. See |
| 2450 | http://bugs.kde.org/show_bug.cgi?id=139776 |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2451 | */ |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2452 | MEMCPY(NONE, _intel_fast_memcpy) |
| 2453 | #elif defined(VGO_darwin) |
| 2454 | MEMCPY(VG_Z_LIBC_SONAME, memcpy) |
| 2455 | #endif |
sewardj | 38e0cf9 | 2008-11-19 10:40:56 +0000 | [diff] [blame] | 2456 | |
| 2457 | |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2458 | /*--------------------------------------------------------------------*/ |
sewardj | 3c94445 | 2011-09-05 20:39:57 +0000 | [diff] [blame] | 2459 | /*--- end hg_intercepts.c ---*/ |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 2460 | /*--------------------------------------------------------------------*/ |