Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 1 | #include "thread.h" |
| 2 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 3 | #ifdef DEBUG |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 4 | static int thread_debug = 0; |
| 5 | #define dprintf(args) (thread_debug && printf args) |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 6 | #else |
| 7 | #define dprintf(args) |
| 8 | #endif |
| 9 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 10 | #ifdef __sgi |
| 11 | #include <stdlib.h> |
| 12 | #include <stdio.h> |
| 13 | #include <signal.h> |
| 14 | #include <sys/types.h> |
| 15 | #include <sys/prctl.h> |
| 16 | #include <ulocks.h> |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 17 | #include <errno.h> |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 18 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 19 | #define MAXPROC 100 /* max # of threads that can be started */ |
| 20 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 21 | static usptr_t *shared_arena; |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 22 | static ulock_t count_lock; /* protection for some variables */ |
| 23 | static ulock_t wait_lock; /* lock used to wait for other threads */ |
| 24 | static int waiting_for_threads; /* protected by count_lock */ |
| 25 | static int nthreads; /* protected by count_lock */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 26 | static int exit_status; |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 27 | static int do_exit; /* indicates that the program is to exit */ |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 28 | static int exiting; /* we're already exiting (for maybe_exit) */ |
| 29 | static pid_t my_pid; /* PID of main thread */ |
| 30 | static pid_t pidlist[MAXPROC]; /* PIDs of other threads */ |
| 31 | static int maxpidindex; /* # of PIDs in pidlist */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 32 | #endif |
| 33 | #ifdef sun |
| 34 | #include <lwp/lwp.h> |
| 35 | #include <lwp/stackdep.h> |
| 36 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 37 | #define STACKSIZE 1000 /* stacksize for a thread */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 38 | #define NSTACKS 2 /* # stacks to be put in cache initialy */ |
| 39 | |
| 40 | struct lock { |
| 41 | int lock_locked; |
| 42 | cv_t lock_condvar; |
| 43 | mon_t lock_monitor; |
| 44 | }; |
| 45 | #endif |
| 46 | #ifdef C_THREADS |
| 47 | #include <cthreads.h> |
| 48 | #endif |
| 49 | |
| 50 | #ifdef __STDC__ |
| 51 | #define _P(args) args |
| 52 | #define _P0() (void) |
| 53 | #define _P1(v,t) (t) |
| 54 | #define _P2(v1,t1,v2,t2) (t1,t2) |
| 55 | #else |
| 56 | #define _P(args) () |
| 57 | #define _P0() () |
| 58 | #define _P1(v,t) (v) t; |
| 59 | #define _P2(v1,t1,v2,t2) (v1,v2) t1; t2; |
| 60 | #endif |
| 61 | |
| 62 | static int initialized; |
| 63 | |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 64 | #ifdef __sgi |
| 65 | /* |
| 66 | * This routine is called as a signal handler when another thread |
| 67 | * exits. When that happens, we must see whether we have to exit as |
| 68 | * well (because of an exit_prog()) or whether we should continue on. |
| 69 | */ |
| 70 | static void exit_sig _P0() |
| 71 | { |
| 72 | dprintf(("exit_sig called\n")); |
| 73 | if (exiting && getpid() == my_pid) { |
| 74 | dprintf(("already exiting\n")); |
| 75 | return; |
| 76 | } |
| 77 | if (do_exit) { |
| 78 | dprintf(("exiting in exit_sig\n")); |
| 79 | exit_thread(); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * This routine is called when a process calls exit(). If that wasn't |
| 85 | * done from the library, we do as if an exit_prog() was intended. |
| 86 | */ |
| 87 | static void maybe_exit _P0() |
| 88 | { |
| 89 | dprintf(("maybe_exit called\n")); |
| 90 | if (exiting) { |
| 91 | dprintf(("already exiting\n")); |
| 92 | return; |
| 93 | } |
| 94 | exit_prog(0); |
| 95 | } |
| 96 | #endif |
| 97 | |
| 98 | /* |
| 99 | * Initialization. |
| 100 | */ |
| 101 | void init_thread _P0() |
| 102 | { |
| 103 | #ifdef __sgi |
| 104 | struct sigaction s; |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 105 | #ifdef USE_DL |
| 106 | long addr, size; |
| 107 | #endif |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 108 | #endif |
| 109 | |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 110 | #ifdef DEBUG |
| 111 | thread_debug = getenv("THREADDEBUG") != 0; |
| 112 | #endif |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 113 | if (initialized) |
| 114 | return; |
| 115 | initialized = 1; |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 116 | dprintf(("init_thread called\n")); |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 117 | |
| 118 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 119 | #ifdef USE_DL |
| 120 | if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0) |
| 121 | perror("usconfig - CONF_INITSIZE (check)"); |
| 122 | if (usconfig(CONF_INITSIZE, size) < 0) |
| 123 | perror("usconfig - CONF_INITSIZE (reset)"); |
| 124 | addr = (long) dl_getrange(size + sizeof(ushdr_t)); |
| 125 | dprintf(("trying to use addr %lx-%lx for shared arena\n", addr, addr+size)); |
| 126 | errno = 0; |
| 127 | if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0) |
| 128 | perror("usconfig - CONF_ATTACHADDR (set)"); |
| 129 | #endif |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 130 | if (usconfig(CONF_INITUSERS, 16) < 0) |
| 131 | perror("usconfig - CONF_INITUSERS"); |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 132 | my_pid = getpid(); /* so that we know which is the main thread */ |
| 133 | atexit(maybe_exit); |
| 134 | s.sa_handler = exit_sig; |
| 135 | sigemptyset(&s.sa_mask); |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 136 | /*sigaddset(&s.sa_mask, SIGUSR1);*/ |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 137 | s.sa_flags = 0; |
| 138 | sigaction(SIGUSR1, &s, 0); |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 139 | if (prctl(PR_SETEXITSIG, SIGUSR1) < 0) |
| 140 | perror("prctl - PR_SETEXITSIG"); |
| 141 | if (usconfig(CONF_ARENATYPE, US_SHAREDONLY) < 0) |
| 142 | perror("usconfig - CONF_ARENATYPE"); |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 143 | /*usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);*/ |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 144 | if ((shared_arena = usinit(tmpnam(0))) == 0) |
| 145 | perror("usinit"); |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 146 | #ifdef USE_DL |
| 147 | if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */ |
| 148 | perror("usconfig - CONF_ATTACHADDR (reset)"); |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 149 | #endif |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 150 | if ((count_lock = usnewlock(shared_arena)) == NULL) |
| 151 | perror("usnewlock (count_lock)"); |
| 152 | (void) usinitlock(count_lock); |
| 153 | if ((wait_lock = usnewlock(shared_arena)) == NULL) |
| 154 | perror("usnewlock (wait_lock)"); |
| 155 | dprintf(("arena start: %lx, arena size: %ld\n", (long) shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena))); |
Sjoerd Mullender | aee8bc1 | 1992-09-02 11:25:37 +0000 | [diff] [blame] | 156 | #endif |
| 157 | #ifdef sun |
| 158 | lwp_setstkcache(STACKSIZE, NSTACKS); |
| 159 | #endif |
| 160 | #ifdef C_THREADS |
| 161 | cthread_init(); |
| 162 | #endif |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Thread support. |
| 167 | */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 168 | int start_new_thread _P2(func, void (*func) _P((void *)), arg, void *arg) |
| 169 | { |
| 170 | #ifdef sun |
| 171 | thread_t tid; |
| 172 | #endif |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 173 | #if defined(__sgi) && defined(USE_DL) |
| 174 | long addr, size; |
| 175 | static int local_initialized = 0; |
| 176 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 177 | int success = 0; /* init not needed when SOLARIS and */ |
| 178 | /* C_THREADS implemented properly */ |
| 179 | |
| 180 | dprintf(("start_new_thread called\n")); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 181 | if (!initialized) |
| 182 | init_thread(); |
| 183 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 184 | switch (ussetlock(count_lock)) { |
| 185 | case 0: return 0; |
| 186 | case -1: perror("ussetlock (count_lock)"); |
| 187 | } |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 188 | if (maxpidindex >= MAXPROC) |
| 189 | success = -1; |
| 190 | else { |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 191 | #ifdef USE_DL |
| 192 | if (!local_initialized) { |
| 193 | if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0) |
| 194 | perror("usconfig - CONF_INITSIZE (check)"); |
| 195 | if (usconfig(CONF_INITSIZE, size) < 0) |
| 196 | perror("usconfig - CONF_INITSIZE (reset)"); |
| 197 | addr = (long) dl_getrange(size + sizeof(ushdr_t)); |
| 198 | dprintf(("trying to use addr %lx-%lx for sproc\n", addr, addr+size)); |
| 199 | errno = 0; |
| 200 | if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0) |
| 201 | perror("usconfig - CONF_ATTACHADDR (set)"); |
| 202 | } |
| 203 | #endif |
| 204 | if ((success = sproc(func, PR_SALL, arg)) < 0) |
| 205 | perror("sproc"); |
| 206 | #ifdef USE_DL |
| 207 | if (!local_initialized) { |
| 208 | if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */ |
| 209 | perror("usconfig - CONF_ATTACHADDR (reset)"); |
| 210 | local_initialized = 1; |
| 211 | } |
| 212 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 213 | if (success >= 0) { |
| 214 | nthreads++; |
| 215 | pidlist[maxpidindex++] = success; |
| 216 | } |
| 217 | } |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 218 | if (usunsetlock(count_lock) < 0) |
| 219 | perror("usunsetlock (count_lock)"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 220 | #endif |
| 221 | #ifdef SOLARIS |
| 222 | (void) thread_create(0, 0, func, arg, THREAD_NEW_LWP); |
| 223 | #endif |
| 224 | #ifdef sun |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 225 | success = lwp_create(&tid, func, MINPRIO, 0, lwp_newstk(), 1, arg); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 226 | #endif |
| 227 | #ifdef C_THREADS |
| 228 | (void) cthread_fork(func, arg); |
| 229 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 230 | return success < 0 ? 0 : 1; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 231 | } |
| 232 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 233 | static void do_exit_thread _P1(no_cleanup, int no_cleanup) |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 234 | { |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 235 | dprintf(("exit_thread called\n")); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 236 | if (!initialized) |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 237 | if (no_cleanup) |
| 238 | _exit(0); |
| 239 | else |
| 240 | exit(0); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 241 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 242 | if (ussetlock(count_lock) < 0) |
| 243 | perror("ussetlock (count_lock)"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 244 | nthreads--; |
| 245 | if (getpid() == my_pid) { |
| 246 | /* main thread; wait for other threads to exit */ |
| 247 | exiting = 1; |
| 248 | if (do_exit) { |
| 249 | int i; |
| 250 | |
| 251 | /* notify other threads */ |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 252 | if (nthreads >= 0) { |
| 253 | dprintf(("kill other threads\n")); |
| 254 | for (i = 0; i < maxpidindex; i++) |
| 255 | (void) kill(pidlist[i], SIGKILL); |
| 256 | _exit(exit_status); |
| 257 | } |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 258 | } |
| 259 | waiting_for_threads = 1; |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 260 | if (ussetlock(wait_lock) < 0) |
| 261 | perror("ussetlock (wait_lock)"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 262 | for (;;) { |
| 263 | if (nthreads < 0) { |
| 264 | dprintf(("really exit (%d)\n", exit_status)); |
| 265 | if (no_cleanup) |
| 266 | _exit(exit_status); |
| 267 | else |
| 268 | exit(exit_status); |
| 269 | } |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 270 | if (usunsetlock(count_lock) < 0) |
| 271 | perror("usunsetlock (count_lock)"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 272 | dprintf(("waiting for other threads (%d)\n", nthreads)); |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 273 | if (ussetlock(wait_lock) < 0) |
| 274 | perror("ussetlock (wait_lock)"); |
| 275 | if (ussetlock(count_lock) < 0) |
| 276 | perror("ussetlock (count_lock)"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 277 | } |
| 278 | } |
| 279 | /* not the main thread */ |
| 280 | if (waiting_for_threads) { |
| 281 | dprintf(("main thread is waiting\n")); |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 282 | if (usunsetlock(wait_lock) < 0) |
| 283 | perror("usunsetlock (wait_lock)"); |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 284 | } else if (do_exit) |
| 285 | (void) kill(my_pid, SIGUSR1); |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 286 | if (usunsetlock(count_lock) < 0) |
| 287 | perror("usunsetlock (count_lock)"); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 288 | _exit(0); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 289 | #endif |
| 290 | #ifdef SOLARIS |
| 291 | thread_exit(); |
| 292 | #endif |
| 293 | #ifdef sun |
| 294 | lwp_destroy(SELF); |
| 295 | #endif |
| 296 | #ifdef C_THREADS |
| 297 | cthread_exit(0); |
| 298 | #endif |
| 299 | } |
| 300 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 301 | void exit_thread _P0() |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 302 | { |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 303 | do_exit_thread(0); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 304 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 305 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 306 | void _exit_thread _P0() |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 307 | { |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 308 | do_exit_thread(1); |
| 309 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 310 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 311 | static void do_exit_prog _P2(status, int status, no_cleanup, int no_cleanup) |
| 312 | { |
| 313 | dprintf(("exit_prog(%d) called\n", status)); |
| 314 | if (!initialized) |
| 315 | if (no_cleanup) |
| 316 | _exit(status); |
| 317 | else |
| 318 | exit(status); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 319 | #ifdef __sgi |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 320 | do_exit = 1; |
| 321 | exit_status = status; |
| 322 | do_exit_thread(no_cleanup); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 323 | #endif |
| 324 | #ifdef sun |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 325 | pod_exit(status); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 326 | #endif |
| 327 | } |
| 328 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 329 | void exit_prog _P1(status, int status) |
| 330 | { |
| 331 | do_exit_prog(status, 0); |
| 332 | } |
| 333 | |
| 334 | void _exit_prog _P1(status, int status) |
| 335 | { |
| 336 | do_exit_prog(status, 1); |
| 337 | } |
| 338 | |
| 339 | /* |
| 340 | * Lock support. |
| 341 | */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 342 | type_lock allocate_lock _P0() |
| 343 | { |
| 344 | #ifdef __sgi |
| 345 | ulock_t lock; |
| 346 | #endif |
| 347 | #ifdef sun |
| 348 | struct lock *lock; |
| 349 | extern char *malloc(); |
| 350 | #endif |
| 351 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 352 | dprintf(("allocate_lock called\n")); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 353 | if (!initialized) |
| 354 | init_thread(); |
| 355 | |
| 356 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 357 | if ((lock = usnewlock(shared_arena)) == NULL) |
| 358 | perror("usnewlock"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 359 | (void) usinitlock(lock); |
| 360 | #endif |
| 361 | #ifdef sun |
| 362 | lock = (struct lock *) malloc(sizeof(struct lock)); |
| 363 | lock->lock_locked = 0; |
| 364 | (void) mon_create(&lock->lock_monitor); |
| 365 | (void) cv_create(&lock->lock_condvar, lock->lock_monitor); |
| 366 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 367 | dprintf(("allocate_lock() -> %lx\n", (long)lock)); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 368 | return (type_lock) lock; |
| 369 | } |
| 370 | |
| 371 | void free_lock _P1(lock, type_lock lock) |
| 372 | { |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 373 | dprintf(("free_lock(%lx) called\n", (long)lock)); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 374 | #ifdef __sgi |
| 375 | usfreelock((ulock_t) lock, shared_arena); |
| 376 | #endif |
| 377 | #ifdef sun |
| 378 | mon_destroy(((struct lock *) lock)->lock_monitor); |
| 379 | free((char *) lock); |
| 380 | #endif |
| 381 | } |
| 382 | |
| 383 | int acquire_lock _P2(lock, type_lock lock, waitflag, int waitflag) |
| 384 | { |
| 385 | int success; |
| 386 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 387 | dprintf(("acquire_lock(%lx, %d) called\n", (long)lock, waitflag)); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 388 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 389 | errno = 0; /* clear it just in case */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 390 | if (waitflag) |
| 391 | success = ussetlock((ulock_t) lock); |
| 392 | else |
| 393 | success = uscsetlock((ulock_t) lock, 1); /* Try it once */ |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 394 | if (success < 0) |
| 395 | perror(waitflag ? "ussetlock" : "uscsetlock"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 396 | #endif |
| 397 | #ifdef sun |
| 398 | success = 0; |
| 399 | |
| 400 | (void) mon_enter(((struct lock *) lock)->lock_monitor); |
| 401 | if (waitflag) |
| 402 | while (((struct lock *) lock)->lock_locked) |
| 403 | cv_wait(((struct lock *) lock)->lock_condvar); |
| 404 | if (!((struct lock *) lock)->lock_locked) { |
| 405 | success = 1; |
| 406 | ((struct lock *) lock)->lock_locked = 1; |
| 407 | } |
| 408 | cv_broadcast(((struct lock *) lock)->lock_condvar); |
| 409 | mon_exit(((struct lock *) lock)->lock_monitor); |
| 410 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 411 | dprintf(("acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success)); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 412 | return success; |
| 413 | } |
| 414 | |
| 415 | void release_lock _P1(lock, type_lock lock) |
| 416 | { |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 417 | dprintf(("release_lock(%lx) called\n", (long)lock)); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 418 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 419 | if (usunsetlock((ulock_t) lock) < 0) |
| 420 | perror("usunsetlock"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 421 | #endif |
| 422 | #ifdef sun |
| 423 | (void) mon_enter(((struct lock *) lock)->lock_monitor); |
| 424 | ((struct lock *) lock)->lock_locked = 0; |
| 425 | cv_broadcast(((struct lock *) lock)->lock_condvar); |
| 426 | mon_exit(((struct lock *) lock)->lock_monitor); |
| 427 | #endif |
| 428 | } |
| 429 | |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 430 | /* |
| 431 | * Semaphore support. |
| 432 | */ |
| 433 | type_sema allocate_sema _P1(value, int value) |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 434 | { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 435 | #ifdef __sgi |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 436 | usema_t *sema; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 437 | #endif |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 438 | |
| 439 | dprintf(("allocate_sema called\n")); |
Sjoerd Mullender | d10d829 | 1992-09-11 15:19:27 +0000 | [diff] [blame] | 440 | if (!initialized) |
| 441 | init_thread(); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 442 | |
| 443 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 444 | if ((sema = usnewsema(shared_arena, value)) == NULL) |
| 445 | perror("usnewsema"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 446 | dprintf(("allocate_sema() -> %lx\n", (long) sema)); |
| 447 | return (type_sema) sema; |
| 448 | #endif |
| 449 | } |
| 450 | |
| 451 | void free_sema _P1(sema, type_sema sema) |
| 452 | { |
| 453 | dprintf(("free_sema(%lx) called\n", (long) sema)); |
| 454 | #ifdef __sgi |
| 455 | usfreesema((usema_t *) sema, shared_arena); |
| 456 | #endif |
| 457 | } |
| 458 | |
| 459 | void down_sema _P1(sema, type_sema sema) |
| 460 | { |
| 461 | dprintf(("down_sema(%lx) called\n", (long) sema)); |
| 462 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 463 | if (uspsema((usema_t *) sema) < 0) |
| 464 | perror("uspsema"); |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 465 | #endif |
| 466 | dprintf(("down_sema(%lx) return\n", (long) sema)); |
| 467 | } |
| 468 | |
| 469 | void up_sema _P1(sema, type_sema sema) |
| 470 | { |
| 471 | dprintf(("up_sema(%lx)\n", (long) sema)); |
| 472 | #ifdef __sgi |
Sjoerd Mullender | e893412 | 1993-01-13 12:08:48 +0000 | [diff] [blame^] | 473 | if (usvsema((usema_t *) sema) < 0) |
| 474 | perror("usvsema"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 475 | #endif |
| 476 | } |