Mercurial > hg > CbC > CbC_gcc
annotate gcc/gthr-solaris.h @ 56:3c8a44c06a95
Added tag gcc-4.4.5 for changeset 77e2b8dfacca
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:41:23 +0900 |
| parents | 77e2b8dfacca |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Threads compatibility routines for libgcc2 and libobjc. */ |
| 2 /* Compile this one with gcc. */ | |
| 3 /* Copyright (C) 1997, 1999, 2000, 2004, 2005, 2006, 2008, 2009 | |
| 4 Free Software Foundation, Inc. | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 Under Section 7 of GPL version 3, you are granted additional | |
| 19 permissions described in the GCC Runtime Library Exception, version | |
| 20 3.1, as published by the Free Software Foundation. | |
| 21 | |
| 22 You should have received a copy of the GNU General Public License and | |
| 23 a copy of the GCC Runtime Library Exception along with this program; | |
| 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 25 <http://www.gnu.org/licenses/>. */ | |
| 26 | |
| 27 #ifndef GCC_GTHR_SOLARIS_H | |
| 28 #define GCC_GTHR_SOLARIS_H | |
| 29 | |
| 30 /* Solaris threads as found in Solaris 2.[456]. | |
| 31 Actually these are Unix International (UI) threads, but I don't | |
| 32 know if anyone else implements these. */ | |
| 33 | |
| 34 #define __GTHREADS 1 | |
| 35 | |
| 36 #include <thread.h> | |
| 37 #include <errno.h> | |
| 38 | |
| 39 #ifdef __cplusplus | |
| 40 #define UNUSED(x) | |
| 41 #else | |
| 42 #define UNUSED(x) x __attribute__((unused)) | |
| 43 #endif | |
| 44 | |
| 45 typedef thread_key_t __gthread_key_t; | |
| 46 typedef struct { | |
| 47 mutex_t mutex; | |
| 48 int once; | |
| 49 } __gthread_once_t; | |
| 50 typedef mutex_t __gthread_mutex_t; | |
| 51 | |
| 52 typedef struct { | |
| 53 long depth; | |
| 54 thread_t owner; | |
| 55 mutex_t actual; | |
| 56 } __gthread_recursive_mutex_t; | |
| 57 | |
| 58 #define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 } | |
| 59 #define __GTHREAD_MUTEX_INIT DEFAULTMUTEX | |
| 60 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function | |
| 61 | |
| 62 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 63 # define __gthrw(name) \ | |
| 64 static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); | |
| 65 # define __gthrw_(name) __gthrw_ ## name | |
| 66 #else | |
| 67 # define __gthrw(name) | |
| 68 # define __gthrw_(name) name | |
| 69 #endif | |
| 70 | |
| 71 __gthrw(thr_keycreate) | |
| 72 __gthrw(thr_getspecific) | |
| 73 __gthrw(thr_setspecific) | |
| 74 __gthrw(thr_create) | |
| 75 __gthrw(thr_self) | |
| 76 | |
| 77 __gthrw(mutex_init) | |
| 78 __gthrw(mutex_destroy) | |
| 79 __gthrw(mutex_lock) | |
| 80 __gthrw(mutex_trylock) | |
| 81 __gthrw(mutex_unlock) | |
| 82 | |
| 83 #ifdef _LIBOBJC | |
| 84 __gthrw(thr_exit) | |
| 85 __gthrw(thr_getprio) | |
| 86 __gthrw(thr_setprio) | |
| 87 __gthrw(thr_yield) | |
| 88 | |
| 89 __gthrw(cond_init) | |
| 90 __gthrw(cond_destroy) | |
| 91 __gthrw(cond_wait) | |
| 92 __gthrw(cond_broadcast) | |
| 93 __gthrw(cond_signal) | |
| 94 | |
| 95 #endif | |
| 96 | |
| 97 #if SUPPORTS_WEAK && GTHREAD_USE_WEAK | |
| 98 | |
| 99 /* This will not actually work in Solaris 2.5, since libc contains | |
| 100 dummy symbols of all thr_* routines. */ | |
| 101 | |
| 102 static inline int | |
| 103 __gthread_active_p (void) | |
| 104 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
105 static void *const __gthread_active_ptr |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
106 = __extension__ (void *) &__gthrw_(thr_create); |
| 0 | 107 return __gthread_active_ptr != 0; |
| 108 } | |
| 109 | |
| 110 #else /* not SUPPORTS_WEAK */ | |
| 111 | |
| 112 static inline int | |
| 113 __gthread_active_p (void) | |
| 114 { | |
| 115 return 1; | |
| 116 } | |
| 117 | |
| 118 #endif /* SUPPORTS_WEAK */ | |
| 119 | |
| 120 #ifdef _LIBOBJC | |
| 121 | |
| 122 /* Key structure for maintaining thread specific storage */ | |
| 123 static thread_key_t _objc_thread_storage; | |
| 124 | |
| 125 /* Thread local storage for a single thread */ | |
| 126 static void *thread_local_storage = NULL; | |
| 127 | |
| 128 /* Backend initialization functions */ | |
| 129 | |
| 130 /* Initialize the threads subsystem. */ | |
| 131 static inline int | |
| 132 __gthread_objc_init_thread_system (void) | |
| 133 { | |
| 134 /* Initialize the thread storage key. */ | |
| 135 if (__gthread_active_p () | |
| 136 && __gthrw_(thr_keycreate) (&_objc_thread_storage, NULL) == 0) | |
| 137 return 0; | |
| 138 | |
| 139 return -1; | |
| 140 } | |
| 141 | |
| 142 /* Close the threads subsystem. */ | |
| 143 static inline int | |
| 144 __gthread_objc_close_thread_system (void) | |
| 145 { | |
| 146 if (__gthread_active_p ()) | |
| 147 return 0; | |
| 148 else | |
| 149 return -1; | |
| 150 } | |
| 151 | |
| 152 /* Backend thread functions */ | |
| 153 | |
| 154 /* Create a new thread of execution. */ | |
| 155 static inline objc_thread_t | |
| 156 __gthread_objc_thread_detach (void (*func)(void *), void *arg) | |
| 157 { | |
| 158 objc_thread_t thread_id; | |
| 159 thread_t new_thread_id = 0; | |
| 160 | |
| 161 if (!__gthread_active_p ()) | |
| 162 return NULL; | |
| 163 | |
| 164 if (__gthrw_(thr_create) (NULL, 0, (void *) func, arg, | |
| 165 THR_DETACHED | THR_NEW_LWP, | |
| 166 &new_thread_id) == 0) | |
| 167 thread_id = *(objc_thread_t *) &new_thread_id; | |
| 168 else | |
| 169 thread_id = NULL; | |
| 170 | |
| 171 return thread_id; | |
| 172 } | |
| 173 | |
| 174 /* Set the current thread's priority. */ | |
| 175 static inline int | |
| 176 __gthread_objc_thread_set_priority (int priority) | |
| 177 { | |
| 178 int sys_priority = 0; | |
| 179 | |
| 180 if (!__gthread_active_p ()) | |
| 181 return -1; | |
| 182 | |
| 183 switch (priority) | |
| 184 { | |
| 185 case OBJC_THREAD_INTERACTIVE_PRIORITY: | |
| 186 sys_priority = 300; | |
| 187 break; | |
| 188 default: | |
| 189 case OBJC_THREAD_BACKGROUND_PRIORITY: | |
| 190 sys_priority = 200; | |
| 191 break; | |
| 192 case OBJC_THREAD_LOW_PRIORITY: | |
| 193 sys_priority = 1000; | |
| 194 break; | |
| 195 } | |
| 196 | |
| 197 /* Change priority */ | |
| 198 if (__gthrw_(thr_setprio) (__gthrw_(thr_self) (), sys_priority) == 0) | |
| 199 return 0; | |
| 200 else | |
| 201 return -1; | |
| 202 } | |
| 203 | |
| 204 /* Return the current thread's priority. */ | |
| 205 static inline int | |
| 206 __gthread_objc_thread_get_priority (void) | |
| 207 { | |
| 208 int sys_priority; | |
| 209 | |
| 210 if (!__gthread_active_p ()) | |
| 211 return OBJC_THREAD_INTERACTIVE_PRIORITY; | |
| 212 | |
| 213 if (__gthrw_(thr_getprio) (__gthrw_(thr_self) (), &sys_priority) == 0) | |
| 214 { | |
| 215 if (sys_priority >= 250) | |
| 216 return OBJC_THREAD_INTERACTIVE_PRIORITY; | |
| 217 else if (sys_priority >= 150) | |
| 218 return OBJC_THREAD_BACKGROUND_PRIORITY; | |
| 219 return OBJC_THREAD_LOW_PRIORITY; | |
| 220 } | |
| 221 | |
| 222 /* Couldn't get priority. */ | |
| 223 return -1; | |
| 224 } | |
| 225 | |
| 226 /* Yield our process time to another thread. */ | |
| 227 static inline void | |
| 228 __gthread_objc_thread_yield (void) | |
| 229 { | |
| 230 if (__gthread_active_p ()) | |
| 231 __gthrw_(thr_yield) (); | |
| 232 } | |
| 233 | |
| 234 /* Terminate the current thread. */ | |
| 235 static inline int | |
| 236 __gthread_objc_thread_exit (void) | |
| 237 { | |
| 238 if (__gthread_active_p ()) | |
| 239 /* exit the thread */ | |
| 240 __gthrw_(thr_exit) (&__objc_thread_exit_status); | |
| 241 | |
| 242 /* Failed if we reached here */ | |
| 243 return -1; | |
| 244 } | |
| 245 | |
| 246 /* Returns an integer value which uniquely describes a thread. */ | |
| 247 static inline objc_thread_t | |
| 248 __gthread_objc_thread_id (void) | |
| 249 { | |
| 250 if (__gthread_active_p ()) | |
| 251 return (objc_thread_t) __gthrw_(thr_self) (); | |
| 252 else | |
| 253 return (objc_thread_t) 1; | |
| 254 } | |
| 255 | |
| 256 /* Sets the thread's local storage pointer. */ | |
| 257 static inline int | |
| 258 __gthread_objc_thread_set_data (void *value) | |
| 259 { | |
| 260 if (__gthread_active_p ()) | |
| 261 { | |
| 262 if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0) | |
| 263 return 0; | |
| 264 else | |
| 265 return -1; | |
| 266 } | |
| 267 else | |
| 268 { | |
| 269 thread_local_storage = value; | |
| 270 return 0; | |
| 271 } | |
| 272 } | |
| 273 | |
| 274 /* Returns the thread's local storage pointer. */ | |
| 275 static inline void * | |
| 276 __gthread_objc_thread_get_data (void) | |
| 277 { | |
| 278 void *value = NULL; | |
| 279 | |
| 280 if (__gthread_active_p ()) | |
| 281 { | |
| 282 if (__gthrw_(thr_getspecific) (_objc_thread_storage, &value) == 0) | |
| 283 return value; | |
| 284 else | |
| 285 return NULL; | |
| 286 } | |
| 287 else | |
| 288 return thread_local_storage; | |
| 289 } | |
| 290 | |
| 291 /* Backend mutex functions */ | |
| 292 | |
| 293 /* Allocate a mutex. */ | |
| 294 static inline int | |
| 295 __gthread_objc_mutex_allocate (objc_mutex_t mutex) | |
| 296 { | |
| 297 if (__gthread_active_p () | |
| 298 && __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0)) | |
| 299 return -1; | |
| 300 | |
| 301 return 0; | |
| 302 } | |
| 303 | |
| 304 /* Deallocate a mutex. */ | |
| 305 static inline int | |
| 306 __gthread_objc_mutex_deallocate (objc_mutex_t mutex) | |
| 307 { | |
| 308 if (__gthread_active_p ()) | |
| 309 __gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend))); | |
| 310 | |
| 311 return 0; | |
| 312 } | |
| 313 | |
| 314 /* Grab a lock on a mutex. */ | |
| 315 static inline int | |
| 316 __gthread_objc_mutex_lock (objc_mutex_t mutex) | |
| 317 { | |
| 318 if (__gthread_active_p () | |
| 319 && __gthrw_(mutex_lock) ((mutex_t *) (&(mutex->backend))) != 0) | |
| 320 return -1; | |
| 321 | |
| 322 return 0; | |
| 323 } | |
| 324 | |
| 325 /* Try to grab a lock on a mutex. */ | |
| 326 static inline int | |
| 327 __gthread_objc_mutex_trylock (objc_mutex_t mutex) | |
| 328 { | |
| 329 if (__gthread_active_p () | |
| 330 && __gthrw_(mutex_trylock) ((mutex_t *) (&(mutex->backend))) != 0) | |
| 331 return -1; | |
| 332 | |
| 333 return 0; | |
| 334 } | |
| 335 | |
| 336 /* Unlock the mutex */ | |
| 337 static inline int | |
| 338 __gthread_objc_mutex_unlock (objc_mutex_t mutex) | |
| 339 { | |
| 340 if (__gthread_active_p () | |
| 341 && __gthrw_(mutex_unlock) ((mutex_t *) (&(mutex->backend))) != 0) | |
| 342 return -1; | |
| 343 | |
| 344 return 0; | |
| 345 } | |
| 346 | |
| 347 /* Backend condition mutex functions */ | |
| 348 | |
| 349 /* Allocate a condition. */ | |
| 350 static inline int | |
| 351 __gthread_objc_condition_allocate (objc_condition_t condition) | |
| 352 { | |
| 353 if (__gthread_active_p ()) | |
| 354 return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD, | |
| 355 NULL); | |
| 356 else | |
| 357 return 0; | |
| 358 } | |
| 359 | |
| 360 /* Deallocate a condition. */ | |
| 361 static inline int | |
| 362 __gthread_objc_condition_deallocate (objc_condition_t condition) | |
| 363 { | |
| 364 if (__gthread_active_p ()) | |
| 365 return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend))); | |
| 366 else | |
| 367 return 0; | |
| 368 } | |
| 369 | |
| 370 /* Wait on the condition */ | |
| 371 static inline int | |
| 372 __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) | |
| 373 { | |
| 374 if (__gthread_active_p ()) | |
| 375 return __gthrw_(cond_wait) ((cond_t *) (&(condition->backend)), | |
| 376 (mutex_t *) (&(mutex->backend))); | |
| 377 else | |
| 378 return 0; | |
| 379 } | |
| 380 | |
| 381 /* Wake up all threads waiting on this condition. */ | |
| 382 static inline int | |
| 383 __gthread_objc_condition_broadcast (objc_condition_t condition) | |
| 384 { | |
| 385 if (__gthread_active_p ()) | |
| 386 return __gthrw_(cond_broadcast) ((cond_t *) (&(condition->backend))); | |
| 387 else | |
| 388 return 0; | |
| 389 } | |
| 390 | |
| 391 /* Wake up one thread waiting on this condition. */ | |
| 392 static inline int | |
| 393 __gthread_objc_condition_signal (objc_condition_t condition) | |
| 394 { | |
| 395 if (__gthread_active_p ()) | |
| 396 return __gthrw_(cond_signal) ((cond_t *) (&(condition->backend))); | |
| 397 else | |
| 398 return 0; | |
| 399 } | |
| 400 | |
| 401 #else /* _LIBOBJC */ | |
| 402 | |
| 403 static inline int | |
| 404 __gthread_once (__gthread_once_t *__once, void (*__func) (void)) | |
| 405 { | |
| 406 if (! __gthread_active_p ()) | |
| 407 return -1; | |
| 408 | |
| 409 if (__once == 0 || __func == 0) | |
| 410 return EINVAL; | |
| 411 | |
| 412 if (__once->once == 0) | |
| 413 { | |
| 414 int __status = __gthrw_(mutex_lock) (&__once->mutex); | |
| 415 if (__status != 0) | |
| 416 return __status; | |
| 417 if (__once->once == 0) | |
| 418 { | |
| 419 (*__func) (); | |
| 420 __once->once++; | |
| 421 } | |
| 422 __gthrw_(mutex_unlock) (&__once->mutex); | |
| 423 } | |
| 424 return 0; | |
| 425 } | |
| 426 | |
| 427 static inline int | |
| 428 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) | |
| 429 { | |
| 430 /* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually | |
| 431 got a reasonable key value, and if not, fail. */ | |
| 432 *__key = (__gthread_key_t)-1; | |
| 433 if (__gthrw_(thr_keycreate) (__key, __dtor) != 0 | |
| 434 || *__key == (__gthread_key_t)-1) | |
| 435 return -1; | |
| 436 else | |
| 437 return 0; | |
| 438 } | |
| 439 | |
| 440 static inline int | |
| 441 __gthread_key_delete (__gthread_key_t UNUSED (__key)) | |
| 442 { | |
| 443 /* Not possible. */ | |
| 444 return -1; | |
| 445 } | |
| 446 | |
| 447 static inline void * | |
| 448 __gthread_getspecific (__gthread_key_t __key) | |
| 449 { | |
| 450 void *__ptr; | |
| 451 if (__gthrw_(thr_getspecific) (__key, &__ptr) == 0) | |
| 452 return __ptr; | |
| 453 else | |
| 454 return 0; | |
| 455 } | |
| 456 | |
| 457 static inline int | |
| 458 __gthread_setspecific (__gthread_key_t __key, const void *__ptr) | |
| 459 { | |
| 460 return __gthrw_(thr_setspecific) (__key, (void *) __ptr); | |
| 461 } | |
| 462 | |
| 463 static inline int | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
464 __gthread_mutex_destroy (__gthread_mutex_t *__mutex) |
| 0 | 465 { |
| 466 if (__gthread_active_p ()) | |
| 467 return __gthrw_(mutex_destroy) (__mutex); | |
| 468 else | |
| 469 return 0; | |
| 470 } | |
| 471 | |
| 472 static inline int | |
| 473 __gthread_mutex_lock (__gthread_mutex_t *__mutex) | |
| 474 { | |
| 475 if (__gthread_active_p ()) | |
| 476 return __gthrw_(mutex_lock) (__mutex); | |
| 477 else | |
| 478 return 0; | |
| 479 } | |
| 480 | |
| 481 static inline int | |
| 482 __gthread_mutex_trylock (__gthread_mutex_t *__mutex) | |
| 483 { | |
| 484 if (__gthread_active_p ()) | |
| 485 return __gthrw_(mutex_trylock) (__mutex); | |
| 486 else | |
| 487 return 0; | |
| 488 } | |
| 489 | |
| 490 static inline int | |
| 491 __gthread_mutex_unlock (__gthread_mutex_t *__mutex) | |
| 492 { | |
| 493 if (__gthread_active_p ()) | |
| 494 return __gthrw_(mutex_unlock) (__mutex); | |
| 495 else | |
| 496 return 0; | |
| 497 } | |
| 498 | |
| 499 static inline int | |
| 500 __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) | |
| 501 { | |
| 502 __mutex->depth = 0; | |
| 503 __mutex->owner = (thread_t) 0; | |
| 504 return __gthrw_(mutex_init) (&__mutex->actual, USYNC_THREAD, 0); | |
| 505 } | |
| 506 | |
| 507 static inline int | |
| 508 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) | |
| 509 { | |
| 510 if (__gthread_active_p ()) | |
| 511 { | |
| 512 thread_t __me = __gthrw_(thr_self) (); | |
| 513 | |
| 514 if (__mutex->owner != __me) | |
| 515 { | |
| 516 __gthrw_(mutex_lock) (&__mutex->actual); | |
| 517 __mutex->owner = __me; | |
| 518 } | |
| 519 | |
| 520 __mutex->depth++; | |
| 521 } | |
| 522 return 0; | |
| 523 } | |
| 524 | |
| 525 static inline int | |
| 526 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) | |
| 527 { | |
| 528 if (__gthread_active_p ()) | |
| 529 { | |
| 530 thread_t __me = __gthrw_(thr_self) (); | |
| 531 | |
| 532 if (__mutex->owner != __me) | |
| 533 { | |
| 534 if (__gthrw_(mutex_trylock) (&__mutex->actual)) | |
| 535 return 1; | |
| 536 __mutex->owner = __me; | |
| 537 } | |
| 538 | |
| 539 __mutex->depth++; | |
| 540 } | |
| 541 return 0; | |
| 542 } | |
| 543 | |
| 544 static inline int | |
| 545 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) | |
| 546 { | |
| 547 if (__gthread_active_p ()) | |
| 548 { | |
| 549 if (--__mutex->depth == 0) | |
| 550 { | |
| 551 __mutex->owner = (thread_t) 0; | |
| 552 __gthrw_(mutex_unlock) (&__mutex->actual); | |
| 553 } | |
| 554 } | |
| 555 return 0; | |
| 556 } | |
| 557 | |
| 558 #endif /* _LIBOBJC */ | |
| 559 | |
| 560 #undef UNUSED | |
| 561 | |
| 562 #endif /* ! GCC_GTHR_SOLARIS_H */ |