Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | /* |
| 21 | * Contributors: |
| 22 | * - Thanks for Zetron, Inc. (Phil Torre, ptorre@zetron.com) for donating |
| 23 | * the RTEMS port. |
| 24 | */ |
| 25 | #ifndef _GNU_SOURCE |
| 26 | # define _GNU_SOURCE |
| 27 | #endif |
| 28 | #include <pj/os.h> |
| 29 | #include <pj/assert.h> |
| 30 | #include <pj/pool.h> |
| 31 | #include <pj/log.h> |
| 32 | #include <pj/rand.h> |
| 33 | #include <pj/string.h> |
| 34 | #include <pj/guid.h> |
| 35 | #include <pj/except.h> |
| 36 | #include <pj/errno.h> |
| 37 | |
| 38 | #if defined(PJ_HAS_SEMAPHORE_H) && PJ_HAS_SEMAPHORE_H != 0 |
| 39 | # include <semaphore.h> |
| 40 | #endif |
| 41 | |
| 42 | #include <unistd.h> // getpid() |
| 43 | #include <errno.h> // errno |
| 44 | |
| 45 | #include <pthread.h> |
| 46 | |
| 47 | #define THIS_FILE "os_core_unix.c" |
| 48 | |
| 49 | #define SIGNATURE1 0xDEAFBEEF |
| 50 | #define SIGNATURE2 0xDEADC0DE |
| 51 | |
| 52 | struct pj_thread_t |
| 53 | { |
| 54 | char obj_name[PJ_MAX_OBJ_NAME]; |
| 55 | pthread_t thread; |
| 56 | pj_thread_proc *proc; |
| 57 | void *arg; |
| 58 | pj_uint32_t signature1; |
| 59 | pj_uint32_t signature2; |
| 60 | |
| 61 | pj_mutex_t *suspended_mutex; |
| 62 | |
| 63 | #if defined(PJ_OS_HAS_CHECK_STACK) && PJ_OS_HAS_CHECK_STACK!=0 |
| 64 | pj_uint32_t stk_size; |
| 65 | pj_uint32_t stk_max_usage; |
| 66 | char *stk_start; |
| 67 | const char *caller_file; |
| 68 | int caller_line; |
| 69 | #endif |
| 70 | }; |
| 71 | |
| 72 | struct pj_atomic_t |
| 73 | { |
| 74 | pj_mutex_t *mutex; |
| 75 | pj_atomic_value_t value; |
| 76 | }; |
| 77 | |
| 78 | struct pj_mutex_t |
| 79 | { |
| 80 | pthread_mutex_t mutex; |
| 81 | char obj_name[PJ_MAX_OBJ_NAME]; |
| 82 | #if PJ_DEBUG |
| 83 | int nesting_level; |
| 84 | pj_thread_t *owner; |
| 85 | char owner_name[PJ_MAX_OBJ_NAME]; |
| 86 | #endif |
| 87 | }; |
| 88 | |
| 89 | #if defined(PJ_HAS_SEMAPHORE) && PJ_HAS_SEMAPHORE != 0 |
| 90 | struct pj_sem_t |
| 91 | { |
| 92 | sem_t *sem; |
| 93 | char obj_name[PJ_MAX_OBJ_NAME]; |
| 94 | }; |
| 95 | #endif /* PJ_HAS_SEMAPHORE */ |
| 96 | |
| 97 | #if defined(PJ_HAS_EVENT_OBJ) && PJ_HAS_EVENT_OBJ != 0 |
| 98 | struct pj_event_t |
| 99 | { |
| 100 | enum event_state { |
| 101 | EV_STATE_OFF, |
| 102 | EV_STATE_SET, |
| 103 | EV_STATE_PULSED |
| 104 | } state; |
| 105 | |
| 106 | pj_mutex_t mutex; |
| 107 | pthread_cond_t cond; |
| 108 | |
| 109 | pj_bool_t auto_reset; |
| 110 | unsigned threads_waiting; |
| 111 | unsigned threads_to_release; |
| 112 | }; |
| 113 | #endif /* PJ_HAS_EVENT_OBJ */ |
| 114 | |
| 115 | |
| 116 | /* |
| 117 | * Flag and reference counter for PJLIB instance. |
| 118 | */ |
| 119 | static int initialized; |
| 120 | |
| 121 | #if PJ_HAS_THREADS |
| 122 | static pj_thread_t main_thread; |
| 123 | static long thread_tls_id; |
| 124 | static pj_mutex_t critical_section; |
| 125 | #else |
| 126 | # define MAX_THREADS 32 |
| 127 | static int tls_flag[MAX_THREADS]; |
| 128 | static void *tls[MAX_THREADS]; |
| 129 | #endif |
| 130 | |
| 131 | static unsigned atexit_count; |
| 132 | static void (*atexit_func[32])(void); |
| 133 | |
| 134 | static pj_status_t init_mutex(pj_mutex_t *mutex, const char *name, int type); |
| 135 | |
| 136 | /* |
| 137 | * pj_init(void). |
| 138 | * Init PJLIB! |
| 139 | */ |
| 140 | PJ_DEF(pj_status_t) pj_init(void) |
| 141 | { |
| 142 | char dummy_guid[PJ_GUID_MAX_LENGTH]; |
| 143 | pj_str_t guid; |
| 144 | pj_status_t rc; |
| 145 | |
| 146 | /* Check if PJLIB have been initialized */ |
| 147 | if (initialized) { |
| 148 | ++initialized; |
| 149 | return PJ_SUCCESS; |
| 150 | } |
| 151 | |
| 152 | #if PJ_HAS_THREADS |
| 153 | /* Init this thread's TLS. */ |
| 154 | if ((rc=pj_thread_init()) != 0) { |
| 155 | return rc; |
| 156 | } |
| 157 | |
| 158 | /* Critical section. */ |
| 159 | if ((rc=init_mutex(&critical_section, "critsec", PJ_MUTEX_RECURSE)) != 0) |
| 160 | return rc; |
| 161 | |
| 162 | #endif |
| 163 | |
| 164 | /* Init logging */ |
| 165 | pj_log_init(); |
| 166 | |
| 167 | /* Initialize exception ID for the pool. |
| 168 | * Must do so after critical section is configured. |
| 169 | */ |
| 170 | rc = pj_exception_id_alloc("PJLIB/No memory", &PJ_NO_MEMORY_EXCEPTION); |
| 171 | if (rc != PJ_SUCCESS) |
| 172 | return rc; |
| 173 | |
| 174 | /* Init random seed. */ |
| 175 | /* Or probably not. Let application in charge of this */ |
| 176 | /* pj_srand( clock() ); */ |
| 177 | |
| 178 | /* Startup GUID. */ |
| 179 | guid.ptr = dummy_guid; |
| 180 | pj_generate_unique_string( &guid ); |
| 181 | |
| 182 | /* Startup timestamp */ |
| 183 | #if defined(PJ_HAS_HIGH_RES_TIMER) && PJ_HAS_HIGH_RES_TIMER != 0 |
| 184 | { |
| 185 | pj_timestamp dummy_ts; |
| 186 | if ((rc=pj_get_timestamp(&dummy_ts)) != 0) { |
| 187 | return rc; |
| 188 | } |
| 189 | } |
| 190 | #endif |
| 191 | |
| 192 | /* Flag PJLIB as initialized */ |
| 193 | ++initialized; |
| 194 | pj_assert(initialized == 1); |
| 195 | |
| 196 | PJ_LOG(4,(THIS_FILE, "pjlib %s for POSIX initialized", |
| 197 | PJ_VERSION)); |
| 198 | |
| 199 | return PJ_SUCCESS; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * pj_atexit() |
| 204 | */ |
| 205 | PJ_DEF(pj_status_t) pj_atexit(void (*func)(void)) |
| 206 | { |
| 207 | if (atexit_count >= PJ_ARRAY_SIZE(atexit_func)) |
| 208 | return PJ_ETOOMANY; |
| 209 | |
| 210 | atexit_func[atexit_count++] = func; |
| 211 | return PJ_SUCCESS; |
| 212 | } |
| 213 | |
| 214 | /* |
| 215 | * pj_shutdown(void) |
| 216 | */ |
| 217 | PJ_DEF(void) pj_shutdown() |
| 218 | { |
| 219 | int i; |
| 220 | |
| 221 | /* Only perform shutdown operation when 'initialized' reaches zero */ |
| 222 | pj_assert(initialized > 0); |
| 223 | if (--initialized != 0) |
| 224 | return; |
| 225 | |
| 226 | /* Call atexit() functions */ |
| 227 | for (i=atexit_count-1; i>=0; --i) { |
| 228 | (*atexit_func[i])(); |
| 229 | } |
| 230 | atexit_count = 0; |
| 231 | |
| 232 | /* Free exception ID */ |
| 233 | if (PJ_NO_MEMORY_EXCEPTION != -1) { |
| 234 | pj_exception_id_free(PJ_NO_MEMORY_EXCEPTION); |
| 235 | PJ_NO_MEMORY_EXCEPTION = -1; |
| 236 | } |
| 237 | |
| 238 | #if PJ_HAS_THREADS |
| 239 | /* Destroy PJLIB critical section */ |
| 240 | pj_mutex_destroy(&critical_section); |
| 241 | |
| 242 | /* Free PJLIB TLS */ |
| 243 | if (thread_tls_id != -1) { |
| 244 | pj_thread_local_free(thread_tls_id); |
| 245 | thread_tls_id = -1; |
| 246 | } |
| 247 | |
| 248 | /* Ticket #1132: Assertion when (re)starting PJLIB on different thread */ |
| 249 | pj_bzero(&main_thread, sizeof(main_thread)); |
| 250 | #endif |
| 251 | |
| 252 | /* Clear static variables */ |
| 253 | pj_errno_clear_handlers(); |
| 254 | } |
| 255 | |
| 256 | |
| 257 | /* |
| 258 | * pj_getpid(void) |
| 259 | */ |
| 260 | PJ_DEF(pj_uint32_t) pj_getpid(void) |
| 261 | { |
| 262 | PJ_CHECK_STACK(); |
| 263 | return getpid(); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * Check if this thread has been registered to PJLIB. |
| 268 | */ |
| 269 | PJ_DEF(pj_bool_t) pj_thread_is_registered(void) |
| 270 | { |
| 271 | #if PJ_HAS_THREADS |
| 272 | return pj_thread_local_get(thread_tls_id) != 0; |
| 273 | #else |
| 274 | pj_assert("pj_thread_is_registered() called in non-threading mode!"); |
| 275 | return PJ_TRUE; |
| 276 | #endif |
| 277 | } |
| 278 | |
| 279 | |
| 280 | /* |
| 281 | * Get thread priority value for the thread. |
| 282 | */ |
| 283 | PJ_DEF(int) pj_thread_get_prio(pj_thread_t *thread) |
| 284 | { |
| 285 | #if PJ_HAS_THREADS |
| 286 | struct sched_param param; |
| 287 | int policy; |
| 288 | int rc; |
| 289 | |
| 290 | rc = pthread_getschedparam (thread->thread, &policy, ¶m); |
| 291 | if (rc != 0) |
| 292 | return -1; |
| 293 | |
| 294 | return param.sched_priority; |
| 295 | #else |
| 296 | PJ_UNUSED_ARG(thread); |
| 297 | return 1; |
| 298 | #endif |
| 299 | } |
| 300 | |
| 301 | |
| 302 | /* |
| 303 | * Set the thread priority. |
| 304 | */ |
| 305 | PJ_DEF(pj_status_t) pj_thread_set_prio(pj_thread_t *thread, int prio) |
| 306 | { |
| 307 | #if PJ_HAS_THREADS |
| 308 | struct sched_param param; |
| 309 | int policy; |
| 310 | int rc; |
| 311 | |
| 312 | rc = pthread_getschedparam (thread->thread, &policy, ¶m); |
| 313 | if (rc != 0) |
| 314 | return PJ_RETURN_OS_ERROR(rc); |
| 315 | |
| 316 | param.sched_priority = prio; |
| 317 | |
| 318 | rc = pthread_setschedparam(thread->thread, policy, ¶m); |
| 319 | if (rc != 0) |
| 320 | return PJ_RETURN_OS_ERROR(rc); |
| 321 | |
| 322 | return PJ_SUCCESS; |
| 323 | #else |
| 324 | PJ_UNUSED_ARG(thread); |
| 325 | PJ_UNUSED_ARG(prio); |
| 326 | pj_assert("pj_thread_set_prio() called in non-threading mode!"); |
| 327 | return 1; |
| 328 | #endif |
| 329 | } |
| 330 | |
| 331 | |
| 332 | /* |
| 333 | * Get the lowest priority value available on this system. |
| 334 | */ |
| 335 | PJ_DEF(int) pj_thread_get_prio_min(pj_thread_t *thread) |
| 336 | { |
| 337 | struct sched_param param; |
| 338 | int policy; |
| 339 | int rc; |
| 340 | |
| 341 | rc = pthread_getschedparam(thread->thread, &policy, ¶m); |
| 342 | if (rc != 0) |
| 343 | return -1; |
| 344 | |
| 345 | #if defined(_POSIX_PRIORITY_SCHEDULING) |
| 346 | return sched_get_priority_min(policy); |
| 347 | #elif defined __OpenBSD__ |
| 348 | /* Thread prio min/max are declared in OpenBSD private hdr */ |
| 349 | return 0; |
| 350 | #else |
| 351 | pj_assert("pj_thread_get_prio_min() not supported!"); |
| 352 | return 0; |
| 353 | #endif |
| 354 | } |
| 355 | |
| 356 | |
| 357 | /* |
| 358 | * Get the highest priority value available on this system. |
| 359 | */ |
| 360 | PJ_DEF(int) pj_thread_get_prio_max(pj_thread_t *thread) |
| 361 | { |
| 362 | struct sched_param param; |
| 363 | int policy; |
| 364 | int rc; |
| 365 | |
| 366 | rc = pthread_getschedparam(thread->thread, &policy, ¶m); |
| 367 | if (rc != 0) |
| 368 | return -1; |
| 369 | |
| 370 | #if defined(_POSIX_PRIORITY_SCHEDULING) |
| 371 | return sched_get_priority_max(policy); |
| 372 | #elif defined __OpenBSD__ |
| 373 | /* Thread prio min/max are declared in OpenBSD private hdr */ |
| 374 | return 31; |
| 375 | #else |
| 376 | pj_assert("pj_thread_get_prio_max() not supported!"); |
| 377 | return 0; |
| 378 | #endif |
| 379 | } |
| 380 | |
| 381 | |
| 382 | /* |
| 383 | * Get native thread handle |
| 384 | */ |
| 385 | PJ_DEF(void*) pj_thread_get_os_handle(pj_thread_t *thread) |
| 386 | { |
| 387 | PJ_ASSERT_RETURN(thread, NULL); |
| 388 | |
| 389 | #if PJ_HAS_THREADS |
| 390 | return &thread->thread; |
| 391 | #else |
| 392 | pj_assert("pj_thread_is_registered() called in non-threading mode!"); |
| 393 | return NULL; |
| 394 | #endif |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * pj_thread_register(..) |
| 399 | */ |
| 400 | PJ_DEF(pj_status_t) pj_thread_register ( const char *cstr_thread_name, |
| 401 | pj_thread_desc desc, |
| 402 | pj_thread_t **ptr_thread) |
| 403 | { |
| 404 | #if PJ_HAS_THREADS |
| 405 | char stack_ptr; |
| 406 | pj_status_t rc; |
| 407 | pj_thread_t *thread = (pj_thread_t *)desc; |
| 408 | pj_str_t thread_name = pj_str((char*)cstr_thread_name); |
| 409 | |
| 410 | /* Size sanity check. */ |
| 411 | if (sizeof(pj_thread_desc) < sizeof(pj_thread_t)) { |
| 412 | pj_assert(!"Not enough pj_thread_desc size!"); |
| 413 | return PJ_EBUG; |
| 414 | } |
| 415 | |
| 416 | /* Warn if this thread has been registered before */ |
| 417 | if (pj_thread_local_get (thread_tls_id) != 0) { |
| 418 | // 2006-02-26 bennylp: |
| 419 | // This wouldn't work in all cases!. |
| 420 | // If thread is created by external module (e.g. sound thread), |
| 421 | // thread may be reused while the pool used for the thread descriptor |
| 422 | // has been deleted by application. |
| 423 | //*thread_ptr = (pj_thread_t*)pj_thread_local_get (thread_tls_id); |
| 424 | //return PJ_SUCCESS; |
| 425 | PJ_LOG(4,(THIS_FILE, "Info: possibly re-registering existing " |
| 426 | "thread")); |
| 427 | } |
| 428 | |
| 429 | /* On the other hand, also warn if the thread descriptor buffer seem to |
| 430 | * have been used to register other threads. |
| 431 | */ |
| 432 | pj_assert(thread->signature1 != SIGNATURE1 || |
| 433 | thread->signature2 != SIGNATURE2 || |
| 434 | (thread->thread == pthread_self())); |
| 435 | |
| 436 | /* Initialize and set the thread entry. */ |
| 437 | pj_bzero(desc, sizeof(struct pj_thread_t)); |
| 438 | thread->thread = pthread_self(); |
| 439 | thread->signature1 = SIGNATURE1; |
| 440 | thread->signature2 = SIGNATURE2; |
| 441 | |
| 442 | if(cstr_thread_name && pj_strlen(&thread_name) < sizeof(thread->obj_name)-1) |
| 443 | pj_ansi_snprintf(thread->obj_name, sizeof(thread->obj_name), |
| 444 | cstr_thread_name, thread->thread); |
| 445 | else |
| 446 | pj_ansi_snprintf(thread->obj_name, sizeof(thread->obj_name), |
| 447 | "thr%p", (void*)thread->thread); |
| 448 | |
| 449 | rc = pj_thread_local_set(thread_tls_id, thread); |
| 450 | if (rc != PJ_SUCCESS) { |
| 451 | pj_bzero(desc, sizeof(struct pj_thread_t)); |
| 452 | return rc; |
| 453 | } |
| 454 | |
| 455 | #if defined(PJ_OS_HAS_CHECK_STACK) && PJ_OS_HAS_CHECK_STACK!=0 |
| 456 | thread->stk_start = &stack_ptr; |
| 457 | thread->stk_size = 0xFFFFFFFFUL; |
| 458 | thread->stk_max_usage = 0; |
| 459 | #else |
| 460 | stack_ptr = '\0'; |
| 461 | #endif |
| 462 | |
| 463 | *ptr_thread = thread; |
| 464 | return PJ_SUCCESS; |
| 465 | #else |
| 466 | pj_thread_t *thread = (pj_thread_t*)desc; |
| 467 | *ptr_thread = thread; |
| 468 | return PJ_SUCCESS; |
| 469 | #endif |
| 470 | } |
| 471 | |
| 472 | /* |
| 473 | * pj_thread_init(void) |
| 474 | */ |
| 475 | pj_status_t pj_thread_init(void) |
| 476 | { |
| 477 | #if PJ_HAS_THREADS |
| 478 | pj_status_t rc; |
| 479 | pj_thread_t *dummy; |
| 480 | |
| 481 | rc = pj_thread_local_alloc(&thread_tls_id ); |
| 482 | if (rc != PJ_SUCCESS) { |
| 483 | return rc; |
| 484 | } |
| 485 | return pj_thread_register("thr%p", (long*)&main_thread, &dummy); |
| 486 | #else |
| 487 | PJ_LOG(2,(THIS_FILE, "Thread init error. Threading is not enabled!")); |
| 488 | return PJ_EINVALIDOP; |
| 489 | #endif |
| 490 | } |
| 491 | |
| 492 | #if PJ_HAS_THREADS |
| 493 | /* |
| 494 | * thread_main() |
| 495 | * |
| 496 | * This is the main entry for all threads. |
| 497 | */ |
| 498 | static void *thread_main(void *param) |
| 499 | { |
| 500 | pj_thread_t *rec = (pj_thread_t*)param; |
| 501 | void *result; |
| 502 | pj_status_t rc; |
| 503 | |
| 504 | #if defined(PJ_OS_HAS_CHECK_STACK) && PJ_OS_HAS_CHECK_STACK!=0 |
| 505 | rec->stk_start = (char*)&rec; |
| 506 | #endif |
| 507 | |
| 508 | /* Set current thread id. */ |
| 509 | rc = pj_thread_local_set(thread_tls_id, rec); |
| 510 | if (rc != PJ_SUCCESS) { |
| 511 | pj_assert(!"Thread TLS ID is not set (pj_init() error?)"); |
| 512 | } |
| 513 | |
| 514 | /* Check if suspension is required. */ |
| 515 | if (rec->suspended_mutex) { |
| 516 | pj_mutex_lock(rec->suspended_mutex); |
| 517 | pj_mutex_unlock(rec->suspended_mutex); |
| 518 | } |
| 519 | |
| 520 | PJ_LOG(6,(rec->obj_name, "Thread started")); |
| 521 | |
| 522 | /* Call user's entry! */ |
| 523 | result = (void*)(long)(*rec->proc)(rec->arg); |
| 524 | |
| 525 | /* Done. */ |
| 526 | PJ_LOG(6,(rec->obj_name, "Thread quitting")); |
| 527 | |
| 528 | return result; |
| 529 | } |
| 530 | #endif |
| 531 | |
| 532 | /* |
| 533 | * pj_thread_create(...) |
| 534 | */ |
| 535 | PJ_DEF(pj_status_t) pj_thread_create( pj_pool_t *pool, |
| 536 | const char *thread_name, |
| 537 | pj_thread_proc *proc, |
| 538 | void *arg, |
| 539 | pj_size_t stack_size, |
| 540 | unsigned flags, |
| 541 | pj_thread_t **ptr_thread) |
| 542 | { |
| 543 | #if PJ_HAS_THREADS |
| 544 | pj_thread_t *rec; |
| 545 | pthread_attr_t thread_attr; |
| 546 | void *stack_addr; |
| 547 | int rc; |
| 548 | |
| 549 | PJ_UNUSED_ARG(stack_addr); |
| 550 | |
| 551 | PJ_CHECK_STACK(); |
| 552 | PJ_ASSERT_RETURN(pool && proc && ptr_thread, PJ_EINVAL); |
| 553 | |
| 554 | /* Create thread record and assign name for the thread */ |
| 555 | rec = (struct pj_thread_t*) pj_pool_zalloc(pool, sizeof(pj_thread_t)); |
| 556 | PJ_ASSERT_RETURN(rec, PJ_ENOMEM); |
| 557 | |
| 558 | /* Set name. */ |
| 559 | if (!thread_name) |
| 560 | thread_name = "thr%p"; |
| 561 | |
| 562 | if (strchr(thread_name, '%')) { |
| 563 | pj_ansi_snprintf(rec->obj_name, PJ_MAX_OBJ_NAME, thread_name, rec); |
| 564 | } else { |
| 565 | strncpy(rec->obj_name, thread_name, PJ_MAX_OBJ_NAME); |
| 566 | rec->obj_name[PJ_MAX_OBJ_NAME-1] = '\0'; |
| 567 | } |
| 568 | |
| 569 | /* Set default stack size */ |
| 570 | if (stack_size == 0) |
| 571 | stack_size = PJ_THREAD_DEFAULT_STACK_SIZE; |
| 572 | |
| 573 | #if defined(PJ_OS_HAS_CHECK_STACK) && PJ_OS_HAS_CHECK_STACK!=0 |
| 574 | rec->stk_size = stack_size; |
| 575 | rec->stk_max_usage = 0; |
| 576 | #endif |
| 577 | |
| 578 | /* Emulate suspended thread with mutex. */ |
| 579 | if (flags & PJ_THREAD_SUSPENDED) { |
| 580 | rc = pj_mutex_create_simple(pool, NULL, &rec->suspended_mutex); |
| 581 | if (rc != PJ_SUCCESS) { |
| 582 | return rc; |
| 583 | } |
| 584 | |
| 585 | pj_mutex_lock(rec->suspended_mutex); |
| 586 | } else { |
| 587 | pj_assert(rec->suspended_mutex == NULL); |
| 588 | } |
| 589 | |
| 590 | |
| 591 | /* Init thread attributes */ |
| 592 | pthread_attr_init(&thread_attr); |
| 593 | |
| 594 | #if defined(PJ_THREAD_SET_STACK_SIZE) && PJ_THREAD_SET_STACK_SIZE!=0 |
| 595 | /* Set thread's stack size */ |
| 596 | rc = pthread_attr_setstacksize(&thread_attr, stack_size); |
| 597 | if (rc != 0) |
| 598 | return PJ_RETURN_OS_ERROR(rc); |
| 599 | #endif /* PJ_THREAD_SET_STACK_SIZE */ |
| 600 | |
| 601 | |
| 602 | #if defined(PJ_THREAD_ALLOCATE_STACK) && PJ_THREAD_ALLOCATE_STACK!=0 |
| 603 | /* Allocate memory for the stack */ |
| 604 | stack_addr = pj_pool_alloc(pool, stack_size); |
| 605 | PJ_ASSERT_RETURN(stack_addr, PJ_ENOMEM); |
| 606 | |
| 607 | rc = pthread_attr_setstackaddr(&thread_attr, stack_addr); |
| 608 | if (rc != 0) |
| 609 | return PJ_RETURN_OS_ERROR(rc); |
| 610 | #endif /* PJ_THREAD_ALLOCATE_STACK */ |
| 611 | |
| 612 | |
| 613 | /* Create the thread. */ |
| 614 | rec->proc = proc; |
| 615 | rec->arg = arg; |
| 616 | rc = pthread_create( &rec->thread, &thread_attr, &thread_main, rec); |
| 617 | if (rc != 0) { |
| 618 | return PJ_RETURN_OS_ERROR(rc); |
| 619 | } |
| 620 | |
| 621 | *ptr_thread = rec; |
| 622 | |
| 623 | PJ_LOG(6, (rec->obj_name, "Thread created")); |
| 624 | return PJ_SUCCESS; |
| 625 | #else |
| 626 | pj_assert(!"Threading is disabled!"); |
| 627 | return PJ_EINVALIDOP; |
| 628 | #endif |
| 629 | } |
| 630 | |
| 631 | /* |
| 632 | * pj_thread-get_name() |
| 633 | */ |
| 634 | PJ_DEF(const char*) pj_thread_get_name(pj_thread_t *p) |
| 635 | { |
| 636 | #if PJ_HAS_THREADS |
| 637 | pj_thread_t *rec = (pj_thread_t*)p; |
| 638 | |
| 639 | PJ_CHECK_STACK(); |
| 640 | PJ_ASSERT_RETURN(p, ""); |
| 641 | |
| 642 | return rec->obj_name; |
| 643 | #else |
| 644 | return ""; |
| 645 | #endif |
| 646 | } |
| 647 | |
| 648 | /* |
| 649 | * pj_thread_resume() |
| 650 | */ |
| 651 | PJ_DEF(pj_status_t) pj_thread_resume(pj_thread_t *p) |
| 652 | { |
| 653 | pj_status_t rc; |
| 654 | |
| 655 | PJ_CHECK_STACK(); |
| 656 | PJ_ASSERT_RETURN(p, PJ_EINVAL); |
| 657 | |
| 658 | rc = pj_mutex_unlock(p->suspended_mutex); |
| 659 | |
| 660 | return rc; |
| 661 | } |
| 662 | |
| 663 | /* |
| 664 | * pj_thread_this() |
| 665 | */ |
| 666 | PJ_DEF(pj_thread_t*) pj_thread_this(void) |
| 667 | { |
| 668 | #if PJ_HAS_THREADS |
| 669 | pj_thread_t *rec = (pj_thread_t*)pj_thread_local_get(thread_tls_id); |
| 670 | |
| 671 | if (rec == NULL) { |
| 672 | pj_assert(!"Calling pjlib from unknown/external thread. You must " |
| 673 | "register external threads with pj_thread_register() " |
| 674 | "before calling any pjlib functions."); |
| 675 | } |
| 676 | |
| 677 | /* |
| 678 | * MUST NOT check stack because this function is called |
| 679 | * by PJ_CHECK_STACK() itself!!! |
| 680 | * |
| 681 | */ |
| 682 | |
| 683 | return rec; |
| 684 | #else |
| 685 | pj_assert(!"Threading is not enabled!"); |
| 686 | return NULL; |
| 687 | #endif |
| 688 | } |
| 689 | |
| 690 | /* |
| 691 | * pj_thread_join() |
| 692 | */ |
| 693 | PJ_DEF(pj_status_t) pj_thread_join(pj_thread_t *p) |
| 694 | { |
| 695 | #if PJ_HAS_THREADS |
| 696 | pj_thread_t *rec = (pj_thread_t *)p; |
| 697 | void *ret; |
| 698 | int result; |
| 699 | |
| 700 | PJ_CHECK_STACK(); |
| 701 | |
| 702 | PJ_LOG(6, (pj_thread_this()->obj_name, "Joining thread %s", p->obj_name)); |
| 703 | result = pthread_join( rec->thread, &ret); |
| 704 | |
| 705 | if (result == 0) |
| 706 | return PJ_SUCCESS; |
| 707 | else { |
| 708 | /* Calling pthread_join() on a thread that no longer exists and |
| 709 | * getting back ESRCH isn't an error (in this context). |
| 710 | * Thanks Phil Torre <ptorre@zetron.com>. |
| 711 | */ |
| 712 | return result==ESRCH ? PJ_SUCCESS : PJ_RETURN_OS_ERROR(result); |
| 713 | } |
| 714 | #else |
| 715 | PJ_CHECK_STACK(); |
| 716 | pj_assert(!"No multithreading support!"); |
| 717 | return PJ_EINVALIDOP; |
| 718 | #endif |
| 719 | } |
| 720 | |
| 721 | /* |
| 722 | * pj_thread_destroy() |
| 723 | */ |
| 724 | PJ_DEF(pj_status_t) pj_thread_destroy(pj_thread_t *p) |
| 725 | { |
| 726 | PJ_CHECK_STACK(); |
| 727 | |
| 728 | /* Destroy mutex used to suspend thread */ |
| 729 | if (p->suspended_mutex) { |
| 730 | pj_mutex_destroy(p->suspended_mutex); |
| 731 | p->suspended_mutex = NULL; |
| 732 | } |
| 733 | |
| 734 | return PJ_SUCCESS; |
| 735 | } |
| 736 | |
| 737 | /* |
| 738 | * pj_thread_sleep() |
| 739 | */ |
| 740 | PJ_DEF(pj_status_t) pj_thread_sleep(unsigned msec) |
| 741 | { |
| 742 | /* TODO: should change this to something like PJ_OS_HAS_NANOSLEEP */ |
| 743 | #if defined(PJ_RTEMS) && PJ_RTEMS!=0 |
| 744 | enum { NANOSEC_PER_MSEC = 1000000 }; |
| 745 | struct timespec req; |
| 746 | |
| 747 | PJ_CHECK_STACK(); |
| 748 | req.tv_sec = msec / 1000; |
| 749 | req.tv_nsec = (msec % 1000) * NANOSEC_PER_MSEC; |
| 750 | |
| 751 | if (nanosleep(&req, NULL) == 0) |
| 752 | return PJ_SUCCESS; |
| 753 | |
| 754 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 755 | #else |
| 756 | PJ_CHECK_STACK(); |
| 757 | |
| 758 | pj_set_os_error(0); |
| 759 | |
| 760 | usleep(msec * 1000); |
| 761 | |
| 762 | /* MacOS X (reported on 10.5) seems to always set errno to ETIMEDOUT. |
| 763 | * It does so because usleep() is declared to return int, and we're |
| 764 | * supposed to check for errno only when usleep() returns non-zero. |
| 765 | * Unfortunately, usleep() is declared to return void in other platforms |
| 766 | * so it's not possible to always check for the return value (unless |
| 767 | * we add a detection routine in autoconf). |
| 768 | * |
| 769 | * As a workaround, here we check if ETIMEDOUT is returned and |
| 770 | * return successfully if it is. |
| 771 | */ |
| 772 | if (pj_get_native_os_error() == ETIMEDOUT) |
| 773 | return PJ_SUCCESS; |
| 774 | |
| 775 | return pj_get_os_error(); |
| 776 | |
| 777 | #endif /* PJ_RTEMS */ |
| 778 | } |
| 779 | |
| 780 | #if defined(PJ_OS_HAS_CHECK_STACK) && PJ_OS_HAS_CHECK_STACK!=0 |
| 781 | /* |
| 782 | * pj_thread_check_stack() |
| 783 | * Implementation for PJ_CHECK_STACK() |
| 784 | */ |
| 785 | PJ_DEF(void) pj_thread_check_stack(const char *file, int line) |
| 786 | { |
| 787 | char stk_ptr; |
| 788 | pj_uint32_t usage; |
| 789 | pj_thread_t *thread = pj_thread_this(); |
| 790 | |
| 791 | /* Calculate current usage. */ |
| 792 | usage = (&stk_ptr > thread->stk_start) ? &stk_ptr - thread->stk_start : |
| 793 | thread->stk_start - &stk_ptr; |
| 794 | |
| 795 | /* Assert if stack usage is dangerously high. */ |
| 796 | pj_assert("STACK OVERFLOW!! " && (usage <= thread->stk_size - 128)); |
| 797 | |
| 798 | /* Keep statistic. */ |
| 799 | if (usage > thread->stk_max_usage) { |
| 800 | thread->stk_max_usage = usage; |
| 801 | thread->caller_file = file; |
| 802 | thread->caller_line = line; |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | /* |
| 807 | * pj_thread_get_stack_max_usage() |
| 808 | */ |
| 809 | PJ_DEF(pj_uint32_t) pj_thread_get_stack_max_usage(pj_thread_t *thread) |
| 810 | { |
| 811 | return thread->stk_max_usage; |
| 812 | } |
| 813 | |
| 814 | /* |
| 815 | * pj_thread_get_stack_info() |
| 816 | */ |
| 817 | PJ_DEF(pj_status_t) pj_thread_get_stack_info( pj_thread_t *thread, |
| 818 | const char **file, |
| 819 | int *line ) |
| 820 | { |
| 821 | pj_assert(thread); |
| 822 | |
| 823 | *file = thread->caller_file; |
| 824 | *line = thread->caller_line; |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | #endif /* PJ_OS_HAS_CHECK_STACK */ |
| 829 | |
| 830 | /////////////////////////////////////////////////////////////////////////////// |
| 831 | /* |
| 832 | * pj_atomic_create() |
| 833 | */ |
| 834 | PJ_DEF(pj_status_t) pj_atomic_create( pj_pool_t *pool, |
| 835 | pj_atomic_value_t initial, |
| 836 | pj_atomic_t **ptr_atomic) |
| 837 | { |
| 838 | pj_status_t rc; |
| 839 | pj_atomic_t *atomic_var; |
| 840 | |
| 841 | atomic_var = PJ_POOL_ZALLOC_T(pool, pj_atomic_t); |
| 842 | |
| 843 | PJ_ASSERT_RETURN(atomic_var, PJ_ENOMEM); |
| 844 | |
| 845 | #if PJ_HAS_THREADS |
| 846 | rc = pj_mutex_create(pool, "atm%p", PJ_MUTEX_SIMPLE, &atomic_var->mutex); |
| 847 | if (rc != PJ_SUCCESS) |
| 848 | return rc; |
| 849 | #endif |
| 850 | atomic_var->value = initial; |
| 851 | |
| 852 | *ptr_atomic = atomic_var; |
| 853 | return PJ_SUCCESS; |
| 854 | } |
| 855 | |
| 856 | /* |
| 857 | * pj_atomic_destroy() |
| 858 | */ |
| 859 | PJ_DEF(pj_status_t) pj_atomic_destroy( pj_atomic_t *atomic_var ) |
| 860 | { |
| 861 | PJ_ASSERT_RETURN(atomic_var, PJ_EINVAL); |
| 862 | #if PJ_HAS_THREADS |
| 863 | return pj_mutex_destroy( atomic_var->mutex ); |
| 864 | #else |
| 865 | return 0; |
| 866 | #endif |
| 867 | } |
| 868 | |
| 869 | /* |
| 870 | * pj_atomic_set() |
| 871 | */ |
| 872 | PJ_DEF(void) pj_atomic_set(pj_atomic_t *atomic_var, pj_atomic_value_t value) |
| 873 | { |
| 874 | PJ_CHECK_STACK(); |
| 875 | |
| 876 | #if PJ_HAS_THREADS |
| 877 | pj_mutex_lock( atomic_var->mutex ); |
| 878 | #endif |
| 879 | atomic_var->value = value; |
| 880 | #if PJ_HAS_THREADS |
| 881 | pj_mutex_unlock( atomic_var->mutex); |
| 882 | #endif |
| 883 | } |
| 884 | |
| 885 | /* |
| 886 | * pj_atomic_get() |
| 887 | */ |
| 888 | PJ_DEF(pj_atomic_value_t) pj_atomic_get(pj_atomic_t *atomic_var) |
| 889 | { |
| 890 | pj_atomic_value_t oldval; |
| 891 | |
| 892 | PJ_CHECK_STACK(); |
| 893 | |
| 894 | #if PJ_HAS_THREADS |
| 895 | pj_mutex_lock( atomic_var->mutex ); |
| 896 | #endif |
| 897 | oldval = atomic_var->value; |
| 898 | #if PJ_HAS_THREADS |
| 899 | pj_mutex_unlock( atomic_var->mutex); |
| 900 | #endif |
| 901 | return oldval; |
| 902 | } |
| 903 | |
| 904 | /* |
| 905 | * pj_atomic_inc_and_get() |
| 906 | */ |
| 907 | PJ_DEF(pj_atomic_value_t) pj_atomic_inc_and_get(pj_atomic_t *atomic_var) |
| 908 | { |
| 909 | pj_atomic_value_t new_value; |
| 910 | |
| 911 | PJ_CHECK_STACK(); |
| 912 | |
| 913 | #if PJ_HAS_THREADS |
| 914 | pj_mutex_lock( atomic_var->mutex ); |
| 915 | #endif |
| 916 | new_value = ++atomic_var->value; |
| 917 | #if PJ_HAS_THREADS |
| 918 | pj_mutex_unlock( atomic_var->mutex); |
| 919 | #endif |
| 920 | |
| 921 | return new_value; |
| 922 | } |
| 923 | /* |
| 924 | * pj_atomic_inc() |
| 925 | */ |
| 926 | PJ_DEF(void) pj_atomic_inc(pj_atomic_t *atomic_var) |
| 927 | { |
| 928 | pj_atomic_inc_and_get(atomic_var); |
| 929 | } |
| 930 | |
| 931 | /* |
| 932 | * pj_atomic_dec_and_get() |
| 933 | */ |
| 934 | PJ_DEF(pj_atomic_value_t) pj_atomic_dec_and_get(pj_atomic_t *atomic_var) |
| 935 | { |
| 936 | pj_atomic_value_t new_value; |
| 937 | |
| 938 | PJ_CHECK_STACK(); |
| 939 | |
| 940 | #if PJ_HAS_THREADS |
| 941 | pj_mutex_lock( atomic_var->mutex ); |
| 942 | #endif |
| 943 | new_value = --atomic_var->value; |
| 944 | #if PJ_HAS_THREADS |
| 945 | pj_mutex_unlock( atomic_var->mutex); |
| 946 | #endif |
| 947 | |
| 948 | return new_value; |
| 949 | } |
| 950 | |
| 951 | /* |
| 952 | * pj_atomic_dec() |
| 953 | */ |
| 954 | PJ_DEF(void) pj_atomic_dec(pj_atomic_t *atomic_var) |
| 955 | { |
| 956 | pj_atomic_dec_and_get(atomic_var); |
| 957 | } |
| 958 | |
| 959 | /* |
| 960 | * pj_atomic_add_and_get() |
| 961 | */ |
| 962 | PJ_DEF(pj_atomic_value_t) pj_atomic_add_and_get( pj_atomic_t *atomic_var, |
| 963 | pj_atomic_value_t value ) |
| 964 | { |
| 965 | pj_atomic_value_t new_value; |
| 966 | |
| 967 | #if PJ_HAS_THREADS |
| 968 | pj_mutex_lock(atomic_var->mutex); |
| 969 | #endif |
| 970 | |
| 971 | atomic_var->value += value; |
| 972 | new_value = atomic_var->value; |
| 973 | |
| 974 | #if PJ_HAS_THREADS |
| 975 | pj_mutex_unlock(atomic_var->mutex); |
| 976 | #endif |
| 977 | |
| 978 | return new_value; |
| 979 | } |
| 980 | |
| 981 | /* |
| 982 | * pj_atomic_add() |
| 983 | */ |
| 984 | PJ_DEF(void) pj_atomic_add( pj_atomic_t *atomic_var, |
| 985 | pj_atomic_value_t value ) |
| 986 | { |
| 987 | pj_atomic_add_and_get(atomic_var, value); |
| 988 | } |
| 989 | |
| 990 | /////////////////////////////////////////////////////////////////////////////// |
| 991 | /* |
| 992 | * pj_thread_local_alloc() |
| 993 | */ |
| 994 | PJ_DEF(pj_status_t) pj_thread_local_alloc(long *p_index) |
| 995 | { |
| 996 | #if PJ_HAS_THREADS |
| 997 | pthread_key_t key; |
| 998 | int rc; |
| 999 | |
| 1000 | PJ_ASSERT_RETURN(p_index != NULL, PJ_EINVAL); |
| 1001 | |
| 1002 | pj_assert( sizeof(pthread_key_t) <= sizeof(long)); |
| 1003 | if ((rc=pthread_key_create(&key, NULL)) != 0) |
| 1004 | return PJ_RETURN_OS_ERROR(rc); |
| 1005 | |
| 1006 | *p_index = key; |
| 1007 | return PJ_SUCCESS; |
| 1008 | #else |
| 1009 | int i; |
| 1010 | for (i=0; i<MAX_THREADS; ++i) { |
| 1011 | if (tls_flag[i] == 0) |
| 1012 | break; |
| 1013 | } |
| 1014 | if (i == MAX_THREADS) |
| 1015 | return PJ_ETOOMANY; |
| 1016 | |
| 1017 | tls_flag[i] = 1; |
| 1018 | tls[i] = NULL; |
| 1019 | |
| 1020 | *p_index = i; |
| 1021 | return PJ_SUCCESS; |
| 1022 | #endif |
| 1023 | } |
| 1024 | |
| 1025 | /* |
| 1026 | * pj_thread_local_free() |
| 1027 | */ |
| 1028 | PJ_DEF(void) pj_thread_local_free(long index) |
| 1029 | { |
| 1030 | PJ_CHECK_STACK(); |
| 1031 | #if PJ_HAS_THREADS |
| 1032 | pthread_key_delete(index); |
| 1033 | #else |
| 1034 | tls_flag[index] = 0; |
| 1035 | #endif |
| 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | * pj_thread_local_set() |
| 1040 | */ |
| 1041 | PJ_DEF(pj_status_t) pj_thread_local_set(long index, void *value) |
| 1042 | { |
| 1043 | //Can't check stack because this function is called in the |
| 1044 | //beginning before main thread is initialized. |
| 1045 | //PJ_CHECK_STACK(); |
| 1046 | #if PJ_HAS_THREADS |
| 1047 | int rc=pthread_setspecific(index, value); |
| 1048 | return rc==0 ? PJ_SUCCESS : PJ_RETURN_OS_ERROR(rc); |
| 1049 | #else |
| 1050 | pj_assert(index >= 0 && index < MAX_THREADS); |
| 1051 | tls[index] = value; |
| 1052 | return PJ_SUCCESS; |
| 1053 | #endif |
| 1054 | } |
| 1055 | |
| 1056 | PJ_DEF(void*) pj_thread_local_get(long index) |
| 1057 | { |
| 1058 | //Can't check stack because this function is called |
| 1059 | //by PJ_CHECK_STACK() itself!!! |
| 1060 | //PJ_CHECK_STACK(); |
| 1061 | #if PJ_HAS_THREADS |
| 1062 | return pthread_getspecific(index); |
| 1063 | #else |
| 1064 | pj_assert(index >= 0 && index < MAX_THREADS); |
| 1065 | return tls[index]; |
| 1066 | #endif |
| 1067 | } |
| 1068 | |
| 1069 | /////////////////////////////////////////////////////////////////////////////// |
| 1070 | PJ_DEF(void) pj_enter_critical_section(void) |
| 1071 | { |
| 1072 | #if PJ_HAS_THREADS |
| 1073 | pj_mutex_lock(&critical_section); |
| 1074 | #endif |
| 1075 | } |
| 1076 | |
| 1077 | PJ_DEF(void) pj_leave_critical_section(void) |
| 1078 | { |
| 1079 | #if PJ_HAS_THREADS |
| 1080 | pj_mutex_unlock(&critical_section); |
| 1081 | #endif |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | /////////////////////////////////////////////////////////////////////////////// |
| 1086 | #if defined(PJ_LINUX) && PJ_LINUX!=0 |
| 1087 | PJ_BEGIN_DECL |
| 1088 | PJ_DECL(int) pthread_mutexattr_settype(pthread_mutexattr_t*,int); |
| 1089 | PJ_END_DECL |
| 1090 | #endif |
| 1091 | |
| 1092 | static pj_status_t init_mutex(pj_mutex_t *mutex, const char *name, int type) |
| 1093 | { |
| 1094 | #if PJ_HAS_THREADS |
| 1095 | pthread_mutexattr_t attr; |
| 1096 | int rc; |
| 1097 | |
| 1098 | PJ_CHECK_STACK(); |
| 1099 | |
| 1100 | rc = pthread_mutexattr_init(&attr); |
| 1101 | if (rc != 0) |
| 1102 | return PJ_RETURN_OS_ERROR(rc); |
| 1103 | |
| 1104 | if (type == PJ_MUTEX_SIMPLE) { |
| 1105 | #if (defined(PJ_LINUX) && PJ_LINUX!=0) || \ |
| 1106 | defined(PJ_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
| 1107 | rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_FAST_NP); |
| 1108 | #elif (defined(PJ_RTEMS) && PJ_RTEMS!=0) || \ |
| 1109 | defined(PJ_PTHREAD_MUTEXATTR_T_HAS_RECURSIVE) |
| 1110 | /* Nothing to do, default is simple */ |
| 1111 | #else |
| 1112 | rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL); |
| 1113 | #endif |
| 1114 | } else { |
| 1115 | #if (defined(PJ_LINUX) && PJ_LINUX!=0) || \ |
| 1116 | defined(PJ_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
| 1117 | rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP); |
| 1118 | #elif (defined(PJ_RTEMS) && PJ_RTEMS!=0) || \ |
| 1119 | defined(PJ_PTHREAD_MUTEXATTR_T_HAS_RECURSIVE) |
| 1120 | // Phil Torre <ptorre@zetron.com>: |
| 1121 | // The RTEMS implementation of POSIX mutexes doesn't include |
| 1122 | // pthread_mutexattr_settype(), so what follows is a hack |
| 1123 | // until I get RTEMS patched to support the set/get functions. |
| 1124 | // |
| 1125 | // More info: |
| 1126 | // newlib's pthread also lacks pthread_mutexattr_settype(), |
| 1127 | // but it seems to have mutexattr.recursive. |
| 1128 | PJ_TODO(FIX_RTEMS_RECURSIVE_MUTEX_TYPE) |
| 1129 | attr.recursive = 1; |
| 1130 | #else |
| 1131 | rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); |
| 1132 | #endif |
| 1133 | } |
| 1134 | |
| 1135 | if (rc != 0) { |
| 1136 | return PJ_RETURN_OS_ERROR(rc); |
| 1137 | } |
| 1138 | |
| 1139 | rc = pthread_mutex_init(&mutex->mutex, &attr); |
| 1140 | if (rc != 0) { |
| 1141 | return PJ_RETURN_OS_ERROR(rc); |
| 1142 | } |
| 1143 | |
| 1144 | rc = pthread_mutexattr_destroy(&attr); |
| 1145 | if (rc != 0) { |
| 1146 | pj_status_t status = PJ_RETURN_OS_ERROR(rc); |
| 1147 | pthread_mutex_destroy(&mutex->mutex); |
| 1148 | return status; |
| 1149 | } |
| 1150 | |
| 1151 | #if PJ_DEBUG |
| 1152 | /* Set owner. */ |
| 1153 | mutex->nesting_level = 0; |
| 1154 | mutex->owner = NULL; |
| 1155 | #endif |
| 1156 | |
| 1157 | /* Set name. */ |
| 1158 | if (!name) { |
| 1159 | name = "mtx%p"; |
| 1160 | } |
| 1161 | if (strchr(name, '%')) { |
| 1162 | pj_ansi_snprintf(mutex->obj_name, PJ_MAX_OBJ_NAME, name, mutex); |
| 1163 | } else { |
| 1164 | strncpy(mutex->obj_name, name, PJ_MAX_OBJ_NAME); |
| 1165 | mutex->obj_name[PJ_MAX_OBJ_NAME-1] = '\0'; |
| 1166 | } |
| 1167 | |
| 1168 | PJ_LOG(6, (mutex->obj_name, "Mutex created")); |
| 1169 | return PJ_SUCCESS; |
| 1170 | #else /* PJ_HAS_THREADS */ |
| 1171 | return PJ_SUCCESS; |
| 1172 | #endif |
| 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * pj_mutex_create() |
| 1177 | */ |
| 1178 | PJ_DEF(pj_status_t) pj_mutex_create(pj_pool_t *pool, |
| 1179 | const char *name, |
| 1180 | int type, |
| 1181 | pj_mutex_t **ptr_mutex) |
| 1182 | { |
| 1183 | #if PJ_HAS_THREADS |
| 1184 | pj_status_t rc; |
| 1185 | pj_mutex_t *mutex; |
| 1186 | |
| 1187 | PJ_ASSERT_RETURN(pool && ptr_mutex, PJ_EINVAL); |
| 1188 | |
| 1189 | mutex = PJ_POOL_ALLOC_T(pool, pj_mutex_t); |
| 1190 | PJ_ASSERT_RETURN(mutex, PJ_ENOMEM); |
| 1191 | |
| 1192 | if ((rc=init_mutex(mutex, name, type)) != PJ_SUCCESS) |
| 1193 | return rc; |
| 1194 | |
| 1195 | *ptr_mutex = mutex; |
| 1196 | return PJ_SUCCESS; |
| 1197 | #else /* PJ_HAS_THREADS */ |
| 1198 | *ptr_mutex = (pj_mutex_t*)1; |
| 1199 | return PJ_SUCCESS; |
| 1200 | #endif |
| 1201 | } |
| 1202 | |
| 1203 | /* |
| 1204 | * pj_mutex_create_simple() |
| 1205 | */ |
| 1206 | PJ_DEF(pj_status_t) pj_mutex_create_simple( pj_pool_t *pool, |
| 1207 | const char *name, |
| 1208 | pj_mutex_t **mutex ) |
| 1209 | { |
| 1210 | return pj_mutex_create(pool, name, PJ_MUTEX_SIMPLE, mutex); |
| 1211 | } |
| 1212 | |
| 1213 | /* |
| 1214 | * pj_mutex_create_recursive() |
| 1215 | */ |
| 1216 | PJ_DEF(pj_status_t) pj_mutex_create_recursive( pj_pool_t *pool, |
| 1217 | const char *name, |
| 1218 | pj_mutex_t **mutex ) |
| 1219 | { |
| 1220 | return pj_mutex_create(pool, name, PJ_MUTEX_RECURSE, mutex); |
| 1221 | } |
| 1222 | |
| 1223 | /* |
| 1224 | * pj_mutex_lock() |
| 1225 | */ |
| 1226 | PJ_DEF(pj_status_t) pj_mutex_lock(pj_mutex_t *mutex) |
| 1227 | { |
| 1228 | #if PJ_HAS_THREADS |
| 1229 | pj_status_t status; |
| 1230 | |
| 1231 | PJ_CHECK_STACK(); |
| 1232 | PJ_ASSERT_RETURN(mutex, PJ_EINVAL); |
| 1233 | |
| 1234 | #if PJ_DEBUG |
| 1235 | PJ_LOG(6,(mutex->obj_name, "Mutex: thread %s is waiting (mutex owner=%s)", |
| 1236 | pj_thread_this()->obj_name, |
| 1237 | mutex->owner_name)); |
| 1238 | #else |
| 1239 | PJ_LOG(6,(mutex->obj_name, "Mutex: thread %s is waiting", |
| 1240 | pj_thread_this()->obj_name)); |
| 1241 | #endif |
| 1242 | |
| 1243 | status = pthread_mutex_lock( &mutex->mutex ); |
| 1244 | |
| 1245 | |
| 1246 | #if PJ_DEBUG |
| 1247 | if (status == PJ_SUCCESS) { |
| 1248 | mutex->owner = pj_thread_this(); |
| 1249 | pj_ansi_strcpy(mutex->owner_name, mutex->owner->obj_name); |
| 1250 | ++mutex->nesting_level; |
| 1251 | } |
| 1252 | |
| 1253 | PJ_LOG(6,(mutex->obj_name, |
| 1254 | (status==0 ? |
| 1255 | "Mutex acquired by thread %s (level=%d)" : |
| 1256 | "Mutex acquisition FAILED by %s (level=%d)"), |
| 1257 | pj_thread_this()->obj_name, |
| 1258 | mutex->nesting_level)); |
| 1259 | #else |
| 1260 | PJ_LOG(6,(mutex->obj_name, |
| 1261 | (status==0 ? "Mutex acquired by thread %s" : "FAILED by %s"), |
| 1262 | pj_thread_this()->obj_name)); |
| 1263 | #endif |
| 1264 | |
| 1265 | if (status == 0) |
| 1266 | return PJ_SUCCESS; |
| 1267 | else |
| 1268 | return PJ_RETURN_OS_ERROR(status); |
| 1269 | #else /* PJ_HAS_THREADS */ |
| 1270 | pj_assert( mutex == (pj_mutex_t*)1 ); |
| 1271 | return PJ_SUCCESS; |
| 1272 | #endif |
| 1273 | } |
| 1274 | |
| 1275 | /* |
| 1276 | * pj_mutex_unlock() |
| 1277 | */ |
| 1278 | PJ_DEF(pj_status_t) pj_mutex_unlock(pj_mutex_t *mutex) |
| 1279 | { |
| 1280 | #if PJ_HAS_THREADS |
| 1281 | pj_status_t status; |
| 1282 | |
| 1283 | PJ_CHECK_STACK(); |
| 1284 | PJ_ASSERT_RETURN(mutex, PJ_EINVAL); |
| 1285 | |
| 1286 | #if PJ_DEBUG |
| 1287 | pj_assert(mutex->owner == pj_thread_this()); |
| 1288 | if (--mutex->nesting_level == 0) { |
| 1289 | mutex->owner = NULL; |
| 1290 | mutex->owner_name[0] = '\0'; |
| 1291 | } |
| 1292 | |
| 1293 | PJ_LOG(6,(mutex->obj_name, "Mutex released by thread %s (level=%d)", |
| 1294 | pj_thread_this()->obj_name, |
| 1295 | mutex->nesting_level)); |
| 1296 | #else |
| 1297 | PJ_LOG(6,(mutex->obj_name, "Mutex released by thread %s", |
| 1298 | pj_thread_this()->obj_name)); |
| 1299 | #endif |
| 1300 | |
| 1301 | status = pthread_mutex_unlock( &mutex->mutex ); |
| 1302 | if (status == 0) |
| 1303 | return PJ_SUCCESS; |
| 1304 | else |
| 1305 | return PJ_RETURN_OS_ERROR(status); |
| 1306 | |
| 1307 | #else /* PJ_HAS_THREADS */ |
| 1308 | pj_assert( mutex == (pj_mutex_t*)1 ); |
| 1309 | return PJ_SUCCESS; |
| 1310 | #endif |
| 1311 | } |
| 1312 | |
| 1313 | /* |
| 1314 | * pj_mutex_trylock() |
| 1315 | */ |
| 1316 | PJ_DEF(pj_status_t) pj_mutex_trylock(pj_mutex_t *mutex) |
| 1317 | { |
| 1318 | #if PJ_HAS_THREADS |
| 1319 | int status; |
| 1320 | |
| 1321 | PJ_CHECK_STACK(); |
| 1322 | PJ_ASSERT_RETURN(mutex, PJ_EINVAL); |
| 1323 | |
| 1324 | PJ_LOG(6,(mutex->obj_name, "Mutex: thread %s is trying", |
| 1325 | pj_thread_this()->obj_name)); |
| 1326 | |
| 1327 | status = pthread_mutex_trylock( &mutex->mutex ); |
| 1328 | |
| 1329 | if (status==0) { |
| 1330 | #if PJ_DEBUG |
| 1331 | mutex->owner = pj_thread_this(); |
| 1332 | pj_ansi_strcpy(mutex->owner_name, mutex->owner->obj_name); |
| 1333 | ++mutex->nesting_level; |
| 1334 | |
| 1335 | PJ_LOG(6,(mutex->obj_name, "Mutex acquired by thread %s (level=%d)", |
| 1336 | pj_thread_this()->obj_name, |
| 1337 | mutex->nesting_level)); |
| 1338 | #else |
| 1339 | PJ_LOG(6,(mutex->obj_name, "Mutex acquired by thread %s", |
| 1340 | pj_thread_this()->obj_name)); |
| 1341 | #endif |
| 1342 | } else { |
| 1343 | PJ_LOG(6,(mutex->obj_name, "Mutex: thread %s's trylock() failed", |
| 1344 | pj_thread_this()->obj_name)); |
| 1345 | } |
| 1346 | |
| 1347 | if (status==0) |
| 1348 | return PJ_SUCCESS; |
| 1349 | else |
| 1350 | return PJ_RETURN_OS_ERROR(status); |
| 1351 | #else /* PJ_HAS_THREADS */ |
| 1352 | pj_assert( mutex == (pj_mutex_t*)1); |
| 1353 | return PJ_SUCCESS; |
| 1354 | #endif |
| 1355 | } |
| 1356 | |
| 1357 | /* |
| 1358 | * pj_mutex_destroy() |
| 1359 | */ |
| 1360 | PJ_DEF(pj_status_t) pj_mutex_destroy(pj_mutex_t *mutex) |
| 1361 | { |
| 1362 | enum { RETRY = 4 }; |
| 1363 | int status = 0; |
| 1364 | unsigned retry; |
| 1365 | |
| 1366 | PJ_CHECK_STACK(); |
| 1367 | PJ_ASSERT_RETURN(mutex, PJ_EINVAL); |
| 1368 | |
| 1369 | #if PJ_HAS_THREADS |
| 1370 | PJ_LOG(6,(mutex->obj_name, "Mutex destroyed by thread %s", |
| 1371 | pj_thread_this()->obj_name)); |
| 1372 | |
| 1373 | for (retry=0; retry<RETRY; ++retry) { |
| 1374 | status = pthread_mutex_destroy( &mutex->mutex ); |
| 1375 | if (status == PJ_SUCCESS) |
| 1376 | break; |
| 1377 | else if (retry<RETRY-1 && status == EBUSY) |
| 1378 | pthread_mutex_unlock(&mutex->mutex); |
| 1379 | } |
| 1380 | |
| 1381 | if (status == 0) |
| 1382 | return PJ_SUCCESS; |
| 1383 | else { |
| 1384 | return PJ_RETURN_OS_ERROR(status); |
| 1385 | } |
| 1386 | #else |
| 1387 | pj_assert( mutex == (pj_mutex_t*)1 ); |
| 1388 | status = PJ_SUCCESS; |
| 1389 | return status; |
| 1390 | #endif |
| 1391 | } |
| 1392 | |
| 1393 | #if PJ_DEBUG |
| 1394 | PJ_DEF(pj_bool_t) pj_mutex_is_locked(pj_mutex_t *mutex) |
| 1395 | { |
| 1396 | #if PJ_HAS_THREADS |
| 1397 | return mutex->owner == pj_thread_this(); |
| 1398 | #else |
| 1399 | return 1; |
| 1400 | #endif |
| 1401 | } |
| 1402 | #endif |
| 1403 | |
| 1404 | /////////////////////////////////////////////////////////////////////////////// |
| 1405 | /* |
| 1406 | * Include Read/Write mutex emulation for POSIX platforms that lack it (e.g. |
| 1407 | * RTEMS). Otherwise use POSIX rwlock. |
| 1408 | */ |
| 1409 | #if defined(PJ_EMULATE_RWMUTEX) && PJ_EMULATE_RWMUTEX!=0 |
| 1410 | /* We need semaphore functionality to emulate rwmutex */ |
| 1411 | # if !defined(PJ_HAS_SEMAPHORE) || PJ_HAS_SEMAPHORE==0 |
| 1412 | # error "Semaphore support needs to be enabled to emulate rwmutex" |
| 1413 | # endif |
| 1414 | # include "os_rwmutex.c" |
| 1415 | #else |
| 1416 | struct pj_rwmutex_t |
| 1417 | { |
| 1418 | pthread_rwlock_t rwlock; |
| 1419 | }; |
| 1420 | |
| 1421 | PJ_DEF(pj_status_t) pj_rwmutex_create(pj_pool_t *pool, const char *name, |
| 1422 | pj_rwmutex_t **p_mutex) |
| 1423 | { |
| 1424 | pj_rwmutex_t *rwm; |
| 1425 | pj_status_t status; |
| 1426 | |
| 1427 | PJ_UNUSED_ARG(name); |
| 1428 | |
| 1429 | rwm = PJ_POOL_ALLOC_T(pool, pj_rwmutex_t); |
| 1430 | PJ_ASSERT_RETURN(rwm, PJ_ENOMEM); |
| 1431 | |
| 1432 | status = pthread_rwlock_init(&rwm->rwlock, NULL); |
| 1433 | if (status != 0) |
| 1434 | return PJ_RETURN_OS_ERROR(status); |
| 1435 | |
| 1436 | *p_mutex = rwm; |
| 1437 | return PJ_SUCCESS; |
| 1438 | } |
| 1439 | |
| 1440 | /* |
| 1441 | * Lock the mutex for reading. |
| 1442 | * |
| 1443 | */ |
| 1444 | PJ_DEF(pj_status_t) pj_rwmutex_lock_read(pj_rwmutex_t *mutex) |
| 1445 | { |
| 1446 | pj_status_t status; |
| 1447 | |
| 1448 | status = pthread_rwlock_rdlock(&mutex->rwlock); |
| 1449 | if (status != 0) |
| 1450 | return PJ_RETURN_OS_ERROR(status); |
| 1451 | |
| 1452 | return PJ_SUCCESS; |
| 1453 | } |
| 1454 | |
| 1455 | /* |
| 1456 | * Lock the mutex for writing. |
| 1457 | * |
| 1458 | */ |
| 1459 | PJ_DEF(pj_status_t) pj_rwmutex_lock_write(pj_rwmutex_t *mutex) |
| 1460 | { |
| 1461 | pj_status_t status; |
| 1462 | |
| 1463 | status = pthread_rwlock_wrlock(&mutex->rwlock); |
| 1464 | if (status != 0) |
| 1465 | return PJ_RETURN_OS_ERROR(status); |
| 1466 | |
| 1467 | return PJ_SUCCESS; |
| 1468 | } |
| 1469 | |
| 1470 | /* |
| 1471 | * Release read lock. |
| 1472 | * |
| 1473 | */ |
| 1474 | PJ_DEF(pj_status_t) pj_rwmutex_unlock_read(pj_rwmutex_t *mutex) |
| 1475 | { |
| 1476 | return pj_rwmutex_unlock_write(mutex); |
| 1477 | } |
| 1478 | |
| 1479 | /* |
| 1480 | * Release write lock. |
| 1481 | * |
| 1482 | */ |
| 1483 | PJ_DEF(pj_status_t) pj_rwmutex_unlock_write(pj_rwmutex_t *mutex) |
| 1484 | { |
| 1485 | pj_status_t status; |
| 1486 | |
| 1487 | status = pthread_rwlock_unlock(&mutex->rwlock); |
| 1488 | if (status != 0) |
| 1489 | return PJ_RETURN_OS_ERROR(status); |
| 1490 | |
| 1491 | return PJ_SUCCESS; |
| 1492 | } |
| 1493 | |
| 1494 | /* |
| 1495 | * Destroy reader/writer mutex. |
| 1496 | * |
| 1497 | */ |
| 1498 | PJ_DEF(pj_status_t) pj_rwmutex_destroy(pj_rwmutex_t *mutex) |
| 1499 | { |
| 1500 | pj_status_t status; |
| 1501 | |
| 1502 | status = pthread_rwlock_destroy(&mutex->rwlock); |
| 1503 | if (status != 0) |
| 1504 | return PJ_RETURN_OS_ERROR(status); |
| 1505 | |
| 1506 | return PJ_SUCCESS; |
| 1507 | } |
| 1508 | |
| 1509 | #endif /* PJ_EMULATE_RWMUTEX */ |
| 1510 | |
| 1511 | |
| 1512 | /////////////////////////////////////////////////////////////////////////////// |
| 1513 | #if defined(PJ_HAS_SEMAPHORE) && PJ_HAS_SEMAPHORE != 0 |
| 1514 | |
| 1515 | /* |
| 1516 | * pj_sem_create() |
| 1517 | */ |
| 1518 | PJ_DEF(pj_status_t) pj_sem_create( pj_pool_t *pool, |
| 1519 | const char *name, |
| 1520 | unsigned initial, |
| 1521 | unsigned max, |
| 1522 | pj_sem_t **ptr_sem) |
| 1523 | { |
| 1524 | #if PJ_HAS_THREADS |
| 1525 | pj_sem_t *sem; |
| 1526 | |
| 1527 | PJ_CHECK_STACK(); |
| 1528 | PJ_ASSERT_RETURN(pool != NULL && ptr_sem != NULL, PJ_EINVAL); |
| 1529 | |
| 1530 | sem = PJ_POOL_ALLOC_T(pool, pj_sem_t); |
| 1531 | PJ_ASSERT_RETURN(sem, PJ_ENOMEM); |
| 1532 | |
| 1533 | #if defined(PJ_DARWINOS) && PJ_DARWINOS!=0 |
| 1534 | /* MacOS X doesn't support anonymous semaphore */ |
| 1535 | { |
| 1536 | char sem_name[PJ_GUID_MAX_LENGTH+1]; |
| 1537 | pj_str_t nam; |
| 1538 | |
| 1539 | /* We should use SEM_NAME_LEN, but this doesn't seem to be |
| 1540 | * declared anywhere? The value here is just from trial and error |
| 1541 | * to get the longest name supported. |
| 1542 | */ |
| 1543 | # define MAX_SEM_NAME_LEN 23 |
| 1544 | |
| 1545 | /* Create a unique name for the semaphore. */ |
| 1546 | if (PJ_GUID_STRING_LENGTH <= MAX_SEM_NAME_LEN) { |
| 1547 | nam.ptr = sem_name; |
| 1548 | pj_generate_unique_string(&nam); |
| 1549 | sem_name[nam.slen] = '\0'; |
| 1550 | } else { |
| 1551 | pj_create_random_string(sem_name, MAX_SEM_NAME_LEN); |
| 1552 | sem_name[MAX_SEM_NAME_LEN] = '\0'; |
| 1553 | } |
| 1554 | |
| 1555 | /* Create semaphore */ |
| 1556 | sem->sem = sem_open(sem_name, O_CREAT|O_EXCL, S_IRUSR|S_IWUSR, |
| 1557 | initial); |
| 1558 | if (sem->sem == SEM_FAILED) |
| 1559 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1560 | |
| 1561 | /* And immediately release the name as we don't need it */ |
| 1562 | sem_unlink(sem_name); |
| 1563 | } |
| 1564 | #else |
| 1565 | sem->sem = PJ_POOL_ALLOC_T(pool, sem_t); |
| 1566 | if (sem_init( sem->sem, 0, initial) != 0) |
| 1567 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1568 | #endif |
| 1569 | |
| 1570 | /* Set name. */ |
| 1571 | if (!name) { |
| 1572 | name = "sem%p"; |
| 1573 | } |
| 1574 | if (strchr(name, '%')) { |
| 1575 | pj_ansi_snprintf(sem->obj_name, PJ_MAX_OBJ_NAME, name, sem); |
| 1576 | } else { |
| 1577 | strncpy(sem->obj_name, name, PJ_MAX_OBJ_NAME); |
| 1578 | sem->obj_name[PJ_MAX_OBJ_NAME-1] = '\0'; |
| 1579 | } |
| 1580 | |
| 1581 | PJ_LOG(6, (sem->obj_name, "Semaphore created")); |
| 1582 | |
| 1583 | *ptr_sem = sem; |
| 1584 | return PJ_SUCCESS; |
| 1585 | #else |
| 1586 | *ptr_sem = (pj_sem_t*)1; |
| 1587 | return PJ_SUCCESS; |
| 1588 | #endif |
| 1589 | } |
| 1590 | |
| 1591 | /* |
| 1592 | * pj_sem_wait() |
| 1593 | */ |
| 1594 | PJ_DEF(pj_status_t) pj_sem_wait(pj_sem_t *sem) |
| 1595 | { |
| 1596 | #if PJ_HAS_THREADS |
| 1597 | int result; |
| 1598 | |
| 1599 | PJ_CHECK_STACK(); |
| 1600 | PJ_ASSERT_RETURN(sem, PJ_EINVAL); |
| 1601 | |
| 1602 | PJ_LOG(6, (sem->obj_name, "Semaphore: thread %s is waiting", |
| 1603 | pj_thread_this()->obj_name)); |
| 1604 | |
| 1605 | result = sem_wait( sem->sem ); |
| 1606 | |
| 1607 | if (result == 0) { |
| 1608 | PJ_LOG(6, (sem->obj_name, "Semaphore acquired by thread %s", |
| 1609 | pj_thread_this()->obj_name)); |
| 1610 | } else { |
| 1611 | PJ_LOG(6, (sem->obj_name, "Semaphore: thread %s FAILED to acquire", |
| 1612 | pj_thread_this()->obj_name)); |
| 1613 | } |
| 1614 | |
| 1615 | if (result == 0) |
| 1616 | return PJ_SUCCESS; |
| 1617 | else |
| 1618 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1619 | #else |
| 1620 | pj_assert( sem == (pj_sem_t*) 1 ); |
| 1621 | return PJ_SUCCESS; |
| 1622 | #endif |
| 1623 | } |
| 1624 | |
| 1625 | /* |
| 1626 | * pj_sem_trywait() |
| 1627 | */ |
| 1628 | PJ_DEF(pj_status_t) pj_sem_trywait(pj_sem_t *sem) |
| 1629 | { |
| 1630 | #if PJ_HAS_THREADS |
| 1631 | int result; |
| 1632 | |
| 1633 | PJ_CHECK_STACK(); |
| 1634 | PJ_ASSERT_RETURN(sem, PJ_EINVAL); |
| 1635 | |
| 1636 | result = sem_trywait( sem->sem ); |
| 1637 | |
| 1638 | if (result == 0) { |
| 1639 | PJ_LOG(6, (sem->obj_name, "Semaphore acquired by thread %s", |
| 1640 | pj_thread_this()->obj_name)); |
| 1641 | } |
| 1642 | if (result == 0) |
| 1643 | return PJ_SUCCESS; |
| 1644 | else |
| 1645 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1646 | #else |
| 1647 | pj_assert( sem == (pj_sem_t*)1 ); |
| 1648 | return PJ_SUCCESS; |
| 1649 | #endif |
| 1650 | } |
| 1651 | |
| 1652 | /* |
| 1653 | * pj_sem_post() |
| 1654 | */ |
| 1655 | PJ_DEF(pj_status_t) pj_sem_post(pj_sem_t *sem) |
| 1656 | { |
| 1657 | #if PJ_HAS_THREADS |
| 1658 | int result; |
| 1659 | PJ_LOG(6, (sem->obj_name, "Semaphore released by thread %s", |
| 1660 | pj_thread_this()->obj_name)); |
| 1661 | result = sem_post( sem->sem ); |
| 1662 | |
| 1663 | if (result == 0) |
| 1664 | return PJ_SUCCESS; |
| 1665 | else |
| 1666 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1667 | #else |
| 1668 | pj_assert( sem == (pj_sem_t*) 1); |
| 1669 | return PJ_SUCCESS; |
| 1670 | #endif |
| 1671 | } |
| 1672 | |
| 1673 | /* |
| 1674 | * pj_sem_destroy() |
| 1675 | */ |
| 1676 | PJ_DEF(pj_status_t) pj_sem_destroy(pj_sem_t *sem) |
| 1677 | { |
| 1678 | #if PJ_HAS_THREADS |
| 1679 | int result; |
| 1680 | |
| 1681 | PJ_CHECK_STACK(); |
| 1682 | PJ_ASSERT_RETURN(sem, PJ_EINVAL); |
| 1683 | |
| 1684 | PJ_LOG(6, (sem->obj_name, "Semaphore destroyed by thread %s", |
| 1685 | pj_thread_this()->obj_name)); |
| 1686 | #if defined(PJ_DARWINOS) && PJ_DARWINOS!=0 |
| 1687 | result = sem_close( sem->sem ); |
| 1688 | #else |
| 1689 | result = sem_destroy( sem->sem ); |
| 1690 | #endif |
| 1691 | |
| 1692 | if (result == 0) |
| 1693 | return PJ_SUCCESS; |
| 1694 | else |
| 1695 | return PJ_RETURN_OS_ERROR(pj_get_native_os_error()); |
| 1696 | #else |
| 1697 | pj_assert( sem == (pj_sem_t*) 1 ); |
| 1698 | return PJ_SUCCESS; |
| 1699 | #endif |
| 1700 | } |
| 1701 | |
| 1702 | #endif /* PJ_HAS_SEMAPHORE */ |
| 1703 | |
| 1704 | /////////////////////////////////////////////////////////////////////////////// |
| 1705 | #if defined(PJ_HAS_EVENT_OBJ) && PJ_HAS_EVENT_OBJ != 0 |
| 1706 | |
| 1707 | /* |
| 1708 | * pj_event_create() |
| 1709 | */ |
| 1710 | PJ_DEF(pj_status_t) pj_event_create(pj_pool_t *pool, const char *name, |
| 1711 | pj_bool_t manual_reset, pj_bool_t initial, |
| 1712 | pj_event_t **ptr_event) |
| 1713 | { |
| 1714 | pj_event_t *event; |
| 1715 | |
| 1716 | event = PJ_POOL_ALLOC_T(pool, pj_event_t); |
| 1717 | |
| 1718 | init_mutex(&event->mutex, name, PJ_MUTEX_SIMPLE); |
| 1719 | pthread_cond_init(&event->cond, 0); |
| 1720 | event->auto_reset = !manual_reset; |
| 1721 | event->threads_waiting = 0; |
| 1722 | |
| 1723 | if (initial) { |
| 1724 | event->state = EV_STATE_SET; |
| 1725 | event->threads_to_release = 1; |
| 1726 | } else { |
| 1727 | event->state = EV_STATE_OFF; |
| 1728 | event->threads_to_release = 0; |
| 1729 | } |
| 1730 | |
| 1731 | *ptr_event = event; |
| 1732 | return PJ_SUCCESS; |
| 1733 | } |
| 1734 | |
| 1735 | static void event_on_one_release(pj_event_t *event) |
| 1736 | { |
| 1737 | if (event->state == EV_STATE_SET) { |
| 1738 | if (event->auto_reset) { |
| 1739 | event->threads_to_release = 0; |
| 1740 | event->state = EV_STATE_OFF; |
| 1741 | } else { |
| 1742 | /* Manual reset remains on */ |
| 1743 | } |
| 1744 | } else { |
| 1745 | if (event->auto_reset) { |
| 1746 | /* Only release one */ |
| 1747 | event->threads_to_release = 0; |
| 1748 | event->state = EV_STATE_OFF; |
| 1749 | } else { |
| 1750 | event->threads_to_release--; |
| 1751 | pj_assert(event->threads_to_release >= 0); |
| 1752 | if (event->threads_to_release==0) |
| 1753 | event->state = EV_STATE_OFF; |
| 1754 | } |
| 1755 | } |
| 1756 | } |
| 1757 | |
| 1758 | /* |
| 1759 | * pj_event_wait() |
| 1760 | */ |
| 1761 | PJ_DEF(pj_status_t) pj_event_wait(pj_event_t *event) |
| 1762 | { |
| 1763 | pthread_mutex_lock(&event->mutex.mutex); |
| 1764 | event->threads_waiting++; |
| 1765 | while (event->state == EV_STATE_OFF) |
| 1766 | pthread_cond_wait(&event->cond, &event->mutex.mutex); |
| 1767 | event->threads_waiting--; |
| 1768 | event_on_one_release(event); |
| 1769 | pthread_mutex_unlock(&event->mutex.mutex); |
| 1770 | return PJ_SUCCESS; |
| 1771 | } |
| 1772 | |
| 1773 | /* |
| 1774 | * pj_event_trywait() |
| 1775 | */ |
| 1776 | PJ_DEF(pj_status_t) pj_event_trywait(pj_event_t *event) |
| 1777 | { |
| 1778 | pj_status_t status; |
| 1779 | |
| 1780 | pthread_mutex_lock(&event->mutex.mutex); |
| 1781 | status = event->state != EV_STATE_OFF ? PJ_SUCCESS : -1; |
| 1782 | if (status==PJ_SUCCESS) { |
| 1783 | event_on_one_release(event); |
| 1784 | } |
| 1785 | pthread_mutex_unlock(&event->mutex.mutex); |
| 1786 | |
| 1787 | return status; |
| 1788 | } |
| 1789 | |
| 1790 | /* |
| 1791 | * pj_event_set() |
| 1792 | */ |
| 1793 | PJ_DEF(pj_status_t) pj_event_set(pj_event_t *event) |
| 1794 | { |
| 1795 | pthread_mutex_lock(&event->mutex.mutex); |
| 1796 | event->threads_to_release = 1; |
| 1797 | event->state = EV_STATE_SET; |
| 1798 | if (event->auto_reset) |
| 1799 | pthread_cond_signal(&event->cond); |
| 1800 | else |
| 1801 | pthread_cond_broadcast(&event->cond); |
| 1802 | pthread_mutex_unlock(&event->mutex.mutex); |
| 1803 | return PJ_SUCCESS; |
| 1804 | } |
| 1805 | |
| 1806 | /* |
| 1807 | * pj_event_pulse() |
| 1808 | */ |
| 1809 | PJ_DEF(pj_status_t) pj_event_pulse(pj_event_t *event) |
| 1810 | { |
| 1811 | pthread_mutex_lock(&event->mutex.mutex); |
| 1812 | if (event->threads_waiting) { |
| 1813 | event->threads_to_release = event->auto_reset ? 1 : |
| 1814 | event->threads_waiting; |
| 1815 | event->state = EV_STATE_PULSED; |
| 1816 | if (event->threads_to_release==1) |
| 1817 | pthread_cond_signal(&event->cond); |
| 1818 | else |
| 1819 | pthread_cond_broadcast(&event->cond); |
| 1820 | } |
| 1821 | pthread_mutex_unlock(&event->mutex.mutex); |
| 1822 | return PJ_SUCCESS; |
| 1823 | } |
| 1824 | |
| 1825 | /* |
| 1826 | * pj_event_reset() |
| 1827 | */ |
| 1828 | PJ_DEF(pj_status_t) pj_event_reset(pj_event_t *event) |
| 1829 | { |
| 1830 | pthread_mutex_lock(&event->mutex.mutex); |
| 1831 | event->state = EV_STATE_OFF; |
| 1832 | event->threads_to_release = 0; |
| 1833 | pthread_mutex_unlock(&event->mutex.mutex); |
| 1834 | return PJ_SUCCESS; |
| 1835 | } |
| 1836 | |
| 1837 | /* |
| 1838 | * pj_event_destroy() |
| 1839 | */ |
| 1840 | PJ_DEF(pj_status_t) pj_event_destroy(pj_event_t *event) |
| 1841 | { |
| 1842 | pj_mutex_destroy(&event->mutex); |
| 1843 | pthread_cond_destroy(&event->cond); |
| 1844 | return PJ_SUCCESS; |
| 1845 | } |
| 1846 | |
| 1847 | #endif /* PJ_HAS_EVENT_OBJ */ |
| 1848 | |
| 1849 | /////////////////////////////////////////////////////////////////////////////// |
| 1850 | #if defined(PJ_TERM_HAS_COLOR) && PJ_TERM_HAS_COLOR != 0 |
| 1851 | /* |
| 1852 | * Terminal |
| 1853 | */ |
| 1854 | |
| 1855 | /** |
| 1856 | * Set terminal color. |
| 1857 | */ |
| 1858 | PJ_DEF(pj_status_t) pj_term_set_color(pj_color_t color) |
| 1859 | { |
| 1860 | /* put bright prefix to ansi_color */ |
| 1861 | char ansi_color[12] = "\033[01;3"; |
| 1862 | |
| 1863 | if (color & PJ_TERM_COLOR_BRIGHT) { |
| 1864 | color ^= PJ_TERM_COLOR_BRIGHT; |
| 1865 | } else { |
| 1866 | strcpy(ansi_color, "\033[00;3"); |
| 1867 | } |
| 1868 | |
| 1869 | switch (color) { |
| 1870 | case 0: |
| 1871 | /* black color */ |
| 1872 | strcat(ansi_color, "0m"); |
| 1873 | break; |
| 1874 | case PJ_TERM_COLOR_R: |
| 1875 | /* red color */ |
| 1876 | strcat(ansi_color, "1m"); |
| 1877 | break; |
| 1878 | case PJ_TERM_COLOR_G: |
| 1879 | /* green color */ |
| 1880 | strcat(ansi_color, "2m"); |
| 1881 | break; |
| 1882 | case PJ_TERM_COLOR_B: |
| 1883 | /* blue color */ |
| 1884 | strcat(ansi_color, "4m"); |
| 1885 | break; |
| 1886 | case PJ_TERM_COLOR_R | PJ_TERM_COLOR_G: |
| 1887 | /* yellow color */ |
| 1888 | strcat(ansi_color, "3m"); |
| 1889 | break; |
| 1890 | case PJ_TERM_COLOR_R | PJ_TERM_COLOR_B: |
| 1891 | /* magenta color */ |
| 1892 | strcat(ansi_color, "5m"); |
| 1893 | break; |
| 1894 | case PJ_TERM_COLOR_G | PJ_TERM_COLOR_B: |
| 1895 | /* cyan color */ |
| 1896 | strcat(ansi_color, "6m"); |
| 1897 | break; |
| 1898 | case PJ_TERM_COLOR_R | PJ_TERM_COLOR_G | PJ_TERM_COLOR_B: |
| 1899 | /* white color */ |
| 1900 | strcat(ansi_color, "7m"); |
| 1901 | break; |
| 1902 | default: |
| 1903 | /* default console color */ |
| 1904 | strcpy(ansi_color, "\033[00m"); |
| 1905 | break; |
| 1906 | } |
| 1907 | |
| 1908 | fputs(ansi_color, stdout); |
| 1909 | |
| 1910 | return PJ_SUCCESS; |
| 1911 | } |
| 1912 | |
| 1913 | /** |
| 1914 | * Get current terminal foreground color. |
| 1915 | */ |
| 1916 | PJ_DEF(pj_color_t) pj_term_get_color(void) |
| 1917 | { |
| 1918 | return 0; |
| 1919 | } |
| 1920 | |
| 1921 | #endif /* PJ_TERM_HAS_COLOR */ |
| 1922 | |
| 1923 | #if !defined(PJ_DARWINOS) || PJ_DARWINOS == 0 |
| 1924 | /* |
| 1925 | * pj_run_app() |
| 1926 | */ |
| 1927 | PJ_DEF(int) pj_run_app(pj_main_func_ptr main_func, int argc, char *argv[], |
| 1928 | unsigned flags) |
| 1929 | { |
| 1930 | return (*main_func)(argc, argv); |
| 1931 | } |
| 1932 | #endif |