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| 1 | /*! | ||
| 2 | * \copy | ||
| 3 | * Copyright (c) 2009-2013, Cisco Systems | ||
| 4 | * All rights reserved. | ||
| 5 | * | ||
| 6 | * Redistribution and use in source and binary forms, with or without | ||
| 7 | * modification, are permitted provided that the following conditions | ||
| 8 | * are met: | ||
| 9 | * | ||
| 10 | * * Redistributions of source code must retain the above copyright | ||
| 11 | * notice, this list of conditions and the following disclaimer. | ||
| 12 | * | ||
| 13 | * * Redistributions in binary form must reproduce the above copyright | ||
| 14 | * notice, this list of conditions and the following disclaimer in | ||
| 15 | * the documentation and/or other materials provided with the | ||
| 16 | * distribution. | ||
| 17 | * | ||
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | ||
| 21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
| 22 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | ||
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
| 25 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| 26 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | ||
| 28 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| 29 | * POSSIBILITY OF SUCH DAMAGE. | ||
| 30 | * | ||
| 31 | * | ||
| 32 | * \file WelsThreadLib.c | ||
| 33 | * | ||
| 34 | * \brief Interfaces introduced in thread programming | ||
| 35 | * | ||
| 36 | * \date 11/17/2009 Created | ||
| 37 | * | ||
| 38 | ************************************************************************************* | ||
| 39 | */ | ||
| 40 | |||
| 41 | |||
| 42 | #ifdef LINUX | ||
| 43 | #ifndef _GNU_SOURCE | ||
| 44 | #define _GNU_SOURCE | ||
| 45 | #endif | ||
| 46 | #include <sched.h> | ||
| 47 | #elif !defined(_WIN32) | ||
| 48 | #include <sys/types.h> | ||
| 49 | #include <sys/sysctl.h> | ||
| 50 | #include <sys/param.h> | ||
| 51 | #include <unistd.h> | ||
| 52 | #ifdef __APPLE__ | ||
| 53 | #define HW_NCPU_NAME "hw.logicalcpu" | ||
| 54 | #else | ||
| 55 | #define HW_NCPU_NAME "hw.ncpu" | ||
| 56 | #endif | ||
| 57 | #endif | ||
| 58 | #ifdef ANDROID_NDK | ||
| 59 | #include <cpu-features.h> | ||
| 60 | #endif | ||
| 61 | |||
| 62 | #include "WelsThreadLib.h" | ||
| 63 | #include <stdio.h> | ||
| 64 | #include <stdlib.h> | ||
| 65 | |||
| 66 | |||
| 67 | #ifdef _WIN32 | ||
| 68 | |||
| 69 | #ifdef WINAPI_FAMILY | ||
| 70 | #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) | ||
| 71 | #define InitializeCriticalSection(x) InitializeCriticalSectionEx(x, 0, 0) | ||
| 72 | #endif | ||
| 73 | #endif | ||
| 74 | |||
| 75 | WELS_THREAD_ERROR_CODE WelsMutexInit (WELS_MUTEX* mutex) { | ||
| 76 | InitializeCriticalSection (mutex); | ||
| 77 | |||
| 78 | return WELS_THREAD_ERROR_OK; | ||
| 79 | } | ||
| 80 | |||
| 81 | WELS_THREAD_ERROR_CODE WelsMutexLock (WELS_MUTEX* mutex) { | ||
| 82 | EnterCriticalSection (mutex); | ||
| 83 | |||
| 84 | return WELS_THREAD_ERROR_OK; | ||
| 85 | } | ||
| 86 | |||
| 87 | WELS_THREAD_ERROR_CODE WelsMutexUnlock (WELS_MUTEX* mutex) { | ||
| 88 | LeaveCriticalSection (mutex); | ||
| 89 | |||
| 90 | return WELS_THREAD_ERROR_OK; | ||
| 91 | } | ||
| 92 | |||
| 93 | WELS_THREAD_ERROR_CODE WelsMutexDestroy (WELS_MUTEX* mutex) { | ||
| 94 | DeleteCriticalSection (mutex); | ||
| 95 | |||
| 96 | return WELS_THREAD_ERROR_OK; | ||
| 97 | } | ||
| 98 | |||
| 99 | #else /* _WIN32 */ | ||
| 100 | |||
| 101 | WELS_THREAD_ERROR_CODE WelsMutexInit (WELS_MUTEX* mutex) { | ||
| 102 | return pthread_mutex_init (mutex, NULL); | ||
| 103 | } | ||
| 104 | |||
| 105 | WELS_THREAD_ERROR_CODE WelsMutexLock (WELS_MUTEX* mutex) { | ||
| 106 | return pthread_mutex_lock (mutex); | ||
| 107 | } | ||
| 108 | |||
| 109 | WELS_THREAD_ERROR_CODE WelsMutexUnlock (WELS_MUTEX* mutex) { | ||
| 110 | return pthread_mutex_unlock (mutex); | ||
| 111 | } | ||
| 112 | |||
| 113 | WELS_THREAD_ERROR_CODE WelsMutexDestroy (WELS_MUTEX* mutex) { | ||
| 114 | return pthread_mutex_destroy (mutex); | ||
| 115 | } | ||
| 116 | |||
| 117 | #endif /* !_WIN32 */ | ||
| 118 | |||
| 119 | |||
| 120 | #ifdef MT_ENABLED | ||
| 121 | |||
| 122 | #ifdef _WIN32 | ||
| 123 | |||
| 124 | void WelsSleep (uint32_t dwMilliseconds) { | ||
| 125 | Sleep (dwMilliseconds); | ||
| 126 | } | ||
| 127 | |||
| 128 | WELS_THREAD_ERROR_CODE WelsEventOpen (WELS_EVENT* event, const char* event_name) { | ||
| 129 | WELS_EVENT h = CreateEvent (NULL, FALSE, FALSE, NULL); | ||
| 130 | |||
| 131 | if (h == NULL) { | ||
| 132 | return WELS_THREAD_ERROR_GENERAL; | ||
| 133 | } | ||
| 134 | *event = h; | ||
| 135 | return WELS_THREAD_ERROR_OK; | ||
| 136 | } | ||
| 137 | |||
| 138 | WELS_THREAD_ERROR_CODE WelsEventSignal (WELS_EVENT* event) { | ||
| 139 | if (SetEvent (*event)) { | ||
| 140 | return WELS_THREAD_ERROR_OK; | ||
| 141 | } | ||
| 142 | return WELS_THREAD_ERROR_GENERAL; | ||
| 143 | } | ||
| 144 | |||
| 145 | WELS_THREAD_ERROR_CODE WelsEventWait (WELS_EVENT* event) { | ||
| 146 | return WaitForSingleObject (*event, INFINITE); | ||
| 147 | } | ||
| 148 | |||
| 149 | WELS_THREAD_ERROR_CODE WelsEventWaitWithTimeOut (WELS_EVENT* event, uint32_t dwMilliseconds) { | ||
| 150 | return WaitForSingleObject (*event, dwMilliseconds); | ||
| 151 | } | ||
| 152 | |||
| 153 | WELS_THREAD_ERROR_CODE WelsMultipleEventsWaitSingleBlocking (uint32_t nCount, | ||
| 154 | WELS_EVENT* event_list, WELS_EVENT* master_event) { | ||
| 155 | // Don't need/use the master event for anything, since windows has got WaitForMultipleObjects | ||
| 156 | return WaitForMultipleObjects (nCount, event_list, FALSE, INFINITE); | ||
| 157 | } | ||
| 158 | |||
| 159 | WELS_THREAD_ERROR_CODE WelsMultipleEventsWaitAllBlocking (uint32_t nCount, | ||
| 160 | WELS_EVENT* event_list, WELS_EVENT* master_event) { | ||
| 161 | // Don't need/use the master event for anything, since windows has got WaitForMultipleObjects | ||
| 162 | return WaitForMultipleObjects (nCount, event_list, TRUE, INFINITE); | ||
| 163 | } | ||
| 164 | |||
| 165 | WELS_THREAD_ERROR_CODE WelsEventClose (WELS_EVENT* event, const char* event_name) { | ||
| 166 | CloseHandle (*event); | ||
| 167 | |||
| 168 | *event = NULL; | ||
| 169 | return WELS_THREAD_ERROR_OK; | ||
| 170 | } | ||
| 171 | |||
| 172 | |||
| 173 | WELS_THREAD_ERROR_CODE WelsThreadCreate (WELS_THREAD_HANDLE* thread, LPWELS_THREAD_ROUTINE routine, | ||
| 174 | void* arg, WELS_THREAD_ATTR attr) { | ||
| 175 | WELS_THREAD_HANDLE h = CreateThread (NULL, 0, routine, arg, 0, NULL); | ||
| 176 | |||
| 177 | if (h == NULL) { | ||
| 178 | return WELS_THREAD_ERROR_GENERAL; | ||
| 179 | } | ||
| 180 | * thread = h; | ||
| 181 | |||
| 182 | return WELS_THREAD_ERROR_OK; | ||
| 183 | } | ||
| 184 | |||
| 185 | WELS_THREAD_ERROR_CODE WelsThreadJoin (WELS_THREAD_HANDLE thread) { | ||
| 186 | WaitForSingleObject (thread, INFINITE); | ||
| 187 | CloseHandle (thread); | ||
| 188 | |||
| 189 | return WELS_THREAD_ERROR_OK; | ||
| 190 | } | ||
| 191 | |||
| 192 | |||
| 193 | WELS_THREAD_HANDLE WelsThreadSelf() { | ||
| 194 | return GetCurrentThread(); | ||
| 195 | } | ||
| 196 | |||
| 197 | WELS_THREAD_ERROR_CODE WelsQueryLogicalProcessInfo (WelsLogicalProcessInfo* pInfo) { | ||
| 198 | SYSTEM_INFO si; | ||
| 199 | |||
| 200 | GetSystemInfo (&si); | ||
| 201 | |||
| 202 | pInfo->ProcessorCount = si.dwNumberOfProcessors; | ||
| 203 | |||
| 204 | return WELS_THREAD_ERROR_OK; | ||
| 205 | } | ||
| 206 | |||
| 207 | #else | ||
| 208 | |||
| 209 | void WelsSleep (uint32_t dwMilliseconds) { | ||
| 210 | usleep (dwMilliseconds * 1000); // microseconds | ||
| 211 | } | ||
| 212 | |||
| 213 | WELS_THREAD_ERROR_CODE WelsThreadCreate (WELS_THREAD_HANDLE* thread, LPWELS_THREAD_ROUTINE routine, | ||
| 214 | void* arg, WELS_THREAD_ATTR attr) { | ||
| 215 | WELS_THREAD_ERROR_CODE err = 0; | ||
| 216 | |||
| 217 | pthread_attr_t at; | ||
| 218 | err = pthread_attr_init (&at); | ||
| 219 | if (err) | ||
| 220 | return err; | ||
| 221 | #ifndef __ANDROID__ | ||
| 222 | err = pthread_attr_setscope (&at, PTHREAD_SCOPE_SYSTEM); | ||
| 223 | if (err) | ||
| 224 | return err; | ||
| 225 | err = pthread_attr_setschedpolicy (&at, SCHED_FIFO); | ||
| 226 | if (err) | ||
| 227 | return err; | ||
| 228 | #endif | ||
| 229 | err = pthread_create (thread, &at, routine, arg); | ||
| 230 | |||
| 231 | pthread_attr_destroy (&at); | ||
| 232 | |||
| 233 | return err; | ||
| 234 | } | ||
| 235 | |||
| 236 | WELS_THREAD_ERROR_CODE WelsThreadJoin (WELS_THREAD_HANDLE thread) { | ||
| 237 | return pthread_join (thread, NULL); | ||
| 238 | } | ||
| 239 | |||
| 240 | WELS_THREAD_HANDLE WelsThreadSelf() { | ||
| 241 | return pthread_self(); | ||
| 242 | } | ||
| 243 | |||
| 244 | // unnamed semaphores aren't supported on OS X | ||
| 245 | |||
| 246 | WELS_THREAD_ERROR_CODE WelsEventOpen (WELS_EVENT* p_event, const char* event_name) { | ||
| 247 | #ifdef __APPLE__ | ||
| 248 | if (p_event == NULL || event_name == NULL) | ||
| 249 | return WELS_THREAD_ERROR_GENERAL; | ||
| 250 | *p_event = sem_open (event_name, O_CREAT, (S_IRUSR | S_IWUSR)/*0600*/, 0); | ||
| 251 | if (*p_event == (sem_t*)SEM_FAILED) { | ||
| 252 | sem_unlink (event_name); | ||
| 253 | *p_event = NULL; | ||
| 254 | return WELS_THREAD_ERROR_GENERAL; | ||
| 255 | } else { | ||
| 256 | return WELS_THREAD_ERROR_OK; | ||
| 257 | } | ||
| 258 | #else | ||
| 259 | WELS_EVENT event = (WELS_EVENT) malloc(sizeof(*event)); | ||
| 260 | if (event == NULL) | ||
| 261 | return WELS_THREAD_ERROR_GENERAL; | ||
| 262 | WELS_THREAD_ERROR_CODE err = sem_init(event, 0, 0); | ||
| 263 | if (!err) { | ||
| 264 | *p_event = event; | ||
| 265 | return err; | ||
| 266 | } | ||
| 267 | free(event); | ||
| 268 | return err; | ||
| 269 | #endif | ||
| 270 | } | ||
| 271 | WELS_THREAD_ERROR_CODE WelsEventClose (WELS_EVENT* event, const char* event_name) { | ||
| 272 | #ifdef __APPLE__ | ||
| 273 | WELS_THREAD_ERROR_CODE err = sem_close (*event); // match with sem_open | ||
| 274 | if (event_name) | ||
| 275 | sem_unlink (event_name); | ||
| 276 | return err; | ||
| 277 | #else | ||
| 278 | WELS_THREAD_ERROR_CODE err = sem_destroy (*event); // match with sem_init | ||
| 279 | free(*event); | ||
| 280 | return err; | ||
| 281 | #endif | ||
| 282 | } | ||
| 283 | |||
| 284 | WELS_THREAD_ERROR_CODE WelsEventSignal (WELS_EVENT* event) { | ||
| 285 | WELS_THREAD_ERROR_CODE err = 0; | ||
| 286 | // int32_t val = 0; | ||
| 287 | // sem_getvalue(event, &val); | ||
| 288 | // fprintf( stderr, "before signal it, val= %d..\n",val ); | ||
| 289 | err = sem_post (*event); | ||
| 290 | // sem_getvalue(event, &val); | ||
| 291 | // fprintf( stderr, "after signal it, val= %d..\n",val ); | ||
| 292 | return err; | ||
| 293 | } | ||
| 294 | |||
| 295 | WELS_THREAD_ERROR_CODE WelsEventWait (WELS_EVENT* event) { | ||
| 296 | return sem_wait (*event); // blocking until signaled | ||
| 297 | } | ||
| 298 | |||
| 299 | WELS_THREAD_ERROR_CODE WelsEventWaitWithTimeOut (WELS_EVENT* event, uint32_t dwMilliseconds) { | ||
| 300 | if (dwMilliseconds != (uint32_t) - 1) { | ||
| 301 | return sem_wait (*event); | ||
| 302 | } else { | ||
| 303 | #if defined(__APPLE__) | ||
| 304 | int32_t err = 0; | ||
| 305 | int32_t wait_count = 0; | ||
| 306 | do { | ||
| 307 | err = sem_trywait (*event); | ||
| 308 | if (WELS_THREAD_ERROR_OK == err) | ||
| 309 | break;// WELS_THREAD_ERROR_OK; | ||
| 310 | else if (wait_count > 0) | ||
| 311 | break; | ||
| 312 | usleep (dwMilliseconds * 1000); | ||
| 313 | ++ wait_count; | ||
| 314 | } while (1); | ||
| 315 | return err; | ||
| 316 | #else | ||
| 317 | struct timespec ts; | ||
| 318 | struct timeval tv; | ||
| 319 | |||
| 320 | gettimeofday (&tv, 0); | ||
| 321 | |||
| 322 | ts.tv_nsec = tv.tv_usec * 1000 + dwMilliseconds * 1000000; | ||
| 323 | ts.tv_sec = tv.tv_sec + ts.tv_nsec / 1000000000; | ||
| 324 | ts.tv_nsec %= 1000000000; | ||
| 325 | |||
| 326 | return sem_timedwait (*event, &ts); | ||
| 327 | #endif//__APPLE__ | ||
| 328 | } | ||
| 329 | } | ||
| 330 | |||
| 331 | WELS_THREAD_ERROR_CODE WelsMultipleEventsWaitSingleBlocking (uint32_t nCount, | ||
| 332 | WELS_EVENT* event_list, WELS_EVENT* master_event) { | ||
| 333 | uint32_t nIdx = 0; | ||
| 334 | uint32_t uiAccessTime = 2; // 2 us once | ||
| 335 | |||
| 336 | if (nCount == 0) | ||
| 337 | return WELS_THREAD_ERROR_WAIT_FAILED; | ||
| 338 | |||
| 339 | if (master_event != NULL) { | ||
| 340 | // This design relies on the events actually being semaphores; | ||
| 341 | // if multiple events in the list have been signalled, the master | ||
| 342 | // event should have a similar count (events in windows can't keep | ||
| 343 | // track of the actual count, but the master event isn't needed there | ||
| 344 | // since it uses WaitForMultipleObjects). | ||
| 345 | int32_t err = sem_wait (*master_event); | ||
| 346 | if (err != WELS_THREAD_ERROR_OK) | ||
| 347 | return err; | ||
| 348 | uiAccessTime = 0; // no blocking, just quickly loop through all to find the one that was signalled | ||
| 349 | } | ||
| 350 | |||
| 351 | while (1) { | ||
| 352 | nIdx = 0; // access each event by order | ||
| 353 | while (nIdx < nCount) { | ||
| 354 | int32_t err = 0; | ||
| 355 | int32_t wait_count = 0; | ||
| 356 | |||
| 357 | /* | ||
| 358 | * although such interface is not used in __GNUC__ like platform, to use | ||
| 359 | * pthread_cond_timedwait() might be better choice if need | ||
| 360 | */ | ||
| 361 | do { | ||
| 362 | err = sem_trywait (event_list[nIdx]); | ||
| 363 | if (WELS_THREAD_ERROR_OK == err) | ||
| 364 | return WELS_THREAD_ERROR_WAIT_OBJECT_0 + nIdx; | ||
| 365 | else if (wait_count > 0 || uiAccessTime == 0) | ||
| 366 | break; | ||
| 367 | usleep (uiAccessTime); | ||
| 368 | ++ wait_count; | ||
| 369 | } while (1); | ||
| 370 | // we do need access next event next time | ||
| 371 | ++ nIdx; | ||
| 372 | } | ||
| 373 | usleep (1); // switch to working threads | ||
| 374 | if (master_event != NULL) { | ||
| 375 | // A master event was used and was signalled, but none of the events in the | ||
| 376 | // list was found to be signalled, thus wait a little more when rechecking | ||
| 377 | // the list to avoid busylooping here. | ||
| 378 | // If we ever hit this codepath it's mostly a bug in the code that signals | ||
| 379 | // the events. | ||
| 380 | uiAccessTime = 2; | ||
| 381 | } | ||
| 382 | } | ||
| 383 | |||
| 384 | return WELS_THREAD_ERROR_WAIT_FAILED; | ||
| 385 | } | ||
| 386 | |||
| 387 | WELS_THREAD_ERROR_CODE WelsMultipleEventsWaitAllBlocking (uint32_t nCount, | ||
| 388 | WELS_EVENT* event_list, WELS_EVENT* master_event) { | ||
| 389 | uint32_t nIdx = 0; | ||
| 390 | uint32_t uiCountSignals = 0; | ||
| 391 | uint32_t uiSignalFlag = 0; // UGLY: suppose maximal event number up to 32 | ||
| 392 | |||
| 393 | if (nCount == 0 || nCount > (sizeof (uint32_t) << 3)) | ||
| 394 | return WELS_THREAD_ERROR_WAIT_FAILED; | ||
| 395 | |||
| 396 | while (1) { | ||
| 397 | nIdx = 0; // access each event by order | ||
| 398 | while (nIdx < nCount) { | ||
| 399 | const uint32_t kuiBitwiseFlag = (1 << nIdx); | ||
| 400 | |||
| 401 | if ((uiSignalFlag & kuiBitwiseFlag) != kuiBitwiseFlag) { // non-blocking mode | ||
| 402 | int32_t err = 0; | ||
| 403 | // fprintf( stderr, "sem_wait(): start to wait event %d..\n", nIdx ); | ||
| 404 | if (master_event == NULL) { | ||
| 405 | err = sem_wait (event_list[nIdx]); | ||
| 406 | } else { | ||
| 407 | err = sem_wait (*master_event); | ||
| 408 | if (err == WELS_THREAD_ERROR_OK) { | ||
| 409 | err = sem_wait (event_list[nIdx]); | ||
| 410 | if (err != WELS_THREAD_ERROR_OK) { | ||
| 411 | // We successfully waited for the master event, | ||
| 412 | // but waiting for the individual event failed (e.g. EINTR?). | ||
| 413 | // Increase the master event count so that the next retry will | ||
| 414 | // work as intended. | ||
| 415 | sem_post (*master_event); | ||
| 416 | } | ||
| 417 | } | ||
| 418 | } | ||
| 419 | // fprintf( stderr, "sem_wait(): wait event %d result %d errno %d..\n", nIdx, err, errno ); | ||
| 420 | if (WELS_THREAD_ERROR_OK == err) { | ||
| 421 | // int32_t val = 0; | ||
| 422 | // sem_getvalue(&event_list[nIdx], &val); | ||
| 423 | // fprintf( stderr, "after sem_timedwait(), event_list[%d] semaphore value= %d..\n", nIdx, val); | ||
| 424 | |||
| 425 | uiSignalFlag |= kuiBitwiseFlag; | ||
| 426 | ++ uiCountSignals; | ||
| 427 | if (uiCountSignals >= nCount) { | ||
| 428 | return WELS_THREAD_ERROR_OK; | ||
| 429 | } | ||
| 430 | } | ||
| 431 | } | ||
| 432 | // we do need access next event next time | ||
| 433 | ++ nIdx; | ||
| 434 | } | ||
| 435 | } | ||
| 436 | |||
| 437 | return WELS_THREAD_ERROR_WAIT_FAILED; | ||
| 438 | } | ||
| 439 | |||
| 440 | WELS_THREAD_ERROR_CODE WelsQueryLogicalProcessInfo (WelsLogicalProcessInfo* pInfo) { | ||
| 441 | #ifdef ANDROID_NDK | ||
| 442 | pInfo->ProcessorCount = android_getCpuCount(); | ||
| 443 | return WELS_THREAD_ERROR_OK; | ||
| 444 | #elif defined(LINUX) | ||
| 445 | |||
| 446 | cpu_set_t cpuset; | ||
| 447 | |||
| 448 | CPU_ZERO (&cpuset); | ||
| 449 | |||
| 450 | if (!sched_getaffinity (0, sizeof (cpuset), &cpuset)) | ||
| 451 | pInfo->ProcessorCount = CPU_COUNT (&cpuset); | ||
| 452 | else | ||
| 453 | pInfo->ProcessorCount = 1; | ||
| 454 | |||
| 455 | return WELS_THREAD_ERROR_OK; | ||
| 456 | |||
| 457 | #else | ||
| 458 | |||
| 459 | size_t len = sizeof (pInfo->ProcessorCount); | ||
| 460 | |||
| 461 | if (sysctlbyname (HW_NCPU_NAME, &pInfo->ProcessorCount, &len, NULL, 0) == -1) | ||
| 462 | pInfo->ProcessorCount = 1; | ||
| 463 | |||
| 464 | return WELS_THREAD_ERROR_OK; | ||
| 465 | |||
| 466 | #endif//LINUX | ||
| 467 | } | ||
| 468 | |||
| 469 | #endif | ||
| 470 | |||
| 471 | |||
| 472 | #endif // MT_ENABLED | ||
| 473 | |||