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| 1 | +/*! | |
| 2 | + * \copy | |
| 3 | + * Copyright (c) 2009-2019, 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 wels_decoder_thread.cpp | |
| 33 | + * | |
| 34 | + * \brief Interfaces introduced in thread programming | |
| 35 | + * | |
| 36 | + * \date 08/06/2018 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) && !defined(__CYGWIN__) | |
| 48 | +#include <sys/types.h> | |
| 49 | +#include <sys/param.h> | |
| 50 | +#include <unistd.h> | |
| 51 | +#ifndef __Fuchsia__ | |
| 52 | +#include <sys/sysctl.h> | |
| 53 | +#endif | |
| 54 | +#ifdef __APPLE__ | |
| 55 | +#define HW_NCPU_NAME "hw.logicalcpu" | |
| 56 | +#else | |
| 57 | +#define HW_NCPU_NAME "hw.ncpu" | |
| 58 | +#endif | |
| 59 | +#endif | |
| 60 | +#ifdef ANDROID_NDK | |
| 61 | +#include <cpu-features.h> | |
| 62 | +#endif | |
| 63 | +#ifdef __ANDROID__ | |
| 64 | +#include <android/api-level.h> | |
| 65 | +#endif | |
| 66 | + | |
| 67 | +#include "wels_decoder_thread.h" | |
| 68 | +#include <stdio.h> | |
| 69 | +#include <stdlib.h> | |
| 70 | + | |
| 71 | +int32_t GetCPUCount() { | |
| 72 | + WelsLogicalProcessInfo pInfo; | |
| 73 | + pInfo.ProcessorCount = 1; | |
| 74 | + WelsQueryLogicalProcessInfo (&pInfo); | |
| 75 | + return pInfo.ProcessorCount; | |
| 76 | +} | |
| 77 | + | |
| 78 | +int ThreadCreate (SWelsDecThread* t, LPWELS_THREAD_ROUTINE tf, void* ta) { | |
| 79 | + WELS_THREAD_ATTR attr = 0; | |
| 80 | + return WelsThreadCreate (& (t->h), tf, ta, attr); | |
| 81 | +} | |
| 82 | + | |
| 83 | +int ThreadWait (SWelsDecThread* t) { | |
| 84 | + return WelsThreadJoin (t->h); | |
| 85 | +} | |
| 86 | + | |
| 87 | +#if defined(_WIN32) || defined(__CYGWIN__) | |
| 88 | + | |
| 89 | +int EventCreate (SWelsDecEvent* e, int manualReset, int initialState) { | |
| 90 | + e->h = CreateEvent (NULL, manualReset, initialState, NULL); | |
| 91 | + e->isSignaled = initialState; | |
| 92 | + return (e->h != NULL) ? 0 : 1; | |
| 93 | +} | |
| 94 | + | |
| 95 | +void EventReset (SWelsDecEvent* e) { | |
| 96 | + ResetEvent (e->h); | |
| 97 | + e->isSignaled = 0; | |
| 98 | +} | |
| 99 | + | |
| 100 | +void EventPost (SWelsDecEvent* e) { | |
| 101 | + SetEvent (e->h); | |
| 102 | + e->isSignaled = 1; | |
| 103 | +} | |
| 104 | + | |
| 105 | +int EventWait (SWelsDecEvent* e, int32_t timeout) { | |
| 106 | + DWORD result; | |
| 107 | + if ((uint32_t)timeout == WELS_DEC_THREAD_WAIT_INFINITE || timeout < 0) | |
| 108 | + result = WaitForSingleObject (e->h, INFINITE); | |
| 109 | + else | |
| 110 | + result = WaitForSingleObject (e->h, timeout); | |
| 111 | + | |
| 112 | + if (result == WAIT_OBJECT_0) | |
| 113 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 114 | + else | |
| 115 | + return WAIT_TIMEOUT; | |
| 116 | +} | |
| 117 | + | |
| 118 | +void EventDestroy (SWelsDecEvent* e) { | |
| 119 | + CloseHandle (e->h); | |
| 120 | + e->h = NULL; | |
| 121 | +} | |
| 122 | + | |
| 123 | +int SemCreate (SWelsDecSemphore* s, long value, long max) { | |
| 124 | + s->h = CreateSemaphore (NULL, value, max, NULL); | |
| 125 | + return (s->h != NULL) ? 0 : 1; | |
| 126 | +} | |
| 127 | + | |
| 128 | +int SemWait (SWelsDecSemphore* s, int32_t timeout) { | |
| 129 | + DWORD result; | |
| 130 | + if ((uint32_t)timeout == WELS_DEC_THREAD_WAIT_INFINITE || timeout < 0) | |
| 131 | + result = WaitForSingleObject (s->h, INFINITE); | |
| 132 | + else | |
| 133 | + result = WaitForSingleObject (s->h, timeout); | |
| 134 | + | |
| 135 | + if (result == WAIT_OBJECT_0) { | |
| 136 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 137 | + } else { | |
| 138 | + return WELS_DEC_THREAD_WAIT_TIMEDOUT; | |
| 139 | + } | |
| 140 | +} | |
| 141 | + | |
| 142 | +void SemRelease (SWelsDecSemphore* s, long* prevcount) { | |
| 143 | + ReleaseSemaphore (s->h, 1, prevcount); | |
| 144 | +} | |
| 145 | + | |
| 146 | +void SemDestroy (SWelsDecSemphore* s) { | |
| 147 | + CloseHandle (s->h); | |
| 148 | + s->h = NULL; | |
| 149 | +} | |
| 150 | + | |
| 151 | +#else /* _WIN32 */ | |
| 152 | + | |
| 153 | +static void getTimespecFromTimeout (struct timespec* ts, int32_t timeout) { | |
| 154 | + struct timeval tv; | |
| 155 | + gettimeofday (&tv, 0); | |
| 156 | + ts->tv_nsec = tv.tv_usec * 1000 + timeout * 1000000; | |
| 157 | + ts->tv_sec = tv.tv_sec + ts->tv_nsec / 1000000000; | |
| 158 | + ts->tv_nsec %= 1000000000; | |
| 159 | +} | |
| 160 | +int EventCreate (SWelsDecEvent* e, int manualReset, int initialState) { | |
| 161 | + if (pthread_mutex_init (& (e->m), NULL)) | |
| 162 | + return 1; | |
| 163 | + if (pthread_cond_init (& (e->c), NULL)) | |
| 164 | + return 2; | |
| 165 | + | |
| 166 | + e->isSignaled = initialState; | |
| 167 | + e->manualReset = manualReset; | |
| 168 | + | |
| 169 | + return 0; | |
| 170 | +} | |
| 171 | + | |
| 172 | +void EventReset (SWelsDecEvent* e) { | |
| 173 | + pthread_mutex_lock (& (e->m)); | |
| 174 | + e->isSignaled = 0; | |
| 175 | + pthread_mutex_unlock (& (e->m)); | |
| 176 | +} | |
| 177 | + | |
| 178 | +void EventPost (SWelsDecEvent* e) { | |
| 179 | + pthread_mutex_lock (& (e->m)); | |
| 180 | + pthread_cond_broadcast (& (e->c)); | |
| 181 | + e->isSignaled = 1; | |
| 182 | + pthread_mutex_unlock (& (e->m)); | |
| 183 | +} | |
| 184 | + | |
| 185 | +int EventWait (SWelsDecEvent* e, int32_t timeout) { | |
| 186 | + pthread_mutex_lock (& (e->m)); | |
| 187 | + int signaled = e->isSignaled; | |
| 188 | + if (timeout == 0) { | |
| 189 | + pthread_mutex_unlock (& (e->m)); | |
| 190 | + if (signaled) | |
| 191 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 192 | + else | |
| 193 | + return WELS_DEC_THREAD_WAIT_TIMEDOUT; | |
| 194 | + } | |
| 195 | + if (signaled) { | |
| 196 | + if (!e->manualReset) { | |
| 197 | + e->isSignaled = 0; | |
| 198 | + } | |
| 199 | + pthread_mutex_unlock (& (e->m)); | |
| 200 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 201 | + } | |
| 202 | + int rc = 0; | |
| 203 | + if (timeout == WELS_DEC_THREAD_WAIT_INFINITE || timeout < 0) { | |
| 204 | + rc = pthread_cond_wait (& (e->c), & (e->m)); | |
| 205 | + } else { | |
| 206 | + struct timespec ts; | |
| 207 | + getTimespecFromTimeout (&ts, timeout); | |
| 208 | + rc = pthread_cond_timedwait (& (e->c), & (e->m), &ts); | |
| 209 | + } | |
| 210 | + if (!e->manualReset) { | |
| 211 | + e->isSignaled = 0; | |
| 212 | + } | |
| 213 | + pthread_mutex_unlock (& (e->m)); | |
| 214 | + if (rc == 0) | |
| 215 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 216 | + else | |
| 217 | + return WELS_DEC_THREAD_WAIT_TIMEDOUT; | |
| 218 | +} | |
| 219 | + | |
| 220 | +void EventDestroy (SWelsDecEvent* e) { | |
| 221 | + pthread_mutex_destroy (& (e->m)); | |
| 222 | + pthread_cond_destroy (& (e->c)); | |
| 223 | +} | |
| 224 | + | |
| 225 | +int SemCreate (SWelsDecSemphore* s, long value, long max) { | |
| 226 | + s->v = value; | |
| 227 | + s->max = max; | |
| 228 | + if (pthread_mutex_init (& (s->m), NULL)) | |
| 229 | + return 1; | |
| 230 | + const char* event_name = ""; | |
| 231 | + if (WelsEventOpen (& (s->e), event_name)) { | |
| 232 | + return 2; | |
| 233 | + } | |
| 234 | + return 0; | |
| 235 | +} | |
| 236 | + | |
| 237 | +int SemWait (SWelsDecSemphore* s, int32_t timeout) { | |
| 238 | +#if defined(__APPLE__) | |
| 239 | + pthread_mutex_lock (& (s->m)); | |
| 240 | +#endif | |
| 241 | + int rc = 0; | |
| 242 | + if (timeout != 0) { | |
| 243 | + while ((s->v) == 0) { | |
| 244 | + if (timeout == WELS_DEC_THREAD_WAIT_INFINITE || timeout < 0) { | |
| 245 | + // infinite wait until released | |
| 246 | +#if defined(__APPLE__) | |
| 247 | + rc = pthread_cond_wait (& (s->e), & (s->m)); | |
| 248 | +#else | |
| 249 | + rc = sem_wait (s->e); | |
| 250 | + if (rc != 0) rc = errno; | |
| 251 | +#endif | |
| 252 | + } else { | |
| 253 | + struct timespec ts; | |
| 254 | + getTimespecFromTimeout (&ts, timeout); | |
| 255 | +#if defined(__APPLE__) | |
| 256 | + rc = pthread_cond_timedwait (& (s->e), & (s->m), &ts); | |
| 257 | +#else | |
| 258 | + rc = sem_timedwait (s->e, &ts); | |
| 259 | + if (rc != 0) rc = errno; | |
| 260 | +#endif | |
| 261 | + if (rc != EINTR) { | |
| 262 | + // if timed out we return to the caller | |
| 263 | + break; | |
| 264 | + } | |
| 265 | + } | |
| 266 | + } | |
| 267 | + // only decrement counter if semaphore was signaled | |
| 268 | + if (rc == 0) | |
| 269 | + s->v -= 1; | |
| 270 | + | |
| 271 | + } else { | |
| 272 | + // Special handling for timeout of 0 | |
| 273 | + if (s->v > 0) { | |
| 274 | + s->v -= 1; | |
| 275 | + rc = 0; | |
| 276 | + } else { | |
| 277 | + rc = 1; | |
| 278 | + } | |
| 279 | + } | |
| 280 | +#if defined(__APPLE__) | |
| 281 | + pthread_mutex_unlock (& (s->m)); | |
| 282 | +#endif | |
| 283 | + // set return value | |
| 284 | + if (rc == 0) | |
| 285 | + return WELS_DEC_THREAD_WAIT_SIGNALED; | |
| 286 | + else | |
| 287 | + return WELS_DEC_THREAD_WAIT_TIMEDOUT; | |
| 288 | +} | |
| 289 | + | |
| 290 | +void SemRelease (SWelsDecSemphore* s, long* o_pPrevCount) { | |
| 291 | + long prevcount; | |
| 292 | +#ifdef __APPLE__ | |
| 293 | + pthread_mutex_lock (& (s->m)); | |
| 294 | + prevcount = s->v; | |
| 295 | + if (s->v < s->max) | |
| 296 | + s->v += 1; | |
| 297 | + pthread_cond_signal (& (s->e)); | |
| 298 | + pthread_mutex_unlock (& (s->m)); | |
| 299 | +#else | |
| 300 | + prevcount = s->v; | |
| 301 | + if (s->v < s->max) | |
| 302 | + s->v += 1; | |
| 303 | + sem_post (s->e); | |
| 304 | +#endif | |
| 305 | + if (o_pPrevCount != NULL) { | |
| 306 | + *o_pPrevCount = prevcount; | |
| 307 | + } | |
| 308 | +} | |
| 309 | + | |
| 310 | +void SemDestroy (SWelsDecSemphore* s) { | |
| 311 | + pthread_mutex_destroy (& (s->m)); | |
| 312 | + const char* event_name = ""; | |
| 313 | + WelsEventClose (& (s->e), event_name); | |
| 314 | +} | |
| 315 | + | |
| 316 | +#endif /* !_WIN32 */ | |
| 317 | + | |