diff options
Diffstat (limited to '3rdparty/SDL2/src/thread/pthread/SDL_syssem.c')
-rw-r--r-- | 3rdparty/SDL2/src/thread/pthread/SDL_syssem.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/3rdparty/SDL2/src/thread/pthread/SDL_syssem.c b/3rdparty/SDL2/src/thread/pthread/SDL_syssem.c deleted file mode 100644 index b7547e699ca..00000000000 --- a/3rdparty/SDL2/src/thread/pthread/SDL_syssem.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "../../SDL_internal.h" - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif -#include <errno.h> -#include <pthread.h> -#include <semaphore.h> -#include <sys/time.h> -#include <time.h> - -#include "SDL_thread.h" -#include "SDL_timer.h" - -/* Wrapper around POSIX 1003.1b semaphores */ - -#if defined(__MACOSX__) || defined(__IPHONEOS__) -/* Mac OS X doesn't support sem_getvalue() as of version 10.4 */ -#include "../generic/SDL_syssem.c" -#else - -struct SDL_semaphore -{ - sem_t sem; -}; - -/* Create a semaphore, initialized with value */ -SDL_sem * -SDL_CreateSemaphore(Uint32 initial_value) -{ - SDL_sem *sem = (SDL_sem *) SDL_malloc(sizeof(SDL_sem)); - if (sem) { - if (sem_init(&sem->sem, 0, initial_value) < 0) { - SDL_SetError("sem_init() failed"); - SDL_free(sem); - sem = NULL; - } - } else { - SDL_OutOfMemory(); - } - return sem; -} - -void -SDL_DestroySemaphore(SDL_sem * sem) -{ - if (sem) { - sem_destroy(&sem->sem); - SDL_free(sem); - } -} - -int -SDL_SemTryWait(SDL_sem * sem) -{ - int retval; - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - retval = SDL_MUTEX_TIMEDOUT; - if (sem_trywait(&sem->sem) == 0) { - retval = 0; - } - return retval; -} - -int -SDL_SemWait(SDL_sem * sem) -{ - int retval; - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - retval = sem_wait(&sem->sem); - if (retval < 0) { - retval = SDL_SetError("sem_wait() failed"); - } - return retval; -} - -int -SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout) -{ - int retval; -#ifdef HAVE_SEM_TIMEDWAIT -#ifndef HAVE_CLOCK_GETTIME - struct timeval now; -#endif - struct timespec ts_timeout; -#else - Uint32 end; -#endif - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - /* Try the easy cases first */ - if (timeout == 0) { - return SDL_SemTryWait(sem); - } - if (timeout == SDL_MUTEX_MAXWAIT) { - return SDL_SemWait(sem); - } - -#ifdef HAVE_SEM_TIMEDWAIT - /* Setup the timeout. sem_timedwait doesn't wait for - * a lapse of time, but until we reach a certain time. - * This time is now plus the timeout. - */ -#ifdef HAVE_CLOCK_GETTIME - clock_gettime(CLOCK_REALTIME, &ts_timeout); - - /* Add our timeout to current time */ - ts_timeout.tv_nsec += (timeout % 1000) * 1000000; - ts_timeout.tv_sec += timeout / 1000; -#else - gettimeofday(&now, NULL); - - /* Add our timeout to current time */ - ts_timeout.tv_sec = now.tv_sec + (timeout / 1000); - ts_timeout.tv_nsec = (now.tv_usec + (timeout % 1000) * 1000) * 1000; -#endif - - /* Wrap the second if needed */ - if (ts_timeout.tv_nsec > 1000000000) { - ts_timeout.tv_sec += 1; - ts_timeout.tv_nsec -= 1000000000; - } - - /* Wait. */ - do { - retval = sem_timedwait(&sem->sem, &ts_timeout); - } while (retval < 0 && errno == EINTR); - - if (retval < 0) { - if (errno == ETIMEDOUT) { - retval = SDL_MUTEX_TIMEDOUT; - } else { - SDL_SetError("sem_timedwait returned an error: %s", strerror(errno)); - } - } -#else - end = SDL_GetTicks() + timeout; - while ((retval = SDL_SemTryWait(sem)) == SDL_MUTEX_TIMEDOUT) { - if (SDL_TICKS_PASSED(SDL_GetTicks(), end)) { - break; - } - SDL_Delay(1); - } -#endif /* HAVE_SEM_TIMEDWAIT */ - - return retval; -} - -Uint32 -SDL_SemValue(SDL_sem * sem) -{ - int ret = 0; - if (sem) { - sem_getvalue(&sem->sem, &ret); - if (ret < 0) { - ret = 0; - } - } - return (Uint32) ret; -} - -int -SDL_SemPost(SDL_sem * sem) -{ - int retval; - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - retval = sem_post(&sem->sem); - if (retval < 0) { - SDL_SetError("sem_post() failed"); - } - return retval; -} - -#endif /* __MACOSX__ */ -/* vi: set ts=4 sw=4 expandtab: */ |