diff options
Diffstat (limited to 'Source/3rdParty/SDL2/src/thread/generic')
7 files changed, 0 insertions, 759 deletions
diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_syscond.c b/Source/3rdParty/SDL2/src/thread/generic/SDL_syscond.c deleted file mode 100644 index 34b9893..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_syscond.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" - -/* An implementation of condition variables using semaphores and mutexes */ -/* - This implementation borrows heavily from the BeOS condition variable - implementation, written by Christopher Tate and Owen Smith. Thanks! - */ - -#include "SDL_thread.h" - -struct SDL_cond -{ - SDL_mutex *lock; - int waiting; - int signals; - SDL_sem *wait_sem; - SDL_sem *wait_done; -}; - -/* Create a condition variable */ -SDL_cond * -SDL_CreateCond(void) -{ - SDL_cond *cond; - - cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond)); - if (cond) { - cond->lock = SDL_CreateMutex(); - cond->wait_sem = SDL_CreateSemaphore(0); - cond->wait_done = SDL_CreateSemaphore(0); - cond->waiting = cond->signals = 0; - if (!cond->lock || !cond->wait_sem || !cond->wait_done) { - SDL_DestroyCond(cond); - cond = NULL; - } - } else { - SDL_OutOfMemory(); - } - return (cond); -} - -/* Destroy a condition variable */ -void -SDL_DestroyCond(SDL_cond * cond) -{ - if (cond) { - if (cond->wait_sem) { - SDL_DestroySemaphore(cond->wait_sem); - } - if (cond->wait_done) { - SDL_DestroySemaphore(cond->wait_done); - } - if (cond->lock) { - SDL_DestroyMutex(cond->lock); - } - SDL_free(cond); - } -} - -/* Restart one of the threads that are waiting on the condition variable */ -int -SDL_CondSignal(SDL_cond * cond) -{ - if (!cond) { - return SDL_SetError("Passed a NULL condition variable"); - } - - /* If there are waiting threads not already signalled, then - signal the condition and wait for the thread to respond. - */ - SDL_LockMutex(cond->lock); - if (cond->waiting > cond->signals) { - ++cond->signals; - SDL_SemPost(cond->wait_sem); - SDL_UnlockMutex(cond->lock); - SDL_SemWait(cond->wait_done); - } else { - SDL_UnlockMutex(cond->lock); - } - - return 0; -} - -/* Restart all threads that are waiting on the condition variable */ -int -SDL_CondBroadcast(SDL_cond * cond) -{ - if (!cond) { - return SDL_SetError("Passed a NULL condition variable"); - } - - /* If there are waiting threads not already signalled, then - signal the condition and wait for the thread to respond. - */ - SDL_LockMutex(cond->lock); - if (cond->waiting > cond->signals) { - int i, num_waiting; - - num_waiting = (cond->waiting - cond->signals); - cond->signals = cond->waiting; - for (i = 0; i < num_waiting; ++i) { - SDL_SemPost(cond->wait_sem); - } - /* Now all released threads are blocked here, waiting for us. - Collect them all (and win fabulous prizes!) :-) - */ - SDL_UnlockMutex(cond->lock); - for (i = 0; i < num_waiting; ++i) { - SDL_SemWait(cond->wait_done); - } - } else { - SDL_UnlockMutex(cond->lock); - } - - return 0; -} - -/* Wait on the condition variable for at most 'ms' milliseconds. - The mutex must be locked before entering this function! - The mutex is unlocked during the wait, and locked again after the wait. - -Typical use: - -Thread A: - SDL_LockMutex(lock); - while ( ! condition ) { - SDL_CondWait(cond, lock); - } - SDL_UnlockMutex(lock); - -Thread B: - SDL_LockMutex(lock); - ... - condition = true; - ... - SDL_CondSignal(cond); - SDL_UnlockMutex(lock); - */ -int -SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms) -{ - int retval; - - if (!cond) { - return SDL_SetError("Passed a NULL condition variable"); - } - - /* Obtain the protection mutex, and increment the number of waiters. - This allows the signal mechanism to only perform a signal if there - are waiting threads. - */ - SDL_LockMutex(cond->lock); - ++cond->waiting; - SDL_UnlockMutex(cond->lock); - - /* Unlock the mutex, as is required by condition variable semantics */ - SDL_UnlockMutex(mutex); - - /* Wait for a signal */ - if (ms == SDL_MUTEX_MAXWAIT) { - retval = SDL_SemWait(cond->wait_sem); - } else { - retval = SDL_SemWaitTimeout(cond->wait_sem, ms); - } - - /* Let the signaler know we have completed the wait, otherwise - the signaler can race ahead and get the condition semaphore - if we are stopped between the mutex unlock and semaphore wait, - giving a deadlock. See the following URL for details: - http://web.archive.org/web/20010914175514/http://www-classic.be.com/aboutbe/benewsletter/volume_III/Issue40.html#Workshop - */ - SDL_LockMutex(cond->lock); - if (cond->signals > 0) { - /* If we timed out, we need to eat a condition signal */ - if (retval > 0) { - SDL_SemWait(cond->wait_sem); - } - /* We always notify the signal thread that we are done */ - SDL_SemPost(cond->wait_done); - - /* Signal handshake complete */ - --cond->signals; - } - --cond->waiting; - SDL_UnlockMutex(cond->lock); - - /* Lock the mutex, as is required by condition variable semantics */ - SDL_LockMutex(mutex); - - return retval; -} - -/* Wait on the condition variable forever */ -int -SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex) -{ - return SDL_CondWaitTimeout(cond, mutex, SDL_MUTEX_MAXWAIT); -} - -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex.c b/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex.c deleted file mode 100644 index df78ca9..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" - -/* An implementation of mutexes using semaphores */ - -#include "SDL_thread.h" -#include "SDL_systhread_c.h" - - -struct SDL_mutex -{ - int recursive; - SDL_threadID owner; - SDL_sem *sem; -}; - -/* Create a mutex */ -SDL_mutex * -SDL_CreateMutex(void) -{ - SDL_mutex *mutex; - - /* Allocate mutex memory */ - mutex = (SDL_mutex *) SDL_malloc(sizeof(*mutex)); - if (mutex) { - /* Create the mutex semaphore, with initial value 1 */ - mutex->sem = SDL_CreateSemaphore(1); - mutex->recursive = 0; - mutex->owner = 0; - if (!mutex->sem) { - SDL_free(mutex); - mutex = NULL; - } - } else { - SDL_OutOfMemory(); - } - return mutex; -} - -/* Free the mutex */ -void -SDL_DestroyMutex(SDL_mutex * mutex) -{ - if (mutex) { - if (mutex->sem) { - SDL_DestroySemaphore(mutex->sem); - } - SDL_free(mutex); - } -} - -/* Lock the mutex */ -int -SDL_LockMutex(SDL_mutex * mutex) -{ -#if SDL_THREADS_DISABLED - return 0; -#else - SDL_threadID this_thread; - - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - this_thread = SDL_ThreadID(); - if (mutex->owner == this_thread) { - ++mutex->recursive; - } else { - /* The order of operations is important. - We set the locking thread id after we obtain the lock - so unlocks from other threads will fail. - */ - SDL_SemWait(mutex->sem); - mutex->owner = this_thread; - mutex->recursive = 0; - } - - return 0; -#endif /* SDL_THREADS_DISABLED */ -} - -/* try Lock the mutex */ -int -SDL_TryLockMutex(SDL_mutex * mutex) -{ -#if SDL_THREADS_DISABLED - return 0; -#else - int retval = 0; - SDL_threadID this_thread; - - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - this_thread = SDL_ThreadID(); - if (mutex->owner == this_thread) { - ++mutex->recursive; - } else { - /* The order of operations is important. - We set the locking thread id after we obtain the lock - so unlocks from other threads will fail. - */ - retval = SDL_SemWait(mutex->sem); - if (retval == 0) { - mutex->owner = this_thread; - mutex->recursive = 0; - } - } - - return retval; -#endif /* SDL_THREADS_DISABLED */ -} - -/* Unlock the mutex */ -int -SDL_mutexV(SDL_mutex * mutex) -{ -#if SDL_THREADS_DISABLED - return 0; -#else - if (mutex == NULL) { - return SDL_SetError("Passed a NULL mutex"); - } - - /* If we don't own the mutex, we can't unlock it */ - if (SDL_ThreadID() != mutex->owner) { - return SDL_SetError("mutex not owned by this thread"); - } - - if (mutex->recursive) { - --mutex->recursive; - } else { - /* The order of operations is important. - First reset the owner so another thread doesn't lock - the mutex and set the ownership before we reset it, - then release the lock semaphore. - */ - mutex->owner = 0; - SDL_SemPost(mutex->sem); - } - return 0; -#endif /* SDL_THREADS_DISABLED */ -} - -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex_c.h b/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex_c.h deleted file mode 100644 index 2979437..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_sysmutex_c.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_syssem.c b/Source/3rdParty/SDL2/src/thread/generic/SDL_syssem.c deleted file mode 100644 index 30ff824..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_syssem.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" - -/* An implementation of semaphores using mutexes and condition variables */ - -#include "SDL_timer.h" -#include "SDL_thread.h" -#include "SDL_systhread_c.h" - - -#if SDL_THREADS_DISABLED - -SDL_sem * -SDL_CreateSemaphore(Uint32 initial_value) -{ - SDL_SetError("SDL not built with thread support"); - return (SDL_sem *) 0; -} - -void -SDL_DestroySemaphore(SDL_sem * sem) -{ -} - -int -SDL_SemTryWait(SDL_sem * sem) -{ - return SDL_SetError("SDL not built with thread support"); -} - -int -SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout) -{ - return SDL_SetError("SDL not built with thread support"); -} - -int -SDL_SemWait(SDL_sem * sem) -{ - return SDL_SetError("SDL not built with thread support"); -} - -Uint32 -SDL_SemValue(SDL_sem * sem) -{ - return 0; -} - -int -SDL_SemPost(SDL_sem * sem) -{ - return SDL_SetError("SDL not built with thread support"); -} - -#else - -struct SDL_semaphore -{ - Uint32 count; - Uint32 waiters_count; - SDL_mutex *count_lock; - SDL_cond *count_nonzero; -}; - -SDL_sem * -SDL_CreateSemaphore(Uint32 initial_value) -{ - SDL_sem *sem; - - sem = (SDL_sem *) SDL_malloc(sizeof(*sem)); - if (!sem) { - SDL_OutOfMemory(); - return NULL; - } - sem->count = initial_value; - sem->waiters_count = 0; - - sem->count_lock = SDL_CreateMutex(); - sem->count_nonzero = SDL_CreateCond(); - if (!sem->count_lock || !sem->count_nonzero) { - SDL_DestroySemaphore(sem); - return NULL; - } - - return sem; -} - -/* WARNING: - You cannot call this function when another thread is using the semaphore. -*/ -void -SDL_DestroySemaphore(SDL_sem * sem) -{ - if (sem) { - sem->count = 0xFFFFFFFF; - while (sem->waiters_count > 0) { - SDL_CondSignal(sem->count_nonzero); - SDL_Delay(10); - } - SDL_DestroyCond(sem->count_nonzero); - if (sem->count_lock) { - SDL_LockMutex(sem->count_lock); - SDL_UnlockMutex(sem->count_lock); - SDL_DestroyMutex(sem->count_lock); - } - SDL_free(sem); - } -} - -int -SDL_SemTryWait(SDL_sem * sem) -{ - int retval; - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - retval = SDL_MUTEX_TIMEDOUT; - SDL_LockMutex(sem->count_lock); - if (sem->count > 0) { - --sem->count; - retval = 0; - } - SDL_UnlockMutex(sem->count_lock); - - return retval; -} - -int -SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout) -{ - int retval; - - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - /* A timeout of 0 is an easy case */ - if (timeout == 0) { - return SDL_SemTryWait(sem); - } - - SDL_LockMutex(sem->count_lock); - ++sem->waiters_count; - retval = 0; - while ((sem->count == 0) && (retval != SDL_MUTEX_TIMEDOUT)) { - retval = SDL_CondWaitTimeout(sem->count_nonzero, - sem->count_lock, timeout); - } - --sem->waiters_count; - if (retval == 0) { - --sem->count; - } - SDL_UnlockMutex(sem->count_lock); - - return retval; -} - -int -SDL_SemWait(SDL_sem * sem) -{ - return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT); -} - -Uint32 -SDL_SemValue(SDL_sem * sem) -{ - Uint32 value; - - value = 0; - if (sem) { - SDL_LockMutex(sem->count_lock); - value = sem->count; - SDL_UnlockMutex(sem->count_lock); - } - return value; -} - -int -SDL_SemPost(SDL_sem * sem) -{ - if (!sem) { - return SDL_SetError("Passed a NULL semaphore"); - } - - SDL_LockMutex(sem->count_lock); - if (sem->waiters_count > 0) { - SDL_CondSignal(sem->count_nonzero); - } - ++sem->count; - SDL_UnlockMutex(sem->count_lock); - - return 0; -} - -#endif /* SDL_THREADS_DISABLED */ -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread.c b/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread.c deleted file mode 100644 index 7a19b78..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" - -/* Thread management routines for SDL */ - -#include "SDL_thread.h" -#include "../SDL_systhread.h" - -#ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD -int -SDL_SYS_CreateThread(SDL_Thread * thread, void *args, - pfnSDL_CurrentBeginThread pfnBeginThread, - pfnSDL_CurrentEndThread pfnEndThread) -#else -int -SDL_SYS_CreateThread(SDL_Thread * thread, void *args) -#endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */ -{ - return SDL_SetError("Threads are not supported on this platform"); -} - -void -SDL_SYS_SetupThread(const char *name) -{ - return; -} - -SDL_threadID -SDL_ThreadID(void) -{ - return (0); -} - -int -SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority) -{ - return (0); -} - -void -SDL_SYS_WaitThread(SDL_Thread * thread) -{ - return; -} - -void -SDL_SYS_DetachThread(SDL_Thread * thread) -{ - return; -} - -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread_c.h b/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread_c.h deleted file mode 100644 index 13db579..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_systhread_c.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" - -/* Stub until we implement threads on this platform */ -typedef int SYS_ThreadHandle; - -/* vi: set ts=4 sw=4 expandtab: */ diff --git a/Source/3rdParty/SDL2/src/thread/generic/SDL_systls.c b/Source/3rdParty/SDL2/src/thread/generic/SDL_systls.c deleted file mode 100644 index 241862e..0000000 --- a/Source/3rdParty/SDL2/src/thread/generic/SDL_systls.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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" -#include "../SDL_thread_c.h" - - -SDL_TLSData * -SDL_SYS_GetTLSData(void) -{ - return SDL_Generic_GetTLSData(); -} - -int -SDL_SYS_SetTLSData(SDL_TLSData *data) -{ - return SDL_Generic_SetTLSData(data); -} - -/* vi: set ts=4 sw=4 expandtab: */ |