143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#if SDL_THREAD_VITA
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#include "SDL_systhread_c.h"
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#include <psp2/kernel/threadmgr.h>
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#include <psp2/kernel/error.h>
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struct SDL_mutex
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{
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SceKernelLwMutexWork lock;
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};
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/* Create a mutex */
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SDL_mutex *
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SDL_CreateMutex(void)
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{
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SDL_mutex *mutex = NULL;
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SceInt32 res = 0;
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/* Allocate mutex memory */
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mutex = (SDL_mutex *)SDL_malloc(sizeof(*mutex));
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if (mutex != NULL) {
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res = sceKernelCreateLwMutex(
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&mutex->lock,
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"SDL mutex",
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SCE_KERNEL_MUTEX_ATTR_RECURSIVE,
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0,
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NULL);
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if (res < 0) {
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SDL_SetError("Error trying to create mutex: %x", res);
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}
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} else {
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SDL_OutOfMemory();
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}
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return mutex;
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}
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/* Free the mutex */
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void SDL_DestroyMutex(SDL_mutex *mutex)
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{
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if (mutex != NULL) {
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sceKernelDeleteLwMutex(&mutex->lock);
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SDL_free(mutex);
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}
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}
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/* Lock the mutex */
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int SDL_LockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doesn't know about NULL mutexes */
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{
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#if SDL_THREADS_DISABLED
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return 0;
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#else
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SceInt32 res = 0;
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if (mutex == NULL) {
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return 0;
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}
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res = sceKernelLockLwMutex(&mutex->lock, 1, NULL);
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if (res != SCE_KERNEL_OK) {
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return SDL_SetError("Error trying to lock mutex: %x", res);
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}
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return 0;
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#endif /* SDL_THREADS_DISABLED */
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}
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/* Try to lock the mutex */
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int SDL_TryLockMutex(SDL_mutex *mutex)
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{
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#if SDL_THREADS_DISABLED
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return 0;
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#else
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SceInt32 res = 0;
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if (mutex == NULL) {
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return 0;
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}
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res = sceKernelTryLockLwMutex(&mutex->lock, 1);
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switch (res) {
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case SCE_KERNEL_OK:
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return 0;
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break;
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case SCE_KERNEL_ERROR_MUTEX_FAILED_TO_OWN:
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return SDL_MUTEX_TIMEDOUT;
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break;
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default:
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return SDL_SetError("Error trying to lock mutex: %x", res);
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break;
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}
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return -1;
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#endif /* SDL_THREADS_DISABLED */
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}
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/* Unlock the mutex */
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int SDL_UnlockMutex(SDL_mutex *mutex) SDL_NO_THREAD_SAFETY_ANALYSIS /* clang doesn't know about NULL mutexes */
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{
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#if SDL_THREADS_DISABLED
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return 0;
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#else
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SceInt32 res = 0;
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if (mutex == NULL) {
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return 0;
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}
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res = sceKernelUnlockLwMutex(&mutex->lock, 1);
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if (res != 0) {
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return SDL_SetError("Error trying to unlock mutex: %x", res);
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}
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return 0;
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#endif /* SDL_THREADS_DISABLED */
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}
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#endif /* SDL_THREAD_VITA */
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