mirror of https://github.com/mgba-emu/mgba.git
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
/* Copyright (c) 2013-2015 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef N3DS_THREADING_H
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#define N3DS_THREADING_H
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#include <mgba-util/common.h>
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#include <3ds.h>
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#include <malloc.h>
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#ifdef _3DS
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// ctrulib already has a type called Thread
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#define Thread CustomThread
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#endif
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#define THREAD_ENTRY void
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typedef ThreadFunc ThreadEntry;
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typedef struct {
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Handle handle;
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u8* stack;
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} Thread;
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typedef LightLock Mutex;
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typedef struct {
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Mutex mutex;
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Handle semaphore;
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u32 waiting;
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} Condition;
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static inline int MutexInit(Mutex* mutex) {
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LightLock_Init(mutex);
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return 0;
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}
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static inline int MutexDeinit(Mutex* mutex) {
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UNUSED(mutex);
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return 0;
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}
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static inline int MutexLock(Mutex* mutex) {
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LightLock_Lock(mutex);
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return 0;
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}
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static inline int MutexTryLock(Mutex* mutex) {
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return LightLock_TryLock(mutex);
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}
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static inline int MutexUnlock(Mutex* mutex) {
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LightLock_Unlock(mutex);
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return 0;
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}
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static inline int ConditionInit(Condition* cond) {
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Result res = MutexInit(&cond->mutex);
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if (res) {
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return res;
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}
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res = svcCreateSemaphore(&cond->semaphore, 0, 1);
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cond->waiting = 0;
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return res;
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}
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static inline int ConditionDeinit(Condition* cond) {
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return svcCloseHandle(cond->semaphore);
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}
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static inline int ConditionWait(Condition* cond, Mutex* mutex) {
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MutexLock(&cond->mutex);
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++cond->waiting;
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MutexUnlock(mutex);
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MutexUnlock(&cond->mutex);
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svcWaitSynchronization(cond->semaphore, U64_MAX);
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MutexLock(mutex);
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return 0;
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}
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static inline int ConditionWaitTimed(Condition* cond, Mutex* mutex, int32_t timeoutMs) {
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MutexLock(&cond->mutex);
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++cond->waiting;
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MutexUnlock(mutex);
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MutexUnlock(&cond->mutex);
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svcWaitSynchronization(cond->semaphore, timeoutMs * 10000000LL);
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MutexLock(mutex);
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return 0;
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}
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static inline int ConditionWake(Condition* cond) {
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MutexLock(&cond->mutex);
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if (cond->waiting) {
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--cond->waiting;
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s32 count = 0;
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svcReleaseSemaphore(&count, cond->semaphore, 1);
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}
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MutexUnlock(&cond->mutex);
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return 0;
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}
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static inline int ThreadCreate(Thread* thread, ThreadEntry entry, void* context) {
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if (!entry || !thread) {
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return 1;
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}
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thread->stack = memalign(8, 0x8000);
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if (!thread->stack) {
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return 1;
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}
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bool isNew3DS;
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APT_CheckNew3DS(&isNew3DS);
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if (isNew3DS && svcCreateThread(&thread->handle, entry, (u32) context, (u32*) &thread->stack[0x8000], 0x18, 2) == 0) {
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return 0;
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}
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return svcCreateThread(&thread->handle, entry, (u32) context, (u32*) &thread->stack[0x8000], 0x18, -1);
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}
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static inline int ThreadJoin(Thread thread) {
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svcWaitSynchronization(thread.handle, U64_MAX);
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free(thread.stack);
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return 0;
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}
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static inline void ThreadSetName(const char* name) {
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UNUSED(name);
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// Unimplemented
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}
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#endif
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