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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| #ifndef _THREADPOOL_H_ | ||
| #define _THREADPOOL_H_ | ||
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| #ifdef BUILD_ON_WINDOWS | ||
| typedef HANDLE gwtthread_t; | ||
| typedef PCRITICAL_SECTION gwtmutex_t; | ||
| typedef PCONDITION_VARIABLE gwtcond_t; | ||
| typedef long unsigned gwtreturn_t; | ||
| #else | ||
| #include <pthread.h> | ||
| typedef pthread_t gwtthread_t; | ||
| typedef pthread_mutex_t gwtlock_t; | ||
| typedef pthread_cond_t gwtcond_t; | ||
| typedef void* gwtreturn_t; | ||
| #endif | ||
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| typedef struct threadpool_t threadpool_t; | ||
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| typedef enum { | ||
| threadpool_lock_failure = -2, | ||
| threadpool_queue_full = -3, | ||
| threadpool_shutdown = -4, | ||
| threadpool_thread_failure = -5 | ||
| } threadpool_error_t; | ||
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| threadpool_t *new_threadpool(const uint32_t thread_count, const uint32_t queue_size); | ||
| ANN2(1, 2) bool threadpool_add(threadpool_t *pool, void (*routine)(void *), void *arg); | ||
| ANN void free_threadpool(threadpool_t *pool); | ||
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| #ifdef BUILD_ON_WINDOWS | ||
| ANN static inline void gwt_lock(threadpool_t *pool) { | ||
| EnterCriticalSection(&pool->lock); // void | ||
| } | ||
| ANN static inline void gwt_unlock(threadpool_t *pool) { | ||
| LeaveCriticalSection(&pool->lock); // void | ||
| } | ||
| ANN static inline void gwt_wait(gwtcond_t *cond, gwtlock_t *lock) { | ||
| SleepConditionVariableCS(cond, lock, INFINITE); // bool | ||
| } | ||
| ANN static inline void gwt_broadcast(threadpool_t *pool) { | ||
| WakeAllConditionVariable(&pool->cond); // void | ||
| } | ||
| ANN static inline void gwt_signal(threadpool_t *pool) { | ||
| return WakeConditionVariable(&pool->cond); // void | ||
| } | ||
| ANN static inline void gwt_create(gwtthread_t *thread, void* (*fun)(void*), void *arg) { | ||
| *thread = CreateThread(NULL, 0, func, arg, 0, NULL); | ||
| } | ||
| ANN static inline void gwt_join(gwtthread_t thread) { | ||
| WaitForSingleObject(thread, INFINITE); // dword // (DWORD)0xFFFFFFFF on error | ||
| } | ||
| ANN static inline void gwt_lock_end(gwtlock_t *lock) { | ||
| return DeleteCriticalSection(*lock); | ||
| } | ||
| ANN static inline void gwt_cond_end(gwtcond_t *cond) {} | ||
| #else | ||
| ANN static inline int gwt_lock(gwtlock_t *lock) { | ||
| return pthread_mutex_lock(lock); | ||
| } | ||
| ANN static inline int gwt_unlock(gwtlock_t *lock) { | ||
| return pthread_mutex_unlock(lock); | ||
| } | ||
| ANN static inline void gwt_join(gwtthread_t thread) { | ||
| pthread_join(thread, NULL); | ||
| } | ||
| ANN static inline void gwt_wait(gwtcond_t *cond, gwtlock_t *lock) { | ||
| pthread_cond_wait(cond, lock); | ||
| } | ||
| ANN static inline void gwt_broadcast(gwtcond_t *cond) { | ||
| pthread_cond_broadcast(cond); | ||
| } | ||
| ANN static inline int gwt_signal(gwtcond_t *cond) { | ||
| return pthread_cond_signal(cond); | ||
| } | ||
| ANN static inline int gwt_lock_ini(gwtlock_t *lock) { | ||
| pthread_mutexattr_t attr; | ||
| pthread_mutexattr_init(&attr); | ||
| pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | ||
| return pthread_mutex_init(lock, &attr); | ||
| } | ||
| ANN static inline void gwt_lock_end(gwtlock_t *lock) { | ||
| pthread_mutex_destroy(lock); // int | ||
| } | ||
| ANN static inline int gwt_cond_ini(gwtcond_t *cond) { | ||
| return pthread_cond_init(cond, NULL); | ||
| } | ||
| ANN static inline void gwt_cond_end(gwtcond_t *cond) { | ||
| pthread_cond_destroy(cond); // int | ||
| } | ||
| ANN static inline bool gwt_create(gwtthread_t *thread, gwtreturn_t (*fun)(void*), void *arg) { | ||
| return !pthread_create(thread, NULL, fun, arg); // int | ||
| } | ||
| #endif | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| #include "gwion_util.h" | ||
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| typedef struct { | ||
| void (*fun)(void *); | ||
| void *arg; | ||
| } task_t; | ||
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| struct threadpool_t { | ||
| gwtlock_t lock; | ||
| gwtcond_t cond; | ||
| gwtthread_t *threads; | ||
| task_t *queue; | ||
| uint32_t head; | ||
| uint32_t tail; | ||
| uint32_t active; | ||
| uint32_t queue_size; | ||
| uint32_t started; | ||
| bool shutdown; | ||
| bool has_lock; | ||
| bool has_cond; | ||
| }; | ||
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| ANN static gwtreturn_t threadpool_thread(void *data) { | ||
| threadpool_t *p = (threadpool_t *)data; | ||
| while(true) { | ||
| (void)gwt_lock(&p->lock); | ||
| while(!p->active && !p->shutdown) | ||
| (void)gwt_wait(&p->cond, &p->lock); | ||
| if(p->shutdown) break; | ||
| task_t task = p->queue[p->head]; | ||
| p->head = (p->head + 1) % p->queue_size; | ||
| p->active--; | ||
| (void)gwt_unlock(&p->lock); | ||
| task.fun(task.arg); | ||
| } | ||
| (void)gwt_unlock(&p->lock); | ||
| THREAD_RETURN(NULL); | ||
| } | ||
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| ANN static bool alloc(threadpool_t *p, const uint32_t thread_count, | ||
| const uint32_t queue_size) { | ||
| return !(p->threads = malloc(thread_count * sizeof(gwtthread_t))) || | ||
| !(p->queue = malloc(queue_size * sizeof(task_t))); | ||
| } | ||
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| ANN static bool utils(threadpool_t *p) { | ||
| if(gwt_lock_ini(&p->lock)) return false; | ||
| p->has_lock = true; | ||
| if(gwt_cond_ini(&p->cond)) return false; | ||
| p->has_cond = true; | ||
| return true; | ||
| } | ||
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| ANN static bool start(threadpool_t *p, const uint32_t thread_count) { | ||
| for(uint32_t i = 0; i < thread_count; i++) { | ||
| if(gwt_create(&p->threads[i], threadpool_thread, p)) | ||
| return false; | ||
| p->started++; | ||
| } | ||
| return true; | ||
| } | ||
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| threadpool_t *new_threadpool(const uint32_t thread_count, const uint32_t queue_size) { | ||
| threadpool_t *p = malloc(sizeof(threadpool_t)); | ||
| if(!p) return NULL; | ||
| p->head = p->tail = p->active = 0; | ||
| p->shutdown = p->has_lock = p->has_cond = false; | ||
| p->started = 0; | ||
| if(alloc(p, thread_count, queue_size) || !utils(p) || | ||
| start(p, thread_count)) { | ||
| free_threadpool(p); | ||
| return NULL; | ||
| } | ||
| return p; | ||
| } | ||
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| ANN2(1, 2) static bool add(threadpool_t *p, void (*fun)(void *), void *arg) { | ||
| if(unlikely(p->shutdown || p->active == p->queue_size)) | ||
| return false; | ||
| const uint32_t next = (p->tail + 1) % p->queue_size; | ||
| task_t t = { .fun = fun, .arg = arg }; | ||
| p->queue[p->tail] = t; | ||
| p->tail = next; | ||
| p->active++; | ||
| (void)gwt_signal(&p->cond); | ||
| return true; | ||
| } | ||
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| bool threadpool_add(threadpool_t *p, void (*fun)(void *), void *arg) { | ||
| (void)gwt_lock(&p->lock); | ||
| const bool ret = add(p, fun, arg); | ||
| (void)gwt_unlock(&p->lock); | ||
| return ret; | ||
| } | ||
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| ANN void free_threadpool(threadpool_t *p) { | ||
| (void)gwt_lock(&p->lock); | ||
| p->shutdown = true; | ||
| gwt_broadcast(&p->cond); | ||
| (void)gwt_unlock(&p->lock); | ||
| if(p->threads) { | ||
| for(uint32_t i = 0; i < p->started; i++) | ||
| gwt_join(p->threads[i]); | ||
| free(p->threads); | ||
| } | ||
| if(p->queue) free(p->queue); | ||
| if(p->has_lock) gwt_lock_end(&p->lock); | ||
| if(p->has_cond) gwt_cond_end(&p->cond); | ||
| } |