40 SDL_DestroySemaphore(SDL_sem * sem)  in SDL_DestroySemaphore()  argument
45 SDL_SemTryWait(SDL_sem * sem)  in SDL_SemTryWait()  argument
51 SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)  in SDL_SemWaitTimeout()  argument
57 SDL_SemWait(SDL_sem * sem)  in SDL_SemWait()  argument
63 SDL_SemValue(SDL_sem * sem)  in SDL_SemValue()  argument
69 SDL_SemPost(SDL_sem * sem)  in SDL_SemPost()  argument
87     SDL_sem *sem;  in SDL_CreateSemaphore()  local
89     sem = (SDL_sem *) SDL_malloc(sizeof(*sem));  in SDL_CreateSemaphore()
90     if (!sem) {  in SDL_CreateSemaphore()
94     sem->count = initial_value;  in SDL_CreateSemaphore()
95     sem->waiters_count = 0;  in SDL_CreateSemaphore()
97     sem->count_lock = SDL_CreateMutex();  in SDL_CreateSemaphore()
98     sem->count_nonzero = SDL_CreateCond();  in SDL_CreateSemaphore()
99     if (!sem->count_lock || !sem->count_nonzero) {  in SDL_CreateSemaphore()
100         SDL_DestroySemaphore(sem);  in SDL_CreateSemaphore()
104     return sem;  in SDL_CreateSemaphore()
111 SDL_DestroySemaphore(SDL_sem * sem)  in SDL_DestroySemaphore()  argument
113     if (sem) {  in SDL_DestroySemaphore()
114         sem->count = 0xFFFFFFFF;  in SDL_DestroySemaphore()
115         while (sem->waiters_count > 0) {  in SDL_DestroySemaphore()
116             SDL_CondSignal(sem->count_nonzero);  in SDL_DestroySemaphore()
119         SDL_DestroyCond(sem->count_nonzero);  in SDL_DestroySemaphore()
120         if (sem->count_lock) {  in SDL_DestroySemaphore()
121             SDL_LockMutex(sem->count_lock);  in SDL_DestroySemaphore()
122             SDL_UnlockMutex(sem->count_lock);  in SDL_DestroySemaphore()
123             SDL_DestroyMutex(sem->count_lock);  in SDL_DestroySemaphore()
125         SDL_free(sem);  in SDL_DestroySemaphore()
130 SDL_SemTryWait(SDL_sem * sem)  in SDL_SemTryWait()  argument
134     if (!sem) {  in SDL_SemTryWait()
139     SDL_LockMutex(sem->count_lock);  in SDL_SemTryWait()
140     if (sem->count > 0) {  in SDL_SemTryWait()
141         --sem->count;  in SDL_SemTryWait()
144     SDL_UnlockMutex(sem->count_lock);  in SDL_SemTryWait()
150 SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)  in SDL_SemWaitTimeout()  argument
154     if (!sem) {  in SDL_SemWaitTimeout()
160         return SDL_SemTryWait(sem);  in SDL_SemWaitTimeout()
163     SDL_LockMutex(sem->count_lock);  in SDL_SemWaitTimeout()
164     ++sem->waiters_count;  in SDL_SemWaitTimeout()
166     while ((sem->count == 0) && (retval != SDL_MUTEX_TIMEDOUT)) {  in SDL_SemWaitTimeout()
167         retval = SDL_CondWaitTimeout(sem->count_nonzero,  in SDL_SemWaitTimeout()
168                                      sem->count_lock, timeout);  in SDL_SemWaitTimeout()
170     --sem->waiters_count;  in SDL_SemWaitTimeout()
172         --sem->count;  in SDL_SemWaitTimeout()
174     SDL_UnlockMutex(sem->count_lock);  in SDL_SemWaitTimeout()
180 SDL_SemWait(SDL_sem * sem)  in SDL_SemWait()  argument
182     return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT);  in SDL_SemWait()
186 SDL_SemValue(SDL_sem * sem)  in SDL_SemValue()  argument
191     if (sem) {  in SDL_SemValue()
192         SDL_LockMutex(sem->count_lock);  in SDL_SemValue()
193         value = sem->count;  in SDL_SemValue()
194         SDL_UnlockMutex(sem->count_lock);  in SDL_SemValue()
200 SDL_SemPost(SDL_sem * sem)  in SDL_SemPost()  argument
202     if (!sem) {  in SDL_SemPost()
206     SDL_LockMutex(sem->count_lock);  in SDL_SemPost()
207     if (sem->waiters_count > 0) {  in SDL_SemPost()
208         SDL_CondSignal(sem->count_nonzero);  in SDL_SemPost()
210     ++sem->count;  in SDL_SemPost()
211     SDL_UnlockMutex(sem->count_lock);  in SDL_SemPost()