46     SDL_cond *cond;  in SDL_CreateCond()  local
48     cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));  in SDL_CreateCond()
49     if (cond) {  in SDL_CreateCond()
50         cond->lock = SDL_CreateMutex();  in SDL_CreateCond()
51         cond->wait_sem = SDL_CreateSemaphore(0);  in SDL_CreateCond()
52         cond->wait_done = SDL_CreateSemaphore(0);  in SDL_CreateCond()
53         cond->waiting = cond->signals = 0;  in SDL_CreateCond()
54         if (!cond->lock || !cond->wait_sem || !cond->wait_done) {  in SDL_CreateCond()
55             SDL_DestroyCond(cond);  in SDL_CreateCond()
56             cond = NULL;  in SDL_CreateCond()
61     return (cond);  in SDL_CreateCond()
66 SDL_DestroyCond(SDL_cond * cond)  in SDL_DestroyCond()  argument
68     if (cond) {  in SDL_DestroyCond()
69         if (cond->wait_sem) {  in SDL_DestroyCond()
70             SDL_DestroySemaphore(cond->wait_sem);  in SDL_DestroyCond()
72         if (cond->wait_done) {  in SDL_DestroyCond()
73             SDL_DestroySemaphore(cond->wait_done);  in SDL_DestroyCond()
75         if (cond->lock) {  in SDL_DestroyCond()
76             SDL_DestroyMutex(cond->lock);  in SDL_DestroyCond()
78         SDL_free(cond);  in SDL_DestroyCond()
84 SDL_CondSignal(SDL_cond * cond)  in SDL_CondSignal()  argument
86     if (!cond) {  in SDL_CondSignal()
93     SDL_LockMutex(cond->lock);  in SDL_CondSignal()
94     if (cond->waiting > cond->signals) {  in SDL_CondSignal()
95         ++cond->signals;  in SDL_CondSignal()
96         SDL_SemPost(cond->wait_sem);  in SDL_CondSignal()
97         SDL_UnlockMutex(cond->lock);  in SDL_CondSignal()
98         SDL_SemWait(cond->wait_done);  in SDL_CondSignal()
100         SDL_UnlockMutex(cond->lock);  in SDL_CondSignal()
108 SDL_CondBroadcast(SDL_cond * cond)  in SDL_CondBroadcast()  argument
110     if (!cond) {  in SDL_CondBroadcast()
117     SDL_LockMutex(cond->lock);  in SDL_CondBroadcast()
118     if (cond->waiting > cond->signals) {  in SDL_CondBroadcast()
121         num_waiting = (cond->waiting - cond->signals);  in SDL_CondBroadcast()
122         cond->signals = cond->waiting;  in SDL_CondBroadcast()
124             SDL_SemPost(cond->wait_sem);  in SDL_CondBroadcast()
129         SDL_UnlockMutex(cond->lock);  in SDL_CondBroadcast()
131             SDL_SemWait(cond->wait_done);  in SDL_CondBroadcast()
134         SDL_UnlockMutex(cond->lock);  in SDL_CondBroadcast()
162 SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)  in SDL_CondWaitTimeout()  argument
166     if (!cond) {  in SDL_CondWaitTimeout()
174     SDL_LockMutex(cond->lock);  in SDL_CondWaitTimeout()
175     ++cond->waiting;  in SDL_CondWaitTimeout()
176     SDL_UnlockMutex(cond->lock);  in SDL_CondWaitTimeout()
183         retval = SDL_SemWait(cond->wait_sem);  in SDL_CondWaitTimeout()
185         retval = SDL_SemWaitTimeout(cond->wait_sem, ms);  in SDL_CondWaitTimeout()
194     SDL_LockMutex(cond->lock);  in SDL_CondWaitTimeout()
195     if (cond->signals > 0) {  in SDL_CondWaitTimeout()
198             SDL_SemWait(cond->wait_sem);  in SDL_CondWaitTimeout()
201         SDL_SemPost(cond->wait_done);  in SDL_CondWaitTimeout()
204         --cond->signals;  in SDL_CondWaitTimeout()
206     --cond->waiting;  in SDL_CondWaitTimeout()
207     SDL_UnlockMutex(cond->lock);  in SDL_CondWaitTimeout()
217 SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex)  in SDL_CondWait()  argument
219     return SDL_CondWaitTimeout(cond, mutex, SDL_MUTEX_MAXWAIT);  in SDL_CondWait()