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SDL_DestroySemaphore

Use this function to destroy a semaphore.

Syntax

void SDL_DestroySemaphore(SDL_sem* sem)

Function Parameters

sem

the semaphore to destroy

Code Examples

Typical use of semaphores:

SDL_atomic_t done;
SDL_sem *sem;

SDL_AtomicSet(&done, 0);
sem = SDL_CreateSemaphore(0);
.
.
Thread A:
    while (!SDL_AtomicGet(&done)) {
        add_data_to_queue();
        SDL_SemPost(sem);
    }

Thread B:
    while (!SDL_AtomicGet(&done)) {
        SDL_SemWait(sem);
        if (data_available()) {
            get_data_from_queue();
        }
    }
.
.
SDL_AtomicSet(&done, 1);
SDL_SemPost(sem);
wait_for_threads();
SDL_DestroySemaphore(sem);

Remarks

It is not safe to destroy a semaphore if there are threads currently waiting on it.


CategoryAPI, CategoryMutex

None: SDL_DestroySemaphore (last edited 2013-08-12 05:44:22 by Sam Lantinga)

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