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Implemented SDL_SetThreadPriority()

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This commit is contained in:
Sam Lantinga 2011-03-25 10:47:49 -07:00
parent 0b1225e301
commit bca33709c6
12 changed files with 122 additions and 13 deletions
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27
src/thread/pthread/SDL_systhread.c
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@ -91,6 +91,33 @@ SDL_ThreadID(void)
return ((SDL_threadID) pthread_self());
}
int
SDL_SYS_SetThreadPriority(SDL_Thread * thread, SDL_ThreadPriority priority)
{
struct sched_param sched;
int policy;
if (pthread_getschedparam(thread->handle, &policy, &sched) < 0) {
SDL_SetError("pthread_getschedparam() failed");
return -1;
}
if (priority == SDL_THREAD_PRIORITY_LOW) {
sched.sched_priority = sched_get_priority_min(policy);
} else if (priority == SDL_THREAD_PRIORITY_HIGH) {
sched.sched_priority = sched_get_priority_max(policy);
} else {
int min_priority = sched_get_priority_min(policy);
int max_priority = sched_get_priority_max(policy);
int priority = (min_priority + (max_priority - min_priority) / 2);
sched.sched_priority = priority;
}
if (pthread_setschedparam(thread->handle, policy, &sched) < 0) {
SDL_SetError("pthread_setschedparam() failed");
return -1;
}
return 0;
}
void
SDL_SYS_WaitThread(SDL_Thread * thread)
{