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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401938
This commit is contained in:
Sam Lantinga 2006-07-10 21:04:37 +00:00
parent 91a32b77a2
commit 0f030a1802
686 changed files with 117556 additions and 98661 deletions
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176
src/thread/pthread/SDL_syscond.c
View file

@ -31,125 +31,133 @@
struct SDL_cond
{
pthread_cond_t cond;
pthread_cond_t cond;
};
/* Create a condition variable */
SDL_cond * SDL_CreateCond(void)
SDL_cond *
SDL_CreateCond(void)
{
SDL_cond *cond;
SDL_cond *cond;
cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
if ( cond ) {
if ( pthread_cond_init(&cond->cond, NULL) < 0 ) {
SDL_SetError("pthread_cond_init() failed");
SDL_free(cond);
cond = NULL;
}
}
return(cond);
cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
if (cond) {
if (pthread_cond_init(&cond->cond, NULL) < 0) {
SDL_SetError("pthread_cond_init() failed");
SDL_free(cond);
cond = NULL;
}
}
return (cond);
}
/* Destroy a condition variable */
void SDL_DestroyCond(SDL_cond *cond)
void
SDL_DestroyCond(SDL_cond * cond)
{
if ( cond ) {
pthread_cond_destroy(&cond->cond);
SDL_free(cond);
}
if (cond) {
pthread_cond_destroy(&cond->cond);
SDL_free(cond);
}
}
/* Restart one of the threads that are waiting on the condition variable */
int SDL_CondSignal(SDL_cond *cond)
int
SDL_CondSignal(SDL_cond * cond)
{
int retval;
int retval;
if ( ! cond ) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
if (!cond) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
retval = 0;
if ( pthread_cond_signal(&cond->cond) != 0 ) {
SDL_SetError("pthread_cond_signal() failed");
retval = -1;
}
return retval;
retval = 0;
if (pthread_cond_signal(&cond->cond) != 0) {
SDL_SetError("pthread_cond_signal() failed");
retval = -1;
}
return retval;
}
/* Restart all threads that are waiting on the condition variable */
int SDL_CondBroadcast(SDL_cond *cond)
int
SDL_CondBroadcast(SDL_cond * cond)
{
int retval;
int retval;
if ( ! cond ) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
if (!cond) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
retval = 0;
if ( pthread_cond_broadcast(&cond->cond) != 0 ) {
SDL_SetError("pthread_cond_broadcast() failed");
retval = -1;
}
return retval;
retval = 0;
if (pthread_cond_broadcast(&cond->cond) != 0) {
SDL_SetError("pthread_cond_broadcast() failed");
retval = -1;
}
return retval;
}
int SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms)
int
SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)
{
int retval;
struct timeval delta;
struct timespec abstime;
int retval;
struct timeval delta;
struct timespec abstime;
if ( ! cond ) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
if (!cond) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
gettimeofday(&delta, NULL);
gettimeofday(&delta, NULL);
abstime.tv_sec = delta.tv_sec + (ms/1000);
abstime.tv_nsec = (delta.tv_usec + (ms%1000) * 1000) * 1000;
if ( abstime.tv_nsec > 1000000000 ) {
abstime.tv_sec += 1;
abstime.tv_nsec -= 1000000000;
}
abstime.tv_sec = delta.tv_sec + (ms / 1000);
abstime.tv_nsec = (delta.tv_usec + (ms % 1000) * 1000) * 1000;
if (abstime.tv_nsec > 1000000000) {
abstime.tv_sec += 1;
abstime.tv_nsec -= 1000000000;
}
tryagain:
retval = pthread_cond_timedwait(&cond->cond, &mutex->id, &abstime);
switch (retval) {
case EINTR:
goto tryagain;
break;
case ETIMEDOUT:
retval = SDL_MUTEX_TIMEDOUT;
break;
case 0:
break;
default:
SDL_SetError("pthread_cond_timedwait() failed");
retval = -1;
break;
}
return retval;
retval = pthread_cond_timedwait(&cond->cond, &mutex->id, &abstime);
switch (retval) {
case EINTR:
goto tryagain;
break;
case ETIMEDOUT:
retval = SDL_MUTEX_TIMEDOUT;
break;
case 0:
break;
default:
SDL_SetError("pthread_cond_timedwait() failed");
retval = -1;
break;
}
return retval;
}
/* Wait on the condition variable, unlocking the provided mutex.
The mutex must be locked before entering this function!
*/
int SDL_CondWait(SDL_cond *cond, SDL_mutex *mutex)
int
SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex)
{
int retval;
int retval;
if ( ! cond ) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
if (!cond) {
SDL_SetError("Passed a NULL condition variable");
return -1;
}
retval = 0;
if ( pthread_cond_wait(&cond->cond, &mutex->id) != 0 ) {
SDL_SetError("pthread_cond_wait() failed");
retval = -1;
}
return retval;
retval = 0;
if (pthread_cond_wait(&cond->cond, &mutex->id) != 0) {
SDL_SetError("pthread_cond_wait() failed");
retval = -1;
}
return retval;
}
/* vi: set ts=4 sw=4 expandtab: */