mutex.c

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#include <stdbool.h>
#include <stdint.h>
 
#include <syscall.h>
#include <core/mutex.h>
 
void
CoreMutex_Init(CoreMutex *mtx)
{
    mtx->lock = 0;
}
 
 
void
CoreMutex_Lock(CoreMutex *mtx)
{
    while (__sync_lock_test_and_set(&mtx->lock, 1) == 1) {
        OSThreadSleep(0);
    }
}
 
bool
CoreMutex_TryLock(CoreMutex *mtx)
{
    if (__sync_lock_test_and_set(&mtx->lock, 1) == 1) {
        return false;
    } else {
        return true;
    }
}
 
void
CoreMutex_Unlock(CoreMutex *mtx)
{
    __sync_lock_release(&mtx->lock);
}