void LockStepTaskScheduler4ThreadsLocalCore::syncThreads(const size_t localThreadID) {
const unsigned int m = mode;
if (localThreadID == 0)
{
__memory_barrier();
threadState[m][localThreadID] = 1;
__memory_barrier();
while( (*(volatile unsigned int*)&threadState[m][0]) != 0x01010101 )
__pause(WAIT_CYCLES);
mode = 1 - mode;
__memory_barrier();
*(volatile unsigned int*)&threadState[m][0] = 0;
}
else
{
__memory_barrier();
threadState[m][localThreadID] = 1;
__memory_barrier();
while (threadState[m][localThreadID] == 1)
__pause(WAIT_CYCLES);
}
}
int main(){
Stack *topo;
topo=NULL;
system("clear");
_push(&topo,1);
_push(&topo,2);
_push(&topo,3);
printf("\n\n %i \n\n",sizeofStack(topo));
printStack(topo);
__pause();
_pop(&topo);
printStack(topo);
printf("\n\n %i \n\n",sizeofStack(topo));
__pause();
return 1;
}
void MutexActive::lock ()
{
while (1) {
while (flag == 1) __pause(1023); // read without atomic op first
if (cmpxchg(flag, 1, 0) == 0) break;
}
__memory_barrier(); // compiler must not schedule loads and stores around this point
}
int
_pause(void)
{
int ret;
_thread_enter_cancellation_point();
ret = __pause();
_thread_leave_cancellation_point();
return ret;
}
int
_pause(void)
{
struct pthread *curthread = _get_curthread();
int ret;
_thr_cancel_enter(curthread);
ret = __pause();
_thr_cancel_leave(curthread, 1);
return ret;
}
void
kernel_pause (void)
{
__pause ();
}
inline static void spinPause() { __pause(); }
