int TryEnterDebugSection(void)
{
if(AtomicCompareExchange(
&debug_state,
DEBUG_FREE,
DEBUG_BUSY) == DEBUG_FREE){
if(__DEBUG){
return 1;
}
AtomicCompareExchange( &debug_state, DEBUG_BUSY, DEBUG_FREE);
}
return 0;
}
void testAtomicOps() {
volatile esint32 key = 0;
EAssert(AtomicIncrement(&key) == 1, "key != 1");
EAssert(AtomicDecrement(&key) == 0, "key != 0");
AtomicCompareExchange(1, 0, &key);
EAssert(AtomicIncrement(&key) == 2, "key != 2");
}
int TryLockPython(void)
{
return AtomicCompareExchange(
&python_state,
PYTHON_FREE,
PYTHON_BUSY) == PYTHON_FREE;
}
int suspendDebug(int disable)
{
char cmd = DEBUG_UNLOCK;
if (PLC_shutdown) return -1;
while(AtomicCompareExchange(
&debug_state,
DEBUG_FREE,
DEBUG_BUSY) != DEBUG_FREE &&
cmd == DEBUG_UNLOCK){
if(read(Debug_pipe_fd, &cmd, sizeof(cmd)) != sizeof(cmd)){
return -1;
}
}
__DEBUG = !disable;
if (disable)
AtomicCompareExchange( &debug_state, DEBUG_BUSY, DEBUG_FREE);
return 0;
}
void LeaveDebugSection(void)
{
if(AtomicCompareExchange( &debug_state,
DEBUG_BUSY, DEBUG_FREE) == DEBUG_BUSY){
char msg = DEBUG_UNLOCK;
/* signal to NRT for wakeup */
rt_pipe_write(&Debug_pipe, &msg, sizeof(msg), P_NORMAL);
}
}
void UnLockPython(void)
{
if(AtomicCompareExchange(
&python_state,
PYTHON_BUSY,
PYTHON_FREE) == PYTHON_BUSY){
if(rt_task_self()){/*is that the real time task ?*/
char cmd = UNLOCK_PYTHON;
rt_pipe_write(&Python_pipe, &cmd, sizeof(cmd), P_NORMAL);
}/* otherwise, no signaling from non real time */
} /* as plc does not wait for lock. */
}
void LockPython(void)
{
char cmd = UNLOCK_PYTHON;
if (PLC_shutdown) return;
while(AtomicCompareExchange(
&python_state,
PYTHON_FREE,
PYTHON_BUSY) != PYTHON_FREE &&
cmd == UNLOCK_PYTHON){
read(Python_pipe_fd, &cmd, sizeof(cmd));
}
}
void OpenSLPlayer::pause() {
lock();
accessTime = currentTimeMillis();
if (player == NULL) {
unlock();
return;
}
AtomicCompareExchange(&state, SL_PLAYSTATE_PAUSED, SL_PLAYSTATE_PLAYING);
//SLresult result;
/*result = */(*player)->SetPlayState(player, SL_PLAYSTATE_PAUSED);
unlock();
}
void resumeDebug(void)
{
AtomicCompareExchange( &debug_state, DEBUG_BUSY, DEBUG_FREE);
}
