//Thread queue for keeping track of threads waiting to run
thread_queue_t ready_queue;
+#ifdef TOSTHREADS_TIMER_OPTIMIZATION
void task timerTask() {
uint8_t temp;
atomic temp = num_runnable_threads;
if(temp > 1)
call PreemptionAlarm.startOneShot(TOSTHREAD_PREEMPTION_PERIOD);
}
+#endif
/* switch_threads()
* This routine swaps the stack and allows a thread to run.
void suspend(thread_t* thread) {
//if there are no active threads, put the MCU to sleep
//Then wakeup the TinyOS thread whenever the MCU wakes up again
- num_runnable_threads--;
- post timerTask();
+ #ifdef TOSTHREADS_TIMER_OPTIMIZATION
+ num_runnable_threads--;
+ post timerTask();
+ #endif
sleepWhileIdle();
interrupt(thread);
}
* and decrementing any necessary variables used to keep track of
* threads by the thread scheduler.
*/
- void stop(thread_t* t) {
- int i;
- t->state = TOSTHREAD_STATE_INACTIVE;
- num_runnable_threads--;
- post timerTask();
- for(i=0; i<TOSTHREAD_MAX_NUM_THREADS; i++) {
- if(call BitArrayUtils.getBit(t->joinedOnMe, i))
- call ThreadScheduler.wakeupThread(i);
- }
- signal ThreadCleanup.cleanup[t->id]();
- }
+ void stop(thread_t* t) {
+ int i;
+ t->state = TOSTHREAD_STATE_INACTIVE;
+ #ifdef TOSTHREADS_TIMER_OPTIMIZATION
+ num_runnable_threads--;
+ post timerTask();
+ #endif
+ for(i=0; i<TOSTHREAD_MAX_NUM_THREADS; i++) {
+ if(call BitArrayUtils.getBit(t->joinedOnMe, i))
+ call ThreadScheduler.wakeupThread(i);
+ }
+ signal ThreadCleanup.cleanup[t->id]();
+ }
/* This executes and cleans up a thread
*/
if(t->state == TOSTHREAD_STATE_INACTIVE) {
t->state = TOSTHREAD_STATE_READY;
call ThreadQueue.enqueue(&ready_queue, t);
- num_runnable_threads++;
- post timerTask();
+ #ifdef TOSTHREADS_TIMER_OPTIMIZATION
+ num_runnable_threads++;
+ post timerTask();
+ #endif
return SUCCESS;
}
}
thread_t* t = call ThreadInfo.get[id]();
if((t->state) == TOSTHREAD_STATE_SUSPENDED) {
t->state = TOSTHREAD_STATE_READY;
- if(t != tos_thread) {
- call ThreadQueue.enqueue(&ready_queue, call ThreadInfo.get[id]());
- atomic num_runnable_threads++;
- post timerTask();
- }
+ if(t != tos_thread) {
+ call ThreadQueue.enqueue(&ready_queue, call ThreadInfo.get[id]());
+ #ifdef TOSTHREADS_TIMER_OPTIMIZATION
+ atomic num_runnable_threads++;
+ post timerTask();
+ #endif
+ }
return SUCCESS;
}
return FAIL;