/*
* nk_thread_exit
*
* exit from this thread
*
* @retval: the value to return to the parent
*
* If there is someone waiting on this thread, this
* function will wake them up. This will also call
* any destructors for thread local storage
*
*/
void
nk_thread_exit (void * retval)
{
nk_thread_t * me = get_cur_thread();
/* clear any thread local storage that may have been allocated */
tls_exit();
while (__sync_lock_test_and_set(&me->lock, 1));
/* wait for my children to finish */
nk_join_all_children(NULL);
me->output = retval;
me->status = NK_THR_EXITED;
/* wake up everyone who is waiting on me */
nk_wake_waiters();
me->refcount--;
SCHED_DEBUG("Thread %p (tid=%u) exiting, joining with children\n", me, me->tid);
__sync_lock_release(&me->lock);
cli();
nk_schedule();
/* we should never get here! */
panic("Should never get here!\n");
}
/*
* Called once (from main) to clean up STM infrastructure.
*/
_CALLCONV void
stm_exit(void)
{
PRINT_DEBUG("==> stm_exit()\n");
if (!_tinystm.initialized)
return;
tls_exit();
stm_quiesce_exit();
#ifdef EPOCH_GC
gc_exit();
#endif /* EPOCH_GC */
_tinystm.initialized = 0;
}
/*
* Called once (from main) to clean up STM infrastructure.
*/
_CALLCONV void
stm_exit(void)
{
PRINT_DEBUG("==> stm_exit()\n");
if (!_tinystm.initialized)
return;
tls_exit();
stm_quiesce_exit();
# ifdef STM_F2C2
char filename[512];
int cpu_id=0, fd;
for (cpu_id=0; cpu_id<sysconf(_SC_NPROCESSORS_CONF); cpu_id++) {
sprintf(filename, "/sys/devices/system/cpu/cpu%i/cpufreq/scaling_setspeed",cpu_id);
//printf("Filename: %s", filename);
fd=open(filename, O_WRONLY);
if(fd==-1){
printf("\nError opening file %s", filename);
exit(1);
}
char target_freq[]="800000";
write(fd, &target_freq, sizeof(target_freq));
close(fd);
}
if (semctl(semid, 0, IPC_RMID) < 0) {
printf("\nCould not delete semaphore");
}
#endif /* STM_F2C2 */
#ifdef EPOCH_GC
gc_exit();
#endif /* EPOCH_GC */
_tinystm.initialized = 0;
}
