__xdata struct ao_task *__data ao_cur_task;
void
-ao_add_task(__xdata struct ao_task * task, void (*start)(void), __code char *name)
+ao_add_task(__xdata struct ao_task * task, void (*start)(void), __code char *name) __reentrant
{
uint8_t __xdata *stack;
if (ao_num_tasks == AO_NUM_TASKS)
/* Find a task to run. If there isn't any runnable task,
* this loop will run forever, which is just fine
*/
- for (;;) {
- ++ao_cur_task_index;
- if (ao_cur_task_index == ao_num_tasks)
- ao_cur_task_index = 0;
- ao_cur_task = ao_tasks[ao_cur_task_index];
- if (ao_cur_task->wchan == NULL)
- break;
+ {
+ __pdata uint8_t ao_next_task_index = ao_cur_task_index;
+ for (;;) {
+ ++ao_next_task_index;
+ if (ao_next_task_index == ao_num_tasks)
+ ao_next_task_index = 0;
+
+ ao_cur_task = ao_tasks[ao_next_task_index];
+ if (ao_cur_task->wchan == NULL) {
+ ao_cur_task_index = ao_next_task_index;
+ break;
+ }
+
+ /* Enter lower power mode when there isn't anything to do */
+ if (ao_next_task_index == ao_cur_task_index)
+ PCON = PCON_IDLE;
+ }
}
{
_endasm;
}
-int
+void
ao_sleep(__xdata void *wchan)
{
__critical {
- ao_cur_task->wchan = wchan;
+ ao_cur_task->wchan = wchan;
}
ao_yield();
}
-int
+void
ao_wakeup(__xdata void *wchan)
{
uint8_t i;
{
uint8_t i;
uint8_t pc_loc;
+ __xdata struct ao_task *task;
for (i = 0; i < ao_num_tasks; i++) {
- pc_loc = ao_tasks[i]->stack_count - 17;
- printf("%-8s: wchan %04x pc %04x\n",
- ao_tasks[i]->name,
- (int16_t) ao_tasks[i]->wchan,
- (ao_tasks[i]->stack[pc_loc]) | (ao_tasks[i]->stack[pc_loc+1] << 8));
+ task = ao_tasks[i];
+ pc_loc = task->stack_count - 17;
+ printf("%12s: wchan %04x pc %04x\n",
+ task->name,
+ (int16_t) task->wchan,
+ (task->stack[pc_loc]) | (task->stack[pc_loc+1] << 8));
}
}