WEAK void sampling_profiler_thread(void *) {
halide_profiler_state *s = halide_profiler_get_state();
// grab the lock
halide_mutex_lock(&s->lock);
while (s->current_func != halide_profiler_please_stop) {
uint64_t t1 = halide_current_time_ns(NULL);
uint64_t t = t1;
while (1) {
uint64_t t_now = halide_current_time_ns(NULL);
int func = s->current_func;
if (func == halide_profiler_please_stop) {
break;
} else if (func >= 0) {
// Assume all time since I was last awake is due to
// the currently running func.
bill_func(s, func, t_now - t);
}
t = t_now;
// Release the lock, sleep, reacquire.
int sleep_ms = s->sleep_time;
halide_mutex_unlock(&s->lock);
halide_sleep_ms(NULL, sleep_ms);
halide_mutex_lock(&s->lock);
}
}
s->started = false;
halide_mutex_unlock(&s->lock);
}
WEAK void sampling_profiler_thread(void *) {
halide_profiler_state *s = halide_profiler_get_state();
// grab the lock
halide_mutex_lock(&s->lock);
while (s->current_func != halide_profiler_please_stop) {
uint64_t t1 = halide_current_time_ns(NULL);
uint64_t t = t1;
while (1) {
int func, active_threads;
if (s->get_remote_profiler_state) {
// Execution has disappeared into remote code running
// on an accelerator (e.g. Hexagon DSP)
s->get_remote_profiler_state(&func, &active_threads);
} else {
func = s->current_func;
active_threads = s->active_threads;
}
uint64_t t_now = halide_current_time_ns(NULL);
if (func == halide_profiler_please_stop) {
break;
} else if (func >= 0) {
// Assume all time since I was last awake is due to
// the currently running func.
bill_func(s, func, t_now - t, active_threads);
}
t = t_now;
// Release the lock, sleep, reacquire.
int sleep_ms = s->sleep_time;
halide_mutex_unlock(&s->lock);
halide_sleep_ms(NULL, sleep_ms);
halide_mutex_lock(&s->lock);
}
}
s->started = false;
halide_mutex_unlock(&s->lock);
}
