Method timerLoop

src/profiler.cpp:1482–1510

}

void Profiler::timerLoop(void* timer_id) {
    u64 current_micros = OS::micros();
    u64 loop_limit = std::min(_stop_time, _loop_time);
    u64 sleep_until = _jfr.active() ? current_micros + 1000000 : loop_limit;

    while (true) {
        {
            // Release _timer_lock after sleep to avoid deadlock with Profiler::stop
            MutexLocker ml(_timer_lock);
            while (_timer_id == timer_id && !_timer_lock.waitUntil(sleep_until)) {
                // timeout not reached
            }
            if (_timer_id != timer_id) return;
        }

        if ((current_micros = OS::micros()) >= loop_limit) {
            expire(_global_args, current_micros < _stop_time);
            return;
        }

        bool need_switch_chunk = _jfr.timerTick(current_micros, _gc_id);
        if (need_switch_chunk) {
            // Flush under profiler state lock
            flushJfr();
        }

        sleep_until = current_micros + 1000000;
    }
}

void Profiler::logEmptyOutput(Arguments& args, u64 printed_samples_count, Writer& out) {
    if (!out.good()) {