Method add

src/wallClock.cpp:73–77

    }

    void add(u64 trace) {
        ThreadCpuTime& t = _ringbuf[atomicInc(_write_ptr) & (RINGBUF_SIZE - 1)];
        t.trace = trace;
        storeRelease(t.cpu_time, OS::threadCpuTime(0));
    }

    void drain(ThreadSleepMap& thread_sleep_state) {
        u64 read_limit = _read_ptr + RINGBUF_SIZE;