Function WallClockMs

src/daemon/resource_monitor.cpp:17–20

namespace {

int64_t WallClockMs() {
    using namespace std::chrono;
    return duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count();
}

// Reads utime+stime from /proc/<pid>/stat. Returns 0 if the pid is gone.
// /proc/<pid>/stat format: pid (comm) state ppid ... utime(14) stime(15) ...