lsst::log::detail Namespace Reference

Functions
unsigned	lwpID ()

Function Documentation

lwpID()

unsigned lsst::log::detail::lwpID

(

)

Definition at line 40 of file lwpID.cc.

                 {
 
#if defined(__linux__)
 
    // On Linux have to do syscall
    auto lwp = syscall(SYS_gettid);
 
#elif defined(__APPLE__)
 
    // OSX has a special Pthreads function to find out PID
    auto lwp = pthread_mach_thread_np(pthread_self());
 
#else
 
    // On all other system just generate incremental number and call it LWP
    static std::atomic<unsigned> threadNum(0);
    thread_local static auto lwp = ++threadNum;
 
#endif
 
    return static_cast<unsigned>(lwp);
}