Function IsMainThread

src/nvcv/util/Compat.cpp:99–104

static pthread_once_t g_keyOnce = PTHREAD_ONCE_INIT;

bool IsMainThread()
{
    // Works on Linux.
    // Ref: https://stackoverflow.com/questions/4867839/how-can-i-tell-if-pthread-self-is-the-main-first-thread-in-the-process
    return syscall(SYS_gettid) == getpid();
}

// Destructor list to be used for objects in main thread.
static std::vector<DestructorInfo> *g_ListMainThread = nullptr;