Function PthreadToThreadID

snapshot/mac/process_reader_mac_test.cc:154–159

Returns a thread ID given a pthread_t. This wraps pthread_threadid_np() but that function has a cumbersome interface because it returns a success value. This function CHECKs success and returns the thread ID directly.

// that function has a cumbersome interface because it returns a success value.
// This function CHECKs success and returns the thread ID directly.
uint64_t PthreadToThreadID(pthread_t pthread) {
  uint64_t thread_id;
  errno = pthread_threadid_np(pthread, &thread_id);
  PCHECK(errno == 0) << "pthread_threadid_np";
  return thread_id;
}

TEST(ProcessReaderMac, SelfOneThread) {
  const ScopedSetThreadName scoped_set_thread_name(