Method wrapperExecutionLockUnlock

src/threadsync.cpp:272–295

NOTE: Don't do any fancy stuff in this wrapper which can cause the process to go into DEADLOCK

// NOTE: Don't do any fancy stuff in this wrapper which can cause the process
// to go into DEADLOCK
void
ThreadSync::wrapperExecutionLockUnlock()
{
  int saved_errno = errno;

  // The process is still initializing. We don't need to acquire lock.
  if (WorkerState::currentState() == WorkerState::UNKNOWN) {
    return;
  }

  Thread *thread = dmtcp_get_current_thread();

  JASSERT(thread->wrapperLockCount != 0);
  thread->wrapperLockCount -= 1;

  if (thread->wrapperLockCount == 0 &&
      DmtcpRWLockUnlock(&_wrapperExecutionLock) != 0) {
    fprintf(stderr, "ERROR %s:%d %s: Failed to release lock.\n",
            __FILE__, __LINE__, __PRETTY_FUNCTION__);
    _exit(DMTCP_FAIL_RC);
  }

  errno = saved_errno;
}

// GNU g++ uses __thread.  But the C++0x standard says to use thread_local.
// If your compiler fails here, you can: change "__thread" to "thread_local";