Thread: Win32 equivalent of pthread_equal

Doing an upgrade to my custom file/folder asset handling functions and decided to resolve the problem I think O_CLOEXEC attempts to resolve with process/thread checks, process check was easy enough with but thread checking is proving a little more difficult, anyone know what function is the equivalent or am I just gonna have to accept "asset->thread != thread" as the best method on win32? For reference here's the unfinished function I'm using:

Code:

dint TestLassetAccess( LASSET *Lasset, ach const *action )
{
	dint err = EACCES, pid = getpid();
	SYNC *Sync = GetLassetSync(Lasset);
	FILE *out = Sync->out;
	thread_t thread;

	if ( Lasset->pid != pid )
	{
		ECHO_ERROR( out, err );
		fprintf( out, "File '%s' is assigned to process %d, process %d cannot %s it\n" );
		return err;
	}

#ifdef _WIN32
	thread = GetCurrentThread();
	if ( Lasset->thread != thread )
#else
	thread = pthread_self();
	if ( !pthread_equal( Lasset->thread, thread ) )
#endif
	{
		ECHO_ERROR( out, err );
		fprintf( out, "File '%s' is assigned to thread %d, thread %d cannot %s it\n" );
		return err;
	}

	return 0;
}