PERFORCE change 67720 for review

[David Xu]

http://perforce.freebsd.org/chv.cgi?CH=67720

Change 67720 by davidxu at davidxu_tiger on 2004/12/26 12:16:02

	[EAGAIN]
	The mutex could not be acquired because the maximum number of recursive
	locks for mutex has been exceeded.

Affected files ...

.. //depot/projects/davidxu_thread/src/lib/libthread/thread/thr_mutex.c#6 edit

Differences ...

==== //depot/projects/davidxu_thread/src/lib/libthread/thread/thr_mutex.c#6 (text+ko) ====

@@ -936,8 +936,11 @@
 
 	case PTHREAD_MUTEX_RECURSIVE:
 		/* Increment the lock count: */
-		m->m_count++;
-		ret = 0;
+		if (m->m_count + 1 > 0) {
+			m->m_count++;
+			ret = 0;
+		} else
+			ret = EAGAIN;
 		break;
 
 	default:
@@ -982,7 +985,11 @@
 
 	case PTHREAD_MUTEX_RECURSIVE:
 		/* Increment the lock count: */
-		m->m_count++;
+		if (m->m_count + 1 > 0) {
+			m->m_count++;
+			ret = 0;
+		} else
+			ret = EAGAIN;
 		break;
 
 	default: