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From: Zhouyi ZHOU <zhouzhouyi@FreeBSD.org>
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Subject: PERFORCE change 126327 for review
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http://perforce.freebsd.org/chv.cgi?CH=126327

Change 126327 by zhouzhouyi@zhouzhouyi_mactest on 2007/09/12 06:51:32

	Modify the semaphore implementation of concurreny of tcp_server and tcp_client

Affected files ...

.. //depot/projects/soc2007/zhouzhouyi_mactest_soc/regression/mactest/tcpconnect.c#2 edit

Differences ...

==== //depot/projects/soc2007/zhouzhouyi_mactest_soc/regression/mactest/tcpconnect.c#2 (text+ko) ====

@@ -152,6 +152,14 @@
 			printf("pcap_open_live(): %s\n",errbuf); exit(1); 
 		}
 		/*Release the semaphore to let server go*/
+		for (;;) {
+			int i;
+			i = semctl(semid, 0, GETNCNT);
+			if (i == -1)
+				err(1, "semctl GETNCNT");
+			if (i == 1)
+				break;
+		}
 		s.sem_num = 0;
 		s.sem_op = 1;
 		s.sem_flg = SEM_UNDO;
@@ -183,6 +191,14 @@
 		err(1, "sever: semop -1");
 
 /*Release the semaphore to let client go */
+	for (;;) {
+		int i;
+		i = semctl(semid1, 0, GETNCNT);
+		if (i == -1)
+			err(1, "semctl GETNCNT");
+		if (i == 1)
+			break;
+	}
 	s1.sem_num = 0;
 	s1.sem_op = 1;
 	s1.sem_flg = SEM_UNDO;