Bugzilla bug #39674: added a test selintr.c to verify that the select()

wrapper in classic NSPR properly blocks the SIGALRM clocks.
Added file: selintr.c
Modified files: Makefile, Makefile.in, runtests.ksh

nsprpub/pr/tests/Makefile

@@ -129,6 +129,7 @@ CSRCS =             \
 	selct_nm.c	    \
 	selct_to.c	    \
 	select2.c  		\
+	selintr.c  		\
 	sem.c 	  		\
 	sema.c 	  		\
 	semaerr.c 		\

nsprpub/pr/tests/Makefile.in

@@ -133,6 +133,7 @@ CSRCS =             \
 	selct_nm.c	    \
 	selct_to.c	    \
 	select2.c  		\
+	selintr.c  		\
 	sem.c 	  		\
 	sema.c			\
 	semaerr.c		\

nsprpub/pr/tests/runtests.ksh

@@ -151,6 +151,7 @@ sel_spd
 selct_er
 selct_nm
 selct_to
+selintr
 sema
 semaerr
 semaping

nsprpub/pr/tests/selintr.c

@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.1 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ * 
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ * 
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * Test whether classic NSPR's select() wrapper properly blocks
+ * the periodic SIGALRM clocks.  On some platforms (such as
+ * HP-UX and SINIX) an interrupted select() system call is
+ * restarted with the originally specified timeout, ignoring
+ * the time that has elapsed.  If a select() call is interrupted
+ * repeatedly, it will never time out.  (See Bugzilla bug #39674.)
+ */
+
+#if !defined(XP_UNIX)
+
+/*
+ * This test is applicable to Unix only.
+ */
+
+int main()
+{
+    return 0;
+}
+
+#else /* XP_UNIX */
+
+#include "nspr.h"
+
+#include <sys/time.h>
+#include <stdio.h>
+
+int main()
+{
+    struct timeval timeout;
+    int rv;
+
+    PR_SetError(0, 0);  /* force NSPR to initialize */
+    PR_EnableClockInterrupts();
+
+    /* 2 seconds timeout */
+    timeout.tv_sec = 2;
+    timeout.tv_usec = 0;
+    rv = select(1, NULL, NULL, NULL, &timeout);
+    printf("select returned %d\n", rv);
+    return 0;
+}
+
+#endif /* XP_UNIX */