Author: sewardj
Date: 2007-10-30 19:31:43 +0000 (Tue, 30 Oct 2007)
New Revision: 7057
Log:
Add a test for pthread_once behaviour.
Added:
branches/THRCHECK/thrcheck/tests/tc21_pthonce.c
branches/THRCHECK/thrcheck/tests/tc21_pthonce.stderr.exp-glibc25-amd64
branches/THRCHECK/thrcheck/tests/tc21_pthonce.stdout.exp
branches/THRCHECK/thrcheck/tests/tc21_pthonce.vgtest
Modified:
branches/THRCHECK/thrcheck/tests/Makefile.am
Modified: branches/THRCHECK/thrcheck/tests/Makefile.am
===================================================================
--- branches/THRCHECK/thrcheck/tests/Makefile.am 2007-10-30 19:08:01 UTC
(rev 7056)
+++ branches/THRCHECK/thrcheck/tests/Makefile.am 2007-10-30 19:31:43 UTC
(rev 7057)
@@ -69,9 +69,10 @@
tc19_shadowmem.stderr.exp-glibc25-amd64 \
tc19_shadowmem.stderr.exp-glibc25-x86 \
tc20_verifywrap.vgtest tc20_verifywrap.stdout.exp \
- tc20_verifywrap.stderr.exp-glibc25-amd64
+ tc20_verifywrap.stderr.exp-glibc25-amd64 \
+ tc21_pthonce.vgtest tc21_pthonce.stdout.exp \
+ tc21_pthonce.stderr.exp-glibc25-amd64
-
check_PROGRAMS = \
hg01_all_ok \
hg02_deadlock \
@@ -98,7 +99,8 @@
tc17_sembar \
tc18_semabuse \
tc19_shadowmem \
- tc20_verifywrap
+ tc20_verifywrap \
+ tc21_pthonce
AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/include \
-I$(top_srcdir)/coregrind -I$(top_builddir)/include \
Added: branches/THRCHECK/thrcheck/tests/tc21_pthonce.c
===================================================================
--- branches/THRCHECK/thrcheck/tests/tc21_pthonce.c
(rev 0)
+++ branches/THRCHECK/thrcheck/tests/tc21_pthonce.c 2007-10-30 19:31:43 UTC
(rev 7057)
@@ -0,0 +1,80 @@
+
+/* This really exists to check that Thrcheck behaves plausibly
+ with pthread_once calls. Which it appears to.
+
+ The original source of this program is as shown below, although it
+ has been modified somewhat. See
+ http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html
+ for OReilly's policy on using bits of their code examples.
+*/
+
+
+/********************************************************
+ * An example source module to accompany...
+ *
+ * "Using POSIX Threads: Programming with Pthreads"
+ * by Brad Nichols, Dick Buttlar, Jackie Farrell
+ * O'Reilly & Associates, Inc.
+ *
+ ********************************************************
+ * once_exam.c
+ *
+ * An example of using the pthreads_once() call to execute an
+ * initialization procedure.
+ *
+ * A program spawns multiple threads and each one tries to
+ * execute the routine welcome() using the once call. Only
+ * the first thread into the once routine will actually
+ * execute welcome().
+ *
+ * The program's main thread synchronizes its exit with the
+ * exit of the threads using the pthread_join() operation.
+ *
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <assert.h>
+
+#include <pthread.h>
+
+#define NUM_THREADS 4
+
+static pthread_once_t welcome_once_block = PTHREAD_ONCE_INIT;
+
+static int unprotected1 = 0;
+static int unprotected2 = 0;
+
+void welcome(void) {
+ printf("welcome: Welcome\n");
+ unprotected1++; /* this is harmless */
+}
+
+void* child ( void* argV ) {
+ int r= pthread_once(&welcome_once_block, welcome); assert(!r);
+ printf("child: Hi, I'm thread %d\n", *(int*)argV);
+ unprotected2++; /* whereas this is a race */
+ return NULL;
+}
+
+int main ( void ) {
+ int *id_arg, i, r;
+ pthread_t threads[NUM_THREADS];
+
+ id_arg = (int *)malloc(NUM_THREADS*sizeof(int));
+
+ for (i = 0; i < NUM_THREADS; i++) {
+ id_arg[i] = i;
+ r= pthread_create(&threads[i], NULL, child, &id_arg[i]);
+ assert(!r);
+ }
+
+ for (i = 0; i < NUM_THREADS; i++) {
+ pthread_join(threads[i], NULL);
+ //printf("main: joined to thread %d\n", i);
+ }
+ printf("main: Goodbye\n");
+ return 0;
+}
Added: branches/THRCHECK/thrcheck/tests/tc21_pthonce.stderr.exp-glibc25-amd64
===================================================================
--- branches/THRCHECK/thrcheck/tests/tc21_pthonce.stderr.exp-glibc25-amd64
(rev 0)
+++ branches/THRCHECK/thrcheck/tests/tc21_pthonce.stderr.exp-glibc25-amd64
2007-10-30 19:31:43 UTC (rev 7057)
@@ -0,0 +1,26 @@
+
+Thread #2 was created
+ at 0x........: clone (in /...libc...)
+ by 0x........: ...
+ by 0x........: [EMAIL PROTECTED] (in /lib/libpthread...)
+ by 0x........: [EMAIL PROTECTED] (tc_intercepts.c:...)
+ by 0x........: main (tc21_pthonce.c:70)
+
+Thread #3 was created
+ at 0x........: clone (in /...libc...)
+ by 0x........: ...
+ by 0x........: [EMAIL PROTECTED] (in /lib/libpthread...)
+ by 0x........: [EMAIL PROTECTED] (tc_intercepts.c:...)
+ by 0x........: main (tc21_pthonce.c:70)
+
+Possible data race during write of size 4 at 0x........
+ at 0x........: child (tc21_pthonce.c:58)
+ by 0x........: mythread_wrapper (tc_intercepts.c:...)
+ by 0x........: ...
+ by 0x........: ...
+ Old state: shared-readonly by threads #2, #3
+ New state: shared-modified by threads #2, #3
+ Reason: this thread, #3, holds no consistent locks
+ Location 0x........ has never been protected by any lock
+
+ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
Added: branches/THRCHECK/thrcheck/tests/tc21_pthonce.stdout.exp
===================================================================
--- branches/THRCHECK/thrcheck/tests/tc21_pthonce.stdout.exp
(rev 0)
+++ branches/THRCHECK/thrcheck/tests/tc21_pthonce.stdout.exp 2007-10-30
19:31:43 UTC (rev 7057)
@@ -0,0 +1,6 @@
+welcome: Welcome
+child: Hi, I'm thread 0
+child: Hi, I'm thread 1
+child: Hi, I'm thread 2
+child: Hi, I'm thread 3
+main: Goodbye
Added: branches/THRCHECK/thrcheck/tests/tc21_pthonce.vgtest
===================================================================
--- branches/THRCHECK/thrcheck/tests/tc21_pthonce.vgtest
(rev 0)
+++ branches/THRCHECK/thrcheck/tests/tc21_pthonce.vgtest 2007-10-30
19:31:43 UTC (rev 7057)
@@ -0,0 +1 @@
+prog: tc21_pthonce
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
Valgrind-developers mailing list
Valgrind-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/valgrind-developers
