Tests: Add "libc-wrapper" ust regression test
authorJérémie Galarneau <jeremie.galarneau@efficios.com>
Tue, 26 Mar 2013 00:28:35 +0000 (20:28 -0400)
committerDavid Goulet <dgoulet@efficios.com>
Wed, 27 Mar 2013 14:34:00 +0000 (10:34 -0400)
Based on the "test-libustinstr-malloc" test formerly part of lttng-ust.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>
.gitignore
configure.ac
tests/fast_regression
tests/long_regression
tests/regression/ust/Makefile.am
tests/regression/ust/libc-wrapper/Makefile.am [new file with mode: 0644]
tests/regression/ust/libc-wrapper/README [new file with mode: 0644]
tests/regression/ust/libc-wrapper/prog.c [new file with mode: 0644]
tests/regression/ust/libc-wrapper/test_libc-wrapper [new file with mode: 0755]
tests/regression/ust/libc-wrapper/test_libc-wrapper.py [new file with mode: 0644]

index 533973aa17fd37dc51fc94f1a12411de994fd4e4..8e2e63d1cd1a99f70578f16842b85a3774b191f0 100644 (file)
@@ -71,5 +71,6 @@ tests/regression/ust/daemon/daemon
 tests/regression/ust/exit-fast/exit-fast
 tests/regression/ust/fork/fork
 tests/regression/ust/fork/fork2
+tests/regression/ust/libc-wrapper/prog
 
 benchmark/
index d7ca253712962a5a40a844b347a90597d69609e7..e2c2a4ffd20e6b75401d991891a77149a3cde05a 100644 (file)
@@ -336,6 +336,7 @@ AC_CONFIG_FILES([
        tests/regression/ust/daemon/Makefile
        tests/regression/ust/exit-fast/Makefile
        tests/regression/ust/fork/Makefile
+       tests/regression/ust/libc-wrapper/Makefile
        tests/unit/Makefile
        tests/utils/Makefile
        tests/utils/tap/Makefile
index cc561fb553b9a1440c6c0517b480c8e5873834f6..175bb036da959b44cbb6944ed939ed92837806a3 100644 (file)
@@ -16,3 +16,4 @@ regression/ust/linking/test_linking
 regression/ust/daemon/test_daemon
 regression/ust/exit-fast/test_exit-fast
 regression/ust/fork/test_fork
+regression/ust/libc-wrapper/test_libc-wrapper
index 810b661db499e24122cd9012cbf17c334218ba63..8b1cbfc24ee9efcf2003d5c375e2a5481a7da3cf 100644 (file)
@@ -18,3 +18,4 @@ regression/ust/linking/test_linking
 regression/ust/daemon/test_daemon
 regression/ust/exit-fast/test_exit-fast
 regression/ust/fork/test_fork
+regression/ust/libc-wrapper/test_libc-wrapper
index 23613bdeb28a6c56eae1d705ce59ab5e9aba07e0..e6225440b898adea02d6b7e34cb6dad162cbbea0 100644 (file)
@@ -1,6 +1,6 @@
 if HAVE_LIBLTTNG_UST_CTL
 SUBDIRS = nprocesses high-throughput low-throughput before-after multi-session \
-               overlap buffers-uid linking daemon exit-fast fork
+               overlap buffers-uid linking daemon exit-fast fork libc-wrapper
 
 EXTRA_DIST = test_event_basic test_event_wildcard
 
diff --git a/tests/regression/ust/libc-wrapper/Makefile.am b/tests/regression/ust/libc-wrapper/Makefile.am
new file mode 100644 (file)
index 0000000..af12d31
--- /dev/null
@@ -0,0 +1,8 @@
+AM_CPPFLAGS = -I$(srcdir)
+
+noinst_PROGRAMS = prog
+prog_SOURCES = prog.c
+prog_LDADD = -llttng-ust -llttng-ust-libc-wrapper
+
+noinst_SCRIPTS = test_libc-wrapper test_libc-wrapper.py
+EXTRA_DIST = test_libc-wrapper test_libc-wrapper.py
diff --git a/tests/regression/ust/libc-wrapper/README b/tests/regression/ust/libc-wrapper/README
new file mode 100644 (file)
index 0000000..adcd425
--- /dev/null
@@ -0,0 +1,22 @@
+libc-wrapper malloc/free tracing test
+-------------------------------------
+
+This test checks if tracing works correctly when applications are linked against
+the UST libc wrapper which provides tracepoints in the malloc and free libc
+functions.
+
+DESCRIPTION
+-----------
+
+The test application performs a series of calls to malloc()/free() and the
+resulting trace is checked for the presence of ust-libc:malloc and ust-libc:free
+events.
+
+DEPENDENCIES
+------------
+
+To run this test, you will need:
+
+  - lttng-tools (with python bindings)
+  - babeltrace
+  - python 3.0 or better
diff --git a/tests/regression/ust/libc-wrapper/prog.c b/tests/regression/ust/libc-wrapper/prog.c
new file mode 100644 (file)
index 0000000..3068257
--- /dev/null
@@ -0,0 +1,48 @@
+/* Copyright (C) 2009  Pierre-Marc Fournier
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* This program is used to test malloc instrumentation with libustinstr-malloc.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#define N_ITER 1000
+
+int main()
+{
+       int i;
+       const char teststr[] = "Hello World! 1234567890abc";
+       void *ptrs[N_ITER];
+
+       for (i = 0; i < N_ITER; i++) {
+               ptrs[i] = malloc(i+1000);
+
+               memcpy(ptrs[i], teststr, sizeof(teststr));
+
+               if (i % 2 == 0) {
+                       free(ptrs[i]);
+               }
+       }
+
+       for (i = 0; i < N_ITER; i++) {
+               if (i % 2 == 1)
+                       free(ptrs[i]);
+       }
+
+       return 0;
+}
diff --git a/tests/regression/ust/libc-wrapper/test_libc-wrapper b/tests/regression/ust/libc-wrapper/test_libc-wrapper
new file mode 100755 (executable)
index 0000000..8c6b128
--- /dev/null
@@ -0,0 +1,35 @@
+#!/bin/sh
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Check for a running sessiond
+`pidof lt-lttng-sessiond`
+STOP_SESSIOND=$?
+
+CURDIR=$(dirname $0)
+TESTDIR=${CURDIR}/../../..
+
+# Try to launch a sessiond before invoking the python test script
+if [ $STOP_SESSIOND -ne 0 ]; then
+       DIR=$(readlink -f ${TESTDIR})
+       ${DIR}/../src/bin/lttng-sessiond/lttng-sessiond --daemonize --quiet --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
+fi
+
+python3 ${CURDIR}/test_libc-wrapper.py
+
+if [ $STOP_SESSIOND -ne 0 ]; then
+    kill `pidof lt-lttng-sessiond`
+fi
diff --git a/tests/regression/ust/libc-wrapper/test_libc-wrapper.py b/tests/regression/ust/libc-wrapper/test_libc-wrapper.py
new file mode 100644 (file)
index 0000000..d45b71a
--- /dev/null
@@ -0,0 +1,92 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) - 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License, version 2 only, as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os
+import subprocess
+import re
+import shutil
+import sys
+
+test_path = os.path.dirname(os.path.abspath(__file__)) + "/"
+test_utils_path = test_path
+for i in range(4):
+    test_utils_path = os.path.dirname(test_utils_path)
+test_utils_path = test_utils_path + "/utils"
+sys.path.append(test_utils_path)
+from test_utils import *
+
+
+NR_TESTS = 4
+current_test = 1
+print("1..{0}".format(NR_TESTS))
+
+# Check if a sessiond is running... bail out if none found.
+if session_daemon_alive() == 0:
+    bail("No sessiond running. Please make sure you are running this test with the \"run\" shell script and verify that the lttng tools are properly installed.")
+
+session_info = create_session()
+enable_ust_tracepoint_event(session_info, "ust_libc*")
+start_session(session_info)
+
+malloc_process = subprocess.Popen(test_path + "prog", stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+if sys.version_info >= (3, 3):
+    try:
+        malloc_process.wait(5)
+    except TimeoutExpired:
+        malloc_process.kill()
+        bail("Failed to run libustinstr-malloc test application.", session_info)
+else:
+    malloc_process.wait()
+
+print_test_result(malloc_process.returncode == 0, current_test, "Test application exited normally")
+current_test += 1
+
+stop_session(session_info)
+
+# Check for malloc events in the resulting trace
+try:
+    babeltrace_process = subprocess.Popen(["babeltrace", session_info.trace_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+except FileNotFoundError:
+    bail("Could not open babeltrace. Please make sure it is installed.", session_info)
+
+malloc_event_found = False
+free_event_found = False
+
+for event_line in babeltrace_process.stdout:
+    # Let babeltrace finish to get the return code
+    if malloc_event_found and free_event_found:
+        continue
+
+    event_line = event_line.decode('utf-8').replace("\n", "")
+    if re.search(r".*ust_libc:malloc.*", event_line) is not None:
+        malloc_event_found = True
+
+    if re.search(r".*ust_libc:free.*", event_line) is not None:
+        free_event_found = True
+
+babeltrace_process.wait()
+
+print_test_result(babeltrace_process.returncode == 0, current_test, "Resulting trace is readable")
+current_test += 1
+
+print_test_result(free_event_found, current_test, "ust_libc:malloc event found in resulting trace")
+current_test += 1
+
+print_test_result(free_event_found, current_test, "ust_libc:free event found in resulting trace")
+current_test += 1
+
+shutil.rmtree(session_info.tmp_directory)
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