[ltt-dev] [UST PATCH] Add a TRACEPOINT test program
David Goulet
david.goulet at polymtl.ca
Fri Oct 1 15:19:57 EDT 2010
This test is aimed at testing different tracepoint case and
be used to ensure no bugs are added.
Complete description of the test in tracepoint_test.c
Signed-off-by: David Goulet <david.goulet at polymtl.ca>
---
configure.ac | 1 +
tests/Makefile.am | 2 +-
tests/runtests | 2 +
tests/tracepoint/Makefile.am | 9 +++
tests/tracepoint/run | 17 ++++++
tests/tracepoint/tracepoint_test.c | 107 ++++++++++++++++++++++++++++++++++++
tests/tracepoint/tracepoint_test.h | 8 +++
7 files changed, 145 insertions(+), 1 deletions(-)
create mode 100644 tests/tracepoint/Makefile.am
create mode 100755 tests/tracepoint/run
create mode 100644 tests/tracepoint/tracepoint_test.c
create mode 100644 tests/tracepoint/tracepoint_test.h
diff --git a/configure.ac b/configure.ac
index 10a02e0..42982c5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -122,6 +122,7 @@ AC_CONFIG_FILES([
tests/dlopen/Makefile
tests/same_line_marker/Makefile
tests/trace_event/Makefile
+ tests/tracepoint/Makefile
tests/register_test/Makefile
libustinstr-malloc/Makefile
libustfork/Makefile
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1d31c3f..69801c0 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,3 +1,3 @@
-SUBDIRS = hello hello2 basic basic_long fork simple_include snprintf test-nevents test-libustinstr-malloc dlopen same_line_marker trace_event register_test
+SUBDIRS = hello hello2 basic basic_long fork simple_include snprintf test-nevents test-libustinstr-malloc dlopen same_line_marker trace_event register_test tracepoint
dist_noinst_SCRIPTS = test_loop runtests trace_matches
diff --git a/tests/runtests b/tests/runtests
index 602fc1e..ff00253 100755
--- a/tests/runtests
+++ b/tests/runtests
@@ -43,6 +43,8 @@ simple_harness_run dlopen/dlopen.sh
simple_harness_run same_line_marker/same_line_marker.sh
+simple_harness_run tracepoint/run
+
echo "************************************"
if [[ $tests_failed -eq 0 ]]; then
echo "$0: All passed"
diff --git a/tests/tracepoint/Makefile.am b/tests/tracepoint/Makefile.am
new file mode 100644
index 0000000..37c8f20
--- /dev/null
+++ b/tests/tracepoint/Makefile.am
@@ -0,0 +1,9 @@
+AM_CPPFLAGS = -I$(top_srcdir)/include
+
+noinst_PROGRAMS = tracepoint_test
+tracepoint_test_SOURCES = tracepoint_test.c tracepoint_test.h
+tracepoint_test_LDADD = $(top_builddir)/libust/libust.la $(top_builddir)/libust-initializer.o
+
+CFLAGS_tracepoint_test.o = -I$(src)
+noinst_SCRIPTS = run
+EXTRA_DIST = run
diff --git a/tests/tracepoint/run b/tests/tracepoint/run
new file mode 100755
index 0000000..0da9864
--- /dev/null
+++ b/tests/tracepoint/run
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+TESTDIR=$(dirname $0)/..
+
+source $TESTDIR/test_functions.sh
+source $TESTDIR/tap.sh
+
+starttest "Testing Tracepoints"
+plan_tests 6
+
+okx usttrace $TESTDIR/tracepoint/tracepoint_test
+trace_loc=$(usttrace -W)
+trace_matches -N "probe1" -n "5" "probe = 13" $trace_loc
+trace_matches -N "probe2" -n "5" "probe = 42" $trace_loc
+trace_matches -N "probe3" -n "1" "probe = \"probe3\"" $trace_loc
+trace_matches -N "probe4" -n "100" "probe4 = 42" $trace_loc
+check_trace_logs "$trace_loc"
diff --git a/tests/tracepoint/tracepoint_test.c b/tests/tracepoint/tracepoint_test.c
new file mode 100644
index 0000000..cd3939c
--- /dev/null
+++ b/tests/tracepoint/tracepoint_test.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 2010 David Goulet <david.goulet at polymtl.ca>
+ *
+ * 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 test is aimed at testing tracepoint *with* trace_mark :
+ *
+ * 1) tracepoint named : "ust_event"
+ * -) Probe 1 registered and recording the value 13 (x5)
+ * -) Probe 2 registered and recording the value 42 (x5)
+ * -) Probe 3 registered and recording the payload of the struct message
+ * but using a *different* tracepoint (event_msg)
+ *
+ * 2) tracepoint named : "ust_event2"
+ * -) Probe 4 registered and recording the value 42 (x100)
+ */
+
+#include <stdio.h>
+#include <ust/marker.h>
+#include "tracepoint_test.h"
+
+DEFINE_TRACE(ust_event);
+DEFINE_TRACE(ust_event2);
+
+static struct message msg_probe3 = {
+ .payload = "probe3",
+};
+
+/*
+ * Probe 4 --> ust_event2
+ * Will record 100 times the value 42
+ */
+void tp_probe4(void *data, unsigned int p4)
+{
+ int i;
+ for (i = 0; i < 100; i++) {
+ trace_mark_tp(ust, event2, ust_event2, tp_probe4, "probe4 %u", p4);
+ }
+}
+
+/*
+ * Probe 3 --> ust_event *and* event_msg (from inside)
+ * Will record the payload of msg_prob3 struct
+ * from the data pointer of the probe
+ */
+void tp_probe3(void *data, unsigned int p3)
+{
+ struct message *msg;
+ msg = (struct message*) data;
+ trace_mark_tp(ust, event_msg, ust_event_msg,
+ tp_probe3, "probe %s", msg->payload);
+}
+
+/*
+ * Probe 2 --> ust_event
+ * Will record 5 times the number 13
+ */
+void tp_probe2(void *data, unsigned int p2)
+{
+ int i;
+ for (i = 0; i < 5; i++) {
+ trace_mark_tp(ust, event, ust_event, tp_probe2, "probe %u", 13);
+ }
+}
+
+/*
+ * Probe 1 --> ust_event
+ * Will record 5 times the unsigned int v = 42
+ */
+void tp_probe(void *data, unsigned int p1)
+{
+ int i;
+ for (i = 0; i < 5; i++) {
+ trace_mark_tp(ust, event, ust_event, tp_probe, "probe %u", p1);
+ }
+}
+
+static void __attribute__((constructor)) init()
+{
+ register_trace_ust_event(tp_probe, NULL);
+ register_trace_ust_event(tp_probe2, NULL);
+ register_trace_ust_event(tp_probe3, &msg_probe3);
+ register_trace_ust_event2(tp_probe4, NULL);
+}
+
+int main(int argc, char **argv) {
+ unsigned int v = 42;
+ /* Tracepoint 1 : ust_event */
+ trace_ust_event(v);
+ /* Tracepoint 2 : ust_event2 */
+ trace_ust_event2(v);
+
+ return 0;
+}
diff --git a/tests/tracepoint/tracepoint_test.h b/tests/tracepoint/tracepoint_test.h
new file mode 100644
index 0000000..6b4dcdb
--- /dev/null
+++ b/tests/tracepoint/tracepoint_test.h
@@ -0,0 +1,8 @@
+#include <ust/tracepoint.h>
+
+DECLARE_TRACE(ust_event, TP_PROTO(unsigned int v), TP_ARGS(v));
+DECLARE_TRACE(ust_event2, TP_PROTO(unsigned int v), TP_ARGS(v));
+
+struct message {
+ char *payload;
+};
--
1.7.3
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