Tests: Add "fork" ust regression test

[lttng-tools.git] / tests / regression / ust / fork / fork.c

diff --git a/tests/regression/ust/fork/fork.c b/tests/regression/ust/fork/fork.c
new file mode 100644 (file)
index 0000000..744e920
--- /dev/null
+++ b/tests/regression/ust/fork/fork.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2009  Pierre-Marc Fournier
+ * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * 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; version 2.1 of
+ * the License.
+ *
+ * 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
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+#define TRACEPOINT_DEFINE
+#define TRACEPOINT_CREATE_PROBES
+#include "ust_tests_fork.h"
+
+int main(int argc, char **argv, char *env[])
+{
+       int result;
+
+       if (argc < 2) {
+               fprintf(stderr, "usage: fork PROG_TO_EXEC\n");
+               exit(1);
+       }
+
+       printf("parent_pid %d\n", getpid());
+       tracepoint(ust_tests_fork, before_fork, getpid());
+
+       result = fork();
+       if (result == -1) {
+               perror("fork");
+               return 1;
+       }
+       if (result == 0) {
+               char *args[] = { "fork2", NULL };
+
+               tracepoint(ust_tests_fork, after_fork_child, getpid());
+
+               result = execve(argv[1], args, env);
+               if (result == -1) {
+                       perror("execve");
+                       return 1;
+               }
+       } else {
+               printf("child_pid %d\n", result);
+               tracepoint(ust_tests_fork, after_fork_parent, getpid());
+       }
+
+       return 0;
+}