common: compile libcommon as C++

[lttng-tools.git] / tests / regression / tools / notification / default_pipe_size_getter.cpp

diff --git a/tests/regression/tools/notification/default_pipe_size_getter.cpp b/tests/regression/tools/notification/default_pipe_size_getter.cpp
new file mode 100644 (file)
index 0000000..cc24cec
--- /dev/null
+++ b/tests/regression/tools/notification/default_pipe_size_getter.cpp
@@ -0,0 +1,53 @@
+/*
+ * default_pipe_size_getter.c
+ *
+ * Tests suite for LTTng notification API (get default size of pipes)
+ *
+ * Copyright (C) 2021 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <common/pipe.h>
+#include <common/error.h>
+
+int lttng_opt_verbose;
+int lttng_opt_mi;
+int lttng_opt_quiet;
+
+int main(int argc, const char **argv)
+{
+       int ret;
+       /*
+        * The event notifier pipes are not "special"; they are created using
+        * the lttng_pipe utility. Hence, this should be representative of a
+        * pipe created by the session daemon for event notifier messages to
+        * go through.
+        */
+       struct lttng_pipe *pipe = lttng_pipe_open(0);
+
+       if (!pipe) {
+               /* lttng_pipe_open already logs on error. */
+               ret = EXIT_FAILURE;
+               goto end;
+       }
+
+       ret = fcntl(lttng_pipe_get_writefd(pipe), F_GETPIPE_SZ);
+       if (ret < 0) {
+               PERROR("Failed to get the size of the pipe");
+               ret = EXIT_FAILURE;
+               goto end;
+       }
+
+       printf("%d\n", ret);
+       ret = EXIT_SUCCESS;
+end:
+       lttng_pipe_destroy(pipe);
+       return ret;
+}