Implement userspace-probe regression tests

[lttng-tools.git] / tests / utils / testapp / userspace-probe-sdt-binary / userspace-probe-sdt-binary.c

diff --git a/tests/utils/testapp/userspace-probe-sdt-binary/userspace-probe-sdt-binary.c b/tests/utils/testapp/userspace-probe-sdt-binary/userspace-probe-sdt-binary.c
new file mode 100644 (file)
index 0000000..c707139
--- /dev/null
+++ b/tests/utils/testapp/userspace-probe-sdt-binary/userspace-probe-sdt-binary.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2017  Francis Deslauriers <francis.deslauriers@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; 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
+ */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <sys/sdt.h>
+
+#include "foobar_provider.h"
+#include "libfoo.h"
+#include "sema.h"
+
+int main(int argc, char *argv[])
+{
+       void *handle;
+       void (*bar_function)();
+
+       FOOBAR_TP1();
+       FOOBAR_TP2();
+       /*
+        * This SDT tracepoint has an argument. Argument extraction is not support
+        * at the moment but tracing of the tracepoint should work.
+        */
+       FOOBAR_TP_WITH_ARG(42);
+
+       /* Call function containing an SDT tracepoint in shared object */
+       foo_function();
+
+       /*
+        * Load a show shared object and call a function containing an SDT
+        * tracepoint
+        */
+       handle = dlopen("libbar.so", RTLD_LAZY);
+       if (!handle) {
+               fprintf(stderr, "Can't dlopen libbar.so");
+               return -1;
+       }
+       bar_function = (void (*)())dlsym(handle, "bar_function");
+       bar_function();
+       dlclose(handle);
+
+       /* This tracepoint has 2 callsites in this binary */
+       FOOBAR_TP2();
+
+       /*
+        * This function is defined in libfoo AND in libzzz. For a test, libzzz is
+        * LD_PRELOADed and should override this function
+        */
+       overridable_function();
+
+       /*
+        * This function is calling a SDT tracepoint that is guarded by a
+        * semaphore.
+        */
+       sema_function();
+       return 0;
+}
+