Implement clock plugin support

[lttng-modules.git] / lttng-clock.h

diff --git a/lttng-clock.h b/lttng-clock.h
new file mode 100644 (file)
index 0000000..5da4f0c
--- /dev/null
+++ b/lttng-clock.h
@@ -0,0 +1,41 @@
+#ifndef _LTTNG_CLOCK_H
+#define _LTTNG_CLOCK_H
+
+/*
+ * lttng-clock.h
+ *
+ * Copyright (C) 2014 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; only
+ * 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 <linux/module.h>
+
+#define LTTNG_MODULES_UUID_STR_LEN     37
+
+struct lttng_trace_clock {
+       u64 (*read64)(void);
+       u64 (*freq)(void);
+       int (*uuid)(char *uuid);
+       const char *(*name)(void);
+       const char *(*description)(void);
+};
+
+int lttng_clock_register_plugin(struct lttng_trace_clock *ltc,
+               struct module *mod);
+void lttng_clock_unregister_plugin(struct lttng_trace_clock *ltc,
+               struct module *mod);
+
+#endif /* _LTTNG_TRACE_CLOCK_H */