Implement tracelog API

[lttng-ust.git] / include / lttng / tracelog.h

diff --git a/include/lttng/tracelog.h b/include/lttng/tracelog.h
new file mode 100644 (file)
index 0000000..50ef4ff
--- /dev/null
+++ b/include/lttng/tracelog.h
@@ -0,0 +1,66 @@
+#ifndef _LTTNG_UST_TRACELOG_H
+#define _LTTNG_UST_TRACELOG_H
+
+/*
+ * Copyright (C) 2013-2015  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <lttng/lttng-ust-tracelog.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TP_TRACELOG_CB_TEMPLATE(level) \
+       extern void _lttng_ust_tracelog_##level(const char *file, \
+               int line, const char *func, const char *fmt, ...)
+
+TP_TRACELOG_CB_TEMPLATE(emerg);
+TP_TRACELOG_CB_TEMPLATE(alert);
+TP_TRACELOG_CB_TEMPLATE(crit);
+TP_TRACELOG_CB_TEMPLATE(err);
+TP_TRACELOG_CB_TEMPLATE(warning);
+TP_TRACELOG_CB_TEMPLATE(notice);
+TP_TRACELOG_CB_TEMPLATE(info);
+TP_TRACELOG_CB_TEMPLATE(debug_system);
+TP_TRACELOG_CB_TEMPLATE(debug_program);
+TP_TRACELOG_CB_TEMPLATE(debug_process);
+TP_TRACELOG_CB_TEMPLATE(debug_module);
+TP_TRACELOG_CB_TEMPLATE(debug_unit);
+TP_TRACELOG_CB_TEMPLATE(debug_function);
+TP_TRACELOG_CB_TEMPLATE(debug_line);
+TP_TRACELOG_CB_TEMPLATE(debug);
+
+#undef TP_TRACELOG_CB_TEMPLATE
+
+#define tracelog(level, fmt, ...)                                      \
+       do {                                                            \
+               STAP_PROBEV(tracepoint_lttng_ust_tracelog, level, ## __VA_ARGS__); \
+               if (caa_unlikely(__tracepoint_lttng_ust_tracelog___## level.state)) \
+                       _lttng_ust_tracelog_##level(__FILE__, __LINE__, __func__, \
+                               fmt, ## __VA_ARGS__); \
+       } while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LTTNG_UST_TRACELOG_H */