Implement tracelog API

[lttng-ust.git] / liblttng-ust / tracelog.c

diff --git a/liblttng-ust/tracelog.c b/liblttng-ust/tracelog.c
new file mode 100644 (file)
index 0000000..0e42b4b
--- /dev/null
+++ b/liblttng-ust/tracelog.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2013-2014  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.
+ */
+
+#define _GNU_SOURCE
+#define _LGPL_SOURCE
+#include <stdio.h>
+
+#define TRACEPOINT_CREATE_PROBES
+#define TRACEPOINT_DEFINE
+#include "lttng-ust-tracelog-provider.h"
+
+#define TRACELOG_CB(level) \
+       void _lttng_ust_tracelog_##level(const char *file, \
+                       int line, const char *func, \
+                       const char *fmt, ...) \
+       { \
+               va_list ap; \
+               char *msg; \
+               int len; \
+               \
+               va_start(ap, fmt); \
+               len = vasprintf(&msg, fmt, ap); \
+               /* len does not include the final \0 */ \
+               if (len < 0) \
+                       goto end; \
+               __tracepoint_cb_lttng_ust_tracelog___##level(file, \
+                       line, func, msg, len, \
+                       __builtin_return_address(0)); \
+               free(msg); \
+       end: \
+               va_end(ap); \
+       }
+
+TRACELOG_CB(emerg)
+TRACELOG_CB(alert)
+TRACELOG_CB(crit)
+TRACELOG_CB(err)
+TRACELOG_CB(warning)
+TRACELOG_CB(notice)
+TRACELOG_CB(info)
+TRACELOG_CB(debug_system)
+TRACELOG_CB(debug_program)
+TRACELOG_CB(debug_process)
+TRACELOG_CB(debug_module)
+TRACELOG_CB(debug_unit)
+TRACELOG_CB(debug_function)
+TRACELOG_CB(debug_line)
+TRACELOG_CB(debug)