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

/*
 * 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>
#include <helper.h>

#define TRACEPOINT_CREATE_PROBES
#define TRACEPOINT_DEFINE
#include "lttng-ust-tracelog-provider.h"

#define TRACELOG_CB(level) \
	static inline __attribute__((always_inline)) \
	void __lttng_ust_vtracelog_##level(const char *file, \
			int line, const char *func, \
			const char *fmt, va_list ap) \
	{ \
		char *msg; \
		const int 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, \
			LTTNG_UST_CALLER_IP()); \
		free(msg); \
	end: \
		return; \
	} \
	\
	void _lttng_ust_vtracelog_##level(const char *file, \
			int line, const char *func, \
			const char *fmt, va_list ap) \
	{ \
		__lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
	} \
	\
	void _lttng_ust_tracelog_##level(const char *file, \
			int line, const char *func, \
			const char *fmt, ...) \
	{ \
		va_list ap; \
		\
		va_start(ap, fmt); \
		__lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
		va_end(ap); \
	}

TRACELOG_CB(TRACE_EMERG)
TRACELOG_CB(TRACE_ALERT)
TRACELOG_CB(TRACE_CRIT)
TRACELOG_CB(TRACE_ERR)
TRACELOG_CB(TRACE_WARNING)
TRACELOG_CB(TRACE_NOTICE)
TRACELOG_CB(TRACE_INFO)
TRACELOG_CB(TRACE_DEBUG_SYSTEM)
TRACELOG_CB(TRACE_DEBUG_PROGRAM)
TRACELOG_CB(TRACE_DEBUG_PROCESS)
TRACELOG_CB(TRACE_DEBUG_MODULE)
TRACELOG_CB(TRACE_DEBUG_UNIT)
TRACELOG_CB(TRACE_DEBUG_FUNCTION)
TRACELOG_CB(TRACE_DEBUG_LINE)
TRACELOG_CB(TRACE_DEBUG)
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2013-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to deal
	6	* in the Software without restriction, including without limitation the rights
	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	8	* copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	20	* SOFTWARE.
	21	*/
	22
	23	#define _GNU_SOURCE
	24	#define _LGPL_SOURCE
	25	#include <stdio.h>
	26	#include <helper.h>
	27
	28	#define TRACEPOINT_CREATE_PROBES
	29	#define TRACEPOINT_DEFINE
	30	#include "lttng-ust-tracelog-provider.h"
	31
	32	#define TRACELOG_CB(level) \
	33	static inline __attribute__((always_inline)) \
	34	void __lttng_ust_vtracelog_##level(const char *file, \
	35	int line, const char *func, \
	36	const char *fmt, va_list ap) \
	37	{ \
	38	char *msg; \
	39	const int len = vasprintf(&msg, fmt, ap); \
	40	\
	41	/* len does not include the final \0 */ \
	42	if (len < 0) \
	43	goto end; \
	44	__tracepoint_cb_lttng_ust_tracelog___##level(file, \
	45	line, func, msg, len, \
	46	LTTNG_UST_CALLER_IP()); \
	47	free(msg); \
	48	end: \
	49	return; \
	50	} \
	51	\
	52	void _lttng_ust_vtracelog_##level(const char *file, \
	53	int line, const char *func, \
	54	const char *fmt, va_list ap) \
	55	{ \
	56	__lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
	57	} \
	58	\
	59	void _lttng_ust_tracelog_##level(const char *file, \
	60	int line, const char *func, \
	61	const char *fmt, ...) \
	62	{ \
	63	va_list ap; \
	64	\
	65	va_start(ap, fmt); \
	66	__lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
	67	va_end(ap); \
	68	}
	69
	70	TRACELOG_CB(TRACE_EMERG)
	71	TRACELOG_CB(TRACE_ALERT)
	72	TRACELOG_CB(TRACE_CRIT)
	73	TRACELOG_CB(TRACE_ERR)
	74	TRACELOG_CB(TRACE_WARNING)
	75	TRACELOG_CB(TRACE_NOTICE)
	76	TRACELOG_CB(TRACE_INFO)
	77	TRACELOG_CB(TRACE_DEBUG_SYSTEM)
	78	TRACELOG_CB(TRACE_DEBUG_PROGRAM)
	79	TRACELOG_CB(TRACE_DEBUG_PROCESS)
	80	TRACELOG_CB(TRACE_DEBUG_MODULE)
	81	TRACELOG_CB(TRACE_DEBUG_UNIT)
	82	TRACELOG_CB(TRACE_DEBUG_FUNCTION)
	83	TRACELOG_CB(TRACE_DEBUG_LINE)
	84	TRACELOG_CB(TRACE_DEBUG)