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

/*
 * Copyright (C) 2009     Steven Rostedt <srostedt@redhat.com>
 * Copyright (C) 2010     Nils Carlson <nils.carlson@ericsson.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
 *
 */

/*
 * This whole file is currently a dummy, mapping a TRACE_EVENT
 * to a printf
 */

/*
 * Stage 1. Create a struct and a printf calling function
 * that is connected to the tracepoint at load time.
 */
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, args, tstruct, assign, print)		\
	DECLARE_TRACE_EVENT_CLASS(name,					\
				  PARAMS(proto),			\
				  PARAMS(args),				\
				  PARAMS(tstruct),			\
				  PARAMS(assign),			\
				  PARAMS(print));			\
	DEFINE_TRACE_EVENT(name, name, PARAMS(proto), PARAMS(args));

#undef __field
#define __field(type, item)		type	item;

#undef TP_STRUCT__entry
#define TP_STRUCT__entry(args...) args

#undef TP_printf
#define TP_printf(fmt, args...) fmt "\n", args

#undef TP_fast_assign
#define TP_fast_assign(args...) args

#undef DEFINE_TRACE_EVENT
#define DEFINE_TRACE_EVENT(template, name, proto, args)


#undef DECLARE_TRACE_EVENT_CLASS
#define DECLARE_TRACE_EVENT_CLASS(name, proto, args, tstruct, assign, print)	\
	struct trace_raw_##name {					\
		tstruct							\
	};								\
	static void trace_printf_##name(proto)				\
	{								\
		struct trace_raw_##name entry_struct, *__entry;		\
		__entry = &entry_struct;				\
		{ assign };					\
									\
		printf(print);						\
	}								\
	static void __attribute__((constructor)) init_##name()		\
	{								\
		printf("connecting tracepoint " #name "\n");		\
		register_trace_##name(trace_printf_##name);		\
	}


#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2009 Steven Rostedt <srostedt@redhat.com>
	3	* Copyright (C) 2010 Nils Carlson <nils.carlson@ericsson.com>
	4	*
	5	* This library is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU Lesser General Public
	7	* License as published by the Free Software Foundation; either
	8	* version 2.1 of the License, or (at your option) any later version.
	9	*
	10	* This library is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* Lesser General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU Lesser General Public
	16	* License along with this library; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	18	*
	19	*/
	20
	21	/*
	22	* This whole file is currently a dummy, mapping a TRACE_EVENT
	23	* to a printf
	24	*/
	25
	26	/*
	27	* Stage 1. Create a struct and a printf calling function
	28	* that is connected to the tracepoint at load time.
	29	*/
	30	#undef TRACE_EVENT
	31	#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
	32	DECLARE_TRACE_EVENT_CLASS(name, \
	33	PARAMS(proto), \
	34	PARAMS(args), \
	35	PARAMS(tstruct), \
	36	PARAMS(assign), \
	37	PARAMS(print)); \
	38	DEFINE_TRACE_EVENT(name, name, PARAMS(proto), PARAMS(args));
	39
	40	#undef __field
	41	#define __field(type, item) type item;
	42
	43	#undef TP_STRUCT__entry
	44	#define TP_STRUCT__entry(args...) args
	45
	46	#undef TP_printf
	47	#define TP_printf(fmt, args...) fmt "\n", args
	48
	49	#undef TP_fast_assign
	50	#define TP_fast_assign(args...) args
	51
	52	#undef DEFINE_TRACE_EVENT
	53	#define DEFINE_TRACE_EVENT(template, name, proto, args)
	54
	55
	56	#undef DECLARE_TRACE_EVENT_CLASS
	57	#define DECLARE_TRACE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
	58	struct trace_raw_##name { \
	59	tstruct \
	60	}; \
	61	static void trace_printf_##name(proto) \
	62	{ \
	63	struct trace_raw_##name entry_struct, *__entry; \
	64	__entry = &entry_struct; \
	65	{ assign }; \
	66	\
	67	printf(print); \
	68	} \
	69	static void __attribute__((constructor)) init_##name() \
	70	{ \
	71	printf("connecting tracepoint " #name "\n"); \
	72	register_trace_##name(trace_printf_##name); \
	73	}
	74
	75
	76	#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)