[babeltrace.git] / formats / bt-dummy / bt-dummy.c

/*
 * BabelTrace - Dummy Output
 *
 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
 *
 * Author: 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 <babeltrace/ctf-text/types.h>
#include <babeltrace/format.h>
#include <babeltrace/babeltrace-internal.h>
#include <inttypes.h>
#include <sys/mman.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <glib.h>
#include <unistd.h>
#include <stdlib.h>

void bt_dummy_hook(void)
{
	/*
	 * Dummy function to prevent the linker from discarding this format as
	 * "unused" in static builds.
	 */
}

static
int bt_dummy_write_event(struct bt_stream_pos *ppos, struct ctf_stream_definition *stream)
{
	return 0;
}

static
struct bt_trace_descriptor *bt_dummy_open_trace(const char *path, int flags,
		void (*packet_seek)(struct bt_stream_pos *pos, size_t index,
			int whence), FILE *metadata_fp)
{
	struct ctf_text_stream_pos *pos;

	pos = g_new0(struct ctf_text_stream_pos, 1);
	pos->parent.rw_table = NULL;
	pos->parent.event_cb = bt_dummy_write_event;
	pos->parent.trace = &pos->trace_descriptor;
	return &pos->trace_descriptor;
}

static
int bt_dummy_close_trace(struct bt_trace_descriptor *td)
{
	struct ctf_text_stream_pos *pos =
		container_of(td, struct ctf_text_stream_pos,
			trace_descriptor);
	free(pos);
	return 0;
}

static
struct bt_format bt_dummy_format = {
	.open_trace = bt_dummy_open_trace,
	.close_trace = bt_dummy_close_trace,
};

static
void __attribute__((constructor)) bt_dummy_init(void)
{
	int ret;

	bt_dummy_format.name = g_quark_from_string("dummy");
	ret = bt_register_format(&bt_dummy_format);
	assert(!ret);
}

static
void __attribute__((destructor)) bt_dummy_exit(void)
{
	bt_unregister_format(&bt_dummy_format);
}
Commit	Line	Data
	1	/*
	2	* BabelTrace - Dummy Output
	3	*
	4	* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
	5	*
	6	* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	7	*
	8	* Permission is hereby granted, free of charge, to any person obtaining a copy
	9	* of this software and associated documentation files (the "Software"), to deal
	10	* in the Software without restriction, including without limitation the rights
	11	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	12	* copies of the Software, and to permit persons to whom the Software is
	13	* furnished to do so, subject to the following conditions:
	14	*
	15	* The above copyright notice and this permission notice shall be included in
	16	* all copies or substantial portions of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	21	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	22	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	23	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	24	* SOFTWARE.
	25	*/
	26
	27	#include <babeltrace/ctf-text/types.h>
	28	#include <babeltrace/format.h>
	29	#include <babeltrace/babeltrace-internal.h>
	30	#include <inttypes.h>
	31	#include <sys/mman.h>
	32	#include <errno.h>
	33	#include <sys/types.h>
	34	#include <sys/stat.h>
	35	#include <fcntl.h>
	36	#include <dirent.h>
	37	#include <glib.h>
	38	#include <unistd.h>
	39	#include <stdlib.h>
	40
	41	void bt_dummy_hook(void)
	42	{
	43	/*
	44	* Dummy function to prevent the linker from discarding this format as
	45	* "unused" in static builds.
	46	*/
	47	}
	48
	49	static
	50	int bt_dummy_write_event(struct bt_stream_pos ppos, struct ctf_stream_definition stream)
	51	{
	52	return 0;
	53	}
	54
	55	static
	56	struct bt_trace_descriptor bt_dummy_open_trace(const char path, int flags,
	57	void (packet_seek)(struct bt_stream_pos pos, size_t index,
	58	int whence), FILE *metadata_fp)
	59	{
	60	struct ctf_text_stream_pos *pos;
	61
	62	pos = g_new0(struct ctf_text_stream_pos, 1);
	63	pos->parent.rw_table = NULL;
	64	pos->parent.event_cb = bt_dummy_write_event;
	65	pos->parent.trace = &pos->trace_descriptor;
	66	return &pos->trace_descriptor;
	67	}
	68
	69	static
	70	int bt_dummy_close_trace(struct bt_trace_descriptor *td)
	71	{
	72	struct ctf_text_stream_pos *pos =
	73	container_of(td, struct ctf_text_stream_pos,
	74	trace_descriptor);
	75	free(pos);
	76	return 0;
	77	}
	78
	79	static
	80	struct bt_format bt_dummy_format = {
	81	.open_trace = bt_dummy_open_trace,
	82	.close_trace = bt_dummy_close_trace,
	83	};
	84
	85	static
	86	void __attribute__((constructor)) bt_dummy_init(void)
	87	{
	88	int ret;
	89
	90	bt_dummy_format.name = g_quark_from_string("dummy");
	91	ret = bt_register_format(&bt_dummy_format);
	92	assert(!ret);
	93	}
	94
	95	static
	96	void __attribute__((destructor)) bt_dummy_exit(void)
	97	{
	98	bt_unregister_format(&bt_dummy_format);
	99	}