[lttng-tools.git] / ltt-sessiond / trace.h

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _LTT_TRACE_H
#define _LTT_TRACE_H

#include <limits.h>
#include <urcu/list.h>

#include <lttng/lttng.h>

#include "lttng-kernel.h"

/* Kernel event list */
struct ltt_kernel_event_list {
	struct cds_list_head head;
};

/* Channel stream list */
struct ltt_kernel_stream_list {
	struct cds_list_head head;
};

/* Channel list */
struct ltt_kernel_channel_list {
	struct cds_list_head head;
};

/* Kernel event */
struct ltt_kernel_event {
	int fd;
	int enabled;
	struct lttng_kernel_context *ctx;
	struct lttng_kernel_event *event;
	struct cds_list_head list;
};

/* Kernel channel */
struct ltt_kernel_channel {
	int fd;
	int enabled;
	char *pathname;
	unsigned int stream_count;
	struct lttng_kernel_context *ctx;
	struct lttng_channel *channel;
	struct ltt_kernel_event_list events_list;
	struct ltt_kernel_stream_list stream_list;
	struct cds_list_head list;
};

/* Metadata */
struct ltt_kernel_metadata {
	int fd;
	char *pathname;
	struct lttng_channel *conf;
};

/* Channel stream */
struct ltt_kernel_stream {
	int fd;
	char *pathname;
	int state;
	struct cds_list_head list;
};

/* Kernel session */
struct ltt_kernel_session {
	int fd;
	int metadata_stream_fd;
	int kconsumer_fds_sent;
	unsigned int channel_count;
	unsigned int stream_count_global;
	struct ltt_kernel_metadata *metadata;
	struct ltt_kernel_channel_list channel_list;
};

/* UST trace representation */
struct ltt_ust_trace {
	struct cds_list_head list;
	char name[NAME_MAX];
	int shmid;
	pid_t pid;
	struct cds_list_head markers;
};

struct ltt_ust_marker {
	struct cds_list_head list;
	char *name;
	char *channel;
};

/*
 * Get functions.
 */
struct ltt_kernel_event *get_kernel_event_by_name(
		char *name, struct ltt_kernel_channel *channel);
struct ltt_kernel_channel *get_kernel_channel_by_name(
		char *name, struct ltt_kernel_session *session);

/*
 * Create functions malloc() the data structure.
 */
struct ltt_kernel_session *trace_create_kernel_session(void);
struct ltt_kernel_channel *trace_create_kernel_channel(struct lttng_channel *chan);
struct ltt_kernel_event *trace_create_kernel_event(struct lttng_event *ev);
struct ltt_kernel_metadata *trace_create_kernel_metadata(void);
struct ltt_kernel_stream *trace_create_kernel_stream(void);

/*
 * Destroy functions free() the data structure and remove from linked list if
 * it's applies.
 */
void trace_destroy_kernel_session(struct ltt_kernel_session *session);
void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata);
void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel);
void trace_destroy_kernel_event(struct ltt_kernel_event *event);
void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream);

#endif /* _LTT_TRACE_H */
Commit	Line	Data
fda89c9b DG	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version 2
	7	* of the License, or (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
	19	#ifndef _LTT_TRACE_H
	20	#define _LTT_TRACE_H
	21
9e78d6ae DG	22	#include <limits.h>
9e78d6ae DG	23	#include <urcu/list.h>
d4a2a84a	24
f3ed775e DG	25	#include <lttng/lttng.h>
	26
	27	#include "lttng-kernel.h"
54012638	28
20fe2104 DG	29	/* Kernel event list */
	30	struct ltt_kernel_event_list {
	31	struct cds_list_head head;
	32	};
	33
8c0faa1d DG	34	/* Channel stream list */
	35	struct ltt_kernel_stream_list {
	36	struct cds_list_head head;
	37	};
	38
	39	/* Channel list */
	40	struct ltt_kernel_channel_list {
	41	struct cds_list_head head;
	42	};
	43
20fe2104 DG	44	/* Kernel event */
20fe2104 DG	45	struct ltt_kernel_event {
20fe2104	46	int fd;
e953ef25	47	int enabled;
d65106b1	48	struct lttng_kernel_context *ctx;
f34daff7	49	struct lttng_kernel_event *event;
20fe2104 DG	50	struct cds_list_head list;
	51	};
	52
	53	/* Kernel channel */
	54	struct ltt_kernel_channel {
	55	int fd;
d36b8583	56	int enabled;
8c0faa1d DG	57	char *pathname;
8c0faa1d DG	58	unsigned int stream_count;
d65106b1	59	struct lttng_kernel_context *ctx;
f3ed775e	60	struct lttng_channel *channel;
20fe2104	61	struct ltt_kernel_event_list events_list;
8c0faa1d DG	62	struct ltt_kernel_stream_list stream_list;
8c0faa1d DG	63	struct cds_list_head list;
20fe2104 DG	64	};
20fe2104 DG	65
aaf26714 DG	66	/* Metadata */
	67	struct ltt_kernel_metadata {
	68	int fd;
8c0faa1d	69	char *pathname;
f3ed775e	70	struct lttng_channel *conf;
aaf26714 DG	71	};
aaf26714 DG	72
8c0faa1d DG	73	/* Channel stream */
	74	struct ltt_kernel_stream {
	75	int fd;
	76	char *pathname;
	77	int state;
	78	struct cds_list_head list;
	79	};
	80
20fe2104 DG	81	/* Kernel session */
	82	struct ltt_kernel_session {
	83	int fd;
8c0faa1d	84	int metadata_stream_fd;
f3ed775e	85	int kconsumer_fds_sent;
8c0faa1d DG	86	unsigned int channel_count;
8c0faa1d DG	87	unsigned int stream_count_global;
aaf26714	88	struct ltt_kernel_metadata *metadata;
8c0faa1d	89	struct ltt_kernel_channel_list channel_list;
fda89c9b DG	90	};
	91
	92	/* UST trace representation */
	93	struct ltt_ust_trace {
	94	struct cds_list_head list;
1657e9bb	95	char name[NAME_MAX];
fda89c9b DG	96	int shmid;
	97	pid_t pid;
	98	struct cds_list_head markers;
	99	};
	100
	101	struct ltt_ust_marker {
	102	struct cds_list_head list;
	103	char *name;
	104	char *channel;
	105	};
	106
19e70852 DG	107	/*
	108	* Get functions.
	109	*/
	110	struct ltt_kernel_event *get_kernel_event_by_name(
	111	char name, struct ltt_kernel_channel channel);
	112	struct ltt_kernel_channel *get_kernel_channel_by_name(
	113	char name, struct ltt_kernel_session session);
	114
54012638	115	/*
c363b55d	116	* Create functions malloc() the data structure.
54012638	117	*/
54012638	118	struct ltt_kernel_session *trace_create_kernel_session(void);
f3ed775e DG	119	struct ltt_kernel_channel trace_create_kernel_channel(struct lttng_channel chan);
f3ed775e DG	120	struct ltt_kernel_event trace_create_kernel_event(struct lttng_event ev);
54012638	121	struct ltt_kernel_metadata *trace_create_kernel_metadata(void);
54012638 DG	122	struct ltt_kernel_stream *trace_create_kernel_stream(void);
54012638 DG	123
c363b55d DG	124	/*
	125	* Destroy functions free() the data structure and remove from linked list if
	126	* it's applies.
	127	*/
	128	void trace_destroy_kernel_session(struct ltt_kernel_session *session);
	129	void trace_destroy_kernel_metadata(struct ltt_kernel_metadata *metadata);
	130	void trace_destroy_kernel_channel(struct ltt_kernel_channel *channel);
	131	void trace_destroy_kernel_event(struct ltt_kernel_event *event);
	132	void trace_destroy_kernel_stream(struct ltt_kernel_stream *stream);
	133
fda89c9b	134	#endif /* _LTT_TRACE_H */