[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 "ltt-sessiond.h"
#include "session.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;
	struct lttng_kernel_event *event;
	struct cds_list_head list;
};

/* Kernel channel */
struct ltt_kernel_channel {
	int fd;
	char *pathname;
	unsigned int stream_count;
	struct lttng_kernel_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_kernel_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;
	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;
};

int get_trace_count_per_session(struct ltt_session *session);
void get_traces_per_session(struct ltt_session *session, struct lttng_trace *traces);
int ust_create_trace(struct command_ctx *cmd_ctx);
int ust_start_trace(struct command_ctx *cmd_ctx);
int ust_stop_trace(struct command_ctx *cmd_ctx);

#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
5461b305	22	#include "ltt-sessiond.h"
d4a2a84a	23	#include "session.h"
20fe2104	24	#include "lttng-kernel.h"
d4a2a84a	25
20fe2104 DG	26	/* Kernel event list */
	27	struct ltt_kernel_event_list {
	28	struct cds_list_head head;
	29	};
	30
8c0faa1d DG	31	/* Channel stream list */
	32	struct ltt_kernel_stream_list {
	33	struct cds_list_head head;
	34	};
	35
	36	/* Channel list */
	37	struct ltt_kernel_channel_list {
	38	struct cds_list_head head;
	39	};
	40
20fe2104 DG	41	/* Kernel event */
20fe2104 DG	42	struct ltt_kernel_event {
20fe2104	43	int fd;
f34daff7	44	struct lttng_kernel_event *event;
20fe2104 DG	45	struct cds_list_head list;
	46	};
	47
	48	/* Kernel channel */
	49	struct ltt_kernel_channel {
	50	int fd;
8c0faa1d DG	51	char *pathname;
8c0faa1d DG	52	unsigned int stream_count;
9cb98350	53	struct lttng_kernel_channel *channel;
20fe2104	54	struct ltt_kernel_event_list events_list;
8c0faa1d DG	55	struct ltt_kernel_stream_list stream_list;
8c0faa1d DG	56	struct cds_list_head list;
20fe2104 DG	57	};
20fe2104 DG	58
aaf26714 DG	59	/* Metadata */
	60	struct ltt_kernel_metadata {
	61	int fd;
8c0faa1d	62	char *pathname;
aaf26714 DG	63	struct lttng_kernel_channel *conf;
	64	};
	65
8c0faa1d DG	66	/* Channel stream */
	67	struct ltt_kernel_stream {
	68	int fd;
	69	char *pathname;
	70	int state;
	71	struct cds_list_head list;
	72	};
	73
20fe2104 DG	74	/* Kernel session */
	75	struct ltt_kernel_session {
	76	int fd;
8c0faa1d DG	77	int metadata_stream_fd;
	78	unsigned int channel_count;
	79	unsigned int stream_count_global;
aaf26714	80	struct ltt_kernel_metadata *metadata;
8c0faa1d	81	struct ltt_kernel_channel_list channel_list;
fda89c9b DG	82	};
	83
	84	/* UST trace representation */
	85	struct ltt_ust_trace {
	86	struct cds_list_head list;
1657e9bb	87	char name[NAME_MAX];
fda89c9b DG	88	int shmid;
	89	pid_t pid;
	90	struct cds_list_head markers;
	91	};
	92
	93	struct ltt_ust_marker {
	94	struct cds_list_head list;
	95	char *name;
	96	char *channel;
	97	};
	98
1657e9bb DG	99	int get_trace_count_per_session(struct ltt_session *session);
1657e9bb DG	100	void get_traces_per_session(struct ltt_session session, struct lttng_trace traces);
5461b305 DG	101	int ust_create_trace(struct command_ctx *cmd_ctx);
	102	int ust_start_trace(struct command_ctx *cmd_ctx);
	103	int ust_stop_trace(struct command_ctx *cmd_ctx);
d4a2a84a	104
fda89c9b	105	#endif /* _LTT_TRACE_H */