[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-kernel.h"

/* Default kernel channel attributes */
#define DEFAULT_KERNEL_OVERWRITE            0
#define DEFAULT_KERNEL_SUBBUF_SIZE          4096    /* bytes */
#define DEFAULT_KERNEL_SUBBUF_NUM           8       /* Must always be a power of 2 */
#define DEFAULT_KERNEL_SWITCH_TIMER         0       /* usec */
#define DEFAULT_KERNEL_READ_TIMER           200     /* usec */

/* 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;
};

/*
 * Function prototype
 */

/* Kernel session */
struct ltt_kernel_session *trace_create_kernel_session(void);

/* Kernel channel */
struct ltt_kernel_channel *trace_create_kernel_channel(void);

/* Kernel event */
struct ltt_kernel_event *trace_create_kernel_event(char *name,
		enum lttng_kernel_instrumentation type);

/* Kernel metadata */
struct ltt_kernel_metadata *trace_create_kernel_metadata(void);

/* Kernel stream */
struct ltt_kernel_stream *trace_create_kernel_stream(void);

#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>
20fe2104	24	#include "lttng-kernel.h"
d4a2a84a	25
54012638 DG	26	/* Default kernel channel attributes */
	27	#define DEFAULT_KERNEL_OVERWRITE 0
	28	#define DEFAULT_KERNEL_SUBBUF_SIZE 4096 /* bytes */
	29	#define DEFAULT_KERNEL_SUBBUF_NUM 8 /* Must always be a power of 2 */
	30	#define DEFAULT_KERNEL_SWITCH_TIMER 0 /* usec */
	31	#define DEFAULT_KERNEL_READ_TIMER 200 /* usec */
	32
20fe2104 DG	33	/* Kernel event list */
	34	struct ltt_kernel_event_list {
	35	struct cds_list_head head;
	36	};
	37
8c0faa1d DG	38	/* Channel stream list */
	39	struct ltt_kernel_stream_list {
	40	struct cds_list_head head;
	41	};
	42
	43	/* Channel list */
	44	struct ltt_kernel_channel_list {
	45	struct cds_list_head head;
	46	};
	47
20fe2104 DG	48	/* Kernel event */
20fe2104 DG	49	struct ltt_kernel_event {
20fe2104	50	int fd;
f34daff7	51	struct lttng_kernel_event *event;
20fe2104 DG	52	struct cds_list_head list;
	53	};
	54
	55	/* Kernel channel */
	56	struct ltt_kernel_channel {
	57	int fd;
8c0faa1d DG	58	char *pathname;
8c0faa1d DG	59	unsigned int stream_count;
9cb98350	60	struct lttng_kernel_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;
aaf26714 DG	70	struct lttng_kernel_channel *conf;
	71	};
	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 DG	84	int metadata_stream_fd;
	85	unsigned int channel_count;
	86	unsigned int stream_count_global;
aaf26714	87	struct ltt_kernel_metadata *metadata;
8c0faa1d	88	struct ltt_kernel_channel_list channel_list;
fda89c9b DG	89	};
	90
	91	/* UST trace representation */
	92	struct ltt_ust_trace {
	93	struct cds_list_head list;
1657e9bb	94	char name[NAME_MAX];
fda89c9b DG	95	int shmid;
	96	pid_t pid;
	97	struct cds_list_head markers;
	98	};
	99
	100	struct ltt_ust_marker {
	101	struct cds_list_head list;
	102	char *name;
	103	char *channel;
	104	};
	105
54012638 DG	106	/*
	107	* Function prototype
	108	*/
	109
	110	/* Kernel session */
	111	struct ltt_kernel_session *trace_create_kernel_session(void);
	112
	113	/* Kernel channel */
	114	struct ltt_kernel_channel *trace_create_kernel_channel(void);
	115
	116	/* Kernel event */
	117	struct ltt_kernel_event trace_create_kernel_event(char name,
	118	enum lttng_kernel_instrumentation type);
	119
	120	/* Kernel metadata */
	121	struct ltt_kernel_metadata *trace_create_kernel_metadata(void);
	122
	123	/* Kernel stream */
	124	struct ltt_kernel_stream *trace_create_kernel_stream(void);
	125
fda89c9b	126	#endif /* _LTT_TRACE_H */