[babeltrace.git] / formats / lttng-live / lttng-live.h

#ifndef _LTTNG_LIVE_H
#define _LTTNG_LIVE_H

/*
 * Copyright 2013 Julien Desfossez <julien.desfossez@efficios.com>
 *                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 <stdint.h>
#include <sys/param.h>
#include <babeltrace/list.h>
#include "lttng-viewer-abi.h"

#define LTTNG_DEFAULT_NETWORK_VIEWER_PORT	5344

#define LTTNG_LIVE_MAJOR			2
#define LTTNG_LIVE_MINOR			4

/*
 * The lttng-live output file pointer is currently hardcoded to stdout,
 * and is expected to be hardcoded to this by fflush() performed between
 * each packet.
 */
#define LTTNG_LIVE_OUTPUT_FP			stdout

struct lttng_live_ctx {
	char traced_hostname[MAXNAMLEN];
	char session_name[MAXNAMLEN];
	char relay_hostname[MAXNAMLEN];
	int control_sock;
	int port;
	/* Protocol version to use for this connection. */
	uint32_t major;
	uint32_t minor;
	struct lttng_live_session *session;
	struct bt_context *bt_ctx;
	GArray *session_ids;
};

struct lttng_live_viewer_stream {
	uint64_t id;
	uint64_t mmap_size;
	uint64_t ctf_stream_id;
	FILE *metadata_fp_write;
	ssize_t metadata_len;
	int metadata_flag;
	int data_pending;
	struct lttng_live_session *session;
	struct lttng_live_ctf_trace *ctf_trace;
	struct lttng_viewer_index current_index;
	struct bt_list_head session_stream_node;	/* Owns stream. */
	struct bt_list_head trace_stream_node;
	int in_trace;
	char path[PATH_MAX];
};

struct lttng_live_session {
	uint64_t live_timer_interval;
	uint64_t stream_count;
	struct lttng_live_ctx *ctx;
	/* The session stream list owns the lttng_live_viewer_stream object. */
	struct bt_list_head stream_list;
	GHashTable *ctf_traces;
};

struct lttng_live_ctf_trace {
	uint64_t ctf_trace_id;
	struct lttng_live_viewer_stream *metadata_stream;
	/* The trace has a list of streams, but it has no ownership on them. */
	struct bt_list_head stream_list;
	FILE *metadata_fp;
	struct bt_trace_handle *handle;
	/* Set to -1 when not initialized. */
	int trace_id;
	int in_use;
};

/* Just used in listing. */
struct lttng_live_relay_session {
	uint32_t streams;
	uint32_t clients;
	uint32_t timer;
	char *name;
	char *hostname;
};

int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path);
int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
int lttng_live_read(struct lttng_live_ctx *ctx);
int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
int lttng_live_should_quit(void);

#endif /* _LTTNG_LIVE_H */
Commit	Line	Data
c98627ca MD	1	#ifndef _LTTNG_LIVE_H
c98627ca MD	2	#define _LTTNG_LIVE_H
4a744367 JD	3
	4	/*
	5	* Copyright 2013 Julien Desfossez <julien.desfossez@efficios.com>
	6	* 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 <stdint.h>
d1368cd1	28	#include <sys/param.h>
b5e7994d	29	#include <babeltrace/list.h>
fb6b45aa	30	#include "lttng-viewer-abi.h"
4a744367	31
4a744367 JD	32	#define LTTNG_DEFAULT_NETWORK_VIEWER_PORT 5344
	33
	34	#define LTTNG_LIVE_MAJOR 2
	35	#define LTTNG_LIVE_MINOR 4
	36
857eaa68 MD	37	/*
	38	* The lttng-live output file pointer is currently hardcoded to stdout,
	39	* and is expected to be hardcoded to this by fflush() performed between
	40	* each packet.
	41	*/
	42	#define LTTNG_LIVE_OUTPUT_FP stdout
	43
4a744367	44	struct lttng_live_ctx {
0206bb4a MJ	45	char traced_hostname[MAXNAMLEN];
	46	char session_name[MAXNAMLEN];
	47	char relay_hostname[MAXNAMLEN];
4a744367	48	int control_sock;
b5a1fa45	49	int port;
9aa155c5 JD	50	/* Protocol version to use for this connection. */
	51	uint32_t major;
	52	uint32_t minor;
4a744367	53	struct lttng_live_session *session;
2acdc547	54	struct bt_context *bt_ctx;
b5a1fa45	55	GArray *session_ids;
4a744367 JD	56	};
	57
	58	struct lttng_live_viewer_stream {
	59	uint64_t id;
	60	uint64_t mmap_size;
fb6b45aa	61	uint64_t ctf_stream_id;
af701dc4 JD	62	FILE *metadata_fp_write;
af701dc4 JD	63	ssize_t metadata_len;
4a744367	64	int metadata_flag;
fb6b45aa	65	int data_pending;
4a744367 JD	66	struct lttng_live_session *session;
4a744367 JD	67	struct lttng_live_ctf_trace *ctf_trace;
fb6b45aa	68	struct lttng_viewer_index current_index;
e88db11d MD	69	struct bt_list_head session_stream_node; /* Owns stream. */
	70	struct bt_list_head trace_stream_node;
	71	int in_trace;
4a744367 JD	72	char path[PATH_MAX];
	73	};
	74
	75	struct lttng_live_session {
	76	uint64_t live_timer_interval;
	77	uint64_t stream_count;
	78	struct lttng_live_ctx *ctx;
e88db11d	79	/* The session stream list owns the lttng_live_viewer_stream object. */
b5e7994d	80	struct bt_list_head stream_list;
4a744367 JD	81	GHashTable *ctf_traces;
	82	};
	83
	84	struct lttng_live_ctf_trace {
	85	uint64_t ctf_trace_id;
	86	struct lttng_live_viewer_stream *metadata_stream;
e88db11d MD	87	/* The trace has a list of streams, but it has no ownership on them. */
e88db11d MD	88	struct bt_list_head stream_list;
4a744367	89	FILE *metadata_fp;
150595c4	90	struct bt_trace_handle *handle;
c8a68319	91	/* Set to -1 when not initialized. */
4a744367	92	int trace_id;
2acdc547	93	int in_use;
4a744367 JD	94	};
4a744367 JD	95
b5a1fa45 JD	96	/* Just used in listing. */
	97	struct lttng_live_relay_session {
	98	uint32_t streams;
	99	uint32_t clients;
	100	uint32_t timer;
	101	char *name;
	102	char *hostname;
	103	};
	104
	105	int lttng_live_connect_viewer(struct lttng_live_ctx *ctx);
4a744367 JD	106	int lttng_live_establish_connection(struct lttng_live_ctx *ctx);
	107	int lttng_live_list_sessions(struct lttng_live_ctx ctx, const char path);
	108	int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id);
28756729	109	int lttng_live_read(struct lttng_live_ctx *ctx);
2acdc547	110	int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id);
8ace20bf	111	int lttng_live_should_quit(void);
4a744367	112
c98627ca	113	#endif /* _LTTNG_LIVE_H */