[lttng-tools.git] / src / bin / lttng-sessiond / lttng-sessiond.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, version 2 only,
 * as published by the Free Software Foundation.
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef _LTT_SESSIOND_H
#define _LTT_SESSIOND_H

#define _LGPL_SOURCE
#include <urcu.h>
#include <urcu/wfqueue.h>

#include <common/sessiond-comm/sessiond-comm.h>
#include <common/compat/socket.h>

#include "session.h"
#include "ust-app.h"

const char *module_proc_lttng = "/proc/lttng";

extern const char default_home_dir[],
	default_tracing_group[],
	default_ust_sock_dir[],
	default_global_apps_pipe[];

/*
 * This contains extra data needed for processing a command received by the
 * session daemon from the lttng client.
 */
struct command_ctx {
	int ust_sock;
	unsigned int lttng_msg_size;
	struct ltt_session *session;
	struct lttcomm_lttng_msg *llm;
	struct lttcomm_session_msg *lsm;
	lttng_sock_cred creds;
};

struct ust_command {
	int sock;
	struct ust_register_msg reg_msg;
	struct cds_wfq_node node;
};

/*
 * Queue used to enqueue UST registration request (ust_commant) and protected
 * by a futex with a scheme N wakers / 1 waiters. See futex.c/.h
 */
struct ust_cmd_queue {
	int32_t futex;
	struct cds_wfq_queue queue;
};

#endif /* _LTT_SESSIOND_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License, version 2 only,
	6	* as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#ifndef _LTT_SESSIOND_H
	19	#define _LTT_SESSIOND_H
	20
	21	#define _LGPL_SOURCE
	22	#include <urcu.h>
	23	#include <urcu/wfqueue.h>
	24
	25	#include <common/sessiond-comm/sessiond-comm.h>
	26	#include <common/compat/socket.h>
	27
	28	#include "session.h"
	29	#include "ust-app.h"
	30
	31	const char *module_proc_lttng = "/proc/lttng";
	32
	33	extern const char default_home_dir[],
	34	default_tracing_group[],
	35	default_ust_sock_dir[],
	36	default_global_apps_pipe[];
	37
	38	/*
	39	* This contains extra data needed for processing a command received by the
	40	* session daemon from the lttng client.
	41	*/
	42	struct command_ctx {
	43	int ust_sock;
	44	unsigned int lttng_msg_size;
	45	struct ltt_session *session;
	46	struct lttcomm_lttng_msg *llm;
	47	struct lttcomm_session_msg *lsm;
	48	lttng_sock_cred creds;
	49	};
	50
	51	struct ust_command {
	52	int sock;
	53	struct ust_register_msg reg_msg;
	54	struct cds_wfq_node node;
	55	};
	56
	57	/*
	58	* Queue used to enqueue UST registration request (ust_commant) and protected
	59	* by a futex with a scheme N wakers / 1 waiters. See futex.c/.h
	60	*/
	61	struct ust_cmd_queue {
	62	int32_t futex;
	63	struct cds_wfq_queue queue;
	64	};
	65
	66	#endif /* _LTT_SESSIOND_H */