[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
 * as published by the Free Software Foundation; only version 2
 * of the License.
 *
 * 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_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
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; only version 2
	7	* of the License.
	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_SESSIOND_H
	20	#define _LTT_SESSIOND_H
	21
	22	#define _LGPL_SOURCE
	23	#include <urcu.h>
	24	#include <urcu/wfqueue.h>
	25
	26	#include <common/sessiond-comm/sessiond-comm.h>
	27	#include <common/compat/socket.h>
	28
	29	#include "session.h"
	30	#include "ust-app.h"
	31
	32	const char *module_proc_lttng = "/proc/lttng";
	33
	34	extern const char default_home_dir[],
	35	default_tracing_group[],
	36	default_ust_sock_dir[],
	37	default_global_apps_pipe[];
	38
	39	/*
	40	* This contains extra data needed for processing a command received by the
	41	* session daemon from the lttng client.
	42	*/
	43	struct command_ctx {
	44	int ust_sock;
	45	unsigned int lttng_msg_size;
	46	struct ltt_session *session;
	47	struct lttcomm_lttng_msg *llm;
	48	struct lttcomm_session_msg *lsm;
	49	lttng_sock_cred creds;
	50	};
	51
	52	struct ust_command {
	53	int sock;
	54	struct ust_register_msg reg_msg;
	55	struct cds_wfq_node node;
	56	};
	57
	58	/*
	59	* Queue used to enqueue UST registration request (ust_commant) and protected
	60	* by a futex with a scheme N wakers / 1 waiters. See futex.c/.h
	61	*/
	62	struct ust_cmd_queue {
	63	int32_t futex;
	64	struct cds_wfq_queue queue;
	65	};
	66
	67	#endif /* _LTT_SESSIOND_H */