xref: /illumos-gate/usr/src/cmd/rcap/common/rcapd_stat.h (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_RCAPD_STAT_H
27 #define	_RCAPD_STAT_H
28 
29 #ifdef	__cplusplus
30 extern "C" {
31 #endif
32 
33 /*
34  * Default path to statistics file
35  */
36 #define	STAT_FILE_DIR	"/var/run/daemon"
37 #define	STAT_FILE_DEFAULT	STAT_FILE_DIR	"/rcap.stat"
38 
39 /*
40  * Statistics file header.
41  */
42 #define	RC_MODE_LEN	16
43 typedef struct rcapd_stat_hdr {
44 	/*
45 	 * sizeof pid_t can vary, so we use a fixed 64-bit quantity.
46 	 */
47 	uint64_t	rs_pid;			/* pid of producer */
48 	hrtime_t	rs_time;		/* time recorded */
49 
50 	/*
51 	 * Physical memory pressure statistics, in percent.
52 	 */
53 	uint32_t	rs_pressure_cur;	/* current memory pressure */
54 	uint32_t	rs_pressure_cap;	/* minimum cap enforcement p. */
55 
56 	uint64_t	rs_pressure_sample;	/* count of pr. samplings */
57 	char		rs_mode[RC_MODE_LEN];	/* mode ("project" only) */
58 } rcapd_stat_hdr_t;
59 
60 extern pid_t stat_get_rcapd_pid(char *);
61 
62 #ifdef	__cplusplus
63 }
64 #endif
65 
66 #endif	/* _RCAPD_STAT_H */
67