xref: /titanic_44/usr/src/cmd/stat/common/statcommon.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  *
26*7c478bd9Sstevel@tonic-gate  * Common routines for acquiring snapshots of kstats for
27*7c478bd9Sstevel@tonic-gate  * iostat, mpstat, and vmstat.
28*7c478bd9Sstevel@tonic-gate  */
29*7c478bd9Sstevel@tonic-gate 
30*7c478bd9Sstevel@tonic-gate #ifndef	_STATCOMMON_H
31*7c478bd9Sstevel@tonic-gate #define	_STATCOMMON_H
32*7c478bd9Sstevel@tonic-gate 
33*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
36*7c478bd9Sstevel@tonic-gate extern "C" {
37*7c478bd9Sstevel@tonic-gate #endif
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate #include <stdio.h>
40*7c478bd9Sstevel@tonic-gate #include <kstat.h>
41*7c478bd9Sstevel@tonic-gate #include <sys/time.h>
42*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
43*7c478bd9Sstevel@tonic-gate #include <sys/buf.h>
44*7c478bd9Sstevel@tonic-gate #include <sys/dnlc.h>
45*7c478bd9Sstevel@tonic-gate #include <sys/sysinfo.h>
46*7c478bd9Sstevel@tonic-gate #include <sys/vmmeter.h>
47*7c478bd9Sstevel@tonic-gate #include <sys/processor.h>
48*7c478bd9Sstevel@tonic-gate #include <sys/pset.h>
49*7c478bd9Sstevel@tonic-gate 
50*7c478bd9Sstevel@tonic-gate /* No CPU present at this CPU position */
51*7c478bd9Sstevel@tonic-gate #define	ID_NO_CPU -1
52*7c478bd9Sstevel@tonic-gate /* CPU belongs to no pset (we number this as "pset 0")  */
53*7c478bd9Sstevel@tonic-gate #define	ID_NO_PSET 0
54*7c478bd9Sstevel@tonic-gate /* CPU is usable */
55*7c478bd9Sstevel@tonic-gate #define	CPU_ONLINE(s) ((s) == P_ONLINE || (s) == P_NOINTR)
56*7c478bd9Sstevel@tonic-gate /* will the CPU have kstats */
57*7c478bd9Sstevel@tonic-gate #define	CPU_ACTIVE(c) (CPU_ONLINE((c)->cs_state) && (c)->cs_id != ID_NO_CPU)
58*7c478bd9Sstevel@tonic-gate /* IO device has no identified ID */
59*7c478bd9Sstevel@tonic-gate #define	IODEV_NO_ID -1
60*7c478bd9Sstevel@tonic-gate /* no limit to iodevs to collect */
61*7c478bd9Sstevel@tonic-gate #define	UNLIMITED_IODEVS ((size_t)-1)
62*7c478bd9Sstevel@tonic-gate 
63*7c478bd9Sstevel@tonic-gate enum snapshot_types {
64*7c478bd9Sstevel@tonic-gate 	/* All CPUs separately */
65*7c478bd9Sstevel@tonic-gate 	SNAP_CPUS 		= 1 << 0,
66*7c478bd9Sstevel@tonic-gate 	/* Aggregated processor sets */
67*7c478bd9Sstevel@tonic-gate 	SNAP_PSETS		= 1 << 1,
68*7c478bd9Sstevel@tonic-gate 	/* sys-wide stats including aggregated CPU stats */
69*7c478bd9Sstevel@tonic-gate 	SNAP_SYSTEM		= 1 << 2,
70*7c478bd9Sstevel@tonic-gate 	/* interrupt sources and counts */
71*7c478bd9Sstevel@tonic-gate 	SNAP_INTERRUPTS 	= 1 << 3,
72*7c478bd9Sstevel@tonic-gate 	/* cache flushes */
73*7c478bd9Sstevel@tonic-gate 	SNAP_FLUSHES		= 1 << 4,
74*7c478bd9Sstevel@tonic-gate 	/* disk etc. stats */
75*7c478bd9Sstevel@tonic-gate 	SNAP_IODEVS		= 1 << 5,
76*7c478bd9Sstevel@tonic-gate 	/* disk controller aggregates */
77*7c478bd9Sstevel@tonic-gate 	SNAP_CONTROLLERS	= 1 << 6,
78*7c478bd9Sstevel@tonic-gate 	/* mpxio (multipath) paths */
79*7c478bd9Sstevel@tonic-gate 	SNAP_IOPATHS		= 1 << 7,
80*7c478bd9Sstevel@tonic-gate 	/* disk error stats */
81*7c478bd9Sstevel@tonic-gate 	SNAP_IODEV_ERRORS	= 1 << 8,
82*7c478bd9Sstevel@tonic-gate 	/* pretty names for iodevs */
83*7c478bd9Sstevel@tonic-gate 	SNAP_IODEV_PRETTY	= 1 << 9
84*7c478bd9Sstevel@tonic-gate };
85*7c478bd9Sstevel@tonic-gate 
86*7c478bd9Sstevel@tonic-gate struct cpu_snapshot {
87*7c478bd9Sstevel@tonic-gate 	/* may be ID_NO_CPU if no CPU present */
88*7c478bd9Sstevel@tonic-gate 	processorid_t cs_id;
89*7c478bd9Sstevel@tonic-gate 	/* may be ID_NO_PSET if no pset */
90*7c478bd9Sstevel@tonic-gate 	psetid_t cs_pset_id;
91*7c478bd9Sstevel@tonic-gate 	/* as in p_online(2) */
92*7c478bd9Sstevel@tonic-gate 	int cs_state;
93*7c478bd9Sstevel@tonic-gate 	/* stats for this CPU */
94*7c478bd9Sstevel@tonic-gate 	kstat_t cs_vm;
95*7c478bd9Sstevel@tonic-gate 	kstat_t cs_sys;
96*7c478bd9Sstevel@tonic-gate };
97*7c478bd9Sstevel@tonic-gate 
98*7c478bd9Sstevel@tonic-gate struct pset_snapshot {
99*7c478bd9Sstevel@tonic-gate 	/* ID may be zero to indicate the "none set" */
100*7c478bd9Sstevel@tonic-gate 	psetid_t ps_id;
101*7c478bd9Sstevel@tonic-gate 	/* number of CPUs in set */
102*7c478bd9Sstevel@tonic-gate 	size_t ps_nr_cpus;
103*7c478bd9Sstevel@tonic-gate 	/* the CPUs in this set */
104*7c478bd9Sstevel@tonic-gate 	struct cpu_snapshot **ps_cpus;
105*7c478bd9Sstevel@tonic-gate };
106*7c478bd9Sstevel@tonic-gate 
107*7c478bd9Sstevel@tonic-gate struct intr_snapshot {
108*7c478bd9Sstevel@tonic-gate 	/* name of interrupt source */
109*7c478bd9Sstevel@tonic-gate 	char is_name[KSTAT_STRLEN];
110*7c478bd9Sstevel@tonic-gate 	/* total number of interrupts from this source */
111*7c478bd9Sstevel@tonic-gate 	ulong_t is_total;
112*7c478bd9Sstevel@tonic-gate };
113*7c478bd9Sstevel@tonic-gate 
114*7c478bd9Sstevel@tonic-gate struct sys_snapshot {
115*7c478bd9Sstevel@tonic-gate 	sysinfo_t ss_sysinfo;
116*7c478bd9Sstevel@tonic-gate 	vminfo_t ss_vminfo;
117*7c478bd9Sstevel@tonic-gate 	struct nc_stats ss_nc;
118*7c478bd9Sstevel@tonic-gate 	/* vm/sys stats aggregated across all CPUs */
119*7c478bd9Sstevel@tonic-gate 	kstat_t ss_agg_vm;
120*7c478bd9Sstevel@tonic-gate 	kstat_t ss_agg_sys;
121*7c478bd9Sstevel@tonic-gate 	/* ticks since boot */
122*7c478bd9Sstevel@tonic-gate 	ulong_t ss_ticks;
123*7c478bd9Sstevel@tonic-gate 	long ss_deficit;
124*7c478bd9Sstevel@tonic-gate };
125*7c478bd9Sstevel@tonic-gate 
126*7c478bd9Sstevel@tonic-gate /* order is significant (see sort_before()) */
127*7c478bd9Sstevel@tonic-gate enum iodev_type {
128*7c478bd9Sstevel@tonic-gate 	IODEV_CONTROLLER	= 1 << 0,
129*7c478bd9Sstevel@tonic-gate 	IODEV_DISK		= 1 << 1,
130*7c478bd9Sstevel@tonic-gate 	IODEV_PARTITION		= 1 << 2,
131*7c478bd9Sstevel@tonic-gate 	IODEV_TAPE		= 1 << 3,
132*7c478bd9Sstevel@tonic-gate 	IODEV_NFS		= 1 << 4,
133*7c478bd9Sstevel@tonic-gate 	IODEV_IOPATH		= 1 << 5,
134*7c478bd9Sstevel@tonic-gate 	IODEV_UNKNOWN		= 1 << 6
135*7c478bd9Sstevel@tonic-gate };
136*7c478bd9Sstevel@tonic-gate 
137*7c478bd9Sstevel@tonic-gate /* identify a disk, partition, etc. */
138*7c478bd9Sstevel@tonic-gate struct iodev_id {
139*7c478bd9Sstevel@tonic-gate 	int id;
140*7c478bd9Sstevel@tonic-gate 	/* target id (for disks) */
141*7c478bd9Sstevel@tonic-gate 	char tid[KSTAT_STRLEN];
142*7c478bd9Sstevel@tonic-gate };
143*7c478bd9Sstevel@tonic-gate 
144*7c478bd9Sstevel@tonic-gate /*
145*7c478bd9Sstevel@tonic-gate  * Used for disks, partitions, tapes, nfs, controllers, iopaths
146*7c478bd9Sstevel@tonic-gate  * Each entry can be a branch of a tree; for example, the disks
147*7c478bd9Sstevel@tonic-gate  * of a controller constitute the children of the controller
148*7c478bd9Sstevel@tonic-gate  * iodev_snapshot. This relationship is not strictly maintained
149*7c478bd9Sstevel@tonic-gate  * if is_pretty can't be found.
150*7c478bd9Sstevel@tonic-gate  */
151*7c478bd9Sstevel@tonic-gate struct iodev_snapshot {
152*7c478bd9Sstevel@tonic-gate 	/* original kstat name */
153*7c478bd9Sstevel@tonic-gate 	char is_name[KSTAT_STRLEN];
154*7c478bd9Sstevel@tonic-gate 	enum iodev_type is_type;
155*7c478bd9Sstevel@tonic-gate 	/* ID if meaningful */
156*7c478bd9Sstevel@tonic-gate 	struct iodev_id is_id;
157*7c478bd9Sstevel@tonic-gate 	/* parent ID if meaningful */
158*7c478bd9Sstevel@tonic-gate 	struct iodev_id is_parent_id;
159*7c478bd9Sstevel@tonic-gate 	/* user-friendly name if found */
160*7c478bd9Sstevel@tonic-gate 	char *is_pretty;
161*7c478bd9Sstevel@tonic-gate 	/* device ID if applicable */
162*7c478bd9Sstevel@tonic-gate 	char *is_devid;
163*7c478bd9Sstevel@tonic-gate 	/* mount-point if applicable */
164*7c478bd9Sstevel@tonic-gate 	char *is_dname;
165*7c478bd9Sstevel@tonic-gate 	/* number of direct children */
166*7c478bd9Sstevel@tonic-gate 	int is_nr_children;
167*7c478bd9Sstevel@tonic-gate 	/* children of this I/O device */
168*7c478bd9Sstevel@tonic-gate 	struct iodev_snapshot *is_children;
169*7c478bd9Sstevel@tonic-gate 	/* standard I/O stats */
170*7c478bd9Sstevel@tonic-gate 	kstat_io_t is_stats;
171*7c478bd9Sstevel@tonic-gate 	/* iodev error stats */
172*7c478bd9Sstevel@tonic-gate 	kstat_t is_errors;
173*7c478bd9Sstevel@tonic-gate 	/* creation time of the stats */
174*7c478bd9Sstevel@tonic-gate 	hrtime_t is_crtime;
175*7c478bd9Sstevel@tonic-gate 	/* time at which iodev snapshot was taken */
176*7c478bd9Sstevel@tonic-gate 	hrtime_t is_snaptime;
177*7c478bd9Sstevel@tonic-gate 	/* kstat module */
178*7c478bd9Sstevel@tonic-gate 	char is_module[KSTAT_STRLEN];
179*7c478bd9Sstevel@tonic-gate 	/* kstat instance */
180*7c478bd9Sstevel@tonic-gate 	int is_instance;
181*7c478bd9Sstevel@tonic-gate 	/* kstat (only used temporarily) */
182*7c478bd9Sstevel@tonic-gate 	kstat_t *is_ksp;
183*7c478bd9Sstevel@tonic-gate 	struct iodev_snapshot *is_prev;
184*7c478bd9Sstevel@tonic-gate 	struct iodev_snapshot *is_next;
185*7c478bd9Sstevel@tonic-gate };
186*7c478bd9Sstevel@tonic-gate 
187*7c478bd9Sstevel@tonic-gate /* which iodevs to show. */
188*7c478bd9Sstevel@tonic-gate struct iodev_filter {
189*7c478bd9Sstevel@tonic-gate 	/* nr. of iodevs to choose */
190*7c478bd9Sstevel@tonic-gate 	size_t if_max_iodevs;
191*7c478bd9Sstevel@tonic-gate 	/* bit mask of enum io_types to allow */
192*7c478bd9Sstevel@tonic-gate 	int if_allowed_types;
193*7c478bd9Sstevel@tonic-gate 	/* should we show floppy ? if_names can override this */
194*7c478bd9Sstevel@tonic-gate 	int if_skip_floppy;
195*7c478bd9Sstevel@tonic-gate 	/* nr. of named iodevs */
196*7c478bd9Sstevel@tonic-gate 	size_t if_nr_names;
197*7c478bd9Sstevel@tonic-gate 	char **if_names;
198*7c478bd9Sstevel@tonic-gate };
199*7c478bd9Sstevel@tonic-gate 
200*7c478bd9Sstevel@tonic-gate /* The primary structure of a system snapshot. */
201*7c478bd9Sstevel@tonic-gate struct snapshot {
202*7c478bd9Sstevel@tonic-gate 	/* what types were *requested* */
203*7c478bd9Sstevel@tonic-gate 	enum snapshot_types s_types;
204*7c478bd9Sstevel@tonic-gate 	size_t s_nr_cpus;
205*7c478bd9Sstevel@tonic-gate 	struct cpu_snapshot *s_cpus;
206*7c478bd9Sstevel@tonic-gate 	size_t s_nr_psets;
207*7c478bd9Sstevel@tonic-gate 	struct pset_snapshot *s_psets;
208*7c478bd9Sstevel@tonic-gate 	size_t s_nr_intrs;
209*7c478bd9Sstevel@tonic-gate 	struct intr_snapshot *s_intrs;
210*7c478bd9Sstevel@tonic-gate 	size_t s_nr_iodevs;
211*7c478bd9Sstevel@tonic-gate 	struct iodev_snapshot *s_iodevs;
212*7c478bd9Sstevel@tonic-gate 	struct sys_snapshot s_sys;
213*7c478bd9Sstevel@tonic-gate 	struct biostats s_biostats;
214*7c478bd9Sstevel@tonic-gate 	struct flushmeter s_flushes;
215*7c478bd9Sstevel@tonic-gate };
216*7c478bd9Sstevel@tonic-gate 
217*7c478bd9Sstevel@tonic-gate /* print a message and exit with failure */
218*7c478bd9Sstevel@tonic-gate void fail(int do_perror, char *message, ...);
219*7c478bd9Sstevel@tonic-gate 
220*7c478bd9Sstevel@tonic-gate /* strdup str, or exit with failure */
221*7c478bd9Sstevel@tonic-gate char *safe_strdup(char *str);
222*7c478bd9Sstevel@tonic-gate 
223*7c478bd9Sstevel@tonic-gate /* malloc successfully, or exit with failure */
224*7c478bd9Sstevel@tonic-gate void *safe_alloc(size_t size);
225*7c478bd9Sstevel@tonic-gate 
226*7c478bd9Sstevel@tonic-gate /*
227*7c478bd9Sstevel@tonic-gate  * Copy a kstat from src to dst. If the source kstat contains no data,
228*7c478bd9Sstevel@tonic-gate  * then set the destination kstat data to NULL and size to zero.
229*7c478bd9Sstevel@tonic-gate  * Returns 0 on success.
230*7c478bd9Sstevel@tonic-gate  */
231*7c478bd9Sstevel@tonic-gate int kstat_copy(const kstat_t *src, kstat_t *dst);
232*7c478bd9Sstevel@tonic-gate 
233*7c478bd9Sstevel@tonic-gate /*
234*7c478bd9Sstevel@tonic-gate  * Look up the named kstat, and give the ui64 difference i.e.
235*7c478bd9Sstevel@tonic-gate  * new - old, or if old is NULL, return new.
236*7c478bd9Sstevel@tonic-gate  */
237*7c478bd9Sstevel@tonic-gate uint64_t kstat_delta(kstat_t *old, kstat_t *new, char *name);
238*7c478bd9Sstevel@tonic-gate 
239*7c478bd9Sstevel@tonic-gate /*
240*7c478bd9Sstevel@tonic-gate  * Add the integer-valued stats from "src" to the
241*7c478bd9Sstevel@tonic-gate  * existing ones in "dst". If "dst" does not contain
242*7c478bd9Sstevel@tonic-gate  * stats, then a kstat_copy() is performed.
243*7c478bd9Sstevel@tonic-gate  */
244*7c478bd9Sstevel@tonic-gate int kstat_add(const kstat_t *src, kstat_t *dst);
245*7c478bd9Sstevel@tonic-gate 
246*7c478bd9Sstevel@tonic-gate /* return the number of CPUs with kstats (i.e. present and online) */
247*7c478bd9Sstevel@tonic-gate int nr_active_cpus(struct snapshot *ss);
248*7c478bd9Sstevel@tonic-gate 
249*7c478bd9Sstevel@tonic-gate /*
250*7c478bd9Sstevel@tonic-gate  * Return the difference in CPU ticks between the two sys
251*7c478bd9Sstevel@tonic-gate  * kstats.
252*7c478bd9Sstevel@tonic-gate  */
253*7c478bd9Sstevel@tonic-gate uint64_t cpu_ticks_delta(kstat_t *old, kstat_t *new);
254*7c478bd9Sstevel@tonic-gate 
255*7c478bd9Sstevel@tonic-gate /*
256*7c478bd9Sstevel@tonic-gate  * Open the kstat chain. Cannot fail.
257*7c478bd9Sstevel@tonic-gate  */
258*7c478bd9Sstevel@tonic-gate kstat_ctl_t *open_kstat(void);
259*7c478bd9Sstevel@tonic-gate 
260*7c478bd9Sstevel@tonic-gate /*
261*7c478bd9Sstevel@tonic-gate  * Return a struct snapshot based on the snapshot_types parameter
262*7c478bd9Sstevel@tonic-gate  * passed in. iodev_filter may be NULL in which case all iodevs
263*7c478bd9Sstevel@tonic-gate  * are selected if SNAP_IODEVS is passed.
264*7c478bd9Sstevel@tonic-gate  */
265*7c478bd9Sstevel@tonic-gate struct snapshot *acquire_snapshot(kstat_ctl_t *, int, struct iodev_filter *);
266*7c478bd9Sstevel@tonic-gate 
267*7c478bd9Sstevel@tonic-gate /* free a snapshot */
268*7c478bd9Sstevel@tonic-gate void free_snapshot(struct snapshot *ss);
269*7c478bd9Sstevel@tonic-gate 
270*7c478bd9Sstevel@tonic-gate typedef void (*snapshot_cb)(void *old, void *new, void *data);
271*7c478bd9Sstevel@tonic-gate 
272*7c478bd9Sstevel@tonic-gate /*
273*7c478bd9Sstevel@tonic-gate  * Call the call back for each pair of data items of the given type,
274*7c478bd9Sstevel@tonic-gate  * passing the data pointer passed in as well. If an item has been
275*7c478bd9Sstevel@tonic-gate  * added, the first pointer will be NULL; if removed, the second pointer
276*7c478bd9Sstevel@tonic-gate  * will be NULL.
277*7c478bd9Sstevel@tonic-gate  *
278*7c478bd9Sstevel@tonic-gate  * A non-zero return value indicates configuration has changed.
279*7c478bd9Sstevel@tonic-gate  */
280*7c478bd9Sstevel@tonic-gate int snapshot_walk(enum snapshot_types type, struct snapshot *old,
281*7c478bd9Sstevel@tonic-gate     struct snapshot *new, snapshot_cb cb, void *data);
282*7c478bd9Sstevel@tonic-gate 
283*7c478bd9Sstevel@tonic-gate /*
284*7c478bd9Sstevel@tonic-gate  * Output a line detailing any configuration changes such as a CPU
285*7c478bd9Sstevel@tonic-gate  * brought online, etc, bracketed by << >>.
286*7c478bd9Sstevel@tonic-gate  */
287*7c478bd9Sstevel@tonic-gate void snapshot_report_changes(struct snapshot *old, struct snapshot *new);
288*7c478bd9Sstevel@tonic-gate 
289*7c478bd9Sstevel@tonic-gate /* Return non-zero if configuration has changed. */
290*7c478bd9Sstevel@tonic-gate int snapshot_has_changed(struct snapshot *old, struct snapshot *new);
291*7c478bd9Sstevel@tonic-gate 
292*7c478bd9Sstevel@tonic-gate /* free the given iodev */
293*7c478bd9Sstevel@tonic-gate void free_iodev(struct iodev_snapshot *iodev);
294*7c478bd9Sstevel@tonic-gate 
295*7c478bd9Sstevel@tonic-gate /* acquire the I/O devices */
296*7c478bd9Sstevel@tonic-gate int acquire_iodevs(struct snapshot *ss, kstat_ctl_t *kc,
297*7c478bd9Sstevel@tonic-gate     struct iodev_filter *df);
298*7c478bd9Sstevel@tonic-gate 
299*7c478bd9Sstevel@tonic-gate /* strcmp-style I/O device comparator */
300*7c478bd9Sstevel@tonic-gate int iodev_cmp(struct iodev_snapshot *io1, struct iodev_snapshot *io2);
301*7c478bd9Sstevel@tonic-gate 
302*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
303*7c478bd9Sstevel@tonic-gate }
304*7c478bd9Sstevel@tonic-gate #endif
305*7c478bd9Sstevel@tonic-gate 
306*7c478bd9Sstevel@tonic-gate #endif /* _STATCOMMON_H */
307