procstat_rusage.c revision 283927 
1/*-
2 * Copyright (c) 2012 Hudson River Trading LLC
3 * Written by: John H. Baldwin <jhb@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/10/usr.bin/procstat/procstat_rusage.c 283927 2015-06-02 19:20:39Z jhb $");
30
31#include <sys/param.h>
32#include <sys/sysctl.h>
33#include <sys/user.h>
34
35#include <libprocstat.h>
36#include <stdbool.h>
37#include <stdio.h>
38#include <libutil.h>
39
40#include "procstat.h"
41
42static struct {
43	const char *ri_name;
44	bool	ri_humanize;
45	int	ri_scale;
46} rusage_info[] = {
47	{ "maximum RSS", true, 1 },
48	{ "integral shared memory", true, 1 },
49	{ "integral unshared data", true, 1 },
50	{ "integral unshared stack", true, 1 },
51	{ "page reclaims", false, 0 },
52	{ "page faults", false, 0 },
53	{ "swaps", false, 0 },
54	{ "block reads", false, 0 },
55	{ "block writes", false, 0 },
56	{ "messages sent", false, 0 },
57	{ "messages received", false, 0 },
58	{ "signals received", false, 0 },
59	{ "voluntary context switches", false, 0 },
60	{ "involuntary context switches", false, 0 }
61};
62
63/* xxx days hh:mm:ss.uuuuuu */
64static const char *
65format_time(struct timeval *tv)
66{
67	static char buffer[32];
68	int days, hours, minutes, seconds, used;
69
70	minutes = tv->tv_sec / 60;
71	seconds = tv->tv_sec % 60;
72	hours = minutes / 60;
73	minutes %= 60;
74	days = hours / 24;
75	hours %= 24;
76	used = 0;
77	if (days == 1)
78		used += snprintf(buffer, sizeof(buffer), "1 day ");
79	else if (days > 0)
80		used += snprintf(buffer, sizeof(buffer), "%u days ", days);
81
82	snprintf(buffer + used, sizeof(buffer) - used, "%02u:%02u:%02u.%06u   ",
83	    hours, minutes, seconds, (unsigned int)tv->tv_usec);
84	return (buffer);
85}
86
87static const char *
88format_value(long value, bool humanize, int scale)
89{
90	static char buffer[14];
91
92	if (scale != 0)
93		value <<= scale * 10;
94	if (humanize)
95		humanize_number(buffer, sizeof(buffer), value, "B",
96		    scale, HN_DECIMAL);
97	else
98		snprintf(buffer, sizeof(buffer), "%ld   ", value);
99	return (buffer);
100}
101
102static void
103print_prefix(struct kinfo_proc *kipp)
104{
105
106	printf("%5d ", kipp->ki_pid);
107	if (Hflag)
108		printf("%6d ", kipp->ki_tid);
109	printf("%-16s ", kipp->ki_comm);
110}
111
112static void
113print_rusage(struct kinfo_proc *kipp)
114{
115	long *lp;
116	unsigned int i;
117
118	print_prefix(kipp);
119	printf("%-14s %32s\n", "user time",
120	    format_time(&kipp->ki_rusage.ru_utime));
121	print_prefix(kipp);
122	printf("%-14s %32s\n", "system time",
123	    format_time(&kipp->ki_rusage.ru_stime));
124	lp = &kipp->ki_rusage.ru_maxrss;
125	for (i = 0; i < nitems(rusage_info); i++) {
126		print_prefix(kipp);
127		printf("%-32s %14s\n", rusage_info[i].ri_name,
128		    format_value(*lp, rusage_info[i].ri_humanize,
129			rusage_info[i].ri_scale));
130		lp++;
131	}
132}
133
134void
135procstat_rusage(struct procstat *procstat, struct kinfo_proc *kipp)
136{
137	struct kinfo_proc *kip;
138	unsigned int count, i;
139
140	if (!hflag) {
141		printf("%5s ", "PID");
142		if (Hflag)
143			printf("%6s ", "TID");
144		printf("%-16s %-32s %14s\n", "COMM", "RESOURCE",
145		    "VALUE        ");
146	}
147
148	if (!Hflag) {
149		print_rusage(kipp);
150		return;
151	}
152
153	kip = procstat_getprocs(procstat, KERN_PROC_PID | KERN_PROC_INC_THREAD,
154	    kipp->ki_pid, &count);
155	if (kip == NULL)
156		return;
157	kinfo_proc_sort(kip, count);
158	for (i = 0; i < count; i++)
159		print_rusage(&kip[i]);
160	procstat_freeprocs(procstat, kip);
161}
162