t-memstat.c revision 168516 
1/*
2 * Copyright (c) 2005-2007 Sendmail, Inc. and its suppliers.
3 *      All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 */
9
10#include <sm/gen.h>
11SM_IDSTR(id, "@(#)$Id: t-memstat.c,v 1.9 2007/03/14 21:41:09 ca Exp $")
12
13#include <sm/misc.h>
14
15/*
16**  Simple test program for memstat
17*/
18
19#include <stdlib.h>
20#include <unistd.h>
21#include <stdio.h>
22#include <strings.h>
23#include <string.h>
24
25extern char *optarg;
26extern int optind;
27
28void
29usage(prg)
30	char *prg;
31{
32	fprintf(stderr, "usage: %s [options]\n", prg);
33	fprintf(stderr, "options:\n");
34	fprintf(stderr, "-l n    loop n times\n");
35	fprintf(stderr, "-m n    allocate n bytes per iteration\n");
36	fprintf(stderr, "-r name use name as resource to query\n");
37	fprintf(stderr, "-s n    sleep n seconds per iteration\n");
38}
39
40int
41main(argc, argv)
42	int argc;
43	char **argv;
44{
45	int r, r2, i, l, slp, sz;
46	long v;
47	char *resource;
48
49	l = 1;
50	sz = slp = 0;
51	resource = NULL;
52	while ((r = getopt(argc, argv, "l:m:r:s:")) != -1)
53	{
54		switch ((char) r)
55		{
56		  case 'l':
57			l = strtol(optarg, NULL, 0);
58			break;
59
60		  case 'm':
61			sz = strtol(optarg, NULL, 0);
62			break;
63
64		  case 'r':
65			resource = strdup(optarg);
66			break;
67
68		  case 's':
69			slp = strtol(optarg, NULL, 0);
70			break;
71
72		  default:
73			usage(argv[0]);
74			exit(1);
75		}
76	}
77
78	r = sm_memstat_open();
79	r2 = -1;
80	for (i = 0; i < l; i++)
81	{
82		char *mem;
83
84		r2 = sm_memstat_get(resource, &v);
85		if (slp > 0 && i + 1 < l && 0 == r)
86		{
87			printf("open=%d, memstat=%d, %s=%ld\n", r, r2,
88				resource != NULL ? resource : "default-value",
89				v);
90			sleep(slp);
91			if (sz > 0)
92			{
93				/*
94				**  Just allocate some memory to test the
95				**  values that are returned.
96				**  Note: this is a memory leak, but that
97				**  doesn't matter here.
98				*/
99
100				mem = malloc(sz);
101				if (NULL == mem)
102					printf("malloc(%d) failed\n", sz);
103			}
104		}
105	}
106	printf("open=%d, memstat=%d, %s=%ld\n", r, r2,
107		resource != NULL ? resource : "default-value", v);
108	r = sm_memstat_close();
109	return r;
110}
111