1716fd348SMartin Matuska /*
2716fd348SMartin Matuska * CDDL HEADER START
3716fd348SMartin Matuska *
4716fd348SMartin Matuska * The contents of this file are subject to the terms of the
5716fd348SMartin Matuska * Common Development and Distribution License (the "License").
6716fd348SMartin Matuska * You may not use this file except in compliance with the License.
7716fd348SMartin Matuska *
8716fd348SMartin Matuska * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9716fd348SMartin Matuska * or http://opensource.org/licenses/CDDL-1.0.
10716fd348SMartin Matuska * See the License for the specific language governing permissions
11716fd348SMartin Matuska * and limitations under the License.
12716fd348SMartin Matuska *
13716fd348SMartin Matuska * When distributing Covered Code, include this CDDL HEADER in each
14716fd348SMartin Matuska * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15716fd348SMartin Matuska * If applicable, add the following below this CDDL HEADER, with the
16716fd348SMartin Matuska * fields enclosed by brackets "[]" replaced with your own identifying
17716fd348SMartin Matuska * information: Portions Copyright [yyyy] [name of copyright owner]
18716fd348SMartin Matuska *
19716fd348SMartin Matuska * CDDL HEADER END
20716fd348SMartin Matuska */
21716fd348SMartin Matuska
22716fd348SMartin Matuska #include <stdlib.h>
23716fd348SMartin Matuska #include <stdio.h>
24716fd348SMartin Matuska #include <string.h>
25716fd348SMartin Matuska #include <sys/mman.h>
26716fd348SMartin Matuska #include <sys/stat.h>
27716fd348SMartin Matuska #include <sys/time.h>
28716fd348SMartin Matuska #include <fcntl.h>
29716fd348SMartin Matuska #include <unistd.h>
30716fd348SMartin Matuska #include <time.h>
31716fd348SMartin Matuska
32716fd348SMartin Matuska static void
cleanup(char * file)33716fd348SMartin Matuska cleanup(char *file)
34716fd348SMartin Matuska {
35be181ee2SMartin Matuska (void) remove(file);
36716fd348SMartin Matuska }
37716fd348SMartin Matuska
38716fd348SMartin Matuska int
main(int argc,char * argv[])39716fd348SMartin Matuska main(int argc, char *argv[])
40716fd348SMartin Matuska {
41716fd348SMartin Matuska char *testdir = getenv("TESTDIR");
42716fd348SMartin Matuska if (!testdir) {
43716fd348SMartin Matuska fprintf(stderr, "environment variable TESTDIR not set\n");
44716fd348SMartin Matuska return (1);
45716fd348SMartin Matuska }
46716fd348SMartin Matuska
47716fd348SMartin Matuska struct stat st;
48716fd348SMartin Matuska umask(0);
49716fd348SMartin Matuska if (stat(testdir, &st) != 0 &&
50716fd348SMartin Matuska mkdir(testdir, 0777) != 0) {
51716fd348SMartin Matuska perror("mkdir");
52716fd348SMartin Matuska return (1);
53716fd348SMartin Matuska }
54716fd348SMartin Matuska
55716fd348SMartin Matuska if (argc > 3) {
56716fd348SMartin Matuska fprintf(stderr, "usage: %s "
57716fd348SMartin Matuska "[run time in mins] "
58716fd348SMartin Matuska "[max msync time in ms]\n", argv[0]);
59716fd348SMartin Matuska return (1);
60716fd348SMartin Matuska }
61716fd348SMartin Matuska
62*2a58b312SMartin Matuska int run_time_mins = 1;
63716fd348SMartin Matuska if (argc >= 2) {
64716fd348SMartin Matuska run_time_mins = atoi(argv[1]);
65716fd348SMartin Matuska }
66716fd348SMartin Matuska
67716fd348SMartin Matuska int max_msync_time_ms = 1000;
68716fd348SMartin Matuska if (argc >= 3) {
69716fd348SMartin Matuska max_msync_time_ms = atoi(argv[2]);
70716fd348SMartin Matuska }
71716fd348SMartin Matuska
72716fd348SMartin Matuska char filepath[512];
73716fd348SMartin Matuska filepath[0] = '\0';
74716fd348SMartin Matuska char *file = &filepath[0];
75716fd348SMartin Matuska
76be181ee2SMartin Matuska (void) snprintf(file, 512, "%s/msync_file", testdir);
77716fd348SMartin Matuska
78716fd348SMartin Matuska const int LEN = 8;
79716fd348SMartin Matuska cleanup(file);
80716fd348SMartin Matuska
81716fd348SMartin Matuska int fd = open(file, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR |
82716fd348SMartin Matuska S_IRGRP | S_IROTH);
83716fd348SMartin Matuska
84716fd348SMartin Matuska if (fd == -1) {
85716fd348SMartin Matuska (void) fprintf(stderr, "%s: %s: ", argv[0], file);
86716fd348SMartin Matuska perror("open");
87716fd348SMartin Matuska return (1);
88716fd348SMartin Matuska }
89716fd348SMartin Matuska
90716fd348SMartin Matuska if (ftruncate(fd, LEN) != 0) {
91716fd348SMartin Matuska perror("ftruncate");
92716fd348SMartin Matuska cleanup(file);
93716fd348SMartin Matuska return (1);
94716fd348SMartin Matuska }
95716fd348SMartin Matuska
96716fd348SMartin Matuska void *ptr = mmap(NULL, LEN, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
97716fd348SMartin Matuska
98716fd348SMartin Matuska if (ptr == MAP_FAILED) {
99716fd348SMartin Matuska perror("mmap");
100716fd348SMartin Matuska cleanup(file);
101716fd348SMartin Matuska return (1);
102716fd348SMartin Matuska }
103716fd348SMartin Matuska
104716fd348SMartin Matuska struct timeval tstart;
105716fd348SMartin Matuska gettimeofday(&tstart, NULL);
106716fd348SMartin Matuska
107716fd348SMartin Matuska long long x = 0LL;
108716fd348SMartin Matuska
109716fd348SMartin Matuska for (;;) {
110716fd348SMartin Matuska *((long long *)ptr) = x;
111716fd348SMartin Matuska x++;
112716fd348SMartin Matuska
113716fd348SMartin Matuska struct timeval t1, t2;
114716fd348SMartin Matuska gettimeofday(&t1, NULL);
115716fd348SMartin Matuska if (msync(ptr, LEN, MS_SYNC|MS_INVALIDATE) != 0) {
116716fd348SMartin Matuska perror("msync");
117716fd348SMartin Matuska cleanup(file);
118716fd348SMartin Matuska return (1);
119716fd348SMartin Matuska }
120716fd348SMartin Matuska
121716fd348SMartin Matuska gettimeofday(&t2, NULL);
122716fd348SMartin Matuska
123716fd348SMartin Matuska double elapsed = (t2.tv_sec - t1.tv_sec) * 1000.0;
124716fd348SMartin Matuska elapsed += ((t2.tv_usec - t1.tv_usec) / 1000.0);
125716fd348SMartin Matuska if (elapsed > max_msync_time_ms) {
126716fd348SMartin Matuska fprintf(stderr, "slow msync: %f ms\n", elapsed);
127be181ee2SMartin Matuska if (munmap(ptr, LEN) != 0)
128be181ee2SMartin Matuska perror("munmap");
129716fd348SMartin Matuska cleanup(file);
130716fd348SMartin Matuska return (1);
131716fd348SMartin Matuska }
132716fd348SMartin Matuska
133716fd348SMartin Matuska double elapsed_start = (t2.tv_sec - tstart.tv_sec) * 1000.0;
134716fd348SMartin Matuska elapsed_start += ((t2.tv_usec - tstart.tv_usec) / 1000.0);
135716fd348SMartin Matuska if (elapsed_start > run_time_mins * 60 * 1000) {
136716fd348SMartin Matuska break;
137716fd348SMartin Matuska }
138716fd348SMartin Matuska }
139716fd348SMartin Matuska
140716fd348SMartin Matuska if (munmap(ptr, LEN) != 0) {
141716fd348SMartin Matuska perror("munmap");
142716fd348SMartin Matuska cleanup(file);
143716fd348SMartin Matuska return (1);
144716fd348SMartin Matuska }
145716fd348SMartin Matuska
146716fd348SMartin Matuska if (close(fd) != 0) {
147716fd348SMartin Matuska perror("close");
148716fd348SMartin Matuska }
149716fd348SMartin Matuska
150716fd348SMartin Matuska cleanup(file);
151716fd348SMartin Matuska return (0);
152716fd348SMartin Matuska }
153