mirror of
https://github.com/berkeleydb/libdb.git
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117 lines
2.3 KiB
C#
117 lines
2.3 KiB
C#
/*
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* writetest --
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*
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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void usage(void);
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct timeval start_time, end_time;
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double usecs;
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long val;
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int bytes, ch, cnt, fd, ops;
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char *fname, buf[100 * 1024];
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bytes = 256;
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fname = "testfile";
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ops = 1000;
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while ((ch = getopt(argc, argv, "b:f:o:")) != EOF)
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switch (ch) {
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case 'b':
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if ((bytes = atoi(optarg)) > sizeof(buf)) {
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fprintf(stderr,
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"max -b option %d\n", sizeof(buf));
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exit (1);
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}
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break;
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case 'f':
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fname = optarg;
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break;
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case 'o':
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if ((ops = atoi(optarg)) <= 0) {
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fprintf(stderr, "illegal -o option value\n");
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exit (1);
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}
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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(void)unlink(fname);
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if ((fd = open(fname, O_RDWR | O_CREAT, 0666)) == -1) {
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perror(fname);
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exit (1);
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}
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memset(buf, 0, bytes);
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printf("Running: %d ops\n", ops);
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(void)gettimeofday(&start_time, NULL);
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for (cnt = 0; cnt < ops; ++cnt) {
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if (write(fd, buf, bytes) != bytes) {
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fprintf(stderr, "write: %s\n", strerror(errno));
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exit (1);
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}
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if (lseek(fd, (off_t)0, SEEK_SET) == -1) {
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fprintf(stderr, "lseek: %s\n", strerror(errno));
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exit (1);
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}
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if (fsync(fd) != 0) {
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fprintf(stderr, "fsync: %s\n", strerror(errno));
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exit (1);
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}
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}
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(void)gettimeofday(&end_time, NULL);
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/*
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* Guarantee end_time fields are greater than or equal to start_time
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* fields.
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*/
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if (end_time.tv_sec > start_time.tv_sec) {
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--end_time.tv_sec;
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end_time.tv_usec += 1000000;
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}
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/* Display elapsed time. */
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val = end_time.tv_sec - start_time.tv_sec;
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printf("Elapsed time: %ld:", val / (60 * 60));
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val %= 60 * 60;
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printf("%ld:", val / 60);
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val %= 60;
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printf("%ld.%ld\n", val, end_time.tv_usec - start_time.tv_usec);
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/* Display operations per second. */
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usecs =
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(end_time.tv_sec - start_time.tv_sec) * 1000000 +
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(end_time.tv_usec - start_time.tv_usec);
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printf("%d operations: %7.2f operations per second\n",
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ops, (ops / usecs) * 1000000);
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(void)unlink(fname);
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exit (0);
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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"usage: testfile [-b bytes] [-f file] [-o ops]\n");
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exit(1);
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}
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