p_bench_pthread_create.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* ==== p_bench_pthread_create.c =============================================
- * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
- *
- * Description : Benchmark mutex lock and unlock times
- *
- * 1.00 93/11/08 proven
- * -Started coding this file.
- */
- #define PTHREAD_KERNEL
- #include <errno.h>
- #include <pthread.h>
- #include <stdio.h>
- extern pthread_attr_t pthread_attr_default;
- /* ==========================================================================
- * new_thread();
- */
- void * new_thread(void * arg)
- {
- PANIC();
- }
- /* ==========================================================================
- * usage();
- */
- void usage(void)
- {
- printf("p_bench_getpid [-d?] [-c count]n");
- errno = 0;
- }
- main(int argc, char **argv)
- {
- struct timeval starttime, endtime;
- pthread_mutex_t lock;
- pthread_t thread_id;
- int count = 10000;
- int debug = 0;
- int i;
- char word[256];
- /* Getopt variables. */
- extern int optind, opterr;
- extern char *optarg;
- pthread_init();
- /* Shut timer off */
- machdep_unset_thread_timer(NULL);
- pthread_attr_default.stackaddr_attr = &word;
- while ((word[0] = getopt(argc, argv, "c:d?")) != (char)EOF) {
- switch (word[0]) {
- case 'd':
- debug++;
- break;
- case 'c':
- count = atoi(optarg);
- break;
- case '?':
- usage();
- return(OK);
- default:
- usage();
- return(NOTOK);
- }
- }
- if (gettimeofday(&starttime, NULL)) {
- perror ("gettimeofday");
- return 1;
- }
- for (i = 0; i < count; i++) {
- if (pthread_create(&thread_id, & pthread_attr_default, new_thread, NULL)) {
- printf("Bad pthread create routinen");
- exit(1);
- }
- }
- if (gettimeofday(&endtime, NULL)) {
- perror ("gettimeofday");
- return 1;
- }
- printf("%d getpid calls took %d usecs.n", count,
- (endtime.tv_sec - starttime.tv_sec) * 1000000 +
- (endtime.tv_usec - starttime.tv_usec));
- return 0;
- }