/*
 * varsym..c
 *
 * varsym [threads]
 *
 * tests shared lock using varsym_get()
 */

#include "blib.h"
#include <sys/file.h>
#include <assert.h>

int
main(int ac, char **av)
{
        long long count = 0;
        long long max;
        char c;
        int n;
        int i;
        int j;
        int fd;
        int status;
        char *path;
        char buf[256];
        struct stat st;

        printf("timing standard fstat() syscall\n");

        fd = open("/tmp/lockmgr3.test", O_RDWR|O_CREAT, 0666);
        assert(fd >= 0);
        start_timing();
        while (stop_timing(0, NULL) == 0) {
                fstat(fd, &st);
                fstat(fd, &st);
                fstat(fd, &st);
                fstat(fd, &st);
                ++count;
        }
        max = count * 4;
        close(fd);

        if (ac > 1)
                n = strtol(av[1], NULL, 0);
        else
                n = 1;

        start_timing();
        for (i = 0; i < n; ++i) {
                if (fork() == 0) {
                        asprintf(&path, "/tmp/lockmgr.test");
                        fd = open(path, O_RDWR|O_CREAT, 0666);
                        assert(fd >= 0);
                        for (count = 0; count < max; ++count) {
                                fstat(fd, &st);
                                fstat(fd, &st);
                                fstat(fd, &st);
                                fstat(fd, &st);
                        }
                        _exit(0);
                }
        }
        while (wait3(&status, 0, NULL) >= 0 || errno == EINTR)
                ;
        stop_timing(max * n * 4, "lockmgr3");

        return(0);
}