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Centralize usage in usage(), and use in preference to fprintf().

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List possible tests in usage().

When running a test, print the test name.
This commit is contained in:
Robert Watson 2005-04-10 02:06:49 +00:00
parent e5dd4df84c
commit 11853de0a1
1 changed files with 16 additions and 8 deletions
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24
tools/tools/syscall_timing/syscall_timing.c
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@ -128,16 +128,24 @@ test_socket(int num)
}
}
static void
usage(void)
{
fprintf(stderr, "syscall_timing [iterations] [test]\n");
fprintf(stderr, "supported tests: getuid getppid clock_gettime "
"pipe socket\n");
exit(-1);
}
int
main(int argc, char *argv[])
{
struct timespec ts_start, ts_end, ts_res;
int count;
if (argc != 3) {
fprintf(stderr, "syscall_timing [iterations] [test]\n");
exit(-1);
}
if (argc != 3)
usage();
count = atoi(argv[1]);
assert(clock_getres(CLOCK_REALTIME, &ts_res) == 0);
@ -163,13 +171,13 @@ main(int argc, char *argv[])
assert(clock_gettime(CLOCK_REALTIME, &ts_start) == 0);
test_socket(count);
assert(clock_gettime(CLOCK_REALTIME, &ts_end) == 0);
} else {
fprintf(stderr, "syscal [iterations] [test]\n");
exit(-1);
}
} else
usage();
timespecsub(&ts_end, &ts_start);
printf("test: %s\n", argv[2]);
printf("%d.%09lu for %d iterations\n", ts_end.tv_sec,
ts_end.tv_nsec, count);