| /* |
| * Copyright (c) 2012 The Native Client Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include <inttypes.h> |
| #include <stdio.h> |
| #include <time.h> |
| #include <sys/time.h> |
| |
| #define DEFERRED_STRINGIFY(symbol) #symbol |
| #define SHOW(symbol) \ |
| do { \ |
| printf("Current definition for %s is \"%s\".\n", \ |
| #symbol, DEFERRED_STRINGIFY(symbol)); \ |
| } while (0) |
| |
| void ShowCurrentDefinitions(void) { |
| SHOW(CLOCK_REALTIME); |
| SHOW(CLOCK_MONOTONIC); |
| SHOW(CLOCK_PROCESS_CPUTIME_ID); |
| SHOW(CLOCK_THREAD_CPUTIME_ID); |
| } |
| |
| struct timespec; |
| |
| /* |
| * Basic functionality test: the syscalls are present. |
| */ |
| int TimeTest(int (*func)(clockid_t clk_id, struct timespec *ts), |
| clockid_t clk_id, |
| char const *error_string, |
| char const *success_name) { |
| struct timespec ts; |
| int errs = 0; |
| |
| if (func == clock_getres) { |
| /* |
| * clock_getres should work with NULL passed, where it just acts as a |
| * probe for the validity of the clockid_t. |
| */ |
| |
| if (clock_getres(clk_id, NULL) != 0) { |
| fprintf(stderr, "%s with NULL\n", error_string); |
| ++errs; |
| } |
| } |
| |
| if (0 != (*func)(clk_id, &ts)) { |
| fprintf(stderr, "%s\n", error_string); |
| ++errs; |
| } else { |
| printf("%30s: %lld.%09lu\n", success_name, |
| (int64_t) ts.tv_sec, (unsigned long) ts.tv_nsec); |
| } |
| |
| return errs; |
| } |
| |
| int main(void) { |
| int errs = 0; |
| |
| ShowCurrentDefinitions(); |
| |
| errs += TimeTest(clock_getres, CLOCK_REALTIME, |
| "clock_getres on realtime clock failed", |
| "Realtime clock resolution"); |
| errs += TimeTest(clock_getres, CLOCK_MONOTONIC, |
| "clock_getres on monotonic clock failed", |
| "Monotonic clock resolution"); |
| errs += TimeTest(clock_getres, CLOCK_PROCESS_CPUTIME_ID, |
| "clock_getres on process CPU-time clock failed", |
| "Process CPU-time clock resolution"); |
| errs += TimeTest(clock_getres, CLOCK_THREAD_CPUTIME_ID, |
| "clock_getres on thread CPU-time clock failed", |
| "Thread CPU-time clock resolution"); |
| errs += TimeTest(clock_gettime, CLOCK_REALTIME, |
| "clock_gettime on realtime clock failed", |
| "Realtime clock value"); |
| errs += TimeTest(clock_gettime, CLOCK_MONOTONIC, |
| "clock_gettime on monotonic clock failed", |
| "Monotonic clock value"); |
| errs += TimeTest(clock_gettime, CLOCK_PROCESS_CPUTIME_ID, |
| "clock_gettime on process CPU-time clock failed", |
| "Process CPU-time clock value"); |
| errs += TimeTest(clock_gettime, CLOCK_THREAD_CPUTIME_ID, |
| "clock_gettime on thread CPU-time clock failed", |
| "Thread CPU-time clock value"); |
| return errs; |
| } |