1//===-- Unittests for setitimer -------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM
4// Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#include "hdr/types/struct_itimerval.h"
11#include "hdr/types/struct_sigaction.h"
12#include "src/signal/sigaction.h"
13#include "src/signal/sigemptyset.h"
14#include "src/sys/time/setitimer.h"
15#include "test/UnitTest/ErrnoCheckingTest.h"
16#include "test/UnitTest/ErrnoSetterMatcher.h"
17#include "test/UnitTest/Test.h"
18
19using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;
20using LlvmLibcSysTimeSetitimerTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
21
22static bool timer_fired(false);
23
24extern "C" void handle_sigalrm(int) { timer_fired = true; }
25
26TEST_F(LlvmLibcSysTimeSetitimerTest, SmokeTest) {
27 libc_errno = 0;
28 struct sigaction sa;
29 sa.sa_handler = handle_sigalrm;
30 LIBC_NAMESPACE::sigemptyset(&sa.sa_mask);
31 sa.sa_flags = 0;
32 LIBC_NAMESPACE::sigaction(SIGALRM, &sa, nullptr);
33
34 struct itimerval timer;
35 timer.it_value.tv_sec = 0;
36 timer.it_value.tv_usec = 200000;
37 timer.it_interval.tv_sec = 0;
38 timer.it_interval.tv_usec = 0; // One-shot timer
39
40 ASSERT_THAT(LIBC_NAMESPACE::setitimer(0, &timer, nullptr),
41 returns(EQ(0)).with_errno(EQ(0)));
42
43 while (true) {
44 if (timer_fired)
45 break;
46 }
47
48 ASSERT_TRUE(timer_fired);
49}
50
51TEST_F(LlvmLibcSysTimeSetitimerTest, InvalidRetTest) {
52 struct itimerval timer;
53
54 // out of range timer type (which)
55 ASSERT_THAT(LIBC_NAMESPACE::setitimer(99, &timer, nullptr),
56 returns(NE(0)).with_errno(NE(0)));
57}
58

source code of libc/test/src/sys/time/setitimer_test.cpp