1//===-- Unittests for epoll_pwait2 ----------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8#include "hdr/sys_epoll_macros.h"
9#include "hdr/types/struct_epoll_event.h"
10#include "hdr/types/struct_timespec.h"
11#include "src/errno/libc_errno.h"
12#include "src/sys/epoll/epoll_create1.h"
13#include "src/sys/epoll/epoll_ctl.h"
14#include "src/sys/epoll/epoll_pwait2.h"
15#include "src/unistd/close.h"
16#include "src/unistd/pipe.h"
17#include "test/UnitTest/ErrnoSetterMatcher.h"
18#include "test/UnitTest/Test.h"
19
20using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;
21
22TEST(LlvmLibcEpollPwaitTest, Basic) {
23 int epfd = LIBC_NAMESPACE::epoll_create1(flags: 0);
24 ASSERT_GT(epfd, 0);
25 ASSERT_ERRNO_SUCCESS();
26
27 int pipefd[2];
28
29 ASSERT_THAT(LIBC_NAMESPACE::pipe(pipefd), Succeeds());
30
31 epoll_event event;
32 event.events = EPOLLOUT;
33 event.data.fd = pipefd[0];
34
35 timespec time_spec;
36 time_spec.tv_sec = 0;
37 time_spec.tv_nsec = 0;
38
39 ASSERT_THAT(LIBC_NAMESPACE::epoll_ctl(epfd, EPOLL_CTL_ADD, pipefd[0], &event),
40 Succeeds());
41
42 // Timeout of 0 causes immediate return. We just need to check that the
43 // interface works, we're not testing the kernel behavior here.
44 ASSERT_THAT(
45 LIBC_NAMESPACE::epoll_pwait2(epfd, &event, 1, &time_spec, nullptr),
46 Succeeds());
47
48 ASSERT_THAT(LIBC_NAMESPACE::epoll_pwait2(-1, &event, 1, &time_spec, nullptr),
49 Fails(EBADF));
50
51 ASSERT_THAT(LIBC_NAMESPACE::epoll_ctl(epfd, EPOLL_CTL_DEL, pipefd[0], &event),
52 Succeeds());
53
54 ASSERT_THAT(LIBC_NAMESPACE::close(pipefd[0]), Succeeds());
55 ASSERT_THAT(LIBC_NAMESPACE::close(pipefd[1]), Succeeds());
56 ASSERT_THAT(LIBC_NAMESPACE::close(epfd), Succeeds());
57}
58

source code of libc/test/src/sys/epoll/linux/epoll_pwait2_test.cpp