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