203232ffbd
If `::poll` returns and `FD` equals -1, then `ListeningSocket::shutdown` has been called. So, regardless of any other information that could be gleaned from `FDs.revents` or `PollStatus`, it is appropriate to return `std::errc::operation_canceled`. `ListeningSocket::shutdown` copies `FD`'s value to `ObservedFD` then sets `FD` to -1 before canceling `::poll` by calling `::close(ObservedFD)` and writing to the pipe.
123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
#include "llvm/ADT/SmallString.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/FileUtilities.h"
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#include "llvm/Support/raw_socket_stream.h"
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#include "llvm/Testing/Support/Error.h"
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#include "gtest/gtest.h"
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#include <future>
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#include <stdlib.h>
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#include <thread>
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#ifdef _WIN32
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#include "llvm/Support/Windows/WindowsSupport.h"
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#endif
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using namespace llvm;
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namespace {
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bool hasUnixSocketSupport() {
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#ifdef _WIN32
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VersionTuple Ver = GetWindowsOSVersion();
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if (Ver < VersionTuple(10, 0, 0, 17063))
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return false;
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#endif
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return true;
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}
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TEST(raw_socket_streamTest, CLIENT_TO_SERVER_AND_SERVER_TO_CLIENT) {
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if (!hasUnixSocketSupport())
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GTEST_SKIP();
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SmallString<100> SocketPath;
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llvm::sys::fs::createUniquePath("client_server_comms.sock", SocketPath, true);
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// Make sure socket file does not exist. May still be there from the last test
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std::remove(SocketPath.c_str());
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Expected<ListeningSocket> MaybeServerListener =
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ListeningSocket::createUnix(SocketPath);
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ASSERT_THAT_EXPECTED(MaybeServerListener, llvm::Succeeded());
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ListeningSocket ServerListener = std::move(*MaybeServerListener);
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Expected<std::unique_ptr<raw_socket_stream>> MaybeClient =
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raw_socket_stream::createConnectedUnix(SocketPath);
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ASSERT_THAT_EXPECTED(MaybeClient, llvm::Succeeded());
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raw_socket_stream &Client = **MaybeClient;
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Expected<std::unique_ptr<raw_socket_stream>> MaybeServer =
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ServerListener.accept();
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ASSERT_THAT_EXPECTED(MaybeServer, llvm::Succeeded());
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raw_socket_stream &Server = **MaybeServer;
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Client << "01234567";
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Client.flush();
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char Bytes[8];
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ssize_t BytesRead = Server.read(Bytes, 8);
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std::string string(Bytes, 8);
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ASSERT_EQ(8, BytesRead);
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ASSERT_EQ("01234567", string);
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}
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TEST(raw_socket_streamTest, TIMEOUT_PROVIDED) {
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if (!hasUnixSocketSupport())
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GTEST_SKIP();
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SmallString<100> SocketPath;
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llvm::sys::fs::createUniquePath("timout_provided.sock", SocketPath, true);
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// Make sure socket file does not exist. May still be there from the last test
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std::remove(SocketPath.c_str());
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Expected<ListeningSocket> MaybeServerListener =
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ListeningSocket::createUnix(SocketPath);
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ASSERT_THAT_EXPECTED(MaybeServerListener, llvm::Succeeded());
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ListeningSocket ServerListener = std::move(*MaybeServerListener);
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std::chrono::milliseconds Timeout = std::chrono::milliseconds(100);
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Expected<std::unique_ptr<raw_socket_stream>> MaybeServer =
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ServerListener.accept(Timeout);
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ASSERT_EQ(llvm::errorToErrorCode(MaybeServer.takeError()),
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std::errc::timed_out);
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}
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TEST(raw_socket_streamTest, FILE_DESCRIPTOR_CLOSED) {
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if (!hasUnixSocketSupport())
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GTEST_SKIP();
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SmallString<100> SocketPath;
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llvm::sys::fs::createUniquePath("fd_closed.sock", SocketPath, true);
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// Make sure socket file does not exist. May still be there from the last test
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std::remove(SocketPath.c_str());
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Expected<ListeningSocket> MaybeServerListener =
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ListeningSocket::createUnix(SocketPath);
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ASSERT_THAT_EXPECTED(MaybeServerListener, llvm::Succeeded());
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ListeningSocket ServerListener = std::move(*MaybeServerListener);
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// Create a separate thread to close the socket after a delay. Simulates a
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// signal handler calling ServerListener::shutdown
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std::thread CloseThread([&]() {
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std::this_thread::sleep_for(std::chrono::milliseconds(500));
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ServerListener.shutdown();
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});
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Expected<std::unique_ptr<raw_socket_stream>> MaybeServer =
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ServerListener.accept();
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// Wait for the CloseThread to finish
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CloseThread.join();
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ASSERT_EQ(llvm::errorToErrorCode(MaybeServer.takeError()),
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std::errc::operation_canceled);
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}
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} // namespace
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