| // Copyright 2017 The Chromium 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 "mojo/public/cpp/system/wait.h" |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/callback.h" |
| #include "base/strings/string_piece.h" |
| #include "base/threading/platform_thread.h" |
| #include "base/threading/simple_thread.h" |
| #include "base/time/time.h" |
| #include "mojo/public/c/system/types.h" |
| #include "mojo/public/cpp/system/handle_signals_state.h" |
| #include "mojo/public/cpp/system/message_pipe.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace mojo { |
| namespace { |
| |
| using WaitTest = testing::Test; |
| using WaitManyTest = testing::Test; |
| |
| void WriteMessage(const ScopedMessagePipeHandle& handle, |
| const base::StringPiece& message) { |
| MojoResult rv = WriteMessageRaw(handle.get(), message.data(), |
| static_cast<uint32_t>(message.size()), |
| nullptr, 0, MOJO_WRITE_MESSAGE_FLAG_NONE); |
| CHECK_EQ(MOJO_RESULT_OK, rv); |
| } |
| |
| std::string ReadMessage(const ScopedMessagePipeHandle& handle) { |
| uint32_t num_bytes = 0; |
| uint32_t num_handles = 0; |
| MojoResult rv = ReadMessageRaw(handle.get(), nullptr, &num_bytes, nullptr, |
| &num_handles, MOJO_READ_MESSAGE_FLAG_NONE); |
| CHECK_EQ(MOJO_RESULT_RESOURCE_EXHAUSTED, rv); |
| CHECK_EQ(0u, num_handles); |
| |
| std::vector<char> buffer(num_bytes); |
| rv = ReadMessageRaw(handle.get(), buffer.data(), &num_bytes, nullptr, |
| &num_handles, MOJO_READ_MESSAGE_FLAG_NONE); |
| CHECK_EQ(MOJO_RESULT_OK, rv); |
| return std::string(buffer.data(), buffer.size()); |
| } |
| |
| class ThreadedRunner : public base::SimpleThread { |
| public: |
| explicit ThreadedRunner(const base::Closure& callback) |
| : SimpleThread("ThreadedRunner"), callback_(callback) {} |
| ~ThreadedRunner() override { Join(); } |
| |
| void Run() override { callback_.Run(); } |
| |
| private: |
| const base::Closure callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ThreadedRunner); |
| }; |
| |
| TEST_F(WaitTest, InvalidArguments) { |
| Handle invalid_handle; |
| |
| EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
| Wait(invalid_handle, MOJO_HANDLE_SIGNAL_READABLE)); |
| |
| MessagePipe p; |
| Handle valid_handles[2] = {p.handle0.get(), p.handle1.get()}; |
| Handle invalid_handles[2]; |
| MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_NONE, |
| MOJO_HANDLE_SIGNAL_NONE}; |
| size_t result_index = 0; |
| EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
| WaitMany(invalid_handles, signals, 2, &result_index)); |
| EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
| WaitMany(nullptr, signals, 2, &result_index)); |
| EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
| WaitMany(valid_handles, nullptr, 2, &result_index)); |
| } |
| |
| TEST_F(WaitTest, Basic) { |
| MessagePipe p; |
| |
| // Write to one end of the pipe and wait on the other. |
| const char kTestMessage1[] = "how about a nice game of chess?"; |
| WriteMessage(p.handle0, kTestMessage1); |
| EXPECT_EQ(MOJO_RESULT_OK, Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE)); |
| |
| // And make sure we can also grab the handle signals state (with both the C |
| // and C++ library structs.) |
| |
| MojoHandleSignalsState c_hss = {0, 0}; |
| EXPECT_EQ(MOJO_RESULT_OK, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &c_hss)); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE, |
| c_hss.satisfied_signals); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
| MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
| c_hss.satisfiable_signals); |
| |
| HandleSignalsState hss; |
| EXPECT_EQ(MOJO_RESULT_OK, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
| EXPECT_TRUE(hss.readable() && hss.writable() && !hss.peer_closed()); |
| EXPECT_FALSE(hss.never_readable() || hss.never_writable() || |
| hss.never_peer_closed()); |
| |
| // Now close the writing end and wait for peer closure. |
| |
| p.handle0.reset(); |
| EXPECT_EQ(MOJO_RESULT_OK, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_PEER_CLOSED, &hss)); |
| |
| // Still readable as there's still a message queued. No longer writable as |
| // peer closure has been detected. |
| EXPECT_TRUE(hss.readable() && hss.peer_closed() && !hss.writable()); |
| EXPECT_TRUE(hss.never_writable() && !hss.never_readable() && |
| !hss.never_peer_closed()); |
| |
| // Read the message and wait for readable again. Waiting should fail since |
| // there are no more messages and the peer is closed. |
| EXPECT_EQ(kTestMessage1, ReadMessage(p.handle1)); |
| EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
| |
| // Sanity check the signals state again. |
| EXPECT_TRUE(hss.peer_closed() && !hss.readable() && !hss.writable()); |
| EXPECT_TRUE(hss.never_readable() && hss.never_writable() && |
| !hss.never_peer_closed()); |
| } |
| |
| TEST_F(WaitTest, DelayedWrite) { |
| MessagePipe p; |
| |
| ThreadedRunner write_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| // Wait a little while, then write a message. |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| WriteMessage(*handle, "wakey wakey"); |
| }, |
| &p.handle0)); |
| write_after_delay.Start(); |
| |
| HandleSignalsState hss; |
| EXPECT_EQ(MOJO_RESULT_OK, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
| EXPECT_TRUE(hss.readable() && hss.writable() && !hss.peer_closed()); |
| EXPECT_TRUE(!hss.never_readable() && !hss.never_writable() && |
| !hss.never_peer_closed()); |
| } |
| |
| TEST_F(WaitTest, DelayedPeerClosure) { |
| MessagePipe p; |
| |
| ThreadedRunner close_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| // Wait a little while, then close the handle. |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| handle->reset(); |
| }, |
| &p.handle0)); |
| close_after_delay.Start(); |
| |
| HandleSignalsState hss; |
| EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
| Wait(p.handle1.get(), MOJO_HANDLE_SIGNAL_READABLE, &hss)); |
| EXPECT_TRUE(!hss.readable() && !hss.writable() && hss.peer_closed()); |
| EXPECT_TRUE(hss.never_readable() && hss.never_writable() && |
| !hss.never_peer_closed()); |
| } |
| |
| TEST_F(WaitTest, CloseWhileWaiting) { |
| MessagePipe p; |
| ThreadedRunner close_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| handle->reset(); |
| }, |
| &p.handle0)); |
| close_after_delay.Start(); |
| EXPECT_EQ(MOJO_RESULT_CANCELLED, |
| Wait(p.handle0.get(), MOJO_HANDLE_SIGNAL_READABLE)); |
| } |
| |
| TEST_F(WaitManyTest, Basic) { |
| MessagePipe p; |
| |
| const char kTestMessage1[] = "hello"; |
| WriteMessage(p.handle0, kTestMessage1); |
| |
| // Wait for either handle to become readable. Wait twice, just to verify that |
| // we can use either the C or C++ signaling state structure for the last |
| // argument. |
| |
| Handle handles[2] = {p.handle0.get(), p.handle1.get()}; |
| MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE}; |
| size_t result_index = 0; |
| MojoHandleSignalsState c_hss[2]; |
| HandleSignalsState hss[2]; |
| |
| EXPECT_EQ(MOJO_RESULT_OK, |
| WaitMany(handles, signals, 2, &result_index, c_hss)); |
| EXPECT_EQ(1u, result_index); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, c_hss[0].satisfied_signals); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
| MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
| c_hss[0].satisfiable_signals); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE, |
| c_hss[1].satisfied_signals); |
| EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE | |
| MOJO_HANDLE_SIGNAL_PEER_CLOSED, |
| c_hss[1].satisfiable_signals); |
| |
| EXPECT_EQ(MOJO_RESULT_OK, WaitMany(handles, signals, 2, &result_index, hss)); |
| EXPECT_EQ(1u, result_index); |
| EXPECT_TRUE(!hss[0].readable() && hss[0].writable() && !hss[0].peer_closed()); |
| EXPECT_TRUE(!hss[0].never_readable() && !hss[0].never_writable() && |
| !hss[0].never_peer_closed()); |
| EXPECT_TRUE(hss[1].readable() && hss[1].writable() && !hss[1].peer_closed()); |
| EXPECT_TRUE(!hss[1].never_readable() && !hss[1].never_writable() && |
| !hss[1].never_peer_closed()); |
| |
| // Close the writer and read the message. Try to wait again, and it should |
| // fail due to the conditions being unsatisfiable. |
| |
| EXPECT_EQ(kTestMessage1, ReadMessage(p.handle1)); |
| p.handle0.reset(); |
| |
| // handles[0] is invalid. |
| EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, |
| WaitMany(handles, signals, 2, &result_index, hss)); |
| handles[0] = handles[1]; |
| EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
| WaitMany(handles, signals, 1, &result_index, hss)); |
| EXPECT_EQ(0u, result_index); |
| EXPECT_TRUE(!hss[0].readable() && !hss[0].writable() && hss[0].peer_closed()); |
| EXPECT_TRUE(hss[0].never_readable() && hss[0].never_writable() && |
| !hss[0].never_peer_closed()); |
| } |
| |
| TEST_F(WaitManyTest, CloseWhileWaiting) { |
| MessagePipe p, q; |
| |
| Handle handles[3] = {q.handle0.get(), q.handle1.get(), p.handle1.get()}; |
| MojoHandleSignals signals[3] = {MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE}; |
| |
| ThreadedRunner close_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| handle->reset(); |
| }, |
| &p.handle1)); |
| close_after_delay.Start(); |
| |
| size_t result_index = 0; |
| EXPECT_EQ(MOJO_RESULT_CANCELLED, |
| WaitMany(handles, signals, 3, &result_index)); |
| EXPECT_EQ(2u, result_index); |
| } |
| |
| TEST_F(WaitManyTest, DelayedWrite) { |
| MessagePipe p; |
| |
| ThreadedRunner write_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| // Wait a little while, then write a message. |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| WriteMessage(*handle, "wakey wakey"); |
| }, |
| &p.handle0)); |
| write_after_delay.Start(); |
| |
| Handle handles[2] = {p.handle0.get(), p.handle1.get()}; |
| MojoHandleSignals signals[2] = {MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE}; |
| size_t result_index = 0; |
| HandleSignalsState hss[2]; |
| EXPECT_EQ(MOJO_RESULT_OK, WaitMany(handles, signals, 2, &result_index, hss)); |
| EXPECT_EQ(1u, result_index); |
| EXPECT_TRUE(!hss[0].readable() && hss[0].writable() && !hss[0].peer_closed()); |
| EXPECT_TRUE(!hss[0].never_readable() && !hss[0].never_writable() && |
| !hss[0].never_peer_closed()); |
| EXPECT_TRUE(hss[1].readable() && hss[1].writable() && !hss[1].peer_closed()); |
| EXPECT_TRUE(!hss[1].never_readable() && !hss[1].never_writable() && |
| !hss[1].never_peer_closed()); |
| } |
| |
| TEST_F(WaitManyTest, DelayedPeerClosure) { |
| MessagePipe p, q; |
| |
| ThreadedRunner close_after_delay(base::Bind( |
| [](ScopedMessagePipeHandle* handle) { |
| // Wait a little while, then close the handle. |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200)); |
| handle->reset(); |
| }, |
| &p.handle0)); |
| close_after_delay.Start(); |
| |
| Handle handles[3] = {q.handle0.get(), q.handle1.get(), p.handle1.get()}; |
| MojoHandleSignals signals[3] = {MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE, |
| MOJO_HANDLE_SIGNAL_READABLE}; |
| size_t result_index = 0; |
| HandleSignalsState hss[3]; |
| EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, |
| WaitMany(handles, signals, 3, &result_index, hss)); |
| EXPECT_EQ(2u, result_index); |
| EXPECT_TRUE(!hss[2].readable() && !hss[2].writable() && hss[2].peer_closed()); |
| EXPECT_TRUE(hss[2].never_readable() && hss[2].never_writable() && |
| !hss[2].never_peer_closed()); |
| } |
| |
| } // namespace |
| } // namespace mojo |