|  | // Copyright 2013 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 <stdint.h> | 
|  | #include <stdio.h> | 
|  | #include <string.h> | 
|  |  | 
|  | #include <string> | 
|  | #include <vector> | 
|  |  | 
|  | #include "base/bind.h" | 
|  | #include "base/files/file_path.h" | 
|  | #include "base/files/file_util.h" | 
|  | #include "base/files/scoped_file.h" | 
|  | #include "base/files/scoped_temp_dir.h" | 
|  | #include "base/location.h" | 
|  | #include "base/logging.h" | 
|  | #include "base/macros.h" | 
|  | #include "build/build_config.h"  // TODO(vtl): Remove this. | 
|  | #include "mojo/edk/embedder/platform_shared_buffer.h" | 
|  | #include "mojo/edk/embedder/scoped_platform_handle.h" | 
|  | #include "mojo/edk/system/channel.h" | 
|  | #include "mojo/edk/system/dispatcher.h" | 
|  | #include "mojo/edk/system/message_pipe.h" | 
|  | #include "mojo/edk/system/message_pipe_test_utils.h" | 
|  | #include "mojo/edk/system/platform_handle_dispatcher.h" | 
|  | #include "mojo/edk/system/raw_channel.h" | 
|  | #include "mojo/edk/system/shared_buffer_dispatcher.h" | 
|  | #include "mojo/edk/system/test_utils.h" | 
|  | #include "mojo/edk/test/test_utils.h" | 
|  | #include "testing/gtest/include/gtest/gtest.h" | 
|  |  | 
|  | namespace mojo { | 
|  | namespace system { | 
|  | namespace { | 
|  |  | 
|  | class MultiprocessMessagePipeTest | 
|  | : public test::MultiprocessMessagePipeTestBase {}; | 
|  |  | 
|  | // For each message received, sends a reply message with the same contents | 
|  | // repeated twice, until the other end is closed or it receives "quitquitquit" | 
|  | // (which it doesn't reply to). It'll return the number of messages received, | 
|  | // not including any "quitquitquit" message, modulo 100. | 
|  | MOJO_MULTIPROCESS_TEST_CHILD_MAIN(EchoEcho) { | 
|  | embedder::SimplePlatformSupport platform_support; | 
|  | test::ChannelThread channel_thread(&platform_support); | 
|  | embedder::ScopedPlatformHandle client_platform_handle = | 
|  | mojo::test::MultiprocessTestHelper::client_platform_handle.Pass(); | 
|  | CHECK(client_platform_handle.is_valid()); | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | channel_thread.Start(client_platform_handle.Pass(), ep); | 
|  |  | 
|  | const std::string quitquitquit("quitquitquit"); | 
|  | int rv = 0; | 
|  | for (;; rv = (rv + 1) % 100) { | 
|  | // Wait for our end of the message pipe to be readable. | 
|  | HandleSignalsState hss; | 
|  | MojoResult result = | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss); | 
|  | if (result != MOJO_RESULT_OK) { | 
|  | // It was closed, probably. | 
|  | CHECK_EQ(result, MOJO_RESULT_FAILED_PRECONDITION); | 
|  | CHECK_EQ(hss.satisfied_signals, MOJO_HANDLE_SIGNAL_PEER_CLOSED); | 
|  | CHECK_EQ(hss.satisfiable_signals, MOJO_HANDLE_SIGNAL_PEER_CLOSED); | 
|  | break; | 
|  | } else { | 
|  | CHECK((hss.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  | CHECK((hss.satisfiable_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  | } | 
|  |  | 
|  | std::string read_buffer(1000, '\0'); | 
|  | uint32_t read_buffer_size = static_cast<uint32_t>(read_buffer.size()); | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&read_buffer_size), nullptr, | 
|  | nullptr, MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | read_buffer.resize(read_buffer_size); | 
|  | VLOG(2) << "Child got: " << read_buffer; | 
|  |  | 
|  | if (read_buffer == quitquitquit) { | 
|  | VLOG(2) << "Child quitting."; | 
|  | break; | 
|  | } | 
|  |  | 
|  | std::string write_buffer = read_buffer + read_buffer; | 
|  | CHECK_EQ(mp->WriteMessage(0, UserPointer<const void>(write_buffer.data()), | 
|  | static_cast<uint32_t>(write_buffer.size()), | 
|  | nullptr, MOJO_WRITE_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | } | 
|  |  | 
|  | mp->Close(0); | 
|  | return rv; | 
|  | } | 
|  |  | 
|  | // Sends "hello" to child, and expects "hellohello" back. | 
|  | #if defined(OS_ANDROID) | 
|  | // Android multi-process tests are not executing the new process. This is flaky. | 
|  | #define MAYBE_Basic DISABLED_Basic | 
|  | #else | 
|  | #define MAYBE_Basic Basic | 
|  | #endif  // defined(OS_ANDROID) | 
|  | TEST_F(MultiprocessMessagePipeTest, MAYBE_Basic) { | 
|  | helper()->StartChild("EchoEcho"); | 
|  |  | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | Init(ep); | 
|  |  | 
|  | std::string hello("hello"); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(hello.data()), | 
|  | static_cast<uint32_t>(hello.size()), nullptr, | 
|  | MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  |  | 
|  | HandleSignalsState hss; | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | // The child may or may not have closed its end of the message pipe and died | 
|  | // (and we may or may not know it yet), so our end may or may not appear as | 
|  | // writable. | 
|  | EXPECT_TRUE((hss.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  | EXPECT_TRUE((hss.satisfiable_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  |  | 
|  | std::string read_buffer(1000, '\0'); | 
|  | uint32_t read_buffer_size = static_cast<uint32_t>(read_buffer.size()); | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&read_buffer_size), nullptr, nullptr, | 
|  | MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | read_buffer.resize(read_buffer_size); | 
|  | VLOG(2) << "Parent got: " << read_buffer; | 
|  | EXPECT_EQ(hello + hello, read_buffer); | 
|  |  | 
|  | mp->Close(0); | 
|  |  | 
|  | // We sent one message. | 
|  | EXPECT_EQ(1 % 100, helper()->WaitForChildShutdown()); | 
|  | } | 
|  |  | 
|  | // Sends a bunch of messages to the child. Expects them "repeated" back. Waits | 
|  | // for the child to close its end before quitting. | 
|  | #if defined(OS_ANDROID) | 
|  | // Android multi-process tests are not executing the new process. This is flaky. | 
|  | #define MAYBE_QueueMessages DISABLED_QueueMessages | 
|  | #else | 
|  | #define MAYBE_QueueMessages QueueMessages | 
|  | #endif  // defined(OS_ANDROID) | 
|  | TEST_F(MultiprocessMessagePipeTest, DISABLED_QueueMessages) { | 
|  | helper()->StartChild("EchoEcho"); | 
|  |  | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | Init(ep); | 
|  |  | 
|  | static const size_t kNumMessages = 1001; | 
|  | for (size_t i = 0; i < kNumMessages; i++) { | 
|  | std::string write_buffer(i, 'A' + (i % 26)); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(write_buffer.data()), | 
|  | static_cast<uint32_t>(write_buffer.size()), | 
|  | nullptr, MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  | } | 
|  |  | 
|  | const std::string quitquitquit("quitquitquit"); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(quitquitquit.data()), | 
|  | static_cast<uint32_t>(quitquitquit.size()), | 
|  | nullptr, MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  |  | 
|  | for (size_t i = 0; i < kNumMessages; i++) { | 
|  | HandleSignalsState hss; | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | // The child may or may not have closed its end of the message pipe and died | 
|  | // (and we may or may not know it yet), so our end may or may not appear as | 
|  | // writable. | 
|  | EXPECT_TRUE((hss.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  | EXPECT_TRUE((hss.satisfiable_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  |  | 
|  | std::string read_buffer(kNumMessages * 2, '\0'); | 
|  | uint32_t read_buffer_size = static_cast<uint32_t>(read_buffer.size()); | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&read_buffer_size), nullptr, | 
|  | nullptr, MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | read_buffer.resize(read_buffer_size); | 
|  |  | 
|  | EXPECT_EQ(std::string(i * 2, 'A' + (i % 26)), read_buffer); | 
|  | } | 
|  |  | 
|  | // Wait for it to become readable, which should fail (since we sent | 
|  | // "quitquitquit"). | 
|  | HandleSignalsState hss; | 
|  | EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals); | 
|  |  | 
|  | mp->Close(0); | 
|  |  | 
|  | EXPECT_EQ(static_cast<int>(kNumMessages % 100), | 
|  | helper()->WaitForChildShutdown()); | 
|  | } | 
|  |  | 
|  | MOJO_MULTIPROCESS_TEST_CHILD_MAIN(CheckSharedBuffer) { | 
|  | embedder::SimplePlatformSupport platform_support; | 
|  | test::ChannelThread channel_thread(&platform_support); | 
|  | embedder::ScopedPlatformHandle client_platform_handle = | 
|  | mojo::test::MultiprocessTestHelper::client_platform_handle.Pass(); | 
|  | CHECK(client_platform_handle.is_valid()); | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | channel_thread.Start(client_platform_handle.Pass(), ep); | 
|  |  | 
|  | // Wait for the first message from our parent. | 
|  | HandleSignalsState hss; | 
|  | CHECK_EQ(test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss), | 
|  | MOJO_RESULT_OK); | 
|  | // In this test, the parent definitely doesn't close its end of the message | 
|  | // pipe before we do. | 
|  | CHECK_EQ(hss.satisfied_signals, | 
|  | MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE); | 
|  | CHECK_EQ(hss.satisfiable_signals, MOJO_HANDLE_SIGNAL_READABLE | | 
|  | MOJO_HANDLE_SIGNAL_WRITABLE | | 
|  | MOJO_HANDLE_SIGNAL_PEER_CLOSED); | 
|  |  | 
|  | // It should have a shared buffer. | 
|  | std::string read_buffer(100, '\0'); | 
|  | uint32_t num_bytes = static_cast<uint32_t>(read_buffer.size()); | 
|  | DispatcherVector dispatchers; | 
|  | uint32_t num_dispatchers = 10;  // Maximum number to receive. | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&num_bytes), &dispatchers, | 
|  | &num_dispatchers, MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | read_buffer.resize(num_bytes); | 
|  | CHECK_EQ(read_buffer, std::string("go 1")); | 
|  | CHECK_EQ(num_dispatchers, 1u); | 
|  |  | 
|  | CHECK_EQ(dispatchers[0]->GetType(), Dispatcher::kTypeSharedBuffer); | 
|  |  | 
|  | scoped_refptr<SharedBufferDispatcher> dispatcher( | 
|  | static_cast<SharedBufferDispatcher*>(dispatchers[0].get())); | 
|  |  | 
|  | // Make a mapping. | 
|  | scoped_ptr<embedder::PlatformSharedBufferMapping> mapping; | 
|  | CHECK_EQ(dispatcher->MapBuffer(0, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping), | 
|  | MOJO_RESULT_OK); | 
|  | CHECK(mapping); | 
|  | CHECK(mapping->GetBase()); | 
|  | CHECK_EQ(mapping->GetLength(), 100u); | 
|  |  | 
|  | // Write some stuff to the shared buffer. | 
|  | static const char kHello[] = "hello"; | 
|  | memcpy(mapping->GetBase(), kHello, sizeof(kHello)); | 
|  |  | 
|  | // We should be able to close the dispatcher now. | 
|  | dispatcher->Close(); | 
|  |  | 
|  | // And send a message to signal that we've written stuff. | 
|  | const std::string go2("go 2"); | 
|  | CHECK_EQ(mp->WriteMessage(0, UserPointer<const void>(&go2[0]), | 
|  | static_cast<uint32_t>(go2.size()), nullptr, | 
|  | MOJO_WRITE_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  |  | 
|  | // Now wait for our parent to send us a message. | 
|  | hss = HandleSignalsState(); | 
|  | CHECK_EQ(test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss), | 
|  | MOJO_RESULT_OK); | 
|  | CHECK_EQ(hss.satisfied_signals, | 
|  | MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE); | 
|  | CHECK_EQ(hss.satisfiable_signals, MOJO_HANDLE_SIGNAL_READABLE | | 
|  | MOJO_HANDLE_SIGNAL_WRITABLE | | 
|  | MOJO_HANDLE_SIGNAL_PEER_CLOSED); | 
|  |  | 
|  | read_buffer = std::string(100, '\0'); | 
|  | num_bytes = static_cast<uint32_t>(read_buffer.size()); | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&num_bytes), nullptr, nullptr, | 
|  | MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | read_buffer.resize(num_bytes); | 
|  | CHECK_EQ(read_buffer, std::string("go 3")); | 
|  |  | 
|  | // It should have written something to the shared buffer. | 
|  | static const char kWorld[] = "world!!!"; | 
|  | CHECK_EQ(memcmp(mapping->GetBase(), kWorld, sizeof(kWorld)), 0); | 
|  |  | 
|  | // And we're done. | 
|  | mp->Close(0); | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | #if defined(OS_POSIX) && !defined(OS_ANDROID) | 
|  | #define MAYBE_SharedBufferPassing SharedBufferPassing | 
|  | #else | 
|  | // Not yet implemented (on Windows). | 
|  | // Android multi-process tests are not executing the new process. This is flaky. | 
|  | #define MAYBE_SharedBufferPassing DISABLED_SharedBufferPassing | 
|  | #endif | 
|  | TEST_F(MultiprocessMessagePipeTest, MAYBE_SharedBufferPassing) { | 
|  | helper()->StartChild("CheckSharedBuffer"); | 
|  |  | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | Init(ep); | 
|  |  | 
|  | // Make a shared buffer. | 
|  | scoped_refptr<SharedBufferDispatcher> dispatcher; | 
|  | EXPECT_EQ(MOJO_RESULT_OK, SharedBufferDispatcher::Create( | 
|  | platform_support(), | 
|  | SharedBufferDispatcher::kDefaultCreateOptions, | 
|  | 100, &dispatcher)); | 
|  | ASSERT_TRUE(dispatcher); | 
|  |  | 
|  | // Make a mapping. | 
|  | scoped_ptr<embedder::PlatformSharedBufferMapping> mapping; | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | dispatcher->MapBuffer(0, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping)); | 
|  | ASSERT_TRUE(mapping); | 
|  | ASSERT_TRUE(mapping->GetBase()); | 
|  | ASSERT_EQ(100u, mapping->GetLength()); | 
|  |  | 
|  | // Send the shared buffer. | 
|  | const std::string go1("go 1"); | 
|  | DispatcherTransport transport( | 
|  | test::DispatcherTryStartTransport(dispatcher.get())); | 
|  | ASSERT_TRUE(transport.is_valid()); | 
|  |  | 
|  | std::vector<DispatcherTransport> transports; | 
|  | transports.push_back(transport); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(&go1[0]), | 
|  | static_cast<uint32_t>(go1.size()), &transports, | 
|  | MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  | transport.End(); | 
|  |  | 
|  | EXPECT_TRUE(dispatcher->HasOneRef()); | 
|  | dispatcher = nullptr; | 
|  |  | 
|  | // Wait for a message from the child. | 
|  | HandleSignalsState hss; | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | EXPECT_TRUE((hss.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  | EXPECT_TRUE((hss.satisfiable_signals & MOJO_HANDLE_SIGNAL_READABLE)); | 
|  |  | 
|  | std::string read_buffer(100, '\0'); | 
|  | uint32_t num_bytes = static_cast<uint32_t>(read_buffer.size()); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&num_bytes), nullptr, nullptr, | 
|  | MOJO_READ_MESSAGE_FLAG_NONE)); | 
|  | read_buffer.resize(num_bytes); | 
|  | EXPECT_EQ(std::string("go 2"), read_buffer); | 
|  |  | 
|  | // After we get it, the child should have written something to the shared | 
|  | // buffer. | 
|  | static const char kHello[] = "hello"; | 
|  | EXPECT_EQ(0, memcmp(mapping->GetBase(), kHello, sizeof(kHello))); | 
|  |  | 
|  | // Now we'll write some stuff to the shared buffer. | 
|  | static const char kWorld[] = "world!!!"; | 
|  | memcpy(mapping->GetBase(), kWorld, sizeof(kWorld)); | 
|  |  | 
|  | // And send a message to signal that we've written stuff. | 
|  | const std::string go3("go 3"); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(&go3[0]), | 
|  | static_cast<uint32_t>(go3.size()), nullptr, | 
|  | MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  |  | 
|  | // Wait for |mp| to become readable, which should fail. | 
|  | hss = HandleSignalsState(); | 
|  | EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals); | 
|  |  | 
|  | mp->Close(0); | 
|  |  | 
|  | EXPECT_EQ(0, helper()->WaitForChildShutdown()); | 
|  | } | 
|  |  | 
|  | MOJO_MULTIPROCESS_TEST_CHILD_MAIN(CheckPlatformHandleFile) { | 
|  | embedder::SimplePlatformSupport platform_support; | 
|  | test::ChannelThread channel_thread(&platform_support); | 
|  | embedder::ScopedPlatformHandle client_platform_handle = | 
|  | mojo::test::MultiprocessTestHelper::client_platform_handle.Pass(); | 
|  | CHECK(client_platform_handle.is_valid()); | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | channel_thread.Start(client_platform_handle.Pass(), ep); | 
|  |  | 
|  | HandleSignalsState hss; | 
|  | CHECK_EQ(test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss), | 
|  | MOJO_RESULT_OK); | 
|  | CHECK_EQ(hss.satisfied_signals, | 
|  | MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE); | 
|  | CHECK_EQ(hss.satisfiable_signals, MOJO_HANDLE_SIGNAL_READABLE | | 
|  | MOJO_HANDLE_SIGNAL_WRITABLE | | 
|  | MOJO_HANDLE_SIGNAL_PEER_CLOSED); | 
|  |  | 
|  | std::string read_buffer(100, '\0'); | 
|  | uint32_t num_bytes = static_cast<uint32_t>(read_buffer.size()); | 
|  | DispatcherVector dispatchers; | 
|  | uint32_t num_dispatchers = 30;  // Maximum number to receive. | 
|  | CHECK_EQ(mp->ReadMessage(0, UserPointer<void>(&read_buffer[0]), | 
|  | MakeUserPointer(&num_bytes), &dispatchers, | 
|  | &num_dispatchers, MOJO_READ_MESSAGE_FLAG_NONE), | 
|  | MOJO_RESULT_OK); | 
|  | mp->Close(0); | 
|  |  | 
|  | read_buffer.resize(num_bytes); | 
|  | char hello[32]; | 
|  | int num_handles = 0; | 
|  | sscanf(read_buffer.c_str(), "%s %d", hello, &num_handles); | 
|  | CHECK_EQ(std::string("hello"), std::string(hello)); | 
|  | CHECK_GT(num_handles, 0); | 
|  |  | 
|  | for (int i = 0; i < num_handles; ++i) { | 
|  | CHECK_EQ(dispatchers[i]->GetType(), Dispatcher::kTypePlatformHandle); | 
|  |  | 
|  | scoped_refptr<PlatformHandleDispatcher> dispatcher( | 
|  | static_cast<PlatformHandleDispatcher*>(dispatchers[i].get())); | 
|  | embedder::ScopedPlatformHandle h = dispatcher->PassPlatformHandle().Pass(); | 
|  | CHECK(h.is_valid()); | 
|  | dispatcher->Close(); | 
|  |  | 
|  | base::ScopedFILE fp(mojo::test::FILEFromPlatformHandle(h.Pass(), "r")); | 
|  | CHECK(fp); | 
|  | std::string fread_buffer(100, '\0'); | 
|  | size_t bytes_read = | 
|  | fread(&fread_buffer[0], 1, fread_buffer.size(), fp.get()); | 
|  | fread_buffer.resize(bytes_read); | 
|  | CHECK_EQ(fread_buffer, "world"); | 
|  | } | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | class MultiprocessMessagePipeTestWithPipeCount | 
|  | : public test::MultiprocessMessagePipeTestBase, | 
|  | public testing::WithParamInterface<size_t> {}; | 
|  |  | 
|  | TEST_P(MultiprocessMessagePipeTestWithPipeCount, PlatformHandlePassing) { | 
|  | base::ScopedTempDir temp_dir; | 
|  | ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); | 
|  |  | 
|  | helper()->StartChild("CheckPlatformHandleFile"); | 
|  |  | 
|  | scoped_refptr<ChannelEndpoint> ep; | 
|  | scoped_refptr<MessagePipe> mp(MessagePipe::CreateLocalProxy(&ep)); | 
|  | Init(ep); | 
|  |  | 
|  | std::vector<scoped_refptr<PlatformHandleDispatcher>> dispatchers; | 
|  | std::vector<DispatcherTransport> transports; | 
|  |  | 
|  | size_t pipe_count = GetParam(); | 
|  | for (size_t i = 0; i < pipe_count; ++i) { | 
|  | base::FilePath unused; | 
|  | base::ScopedFILE fp( | 
|  | CreateAndOpenTemporaryFileInDir(temp_dir.path(), &unused)); | 
|  | const std::string world("world"); | 
|  | CHECK_EQ(fwrite(&world[0], 1, world.size(), fp.get()), world.size()); | 
|  | fflush(fp.get()); | 
|  | rewind(fp.get()); | 
|  |  | 
|  | scoped_refptr<PlatformHandleDispatcher> dispatcher( | 
|  | new PlatformHandleDispatcher(embedder::ScopedPlatformHandle( | 
|  | mojo::test::PlatformHandleFromFILE(fp.Pass())))); | 
|  | dispatchers.push_back(dispatcher); | 
|  | DispatcherTransport transport( | 
|  | test::DispatcherTryStartTransport(dispatcher.get())); | 
|  | ASSERT_TRUE(transport.is_valid()); | 
|  | transports.push_back(transport); | 
|  | } | 
|  |  | 
|  | char message[128]; | 
|  | sprintf(message, "hello %d", static_cast<int>(pipe_count)); | 
|  | EXPECT_EQ(MOJO_RESULT_OK, | 
|  | mp->WriteMessage(0, UserPointer<const void>(message), | 
|  | static_cast<uint32_t>(strlen(message)), | 
|  | &transports, MOJO_WRITE_MESSAGE_FLAG_NONE)); | 
|  |  | 
|  | for (size_t i = 0; i < pipe_count; ++i) { | 
|  | transports[i].End(); | 
|  | EXPECT_TRUE(dispatchers[i]->HasOneRef()); | 
|  | } | 
|  |  | 
|  | dispatchers.clear(); | 
|  |  | 
|  | // Wait for it to become readable, which should fail. | 
|  | HandleSignalsState hss; | 
|  | EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, | 
|  | test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss)); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals); | 
|  | EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals); | 
|  |  | 
|  | mp->Close(0); | 
|  |  | 
|  | EXPECT_EQ(0, helper()->WaitForChildShutdown()); | 
|  | } | 
|  |  | 
|  | // Not yet implemented (on Windows). | 
|  | // Android multi-process tests are not executing the new process. This is flaky. | 
|  | #if defined(OS_POSIX) && !defined(OS_ANDROID) | 
|  | INSTANTIATE_TEST_CASE_P(PipeCount, | 
|  | MultiprocessMessagePipeTestWithPipeCount, | 
|  | testing::Values(1u, 10u, 25u)); | 
|  | #endif | 
|  |  | 
|  | }  // namespace | 
|  | }  // namespace system | 
|  | }  // namespace mojo |