Add multiplexing of message pipes in the new EDK.

mojo/edk/system/multiprocess_message_pipe_unittest.cc

 // 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/test/test_io_thread.h"
-#include "build/build_config.h"  // TODO(vtl): Remove this.
+#include "build/build_config.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "mojo/edk/embedder/platform_shared_buffer.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/system/dispatcher.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 edk {
 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) {
-  SimplePlatformSupport platform_support;
-  base::MessageLoop message_loop;
-  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
-  test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
-
   ScopedPlatformHandle client_platform_handle =
       test::MultiprocessTestHelper::client_platform_handle.Pass();
   CHECK(client_platform_handle.is_valid());
   ScopedMessagePipeHandle mp =
       CreateMessagePipe(client_platform_handle.Pass());
 
   const std::string quitquitquit("quitquitquit");
   int rv = 0;
   for (;; rv = (rv + 1) % 100) {
     // Wait for our end of the message pipe to be readable.
@@ skipping 139 matching lines @@
             MojoWait(mp.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
                      MOJO_DEADLINE_INDEFINITE, &hss));
   ASSERT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
   ASSERT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
 
   ASSERT_EQ(static_cast<int>(kNumMessages % 100),
             helper()->WaitForChildShutdown());
 }
 
 MOJO_MULTIPROCESS_TEST_CHILD_MAIN(CheckSharedBuffer) {
-  SimplePlatformSupport platform_support;
-  base::MessageLoop message_loop;
-  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
-  test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
-
   ScopedPlatformHandle client_platform_handle =
       test::MultiprocessTestHelper::client_platform_handle.Pass();
   CHECK(client_platform_handle.is_valid());
   ScopedMessagePipeHandle mp =
       CreateMessagePipe(client_platform_handle.Pass());
 
   // Wait for the first message from our parent.
   HandleSignalsState hss;
   CHECK_EQ(MojoWait(mp.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
                MOJO_DEADLINE_INDEFINITE, &hss),
@@ skipping 149 matching lines @@
                      MOJO_DEADLINE_INDEFINITE, &hss));
   ASSERT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
   ASSERT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
 
   MojoClose(mp.release().value());
 
   ASSERT_EQ(0, helper()->WaitForChildShutdown());
 }
 
 MOJO_MULTIPROCESS_TEST_CHILD_MAIN(CheckPlatformHandleFile) {
-  SimplePlatformSupport platform_support;
-  base::MessageLoop message_loop;
-  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
-  test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
-
   ScopedPlatformHandle client_platform_handle =
       test::MultiprocessTestHelper::client_platform_handle.Pass();
   CHECK(client_platform_handle.is_valid());
   ScopedMessagePipeHandle mp =
       CreateMessagePipe(client_platform_handle.Pass());
 
   HandleSignalsState hss;
   CHECK_EQ(MojoWait(mp.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
                MOJO_DEADLINE_INDEFINITE, &hss),
            MOJO_RESULT_OK);
@@ skipping 94 matching lines @@
 }
 
 // Android multi-process tests are not executing the new process. This is flaky.
 #if !defined(OS_ANDROID)
 INSTANTIATE_TEST_CASE_P(PipeCount,
                         MultiprocessMessagePipeTestWithPipeCount,
                         testing::Values(1u, 128u, 140u));
 #endif
 
 MOJO_MULTIPROCESS_TEST_CHILD_MAIN(CheckMessagePipe) {
-  SimplePlatformSupport platform_support;
-  base::MessageLoop message_loop;
-  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
-  test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
-
   ScopedPlatformHandle client_platform_handle =
       test::MultiprocessTestHelper::client_platform_handle.Pass();
   CHECK(client_platform_handle.is_valid());
 
   ScopedMessagePipeHandle mp =
       CreateMessagePipe(client_platform_handle.Pass());
 
   // Wait for the first message from our parent.
   HandleSignalsState hss;
   CHECK_EQ(MojoWait(mp.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
@@ skipping 140 matching lines @@
            MOJO_RESULT_OK);
   read_buffer.resize(read_buffer_size);
   CHECK_EQ(read_buffer, std::string("world"));
 
   MojoClose(mp.release().value());
 
   ASSERT_EQ(0, helper()->WaitForChildShutdown());
 }
 
 MOJO_MULTIPROCESS_TEST_CHILD_MAIN(DataPipeConsumer) {
-  SimplePlatformSupport platform_support;
-  base::MessageLoop message_loop;
-  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
-  test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
-
   ScopedPlatformHandle client_platform_handle =
       test::MultiprocessTestHelper::client_platform_handle.Pass();
   CHECK(client_platform_handle.is_valid());
 
   ScopedMessagePipeHandle mp =
       CreateMessagePipe(client_platform_handle.Pass());
 
   // Wait for the first message from our parent.
   HandleSignalsState hss;
   CHECK_EQ(MojoWait(mp.get().value(), MOJO_HANDLE_SIGNAL_READABLE,
@@ skipping 93 matching lines @@
 
   MojoClose(mp1);
   MojoClose(mp.release().value());
 
   ASSERT_EQ(0, helper()->WaitForChildShutdown());
 }
 
 }  // namespace
 }  // namespace edk
 }  // namespace mojo