discardable_memory: Using mojo IPC to replace Chrome IPC

content/child/child_thread_impl.cc

 // Copyright (c) 2012 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 "content/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 14 matching lines @@
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_local.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/timer/elapsed_timer.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
-#include "components/discardable_memory/client/client_discardable_shared_memory_manager.h"
 #include "components/tracing/child/child_trace_message_filter.h"
 #include "content/child/child_histogram_message_filter.h"
 #include "content/child/child_process.h"
 #include "content/child/child_resource_message_filter.h"
 #include "content/child/child_shared_bitmap_manager.h"
 #include "content/child/fileapi/file_system_dispatcher.h"
 #include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/memory/child_memory_message_filter.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/push_messaging/push_dispatcher.h"
@@ skipping 265 matching lines @@
 }
 
 ChildThreadImpl::Options::Builder&
 ChildThreadImpl::Options::Builder::AutoStartServiceManagerConnection(
     bool auto_start) {
   options_.auto_start_service_manager_connection = auto_start;
   return *this;
 }
 
 ChildThreadImpl::Options::Builder&
-ChildThreadImpl::Options::Builder::ConnectToBrowser(
-  bool connect_to_browser) {
+ChildThreadImpl::Options::Builder::ConnectToBrowser(bool connect_to_browser) {
   options_.connect_to_browser = connect_to_browser;
   return *this;
 }
 
 ChildThreadImpl::Options::Builder&
 ChildThreadImpl::Options::Builder::AddStartupFilter(
     IPC::MessageFilter* filter) {
   options_.startup_filters.push_back(filter);
   return *this;
 }
@@ skipping 16 matching lines @@
 #if defined(OS_ANDROID)
   if (!handled && msg.is_sync()) {
     IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
     reply->set_reply_error();
     Send(reply);
   }
 #endif
   return handled;
 }
 
-class ChildThreadImpl::ClientDiscardableSharedMemoryManagerDelegate
-    : public discardable_memory::ClientDiscardableSharedMemoryManager::
-          Delegate {
- public:
-  explicit ClientDiscardableSharedMemoryManagerDelegate(
-      scoped_refptr<ThreadSafeSender> sender)
-      : sender_(sender) {}
-  ~ClientDiscardableSharedMemoryManagerDelegate() override {}
-
-  void AllocateLockedDiscardableSharedMemory(
-      size_t size,
-      discardable_memory::DiscardableSharedMemoryId id,
-      base::SharedMemoryHandle* handle) override {
-    sender_->Send(
-        new ChildProcessHostMsg_SyncAllocateLockedDiscardableSharedMemory(
-            size, id, handle));
-  }
-
-  void DeletedDiscardableSharedMemory(
-      discardable_memory::DiscardableSharedMemoryId id) override {
-    sender_->Send(new ChildProcessHostMsg_DeletedDiscardableSharedMemory(id));
-  }
-
- private:
-  scoped_refptr<ThreadSafeSender> sender_;
-};
-
 ChildThreadImpl::ChildThreadImpl()
     : route_provider_binding_(this),
       associated_interface_provider_bindings_(
           mojo::BindingSetDispatchMode::WITH_CONTEXT),
       router_(this),
       channel_connected_factory_(
           new base::WeakPtrFactory<ChildThreadImpl>(this)),
       weak_factory_(this) {
   Init(Options::Builder().Build());
 }
 
 ChildThreadImpl::ChildThreadImpl(const Options& options)
     : route_provider_binding_(this),
       associated_interface_provider_bindings_(
           mojo::BindingSetDispatchMode::WITH_CONTEXT),
       router_(this),
       browser_process_io_runner_(options.browser_process_io_runner),
       channel_connected_factory_(
           new base::WeakPtrFactory<ChildThreadImpl>(this)),
       weak_factory_(this) {
   Init(options);
 }
 
-scoped_refptr<base::SequencedTaskRunner> ChildThreadImpl::GetIOTaskRunner() {
+scoped_refptr<base::SingleThreadTaskRunner> ChildThreadImpl::GetIOTaskRunner() {
   if (IsInBrowserProcess())
     return browser_process_io_runner_;
   return ChildProcess::current()->io_task_runner();
 }
 
 void ChildThreadImpl::ConnectChannel() {
   std::string channel_token;
   mojo::ScopedMessagePipeHandle handle;
   if (!IsInBrowserProcess()) {
     channel_token = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
@@ skipping 166 matching lines @@
       FROM_HERE, base::Bind(&ChildThreadImpl::EnsureConnected,
                             channel_connected_factory_->GetWeakPtr()),
       base::TimeDelta::FromSeconds(connection_timeout));
 
 #if defined(OS_ANDROID)
   g_quit_closure.Get().BindToMainThread();
 #endif
 
   shared_bitmap_manager_.reset(
       new ChildSharedBitmapManager(thread_safe_sender()));
-
-  client_discardable_shared_memory_manager_delegate_ =
-      base::MakeUnique<ClientDiscardableSharedMemoryManagerDelegate>(
-          thread_safe_sender());
-  discardable_shared_memory_manager_ = base::MakeUnique<
-      discardable_memory::ClientDiscardableSharedMemoryManager>(
-      client_discardable_shared_memory_manager_delegate_.get());
 }
 
 ChildThreadImpl::~ChildThreadImpl() {
 #ifdef IPC_MESSAGE_LOG_ENABLED
   IPC::Logging::GetInstance()->SetIPCSender(NULL);
 #endif
 
   channel_->RemoveFilter(histogram_message_filter_.get());
   channel_->RemoveFilter(sync_message_filter_.get());
 
@@ skipping 10 matching lines @@
 }
 
 void ChildThreadImpl::Shutdown() {
   // Delete objects that hold references to blink so derived classes can
   // safely shutdown blink in their Shutdown implementation.
   file_system_dispatcher_.reset();
   quota_dispatcher_.reset();
   WebFileSystemImpl::DeleteThreadSpecificInstance();
 }
 
-void ChildThreadImpl::ShutdownDiscardableSharedMemoryManager() {
-  discardable_shared_memory_manager_.reset();
-}
-
 void ChildThreadImpl::OnChannelConnected(int32_t peer_pid) {
   channel_connected_factory_.reset();
 }
 
 void ChildThreadImpl::OnChannelError() {
   on_channel_error_called_ = true;
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
 bool ChildThreadImpl::Send(IPC::Message* msg) {
@@ skipping 269 matching lines @@
   connected_to_browser_ = true;
   child_info_ = local_info;
   browser_info_ = remote_info;
 }
 
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content