Add CommandBroker::OnTransaction to handle incoming transactions

chromeos/binder/ipc_thread.cc

+// Copyright 2015 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 "chromeos/binder/ipc_thread.h"
+
+#include "chromeos/binder/command_broker.h"
+#include "chromeos/binder/driver.h"
+
+namespace binder {
+
+IpcThread::IpcThread()
+    : base::Thread("BinderThread"),
+      driver_(new Driver()),
+      watcher_(new base::MessageLoopForIO::FileDescriptorWatcher()) {}
+
+IpcThread::~IpcThread() {
+  Stop();
+}
+
+bool IpcThread::Start() {
+  DCHECK(!initialized_);
+  base::Thread::Options options;
+  options.message_loop_type = base::MessageLoop::TYPE_IO;
+  return StartWithOptions(options);
+}
+
+void IpcThread::OnFileCanReadWithoutBlocking(int fd) {
+  DCHECK(initialized_);
+  bool success = command_broker_->PollCommands();
+  LOG_IF(ERROR, !success) << "PollCommands() failed.";
+}
+
+void IpcThread::OnFileCanWriteWithoutBlocking(int fd) {
+  NOTREACHED();
+}
+
+void IpcThread::Init() {
+  DCHECK(!initialized_);
+  if (!driver_->Initialize()) {
+    LOG(ERROR) << "Failed to initialize driver.";
+    return;
+  }
+  command_broker_.reset(new CommandBroker(driver_.get()));
+  if (!command_broker_->EnterLooper()) {
+    LOG(ERROR) << "Failed to enter looper.";
+    return;
+  }
+  if (!base::MessageLoopForIO::current()->WatchFileDescriptor(
+          driver_->GetFD(), true, base::MessageLoopForIO::WATCH_READ,
+          watcher_.get(), this)) {
+    LOG(ERROR) << "Failed to initialize watcher.";
+    return;
+  }
+  initialized_ = true;
+}
+
+void IpcThread::CleanUp() {
+  DCHECK(initialized_);
+  if (!command_broker_->ExitLooper()) {
+    LOG(ERROR) << "Failed to exit looper.";
+  }
+  if (!driver_->NotifyCurrentThreadExiting()) {
+    LOG(ERROR) << "Failed to send thread exit.";
+  }
+  watcher_.reset();
+  command_broker_.reset();
+  driver_.reset();
+}
+
+}  // namespace binder