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mojo/shell/app_child_process_host.cc

+// Copyright 2014 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/shell/app_child_process_host.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/message_loop/message_loop.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "mojo/public/cpp/system/core.h"
+#include "mojo/shell/context.h"
+#include "mojo/shell/task_runners.h"
+
+namespace mojo {
+namespace shell {
+
+AppChildProcessHost::AppChildProcessHost(Context* context)
+    : ChildProcessHost(context), channel_info_(nullptr) {
+}
+
+AppChildProcessHost::~AppChildProcessHost() {
+}
+
+void AppChildProcessHost::StartApp(
+    const String& app_path,
+    bool clean_app_path,
+    InterfaceRequest<Application> application_request,
+    const AppChildController::StartAppCallback& on_app_complete) {
+  DCHECK(controller_);
+
+  on_app_complete_ = on_app_complete;
+  controller_->StartApp(
+      app_path, clean_app_path, application_request.Pass(),
+      base::Bind(&AppChildProcessHost::AppCompleted, base::Unretained(this)));
+}
+
+void AppChildProcessHost::ExitNow(int32_t exit_code) {
+  DCHECK(controller_);
+
+  controller_->ExitNow(exit_code);
+}
+
+void AppChildProcessHost::WillStart() {
+  DCHECK(platform_channel()->is_valid());
+
+  ScopedMessagePipeHandle handle(embedder::CreateChannel(
+      platform_channel()->Pass(), context()->task_runners()->io_runner(),
+      base::Bind(&AppChildProcessHost::DidCreateChannel,
+                 base::Unretained(this)),
+      base::MessageLoop::current()->message_loop_proxy()));
+
+  controller_.Bind(handle.Pass());
+}
+
+void AppChildProcessHost::DidStart(bool success) {
+  DVLOG(2) << "AppChildProcessHost::DidStart()";
+
+  if (!success) {
+    LOG(ERROR) << "Failed to start app child process";
+    AppCompleted(MOJO_RESULT_UNKNOWN);
+    return;
+  }
+}
+
+// Callback for |embedder::CreateChannel()|.
+void AppChildProcessHost::DidCreateChannel(
+    embedder::ChannelInfo* channel_info) {
+  DVLOG(2) << "AppChildProcessHost::DidCreateChannel()";
+
+  CHECK(channel_info);
+  channel_info_ = channel_info;
+}
+
+void AppChildProcessHost::AppCompleted(int32_t result) {
+  if (!on_app_complete_.is_null()) {
+    auto on_app_complete = on_app_complete_;
+    on_app_complete_.reset();
+    on_app_complete.Run(result);
+  }
+}
+
+}  // namespace shell
+}  // namespace mojo