content/browser/mojo/mojo_application_host.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_
   6 #define CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/process/process_handle.h"
  10 #include "content/common/application_setup.mojom.h"
  11 #include "content/common/mojo/channel_init.h"
  12 #include "content/common/mojo/service_registry_impl.h"
  13 #include "third_party/mojo/src/mojo/edk/embedder/scoped_platform_handle.h"
  14
  15 #if defined(OS_ANDROID)
  16 #include "content/browser/mojo/service_registry_android.h"
  17 #endif
  18
  19 namespace IPC {
  20 class Sender;
  21 }
  22
  23 namespace content {
  24
  25 // MojoApplicationHost represents the code needed on the browser side to setup
  26 // a child process as a Mojo application via Chrome IPC. The child process
  27 // should use MojoApplication to handle messages generated by an instance of
  28 // MojoApplicationHost. MojoApplicationHost makes the ServiceRegistry interface
  29 // available so that child-provided services can be invoked.
  30 class CONTENT_EXPORT MojoApplicationHost {
  31  public:
  32   MojoApplicationHost();
  33   ~MojoApplicationHost();
  34
  35   // Two-phase initialization:
  36   //  1- Init makes service_registry() available synchronously.
  37   //  2- Activate establishes the actual connection to the peer process.
  38   bool Init();
  39   void Activate(IPC::Sender* sender, base::ProcessHandle process_handle);
  40
  41   void WillDestroySoon();
  42
  43   // Shuts down the Mojo channel. Must be called from the IO thread.
  44   void ShutdownOnIOThread();
  45
  46   ServiceRegistry* service_registry() { return &service_registry_; }
  47
  48 #if defined(OS_ANDROID)
  49   ServiceRegistryAndroid* service_registry_android() {
  50     return service_registry_android_.get();
  51   }
  52 #endif
  53
  54   void OverrideIOTaskRunnerForTest(
  55       scoped_refptr<base::TaskRunner> io_task_runner);
  56
  57  private:
  58   ChannelInit channel_init_;
  59   mojo::embedder::ScopedPlatformHandle client_handle_;
  60
  61   bool did_activate_;
  62
  63   scoped_ptr<ApplicationSetup> application_setup_;
  64   ServiceRegistryImpl service_registry_;
  65
  66   scoped_refptr<base::TaskRunner> io_task_runner_override_;
  67
  68 #if defined(OS_ANDROID)
  69   scoped_ptr<ServiceRegistryAndroid> service_registry_android_;
  70 #endif
  71
  72   DISALLOW_COPY_AND_ASSIGN(MojoApplicationHost);
  73 };
  74
  75 }  // namespace content
  76
  77 #endif  // CONTENT_BROWSER_MOJO_MOJO_APPLICATION_HOST_H_