content/utility/utility_thread_impl.h

   1 // Copyright (c) 2012 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_UTILITY_UTILITY_THREAD_IMPL_H_
   6 #define CONTENT_UTILITY_UTILITY_THREAD_IMPL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "content/child/child_thread_impl.h"
  15 #include "content/common/content_export.h"
  16 #include "content/common/process_control.mojom.h"
  17 #include "content/public/utility/utility_thread.h"
  18 #include "mojo/common/weak_binding_set.h"
  19
  20 namespace base {
  21 class FilePath;
  22 }
  23
  24 namespace content {
  25 class BlinkPlatformImpl;
  26 class UtilityBlinkPlatformImpl;
  27 class UtilityProcessControlImpl;
  28
  29 #if defined(COMPILER_MSVC)
  30 // See explanation for other RenderViewHostImpl which is the same issue.
  31 #pragma warning(push)
  32 #pragma warning(disable: 4250)
  33 #endif
  34
  35 // This class represents the background thread where the utility task runs.
  36 class UtilityThreadImpl : public UtilityThread,
  37                           public ChildThreadImpl {
  38  public:
  39   UtilityThreadImpl();
  40   // Constructor that's used when running in single process mode.
  41   explicit UtilityThreadImpl(const InProcessChildThreadParams& params);
  42   ~UtilityThreadImpl() override;
  43   void Shutdown() override;
  44
  45   void ReleaseProcessIfNeeded() override;
  46   void EnsureBlinkInitialized() override;
  47
  48  private:
  49   void Init();
  50
  51   // ChildThread implementation.
  52   bool OnControlMessageReceived(const IPC::Message& msg) override;
  53
  54   // IPC message handlers.
  55   void OnBatchModeStarted();
  56   void OnBatchModeFinished();
  57
  58 #if defined(OS_POSIX) && defined(ENABLE_PLUGINS)
  59   void OnLoadPlugins(const std::vector<base::FilePath>& plugin_paths);
  60 #endif
  61
  62   void BindProcessControlRequest(
  63       mojo::InterfaceRequest<content::ProcessControl> request);
  64
  65   // True when we're running in batch mode.
  66   bool batch_mode_;
  67
  68   scoped_ptr<UtilityBlinkPlatformImpl> blink_platform_impl_;
  69
  70   // Process control for Mojo application hosting.
  71   scoped_ptr<UtilityProcessControlImpl> process_control_;
  72
  73   // Bindings to the ProcessControl impl.
  74   mojo::WeakBindingSet<ProcessControl> process_control_bindings_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(UtilityThreadImpl);
  77 };
  78
  79 #if defined(COMPILER_MSVC)
  80 #pragma warning(pop)
  81 #endif
  82
  83 }  // namespace content
  84
  85 #endif  // CONTENT_UTILITY_UTILITY_THREAD_IMPL_H_