mojo/system/platform_handle_dispatcher.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 MOJO_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
   6 #define MOJO_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_
   7
   8 #include "base/macros.h"
   9 #include "mojo/embedder/scoped_platform_handle.h"
  10 #include "mojo/system/simple_dispatcher.h"
  11 #include "mojo/system/system_impl_export.h"
  12
  13 namespace mojo {
  14 namespace system {
  15
  16 // A dispatcher that simply wraps/transports a |PlatformHandle| (only for use by
  17 // the embedder).
  18 class MOJO_SYSTEM_IMPL_EXPORT PlatformHandleDispatcher
  19     : public SimpleDispatcher {
  20  public:
  21   explicit PlatformHandleDispatcher(
  22       embedder::ScopedPlatformHandle platform_handle);
  23
  24   embedder::ScopedPlatformHandle PassPlatformHandle();
  25
  26   // |Dispatcher| public methods:
  27   virtual Type GetType() const OVERRIDE;
  28
  29   // The "opposite" of |SerializeAndClose()|. (Typically this is called by
  30   // |Dispatcher::Deserialize()|.)
  31   static scoped_refptr<PlatformHandleDispatcher> Deserialize(
  32       Channel* channel,
  33       const void* source,
  34       size_t size,
  35       embedder::PlatformHandleVector* platform_handles);
  36
  37  private:
  38   virtual ~PlatformHandleDispatcher();
  39
  40   // |Dispatcher| protected methods:
  41   virtual void CloseImplNoLock() OVERRIDE;
  42   virtual scoped_refptr<Dispatcher>
  43       CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
  44   virtual void StartSerializeImplNoLock(Channel* channel,
  45                                         size_t* max_size,
  46                                         size_t* max_platform_handles) OVERRIDE;
  47   virtual bool EndSerializeAndCloseImplNoLock(
  48       Channel* channel,
  49       void* destination,
  50       size_t* actual_size,
  51       embedder::PlatformHandleVector* platform_handles) OVERRIDE;
  52
  53   // |SimpleDispatcher| methods:
  54   virtual MojoWaitFlags SatisfiedFlagsNoLock() const OVERRIDE;
  55   virtual MojoWaitFlags SatisfiableFlagsNoLock() const OVERRIDE;
  56
  57   embedder::ScopedPlatformHandle platform_handle_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(PlatformHandleDispatcher);
  60 };
  61
  62 }  // namespace system
  63 }  // namespace mojo
  64
  65 #endif  // MOJO_SYSTEM_PLATFORM_HANDLE_DISPATCHER_H_