src/mojo/system/local_message_pipe_endpoint.h

   1 // Copyright 2013 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_LOCAL_MESSAGE_PIPE_ENDPOINT_H_
   6 #define MOJO_SYSTEM_LOCAL_MESSAGE_PIPE_ENDPOINT_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/macros.h"
  10 #include "mojo/system/handle_signals_state.h"
  11 #include "mojo/system/message_in_transit_queue.h"
  12 #include "mojo/system/message_pipe_endpoint.h"
  13 #include "mojo/system/system_impl_export.h"
  14 #include "mojo/system/waiter_list.h"
  15
  16 namespace mojo {
  17 namespace system {
  18
  19 class MOJO_SYSTEM_IMPL_EXPORT LocalMessagePipeEndpoint
  20     : public MessagePipeEndpoint {
  21  public:
  22   LocalMessagePipeEndpoint();
  23   virtual ~LocalMessagePipeEndpoint();
  24
  25   // |MessagePipeEndpoint| implementation:
  26   virtual Type GetType() const OVERRIDE;
  27   virtual bool OnPeerClose() OVERRIDE;
  28   virtual void EnqueueMessage(scoped_ptr<MessageInTransit> message) OVERRIDE;
  29
  30   // There's a dispatcher for |LocalMessagePipeEndpoint|s, so we have to
  31   // implement/override these:
  32   virtual void Close() OVERRIDE;
  33   virtual void CancelAllWaiters() OVERRIDE;
  34   virtual MojoResult ReadMessage(UserPointer<void> bytes,
  35                                  UserPointer<uint32_t> num_bytes,
  36                                  DispatcherVector* dispatchers,
  37                                  uint32_t* num_dispatchers,
  38                                  MojoReadMessageFlags flags) OVERRIDE;
  39   virtual HandleSignalsState GetHandleSignalsState() const OVERRIDE;
  40   virtual MojoResult AddWaiter(Waiter* waiter,
  41                                MojoHandleSignals signals,
  42                                uint32_t context,
  43                                HandleSignalsState* signals_state) OVERRIDE;
  44   virtual void RemoveWaiter(Waiter* waiter,
  45                             HandleSignalsState* signals_state) OVERRIDE;
  46
  47   // This is only to be used by |MessagePipe|:
  48   MessageInTransitQueue* message_queue() { return &message_queue_; }
  49
  50  private:
  51   bool is_open_;
  52   bool is_peer_open_;
  53
  54   // Queue of incoming messages.
  55   MessageInTransitQueue message_queue_;
  56   WaiterList waiter_list_;
  57
  58   DISALLOW_COPY_AND_ASSIGN(LocalMessagePipeEndpoint);
  59 };
  60
  61 }  // namespace system
  62 }  // namespace mojo
  63
  64 #endif  // MOJO_SYSTEM_LOCAL_MESSAGE_PIPE_ENDPOINT_H_