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