tools/android/forwarder2/pipe_notifier.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 TOOLS_ANDROID_FORWARDER2_PIPE_NOTIFIER_H_
   6 #define TOOLS_ANDROID_FORWARDER2_PIPE_NOTIFIER_H_
   7
   8 #include "base/basictypes.h"
   9
  10 namespace forwarder2 {
  11
  12 // Helper class used to create a unix pipe that sends notifications to the
  13 // |receiver_fd_| file descriptor when called |Notify()|.  This should be used
  14 // by the main thread to notify other threads that it must exit.
  15 // The |receiver_fd_| can be put into a fd_set and used in a select together
  16 // with a socket waiting to accept or read.
  17 class PipeNotifier {
  18  public:
  19   PipeNotifier();
  20   ~PipeNotifier();
  21
  22   bool Notify();
  23
  24   int receiver_fd() const { return receiver_fd_; }
  25
  26   void Reset();
  27
  28  private:
  29   int sender_fd_;
  30   int receiver_fd_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(PipeNotifier);
  33 };
  34
  35 }  // namespace forwarder
  36
  37 #endif  // TOOLS_ANDROID_FORWARDER2_PIPE_NOTIFIER_H_