native_client_sdk/src/libraries/nacl_io/pipe/pipe_event_emitter.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 LIBRARIES_NACL_IO_PIPE_PIPE_EVENT_EMITTER_H_
   6 #define LIBRARIES_NACL_IO_PIPE_PIPE_EVENT_EMITTER_H_
   7
   8 #include <poll.h>
   9 #include <stdint.h>
  10 #include <stdlib.h>
  11
  12 #include "nacl_io/fifo_char.h"
  13 #include "nacl_io/stream/stream_event_emitter.h"
  14
  15 #include "sdk_util/auto_lock.h"
  16 #include "sdk_util/macros.h"
  17
  18 namespace nacl_io {
  19
  20 class PipeEventEmitter;
  21 typedef sdk_util::ScopedRef<PipeEventEmitter> ScopedPipeEventEmitter;
  22
  23 class PipeEventEmitter : public StreamEventEmitter {
  24  public:
  25   explicit PipeEventEmitter(size_t size);
  26
  27   Error Read_Locked(char* data, size_t len, int* out_bytes);
  28   Error Write_Locked(const char* data, size_t len, int* out_bytes);
  29
  30  protected:
  31   virtual FIFOChar* in_fifo() { return &fifo_; }
  32   virtual FIFOChar* out_fifo() { return &fifo_; }
  33
  34  private:
  35   FIFOChar fifo_;
  36   DISALLOW_COPY_AND_ASSIGN(PipeEventEmitter);
  37 };
  38
  39 }  // namespace nacl_io
  40
  41 #endif  // LIBRARIES_NACL_IO_PIPE_PIPE_EVENT_EMITTER_H_