Line data    Source code

       1             : 
       2             : /* Copyright (c) 2005-2014, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *
       4             :  * This file is part of Collage <https://github.com/Eyescale/Collage>
       5             :  *
       6             :  * This library is free software; you can redistribute it and/or modify it under
       7             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       8             :  * by the Free Software Foundation.
       9             :  *
      10             :  * This library is distributed in the hope that it will be useful, but WITHOUT
      11             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      12             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      13             :  * details.
      14             :  *
      15             :  * You should have received a copy of the GNU Lesser General Public License
      16             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      17             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      18             :  */
      19             : 
      20             : #ifndef CO_PIPE_CONNECTION_H
      21             : #define CO_PIPE_CONNECTION_H
      22             : 
      23             : #ifdef _WIN32
      24             : #  include <co/namedPipeConnection.h>
      25             : #else
      26             : #  include "fdConnection.h"
      27             : #endif
      28             : 
      29             : #include <lunchbox/monitor.h>
      30             : #include <lunchbox/thread.h>
      31             : 
      32             : namespace co
      33             : {
      34             :     class NamedPipeConnection;
      35             :     class PipeConnection;
      36             :     typedef lunchbox::RefPtr< PipeConnection > PipeConnectionPtr;
      37             :     typedef lunchbox::RefPtr< const PipeConnection > ConstPipeConnectionPtr;
      38             : 
      39             :     /**
      40             :      * An inter-thread, bi-directional connection using anonymous pipes.
      41             :      *
      42             :      * The pipe connection is implemented using anonymous pipes, and can
      43             :      * therefore only be used between related threads. It consist of a pair of
      44             :      * siblings representing the two endpoints.
      45             :      */
      46             :     class PipeConnection
      47             : #ifdef _WIN32
      48             :         : public Connection
      49             : #else
      50             :         : public FDConnection
      51             : #endif
      52             :     {
      53             :     public:
      54             :         /** Construct a new pipe connection. */
      55             :         CO_API PipeConnection();
      56             :         /** Destruct this pipe connection. */
      57             :         CO_API virtual ~PipeConnection();
      58             : 
      59             :         bool connect() override;
      60         113 :         void close() override { _close(); }
      61             : 
      62             : #ifdef _WIN32
      63             :         Notifier getNotifier() const override;
      64             : #endif
      65             : 
      66           0 :         void acceptNB() override { /* nop */ }
      67             : 
      68             :         /** @return the sibling of this pipe connection. */
      69             :         ConnectionPtr acceptSync() override;
      70             : 
      71             :         /** @return the sibling connection. */
      72          99 :         PipeConnectionPtr getSibling() { return _sibling; }
      73             : 
      74             :     protected:
      75             : #ifdef _WIN32
      76             :         void readNB( void* buffer, const uint64_t bytes ) override;
      77             :         int64_t readSync( void* buffer, const uint64_t bytes,
      78             :                                   const bool ignored ) override;
      79             :         int64_t write( const void* buffer,
      80             :                                const uint64_t bytes ) override;
      81             : #endif
      82             : 
      83             :     private:
      84             :         PipeConnectionPtr _sibling;
      85             :         lunchbox::Monitorb _connected;
      86             : 
      87             : #ifdef _WIN32
      88             :         NamedPipeConnectionPtr _namedPipe;
      89             : 
      90             :         LB_TS_VAR( _recvThread );
      91             : #endif
      92             : 
      93             :         bool _createPipes();
      94             :         void _close();
      95             :     };
      96             : }
      97             : 
      98             : #endif //CO_PIPE_CONNECTION_H