PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // MPIPStreamBuf.h 00004 // 00005 // Copyright (C) 2005 Pascal Vincent 00006 // 00007 // Redistribution and use in source and binary forms, with or without 00008 // modification, are permitted provided that the following conditions are met: 00009 // 00010 // 1. Redistributions of source code must retain the above copyright 00011 // notice, this list of conditions and the following disclaimer. 00012 // 00013 // 2. Redistributions in binary form must reproduce the above copyright 00014 // notice, this list of conditions and the following disclaimer in the 00015 // documentation and/or other materials provided with the distribution. 00016 // 00017 // 3. The name of the authors may not be used to endorse or promote 00018 // products derived from this software without specific prior written 00019 // permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 // 00032 // This file is part of the PLearn library. For more information on the PLearn 00033 // library, go to the PLearn Web site at www.plearn.org 00034 00035 /* ******************************************************* 00036 * $Id: MPIPStreamBuf.h $ 00037 ******************************************************* */ 00038 00039 // Authors: Pascal Vincent 00040 00044 #ifndef MPIPStreamBuf_INC 00045 #define MPIPStreamBuf_INC 00046 00047 #include "PStreamBuf.h" 00048 00049 namespace PLearn { 00050 00051 class Poll; 00052 00054 class MPIPStreamBuf: public PStreamBuf 00055 { 00056 friend class PLearn::Poll; 00057 00058 private: 00059 00060 typedef PStreamBuf inherited; 00061 char* mpibuf; 00062 streamsize mpibuf_capacity; 00063 char* mpibuf_p; 00064 streamsize mpibuf_len; 00065 bool reached_eof; 00066 streamsize max_chunksize; 00067 00068 void fill_mpibuf(int msglength); 00069 00070 protected: 00071 // ********************* 00072 // * protected options * 00073 // ********************* 00074 int peerrank; 00075 00076 00077 public: 00078 00079 MPIPStreamBuf(int peer_rank, streamsize chunksize=1024); 00080 virtual ~MPIPStreamBuf(); 00081 00082 protected: 00083 00084 virtual streamsize read_(char* p, streamsize n); 00085 00087 virtual void write_(const char* p, streamsize n); 00088 00089 }; 00090 00091 } // end of namespace PLearn 00092 00093 #endif 00094 00095 00096 /* 00097 Local Variables: 00098 mode:c++ 00099 c-basic-offset:4 00100 c-file-style:"stroustrup" 00101 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00102 indent-tabs-mode:nil 00103 fill-column:79 00104 End: 00105 */ 00106 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :