Socket/ReadWritePolicy.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   4 // Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
   5 // Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
   6 //     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief ReadPolicy and WritePolicy non-inline non-template implementation
  25  */
  26
  27 #include "ReadWritePolicy.hh"
  28 //#include "ReadWritePolicy.ih"
  29
  30 // Custom includes
  31 #include <sys/types.h>
  32 #include <sys/socket.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35
  36
  37 //#include "ReadWritePolicy.mpp"
  38 #define prefix_
  39 ///////////////////////////////cc.p////////////////////////////////////////
  40
  41 prefix_ unsigned senf::ReadablePolicy::read(FileHandle handle, char * buffer,
  42                                                    unsigned size)
  43 {
  44     int rv = -1;
  45     do {
  46         rv = ::read(handle.fd(), buffer, size);
  47         if (rv < 0)
  48             switch(errno) {
  49             case EINTR:
  50                 break;
  51             case EAGAIN:
  52                 // This means, the socket is non-blocking an no data was available
  53                 rv = 0;
  54                 break;
  55             default:
  56                 throw SystemException(errno);
  57             }
  58     } while (rv<0);
  59     return rv;
  60 }
  61
  62 prefix_ unsigned senf::ReadablePolicy::do_readfrom(FileHandle handle, char * buffer,
  63                                                           unsigned size,
  64                                                           struct ::sockaddr * addr, socklen_t len)
  65 {
  66     int rv = -1;
  67     do {
  68         rv = ::recvfrom(handle.fd(),buffer, size, 0, addr, &len);
  69         if (rv < 0)
  70             switch (errno) {
  71             case EINTR:
  72                 break;
  73             case EAGAIN:
  74                 rv = 0;
  75                 break;
  76             default:
  77                 throw SystemException(errno);
  78             }
  79     } while (rv<0);
  80     return rv;
  81 }
  82
  83 prefix_ unsigned senf::WriteablePolicy::do_write(FileHandle handle, char const * buffer,
  84                                                         unsigned size)
  85 {
  86     int rv = -1;
  87     do {
  88         rv = ::write(handle.fd(), buffer, size);
  89         if (rv < 0)
  90             switch (errno) {
  91             case EINTR:
  92                 break;
  93             case EAGAIN:
  94                 rv = 0;
  95                 break;
  96             default:
  97                 throw SystemException(errno);
  98             }
  99     } while (rv<0);
 100     return rv;
 101 }
 102
 103 prefix_ unsigned senf::WriteablePolicy::do_writeto(FileHandle handle,
 104                                                           char const * buffer, unsigned size,
 105                                                           struct sockaddr const * addr, socklen_t len)
 106 {
 107     int rv = -1;
 108     do {
 109         rv = ::sendto(handle.fd(), buffer, size, 0, addr, len);
 110         if (rv < 0)
 111             switch (errno) {
 112             case EINTR:
 113                 break;
 114             case EAGAIN:
 115                 rv = 0;
 116                 break;
 117             default:
 118                 throw SystemException(errno);
 119             }
 120     } while (rv<0);
 121     return rv;
 122 }
 123
 124 ///////////////////////////////cc.e////////////////////////////////////////
 125 #undef prefix_
 126 //#include "ReadWritePolicy.mpp"
 127
 128 \f
 129 // Local Variables:
 130 // mode: c++
 131 // fill-column: 100
 132 // c-file-style: "senf"
 133 // indent-tabs-mode: nil
 134 // ispell-local-dictionary: "american"
 135 // compile-command: "scons -u test"
 136 // comment-column: 40
 137 // End: