Jack2 1.9.6

JackWinNamedPipeNotifyChannel.cpp

00001 /*
00002  Copyright (C) 2004-2008 Grame
00003  
00004  This program is free software; you can redistribute it and/or modify
00005  it under the terms of the GNU Lesser General Public License as published by
00006  the Free Software Foundation; either version 2.1 of the License, or
00007  (at your option) any later version.
00008  
00009  This program is distributed in the hope that it will be useful,
00010  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  GNU Lesser General Public License for more details.
00013  
00014  You should have received a copy of the GNU Lesser General Public License
00015  along with this program; if not, write to the Free Software
00016  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  
00018  */
00019 
00020 
00021 #include "JackRequest.h"
00022 #include "JackWinNamedPipeNotifyChannel.h"
00023 #include "JackError.h"
00024 #include "JackConstants.h"
00025 
00026 namespace Jack
00027 {
00028 
00029 // Server to client
00030 int JackWinNamedPipeNotifyChannel::Open(const char* name)
00031 {
00032     jack_log("JackWinNamedPipeNotifyChannel::Open name = %s", name);
00033 
00034     // Connect to client listen pipe
00035     if (fNotifyPipe.Connect(jack_client_dir, name, 0) < 0) {
00036         jack_error("Cannot connect client pipe");
00037         return -1;
00038     }
00039     // TODO : use a time out for notifications
00040     fNotifyPipe.SetReadTimeOut(SOCKET_TIME_OUT);
00041     return 0;
00042 }
00043 
00044 void JackWinNamedPipeNotifyChannel::Close()
00045 {
00046     jack_log("JackWinNamedPipeNotifyChannel::Close");
00047     fNotifyPipe.Close();
00048 }
00049 
00050 void JackWinNamedPipeNotifyChannel::ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2, int* result)
00051 {
00052     JackClientNotification event(name, refnum, notify, sync, message, value1, value2);
00053     JackResult res;
00054 
00055     // Send notification
00056     if (event.Write(&fNotifyPipe) < 0) {
00057         jack_error("Could not write notification");
00058         fNotifyPipe.Close();
00059         *result = -1;
00060         return;
00061     }
00062 
00063     // Read the result in "synchronous" mode only
00064     if (sync) {
00065         // Get result : use a time out
00066         if (res.Read(&fNotifyPipe) < 0) {
00067             jack_error("Could not read result");
00068             fNotifyPipe.Close();
00069             *result = -1;
00070         } else {
00071             *result = res.fResult;
00072         }
00073     } else {
00074         *result = 0;
00075     }
00076 }
00077 
00078 } // end of namespace
00079 
00080