posix/JackSocketClientChannel.cpp

   1 /*
   2 Copyright (C) 2004-2008 Grame
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU Lesser General Public License as published by
   6 the Free Software Foundation; either version 2.1 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU Lesser General Public License for more details.
  13
  14 You should have received a copy of the GNU Lesser General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 */
  19
  20 #include "JackSocketClientChannel.h"
  21 #include "JackRequest.h"
  22 #include "JackClient.h"
  23 #include "JackGlobals.h"
  24 #include "JackError.h"
  25
  26 namespace Jack
  27 {
  28
  29 JackSocketClientChannel::JackSocketClientChannel()
  30     :JackGenericClientChannel(), fThread(this)
  31 {
  32     fRequest = new JackClientSocket();
  33     fNotificationSocket = NULL;
  34 }
  35
  36 JackSocketClientChannel::~JackSocketClientChannel()
  37 {
  38     delete fRequest;
  39     delete fNotificationSocket;
  40 }
  41
  42 int JackSocketClientChannel::Open(const char* server_name, const char* name, int uuid, char* name_res, JackClient* obj, jack_options_t options, jack_status_t* status)
  43 {
  44     int result = 0;
  45     jack_log("JackSocketClientChannel::Open name = %s", name);
  46
  47     if (fRequest->Connect(jack_server_dir, server_name, 0) < 0) {
  48         jack_error("Cannot connect to server socket");
  49         goto error;
  50     }
  51
  52     // Check name in server
  53     ClientCheck(name, uuid, name_res, JACK_PROTOCOL_VERSION, (int)options, (int*)status, &result, true);
  54     if (result < 0) {
  55         int status1 = *status;
  56         if (status1 & JackVersionError) {
  57             jack_error("JACK protocol mismatch %d", JACK_PROTOCOL_VERSION);
  58         } else {
  59             jack_error("Client name = %s conflits with another running client", name);
  60         }
  61         goto error;
  62     }
  63
  64     if (fNotificationListenSocket.Bind(jack_client_dir, name_res, 0) < 0) {
  65         jack_error("Cannot bind socket");
  66         goto error;
  67     }
  68
  69     fClient = obj;
  70     return 0;
  71
  72 error:
  73     fRequest->Close();
  74     fNotificationListenSocket.Close();
  75     return -1;
  76 }
  77
  78 void JackSocketClientChannel::Close()
  79 {
  80     fRequest->Close();
  81     fNotificationListenSocket.Close();
  82     if (fNotificationSocket)
  83         fNotificationSocket->Close();
  84 }
  85
  86 int JackSocketClientChannel::Start()
  87 {
  88     jack_log("JackSocketClientChannel::Start");
  89     /*
  90      To be sure notification thread is started before ClientOpen is called.
  91     */
  92     if (fThread.StartSync() != 0) {
  93         jack_error("Cannot start Jack client listener");
  94         return -1;
  95     } else {
  96         return 0;
  97     }
  98 }
  99
 100 void JackSocketClientChannel::Stop()
 101 {
 102     jack_log("JackSocketClientChannel::Stop");
 103     fThread.Kill();
 104 }
 105
 106 bool JackSocketClientChannel::Init()
 107 {
 108     jack_log("JackSocketClientChannel::Init");
 109     fNotificationSocket = fNotificationListenSocket.Accept();
 110
 111     // No more needed
 112     fNotificationListenSocket.Close();
 113
 114     // Setup context
 115     if (!jack_tls_set(JackGlobals::fNotificationThread, this)) {
 116         jack_error("Failed to set thread notification key");
 117     }
 118
 119     if (!fNotificationSocket) {
 120         jack_error("JackSocketClientChannel: cannot establish notication socket");
 121         return false;
 122     } else {
 123         return true;
 124     }
 125 }
 126
 127 bool JackSocketClientChannel::Execute()
 128 {
 129     JackClientNotification event;
 130     JackResult res;
 131
 132     if (event.Read(fNotificationSocket) < 0) {
 133         jack_error("JackSocketClientChannel read fail");
 134         goto error;
 135     }
 136
 137     res.fResult = fClient->ClientNotify(event.fRefNum, event.fName, event.fNotify, event.fSync, event.fMessage, event.fValue1, event.fValue2);
 138
 139     if (event.fSync) {
 140         if (res.Write(fNotificationSocket) < 0) {
 141             jack_error("JackSocketClientChannel write fail");
 142             goto error;
 143         }
 144     }
 145     return true;
 146
 147 error:
 148     fNotificationSocket->Close();
 149     fClient->ShutDown();
 150     return false;
 151 }
 152
 153 } // end of namespace
 154
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 156
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 158