Jack2 1.9.8
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00001 /* 00002 Copyright (C) 2001 Paul Davis 00003 Copyright (C) 2004-2008 Grame 00004 00005 This program is free software; you can redistribute it and/or modify 00006 it under the terms of the GNU General Public License as published by 00007 the Free Software Foundation; either version 2 of the License, or 00008 (at your option) any later version. 00009 00010 This program is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 GNU General Public License for more details. 00014 00015 You should have received a copy of the GNU General Public License 00016 along with this program; if not, write to the Free Software 00017 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 00019 */ 00020 00021 #include "JackSystemDeps.h" 00022 #include "JackFreewheelDriver.h" 00023 #include "JackEngineControl.h" 00024 #include "JackLockedEngine.h" 00025 00026 namespace Jack 00027 { 00028 00029 // When used in "master" mode 00030 00031 int JackFreewheelDriver::Process() 00032 { 00033 int res = 0; 00034 00035 jack_log("JackFreewheelDriver::Process master %lld", fEngineControl->fTimeOutUsecs); 00036 JackDriver::CycleTakeBeginTime(); 00037 00038 if (fEngine->Process(fBeginDateUst, fEndDateUst)) { 00039 00040 if (ResumeRefNum()) { // Signal all clients 00041 jack_error("JackFreewheelDriver::Process: ResumeRefNum error"); 00042 res = -1; 00043 } 00044 00045 // Special "SuspendRefNum" with longer timeout 00046 if (SuspendRefNum() < 0) { // Wait for all clients to finish for 10 sec 00047 jack_error("JackFreewheelDriver::ProcessSync: SuspendRefNum error"); 00048 /* We have a client time-out error, but still continue to process, until a better recovery strategy is chosen */ 00049 return 0; 00050 } 00051 00052 } else { // Graph not finished: do not activate it 00053 jack_error("JackFreewheelDriver::Process: Process error"); 00054 res = -1; 00055 } 00056 00057 return res; 00058 } 00059 00060 // When used in "slave" mode 00061 00062 int JackFreewheelDriver::ProcessReadSync() 00063 { 00064 if (ResumeRefNum() < 0) { // Signal all clients 00065 jack_error("JackFreewheelDriver::ProcessReadSync: ResumeRefNum error"); 00066 return -1; 00067 } 00068 return 0; 00069 } 00070 00071 int JackFreewheelDriver::ProcessWriteSync() 00072 { 00073 // Generic "SuspendRefNum" here 00074 if (JackDriver::SuspendRefNum() < 0) { 00075 jack_error("JackFreewheelDriver::ProcessSync SuspendRefNum error"); 00076 return -1; 00077 } 00078 return 0; 00079 } 00080 00081 int JackFreewheelDriver::ProcessReadAsync() 00082 { 00083 if (ResumeRefNum() < 0) { // Signal all clients 00084 jack_error("JackFreewheelDriver::ProcessReadAsync: ResumeRefNum error"); 00085 return -1; 00086 } 00087 return 0; 00088 } 00089 00090 int JackFreewheelDriver::ProcessWriteAsync() 00091 { 00092 return 0; 00093 } 00094 00095 int JackFreewheelDriver::SuspendRefNum() 00096 { 00097 return fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, FREEWHEEL_DRIVER_TIMEOUT * 1000000); 00098 } 00099 00100 } // end of namespace