From 2d622fd9bcb8da9dd3f3206e296cd6a701fc9d12 Mon Sep 17 00:00:00 2001 From: vovanec Date: Sat, 23 Jun 2007 16:48:01 +0000 Subject: moved into qmmp dir git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@12 90c681e8-e032-0410-971d-27865f9a5e38 --- src/guard.cpp | 125 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 src/guard.cpp (limited to 'src/guard.cpp') diff --git a/src/guard.cpp b/src/guard.cpp new file mode 100644 index 000000000..d9c701951 --- /dev/null +++ b/src/guard.cpp @@ -0,0 +1,125 @@ +/*************************************************************************** + * Copyright (C) 2006 by Ilya Kotov * + * forkotov02@hotmail.ru * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#include "guard.h" + +//#define USE_SEMAPHORE + +#ifdef USE_SEMAPHORE + #include + #include + #include + #include +#else + #include +#endif + +#include + +bool Guard::create(const QString& filepath) +{ +#ifdef USE_SEMAPHORE + key_t key; + int sem_num = 1; + if( (key = ftok(filepath.toAscii().data(),'A')) < 0) + { + qWarning("Warning: Unable get access to key..."); + return false; + } + + if(semget(key,sem_num,IPC_CREAT | IPC_EXCL ) < 0) + { + if(errno == EEXIST) + { + qWarning("Warning: Semaphore with %d key already exists...",key); + } + return false; + } + + return true; +#else + Q_UNUSED(filepath) + QSettings settings(QDir::homePath()+"/.qmmp/qmmprc", QSettings::IniFormat); + settings.beginGroup("Application"); + settings.setValue("IS_RUNNING",TRUE); + settings.endGroup(); + return true; +#endif +} + +bool Guard::exists(const QString& filepath) +{ +#ifdef USE_SEMAPHORE + key_t key; + int sem_num = 1; + int sem_id; + + if( (key = ftok(filepath.toAscii().data(),'A')) < 0) + { + qWarning("Warning: Unable get access to key"); + return false; + } + + if( (sem_id = semget(key,sem_num,0)) < 0 ) + return false; + return true; +#else + Q_UNUSED(filepath) + QSettings settings(QDir::homePath()+"/.qmmp/qmmprc", QSettings::IniFormat); + settings.beginGroup("Application"); + bool res = settings.value("IS_RUNNING",FALSE).toBool(); + settings.endGroup(); + return res; +#endif +} + +bool Guard::destroy(const QString& filepath) +{ +#ifdef USE_SEMAPHORE + key_t key; + int sem_num = 1; + int sem_id; + + if( (key = ftok(filepath.toAscii().data(),'A')) < 0) + { + qWarning("Warning: Unable get access to key"); + return false; + } + if( (sem_id = semget(key,sem_num,0)) < 0 ) + { + qWarning("Unable get semaphore with key %d",key); + return false; + } + + if(semctl(sem_id,1,IPC_RMID) < 0) + { + qWarning("Unable remove semaphore with key %d",key); + return false; + } + return true; +#else + Q_UNUSED(filepath) + QSettings settings(QDir::homePath()+"/.qmmp/qmmprc", QSettings::IniFormat); + settings.beginGroup("Application"); + settings.setValue("IS_RUNNING",FALSE); + settings.endGroup(); + return true; +#endif +} -- cgit v1.2.3-13-gbd6f