moved into qmmp dir

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@12 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 125 insertions, 0 deletions

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 <sys/types.h>
+	#include <sys/ipc.h>
+	#include <errno.h>
+	#include <sys/sem.h>
+#else
+	#include <QSettings>
+#endif
+
+#include <QDir>
+
+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
+}