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/*
Copyright (C) 2010 Zimin
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PLUGIN_FILESYSTEM_ENGINE_FILESYSTEMLOCK_H
#define PLUGIN_FILESYSTEM_ENGINE_FILESYSTEMLOCK_H
#include <pthread.h>
class FilesystemLock
{
public:
FilesystemLock();
~FilesystemLock();
void scan_begin();
void scan_end();
void scan_update_begin();
void scan_update_end();
private:
pthread_cond_t condition;
pthread_mutex_t mutex;
int scanner_count;
int updater_count;
};
class Guard
{
public:
Guard(pthread_mutex_t& mutex) : mutex_(&mutex)
{
pthread_mutex_lock(mutex_);
}
~Guard()
{
if (mutex_)
{
pthread_mutex_unlock(mutex_);
}
}
private:
pthread_mutex_t *mutex_;
};
#endif /* PLUGIN_FILESYSTEM_ENGINE_FILESYSTEMLOCK_H */
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