mirror of
https://github.com/s3fs-fuse/s3fs-fuse.git
synced 2024-11-13 07:56:30 +00:00
81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
|
/*
|
||
|
|
* s3fs - FUSE-based file system backed by Amazon S3
|
||
|
|
*
|
||
|
|
* Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <cstdio>
|
||
|
|
#include <cstdlib>
|
||
|
|
#include <cerrno>
|
||
|
|
|
||
|
|
#include "common.h"
|
||
|
|
#include "s3fs.h"
|
||
|
|
#include "autolock.h"
|
||
|
|
|
||
|
|
//-------------------------------------------------------------------
|
||
|
|
// Class AutoLock
|
||
|
|
//-------------------------------------------------------------------
|
||
|
|
AutoLock::AutoLock(pthread_mutex_t* pmutex, Type type) : auto_mutex(pmutex)
|
||
|
|
{
|
||
|
|
if (type == ALREADY_LOCKED) {
|
||
|
|
is_lock_acquired = false;
|
||
|
|
} else if (type == NO_WAIT) {
|
||
|
|
int res = pthread_mutex_trylock(auto_mutex);
|
||
|
|
if(res == 0){
|
||
|
|
is_lock_acquired = true;
|
||
|
|
}else if(res == EBUSY){
|
||
|
|
is_lock_acquired = false;
|
||
|
|
}else{
|
||
|
|
S3FS_PRN_CRIT("pthread_mutex_trylock returned: %d", res);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
int res = pthread_mutex_lock(auto_mutex);
|
||
|
|
if(res == 0){
|
||
|
|
is_lock_acquired = true;
|
||
|
|
}else{
|
||
|
|
S3FS_PRN_CRIT("pthread_mutex_lock returned: %d", res);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool AutoLock::isLockAcquired() const
|
||
|
|
{
|
||
|
|
return is_lock_acquired;
|
||
|
|
}
|
||
|
|
|
||
|
|
AutoLock::~AutoLock()
|
||
|
|
{
|
||
|
|
if (is_lock_acquired) {
|
||
|
|
int res = pthread_mutex_unlock(auto_mutex);
|
||
|
|
if(res != 0){
|
||
|
|
S3FS_PRN_CRIT("pthread_mutex_lock returned: %d", res);
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Local variables:
|
||
|
|
* tab-width: 4
|
||
|
|
* c-basic-offset: 4
|
||
|
|
* End:
|
||
|
|
* vim600: expandtab sw=4 ts=4 fdm=marker
|
||
|
|
* vim<600: expandtab sw=4 ts=4
|
||
|
|
*/
|