Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #include "LockFile.h"
      11             : #include "MooseError.h"
      12             : #include <fcntl.h>
      13             : #include <sys/file.h>
      14             : #include <unistd.h>
      15             : 
      16      171127 : LockFile::LockFile(const std::string & filename, bool do_lock)
      17      171127 :   : _do_lock(do_lock), _fd(-1), _filename(filename)
      18             : {
      19             : // for now just do not do any locking on Windows
      20             : #ifndef __WIN32__
      21      171127 :   if (_do_lock)
      22             :   {
      23      129700 :     _fd = open(filename.c_str(), O_RDWR | O_CREAT, 0666);
      24      129700 :     if (_fd == -1)
      25           0 :       mooseError("Failed to open file", filename);
      26      129700 :     if (flock(_fd, LOCK_EX) != 0)
      27           0 :       mooseWarning("Failed to lock file ", filename);
      28             :   }
      29             : #endif
      30      171127 : }
      31             : 
      32      342254 : LockFile::~LockFile()
      33             : {
      34             : #ifndef __WIN32__
      35      171127 :   if (_do_lock)
      36             :   {
      37      129700 :     if (flock(_fd, LOCK_UN) != 0)
      38           0 :       mooseWarning("Failed to unlock file ", _filename);
      39      129700 :     close(_fd);
      40             :   }
      41             : #endif
      42      171127 : }