nel/tools/misc/lock/lock.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "nel/misc/types_nl.h"
  18 #include "nel/misc/time_nl.h"
  19 #include "nel/misc/common.h"
  20 #include <stdio.h>
  21
  22 using namespace NLMISC;
  23
  24 int main(int argc, char* argv[])
  25 {
  26         if (argc <3)
  27         {
  28                 printf ("lock [filein] [fleout]\n\t");
  29         }
  30         else
  31         {
  32                 // Random
  33                 srand ((int)CTime::getLocalTime ());
  34
  35                 // Open the filein
  36                 while (1)
  37                 {
  38                         // Rename the file
  39                         if (rename(argv[1], argv[2]) == 0)
  40                         {
  41                                 return 1;
  42                         }
  43                         else
  44                         {
  45                                 // Sleep..
  46                                 printf ("Locked. Waiting for lock to be released\n");
  47                                 uint sleepTime = (rand () * 5000) / RAND_MAX;
  48                                 nlSleep (sleepTime);
  49                         }
  50                 }
  51
  52                 // Open the fileout
  53                 FILE *fileOut = fopen (argv[2], "w");
  54         }
  55
  56         return 0;
  57 }