lib/system/file_eraser.cpp

   1 #include <lib/system/file_eraser.h>
   2 #include <lib/system/init.h>
   3 #include <lib/system/init_num.h>
   4 #include <sys/types.h>
   5 #include <sys/wait.h>
   6 #include <unistd.h>
   7 #include <errno.h>
   8
   9 eBackgroundFileEraser *eBackgroundFileEraser::instance;
  10
  11 eBackgroundFileEraser::eBackgroundFileEraser()
  12         :messages(this,1)
  13 {
  14         if (!instance)
  15                 instance=this;
  16         CONNECT(messages.recv_msg, eBackgroundFileEraser::gotMessage);
  17         run();
  18 }
  19
  20 eBackgroundFileEraser::~eBackgroundFileEraser()
  21 {
  22         messages.send(Message::quit);
  23         if ( thread_running() )
  24                 kill();
  25         if (instance==this)
  26                 instance=0;
  27 }
  28
  29 void eBackgroundFileEraser::thread()
  30 {
  31         nice(5);
  32         exec();
  33 }
  34
  35 void eBackgroundFileEraser::erase(const char *filename)
  36 {
  37         messages.send(Message(Message::erase, filename?strdup(filename):0));
  38 }
  39
  40 void eBackgroundFileEraser::gotMessage(const Message &msg )
  41 {
  42         switch (msg.type)
  43         {
  44                 case Message::erase:
  45                         if ( msg.filename )
  46                         {
  47                                 if ( ::unlink(msg.filename) < 0 )
  48                                         eDebug("remove file %s failed (%m)", msg.filename);
  49                                 else
  50                                         eDebug("file %s erased", msg.filename);
  51                                 free((char*)msg.filename);
  52                         }
  53                         break;
  54                 case Message::quit:
  55                         quit(0);
  56                         break;
  57                 default:
  58                         eDebug("unhandled thread message");
  59         }
  60 }
  61
  62 eAutoInitP0<eBackgroundFileEraser> init_eBackgroundFilEraser(eAutoInitNumbers::configuration+1, "Background File Eraser");