src/unix/appunix.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/unix/appunix.cpp
   3 // Purpose:     wxAppConsole with wxMainLoop implementation
   4 // Author:      Lukasz Michalski
   5 // Created:     28/01/2005
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) Lukasz Michalski
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/app.h"
  12 #include "wx/log.h"
  13 #include "wx/evtloop.h"
  14
  15 //this code should not be compiled when GUI is defined
  16 //(monolithic build issue)
  17 #if !wxUSE_GUI
  18
  19 #include <signal.h>
  20 #include <unistd.h>
  21
  22 bool wxAppConsoleUnix::Initialize(int& argc, wxChar** argv)
  23 {
  24     if ( !wxAppConsole::Initialize(argc,argv) )
  25         return false;
  26
  27     if ( !m_mainLoop->IsOk() )
  28         return false;
  29
  30     sigemptyset(&m_signalsCaught);
  31
  32     return true;
  33 }
  34
  35 void wxAppConsoleUnix::HandleSignal(int signal)
  36 {
  37     wxAppConsoleUnix * const app = wxTheApp;
  38     if ( !app )
  39         return;
  40
  41     sigaddset(&(app->m_signalsCaught), signal);
  42     app->WakeUpIdle();
  43 }
  44
  45 void wxAppConsoleUnix::CheckSignal()
  46 {
  47     for ( SignalHandlerHash::iterator it = m_signalHandlerHash.begin();
  48           it != m_signalHandlerHash.end();
  49           ++it )
  50     {
  51         int sig = it->first;
  52         if ( sigismember(&m_signalsCaught, sig) )
  53         {
  54             sigdelset(&m_signalsCaught, sig);
  55             (it->second)(sig);
  56         }
  57     }
  58 }
  59
  60 bool wxAppConsoleUnix::SetSignalHandler(int signal, SignalHandler handler)
  61 {
  62     const bool install = handler != SIG_DFL && handler != SIG_IGN;
  63
  64     struct sigaction sa;
  65     memset(&sa, 0, sizeof(sa));
  66     sa.sa_handler = &wxAppConsoleUnix::HandleSignal;
  67     sa.sa_flags = SA_RESTART;
  68     int res = sigaction(signal, &sa, 0);
  69     if ( res != 0 )
  70     {
  71         wxLogSysError(_("Failed to install signal handler"));
  72         return false;
  73     }
  74
  75     if ( install )
  76         m_signalHandlerHash[signal] = handler;
  77     else
  78         m_signalHandlerHash.erase(signal);
  79
  80     return true;
  81 }
  82
  83 #endif // !wxUSE_GUI