src/gtk/threadgui.inc

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        threadgui.inc
   3 // Purpose:     GUI thread manager for GTK
   4 // Author:      Original from Wolfram Gloger/Guilhem Lavaux
   5 // Modified by:
   6 // Created:     04/22/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Wolfram Gloger (1996, 1997); Guilhem Lavaux (1998)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include <stdio.h>
  13 #include <unistd.h>
  14
  15 // for select()
  16 #include <sys/time.h>
  17 #include <sys/types.h>
  18 #ifdef __sgi
  19 #include <bstring.h>
  20 #endif
  21
  22 #include <gdk/gdk.h>
  23
  24 /////////////////////////////////////////////////////////////////////////////
  25 // Static variables
  26 /////////////////////////////////////////////////////////////////////////////
  27
  28 static int p_thrd_pipe[2] = { -1, -1 };
  29 // WorkProc in GTK
  30 static gint p_thrd_inid;
  31
  32 #define THREAD_SEND_EXIT_MSG(ptr) write(p_thrd_pipe[1], &ptr, sizeof(ptr));
  33
  34 static void
  35 ThreadExitProc(gpointer WXUNUSED(client), gint fid,
  36                GdkInputCondition WXUNUSED(cond))
  37 {
  38     wxThread* ptr;
  39
  40     // printf( "thread exit proc.\n" );
  41
  42     if (fid != p_thrd_pipe[0])
  43         return;
  44
  45     if (read(fid, &ptr, sizeof(ptr)) == sizeof(ptr))
  46     {
  47         // printf( "calling OnExit %p\n", ptr);
  48         ptr->OnExit();
  49     }
  50     else
  51     {
  52         // printf( "this should never happen\n" );
  53     }
  54 }
  55
  56 // Global initialization
  57 static void wxThreadGuiInit()
  58 {
  59   pipe(p_thrd_pipe);
  60   p_thrd_inid = gdk_input_add(p_thrd_pipe[0], GDK_INPUT_READ,
  61                               ThreadExitProc, 0);
  62 }
  63
  64 // Global cleanup
  65 static void wxThreadGuiExit()
  66 {
  67   gdk_input_remove(p_thrd_inid);
  68   close(p_thrd_pipe[0]);
  69   close(p_thrd_pipe[1]);
  70 }
  71
  72 void wxMutexGuiEnter()
  73 {
  74   gs_mutexGui->Lock();
  75 }
  76
  77 void wxMutexGuiLeave()
  78 {
  79   gs_mutexGui->Unlock();
  80 }