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 /////////////////////////////////////////////////////////////////////////////
  26 // Static variables
  27 /////////////////////////////////////////////////////////////////////////////
  28
  29 static int p_thrd_pipe[2] = { -1, -1 };
  30 // WorkProc in GTK
  31 static gint p_thrd_inid;
  32
  33 #define THREAD_SEND_EXIT_MSG(ptr) write(p_thrd_pipe[1], &ptr, sizeof(ptr));
  34
  35 static void
  36 ThreadExitProc(gpointer WXUNUSED(client), gint fid,
  37                GdkInputCondition WXUNUSED(cond))
  38 {
  39   wxThread* ptr;
  40
  41   if (fid != p_thrd_pipe[0])
  42     return;
  43   if (read(fid, &ptr, sizeof(ptr)) == sizeof(ptr)) {
  44     //fprintf(stderr, "calling OnExit %p\n", ptr);
  45     ptr->OnExit();
  46   } else {
  47     //fprintf(stderr, "this should never happen\n");
  48   }
  49 }
  50
  51 // Global initialization
  52 static void wxThreadGuiInit()
  53 {
  54   pipe(p_thrd_pipe);
  55   p_thrd_inid = gdk_input_add(p_thrd_pipe[0], GDK_INPUT_READ,
  56                               ThreadExitProc, 0);
  57 }
  58
  59 // Global cleanup
  60 static void wxThreadGuiExit()
  61 {
  62   gdk_input_remove(p_thrd_inid);
  63   close(p_thrd_pipe[0]);
  64   close(p_thrd_pipe[1]);
  65 }