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   if (fid != p_thrd_pipe[0])
  41     return;
  42   if (read(fid, &ptr, sizeof(ptr)) == sizeof(ptr)) {
  43     //fprintf(stderr, "calling OnExit %p\n", ptr);
  44     ptr->OnExit();
  45   } else {
  46     //fprintf(stderr, "this should never happen\n");
  47   }
  48 }
  49
  50 // Global initialization
  51 static void wxThreadGuiInit()
  52 {
  53   pipe(p_thrd_pipe);
  54   p_thrd_inid = gdk_input_add(p_thrd_pipe[0], GDK_INPUT_READ,
  55                               ThreadExitProc, 0);
  56 }
  57
  58 // Global cleanup
  59 static void wxThreadGuiExit()
  60 {
  61   gdk_input_remove(p_thrd_inid);
  62   close(p_thrd_pipe[0]);
  63   close(p_thrd_pipe[1]);
  64 }
  65
  66 #ifdef NO_DEFINE_GDK_1_1
  67
  68 void wxMutexGuiEnter()
  69 {
  70   gdk_mutex_enter();
  71 }
  72
  73 void wxMutexGuiLeave()
  74 {
  75   gdk_mutex_leave();
  76 }
  77
  78 #else
  79
  80 void wxMutexGuiEnter()
  81 {
  82   wxMainMutex->Lock();
  83 }
  84
  85 void wxMutexGuiLeave()
  86 {
  87   wxMainMutex->Unlock();
  88 }
  89
  90 #endif