xlike cleanup, documentation -------------------- ChangeLog entries follow: -------------------- man/ChangeLog addition: 2010-02-03 Ben Wing <ben@xemacs.org> * internals/internals.texi (Top): * internals/internals.texi (Evaluation; Stack Frames; Bindings): * internals/internals.texi (Ben's README): * internals/internals.texi (Consoles; Devices; Frames; Windows): * internals/internals.texi (Window Hierarchy): * internals/internals.texi (The Window Object): * internals/internals.texi (Modules for the Basic Displayable Lisp Objects): * internals/internals.texi (Window-System Support): * internals/internals.texi (Creating a Window-System Type): * internals/internals.texi (Discussion -- Garbage Collection): Update the part at the top about how to maintain the file with more tips. Add a chapter on "window-system support" describing in a general way how the support for different window systems/device types works, including the separation between device-independent and device-dependent parts, device methods, the specific device types and the "xlike" pseudo-type. src/ChangeLog addition: 2010-02-03 Ben Wing <ben@xemacs.org> * Makefile.in.in: * Makefile.in.in (x_objs): * Makefile.in.in (gtk_gui_objs): * console-xlike-inc.h: * depend: * device-x.c: * emacs.c: * gccache-gtk.h: * gccache-gtk.h (gc_cache_lookup): * gccache-x.c: * gccache-x.c (GCCACHE_HASH): * gccache-x.h: * toolbar-gtk.c: * toolbar-gtk.c (gtk_initialize_frame_toolbars): * toolbar-x.c: * toolbar-x.c (x_initialize_frame_toolbars): * toolbar-xlike.c: * toolbar-xlike.c (xlike_draw_blank_toolbar_button): * toolbar-xlike.c (xlike_output_toolbar_button): * toolbar-xlike.c (xlike_get_button_size): * toolbar-xlike.c (XLIKE_OUTPUT_BUTTONS_LOOP): * toolbar-xlike.c (xlike_output_toolbar): * toolbar-xlike.c (xlike_clear_toolbar): * toolbar-xlike.c (xlike_output_frame_toolbars): * toolbar-xlike.c (xlike_clear_frame_toolbars): * toolbar-xlike.c (xlike_redraw_exposed_toolbar): * toolbar-xlike.c (xlike_redraw_exposed_toolbars): * toolbar-xlike.c (xlike_redraw_frame_toolbars): * toolbar-xlike.h: * toolbar-xlike.h (xlike_clear_frame_toolbars): Rename some files to make them consistent with general naming rules: xgccache.c -> gccache-x.c xgccache.h -> gccache-x.h toolbar-common.c -> toolbar-xlike.c toolbar-common.h -> toolbar-xlike.h Fix include-file references. Also change the names of functions in now-named toolbar-xlike.c to be xlike_foo() instead of common_foo(). Add a longish comment in console-xlike-inc.h describing the "xlike" system, how it works and what the various files are used for.

/* Virtual diry bit implementation for XEmacs.
   Copyright (C) 2005 Marcus Crestani.

This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

#include <config.h>
#include "lisp.h"
#include "gc.h"
#include "mc-alloc.h"
#include "vdb.h"

#include "syswindows.h"


LONG WINAPI 
win32_fault_handler (LPEXCEPTION_POINTERS e)
{
#define GET_FAULT_ADDRESS (void *) e->ExceptionRecord->ExceptionInformation[1]
  if ((e->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
      && (e->ExceptionRecord->ExceptionInformation[0] == 1)
      && write_barrier_enabled
      && (fault_on_protected_page (GET_FAULT_ADDRESS)))
    {
      vdb_designate_modified (GET_FAULT_ADDRESS);
      unprotect_page_and_mark_dirty (GET_FAULT_ADDRESS);
      return EXCEPTION_CONTINUE_EXECUTION;
    } 
  else
    return EXCEPTION_CONTINUE_SEARCH;
}

typedef LONG (WINAPI *gcPVECTORED_EXCEPTION_HANDLER) (LPEXCEPTION_POINTERS e);


void
vdb_install_signal_handler (void)
{
  HMODULE hm;
  PVOID (WINAPI *aveh) (ULONG, gcPVECTORED_EXCEPTION_HANDLER);
  
  /* See init_signals_very_early () in signal.c. */
  if (noninteractive && !initialized)
    {
      allow_incremental_gc = 0;
      return;
    }

  hm = qxeGetModuleHandle (XETEXT ("kernel32"));
  if (hm)
    aveh = (PVOID (WINAPI *) (ULONG, gcPVECTORED_EXCEPTION_HANDLER))
      GetProcAddress (hm, "AddVectoredExceptionHandler");
  else
    {
      fprintf (stderr, "\nFAILED TO LOAD LIBRARY\n");
      aveh = NULL;
    }
  if (aveh)
    {
      allow_incremental_gc = 1;
      aveh (TRUE, win32_fault_handler);
    }
  else
    {
      fprintf (stderr, "\nFAILED TO INSTALL SIGNAL HANDLER\n");
      ABORT ();
    }
}


void
vdb_protect (void *ptr, EMACS_INT len)
{
  DWORD old;
  VirtualProtect (ptr, len, PAGE_READONLY, &old);
}


void
vdb_unprotect (void *ptr, EMACS_INT len)
{
  DWORD old;
  VirtualProtect (ptr, len, PAGE_READWRITE, &old);
}