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cleanups to debug-print, try harder to make it work during GC -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-02-08 Ben Wing <ben@xemacs.org> * emacs.c: * emacs.c (assert_failed): Fix comments about when inhibit_non_essential_printing_operations is set and how used. Increment/decrement in assert_failed rather than just setting/resetting to avoid hosing things in case we're called when the value is already non-zero. Similarly increment/ decrement in_assert_failed. * gc.c (gc_prepare): * gc.c (gc_finish): Increment/decrement inhibit_non_essential_printing_operations rather than setting/resetting. * print.c: * print.c (debug_out): * print.c (write_string_to_alternate_debugging_output): * print.c (restore_inhibit_non_essential_conversion_operations): * print.c (debug_print_exit): * print.c (debug_print_enter): * print.c (debug_prin1): * print.c (debug_p4): * print.c (ext_print_begin): * print.c (ext_print_end): * print.c (external_debug_print): * print.c (debug_p3): * print.c (debug_backtrace): * print.c (debug_short_backtrace): * print.c (vars_of_print): Lots of cleanup. Fix debug_out() so it binds inhibit_non_essential_printing_operations around it to ensure no conversion. Remove many other places that set the same var since the lower-level functions now all do it. A few other places, add inhibit_non_essential_printing_operations bindings.Extract the code out that sets up and resets lots of bindings in debug_prin1() so that debug_backtrace() can use it, and rewrite it to use the new STORE_VOID_IN_LISP() rather than having to have a single static opaque structure holding all the bindings (and not handling reentrancy). Fix raw `char' to be `CIbyte' in the declaration of `alternate_do_string'. * signal.c (check_what_happened): Fix bug: Don't try to check for QUIT when inhibit_non_essential_printing_operations or we may screw things up if QUIT happens during debug printing.
author Ben Wing <ben@xemacs.org>
date Mon, 08 Feb 2010 07:00:24 -0600
parents 141c2920ea48
children 308d34e9f07d
line wrap: on
line source

/* 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 "lisp.h"

#ifndef INCLUDED_vdb_h_
#define INCLUDED_vdb_h_


/*--- prototypes -------------------------------------------------------*/

BEGIN_C_DECLS

/* Platform dependent signal handling: */

/* Install the platform-dependent signal handler. */
void vdb_install_signal_handler (void);

/* Platform dependent memory protection. */
void vdb_protect (void *ptr, EMACS_INT len);
void vdb_unprotect (void *ptr, EMACS_INT len);



/* Common (platform independent) virtual diry bit stuff: */

/* Start the write barrier.  This function is called when a garbage
   collection is suspendend and the client is resumed. */
void vdb_start_dirty_bits_recording (void);
/* Stop the write barrier.  This function is called when the client is
   suspendend and garbage collection is resumed. */
void vdb_stop_dirty_bits_recording (void);

/* Record page faults: Add the object pointed to by addr to the write
   barrer's internal data structure that stores modified objects.
   This function is called by the write barrier's fault handler. */
void vdb_designate_modified (void *addr);

/* Propagate page faults to garbage collector: Read out the write
   barrier's internal data structure that stores modified objects and
   pass the information to the garbage collector.  This function is
   called by vdb_stop_dirty_bits_recording().  Return how many objects
   have to be re-examined by the garbage collector. */
int vdb_read_dirty_bits (void);

/* Provides Lisp functions for testing vdb implementation. */
void syms_of_vdb (void);

END_C_DECLS

#endif /* INCLUDED_vdb_h_ */