+
−/* 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
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−under the terms of the GNU General Public License as published by the
+
−Free Software Foundation, either version 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>. */
+
−
+
−/* Synched up with: Not in FSF. */
+
−
+
−#include "lisp.h"
+
−
+
−#ifndef INCLUDED_vdb_h_
+
−#define INCLUDED_vdb_h_
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−
+
−
+
−/*--- 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
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−   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
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−   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
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−   barrer's internal data structure that stores modified objects.
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−   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
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−   barrier's internal data structure that stores modified objects and
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−   pass the information to the garbage collector.  This function is
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−   called by vdb_stop_dirty_bits_recording().  Return how many objects
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−   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_ */