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dc53f02690
marking code, and make marker routines only responsible for turning up outgoing pointers. * gc.c (scm_gc_mark): Set the mark bit on ports and smobs here, before calling the marking function. Don't call the marking function if it's zero. * markers.c (scm_mark0): Just return #f. This function isn't necessary at all now, but it's harmless to call it. We'll leave it in so other folks' code doesn't croak at link time. (scm_markcdr): Don't call SCM_SETGC8MARK. * async.c (mark_async): Don't call SCM_SETGC8MARK. * dynl.c (mark_dynl_obj): Same. * root.c (mark_root): Same. * srcprop.c (marksrcprops): Same. * unif.c (markra): Same. * variable.c (scm_markvar): Same. * ports.c (scm_markstream): Same. (void_port_ptob): Specify zero for our marking function. * debug.c (debugobjsmob): Same. * dynwind.c (guardsmob): Same. * filesys.c (dir_smob): Same. * fluids.c (fluid_smob): Same. * fports.c (scm_fptob, scm_pipob): Same. * mallocs.c (mallocsmob): Same. * regex-posix.c (regex_t_smob): Same. * smob.c (freecell, flob, bigob): Same. * threads.c (thread_smob, mutex_smob, condvar_smob): Same. * throw.c (jbsmob, lazy_catch_funs): Same.
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include <stdio.h>
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#include "_scm.h"
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#include "markers.h"
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/* {GC marking}
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*/
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/* This function is vestigial. It used to be the mark function's
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responsibility to set the mark bit on the smob or port, but now the
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generic marking routine in gc.c takes care of that, and a zero
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pointer for a mark function means "don't bother". So you never
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need scm_mark0.
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However, we leave it here because it's harmless to call it, and
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people out there have smob code that uses it, and there's no reason
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to make their links fail. */
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SCM
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scm_mark0 (ptr)
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SCM ptr;
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{
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return SCM_BOOL_F;
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}
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SCM
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scm_markcdr (ptr)
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SCM ptr;
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{
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return SCM_CDR (ptr);
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}
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scm_sizet
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scm_free0 (ptr)
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SCM ptr;
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{
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return 0;
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}
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