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a0551390d5
* libguile/finalizers.h: * libguile/finalizers.c (scm_i_register_weak_gc_callback): New internal helper, from weak-set.c. Relative to the previous weak-set.c version, prefer the finalizer-based implementation. Fix bug regarding confusion between scm_before_gc_c_hook and scm_after_gc_hook. Fix bug regarding referencing weak values outside of the alloc lock. * libguile/weak-set.c (GC_move_disappearing_link): New stub. GC_move_disappearing_link is only available in libgc 7.3. (move_weak_entry): Use the new stub instead of ifdeffery. (resize_set): Now that we run finalizers from a separate thread or async, we can keep the lock while reallocating the set vector. (do_vacuum_weak_set): For the same reason, always lock the set. Remove implementation of scm_c_register_weak_gc_callback in preference of the new copy in finalizers.c. (scm_c_make_weak_set): Use the new scm_i_register_weak_gc_callback.
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
#ifndef SCM_FINALIZERS_H
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#define SCM_FINALIZERS_H
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/* Copyright (C) 2012, 2013 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "libguile/__scm.h"
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typedef void (*scm_t_finalizer_proc) (void *obj, void *data);
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SCM_INTERNAL void scm_i_set_finalizer (void *obj, scm_t_finalizer_proc,
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void *data);
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SCM_INTERNAL void scm_i_add_finalizer (void *obj, scm_t_finalizer_proc,
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void *data);
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SCM_INTERNAL void scm_i_add_resuscitator (void *obj, scm_t_finalizer_proc,
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void *data);
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SCM_INTERNAL void scm_i_finalizer_pre_fork (void);
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/* CALLBACK will be called on OBJ after each garbage collection, as long
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as OBJ is accessible. It will be called from a finalizer, which may
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be from an async or from another thread. */
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SCM_INTERNAL void scm_i_register_weak_gc_callback (SCM obj, void (*callback) (SCM));
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SCM_INTERNAL void scm_init_finalizers (void);
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SCM_INTERNAL void scm_init_finalizer_thread (void);
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#endif /* SCM_FINALIZERS_H */
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