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ed7e0765c4
* libguile/vectors.c (scm_c_make_vector): Allocate the whole vector and header with `scm_gc_malloc ()'. (scm_vector_copy): Use `scm_c_make_vector ()'. (scm_i_vector_free, MAKE_WEAK_VECTOR): Remove. (allocate_weak_vector): Rename to... (make_weak_vector): ... this. Change to return the whole weak vector, allocated with `scm_gc_malloc_pointerless ()'. (scm_i_make_weak_vector, scm_i_make_weak_vector_from_list): Use `make_weak_vector ()'. * libguile/vectors.h (SCM_I_VECTOR_HEADER_SIZE): New macro. (SCM_I_VECTOR_ELTS): Write in terms of `SCM_I_VECTOR_WELTS ()'. (SCM_I_VECTOR_WELTS): Update to the new representation. (SCM_I_WVECT_EXTRA, SCM_I_SET_WVECT_EXTRA): Likewise. (SCM_I_WVECT_GC_CHAIN, SCM_I_SET_WVECT_GC_CHAIN): Remove. * libguile/weaks.h (SCM_I_WVECT_DELTA, SCM_I_SET_WVECT_DELTA): Remove.
101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
/* classes: h_files */
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#ifndef SCM_WEAKS_H
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#define SCM_WEAKS_H
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/* Copyright (C) 1995,1996,2000,2001, 2003, 2006, 2008, 2009 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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#define SCM_WVECTF_WEAK_KEY 1
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#define SCM_WVECTF_WEAK_VALUE 2
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#define SCM_WVECT_WEAK_KEY_P(x) (SCM_I_WVECT_EXTRA(x) & SCM_WVECTF_WEAK_KEY)
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#define SCM_WVECT_WEAK_VALUE_P(x) (SCM_I_WVECT_EXTRA(x) & SCM_WVECTF_WEAK_VALUE)
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#define SCM_I_WVECT_TYPE(x) (SCM_I_WVECT_EXTRA(x) & 7)
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#define SCM_I_SET_WVECT_TYPE(x,t) (SCM_I_SET_WVECT_EXTRA \
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((x), (SCM_I_WVECT_EXTRA (x) & ~7) | (t)))
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#define SCM_IS_WHVEC(X) (SCM_I_WVECT_TYPE (X) == 1)
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#define SCM_IS_WHVEC_V(X) (SCM_I_WVECT_TYPE (X) == 2)
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#define SCM_IS_WHVEC_B(X) (SCM_I_WVECT_TYPE (X) == 3)
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#define SCM_IS_WHVEC_ANY(X) (SCM_I_WVECT_TYPE (X) != 0)
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/* Weak pairs. */
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SCM_INTERNAL SCM scm_weak_car_pair (SCM car, SCM cdr);
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SCM_INTERNAL SCM scm_weak_cdr_pair (SCM car, SCM cdr);
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SCM_INTERNAL SCM scm_doubly_weak_pair (SCM car, SCM cdr);
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/* Testing the weak component(s) of a cell for reachability. */
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#define SCM_WEAK_PAIR_WORD_DELETED_P(_cell, _word) \
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(SCM_CELL_OBJECT ((_cell), (_word)) == SCM_PACK (NULL))
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#define SCM_WEAK_PAIR_CAR_DELETED_P(_cell) \
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(SCM_WEAK_PAIR_WORD_DELETED_P ((_cell), 0))
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#define SCM_WEAK_PAIR_CDR_DELETED_P(_cell) \
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(SCM_WEAK_PAIR_WORD_DELETED_P ((_cell), 1))
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#define SCM_WEAK_PAIR_DELETED_P(_cell) \
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((SCM_WEAK_PAIR_CAR_DELETED_P (_cell)) \
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|| (SCM_WEAK_PAIR_CDR_DELETED_P (_cell)))
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/* Accessing the components of a weak cell. These return `SCM_UNDEFINED' if
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the car/cdr has been collected. */
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#define SCM_WEAK_PAIR_WORD(_cell, _word) \
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(SCM_WEAK_PAIR_WORD_DELETED_P ((_cell), (_word)) \
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? SCM_UNDEFINED \
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: SCM_CELL_OBJECT ((_cell), (_word)))
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#define SCM_WEAK_PAIR_CAR(_cell) (SCM_WEAK_PAIR_WORD ((_cell), 0))
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#define SCM_WEAK_PAIR_CDR(_cell) (SCM_WEAK_PAIR_WORD ((_cell), 1))
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/* Weak vectors and weak hash tables. */
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SCM_API SCM scm_make_weak_vector (SCM k, SCM fill);
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SCM_API SCM scm_weak_vector (SCM l);
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SCM_API SCM scm_weak_vector_p (SCM x);
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SCM_API SCM scm_make_weak_key_alist_vector (SCM k);
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SCM_API SCM scm_make_weak_value_alist_vector (SCM k);
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SCM_API SCM scm_make_doubly_weak_alist_vector (SCM k);
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SCM_API SCM scm_weak_key_alist_vector_p (SCM x);
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SCM_API SCM scm_weak_value_alist_vector_p (SCM x);
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SCM_API SCM scm_doubly_weak_alist_vector_p (SCM x);
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SCM_INTERNAL SCM scm_init_weaks_builtins (void);
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SCM_INTERNAL void scm_weaks_prehistory (void);
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SCM_INTERNAL void scm_init_weaks (void);
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SCM_INTERNAL void scm_i_init_weak_vectors_for_gc (void);
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SCM_INTERNAL void scm_i_mark_weak_vector (SCM w);
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SCM_INTERNAL int scm_i_mark_weak_vectors_non_weaks (void);
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SCM_INTERNAL void scm_i_remove_weaks_from_weak_vectors (void);
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#endif /* SCM_WEAKS_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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