mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-02 04:40:29 +02:00
* libguile/fluids.c (all_dynamic_states, all_fluids): Remove. Together, they prevented dynamic states and fluids to be collected. Callers no longer use them. (resize_all_states): Remove. (grow_dynamic_state): New function. (next_fluid_num): Don't call `resize_all_states ()'. (scm_i_fluid_num, scm_i_fast_fluid_ref, scm_i_fast_fluid_set_x): Remove, as they broke encapsulation and would have needed duplication of the lazy dynamic state growing code. (scm_fluid_ref, scm_fluid_set_x): Lazily grow the dynamic state's fluid vector. (scm_fluids_prehistory): Don't set an `scm_after_sweep_c_hook'. * libguile/fluids.h (SCM_FLUID_NUM, SCM_FAST_FLUID_REF, SCM_FAST_FLUID_SET_X, scm_i_fluid_num, scm_i_fast_fluid_set_x, scm_i_fast_fluid_ref): Remove. * libguile/load.c (the_reader_fluid_num): Remove. (scm_primitive_load): Use `scm_fluid_ref ()' instead of `SCM_FAST_FLUID_REF ()'. (scm_init_load): Likewise.
89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/* classes: h_files */
|
||
|
||
#ifndef SCM_FLUIDS_H
|
||
#define SCM_FLUIDS_H
|
||
|
||
/* Copyright (C) 1996,2000,2001, 2006, 2008 Free Software Foundation, Inc.
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2.1 of the License, or (at your option) any later version.
|
||
*
|
||
* This library 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
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library; if not, write to the Free Software
|
||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
*/
|
||
|
||
|
||
|
||
#include "libguile/__scm.h"
|
||
#include "libguile/root.h"
|
||
#include "libguile/vectors.h"
|
||
|
||
/* Fluids.
|
||
|
||
Fluids are objects of a certain type (a smob) that can hold one SCM
|
||
value per dynamic state. That is, modifications to this value are
|
||
only visible to code that executes with the same dynamic state as
|
||
the modifying code. When a new dynamic state is constructed, it
|
||
inherits the values from its parent. Because each thread executes
|
||
with its own dynamic state, you can use fluids for thread local
|
||
storage.
|
||
|
||
Each fluid is identified by a small integer. This integer is used
|
||
to index a vector that holds the values of all fluids. A dynamic
|
||
state consists of this vector, wrapped in a smob so that the vector
|
||
can grow.
|
||
*/
|
||
|
||
/* The fastest way to acces/modify the value of a fluid. These macros
|
||
do no error checking at all. The first argument is the index
|
||
number of the fluid, obtained via SCM_FLUID_NUM, not the fluid
|
||
itself. You must make sure that the fluid remains protected as
|
||
long you use its number since numbers of unused fluids are reused
|
||
eventually.
|
||
*/
|
||
|
||
SCM_API SCM scm_make_fluid (void);
|
||
SCM_API int scm_is_fluid (SCM obj);
|
||
SCM_API SCM scm_fluid_p (SCM fl);
|
||
SCM_API SCM scm_fluid_ref (SCM fluid);
|
||
SCM_API SCM scm_fluid_set_x (SCM fluid, SCM value);
|
||
|
||
SCM_API SCM scm_c_with_fluids (SCM fluids, SCM vals,
|
||
SCM (*cproc)(void *), void *cdata);
|
||
SCM_API SCM scm_c_with_fluid (SCM fluid, SCM val,
|
||
SCM (*cproc)(void *), void *cdata);
|
||
SCM_API SCM scm_with_fluids (SCM fluids, SCM vals, SCM thunk);
|
||
SCM_API SCM scm_with_fluid (SCM fluid, SCM val, SCM thunk);
|
||
|
||
SCM_API void scm_dynwind_fluid (SCM fluid, SCM value);
|
||
|
||
SCM_API SCM scm_make_dynamic_state (SCM parent);
|
||
SCM_API SCM scm_dynamic_state_p (SCM obj);
|
||
SCM_API int scm_is_dynamic_state (SCM obj);
|
||
SCM_API SCM scm_current_dynamic_state (void);
|
||
SCM_API SCM scm_set_current_dynamic_state (SCM state);
|
||
SCM_API void scm_dynwind_current_dynamic_state (SCM state);
|
||
SCM_API void *scm_c_with_dynamic_state (SCM state,
|
||
void *(*func)(void *), void *data);
|
||
SCM_API SCM scm_with_dynamic_state (SCM state, SCM proc);
|
||
|
||
SCM_INTERNAL SCM scm_i_make_initial_dynamic_state (void);
|
||
|
||
SCM_INTERNAL void scm_fluids_prehistory (void);
|
||
SCM_INTERNAL void scm_init_fluids (void);
|
||
|
||
#endif /* SCM_FLUIDS_H */
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|