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5804c977d7
* libguile/scm.h (struct scm_thread, scm_thread): Rename from scm_i_thread. * libguile/deprecated.h (scm_i_thread): Add deprecated typedef. * libguile/threads.h: Adapt to renaming. * libguile/intrinsics.h: * libguile/scmsigs.h: * libguile/cache-internal.h: Remove threads.h includes; unnecessary with the forward decl. * libguile/continuations.h: * libguile/gc-inline.h: * libguile/async.h: Adapt scm_thread type name change. * libguile/async.c: * libguile/continuations.c: * libguile/control.c: * libguile/dynstack.c: * libguile/dynwind.c: * libguile/eval.c: * libguile/finalizers.c: * libguile/fluids.c: * libguile/gc.c: * libguile/intrinsics.c: * libguile/load.c: * libguile/memoize.c: * libguile/print.c: * libguile/read.c: * libguile/scmsigs.c: * libguile/script.c: * libguile/stackchk.c: * libguile/stacks.c: * libguile/symbols.c: * libguile/threads.c: * libguile/throw.c: * libguile/vm-engine.c: * libguile/vm.c: Adapt to type name change, and add additional includes as needed.
137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
/* Copyright 1995-1996,1998-2001,2003-2004,2006,2008,2010-2012,2018
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Free Software Foundation, Inc.
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This file is part of Guile.
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Guile is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Guile is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Guile. If not, see
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<https://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include "boolean.h"
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#include "dynstack.h"
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#include "eval.h"
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#include "pairs.h"
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#include "ports.h"
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#include "threads.h"
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#include "variable.h"
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#include "dynwind.h"
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SCM
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scm_dynamic_wind (SCM in_guard, SCM thunk, SCM out_guard)
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#define FUNC_NAME "dynamic-wind"
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{
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SCM ans;
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scm_thread *thread = SCM_I_CURRENT_THREAD;
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SCM_ASSERT (scm_is_true (scm_thunk_p (out_guard)), out_guard,
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SCM_ARG3, FUNC_NAME);
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scm_call_0 (in_guard);
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scm_dynstack_push_dynwind (&thread->dynstack, in_guard, out_guard);
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ans = scm_call_0 (thunk);
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scm_dynstack_pop (&thread->dynstack);
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scm_call_0 (out_guard);
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return ans;
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}
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#undef FUNC_NAME
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void
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scm_dynwind_begin (scm_t_dynwind_flags flags)
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{
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scm_thread *thread = SCM_I_CURRENT_THREAD;
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scm_dynstack_push_frame (&thread->dynstack, flags);
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}
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void
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scm_dynwind_end (void)
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{
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scm_dynstack_unwind_frame (&SCM_I_CURRENT_THREAD->dynstack);
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}
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void
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scm_dynwind_unwind_handler (void (*proc) (void *), void *data,
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scm_t_wind_flags flags)
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{
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scm_thread *thread = SCM_I_CURRENT_THREAD;
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scm_t_dynstack *dynstack = &thread->dynstack;
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scm_dynstack_push_unwinder (dynstack, flags, proc, data);
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}
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void
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scm_dynwind_rewind_handler (void (*proc) (void *), void *data,
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scm_t_wind_flags flags)
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{
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scm_thread *thread = SCM_I_CURRENT_THREAD;
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scm_t_dynstack *dynstack = &thread->dynstack;
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scm_dynstack_push_rewinder (dynstack, 0, proc, data);
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if (flags & SCM_F_WIND_EXPLICITLY)
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proc (data);
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}
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void
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scm_dynwind_unwind_handler_with_scm (void (*proc) (SCM), SCM data,
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scm_t_wind_flags flags)
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{
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/* FIXME: This is not a safe cast. */
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scm_dynwind_unwind_handler ((scm_t_guard) proc, SCM2PTR (data), flags);
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}
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void
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scm_dynwind_rewind_handler_with_scm (void (*proc) (SCM), SCM data,
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scm_t_wind_flags flags)
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{
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/* FIXME: This is not a safe cast. */
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scm_dynwind_rewind_handler ((scm_t_guard) proc, SCM2PTR (data), flags);
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}
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void
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scm_dynwind_free (void *mem)
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{
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scm_dynwind_unwind_handler (free, mem, SCM_F_WIND_EXPLICITLY);
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}
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void
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scm_swap_bindings (SCM vars, SCM vals)
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{
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SCM tmp;
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while (scm_is_pair (vals))
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{
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tmp = SCM_VARIABLE_REF (SCM_CAR (vars));
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SCM_VARIABLE_SET (SCM_CAR (vars), SCM_CAR (vals));
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SCM_SETCAR (vals, tmp);
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vars = SCM_CDR (vars);
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vals = SCM_CDR (vals);
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}
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}
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void
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scm_init_dynwind ()
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{
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#include "dynwind.x"
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}
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