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12c1d8616d
* libguile/init.h: * libguile/init.c (scm_i_init_guile): Change arg to this internal function from SCM_STACKITEM* to void*. Actually it's a struct GC_stack_base*. * libguile/bdw-gc.h: Don't do pthread redirects, because we don't want to affect applications' pthread_* bindings. * libguile/pthread-threads.h (scm_i_pthread_create) (scm_i_pthread_detach, scm_i_pthread_exit, scm_i_pthread_cancel) (scm_i_pthread_sigmask): Do pthread redirects here, in this internal header. * libguile/threads.h: Remove declaration of internal scm_i_with_guile_and_parent. Remove declaration of undefined scm_threads_init_first_thread. Make declaration of internal scm_threads_prehistory actually internal, and take a void* (actually a struct GC_stack_base*). * libguile/threads.c (GC_get_stack_base): Implement a shim if this function is unavailable, and fold in the implementations of get_thread_stack_base. (GC_call_with_stack_base): Actually implement. (guilify_self_1): Take a GC_stack_base* as an arg. (scm_i_init_thread_for_guile): Likewise, and set up libgc for registration of other threads. (scm_init_guile): Use GC_get_stack_base instead of our own guesswork. (with_guile_and_parent, scm_i_with_guile_and_parent): Rework to trampoline through a GC_call_with_stack_base. (scm_threads_prehistory): Pass the "base" arg on to guilify_self_1.
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
#ifndef SCM_BDW_GC_H
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#define SCM_BDW_GC_H
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/* Copyright (C) 2006, 2008, 2009, 2011 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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/* Correct header inclusion. */
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#include "libguile/scmconfig.h"
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#ifdef SCM_USE_PTHREAD_THREADS
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/* When pthreads are used, let `libgc' know about it and redirect allocation
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calls such as `GC_MALLOC ()' to (contention-free, faster) thread-local
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allocation. */
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# define GC_THREADS 1
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# define GC_REDIRECT_TO_LOCAL 1
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/* Don't #define pthread routines to their GC_pthread counterparts.
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Instead we will be careful inside Guile to use the GC_pthread
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routines. */
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# define GC_NO_THREAD_REDIRECTS 1
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#endif
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#include <gc/gc.h>
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#if (! ((defined GC_VERSION_MAJOR) && (GC_VERSION_MAJOR >= 7)))
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/* This was needed with `libgc' 6.x. */
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# include <gc/gc_local_alloc.h>
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#endif
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#if (defined GC_VERSION_MAJOR) && (GC_VERSION_MAJOR >= 7)
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/* This type was provided by `libgc' 6.x. */
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typedef void *GC_PTR;
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#endif
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/* Return true if PTR points to the heap. */
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#define SCM_I_IS_POINTER_TO_THE_HEAP(ptr) \
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(GC_base (ptr) != NULL)
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/* Register a disappearing link for the object pointed to by OBJ such that
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the pointer pointed to be LINK is cleared when OBJ is reclaimed. Do so
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only if OBJ actually points to the heap. See
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http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/2563
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for details. */
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#define SCM_I_REGISTER_DISAPPEARING_LINK(link, obj) \
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((SCM_I_IS_POINTER_TO_THE_HEAP (obj)) \
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? GC_GENERAL_REGISTER_DISAPPEARING_LINK ((link), (obj)) \
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: 0)
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#endif /* SCM_BDW_GC_H */
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