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c957ec7ab0
* libguile/__scm.h (SCM_TICK): Always define as scm_async_tick(). * libguile/error.c (scm_syserror, scm_syserror_msg): * libguile/fports.c (fport_read, fport_write): * libguile/_scm.h (SCM_SYSCALL): Replace SCM_ASYNC_TICK with scm_async_tick (). (SCM_ASYNC_TICK, SCM_ASYNC_TICK_WITH_CODE) (SCM_ASYNC_TICK_WITH_GUARD_CODE): Remove internal definitions. We inline into vm-engine.c, the only place where it matters. * libguile/async.h: * libguile/async.c (scm_async_tick, scm_i_setup_sleep): (scm_i_reset_sleep, scm_system_async_mark_for_thread): * libguile/threads.h (struct scm_thread_wake_data): * libguile/threads.h (scm_i_thread): * libguile/threads.c (block_self, guilify_self_1, scm_std_select): Rewrite to use sequentially-consistent atomic references. * libguile/atomics-internal.h (scm_atomic_set_pointer): (scm_atomic_ref_pointer): New definitions. * libguile/finalizers.c (queue_finalizer_async): We can allocate, so just use scm_system_async_mark_for_thread instead of the set-cdr! shenanigans. * libguile/scmsigs.c (take_signal): * libguile/gc.c (queue_after_gc_hook): Adapt to new asyncs mechanism. Can't allocate but we're just manipulating the current thread when no other threads are running so we should be good. * libguile/vm-engine.c (VM_HANDLE_INTERRUPTS): Inline the async_tick business.
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/* classes: h_files */
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#ifndef SCM_ASYNC_H
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#define SCM_ASYNC_H
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/* Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2008, 2009, 2011
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* 2014 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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#include "libguile/root.h"
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#include "libguile/threads.h"
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SCM_API void scm_async_tick (void);
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SCM_API void scm_switch (void);
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SCM_API SCM scm_system_async_mark (SCM a);
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SCM_API SCM scm_system_async_mark_for_thread (SCM a, SCM thread);
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SCM_INTERNAL int scm_i_setup_sleep (scm_i_thread *,
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SCM obj, scm_i_pthread_mutex_t *m,
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int fd);
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SCM_INTERNAL void scm_i_reset_sleep (scm_i_thread *);
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SCM_API SCM scm_noop (SCM args);
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SCM_API SCM scm_call_with_blocked_asyncs (SCM proc);
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SCM_API SCM scm_call_with_unblocked_asyncs (SCM proc);
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SCM_API void *scm_c_call_with_blocked_asyncs (void *(*p) (void *d), void *d);
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SCM_API void *scm_c_call_with_unblocked_asyncs (void *(*p) (void *d), void *d);
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SCM_API void scm_dynwind_block_asyncs (void);
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SCM_API void scm_dynwind_unblock_asyncs (void);
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/* Critical sections */
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/* XXX - every critical section needs to be examined whether the
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requirements for SCM_CRITICAL_SECTION_START/END are fulfilled. See
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the manual.
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*/
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/* Defined in threads.c. */
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SCM_INTERNAL scm_i_pthread_mutex_t scm_i_critical_section_mutex;
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SCM_API void scm_critical_section_start (void);
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SCM_API void scm_critical_section_end (void);
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#ifdef BUILDING_LIBGUILE
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# define SCM_CRITICAL_SECTION_START \
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do { \
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scm_i_pthread_mutex_lock (&scm_i_critical_section_mutex); \
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SCM_I_CURRENT_THREAD->block_asyncs++; \
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SCM_I_CURRENT_THREAD->critical_section_level++; \
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} while (0)
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# define SCM_CRITICAL_SECTION_END \
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do { \
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SCM_I_CURRENT_THREAD->critical_section_level--; \
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SCM_I_CURRENT_THREAD->block_asyncs--; \
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scm_i_pthread_mutex_unlock (&scm_i_critical_section_mutex); \
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scm_async_tick (); \
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} while (0)
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# define scm_i_pthread_mutex_lock_block_asyncs(m) \
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do \
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{ \
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SCM_I_CURRENT_THREAD->block_asyncs++; \
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scm_i_pthread_mutex_lock (m); \
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} \
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while (0)
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# define scm_i_pthread_mutex_unlock_unblock_asyncs(m) \
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do \
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{ \
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scm_i_pthread_mutex_unlock (m); \
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SCM_I_CURRENT_THREAD->block_asyncs--; \
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} \
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while (0)
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#else /* !BUILDING_LIBGUILE */
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# define SCM_CRITICAL_SECTION_START scm_critical_section_start ()
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# define SCM_CRITICAL_SECTION_END scm_critical_section_end ()
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#endif /* !BUILDING_LIBGUILE */
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SCM_INTERNAL void scm_init_async (void);
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#endif /* SCM_ASYNC_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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