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guile/libguile/threads.h
Andy Wingo 552960b3e2 Move struct scm_thread definition to private header
Allows us to inline the "struct scm_dynamic_state", avoiding an untagged
traced allocation.

* libguile/threads-internal.h: New file.
* libguile/Makefile.am (noinst_HEADERS): Add new file.

Adapt all users, notably of SCM_I_CURRENT_THREAD and scm_i_misc_mutex.
2025-06-25 12:55:18 +02:00

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#ifndef SCM_THREADS_H
#define SCM_THREADS_H
/* Copyright 1996-1998,2000-2004,2006-2009,2011-2014,2018-2019,2025
Free Software Foundation, Inc.
This file is part of Guile.
Guile 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 3 of the License, or
(at your option) any later version.
Guile 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 Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include "libguile/procs.h"
#include "libguile/throw.h"
#include "libguile/dynstack.h"
#include "libguile/iselect.h"
#include "libguile/vm.h"
#if SCM_USE_PTHREAD_THREADS
#include "libguile/pthread-threads.h"
#endif
#if SCM_USE_NULL_THREADS
#include "libguile/null-threads.h"
#endif
struct scm_thread;
struct scm_thread_wake_data;
static inline SCM
scm_thread_handle (struct scm_thread *thread)
{
return SCM_PACK_POINTER (thread);
}
#define SCM_I_IS_THREAD(obj) SCM_HAS_TYP7 ((obj), scm_tc7_thread)
#define SCM_I_THREAD_DATA(x) ((scm_thread *) SCM_UNPACK_POINTER (x))
#define SCM_VALIDATE_THREAD(pos, a) \
SCM_ASSERT_TYPE (SCM_I_IS_THREAD (a), (a), (pos), FUNC_NAME, "thread")
SCM_API SCM scm_spawn_thread (scm_t_catch_body body, void *body_data,
scm_t_catch_handler handler, void *handler_data);
SCM_API void *scm_without_guile (void *(*func)(void *), void *data);
SCM_API void *scm_with_guile (void *(*func)(void *), void *data);
SCM_API SCM scm_call_with_new_thread (SCM thunk, SCM handler);
SCM_API SCM scm_yield (void);
SCM_API SCM scm_cancel_thread (SCM t);
SCM_API SCM scm_join_thread (SCM t);
SCM_API SCM scm_join_thread_timed (SCM t, SCM timeout, SCM timeoutval);
SCM_API SCM scm_thread_p (SCM t);
SCM_API SCM scm_make_mutex (void);
SCM_API SCM scm_make_recursive_mutex (void);
SCM_API SCM scm_make_mutex_with_kind (SCM kind);
SCM_API SCM scm_lock_mutex (SCM m);
SCM_API SCM scm_timed_lock_mutex (SCM m, SCM timeout);
SCM_API void scm_dynwind_lock_mutex (SCM mutex);
SCM_API SCM scm_try_mutex (SCM m);
SCM_API SCM scm_unlock_mutex (SCM m);
SCM_API SCM scm_mutex_p (SCM o);
SCM_API SCM scm_mutex_locked_p (SCM m);
SCM_API SCM scm_mutex_owner (SCM m);
SCM_API SCM scm_mutex_level (SCM m);
SCM_API SCM scm_make_condition_variable (void);
SCM_API SCM scm_wait_condition_variable (SCM cond, SCM mutex);
SCM_API SCM scm_timed_wait_condition_variable (SCM cond, SCM mutex,
SCM abstime);
SCM_API SCM scm_signal_condition_variable (SCM cond);
SCM_API SCM scm_broadcast_condition_variable (SCM cond);
SCM_API SCM scm_condition_variable_p (SCM o);
SCM_API SCM scm_current_thread (void);
SCM_API SCM scm_all_threads (void);
SCM_API int scm_c_thread_exited_p (SCM thread);
SCM_API SCM scm_thread_exited_p (SCM thread);
/* Convenience functions for working with the pthread API in guile
mode.
*/
#if SCM_USE_PTHREAD_THREADS
SCM_API int scm_pthread_mutex_lock (pthread_mutex_t *mutex);
SCM_API void scm_dynwind_pthread_mutex_lock (pthread_mutex_t *mutex);
SCM_API int scm_pthread_cond_wait (pthread_cond_t *cond,
pthread_mutex_t *mutex);
SCM_API int scm_pthread_cond_timedwait (pthread_cond_t *cond,
pthread_mutex_t *mutex,
const scm_t_timespec *abstime);
#endif
/* More convenience functions.
*/
SCM_API unsigned int scm_std_sleep (unsigned int);
SCM_API unsigned long scm_std_usleep (unsigned long);
SCM_API SCM scm_total_processor_count (void);
SCM_API SCM scm_current_processor_count (void);
#endif /* SCM_THREADS_H */