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-rw-r--r--libguile/coop-defs.h221
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diff --git a/libguile/coop-defs.h b/libguile/coop-defs.h
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--- a/libguile/coop-defs.h
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-/* classes: h_files */
-
-#ifndef SCM_COOP_DEFS_H
-#define SCM_COOP_DEFS_H
-
-/* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002, 2006 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/iselect.h"
-
-#if SCM_HAVE_WINSOCK2_H
-# include <winsock2.h>
-#endif
-
-#ifdef GUILE_PTHREAD_COMPAT
-#include <pthread.h>
-#endif
-
-/* This file is included by threads.h, which, in turn, is included by
- libguile.h while coop-threads.h only is included by
- coop-threads.c. */
-
-/* The coop_t struct must be declared here, since macros in this file
- refer to the data member. */
-
-/* The notion of a thread is merged with the notion of a queue.
- Thread stuff: thread status (sp) and stuff to use during
- (re)initialization. Queue stuff: next thread in the queue
- (next). */
-
-struct qt_t;
-
-typedef struct coop_t {
- struct qt_t *sp; /* QuickThreads handle. */
- void *sto; /* `malloc'-allocated stack. */
-
- struct coop_t *next; /* Next thread in the queue. */
-
- struct coop_t *all_next;
- struct coop_t *all_prev;
-
- void *data; /* Thread local data */
- void **specific; /* Data associated with keys */
- int n_keys; /* Upper limit for keys on this thread */
-
- void *base; /* Base of stack */
- void *top; /* Top of stack */
-
- void *joining; /* A queue of threads waiting to join this
- thread */
-
- SCM handle; /* SCM handle, protected via scm_all_threads. */
-
- int nfds;
- SELECT_TYPE *readfds;
- SELECT_TYPE *writefds;
- SELECT_TYPE *exceptfds;
- int timeoutp;
- struct timeval wakeup_time; /* Time to stop sleeping */
- int _errno;
- int retval;
-
-#ifdef GUILE_PTHREAD_COMPAT
- pthread_t dummy_thread;
- pthread_mutex_t dummy_mutex;
-#endif
-} coop_t;
-
-/* A queue is a circular list of threads. The queue head is a
- designated list element. If this is a uniprocessor-only
- implementation we can store the `main' thread in this, but in a
- multiprocessor there are several `heavy' threads but only one run
- queue. A fancier implementation might have private run queues,
- which would lead to a simpler (trivial) implementation */
-
-typedef struct coop_q_t {
- coop_t t;
- coop_t *tail;
-} coop_q_t;
-
-/* A Mutex variable is made up of a owner thread, and a queue of threads
- waiting on the mutex */
-
-typedef struct coop_m {
- coop_t *owner; /* Mutex owner */
- int level; /* for recursive locks. */
- coop_q_t waiting; /* Queue of waiting threads */
-} coop_m;
-
-typedef int coop_mattr;
-
-SCM_API int coop_mutex_init (coop_m*);
-SCM_API int coop_new_mutex_init (coop_m*, coop_mattr*);
-SCM_API int coop_mutex_lock (coop_m*);
-SCM_API int coop_mutex_trylock (coop_m*);
-SCM_API int coop_mutex_unlock (coop_m*);
-SCM_API int coop_mutex_destroy (coop_m*);
-
-/* A Condition variable is made up of a list of threads waiting on the
- condition. */
-
-typedef struct coop_c {
- coop_q_t waiting; /* Queue of waiting threads */
-} coop_c;
-
-typedef int coop_cattr;
-
-SCM_API int coop_condition_variable_init (coop_c*);
-SCM_API int coop_new_condition_variable_init (coop_c*, coop_cattr*);
-SCM_API int coop_condition_variable_wait_mutex (coop_c*, coop_m*);
-SCM_API int coop_condition_variable_timed_wait_mutex (coop_c*,
- coop_m*,
- const scm_t_timespec *abstime);
-SCM_API int coop_condition_variable_signal (coop_c*);
-SCM_API int coop_condition_variable_broadcast (coop_c*);
-SCM_API int coop_condition_variable_destroy (coop_c*);
-
-typedef int coop_k;
-
-typedef coop_k scm_t_key;
-
-SCM_API int coop_key_create (coop_k *keyp, void (*destruktor) (void *value));
-SCM_API int coop_setspecific (coop_k key, const void *value);
-SCM_API void *coop_getspecific (coop_k key);
-SCM_API int coop_key_delete (coop_k);
-#define scm_key_create coop_key_create
-#define scm_setspecific coop_setspecific
-#define scm_getspecific coop_getspecific
-#define scm_key_delete coop_key_delete
-
-SCM_API coop_t *coop_global_curr; /* Currently-executing thread. */
-
-SCM_API void coop_join (coop_t *t);
-SCM_API void coop_yield (void);
-
-SCM_API size_t scm_switch_counter;
-SCM_API size_t scm_thread_count;
-
-
-/* Some iselect functions. */
-
-/* I'm not sure whether these three declarations should be here.
- They're really defined in iselect.c, so you'd think they'd go in
- iselect.h, but they use coop_t, defined above, which uses things
- defined in iselect.h. Basically, we're making at best a flailing
- (and failing) attempt at modularity here, and I don't have time to
- rethink this at the moment. This code awaits a Hero. --JimB
- */
-SCM_API void coop_timeout_qinsert (coop_q_t *, coop_t *);
-SCM_API coop_t *coop_next_runnable_thread (void);
-SCM_API coop_t *coop_wait_for_runnable_thread_now (struct timeval *);
-SCM_API coop_t *coop_wait_for_runnable_thread (void);
-
-
-
-
-/* Cooperative threads don't need to have these defined */
-
-#define SCM_CRITICAL_SECTION_START
-#define SCM_CRITICAL_SECTION_END
-
-
-
-#define SCM_NO_CRITICAL_SECTION_OWNER 0
-#define SCM_THREAD_SWITCH_COUNT 50 /* was 10 /mdj */
-
-
-
-#if 0
-#define SCM_THREAD_SWITCHING_CODE \
-do { \
- if (scm_thread_count > 1) \
- coop_yield(); \
-} while (0)
-
-#else
-#define SCM_THREAD_SWITCHING_CODE \
-do { \
- if (scm_thread_count > 1) \
- { \
- scm_switch_counter--; \
- if (scm_switch_counter == 0) \
- { \
- scm_switch_counter = SCM_THREAD_SWITCH_COUNT; \
- coop_yield(); \
- } \
- } \
-} while (0)
-
-#endif
-
-/* For pthreads, this is a value associated with a specific key.
- * For coop, we use a special field for increased efficiency.
- */
-#define SCM_THREAD_LOCAL_DATA (coop_global_curr->data)
-#define SCM_SET_THREAD_LOCAL_DATA(ptr) (coop_global_curr->data = (ptr))
-
-#endif /* SCM_COOP_DEFS_H */
-
-/*
- Local Variables:
- c-file-style: "gnu"
- End:
-*/