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Diffstat (limited to 'libguile/threads.c')
-rw-r--r-- | libguile/threads.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/libguile/threads.c b/libguile/threads.c new file mode 100644 index 000000000..f1c826f2a --- /dev/null +++ b/libguile/threads.c @@ -0,0 +1,161 @@ +/* Copyright (C) 1995, 1996 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, the Free Software Foundation gives permission + * for additional uses of the text contained in its release of GUILE. + * + * The exception is that, if you link the GUILE library with other files + * to produce an executable, this does not by itself cause the + * resulting executable to be covered by the GNU General Public License. + * Your use of that executable is in no way restricted on account of + * linking the GUILE library code into it. + * + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + * + * This exception applies only to the code released by the + * Free Software Foundation under the name GUILE. If you copy + * code from other Free Software Foundation releases into a copy of + * GUILE, as the General Public License permits, the exception does + * not apply to the code that you add in this way. To avoid misleading + * anyone as to the status of such modified files, you must delete + * this exception notice from them. + * + * If you write modifications of your own for GUILE, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + + +#include <stdio.h> +#include "_scm.h" +#include "dynwind.h" +#include "smob.h" + +#include "threads.h" + + + +long scm_tc16_thread; + +long scm_tc16_mutex; + +long scm_tc16_condvar; + + +/* Scheme-visible thread functions. */ + +#ifdef USE_COOP_THREADS +SCM_PROC(s_single_thread_p, "single-active-thread?", 0, 0, 0, scm_single_thread_p); +#endif +SCM_PROC(s_yield, "yield", 0, 0, 0, scm_yield); +SCM_PROC(s_call_with_new_thread, "call-with-new-thread", 0, 0, 1, scm_call_with_new_thread); +SCM_PROC(s_join_thread, "join-thread", 1, 0, 0, scm_join_thread); +SCM_PROC(s_make_mutex, "make-mutex", 0, 0, 0, scm_make_mutex); +SCM_PROC(s_lock_mutex, "lock-mutex", 1, 0, 0, scm_lock_mutex); +SCM_PROC(s_unlock_mutex, "unlock-mutex", 1, 0, 0, scm_unlock_mutex); +SCM_PROC(s_make_condition_variable, "make-condition-variable", 0, 0, 0, scm_make_condition_variable); +SCM_PROC(s_wait_condition_variable, "wait-condition-variable", 2, 0, 0, scm_wait_condition_variable); +SCM_PROC(s_signal_condition_variable, "signal-condition-variable", 1, 0, 0, scm_signal_condition_variable); + + + +#ifdef USE_MIT_PTHREADS +#include "mit-pthreads.c" +#endif + +#ifdef USE_COOP_THREADS +#include "coop-threads.c" +#endif + +static int +print_thread (exp, port, pstate) + SCM exp; + SCM port; + scm_print_state *pstate; +{ + scm_gen_puts (scm_regular_string, "#<thread ", port); + scm_intprint (SCM_CDR (exp), 16, port); + scm_gen_putc ('>', port); + return 1; +} + +static scm_smobfuns thread_smob = +{ + scm_mark0, + scm_threads_free_thread, + print_thread, + 0 +}; + +static int +print_mutex (exp, port, pstate) + SCM exp; + SCM port; + scm_print_state *pstate; +{ + scm_gen_puts (scm_regular_string, "#<mutex ", port); + scm_intprint (SCM_CDR (exp), 16, port); + scm_gen_putc ('>', port); + return 1; +} + +static scm_smobfuns mutex_smob = +{ + scm_mark0, + scm_threads_free_mutex, + print_mutex, + 0 +}; + +static int +print_condvar (exp, port, pstate) + SCM exp; + SCM port; + scm_print_state *pstate; +{ + scm_gen_puts (scm_regular_string, "#<condition-variable ", port); + scm_intprint (SCM_CDR (exp), 16, port); + scm_gen_putc ('>', port); + return 1; +} + +static scm_smobfuns condvar_smob = +{ + scm_mark0, + scm_threads_free_condvar, + print_condvar, + 0 +}; + + + +#ifdef __STDC__ +void +scm_init_threads (SCM_STACKITEM *i) +#else +void +scm_init_threads (i) + SCM_STACKITEM *i; +#endif +{ + scm_tc16_thread = scm_newsmob (&thread_smob); + scm_tc16_mutex = scm_newsmob (&mutex_smob); + scm_tc16_condvar = scm_newsmob (&condvar_smob); +#include "threads.x" + /* Initialize implementation specific details of the threads support */ + scm_threads_init (i); +} |