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e1a191a8ca
* _scm.h: if HAVE_RESTARTS is defined then don't use a SYSCALL loop. * posix.c (scm_uname): interpret only negative values as an error. Solaris normally returns a positive value. * script.c (scm_compile_shell_switches): if we are not going into an interactive repl, set scm_mask_ints to zero so that asyncs can run. * simpos.c (scm_system): don't ignore/unignore signals around the "system" call. * posix.c (scm_open_pipe): don't ignore/unignore signals around the "popen" call. * init.c (scm_boot_guile_1): don't call scm_init_signals, it's done in boot-9.scm instead. * scmsigs.c, async.c: Major rewriting of signal handling code. (scm_sigaction): new procedure. (scm_sleep): don't wrap sleep in SCM_SYSCALL, it would mess up the timing. (scm_raise): return unspecified, throw error on failure. * boot-9.scm: signal-handler, alarm-thunk: removed. don't define ticks-interrupt etc. top-repl: install signal handlers for SIGINT, SIGFPE, SIGSEGV, SIGBUS during call to scm-style-repl. * acconfig.h: mention HAVE_RESTARTS. * configure.in: check for sigaction and restartable system calls.
80 lines
3 KiB
C
80 lines
3 KiB
C
/* classes: h_files */
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#ifndef ASYNCH
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#define ASYNCH
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/* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#define SCM_ASYNCP(X) (scm_tc16_async == SCM_GCTYP16 (X))
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#define SCM_ASYNC(X) ((struct scm_async *)SCM_CDR (X))
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struct scm_async
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{
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int got_it; /* needs to be delivered? */
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SCM thunk; /* the handler. */
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};
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extern unsigned int scm_mask_ints;
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extern SCM scm_gc_async;
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extern void scm_async_click SCM_P ((void));
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extern void scm_switch SCM_P ((void));
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extern SCM scm_async SCM_P ((SCM thunk));
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extern SCM scm_system_async SCM_P ((SCM thunk));
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extern SCM scm_async_mark SCM_P ((SCM a));
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extern SCM scm_system_async_mark SCM_P ((SCM a));
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extern SCM scm_run_asyncs SCM_P ((SCM list_of_a));
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extern SCM scm_noop SCM_P ((SCM args));
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extern SCM scm_set_tick_rate SCM_P ((SCM n));
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extern SCM scm_set_switch_rate SCM_P ((SCM n));
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extern SCM scm_unmask_signals SCM_P ((void));
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extern SCM scm_mask_signals SCM_P ((void));
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extern void scm_init_async SCM_P ((void));
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#endif /* ASYNCH */
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