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* scmsigs.h, async.h: updated.

Browse source 
* _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.
This commit is contained in:
Gary Houston 1997-05-31 19:02:38 +00:00
parent 19da35d025
commit e1a191a8ca
18 changed files with 557 additions and 634 deletions
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13
libguile/async.h
View file

@ -2,7 +2,7 @@
#ifndef ASYNCH
#define ASYNCH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997 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
@ -47,6 +47,16 @@
#include "libguile/__scm.h"
#define SCM_ASYNCP(X) (scm_tc16_async == SCM_GCTYP16 (X))
#define SCM_ASYNC(X) ((struct scm_async *)SCM_CDR (X))
struct scm_async
{
int got_it; /* needs to be delivered? */
SCM thunk; /* the handler. */
};
extern unsigned int scm_mask_ints;
@ -63,7 +73,6 @@ extern SCM scm_run_asyncs SCM_P ((SCM list_of_a));
extern SCM scm_noop SCM_P ((SCM args));
extern SCM scm_set_tick_rate SCM_P ((SCM n));
extern SCM scm_set_switch_rate SCM_P ((SCM n));
extern SCM scm_take_signal SCM_P ((int n));
extern SCM scm_unmask_signals SCM_P ((void));
extern SCM scm_mask_signals SCM_P ((void));
extern void scm_init_async SCM_P ((void));