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authorGary Houston <ghouston@arglist.com>1997-05-31 19:02:38 +0000
committerGary Houston <ghouston@arglist.com>1997-05-31 19:02:38 +0000
commite1a191a8ca07dd14b956f6e349044d3dabb424c5 (patch)
treec69be678321a8190bfcf46f1d11fca404c56ee40 /libguile/async.h
parent19da35d025dbc924ca37e77a8c8d97864f3ef58c (diff)
downloadguile-e1a191a8ca07dd14b956f6e349044d3dabb424c5.tar.gz
* scmsigs.h, async.h: updated.
* _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.
Diffstat (limited to 'libguile/async.h')
-rw-r--r--libguile/async.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/libguile/async.h b/libguile/async.h
index ffb7d9346..6f9458983 100644
--- a/libguile/async.h
+++ b/libguile/async.h
@@ -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
@@ -48,6 +48,16 @@
+#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;
extern SCM scm_gc_async;
@@ -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));