\f
;;;; system calls that deal with signals
+;;; Send the signal SIGNAL to the process with process id PID. SIGNAL
+;;; should be a valid signal number
#!-sb-fluid (declaim (inline real-unix-kill))
-(sb!alien:define-alien-routine ("kill" real-unix-kill) sb!alien:int
+(sb!alien:define-alien-routine ("kill" unix-kill) sb!alien:int
(pid sb!alien:int)
(signal sb!alien:int))
-;;; Send the signal SIGNAL to the process with process id PID. SIGNAL
-;;; should be a valid signal number or a keyword of the standard UNIX
-;;; signal name.
-(defun unix-kill (pid signal)
- (real-unix-kill pid (unix-signal-number signal)))
-
+;;; Send the signal SIGNAL to the all the process in process group
+;;; PGRP. SIGNAL should be a valid signal number
#!-sb-fluid (declaim (inline real-unix-killpg))
-(sb!alien:define-alien-routine ("killpg" real-unix-killpg) sb!alien:int
+(sb!alien:define-alien-routine ("killpg" unix-killpg) sb!alien:int
(pgrp sb!alien:int)
(signal sb!alien:int))
-;;; Send the signal SIGNAL to the all the process in process group
-;;; PGRP. SIGNAL should be a valid signal number or a keyword of the
-;;; standard UNIX signal name.
-(defun unix-killpg (pgrp signal)
- (real-unix-killpg pgrp (unix-signal-number signal)))
-
-;;; Set the current set of masked signals (those being blocked from
+;;; Reset the current set of masked signals (those being blocked from
;;; delivery).
;;;
-;;; (Note: CMU CL had a SIGMASK operator to create masks, but since
-;;; SBCL only uses 0, we no longer support it. If you need it, you
-;;; can pull it out of the CMU CL sources, or the old SBCL sources;
-;;; but you might also consider doing things the SBCL way and moving
-;;; this kind of C-level work down to C wrapper functions.)
-#!-sunos
-(sb!alien:define-alien-routine ("sigsetmask" unix-sigsetmask)
- sb!alien:unsigned-long
- (mask sb!alien:unsigned-long))
+;;; (Note: CMU CL had a more general SIGSETMASK call and a SIGMASK
+;;; operator to create masks, but since we only ever reset to 0, we no
+;;; longer support it. If you need it, you can pull it out of the CMU
+;;; CL sources, or the old SBCL sources; but you might also consider
+;;; doing things the SBCL way and moving this kind of C-level work
+;;; down to C wrapper functions.)
+
+;;; When inappropriate build options are used, this also prints messages
+;;; listing the signals that were masked
+(sb!alien:define-alien-routine "reset_signal_mask" sb!alien:void)
\f
;;;; C routines that actually do all the work of establishing signal handlers
(sb!alien:define-alien-routine ("install_handler" install-handler)
sb!alien:unsigned-long
(signal sb!alien:int)
(handler sb!alien:unsigned-long))
-\f
+
;;;; interface to enabling and disabling signal handlers
-(defun enable-interrupt (signal-designator handler)
- (declare (type (or function (member :default :ignore)) handler))
+(defun enable-interrupt (signal handler)
+ (declare (type (or function fixnum (member :default :ignore)) handler))
(without-gcing
- (let ((result (install-handler (unix-signal-number signal-designator)
+ (let ((result (install-handler signal
(case handler
(:default sig_dfl)
(:ignore sig_ign)
handler))))))
(cond ((= result sig_dfl) :default)
((= result sig_ign) :ignore)
- (t (the function (sb!kernel:make-lisp-obj result)))))))
+ (t (the (or function fixnum) (sb!kernel:make-lisp-obj result)))))))
(defun default-interrupt (signal)
(enable-interrupt signal :default))
;;; SIGINT is handled like BREAK, except that ANSI BREAK ignores
;;; *DEBUGGER-HOOK*, but we want SIGINT's BREAK to respect it, so that
-;;; SIGINT in --noprogrammer mode will cleanly terminate the system
+;;; SIGINT in --disable-debugger mode will cleanly terminate the system
;;; (by respecting the *DEBUGGER-HOOK* established in that mode).
(defun sigint-%break (format-string &rest format-arguments)
(apply #'%break 'sigint format-string format-arguments))
#!-linux
(define-signal-handler sigsys-handler "bad argument to a system call")
(define-signal-handler sigpipe-handler "SIGPIPE")
-(define-signal-handler sigalrm-handler "SIGALRM")
+
+(defun sigalrm-handler (signal info context)
+ (declare (ignore signal info context))
+ (declare (type system-area-pointer context))
+ (cerror "Continue" 'sb!ext::timeout))
(defun sigquit-handler (signal code context)
(declare (ignore signal code context))
(defun sb!kernel:signal-cold-init-or-reinit ()
#!+sb-doc
"Enable all the default signals that Lisp knows how to deal with."
- (enable-interrupt :sigint #'sigint-handler)
- (enable-interrupt :sigquit #'sigquit-handler)
- (enable-interrupt :sigill #'sigill-handler)
- (enable-interrupt :sigtrap #'sigtrap-handler)
- (enable-interrupt :sigiot #'sigiot-handler)
+ (enable-interrupt sigint #'sigint-handler)
+ (enable-interrupt sigquit #'sigquit-handler)
+ (enable-interrupt sigill #'sigill-handler)
+ (enable-interrupt sigtrap #'sigtrap-handler)
+ (enable-interrupt sigiot #'sigiot-handler)
#!-linux
- (enable-interrupt :sigemt #'sigemt-handler)
- (enable-interrupt :sigfpe #'sb!vm:sigfpe-handler)
- (enable-interrupt :sigbus #'sigbus-handler)
- (enable-interrupt :sigsegv #'sigsegv-handler)
+ (enable-interrupt sigemt #'sigemt-handler)
+ (enable-interrupt sigfpe #'sb!vm:sigfpe-handler)
+ (enable-interrupt sigbus #'sigbus-handler)
+ (enable-interrupt sigsegv #'sigsegv-handler)
#!-linux
- (enable-interrupt :sigsys #'sigsys-handler)
- (enable-interrupt :sigpipe #'sigpipe-handler)
- (enable-interrupt :sigalrm #'sigalrm-handler)
+ (enable-interrupt sigsys #'sigsys-handler)
+ (enable-interrupt sigpipe #'sigpipe-handler)
+ (enable-interrupt sigalrm #'sigalrm-handler)
(values))
\f
;;;; etc.
projects / sbcl.git / blobdiff