\f
;;;; system calls that deal with signals
-#!-sb-fluid (declaim (inline real-unix-kill))
-(sb!alien:define-alien-routine ("kill" real-unix-kill) sb!c-call:int
- (pid sb!c-call:int)
- (signal sb!c-call: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)))
-
-#!-sb-fluid (declaim (inline real-unix-killpg))
-(sb!alien:define-alien-routine ("killpg" real-unix-killpg) sb!c-call:int
- (pgrp sb!c-call:int)
- (signal sb!c-call:int))
+;;; should be a valid signal number
+#!-sb-fluid (declaim (inline real-unix-kill))
+(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 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)))
+;;; PGRP. SIGNAL should be a valid signal number
+#!-sb-fluid (declaim (inline real-unix-killpg))
+(sb!alien:define-alien-routine ("killpg" unix-killpg) sb!alien:int
+ (pgrp sb!alien:int)
+ (signal sb!alien:int))
-;;; 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.)
-(sb!alien:define-alien-routine ("sigsetmask" unix-sigsetmask)
- sb!c-call:unsigned-long
- (mask sb!c-call: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!c-call:unsigned-long
- (signal sb!c-call:int)
- (handler sb!c-call:unsigned-long))
-\f
+ sb!alien:unsigned-long
+ (signal sb!alien:int)
+ (handler sb!alien:unsigned-long))
+
;;;; 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))
+ (/show0 "enable-interrupt")
(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)
+ #!+sb-thread
+ (let ((foreground-thread (sb!thread::foreground-thread)))
+ (if (eql foreground-thread (sb!thread:current-thread-id))
+ (apply #'%break 'sigint format-string format-arguments)
+ (sb!thread:interrupt-thread
+ foreground-thread
+ (lambda () (apply #'%break 'sigint format-string format-arguments)))))
+ #!-sb-thread
(apply #'%break 'sigint format-string format-arguments))
(eval-when (:compile-toplevel :execute)
`(defun ,name (signal info context)
(declare (ignore signal info))
(declare (type system-area-pointer context))
- (/show "in Lisp-level signal handler" (sap-int context))
+ (/show "in Lisp-level signal handler" ,(symbol-name name) (sap-int context))
(,function ,(concatenate 'simple-string what " at #X~X")
(with-alien ((context (* os-context-t) context))
(sap-int (sb!vm:context-pc context)))))))
#!-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))
- (throw 'sb!impl::toplevel-catcher nil))
+ (throw 'toplevel-catcher nil))
(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.
;;; CMU CL comment:
;;; Magically converted by the compiler into a break instruction.
-(defun do-pending-interrupt ()
- (do-pending-interrupt))
+(defun receive-pending-interrupt ()
+ (receive-pending-interrupt))
\f
;;; stale code which I'm insufficiently motivated to test -- WHN 19990714
#|
projects / sbcl.git / blobdiff