(in-package "SB!UNIX")
-(file-comment
- "$Header$")
-
;;; These should probably be somewhere, but I don't know where.
(defconstant sig_dfl 0)
(defconstant sig_ign 1)
;;;; system calls that deal with signals
#!-sb-fluid (declaim (inline real-unix-kill))
-(sb!alien:def-alien-routine ("kill" real-unix-kill) sb!c-call:int
- (pid sb!c-call:int)
- (signal sb!c-call:int))
+(sb!alien:define-alien-routine ("kill" real-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)
- #!+sb-doc
- "Unix-kill sends 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."
(real-unix-kill pid (unix-signal-number signal)))
#!-sb-fluid (declaim (inline real-unix-killpg))
-(sb!alien:def-alien-routine ("killpg" real-unix-killpg) sb!c-call:int
- (pgrp sb!c-call:int)
- (signal sb!c-call:int))
+(sb!alien:define-alien-routine ("killpg" real-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)
- #!+sb-doc
- "Unix-killpg sends 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."
(real-unix-killpg pgrp (unix-signal-number signal)))
-(sb!alien:def-alien-routine ("sigblock" unix-sigblock) sb!c-call:unsigned-long
- #!+sb-doc
- "Unix-sigblock cause the signals specified in mask to be
- added to the set of signals currently being blocked from
- delivery. The macro sigmask is provided to create masks."
- (mask sb!c-call:unsigned-long))
-
-(sb!alien:def-alien-routine ("sigpause" unix-sigpause) sb!c-call:void
- #!+sb-doc
- "Unix-sigpause sets the set of masked signals to its argument
- and then waits for a signal to arrive, restoring the previous
- mask upon its return."
- (mask sb!c-call:unsigned-long))
-
-(sb!alien:def-alien-routine ("sigsetmask" unix-sigsetmask)
- sb!c-call:unsigned-long
- #!+sb-doc
- "Unix-sigsetmask sets the current set of masked signals (those
- begin blocked from delivery) to the argument. The macro sigmask
- can be used to create the mask. The previous value of the signal
- mask is returned."
- (mask sb!c-call:unsigned-long))
+;;; Set 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))
\f
;;;; C routines that actually do all the work of establishing signal handlers
-(sb!alien:def-alien-routine ("install_handler" install-handler)
- sb!c-call:unsigned-long
- (signal sb!c-call:int)
- (handler sb!c-call:unsigned-long))
+(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 handler)
+(defun enable-interrupt (signal-designator handler)
(declare (type (or function (member :default :ignore)) handler))
(without-gcing
- (let ((result (install-handler (unix-signal-number signal)
+ (let ((result (install-handler (unix-signal-number signal-designator)
(case handler
(:default sig_dfl)
(:ignore sig_ign)
;;;;
;;;; Most of these just call ERROR to report the presence of the signal.
+;;; 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 --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))
+
(eval-when (:compile-toplevel :execute)
(sb!xc:defmacro define-signal-handler (name
what
(with-alien ((context (* os-context-t) context))
(sap-int (sb!vm:context-pc context)))))))
-(define-signal-handler sigint-handler "interrupted" break)
+(define-signal-handler sigint-handler "interrupted" sigint-%break)
(define-signal-handler sigill-handler "illegal instruction")
(define-signal-handler sigtrap-handler "breakpoint/trap")
(define-signal-handler sigiot-handler "SIGIOT")
(defun sigquit-handler (signal code context)
(declare (ignore signal code context))
- (throw 'sb!impl::top-level-catcher nil))
+ (throw 'sb!impl::toplevel-catcher nil))
(defun sb!kernel:signal-cold-init-or-reinit ()
#!+sb-doc
(enable-interrupt :sigsys #'sigsys-handler)
(enable-interrupt :sigpipe #'sigpipe-handler)
(enable-interrupt :sigalrm #'sigalrm-handler)
- nil)
+ (values))
+\f
+;;;; etc.
+
+;;; CMU CL comment:
+;;; Magically converted by the compiler into a break instruction.
+(defun receive-pending-interrupt ()
+ (receive-pending-interrupt))
\f
;;; stale code which I'm insufficiently motivated to test -- WHN 19990714
#|