(in-package "SB!UNIX")
(defmacro with-interrupt-bindings (&body body)
- (with-unique-names (empty)
- `(let*
- ;; KLUDGE: Whatever is on the PCL stacks before the interrupt
- ;; handler runs doesn't really matter, since we're not on the
- ;; same call stack, really -- and if we don't bind these (esp.
- ;; the cache one) we can get a bogus metacircle if an interrupt
- ;; handler calls a GF that was being computed when the interrupt
- ;; hit.
- ((sb!pcl::*cache-miss-values-stack* nil)
- (sb!pcl::*dfun-miss-gfs-on-stack* nil)
- ;; Unless we do this, ADJUST-ARRAY and SORT would need to
- ;; disable interrupts.
- (,empty (vector))
- (sb!impl::*zap-array-data-temp* ,empty)
- (sb!impl::*merge-sort-temp-vector* ,empty))
- ,@body)))
+ `(let*
+ ;; KLUDGE: Whatever is on the PCL stacks before the interrupt
+ ;; handler runs doesn't really matter, since we're not on the
+ ;; same call stack, really -- and if we don't bind these (esp.
+ ;; the cache one) we can get a bogus metacircle if an interrupt
+ ;; handler calls a GF that was being computed when the interrupt
+ ;; hit.
+ ((sb!pcl::*cache-miss-values-stack* nil)
+ (sb!pcl::*dfun-miss-gfs-on-stack* nil))
+ ,@body))
;;; Evaluate CLEANUP-FORMS iff PROTECTED-FORM does a non-local exit.
(defmacro nlx-protect (protected-form &rest cleanup-froms)
;; mechanism there are no extra frames on the stack from a
;; previous signal handler when the next signal is delivered
;; provided there is no WITH-INTERRUPTS.
- (let ((*unblock-deferrables-on-enabling-interrupts-p* t))
+ (let ((*unblock-deferrables-on-enabling-interrupts-p* t)
+ (sb!debug:*stack-top-hint* (or sb!debug:*stack-top-hint* 'invoke-interruption)))
(with-interrupt-bindings
- (let ((sb!debug:*stack-top-hint*
- (nth-value 1 (sb!kernel:find-interrupted-name-and-frame))))
+ (sb!thread::without-thread-waiting-for (:already-without-interrupts t)
(allow-with-interrupts
(nlx-protect (funcall function)
;; We've been running with deferrables
(flet ((interrupt-it ()
(with-alien ((context (* os-context-t) context))
(with-interrupts
- (%break 'sigint 'interactive-interrupt
- :context context
- :address (sap-int (sb!vm:context-pc context)))))))
+ (let ((int (make-condition 'interactive-interrupt
+ :context context
+ :address (sap-int (sb!vm:context-pc context)))))
+ ;; First SIGNAL, so that handlers can run.
+ (signal int)
+ ;; Then enter the debugger like BREAK.
+ (%break 'sigint int))))))
(sb!thread:interrupt-thread (sb!thread::foreground-thread)
#'interrupt-it)))
(defun sigterm-handler (signal code context)
(declare (ignore signal code context))
- (sb!thread::terminate-session)
- (sb!ext:quit))
+ (sb!ext:exit))
;;; SIGPIPE is not used in SBCL for its original purpose, instead it's
;;; for signalling a thread that it should look at its interruption
(declare (ignore signal code context))
(sb!thread::run-interruption))
+;;; the handler for SIGCHLD signals for RUN-PROGRAM
+(defun sigchld-handler (signal code context)
+ (declare (ignore signal code context))
+ (sb!impl::get-processes-status-changes))
+
(defun sb!kernel:signal-cold-init-or-reinit ()
#!+sb-doc
"Enable all the default signals that Lisp knows how to deal with."
(enable-interrupt sigsys #'sigsys-handler)
(enable-interrupt sigalrm #'sigalrm-handler)
(enable-interrupt sigpipe #'sigpipe-handler)
+ (enable-interrupt sigchld #'sigchld-handler)
#!+hpux (ignore-interrupt sigxcpu)
(unblock-gc-signals)
(unblock-deferrable-signals)