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core: start working with lparallel queues and background tasks

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This commit is contained in:
Helmut Merz 2025-02-15 12:05:21 +01:00
parent dc37f7778a
commit c61d3bcfd3
1 changed files with 29 additions and 12 deletions
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41
core/core.lisp
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@ -6,7 +6,8 @@
(:message :scopes/core/message)
(:shape :scopes/shape)
(:util :scopes/util)
(:alx :alexandria))
(:alx :alexandria)
(:q :lparallel.queue))
(:export #:action-spec #:define-actions
#:*root* #:default-setup #:actions
#:find-service #:run-services #:setup-services #:shutdown
@ -57,18 +58,35 @@
(defvar *root* nil)
;;; check / fix:
(defvar *quit-queue* (lparallel.queue:make-queue :fixed-capacity 1))
(defvar *quit-queue* (q:make-queue :fixed-capacity 1))
(defun quit-handler (sig)
(format t "~%quit-handler: got signal ~s~%" sig)
(lparallel.queue:push-queue sig))
(q:push-queue sig *quit-queue*))
(defclass base-context ()
((actions :accessor actions :initform nil)))
((actions :accessor actions :initform nil)))
(defclass context (base-context)
((config :reader config :initarg :config)
(name :reader name :initarg :name)
(services :reader services :initform (make-hash-table))))
((config :reader config :initarg :config)
(name :reader name :initarg :name)
(services :reader services :initform (make-hash-table))))
(defclass service (context)
((mailbox :reader mailbox :initform (lparallel.queue:make-queue))))
(defgeneric do-start (ctx)
(:method ((ctx context)))
(:method ((ctx service)) (do-listen ctx)))
(defgeneric do-listen (ctx)
(:method ((ctx service))
(do ((r (do-step ctx) (do-step ctx)))
((not r)))))
(defgeneric do-step (ctx)
(:method ((ctx service))
(let ((msg (q:pop-queue (mailbox ctx))))
(handle-message ctx msg))))
(defun default-setup (cfg &optional (cls 'context) &rest args &key &allow-other-keys)
(apply #'make-instance cls :config cfg :name (config:name cfg) args))
@ -79,9 +97,8 @@
(gethash name services))))
(defun setup-services (&optional (cfg config:*root*))
(setf *root* (make-instance 'context :config cfg))
(setf *root* (make-instance 'service :config cfg))
;(setf (trivial-signal:signal-handler :int) #'quit-handler)
;(setf (trivial-signal:signal-handler :term) #'quit-handler)
(dolist (c (reverse (config:children cfg)))
(add-service *root* c)))
@ -93,8 +110,8 @@
(unwind-protect
(progn
(setup-services cfg)
;(do-listen)
(lparallel.queue:pop-queue *quit-queue*))
(do-listen *root*))
;(q:pop-queue *quit-queue*))
(shutdown)))
(defun add-action (ctx pat hdlr)
@ -112,7 +129,7 @@
(dolist (a (config:actions cfg))
(add-action child (car a) (cadr a)))
(setf (gethash (config:name cfg) services) child)
;(do-start child)
(do-start child)
))))
(defgeneric send (rcvr msg)