49 lines
1.2 KiB
Common Lisp
49 lines
1.2 KiB
Common Lisp
;;;; cl-scopes/util/async - utilities for asynchronous (concurrent / parallel) operations
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(defpackage :scopes/util/async
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(:use :common-lisp)
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(:local-nicknames (:lp :lparallel)
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(:lpq :lparallel.queue))
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(:export #:init #:finish #:make-ch #:make-mb #:rcv #:try-rcv #:snd
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#:submit-task #:receive-result #:try-receive-result))
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(in-package :scopes/util/async)
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;;;; general definitions (lparallel wrappers)
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(defun init ()
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(when (null lp:*kernel*)
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(format t "async:init ~a ~%"
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(setf lp:*kernel* (lp:make-kernel (serapeum:count-cpus))))))
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(defun finish ()
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(when lp:*kernel*
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(lp:end-kernel)))
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;;;; higher-level mailbox / task / channel combination
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(defclass mailbox ()
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((queue :reader queue :initform (lpq:make-queue))
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(channel :reader channel :initform (lp:make-channel))))
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(defun make-mb ()
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(make-instance 'mailbox))
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(defun rcv (mb)
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(lpq:pop-queue (queue mb)))
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(defun try-rcv (mb)
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(lpq:try-pop-queue (queue mb)))
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(defun snd (mb msg)
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(lpq:push-queue msg (queue mb)))
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(defun submit-task (mb job &rest args)
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(apply #'lp:submit-task (channel mb) job args))
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(defun receive-result (mb)
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(lp:receive-result (channel mb)))
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(defun try-receive-result (mb)
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(lp:try-receive-result (channel mb)))
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