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3e414c302f
* benchmark-suite/benchmarks/subr.bm (hook1, hook3): New variables.
("subr invocation")("generic subr with rest arg", "generic subr with
rest arg and 3+ parameters"): New benchmarks.
("subr application")("generic subr with rest arg", "generic subr with
rest arg and 3+ parameters"): New benchmarks.
66 lines
2.3 KiB
Scheme
66 lines
2.3 KiB
Scheme
;;; subr.bm --- Measure the subr invocation cost. -*- Scheme -*-
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;;;
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;;; Copyright (C) 2009 Free Software Foundation, Inc.
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;;;
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;;; This program is free software; you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 2, or (at your option)
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;;; any later version.
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;;;
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with this software; see the file COPYING. If not, write to
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;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;;; Boston, MA 02110-1301 USA
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(define-module (benchmarks subrs)
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:use-module (benchmark-suite lib))
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(define hook1 (make-hook 1))
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(define hook3 (make-hook 3))
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(with-benchmark-prefix "subr invocation"
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(benchmark "simple subr" 700000
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;; 1 required argument, 0 optional arguments, no rest.
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(1+ 0))
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(benchmark "generic subr" 700000
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;; 2 required arguments, 4 optional arguments, no rest.
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;; In Guile 1.8 and earlier, such subrs are implemented as "compiled
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;; closures" (cclos). There, when a cclo/gsubr is called, the evaluator
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;; goes through `SCM_APPLY ()' and conses the arguments, which is more
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;; costly than the invocation of a "simple subr".
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(string= "foo" "bar"))
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(benchmark "generic subr with rest arg" 700000
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;; 1 required argument, 0 optional arguments, 1 rest.
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(run-hook hook1 1))
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(benchmark "generic subr with rest arg and 3+ parameters" 700000
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;; 1 required argument, 0 optional arguments, 1 rest.
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;; The evaluator considers calls with 3 and more parameters as a general
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;; form and always stores the arguments into a list.
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(run-hook hook3 1 2 3)))
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(with-benchmark-prefix "subr application"
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(benchmark "simple subr" 700000
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(apply 1+ '(0)))
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(benchmark "generic subr" 700000
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(apply string= "foo" '("bar")))
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(benchmark "generic subr with rest arg" 700000
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(apply run-hook hook1 '(1)))
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(benchmark "generic subr with rest arg and 3+ parameters" 700000
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(run-hook hook3 1 2 '(3))))
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