scratch/elisp-benchmarks d0963279fec 16/54: * benchmarks/map-closure.el: Add new u-benchmark.

[Pip Cet]

branch: scratch/elisp-benchmarks
commit d0963279fec4274ec4d780a3f802416a43138b12
Author: Andrea Corallo <akrl@sdf.org>
Commit: Andrea Corallo <akrl@sdf.org>

    * benchmarks/map-closure.el: Add new u-benchmark.
---
 elisp-benchmarks/benchmarks/map-closure.el | 44 ++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/elisp-benchmarks/benchmarks/map-closure.el 
b/elisp-benchmarks/benchmarks/map-closure.el
new file mode 100644
index 00000000000..30fed05cc26
--- /dev/null
+++ b/elisp-benchmarks/benchmarks/map-closure.el
@@ -0,0 +1,44 @@
+;; -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Apply a local function capturing a variable into a closure on each
+;; element of list.
+
+(require 'cl-lib)
+
+(defvar elb-map-closure-len 50000)
+(defvar elb-map-closure-list
+  (mapcar #'random (make-list elb-map-closure-len 1000)))
+
+(defun elb-map-closure (l)
+  (let ((captured 0))
+    (mapc (lambda (x)
+           (when (or (> x 750)
+                     (< x 250))
+             (cl-incf captured)))
+         l)
+    captured))
+
+(defun elb-map-closure-entry ()
+  (cl-loop repeat 2500
+          do (elb-map-closure elb-map-closure-list)))
+
+(provide 'elb-map-closure)