diff options
author | Simon Hausmann <simon.hausmann@qt.io> | 2018-08-20 14:35:40 +0200 |
---|---|---|
committer | Simon Hausmann <simon.hausmann@qt.io> | 2018-08-21 06:33:35 +0000 |
commit | ec022d0efec47e0e68cdec1c2e018ce864cc015c (patch) | |
tree | 4e98ce197a8a2e54c00638770485457656c80684 /examples/quick/threading/workerscript/workerscript.mjs | |
parent | 4b73fc5bd2fd3df10f1e7499c82da08fbd417055 (diff) |
Port WorkerScript threading examples to use ES modules
This is the more modern way of doing things, so demonstrate that in our
examples and documentation.
Change-Id: Icd5316fbeeb00c34d470c8d871851945dc831244
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'examples/quick/threading/workerscript/workerscript.mjs')
-rw-r--r-- | examples/quick/threading/workerscript/workerscript.mjs | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/examples/quick/threading/workerscript/workerscript.mjs b/examples/quick/threading/workerscript/workerscript.mjs new file mode 100644 index 0000000000..9953958086 --- /dev/null +++ b/examples/quick/threading/workerscript/workerscript.mjs @@ -0,0 +1,74 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//Will be initialized when WorkerScript{} is instantiated +var cache = new Array(64); +for (var i = 0; i < 64; i++) + cache[i] = new Array(64); + +function triangle(row, column) { + if (cache[row][column]) + return cache[row][column] + if (column < 0 || column > row) + return -1; + if (column == 0 || column == row) + return 1; + return triangle(row-1, column-1) + triangle(row-1, column); +} +//! [0] +WorkerScript.onMessage = function(message) { + //Calculate result (may take a while, using a naive algorithm) + var calculatedResult = triangle(message.row, message.column); + //Send result back to main thread + WorkerScript.sendMessage( { row: message.row, + column: message.column, + result: calculatedResult} ); +} +//! [0] |