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Diffstat (limited to 'doc/src/snippets/qelapsedtimer/main.cpp')
-rw-r--r-- | doc/src/snippets/qelapsedtimer/main.cpp | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/doc/src/snippets/qelapsedtimer/main.cpp b/doc/src/snippets/qelapsedtimer/main.cpp deleted file mode 100644 index 7b4b6529e7..0000000000 --- a/doc/src/snippets/qelapsedtimer/main.cpp +++ /dev/null @@ -1,111 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtNetwork module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Nokia Corporation and its Subsidiary(-ies) 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -#include <QtCore> - -void slowOperation1() -{ - static char buf[256]; - for (int i = 0; i < (1<<20); ++i) - buf[i % sizeof buf] = i; -} - -void slowOperation2(int) { slowOperation1(); } - -void startExample() -{ -//![0] - QElapsedTimer timer; - timer.start(); - - slowOperation1(); - - qDebug() << "The slow operation took" << timer.elapsed() << "milliseconds"; -//![0] -} - -//![1] -void executeSlowOperations(int timeout) -{ - QElapsedTimer timer; - timer.start(); - slowOperation1(); - - int remainingTime = timeout - timer.elapsed(); - if (remainingTime > 0) - slowOperation2(remainingTime); -} -//![1] - -//![2] -void executeOperationsForTime(int ms) -{ - QElapsedTimer timer; - timer.start(); - - while (!timer.hasExpired(ms)) - slowOperation1(); -} -//![2] - -int restartExample() -{ -//![3] - QElapsedTimer timer; - - int count = 1; - timer.start(); - do { - count *= 2; - slowOperation2(count); - } while (timer.restart() < 250); - - return count; -//![3] -} - -int main(int argc, char **argv) -{ - QCoreApplication app(argc, argv); - - startExample(); - restartExample(); - executeSlowOperations(5); - executeOperationsForTime(5); -} |