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authorCasper van Donderen <casper.vandonderen@nokia.com>2012-03-20 19:37:07 +0100
committerQt by Nokia <qt-info@nokia.com>2012-04-19 07:34:53 +0200
commit0bc02fd0d61d1e4aed9b39890d28975dff30e822 (patch)
treee967ab719c7f8df24c35b088bd48e0f5b0942148 /src/corelib/doc/snippets/qelapsedtimer
parent7f0c130be963de90d1baeb037820b17a4f298700 (diff)
Doc: Prepare for building modular QtCore docs.
This change fixes most qdoc errors in QtCore. There are about 900 left. The main thing this change does is moving documentation from qtcore from /doc/src to /src/corelib/doc. Other issues resolved are mis-use of qdoc commands. Change-Id: I002d01edfb13575e8bf27ce91596a577a92562d1 Reviewed-by: Lars Knoll <lars.knoll@nokia.com> Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com> Reviewed-by: Jerome Pasion <jerome.pasion@nokia.com>
Diffstat (limited to 'src/corelib/doc/snippets/qelapsedtimer')
-rw-r--r--src/corelib/doc/snippets/qelapsedtimer/main.cpp111
1 files changed, 111 insertions, 0 deletions
diff --git a/src/corelib/doc/snippets/qelapsedtimer/main.cpp b/src/corelib/doc/snippets/qelapsedtimer/main.cpp
new file mode 100644
index 0000000000..7b4b6529e7
--- /dev/null
+++ b/src/corelib/doc/snippets/qelapsedtimer/main.cpp
@@ -0,0 +1,111 @@
+/****************************************************************************
+**
+** 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);
+}