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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QCache>
#include <QMutex>
#include <QThreadStorage>
#define Counter ReentrantCounter
class Counter
{
public:
Counter() { n = 0; }
void increment() { ++n; }
void decrement() { --n; }
int value() const { return n; }
private:
int n;
};
#undef Counter
#define Counter ThreadSafeCounter
class Counter
{
public:
Counter() { n = 0; }
void increment() { QMutexLocker locker(&mutex); ++n; }
void decrement() { QMutexLocker locker(&mutex); --n; }
int value() const { QMutexLocker locker(&mutex); return n; }
private:
mutable QMutex mutex;
int n;
};
typedef int SomeClass;
//! [7]
QThreadStorage<QCache<QString, SomeClass> > caches;
void cacheObject(const QString &key, SomeClass *object)
//! [7] //! [8]
{
caches.localData().insert(key, object);
}
void removeFromCache(const QString &key)
//! [8] //! [9]
{
if (!caches.hasLocalData())
return;
caches.localData().remove(key);
}
//! [9]
int main()
{
return 0;
}