harbour-books/app/src/BooksTaskQueue.cpp
2018-05-16 18:27:12 +03:00

110 lines
3.7 KiB
C++

/*
* Copyright (C) 2015-2018 Jolla Ltd.
* Copyright (C) 2015-2018 Slava Monich <slava.monich@jolla.com>
*
* 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 Jolla 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.
*/
#include "BooksTaskQueue.h"
#include "HarbourDebug.h"
class BooksTaskQueue::Private {
public:
static weak_ptr<BooksTaskQueue> gDefaultQueue;
static weak_ptr<BooksTaskQueue> gScaleQueue;
static weak_ptr<BooksTaskQueue> gHashQueue;
static BooksTaskQueue* newDefaultQueue() { return new BooksTaskQueue(1); }
static BooksTaskQueue* newScaleQueue() { return new BooksTaskQueue(2); }
static BooksTaskQueue* newHashQueue() { return new BooksTaskQueue(1); }
static void waitForDone(shared_ptr<BooksTaskQueue> aQueue, int aMsecs) {
if (!aQueue.isNull()) {
aQueue->iPool->waitForDone(aMsecs);
}
}
static void waitForDone(int aMsecs) {
waitForDone(gDefaultQueue, aMsecs);
waitForDone(gScaleQueue, aMsecs);
waitForDone(gHashQueue, aMsecs);
}
static shared_ptr<BooksTaskQueue> get(weak_ptr<BooksTaskQueue>* aQueue,
BooksTaskQueue* (*aNewFunc)())
{
shared_ptr<BooksTaskQueue> queue;
if (aQueue->isNull()) {
*aQueue = (queue = aNewFunc());
} else {
queue = *aQueue;
}
return queue;
}
};
weak_ptr<BooksTaskQueue> BooksTaskQueue::Private::gDefaultQueue;
weak_ptr<BooksTaskQueue> BooksTaskQueue::Private::gScaleQueue;
weak_ptr<BooksTaskQueue> BooksTaskQueue::Private::gHashQueue;
shared_ptr<BooksTaskQueue> BooksTaskQueue::defaultQueue()
{
return Private::get(&Private::gDefaultQueue, Private::newDefaultQueue);
}
shared_ptr<BooksTaskQueue> BooksTaskQueue::scaleQueue()
{
return Private::get(&Private::gScaleQueue, Private::newScaleQueue);
}
shared_ptr<BooksTaskQueue> BooksTaskQueue::hashQueue()
{
return Private::get(&Private::gHashQueue, Private::newHashQueue);
}
void BooksTaskQueue::waitForDone(int aMsecs)
{
Private::waitForDone(aMsecs);
}
BooksTaskQueue::BooksTaskQueue(int aMaxThreadCount) :
iPool(new QThreadPool)
{
HDEBUG("created");
iPool->setMaxThreadCount(aMaxThreadCount);
}
BooksTaskQueue::~BooksTaskQueue()
{
HDEBUG("deleting");
iPool->waitForDone();
delete iPool;
HDEBUG("deleted");
}