public void ResetPages()
{
//abort all async tasks
_asyncPool.Clear();
_pageMaxNumber = this.RowCount / _pageSize;
lock (_cache)
{
for (int i = 0; i < _cache.Length; i++)
{
_cache[i] = new Page(_pageMaxNumber * 3 + 1);
}
_currentTwoPagesPool[0] = new NI(_pageMaxNumber * 3 + 1, 0);
_currentTwoPagesPool[1] = new NI(_pageMaxNumber * 3 + 2, 0);
}
_id = Guid.NewGuid();
}
private void RenewCurrentPool(int needPageNumber)
{
//aborting old tasks
_asyncPool.Abort(i => Math.Abs(i - needPageNumber) > _cacheDeep + 1);
//wait need page async load end
while (_asyncPool.Exists(needPageNumber))
{
Thread.Sleep(100);
}
lock (_cache)
{
int index = FindIndex(needPageNumber);
if (index < 0)
{
//sync load
LoadPage(needPageNumber);
index = FindIndex(needPageNumber);
if (index < 0)
{
throw new Exception("sync load");
}
}
int indexOnRemove = 0;
if (Math.Abs(_currentTwoPagesPool[0].N - needPageNumber) < Math.Abs(_currentTwoPagesPool[1].N - needPageNumber))
{
indexOnRemove = 1;
}
_currentTwoPagesPool[indexOnRemove] = new NI(needPageNumber, index);
}
for (int i = 1; i <= _cacheDeep; i++)
{
//async load needPageNumber + i
AsyncLoadPage(needPageNumber + i);
//async load needPageNumber - i
AsyncLoadPage(needPageNumber - i);
}
}
private void RenewCurrentPool(int needPageNumber)
{
//aborting old tasks
_asyncPool.Abort(i => Math.Abs(i - needPageNumber) > _cacheDeep + 1);
//wait need page async load end
while (_asyncPool.Exists(needPageNumber))
{
Thread.Sleep(100);
}
lock (_cache)
{
int index = FindIndex(needPageNumber);
if (index < 0)
{
//sync load
LoadPage(needPageNumber);
index = FindIndex(needPageNumber);
if (index < 0)
throw new Exception("sync load");
}
int indexOnRemove = 0;
if (Math.Abs(_currentTwoPagesPool[0].N - needPageNumber) < Math.Abs(_currentTwoPagesPool[1].N - needPageNumber))
indexOnRemove = 1;
_currentTwoPagesPool[indexOnRemove] = new NI(needPageNumber, index);
}
for (int i = 1; i <= _cacheDeep; i++)
{
//async load needPageNumber + i
AsyncLoadPage(needPageNumber + i);
//async load needPageNumber - i
AsyncLoadPage(needPageNumber - i);
}
}
public void ResetPages()
{
//abort all async tasks
_asyncPool.Clear();
_pageMaxNumber = this.RowCount / _pageSize;
lock (_cache)
{
for (int i = 0; i < _cache.Length; i++)
{
_cache[i] = new Page(_pageMaxNumber * 3 + 1);
}
_currentTwoPagesPool[0] = new NI(_pageMaxNumber * 3 + 1, 0);
_currentTwoPagesPool[1] = new NI(_pageMaxNumber * 3 + 2, 0);
}
_id = Guid.NewGuid();
}
