private void SplitPage(Page <T> page)
{
// split the page
DateTime dt = FastDateTime.Now;
Page <T> newpage = new Page <T>();
newpage.DiskPageNumber = _index.GetNewPageNumber();
newpage.RightPageNumber = page.RightPageNumber;
newpage.isDirty = true;
page.RightPageNumber = newpage.DiskPageNumber;
// get and sort keys
T[] keys = page.tree.Keys();
Array.Sort <T>(keys);
// copy data to new
for (int i = keys.Length / 2; i < keys.Length; i++)
{
newpage.tree.Add(keys[i], page.tree[keys[i]]);
// remove from old page
page.tree.Remove(keys[i]);
}
// set the first key
newpage.FirstKey = keys[keys.Length / 2];
// set the first key refs
_pageList.Remove(page.FirstKey);
_pageList.Remove(keys[0]);
// dup counts
_pageList.Add(keys[0], new PageInfo(page.DiskPageNumber, page.tree.Count, 0));
page.FirstKey = keys[0];
// FEATURE : dup counts
_pageList.Add(newpage.FirstKey, new PageInfo(newpage.DiskPageNumber, newpage.tree.Count, 0));
_cache.Add(newpage.DiskPageNumber, newpage);
_totalsplits += FastDateTime.Now.Subtract(dt).TotalSeconds;
}
private void SplitPage(Page <T> page)
{
// split the page
DateTime dt = FastDateTime.Now;
Page <T> newpage = new Page <T>();
newpage.DiskPageNumber = _index.GetNewPageNumber();
newpage.RightPageNumber = page.RightPageNumber;
newpage.isDirty = true;
page.RightPageNumber = newpage.DiskPageNumber;
_pageList.Remove(page.FirstKey);
// get and sort keys
T[] keys = page.tree.Keys.OrderBy(x => x).ToArray();
// copy data to new
for (int i = keys.Length / 2; i < keys.Length; i++)
{
newpage.tree.TryAdd(keys[i], page.tree[keys[i]]);
// remove from old page
page.tree.TryRemove(keys[i], out KeyInfo value);
}
// set the first key
newpage.FirstKey = keys[keys.Length / 2]; // new key
// remove keys from page list
_pageList.Remove(newpage.FirstKey);
page.FirstKey = keys[0]; // new key
// re add to page list
_pageList.Add(page.FirstKey, new PageInfo(page.DiskPageNumber, page.tree.Count(), 0));
_pageList.Add(newpage.FirstKey, new PageInfo(newpage.DiskPageNumber, newpage.tree.Count(), 0));
_cache.TryAdd(newpage.DiskPageNumber, newpage);
_totalsplits += FastDateTime.Now.Subtract(dt).TotalSeconds;
}
public void FreeMemory()
{
_index.FreeMemory();
try
{
List <int> free = new List <int>();
foreach (var c in _cache)
{
if (c.Value.isDirty == false)
{
free.Add(c.Key);
}
}
_log.Debug("releasing page count = " + free.Count + " out of " + _cache.Count);
foreach (var i in free)
{
_cache.Remove(i);
}
}
catch { }
}
internal void FreeMemory()
{
try
{
List <int> free = new List <int>();
foreach (var b in _cache)
{
if (b.Value.isDirty == false)
{
free.Add(b.Key);
}
}
log.Debug("releasing bmp count = " + free.Count + " out of " + _cache.Count);
foreach (int i in free)
{
_cache.Remove(i);
}
}
catch (Exception ex) {
log.Error(ex);
}
}
public MGRB Optimize()
{
lock (_lock)
{
var keys = _containers.Keys();
var remove = new List <int>();
for (int i = 0; i < keys.Length; i++)
{
var k = keys[i];
var c = _containers[k];
if (c.CountOnes() == 0)
{
remove.Add(k);
}
//else if (c.CountZeros() < Container.CHGOVER)
//{
// _containers[k] = new ZeroContainer();
//}
else if (c.ChangeRequired())
{
_containers[k] = c.Change();
}
}
foreach (var k in remove)
{
_containers.Remove(k);
}
return(this);
}
}