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Issue #5287 - Pool the entries instead of just the Deflater/Inflaters 

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>
This commit is contained in:
Lachlan Roberts 2020-09-18 11:44:52 +10:00
parent 21576f2312
commit d241c6694b
1 changed files with 30 additions and 15 deletions
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43
jetty-util/src/main/java/org/eclipse/jetty/util/compression/CompressionPool.java
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@ -18,6 +18,8 @@
package org.eclipse.jetty.util.compression;
import java.io.Closeable;
import org.eclipse.jetty.util.Pool;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
@ -26,7 +28,7 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
public static final int INFINITE_CAPACITY = Integer.MAX_VALUE;
private int _capacity;
private Pool<T> _pool;
private Pool<Entry> _pool;
/**
* Create a Pool of {@link T} instances.
@ -65,10 +67,18 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
*/
public Entry acquire()
{
Entry entry = null;
if (_pool != null)
return new Entry(_pool.acquire(e -> newObject()));
else
return new Entry();
{
Pool<Entry>.Entry acquiredEntry = _pool.acquire(e -> new Entry(newObject()));
if (acquiredEntry != null)
{
entry = acquiredEntry.getPooled();
entry.setEntry(acquiredEntry);
}
}
return (entry == null) ? new Entry(newObject()) : entry;
}
/**
@ -90,26 +100,25 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
@Override
public void doStop() throws Exception
{
// TODO: Pool.close() will not end the entries after it removes them.
_pool.close();
_pool = null;
super.doStop();
}
public class Entry
public class Entry implements Closeable
{
private T _value;
private Pool<T>.Entry _entry;
private Pool<Entry>.Entry _entry;
Entry()
Entry(T value)
{
this(null);
_value = value;
_entry = null;
}
Entry(Pool<T>.Entry entry)
void setEntry(Pool<Entry>.Entry entry)
{
_entry = entry;
_value = (_entry != null) ? _entry.getPooled() : newObject();
}
public T get()
@ -127,12 +136,18 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
// If release return false, the entry should be removed and the object should be disposed.
if (!_pool.release(_entry))
{
// TODO: what does it mean if this returns false???
if (_pool.remove(_entry))
end(_value);
close();
}
_entry = null;
}
}
@Override
public void close()
{
end(_value);
_value = null;
_entry = null;
}
@ -145,7 +160,7 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
getClass().getSimpleName(),
hashCode(),
getState(),
_pool.size(),
(_pool == null) ? -1 : _pool.size(),
_capacity);
}
}