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Issue #300 - use inflater/deflater pools in CompressExtension 

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>
This commit is contained in:
Lachlan Roberts 2019-07-02 16:42:50 +10:00
parent 64eb3217cd
commit 705e1cafe0
2 changed files with 20 additions and 12 deletions
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28
jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/core/internal/compress/CompressExtension.java
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@ -83,15 +83,13 @@ public abstract class CompressExtension extends AbstractExtension
*/
private static final int DECOMPRESS_BUF_SIZE = 8 * 1024;
private static final boolean NOWRAP = true;
private final Queue<FrameEntry> entries = new ArrayDeque<>();
private final IteratingCallback flusher = new Flusher();
private Deflater deflaterImpl;
private Inflater inflaterImpl;
protected AtomicInteger decompressCount = new AtomicInteger(0);
private int tailDrop = TAIL_DROP_NEVER;
private int rsvUse = RSV_USE_ALWAYS;
private int tailDrop;
private int rsvUse;
protected CompressExtension()
{
@ -102,21 +100,29 @@ public abstract class CompressExtension extends AbstractExtension
public Deflater getDeflater()
{
if (deflaterImpl == null)
{
deflaterImpl = new Deflater(Deflater.DEFAULT_COMPRESSION, NOWRAP);
}
deflaterImpl = getDeflaterPool().acquire();
return deflaterImpl;
}
public Inflater getInflater()
{
if (inflaterImpl == null)
{
inflaterImpl = new Inflater(NOWRAP);
}
inflaterImpl = getInflaterPool().acquire();
return inflaterImpl;
}
public void releaseInflater()
{
getInflaterPool().release(inflaterImpl);
inflaterImpl = null;
}
public void releaseDeflater()
{
getInflaterPool().release(inflaterImpl);
inflaterImpl = null;
}
/**
* Indicates use of RSV1 flag for indicating deflation is in use.
*/
@ -409,6 +415,8 @@ public abstract class CompressExtension extends AbstractExtension
@Override
public void failed(Throwable cause)
{
releaseInflater();
releaseDeflater();
notifyCallbackFailure(current.callback, cause);
// If something went wrong, very likely the compression context
// will be invalid, so we need to fail this IteratingCallback.

4
jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/core/internal/compress/PerMessageDeflateExtension.java
View File

@ -115,7 +115,7 @@ public class PerMessageDeflateExtension extends CompressExtension
{
LOG.debug("Incoming Context Reset");
decompressCount.set(0);
getInflater().reset();
releaseInflater();
}
super.nextIncomingFrame(frame, callback);
}
@ -126,7 +126,7 @@ public class PerMessageDeflateExtension extends CompressExtension
if (frame.isFin() && !outgoingContextTakeover)
{
LOG.debug("Outgoing Context Reset");
getDeflater().reset();
releaseDeflater();
}
super.nextOutgoingFrame(frame, callback, batch);
}