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412418 HttpTransportOverSPDY fix race condition while sending push streams that could cause push data not to be sent. Fixes intermittent test issues in ReferrerPushStrategyTest

This commit is contained in:
Thomas Becker 2013-07-24 10:13:53 +02:00
parent eb126ebaee
commit 1ab5de8ecd
1 changed files with 22 additions and 9 deletions
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31
jetty-spdy/spdy-http-server/src/main/java/org/eclipse/jetty/spdy/server/http/HttpTransportOverSPDY.java
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@ -294,15 +294,27 @@ public class HttpTransportOverSPDY implements HttpTransport
private void sendNextResourceData()
{
PushResource resource;
if(active.compareAndSet(false, true))
LOG.debug("{} sendNextResourceData active: {}", hashCode(), active.get());
if (active.compareAndSet(false, true))
{
resource = queue.poll();
if (resource == null)
PushResource resource = queue.poll();
if (resource != null)
{
LOG.debug("Opening new push channel for: {}", resource);
HttpChannelOverSPDY pushChannel = newHttpChannelOverSPDY(resource.getPushStream(), resource.getPushRequestHeaders());
pushChannel.requestStart(resource.getPushRequestHeaders(), true);
return;
LOG.debug("Opening new push channel for: {}", resource);
HttpChannelOverSPDY pushChannel = newHttpChannelOverSPDY(resource.getPushStream(), resource.getPushRequestHeaders());
pushChannel.requestStart(resource.getPushRequestHeaders(), true);
}
if (active.compareAndSet(true, false))
{
if (queue.peek() != null)
sendNextResourceData();
}
else
{
throw new IllegalStateException("active must not be false here! Concurrency bug!");
}
}
}
@ -336,14 +348,15 @@ public class HttpTransportOverSPDY implements HttpTransport
public void failed(Throwable x)
{
LOG.debug("Creating push stream failed.", x);
sendNextResourceData();
}
});
}
private void complete()
{
if(!active.compareAndSet(true, false))
LOG.warn("complete() called and active==false? That smells like a concurrency bug!", new IllegalStateException());
if (!active.compareAndSet(true, false))
throw new IllegalStateException();
sendNextResourceData();
}