Author: markt
Date: Wed May 29 15:55:28 2013
New Revision: 1487523
URL: http://svn.apache.org/r1487523
Log:
Align onWritePossible behaviour with the spec.
This passes the unit tests on Windows.
Still some TODOs to resolve once I have checked this passes the tests on other
platforms (including the CI system)
Modified:
tomcat/trunk/java/org/apache/catalina/connector/CoyoteAdapter.java
tomcat/trunk/java/org/apache/catalina/connector/OutputBuffer.java
tomcat/trunk/java/org/apache/coyote/ActionCode.java
tomcat/trunk/java/org/apache/coyote/Response.java
tomcat/trunk/java/org/apache/coyote/http11/AbstractHttp11Processor.java
tomcat/trunk/java/org/apache/coyote/http11/AbstractOutputBuffer.java
tomcat/trunk/java/org/apache/coyote/http11/InternalAprOutputBuffer.java
tomcat/trunk/java/org/apache/coyote/http11/InternalNioOutputBuffer.java
tomcat/trunk/java/org/apache/coyote/http11/InternalOutputBuffer.java
Modified: tomcat/trunk/java/org/apache/catalina/connector/CoyoteAdapter.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/connector/CoyoteAdapter.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/connector/CoyoteAdapter.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/connector/CoyoteAdapter.java Wed May
29 15:55:28 2013
@@ -356,7 +356,7 @@ public class CoyoteAdapter implements Ad
request.getContext().getLoader().getClassLoader();
try {
Thread.currentThread().setContextClassLoader(newCL);
- res.getWriteListener().onWritePossible();
+ res.onWritePossible();
} finally {
Thread.currentThread().setContextClassLoader(oldCL);
}
Modified: tomcat/trunk/java/org/apache/catalina/connector/OutputBuffer.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/connector/OutputBuffer.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/connector/OutputBuffer.java (original)
+++ tomcat/trunk/java/org/apache/catalina/connector/OutputBuffer.java Wed May
29 15:55:28 2013
@@ -22,7 +22,6 @@ import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.HashMap;
-import java.util.concurrent.atomic.AtomicBoolean;
import javax.servlet.WriteListener;
@@ -647,13 +646,7 @@ public class OutputBuffer extends Writer
public boolean isReady() {
- if (coyoteResponse.getWriteListener() == null) {
- throw new IllegalStateException("not in non blocking mode.");
- }
- // Assume write is not possible
- AtomicBoolean isReady = new AtomicBoolean(false);
- coyoteResponse.action(ActionCode.NB_WRITE_INTEREST, isReady);
- return isReady.get();
+ return coyoteResponse.isReady();
}
Modified: tomcat/trunk/java/org/apache/coyote/ActionCode.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/ActionCode.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/ActionCode.java (original)
+++ tomcat/trunk/java/org/apache/coyote/ActionCode.java Wed May 29 15:55:28 2013
@@ -213,6 +213,12 @@ public enum ActionCode {
NB_WRITE_INTEREST,
/**
+ * Flush the lower level buffers and re-register the socket with the poller
+ * if the buffers cannot be completely flushed.
+ */
+ NB_WRITE_FLUSH,
+
+ /**
* Indicates if the request body has been fully read.
*/
REQUEST_BODY_FULLY_READ
Modified: tomcat/trunk/java/org/apache/coyote/Response.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/Response.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/Response.java (original)
+++ tomcat/trunk/java/org/apache/coyote/Response.java Wed May 29 15:55:28 2013
@@ -548,6 +548,8 @@ public final class Response {
}
protected volatile WriteListener listener;
+ private boolean fireListener = false;
+ private final Object fireListenerLock = new Object();
public WriteListener getWriteListener() {
return listener;
@@ -573,4 +575,45 @@ public final class Response {
this.listener = listener;
}
+
+ public boolean isReady() {
+ if (listener == null) {
+ // TODO i18n
+ throw new IllegalStateException("not in non blocking mode.");
+ }
+ // Assume write is not possible
+ AtomicBoolean isReady = new AtomicBoolean(false);
+ synchronized (fireListenerLock) {
+ if (fireListener) {
+ // isReady() has already returned false
+ return true;
+ }
+ action(ActionCode.NB_WRITE_INTEREST, isReady);
+ fireListener = !isReady.get();
+ }
+ return isReady.get();
+ }
+
+ public void onWritePossible() throws IOException {
+ // Flush the lower level buffers
+ // If data left in buffers wait for next onWritePossible. Socket will
+ // have been placed in poller if buffers weren't emptied.
+ AtomicBoolean isDataLeftInBuffers = new AtomicBoolean(true);
+ action(ActionCode.NB_WRITE_FLUSH, isDataLeftInBuffers);
+ if (isDataLeftInBuffers.get()) {
+ return;
+ }
+
+ // No data in lower level buffers. Ready for app to write more data.
+ boolean fire = false;
+ synchronized (fireListenerLock) {
+ if (fireListener) {
+ fireListener = false;
+ fire = true;
+ }
+ }
+ if (fire) {
+ listener.onWritePossible();
+ }
+ }
}
Modified:
tomcat/trunk/java/org/apache/coyote/http11/AbstractHttp11Processor.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/http11/AbstractHttp11Processor.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/http11/AbstractHttp11Processor.java
(original)
+++ tomcat/trunk/java/org/apache/coyote/http11/AbstractHttp11Processor.java Wed
May 29 15:55:28 2013
@@ -815,7 +815,20 @@ public abstract class AbstractHttp11Proc
request.setAvailable(inputBuffer.available());
} else if (actionCode == ActionCode.NB_WRITE_INTEREST) {
AtomicBoolean isReady = (AtomicBoolean)param;
- isReady.set(getOutputBuffer().isReady());
+ try {
+ isReady.set(getOutputBuffer().isReady());
+ } catch (IOException e) {
+ // TODO
+ throw new IllegalStateException();
+ }
+ } else if (actionCode == ActionCode.NB_WRITE_FLUSH) {
+ AtomicBoolean isDataLeftInBuffers = (AtomicBoolean)param;
+ try {
+ isDataLeftInBuffers.set(getOutputBuffer().flushBuffer(false));
+ } catch (IOException e) {
+ // TODO
+ throw new IllegalStateException();
+ }
} else if (actionCode == ActionCode.NB_READ_INTEREST) {
registerForEvent(true, false);
} else if (actionCode == ActionCode.UPGRADE) {
Modified: tomcat/trunk/java/org/apache/coyote/http11/AbstractOutputBuffer.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/http11/AbstractOutputBuffer.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/http11/AbstractOutputBuffer.java
(original)
+++ tomcat/trunk/java/org/apache/coyote/http11/AbstractOutputBuffer.java Wed
May 29 15:55:28 2013
@@ -607,6 +607,7 @@ public abstract class AbstractOutputBuff
//------------------------------------------------------ Non-blocking
writes
protected abstract boolean hasMoreDataToFlush();
+ protected abstract void registerWriteInterest() throws IOException;
/**
@@ -628,8 +629,12 @@ public abstract class AbstractOutputBuff
}
- protected final boolean isReady() {
- return !hasDataToWrite();
+ protected final boolean isReady() throws IOException {
+ boolean result = !hasDataToWrite();
+ if (!result) {
+ registerWriteInterest();
+ }
+ return result;
}
Modified:
tomcat/trunk/java/org/apache/coyote/http11/InternalAprOutputBuffer.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/http11/InternalAprOutputBuffer.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/http11/InternalAprOutputBuffer.java
(original)
+++ tomcat/trunk/java/org/apache/coyote/http11/InternalAprOutputBuffer.java Wed
May 29 15:55:28 2013
@@ -316,7 +316,7 @@ public class InternalAprOutputBuffer ext
bbuf.clear();
flipped = false;
} else {
- ((AprEndpoint) endpoint).getPoller().add(socket, -1, false, true);
+ registerWriteInterest();
}
}
@@ -339,6 +339,12 @@ public class InternalAprOutputBuffer ext
}
+ @Override
+ protected void registerWriteInterest() {
+ ((AprEndpoint) endpoint).getPoller().add(socket, -1, false, true);
+ }
+
+
// ----------------------------------- OutputStreamOutputBuffer Inner Class
/**
Modified:
tomcat/trunk/java/org/apache/coyote/http11/InternalNioOutputBuffer.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/http11/InternalNioOutputBuffer.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/http11/InternalNioOutputBuffer.java
(original)
+++ tomcat/trunk/java/org/apache/coyote/http11/InternalNioOutputBuffer.java Wed
May 29 15:55:28 2013
@@ -155,7 +155,7 @@ public class InternalNioOutputBuffer ext
}
if (flipped) {
// Still have data to write
- att.getPoller().add(socket, SelectionKey.OP_WRITE);
+ registerWriteInterest();
}
return written;
}
@@ -274,18 +274,31 @@ public class InternalNioOutputBuffer ext
return hasMoreDataToFlush();
}
+
@Override
protected boolean hasMoreDataToFlush() {
return (flipped &&
socket.getBufHandler().getWriteBuffer().remaining()>0) ||
(!flipped && socket.getBufHandler().getWriteBuffer().position() > 0);
}
+
+ @Override
+ protected void registerWriteInterest() throws IOException {
+ NioEndpoint.KeyAttachment att =
(NioEndpoint.KeyAttachment)socket.getAttachment(false);
+ if (att == null) {
+ throw new IOException("Key must be cancelled");
+ }
+ att.getPoller().add(socket, SelectionKey.OP_WRITE);
+ }
+
+
private int transfer(byte[] from, int offset, int length, ByteBuffer to) {
int max = Math.min(length, to.remaining());
to.put(from, offset, max);
return max;
}
+
private void transfer(ByteBuffer from, ByteBuffer to) {
int max = Math.min(from.remaining(), to.remaining());
ByteBuffer tmp = from.duplicate ();
Modified: tomcat/trunk/java/org/apache/coyote/http11/InternalOutputBuffer.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/http11/InternalOutputBuffer.java?rev=1487523&r1=1487522&r2=1487523&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/http11/InternalOutputBuffer.java
(original)
+++ tomcat/trunk/java/org/apache/coyote/http11/InternalOutputBuffer.java Wed
May 29 15:55:28 2013
@@ -195,6 +195,12 @@ public class InternalOutputBuffer extend
@Override
+ protected void registerWriteInterest() throws IOException {
+ // NO-OP for non-blocking connector
+ }
+
+
+ @Override
protected boolean flushBuffer(boolean block) throws IOException {
// Blocking connector so ignore block parameter as this will always use
// blocking IO.
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