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Posted to dev@tomcat.apache.org by vi...@apache.org on 2016/10/27 21:22:39 UTC
svn commit: r1766893 - in /tomcat/tc8.5.x/trunk: ./
java/org/apache/catalina/connector/OutputBuffer.java
java/org/apache/tomcat/util/buf/ByteChunk.java
Author: violetagg
Date: Thu Oct 27 21:22:39 2016
New Revision: 1766893
URL: http://svn.apache.org/viewvc?rev=1766893&view=rev
Log:
Introduce a new method ByteChunk.append(ByteBuffer)
Modified:
tomcat/tc8.5.x/trunk/ (props changed)
tomcat/tc8.5.x/trunk/java/org/apache/catalina/connector/OutputBuffer.java
tomcat/tc8.5.x/trunk/java/org/apache/tomcat/util/buf/ByteChunk.java
Propchange: tomcat/tc8.5.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Thu Oct 27 21:22:39 2016
@@ -1 +1 @@
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Modified: tomcat/tc8.5.x/trunk/java/org/apache/catalina/connector/OutputBuffer.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/catalina/connector/OutputBuffer.java?rev=1766893&r1=1766892&r2=1766893&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/catalina/connector/OutputBuffer.java (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/catalina/connector/OutputBuffer.java Thu Oct 27 21:22:39 2016
@@ -18,6 +18,7 @@ package org.apache.catalina.connector;
import java.io.IOException;
import java.io.Writer;
+import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.security.AccessController;
import java.security.PrivilegedActionException;
@@ -384,6 +385,20 @@ public class OutputBuffer extends Writer
}
+ /**
+ * Sends the buffer data to the client output, checking the
+ * state of Response and calling the right interceptors.
+ *
+ * @param buf the ByteBuffer to be written to the response
+ *
+ * @throws IOException An underlying IOException occurred
+ */
+ @Override
+ public void realWriteBytes(ByteBuffer buf) throws IOException {
+ // To be implemented
+ }
+
+
public void write(byte b[], int off, int len) throws IOException {
if (suspended) {
Modified: tomcat/tc8.5.x/trunk/java/org/apache/tomcat/util/buf/ByteChunk.java
URL: http://svn.apache.org/viewvc/tomcat/tc8.5.x/trunk/java/org/apache/tomcat/util/buf/ByteChunk.java?rev=1766893&r1=1766892&r2=1766893&view=diff
==============================================================================
--- tomcat/tc8.5.x/trunk/java/org/apache/tomcat/util/buf/ByteChunk.java (original)
+++ tomcat/tc8.5.x/trunk/java/org/apache/tomcat/util/buf/ByteChunk.java Thu Oct 27 21:22:39 2016
@@ -98,6 +98,15 @@ public final class ByteChunk implements
*/
public void realWriteBytes(byte cbuf[], int off, int len)
throws IOException;
+
+ /**
+ * Send the bytes ( usually the internal conversion buffer ).
+ * Expect 8k output if the buffer is full.
+ *
+ * @param from bytes that will be written
+ * @throws IOException If an I/O occurs while writing the bytes
+ */
+ public void realWriteBytes(ByteBuffer from) throws IOException;
}
// --------------------
@@ -357,6 +366,74 @@ public final class ByteChunk implements
}
+ /**
+ * Add data to the buffer.
+ *
+ * @param from the ByteBuffer with the data
+ * @throws IOException Writing overflow data to the output channel failed
+ */
+ public void append(ByteBuffer from) throws IOException {
+ int len = from.remaining();
+
+ // will grow, up to limit
+ makeSpace(len);
+
+ // if we don't have limit: makeSpace can grow as it wants
+ if (limit < 0) {
+ // assert: makeSpace made enough space
+ from.get(buff, end, len);
+ end += len;
+ return;
+ }
+
+ // Optimize on a common case.
+ // If the buffer is empty and the source is going to fill up all the
+ // space in buffer, may as well write it directly to the output,
+ // and avoid an extra copy
+ if (len == limit && end == start && out != null) {
+ out.realWriteBytes(from);
+ from.position(from.limit());
+ return;
+ }
+ // if we have limit and we're below
+ if (len <= limit - end) {
+ // makeSpace will grow the buffer to the limit,
+ // so we have space
+ from.get(buff, end, len);
+ end += len;
+ return;
+ }
+
+ // need more space than we can afford, need to flush
+ // buffer
+
+ // the buffer is already at ( or bigger than ) limit
+
+ // We chunk the data into slices fitting in the buffer limit, although
+ // if the data is written directly if it doesn't fit
+
+ int avail = limit - end;
+ from.get(buff, end, avail);
+ end += avail;
+
+ flushBuffer();
+
+ int fromLimit = from.limit();
+ int remain = len - avail;
+ avail = limit - end;
+ while (remain >= avail) {
+ from.limit(from.position() + avail);
+ out.realWriteBytes(from);
+ from.position(from.limit());
+ remain = remain - avail;
+ }
+
+ from.limit(fromLimit);
+ from.get(buff, end, remain);
+ end += remain;
+ }
+
+
// -------------------- Removing data from the buffer --------------------
public int substract() throws IOException {
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