Author: remm
Date: Tue Feb 19 14:58:00 2019
New Revision: 1853886
URL: http://svn.apache.org/viewvc?rev=1853886&view=rev
Log:
63182: Avoid extra notifications when using non container threads on read
causing thread safety problems. Tentative fix, but the pattern is clearly
causing a thread safety problem there. Also move ContainerMarkerThread, but
leave the old location around for compatibility.
Added:
tomcat/trunk/java/org/apache/tomcat/util/net/ContainerThreadMarker.java
- copied, changed from r1853866,
tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java
Modified:
tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java
tomcat/trunk/java/org/apache/tomcat/util/net/Nio2Endpoint.java
tomcat/trunk/test/org/apache/catalina/nonblocking/TestNonBlockingAPI.java
tomcat/trunk/webapps/docs/changelog.xml
Modified: tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java?rev=1853886&r1=1853885&r2=1853886&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java (original)
+++ tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java Tue Feb 19
14:58:00 2019
@@ -24,22 +24,15 @@ package org.apache.coyote;
*/
public class ContainerThreadMarker {
- private static final ThreadLocal<Boolean> marker = new ThreadLocal<>();
-
public static boolean isContainerThread() {
- Boolean flag = marker.get();
- if (flag == null) {
- return false;
- } else {
- return flag.booleanValue();
- }
+ return
org.apache.tomcat.util.net.ContainerThreadMarker.isContainerThread();
}
public static void set() {
- marker.set(Boolean.TRUE);
+ org.apache.tomcat.util.net.ContainerThreadMarker.set();
}
public static void clear() {
- marker.set(Boolean.FALSE);
+ org.apache.tomcat.util.net.ContainerThreadMarker.clear();
}
}
Copied: tomcat/trunk/java/org/apache/tomcat/util/net/ContainerThreadMarker.java
(from r1853866, tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java)
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/tomcat/util/net/ContainerThreadMarker.java?p2=tomcat/trunk/java/org/apache/tomcat/util/net/ContainerThreadMarker.java&p1=tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java&r1=1853866&r2=1853886&rev=1853886&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/coyote/ContainerThreadMarker.java (original)
+++ tomcat/trunk/java/org/apache/tomcat/util/net/ContainerThreadMarker.java Tue
Feb 19 14:58:00 2019
@@ -14,7 +14,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-package org.apache.coyote;
+package org.apache.tomcat.util.net;
/**
* Used to mark threads that have been allocated by the container to process
Modified: tomcat/trunk/java/org/apache/tomcat/util/net/Nio2Endpoint.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/tomcat/util/net/Nio2Endpoint.java?rev=1853886&r1=1853885&r2=1853886&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/tomcat/util/net/Nio2Endpoint.java (original)
+++ tomcat/trunk/java/org/apache/tomcat/util/net/Nio2Endpoint.java Tue Feb 19
14:58:00 2019
@@ -811,7 +811,7 @@ public class Nio2Endpoint extends Abstra
socketBufferHandler.configureReadBufferForRead();
nRead = Math.min(nRead, len);
socketBufferHandler.getReadBuffer().get(b, off, nRead);
- } else if (nRead == 0 && !block) {
+ } else if (nRead == 0 && !block &&
ContainerThreadMarker.isContainerThread()) {
readInterest = true;
}
@@ -876,7 +876,7 @@ public class Nio2Endpoint extends Abstra
// data that was just read
if (nRead > 0) {
nRead = populateReadBuffer(to);
- } else if (nRead == 0 && !block) {
+ } else if (nRead == 0 && !block &&
ContainerThreadMarker.isContainerThread()) {
readInterest = true;
}
}
Modified:
tomcat/trunk/test/org/apache/catalina/nonblocking/TestNonBlockingAPI.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/test/org/apache/catalina/nonblocking/TestNonBlockingAPI.java?rev=1853886&r1=1853885&r2=1853886&view=diff
==============================================================================
--- tomcat/trunk/test/org/apache/catalina/nonblocking/TestNonBlockingAPI.java
(original)
+++ tomcat/trunk/test/org/apache/catalina/nonblocking/TestNonBlockingAPI.java
Tue Feb 19 14:58:00 2019
@@ -48,12 +48,10 @@ import javax.servlet.http.HttpServletReq
import javax.servlet.http.HttpServletResponse;
import org.junit.Assert;
-import org.junit.Assume;
import org.junit.Ignore;
import org.junit.Test;
import org.apache.catalina.Context;
-import org.apache.catalina.connector.Connector;
import org.apache.catalina.startup.BytesStreamer;
import org.apache.catalina.startup.TesterServlet;
import org.apache.catalina.startup.Tomcat;
@@ -95,11 +93,6 @@ public class TestNonBlockingAPI extends
@Test
public void testNonBlockingReadAsync() throws Exception {
- Tomcat tomcat = getTomcatInstance();
- Connector connector = tomcat.getConnector();
- // Skip for NIO2
- Assume.assumeFalse("This test may fail for NIO2",
- connector.getProtocolHandlerClassName().contains("Nio2"));
doTestNonBlockingRead(false, true);
}
@@ -124,7 +117,7 @@ public class TestNonBlockingAPI extends
tomcat.start();
Map<String, List<String>> resHeaders = new HashMap<>();
- int rc = postUrl(true, new DataWriter(async ? 0 : 500, async ? 1000000
: 5),
+ int rc = postUrl(true, new DataWriter(async ? 0 : 500, async ? 2000000
: 5),
"http://localhost:"; + getPort() + "/", new ByteChunk(),
resHeaders, null);
Assert.assertEquals(HttpServletResponse.SC_OK, rc);
Modified: tomcat/trunk/webapps/docs/changelog.xml
URL:
http://svn.apache.org/viewvc/tomcat/trunk/webapps/docs/changelog.xml?rev=1853886&r1=1853885&r2=1853886&view=diff
==============================================================================
--- tomcat/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/trunk/webapps/docs/changelog.xml Tue Feb 19 14:58:00 2019
@@ -69,6 +69,10 @@
<code>ServletRequest.getServerName()</code> and
<code>ServletRequest.getServerPort()</code>. (markt)
</fix>
+ <fix>
+ <bug>63182</bug>: Avoid extra notifications when using non container
+ threads on read causing thread safety problems. (remm)
+ </fix>
</changelog>
</subsection>
<subsection name="WebSocket">
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