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HTTPCLIENT-1127: fixed dead-lock between SingleClientConnManager and AbstractPooledConnAdapter 

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1179609 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Oleg Kalnichevski 2011-10-06 13:07:33 +00:00
parent 62c57991f5
commit 0c00bef71e
2 changed files with 23 additions and 24 deletions
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19
httpclient/src/main/java/org/apache/http/impl/conn/AbstractClientConnAdapter.java
View File

@ -78,7 +78,7 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
* This attribute MUST NOT be final, so the adapter can be detached
* from the connection manager without keeping a hard reference there.
*/
private volatile ClientConnectionManager connManager;
private final ClientConnectionManager connManager;
/** The wrapped connection. */
private volatile OperatedClientConnection wrappedConnection;
@ -114,9 +114,8 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
* Detaches this adapter from the wrapped connection.
* This adapter becomes useless.
*/
protected synchronized void detach() {
protected void detach() {
wrappedConnection = null;
connManager = null; // base class attribute
duration = Long.MAX_VALUE;
}
@ -303,17 +302,18 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
}
}
public synchronized void releaseConnection() {
public void releaseConnection() {
synchronized (connManager) {
if (released) {
return;
}
released = true;
if (connManager != null) {
connManager.releaseConnection(this, duration, TimeUnit.MILLISECONDS);
}
}
public synchronized void abortConnection() {
public void abortConnection() {
synchronized (connManager) {
if (released) {
return;
}
@ -323,12 +323,11 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
shutdown();
} catch (IOException ignore) {
}
if (connManager != null) {
connManager.releaseConnection(this, duration, TimeUnit.MILLISECONDS);
}
}
public synchronized Object getAttribute(final String id) {
public Object getAttribute(final String id) {
OperatedClientConnection conn = getWrappedConnection();
assertValid(conn);
if (conn instanceof HttpContext) {
@ -338,7 +337,7 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
}
}
public synchronized Object removeAttribute(final String id) {
public Object removeAttribute(final String id) {
OperatedClientConnection conn = getWrappedConnection();
assertValid(conn);
if (conn instanceof HttpContext) {
@ -348,7 +347,7 @@ public abstract class AbstractClientConnAdapter implements ManagedClientConnecti
}
}
public synchronized void setAttribute(final String id, final Object obj) {
public void setAttribute(final String id, final Object obj) {
OperatedClientConnection conn = getWrappedConnection();
assertValid(conn);
if (conn instanceof HttpContext) {

2
httpclient/src/main/java/org/apache/http/impl/conn/AbstractPooledConnAdapter.java
View File

@ -105,7 +105,7 @@ public abstract class AbstractPooledConnAdapter extends AbstractClientConnAdapte
* This adapter becomes useless.
*/
@Override
protected synchronized void detach() {
protected void detach() {
poolEntry = null;
super.detach();
}