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HTTPCLIENT-1108: reuse of persistent connections now uses a stack (LIFO) 

instead of a queue (FIFO), so that unneeded connections will eventually
become idle and reclaimable by closeIdleConnections().


git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1147280 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jonathan Moore 2011-07-15 18:59:51 +00:00
parent d5b66aa9d8
commit 8600a7e959
1 changed files with 6 additions and 5 deletions
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11
httpclient/src/main/java/org/apache/http/impl/conn/tsccm/ConnPoolByRoute.java
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@ -34,6 +34,7 @@ import java.util.Queue;
import java.util.LinkedList;
import java.util.Map;
import java.util.Set;
import java.util.Stack;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.TimeUnit;
@ -82,7 +83,7 @@ public class ConnPoolByRoute extends AbstractConnPool { //TODO: remove dependenc
protected final Set<BasicPoolEntry> leasedConnections;
/** The list of free connections */
protected final Queue<BasicPoolEntry> freeConnections;
protected final Stack<BasicPoolEntry> freeConnections;
/** The list of WaitingThreads waiting for a connection */
protected final Queue<WaitingThread> waitingThreads;
@ -162,8 +163,8 @@ public class ConnPoolByRoute extends AbstractConnPool { //TODO: remove dependenc
*
* @return a queue
*/
protected Queue<BasicPoolEntry> createFreeConnQueue() {
return new LinkedList<BasicPoolEntry>();
protected Stack<BasicPoolEntry> createFreeConnQueue() {
return new Stack<BasicPoolEntry>();
}
/**
@ -462,7 +463,7 @@ public class ConnPoolByRoute extends AbstractConnPool { //TODO: remove dependenc
}
rospl.freeEntry(entry);
entry.updateExpiry(validDuration, timeUnit);
freeConnections.add(entry);
freeConnections.push(entry);
} else {
rospl.dropEntry();
numConnections--;
@ -611,7 +612,7 @@ public class ConnPoolByRoute extends AbstractConnPool { //TODO: remove dependenc
poolLock.lock();
try {
BasicPoolEntry entry = freeConnections.remove();
BasicPoolEntry entry = freeConnections.pop();
if (entry != null) {
deleteEntry(entry);