Author: kkolinko Date: Wed Jun 9 13:55:20 2010 New Revision: 953010 URL: http://svn.apache.org/viewvc?rev=953010&view=rev Log: Fix handling the add queue in AprEndpoint.Poller and AprEndpoint.Sendfile. Do not miss Object.notify() wakeup.
Modified: tomcat/tc6.0.x/trunk/ (props changed) tomcat/tc6.0.x/trunk/STATUS.txt tomcat/tc6.0.x/trunk/java/org/apache/tomcat/util/net/AprEndpoint.java tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Propchange: tomcat/tc6.0.x/trunk/ ------------------------------------------------------------------------------ --- svn:mergeinfo (original) +++ svn:mergeinfo Wed Jun 9 13:55:20 2010 @@ -1 +1 @@ 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,948057,950164,950596,950614,950851,950905,951615 Modified: tomcat/tc6.0.x/trunk/STATUS.txt URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=953010&r1=953009&r2=953010&view=diff ============================================================================== --- tomcat/tc6.0.x/trunk/STATUS.txt (original) +++ tomcat/tc6.0.x/trunk/STATUS.txt Wed Jun 9 13:55:20 2010 @@ -140,14 +140,6 @@ PATCHES PROPOSED TO BACKPORT: of "long time". 2) I see no way to turn off this feature or filter the output. -* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=48843#c8 - Fix handling the add queue in AprEndpoint.Poller and AprEndpoint.Sendfile. - Do not miss Object.notify() wakeup. - http://svn.apache.org/viewvc?rev=950851&view=rev - (Easier to review if you ignore whitespaces during the diff) - +1: kkolinko, kfujino. jfclere - -1: - * Do not evaluate "execute.installer" in dist.xml, as it is never used: "skip.installer" is used instead. Backport of r952478. It is just a cleanup and removal of obsolete comment. Not important. Modified: tomcat/tc6.0.x/trunk/java/org/apache/tomcat/util/net/AprEndpoint.java URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/tomcat/util/net/AprEndpoint.java?rev=953010&r1=953009&r2=953010&view=diff ============================================================================== --- tomcat/tc6.0.x/trunk/java/org/apache/tomcat/util/net/AprEndpoint.java (original) +++ tomcat/tc6.0.x/trunk/java/org/apache/tomcat/util/net/AprEndpoint.java Wed Jun 9 13:55:20 2010 @@ -1207,11 +1207,11 @@ public class AprEndpoint { protected long[] desc; protected long[] addS; - protected int addCount = 0; + protected volatile int addCount = 0; protected boolean comet = true; - protected int keepAliveCount = 0; + protected volatile int keepAliveCount = 0; public int getKeepAliveCount() { return keepAliveCount; } public Poller(boolean comet) { @@ -1327,15 +1327,17 @@ public class AprEndpoint { } } - while (keepAliveCount < 1 && addCount < 1) { - // Reset maintain time. - maintainTime = 0; - try { - synchronized (this) { - this.wait(); + if (keepAliveCount < 1 && addCount < 1) { + synchronized (this) { + while (keepAliveCount < 1 && addCount < 1) { + // Reset maintain time. + maintainTime = 0; + try { + this.wait(); + } catch (InterruptedException e) { + // Ignore + } } - } catch (InterruptedException e) { - // Ignore } } @@ -1343,21 +1345,26 @@ public class AprEndpoint { // Add sockets which are waiting to the poller if (addCount > 0) { synchronized (this) { - for (int i = (addCount - 1); i >= 0; i--) { - int rv = Poll.add - (serverPollset, addS[i], Poll.APR_POLLIN); - if (rv == Status.APR_SUCCESS) { - keepAliveCount++; - } else { - // Can't do anything: close the socket right away - if (comet) { - processSocket(addS[i], SocketStatus.ERROR); + int successCount = 0; + try { + for (int i = (addCount - 1); i >= 0; i--) { + int rv = Poll.add + (serverPollset, addS[i], Poll.APR_POLLIN); + if (rv == Status.APR_SUCCESS) { + successCount++; } else { - Socket.destroy(addS[i]); + // Can't do anything: close the socket right away + if (comet) { + processSocket(addS[i], SocketStatus.ERROR); + } else { + Socket.destroy(addS[i]); + } } } + } finally { + keepAliveCount += successCount; + addCount = 0; } - addCount = 0; } } @@ -1640,10 +1647,11 @@ public class AprEndpoint { protected long[] desc; protected HashMap<Long, SendfileData> sendfileData; - protected int sendfileCount; + protected volatile int sendfileCount; public int getSendfileCount() { return sendfileCount; } protected ArrayList<SendfileData> addS; + protected volatile int addCount; /** * Create the sendfile poller. With some versions of APR, the maximum poller size will @@ -1664,6 +1672,7 @@ public class AprEndpoint { desc = new long[size * 2]; sendfileData = new HashMap<Long, SendfileData>(size); addS = new ArrayList<SendfileData>(); + addCount = 0; } /** @@ -1681,6 +1690,7 @@ public class AprEndpoint { // Ignore } // Close any socket remaining in the add queue + addCount = 0; for (int i = (addS.size() - 1); i >= 0; i--) { SendfileData data = addS.get(i); Socket.destroy(data.socket); @@ -1748,6 +1758,7 @@ public class AprEndpoint { // at most for pollTime before being polled synchronized (this) { addS.add(data); + addCount++; this.notify(); } return false; @@ -1785,35 +1796,43 @@ public class AprEndpoint { } } - while (sendfileCount < 1 && addS.size() < 1) { - // Reset maintain time. - maintainTime = 0; - try { - synchronized (this) { - this.wait(); + if (sendfileCount < 1 && addCount < 1) { + synchronized (this) { + while (sendfileCount < 1 && addS.size() < 1) { + // Reset maintain time. + maintainTime = 0; + try { + this.wait(); + } catch (InterruptedException e) { + // Ignore + } } - } catch (InterruptedException e) { - // Ignore } } try { // Add socket to the poller - if (addS.size() > 0) { + if (addCount > 0) { synchronized (this) { - for (int i = (addS.size() - 1); i >= 0; i--) { - SendfileData data = addS.get(i); - int rv = Poll.add(sendfilePollset, data.socket, Poll.APR_POLLOUT); - if (rv == Status.APR_SUCCESS) { - sendfileData.put(new Long(data.socket), data); - sendfileCount++; - } else { - log.warn(sm.getString("endpoint.sendfile.addfail", "" + rv, Error.strerror(rv))); - // Can't do anything: close the socket right away - Socket.destroy(data.socket); + int successCount = 0; + try { + for (int i = (addS.size() - 1); i >= 0; i--) { + SendfileData data = addS.get(i); + int rv = Poll.add(sendfilePollset, data.socket, Poll.APR_POLLOUT); + if (rv == Status.APR_SUCCESS) { + sendfileData.put(new Long(data.socket), data); + successCount++; + } else { + log.warn(sm.getString("endpoint.sendfile.addfail", "" + rv, Error.strerror(rv))); + // Can't do anything: close the socket right away + Socket.destroy(data.socket); + } } + } finally { + sendfileCount += successCount; + addS.clear(); + addCount = 0; } - addS.clear(); } } Modified: tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml?rev=953010&r1=953009&r2=953010&view=diff ============================================================================== --- tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml (original) +++ tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Wed Jun 9 13:55:20 2010 @@ -166,6 +166,10 @@ <bug>48843</bug>: Prevent possible deadlock for worker allocation in connectors. (kkolinko) </fix> + <fix> + <bug>48843</bug>: Fix handling of add queues in AprEndpoint.Poller and + AprEndpoint.Sendfile. Do not miss wakeups. (kkolinko) + </fix> <add> <bug>48862</bug>: Add support for the backlog parameter to the AJP connector. (pero/markt) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org