Re: Deadlock in PoolManager

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Tue Nov 23 2010 - 16:33:27 UTC

  • Next message: Laurent Marchal: "Re: Deadlock in PoolManager"

    Interesting. I guess we haven't seen it before cause people don't call dispose that often.

    Please open a Jira.

    Thanks,
    Andrus

    On Nov 23, 2010, at 5:54 PM, Laurent Marchal wrote:

    > Hi all,
    >
    > I'm using cayenne 3.0 ans I'm experiencing a deadlock when I exit my application. I call PoolManager.dispose() to disconnect all connections, but it seems if at the same time a pooled connection is returned to the pool then it deadlocks.
    >
    > Here is the deadlock as detected by the java console.
    >
    > Thanks,
    > Laurent Marchal.
    >
    > Name: Worker-2
    > State: BLOCKED on com.sma.core.net.OpconPoolManage..97871d owned by: main
    > Total blocked: 327 Total waited: 475
    >
    > Stack trace:
    > org.apache.cayenne.conn.PoolManager.connectionClosed(PoolManager.java:438)
    > org.apache.cayenne.conn.PooledConnectionImpl.connectionClosedNotification(PooledConnectionImpl.java:181)
    > - locked java.util.Collections$SynchronizedRandomAccessLis..2a12fc
    > org.apache.cayenne.conn.PooledConnectionImpl.returnConnectionToThePool(PooledConnectionImpl.java:146)
    > org.apache.cayenne.conn.ConnectionWrapper.close(ConnectionWrapper.java:127)
    > org.apache.cayenne.access.ExternalTransaction.close(ExternalTransaction.java:168)
    > org.apache.cayenne.access.ExternalTransaction.commit(ExternalTransaction.java:105)
    >
    > _______________________________________________________________________________________________________
    >
    > Name: main
    > State: BLOCKED on java.util.Collections$SynchronizedRandomAccessLis..2a12fc owned by: Worker-2
    > Total blocked: 30 Total waited: 122
    >
    > Stack trace:
    > org.apache.cayenne.conn.PooledConnectionImpl.removeConnectionEventListener(PooledConnectionImpl.java:97)
    > org.apache.cayenne.conn.PoolManager.dispose(OpconPoolManager.java:169)
    > - locked org.apache.cayenne.conn.PoolManage..97871d
    > com.sma.core.session.Session.disconnect(Session.java:189)
    > - locked java.lang.Objec..67a300
    > com.sma.core.session.Session.logout(Session.java:269)
    > - locked java.lang.Objec..67a300
    >

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