December 2009 - jboss-dev-forums - Jboss List Archives

[Embedded JBoss Development] - Re: SHRINKWRAP-104: Empty Directories

by ALRubinger

"aslak" wrote : What if we drop the Asset all together and make a add method like: | | | archive.add(Path) | | @see DirectoryContainer, which has: container.addDirectory(Path); | container.addDirectories(Path...); | container.addDirectory(String); | container.addDirectories(String...); All spec archives types bring in DirectoryContainer support. "aslak" wrote : Path should then probably have a isDirectory method, checking if it ends with '/' seems to be common. Could add checks to other add methods so you can't add a Asset to a directory Path, can't get the Asset of a directory path etc.. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269397#4269397 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269397

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[JMX Development] - MXBean with TabularData Parameter in JConsole

by MarcusDidiusFalco

I have a MXBean which exposes a number of operations. I have noticed that all operations which have a TabularData parameter can not be invoked from jconsole (JDK 1.6). Is this a principal limitation of jconsole or do I have a configuration problem? Thanks, Hans View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269390#4269390 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269390

16 years, 1 month

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by Kevin.Conner＠jboss.com

How about just using ConcurrentHashMap?? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269385#4269385 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269385

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by dward

Again, something to weigh. If I do this: private static final String getLocalName(HttpServletRequest request) { | String localAddr = request.getLocalAddr(); | String localName = localAddr_to_localName.get(localAddr); | if (localName == null) { | localName = request.getLocalName(); | localAddr_to_localName.put(localAddr, localName); | } | return localName; | } | private static final Map<String,String> localAddr_to_localName = Collections.synchronizedMap(new HashMap<String,String>()); The it is thread safe, but opens the door for multiple calls to request.getLocalName(). But if I do this: private static final String getLocalName(HttpServletRequest request) { | String localAddr = request.getLocalAddr(); | synchronized (localAddr_to_localName) { | String localName = localAddr_to_localName.get(localAddr); | if (localName == null) { | localName = request.getLocalName(); | localAddr_to_localName.put(localAddr, localName); | } | return localName; | } | } | private static final Map<String,String> localAddr_to_localName = new HashMap<String,String>(); Then request.getLocalName() will only ever get called once, since both the get and put calls to the map are in the same atomic block. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269383#4269383 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269383

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by Kevin.Conner＠jboss.com

Or use the concurrent one. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269381#4269381 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269381

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by dward

Okay I'll include the get in the synchronized block then. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269380#4269380 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269380

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by Kevin.Conner＠jboss.com

The bug is in the use of hashmap outside of the synchronisation, as that fails in certain memory models. Caching multiple times is not the issue, although though could theoretically happen. Kev View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269377#4269377 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269377

16 years, 1 month

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[JBoss ESB Development] - Re: Performance Improvement Proposal: Cache result of HttpSe

by dward

Granted the code as posted leaves the door open for the possibility for a call to request.getLocalName() to be called and cached more than once, but this would only happen very early on in the server instance's life. I had to weigh that vs. having to synchronize getting the localName from the localAddr_to_localName map every invocation... Thoughts? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269376#4269376 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269376

16 years, 1 month

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[JBoss ESB Development] - Re: Performance Improvement Prop: Cache PortReference.extend

by Kevin.Conner＠jboss.com

It looks like the real issue is in the ActionProcessingPipeline rather than the extendedToString. Looks like there are a number of debug statements being invoked without guards, are they the source of this? If so, a better fix is to add the guards so that they are never invoked unless debugging is enabled (in which case the impact is not so important). Do you have a list of the invocation points within the pipeline? Kev View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269374#4269374 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269374

16 years, 1 month

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[JBoss Microcontainer Development] - Re: Adding getAnnotationsAnnotatedWith() to MDR

by alesj

I had something along this lines in mind | public AnnotationsItem retrieveAnnotationsAnnotatedWith(Class<? extends Annotation> meta) | { | Map<Class<?>, AnnotationsItems> index = retriveAnnotationsIndex(); | return new Commulative(this, true, index.get(meta)); | } | where CachingMDC does | protected Map<Class<?>, AnnotationsItem> retriveAnnotationsIndex() | { | Map<Class<?>, AnnotationsItem> cached = cache.get(key); | if (cached == null) | { | cached = super.retriveAnnotationsIndex(); | cache.put(key, cached); | } | else | // validate, etc, ... | | return cached; | } | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4269373#4269373 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4269373

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jboss-dev-forums December 2009