« Return to Thread: [jira] Created: (RVM-791) Clean up and modularize locking

[jira] Commented: (RVM-791) Clean up and modularize locking

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[ http://jira.codehaus.org/browse/RVM-791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=165680#action_165680 ]

Ian Rogers commented on RVM-791:
--------------------------------

More specifically:

rvm/src/org/jikesrvm/objectmodel/
rvm/src/org/jikesrvm/objectmodel/JavaHeaderConstants.java
rvm/src/org/jikesrvm/objectmodel/FieldLayoutUnpacked.java
rvm/src/org/jikesrvm/objectmodel/InsufficientBitsError.java
rvm/src/org/jikesrvm/objectmodel/header/
rvm/src/org/jikesrvm/objectmodel/header/Header.java
rvm/src/org/jikesrvm/objectmodel/header/locking/
rvm/src/org/jikesrvm/objectmodel/header/locking/ThinLockStatus.java
rvm/src/org/jikesrvm/objectmodel/header/locking/LockStatus.java
rvm/src/org/jikesrvm/objectmodel/header/hashing/
rvm/src/org/jikesrvm/objectmodel/header/hashing/CounterBasedHashStatus.java
rvm/src/org/jikesrvm/objectmodel/header/hashing/HashStatus.java
rvm/src/org/jikesrvm/objectmodel/header/hashing/AddressBasedHashStatus.java
rvm/src/org/jikesrvm/objectmodel/header/DefaultHeader.java
rvm/src/org/jikesrvm/objectmodel/OldJavaHeader.java
rvm/src/org/jikesrvm/objectmodel/RelativeToObjectReference.java
rvm/src/org/jikesrvm/objectmodel/tables/
rvm/src/org/jikesrvm/objectmodel/tables/ITableArray.java
rvm/src/org/jikesrvm/objectmodel/tables/RuntimeTable.java
rvm/src/org/jikesrvm/objectmodel/tables/ITable.java
rvm/src/org/jikesrvm/objectmodel/tables/TIB.java
rvm/src/org/jikesrvm/objectmodel/tables/IMT.java
rvm/src/org/jikesrvm/objectmodel/tables/TIBLayoutConstants.java
rvm/src/org/jikesrvm/objectmodel/MiscHeader.java
rvm/src/org/jikesrvm/objectmodel/NewObjectModel.java
rvm/src/org/jikesrvm/objectmodel/FieldLayoutContext.java
rvm/src/org/jikesrvm/objectmodel/ObjectModel.java
rvm/src/org/jikesrvm/objectmodel/FieldLayout.java
rvm/src/org/jikesrvm/objectmodel/BootImageInterface.java
rvm/src/org/jikesrvm/objectmodel/FieldLayoutPacked.java
rvm/src/org/jikesrvm/objectmodel/MiscHeaderConstants.java
rvm/src/org/jikesrvm/objectmodel/RelativeToStartOfObject.java

some of what there is cruft that I'm in the process of moving to the new model. The basic idea is that you can bolt together a header, the default header replicating the current header. The other part of this is to make the approach also agnostic to object layout. In particular bidirectional object layout and the use of handles into an object table rather than direct access to objects.

> Clean up and modularize locking
> -------------------------------
>
> Key: RVM-791
> URL: http://jira.codehaus.org/browse/RVM-791
> Project: RVM
> Issue Type: Improvement
> Components: Runtime: Threads and Concurrency
> Reporter: Filip Pizlo
> Assignee: Filip Pizlo
>
> Currently, Jikes RVM only allows for one style of locking. We'd like to be able to support multiple styles (eventually, it would be nice to have biased locking). As well, the locking code crosscuts more files than it needs to, largely for historical, rather than functional, reasons.

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« Return to Thread: [jira] Created: (RVM-791) Clean up and modularize locking