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| |
| Test garbage collector compaction. |
| |
| The test starts several threads which create objects using |
| given garbage producer until OOM. The references are kept |
| in an array. The references to even elements are cleared |
| and objects of double size are created until OOM. The garbage |
| collector will have to compact free space to free memory for |
| new objects. |
| |
| The tests differ by object types used for first and second phase: |
| - _Arrays tests randomly use arrays of basic types and Object[] arrays. |
| - _Strings tests use random strings. |
| - _NonbranchyTree tests use nonbranchy trees. |
| - _InternedStrings use interned strings. |
| - _ArrayOf tests use array with two elements for second phase, |
| the elements of which point to objects of same type. |
| - _TwoFields tests use object with two fields for second phase, |
| which point to objects of same type. |
| |
| Each *1 test is the single-threaded version of corresponding test. |
| |
| The Humongous tests are similar to compact tests. However they used |
| the fixed size of objects which allocation requre compaction. The |
| size is specific for G1 GC (about 1M and 5M) and require humongous |
| object creation in G1. |
