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Simple garbage collection tests test that GC is able to collect simple objects.
The test executes the following for several iterations: create array of objects,
then null all references and refill the array with new objects. The test uses
notions of garbage producer (nsk.share.gc.gp.GarbageProducer) and memory strategy
(nsk.share.gc.gp.MemoryStrategy) to alter it's behaviour. The tests automatically
adjust parameters to memory available to JVM as returned by Runtime.maxMemory().
Tests with "high" memory strategy (*High) create small number of big objects,
tests with "low" memory strategy (*Low) create huge number of small objects.