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6984287: Regularize how GC parallel workers are specified

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Associate number of GC workers with the workgang as opposed to the task.

Reviewed-by: johnc, ysr
This commit is contained in:
Jon Masamitsu 2010-09-20 14:38:38 -07:00
parent 3af63c10ab
commit 28e56b8970
29 changed files with 504 additions and 216 deletions
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6
hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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@ -729,7 +729,9 @@ class CMSCollector: public CHeapObj {
// Support for marking stack overflow handling
bool take_from_overflow_list(size_t num, CMSMarkStack* to_stack);
bool par_take_from_overflow_list(size_t num, OopTaskQueue* to_work_q);
bool par_take_from_overflow_list(size_t num,
OopTaskQueue* to_work_q,
int no_of_gc_threads);
void push_on_overflow_list(oop p);
void par_push_on_overflow_list(oop p);
// the following is, obviously, not, in general, "MT-stable"
@ -768,7 +770,7 @@ class CMSCollector: public CHeapObj {
void abortable_preclean(); // Preclean while looking for possible abort
void initialize_sequential_subtasks_for_young_gen_rescan(int i);
// Helper function for above; merge-sorts the per-thread plab samples
void merge_survivor_plab_arrays(ContiguousSpace* surv);
void merge_survivor_plab_arrays(ContiguousSpace* surv, int no_of_gc_threads);
// Resets (i.e. clears) the per-thread plab sample vectors
void reset_survivor_plab_arrays();