555 // GC locker being active, true otherwise
556 bool do_collection(bool explicit_gc,
557 bool clear_all_soft_refs,
558 size_t word_size);
559
560 // Callback from VM_G1CollectFull operation.
561 // Perform a full collection.
562 virtual void do_full_collection(bool clear_all_soft_refs);
563
564 // Resize the heap if necessary after a full collection. If this is
565 // after a collect-for allocation, "word_size" is the allocation size,
566 // and will be considered part of the used portion of the heap.
567 void resize_if_necessary_after_full_collection(size_t word_size);
568
569 // Callback from VM_G1CollectForAllocation operation.
570 // This function does everything necessary/possible to satisfy a
571 // failed allocation request (including collection, expansion, etc.)
572 HeapWord* satisfy_failed_allocation(size_t word_size,
573 AllocationContext_t context,
574 bool* succeeded);
575
576 // Attempting to expand the heap sufficiently
577 // to support an allocation of the given "word_size". If
578 // successful, perform the allocation and return the address of the
579 // allocated block, or else "NULL".
580 HeapWord* expand_and_allocate(size_t word_size, AllocationContext_t context);
581
582 // Process any reference objects discovered during
583 // an incremental evacuation pause.
584 void process_discovered_references();
585
586 // Enqueue any remaining discovered references
587 // after processing.
588 void enqueue_discovered_references();
589
590 public:
591 WorkGang* workers() const { return _workers; }
592
593 G1Allocator* allocator() {
594 return _allocator;
595 }
|
555 // GC locker being active, true otherwise
556 bool do_collection(bool explicit_gc,
557 bool clear_all_soft_refs,
558 size_t word_size);
559
560 // Callback from VM_G1CollectFull operation.
561 // Perform a full collection.
562 virtual void do_full_collection(bool clear_all_soft_refs);
563
564 // Resize the heap if necessary after a full collection. If this is
565 // after a collect-for allocation, "word_size" is the allocation size,
566 // and will be considered part of the used portion of the heap.
567 void resize_if_necessary_after_full_collection(size_t word_size);
568
569 // Callback from VM_G1CollectForAllocation operation.
570 // This function does everything necessary/possible to satisfy a
571 // failed allocation request (including collection, expansion, etc.)
572 HeapWord* satisfy_failed_allocation(size_t word_size,
573 AllocationContext_t context,
574 bool* succeeded);
575 private:
576 // Helper method for satisfy_failed_allocation()
577 HeapWord* satisfy_failed_allocation_helper(size_t word_size,
578 AllocationContext_t context,
579 bool do_gc,
580 bool clear_all_soft_refs,
581 bool expect_null_mutator_alloc_region,
582 bool* gc_succeeded);
583
584 protected:
585 // Attempting to expand the heap sufficiently
586 // to support an allocation of the given "word_size". If
587 // successful, perform the allocation and return the address of the
588 // allocated block, or else "NULL".
589 HeapWord* expand_and_allocate(size_t word_size, AllocationContext_t context);
590
591 // Process any reference objects discovered during
592 // an incremental evacuation pause.
593 void process_discovered_references();
594
595 // Enqueue any remaining discovered references
596 // after processing.
597 void enqueue_discovered_references();
598
599 public:
600 WorkGang* workers() const { return _workers; }
601
602 G1Allocator* allocator() {
603 return _allocator;
604 }
|