370   return new_obj;

   370   return new_obj;

   371 }

   371 }

   372 

   372 

   373 size_t G1CollectedHeap::humongous_obj_size_in_regions(size_t word_size) {

   373 size_t G1CollectedHeap::humongous_obj_size_in_regions(size_t word_size) {

   374   assert(is_humongous(word_size), "Object of size " SIZE_FORMAT " must be humongous here", word_size);

   374   assert(is_humongous(word_size), "Object of size " SIZE_FORMAT " must be humongous here", word_size);

   376 }

   376 }

   377 

   377 

   378 // If could fit into free regions w/o expansion, try.

   378 // If could fit into free regions w/o expansion, try.

   379 // Otherwise, if can expand, do so.

   379 // Otherwise, if can expand, do so.

   380 // Otherwise, if using ex regions might help, try with ex given back.

   380 // Otherwise, if using ex regions might help, try with ex given back.

  1604   return NULL;

  1604   return NULL;

  1605 }

  1605 }

  1606 

  1606 

  1607 bool G1CollectedHeap::expand(size_t expand_bytes, WorkGang* pretouch_workers, double* expand_time_ms) {

  1607 bool G1CollectedHeap::expand(size_t expand_bytes, WorkGang* pretouch_workers, double* expand_time_ms) {

  1608   size_t aligned_expand_bytes = ReservedSpace::page_align_size_up(expand_bytes);

  1608   size_t aligned_expand_bytes = ReservedSpace::page_align_size_up(expand_bytes);

  1610                                        HeapRegion::GrainBytes);

  1610                                        HeapRegion::GrainBytes);

  1611 

  1611 

  1612   log_debug(gc, ergo, heap)("Expand the heap. requested expansion amount: " SIZE_FORMAT "B expansion amount: " SIZE_FORMAT "B",

  1612   log_debug(gc, ergo, heap)("Expand the heap. requested expansion amount: " SIZE_FORMAT "B expansion amount: " SIZE_FORMAT "B",

  1613                             expand_bytes, aligned_expand_bytes);

  1613                             expand_bytes, aligned_expand_bytes);

  1614 

  1614 

  1645 }

  1645 }

  1646 

  1646 

  1647 void G1CollectedHeap::shrink_helper(size_t shrink_bytes) {

  1647 void G1CollectedHeap::shrink_helper(size_t shrink_bytes) {

  1648   size_t aligned_shrink_bytes =

  1648   size_t aligned_shrink_bytes =

  1649     ReservedSpace::page_align_size_down(shrink_bytes);

  1649     ReservedSpace::page_align_size_down(shrink_bytes);

  1651                                          HeapRegion::GrainBytes);

  1651                                          HeapRegion::GrainBytes);

  1652   uint num_regions_to_remove = (uint)(shrink_bytes / HeapRegion::GrainBytes);

  1652   uint num_regions_to_remove = (uint)(shrink_bytes / HeapRegion::GrainBytes);

  1653 

  1653 

  1654   uint num_regions_removed = _hrm.shrink_by(num_regions_to_remove);

  1654   uint num_regions_removed = _hrm.shrink_by(num_regions_to_remove);

  1655   size_t shrunk_bytes = num_regions_removed * HeapRegion::GrainBytes;

  1655   size_t shrunk_bytes = num_regions_removed * HeapRegion::GrainBytes;

  2433 }

  2433 }

  2434 

  2434 

  2435 // For G1 TLABs should not contain humongous objects, so the maximum TLAB size

  2435 // For G1 TLABs should not contain humongous objects, so the maximum TLAB size

  2436 // must be equal to the humongous object limit.

  2436 // must be equal to the humongous object limit.

  2437 size_t G1CollectedHeap::max_tlab_size() const {

  2437 size_t G1CollectedHeap::max_tlab_size() const {

  2439 }

  2439 }

  2440 

  2440 

  2441 size_t G1CollectedHeap::unsafe_max_tlab_alloc(Thread* ignored) const {

  2441 size_t G1CollectedHeap::unsafe_max_tlab_alloc(Thread* ignored) const {

  2442   AllocationContext_t context = AllocationContext::current();

  2442   AllocationContext_t context = AllocationContext::current();

  2443   return _allocator->unsafe_max_tlab_alloc(context);

  2443   return _allocator->unsafe_max_tlab_alloc(context);