src/hotspot/share/gc/g1/g1Allocator.inline.hpp

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#ifndef SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP
#define SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP

#include "gc/g1/g1Allocator.hpp"

#include "gc/g1/g1AllocRegion.inline.hpp"
#include "gc/shared/plab.inline.hpp"
#include "memory/universe.hpp"

inline uint G1Allocator::current_node_index() const {
  return _numa->index_of_current_thread();
}

inline MutatorAllocRegion* G1Allocator::mutator_alloc_region(uint node_index) {
  assert(node_index < _num_alloc_regions, "Invalid index: %u", node_index);
  return &_mutator_alloc_regions[node_index];
}

inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region(uint node_index) {
  assert(node_index < _num_alloc_regions, "Invalid index: %u", node_index);
  return &_survivor_gc_alloc_regions[node_index];
}

inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() {
  return &_old_gc_alloc_region;
}

inline HeapWord* G1Allocator::attempt_allocation(uint node_index,
                                                 size_t min_word_size,
                                                 size_t desired_word_size,
                                                 size_t* actual_word_size) {
  HeapWord* result = mutator_alloc_region(node_index)->attempt_retained_allocation(min_word_size, desired_word_size, actual_word_size);
  if (result != nullptr) {
    return result;
  }

  return mutator_alloc_region(node_index)->attempt_allocation(min_word_size, desired_word_size, actual_word_size);
}

inline HeapWord* G1Allocator::attempt_allocation_locked(uint node_index, size_t word_size) {
  HeapWord* result = mutator_alloc_region(node_index)->attempt_allocation_locked(word_size);

  assert(result != nullptr || mutator_alloc_region(node_index)->get() == nullptr,
         "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region(node_index)->get()));
  return result;
}

inline PLAB* G1PLABAllocator::alloc_buffer(G1HeapRegionAttr dest, uint node_index) const {
  assert(dest.is_valid(),
         "Allocation buffer index out of bounds: %s", dest.get_type_str());
  assert(_dest_data[dest.type()]._alloc_buffer != nullptr,
         "Allocation buffer is null: %s", dest.get_type_str());
  return alloc_buffer(dest.type(), node_index);
}

inline PLAB* G1PLABAllocator::alloc_buffer(region_type_t dest, uint node_index) const {
  assert(dest < G1HeapRegionAttr::Num,
         "Allocation buffer index out of bounds: %u", dest);

  if (dest == G1HeapRegionAttr::Young) {
    assert(node_index < alloc_buffers_length(dest),
           "Allocation buffer index out of bounds: %u, %u", dest, node_index);
    return _dest_data[dest]._alloc_buffer[node_index];
  } else {
    return _dest_data[dest]._alloc_buffer[0];
  }
}

inline uint G1PLABAllocator::alloc_buffers_length(region_type_t dest) const {
  if (dest == G1HeapRegionAttr::Young) {
    return _allocator->num_nodes();
  } else {
    return 1;
  }
}

inline HeapWord* G1PLABAllocator::plab_allocate(G1HeapRegionAttr dest,
                                                size_t word_sz,
                                                uint node_index) {
  PLAB* buffer = alloc_buffer(dest, node_index);
  return buffer->allocate(word_sz);
}

inline HeapWord* G1PLABAllocator::allocate(G1HeapRegionAttr dest,
                                           size_t word_sz,
                                           bool* refill_failed,
                                           uint node_index) {
  HeapWord* const obj = plab_allocate(dest, word_sz, node_index);
  if (obj != nullptr) {
    return obj;
  }
  return allocate_direct_or_new_plab(dest, word_sz, refill_failed, node_index);
}

#endif // SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP