src/zone-inl.h

// Copyright 2006-2008 the V8 project authors. All rights reserved.
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#ifndef V8_ZONE_INL_H_
#define V8_ZONE_INL_H_

#include "zone.h"
#include "v8-counters.h"

namespace v8 {
namespace internal {


inline void* Zone::New(int size) {
  ASSERT(AssertNoZoneAllocation::allow_allocation());
  ASSERT(ZoneScope::nesting() > 0);
  // Round up the requested size to fit the alignment.
  size = RoundUp(size, kAlignment);

  // Check if the requested size is available without expanding.
  Address result = position_;
  if ((position_ += size) > limit_) result = NewExpand(size);

  // Check that the result has the proper alignment and return it.
  ASSERT(IsAddressAligned(result, kAlignment, 0));
  return reinterpret_cast<void*>(result);
}


template <typename T>
T* Zone::NewArray(int length) {
  return static_cast<T*>(Zone::New(length * sizeof(T)));
}


bool Zone::excess_allocation() {
  return segment_bytes_allocated_ > zone_excess_limit_;
}


void Zone::adjust_segment_bytes_allocated(int delta) {
  segment_bytes_allocated_ += delta;
  Counters::zone_segment_bytes.Set(segment_bytes_allocated_);
}


template <typename Config>
ZoneSplayTree<Config>::~ZoneSplayTree() {
  // Reset the root to avoid unneeded iteration over all tree nodes
  // in the destructor.  For a zone-allocated tree, nodes will be
  // freed by the Zone.
  SplayTree<Config, ZoneListAllocationPolicy>::ResetRoot();
}


} }  // namespace v8::internal

#endif  // V8_ZONE_INL_H_