diff options
Diffstat (limited to 'deps/v8/src/identity-map.cc')
| -rw-r--r-- | deps/v8/src/identity-map.cc | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/deps/v8/src/identity-map.cc b/deps/v8/src/identity-map.cc index b652d6a6db..6a3bd4ca61 100644 --- a/deps/v8/src/identity-map.cc +++ b/deps/v8/src/identity-map.cc @@ -11,7 +11,7 @@ namespace v8 { namespace internal { static const int kInitialIdentityMapSize = 4; -static const int kResizeFactor = 4; +static const int kResizeFactor = 2; IdentityMapBase::~IdentityMapBase() { // Clear must be called by the subclass to avoid calling the virtual @@ -87,7 +87,8 @@ void* IdentityMapBase::DeleteIndex(int index) { size_--; DCHECK_GE(size_, 0); - if (size_ * kResizeFactor < capacity_ / kResizeFactor) { + if (capacity_ > kInitialIdentityMapSize && + size_ * kResizeFactor < capacity_ / kResizeFactor) { Resize(capacity_ / kResizeFactor); return ret_value; // No need to fix collisions as resize reinserts keys. } @@ -194,6 +195,14 @@ void* IdentityMapBase::DeleteEntry(Object* key) { return DeleteIndex(index); } +Object* IdentityMapBase::KeyAtIndex(int index) const { + DCHECK_LE(0, index); + DCHECK_LT(index, capacity_); + DCHECK_NE(keys_[index], heap_->not_mapped_symbol()); + CHECK(is_iterable()); // Must be iterable to access by index; + return keys_[index]; +} + IdentityMapBase::RawEntry IdentityMapBase::EntryAtIndex(int index) const { DCHECK_LE(0, index); DCHECK_LT(index, capacity_); |