// Copyright 2020 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_HANDLES_LOCAL_HANDLES_INL_H_ #define V8_HANDLES_LOCAL_HANDLES_INL_H_ #include "src/handles/local-handles.h" #include "src/sanitizer/msan.h" namespace v8 { namespace internal { // static V8_INLINE Address* LocalHandleScope::GetHandle(LocalHeap* local_heap, Address value) { LocalHandles* handles = local_heap->handles(); Address* result = handles->scope_.next; if (result == handles->scope_.limit) { result = handles->AddBlock(); } DCHECK_LT(result, handles->scope_.limit); handles->scope_.next++; *result = value; return result; } LocalHandleScope::LocalHandleScope(LocalHeap* local_heap) { LocalHandles* handles = local_heap->handles(); local_heap_ = local_heap; prev_next_ = handles->scope_.next; prev_limit_ = handles->scope_.limit; handles->scope_.level++; } LocalHandleScope::~LocalHandleScope() { LocalHandles* handles = local_heap_->handles(); Address* old_limit = handles->scope_.limit; handles->scope_.next = prev_next_; handles->scope_.limit = prev_limit_; handles->scope_.level--; if (old_limit != handles->scope_.limit) { handles->RemoveBlocks(); old_limit = handles->scope_.limit; } // TODO(dinfuehr): Zap handles MSAN_ALLOCATED_UNINITIALIZED_MEMORY( handles->scope_.next, static_cast<size_t>(reinterpret_cast<Address>(old_limit) - reinterpret_cast<Address>(handles->scope_.next))); } } // namespace internal } // namespace v8 #endif // V8_HANDLES_LOCAL_HANDLES_INL_H_