ikan Uploader :
Directory : /home/ubuntu/node-v16.18.1/deps/v8/src/heap/
Upload File : |
| Current File : //home/ubuntu/node-v16.18.1/deps/v8/src/heap/code-object-registry.cc |
// 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.
#include "src/heap/code-object-registry.h"
#include <algorithm>
#include "src/base/logging.h"
namespace v8 {
namespace internal {
void CodeObjectRegistry::RegisterNewlyAllocatedCodeObject(Address code) {
if (is_sorted_) {
is_sorted_ =
(code_object_registry_.empty() || code_object_registry_.back() < code);
}
code_object_registry_.push_back(code);
}
void CodeObjectRegistry::RegisterAlreadyExistingCodeObject(Address code) {
DCHECK(is_sorted_);
DCHECK(code_object_registry_.empty() || code_object_registry_.back() < code);
code_object_registry_.push_back(code);
}
void CodeObjectRegistry::Clear() {
code_object_registry_.clear();
is_sorted_ = true;
}
void CodeObjectRegistry::Finalize() {
DCHECK(is_sorted_);
code_object_registry_.shrink_to_fit();
}
bool CodeObjectRegistry::Contains(Address object) const {
if (!is_sorted_) {
std::sort(code_object_registry_.begin(), code_object_registry_.end());
is_sorted_ = true;
}
return (std::binary_search(code_object_registry_.begin(),
code_object_registry_.end(), object));
}
Address CodeObjectRegistry::GetCodeObjectStartFromInnerAddress(
Address address) const {
if (!is_sorted_) {
std::sort(code_object_registry_.begin(), code_object_registry_.end());
is_sorted_ = true;
}
// The code registry can't be empty, else the code object can't exist.
DCHECK(!code_object_registry_.empty());
// std::upper_bound returns the first code object strictly greater than
// address, so the code object containing the address has to be the previous
// one.
auto it = std::upper_bound(code_object_registry_.begin(),
code_object_registry_.end(), address);
// The address has to be contained in a code object, so necessarily the
// address can't be smaller than the first code object.
DCHECK_NE(it, code_object_registry_.begin());
return *(--it);
}
} // namespace internal
} // namespace v8
Kontol Shell Bypass