mirror of
https://github.com/openharmony/ark_js_runtime.git
synced 2026-07-25 22:15:32 -04:00
yingguofeng@huawei.com
a38b774573
Solution: Ensure that all fileds of heap object(includes free object) are not nullptr Issue:https://gitee.com/openharmony/ark_js_runtime/issues/I59PS0?from=project-issue Change-Id: I062c3a7b9289de9efbb123ec62716fa554d2cb1d Signed-off-by: yingguofeng@huawei.com <yingguofeng@huawei.com>
96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2021 Huawei Device Co., Ltd.
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "ecmascript/mem/free_object_set.h"
|
|
|
|
#include "ecmascript/free_object.h"
|
|
#include "ecmascript/mem/free_object_list.h"
|
|
|
|
namespace panda::ecmascript {
|
|
void FreeObjectSet::Free(uintptr_t begin, size_t size)
|
|
{
|
|
auto freeObject = FreeObject::Cast(begin);
|
|
ASSERT(freeObject->IsFreeObject());
|
|
freeObject->SetNext(freeObject_);
|
|
freeObject_ = freeObject;
|
|
available_ += size;
|
|
}
|
|
|
|
void FreeObjectSet::Rebuild()
|
|
{
|
|
freeObject_ = INVALID_OBJECT;
|
|
available_ = 0;
|
|
isAdded_ = false;
|
|
next_ = nullptr;
|
|
prev_ = nullptr;
|
|
}
|
|
|
|
FreeObject *FreeObjectSet::ObtainSmallFreeObject(size_t size)
|
|
{
|
|
FreeObject *curFreeObject = INVALID_OBJECT;
|
|
if (freeObject_ != INVALID_OBJECT && freeObject_->Available() >= size) {
|
|
curFreeObject = freeObject_;
|
|
freeObject_ = freeObject_->GetNext();
|
|
curFreeObject->SetNext(INVALID_OBJECT);
|
|
available_ -= curFreeObject->Available();
|
|
}
|
|
return curFreeObject;
|
|
}
|
|
|
|
FreeObject *FreeObjectSet::ObtainLargeFreeObject(size_t size)
|
|
{
|
|
FreeObject *prevFreeObject = freeObject_;
|
|
FreeObject *curFreeObject = freeObject_;
|
|
while (curFreeObject != INVALID_OBJECT) {
|
|
if (curFreeObject->Available() >= size) {
|
|
if (curFreeObject == freeObject_) {
|
|
freeObject_ = curFreeObject->GetNext();
|
|
} else {
|
|
prevFreeObject->SetNext(curFreeObject->GetNext());
|
|
}
|
|
curFreeObject->SetNext(INVALID_OBJECT);
|
|
available_ -= curFreeObject->Available();
|
|
return curFreeObject;
|
|
}
|
|
prevFreeObject = curFreeObject;
|
|
curFreeObject = curFreeObject->GetNext();
|
|
}
|
|
return INVALID_OBJECT;
|
|
}
|
|
|
|
FreeObject *FreeObjectSet::LookupSmallFreeObject(size_t size)
|
|
{
|
|
if (freeObject_ != INVALID_OBJECT && freeObject_->Available() >= size) {
|
|
return freeObject_;
|
|
}
|
|
return INVALID_OBJECT;
|
|
}
|
|
|
|
FreeObject *FreeObjectSet::LookupLargeFreeObject(size_t size)
|
|
{
|
|
if (available_ < size) {
|
|
return INVALID_OBJECT;
|
|
}
|
|
FreeObject *curFreeObject = freeObject_;
|
|
while (curFreeObject != INVALID_OBJECT) {
|
|
if (curFreeObject->Available() >= size) {
|
|
return curFreeObject;
|
|
}
|
|
curFreeObject = curFreeObject->GetNext();
|
|
}
|
|
return INVALID_OBJECT;
|
|
}
|
|
} // namespace panda::ecmascript
|