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https://gitee.com/openharmony/arkcompiler_ets_runtime
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a058d1d90d
link #I6B3YL Change-Id: I5c324f7b2c75ebc894ade3f3863892b8bbcf1f73 Signed-off-by: yingguofeng@huawei.com <yingguofeng@huawei.com>
111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMASCRIPT_HANDLE_SCOPE_H
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#define ECMASCRIPT_HANDLE_SCOPE_H
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#include "ecmascript/js_tagged_value.h"
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#include "ecmascript/js_thread.h"
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#ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK
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#include "ecmascript/platform/backtrace.h"
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#include "ecmascript/log_wrapper.h"
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#include "ecmascript/mem/clock_scope.h"
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#endif
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namespace panda::ecmascript {
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/*
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* Handles are only valid within a HandleScope. When a handle is created for an object a cell is allocated in the
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* current HandleScope.
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*/
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class EcmaHandleScope {
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public:
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inline explicit EcmaHandleScope(JSThread *thread) :
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thread_(thread), prevNext_(thread->handleScopeStorageNext_), prevEnd_(thread->handleScopeStorageEnd_),
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prevHandleStorageIndex_(thread->currentHandleStorageIndex_)
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{
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#ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK
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thread_->HandleScopeCountAdd();
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prevHandleScope_ = thread->GetLastHandleScope();
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thread_->SetLastHandleScope(this);
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#endif
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}
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inline ~EcmaHandleScope()
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{
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#ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK
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thread_->HandleScopeCountDec();
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thread_->SetLastHandleScope(prevHandleScope_);
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prevHandleScope_ = nullptr;
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#endif
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thread_->handleScopeStorageNext_ = prevNext_;
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if (thread_->handleScopeStorageEnd_ != prevEnd_) {
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thread_->handleScopeStorageEnd_ = prevEnd_;
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thread_->ShrinkHandleStorage(prevHandleStorageIndex_);
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}
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}
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static inline uintptr_t PUBLIC_API NewHandle(JSThread *thread, JSTaggedType value)
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{
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#ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK
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// Each Handle must be managed by HandleScope, otherwise it may cause Handle leakage.
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if (thread->handleScopeCount_ <= 0) {
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LOG_ECMA(ERROR) << "New handle must be in handlescope" << thread->handleScopeCount_;
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}
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static const long MAYBE_HANDLE_LEAK_TIME_MS = 5000;
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if (thread->GetLastHandleScope() != nullptr) {
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float totalSpentTime = thread->GetLastHandleScope()->scope_.TotalSpentTime();
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if (totalSpentTime >= MAYBE_HANDLE_LEAK_TIME_MS) {
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LOG_ECMA(INFO) << "New handle in scope count:" << thread->handleScopeCount_
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<< ", time:" << totalSpentTime << "ms";
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std::ostringstream stack;
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Backtrace(stack, true);
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LOG_ECMA(INFO) << stack.str();
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}
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}
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#endif
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#if ECMASCRIPT_ENABLE_NEW_HANDLE_CHECK
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thread->CheckJSTaggedType(value);
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#endif
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auto result = thread->handleScopeStorageNext_;
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if (result == thread->handleScopeStorageEnd_) {
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result = reinterpret_cast<JSTaggedType *>(thread->ExpandHandleStorage());
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}
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// NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
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thread->handleScopeStorageNext_ = result + 1;
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*result = value;
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return reinterpret_cast<uintptr_t>(result);
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}
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JSThread *GetThread() const
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{
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return thread_;
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}
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private:
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JSThread *thread_;
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JSTaggedType *prevNext_;
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JSTaggedType *prevEnd_;
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int prevHandleStorageIndex_ {-1};
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#ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK
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ClockScope scope_;
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EcmaHandleScope *prevHandleScope_ {nullptr};
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#endif
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NO_COPY_SEMANTIC(EcmaHandleScope);
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NO_MOVE_SEMANTIC(EcmaHandleScope);
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};
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_HANDLE_SCOPE_H
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