mirror of https://github.com/alibaba/MNN.git
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
/*
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* Copyright (c) 2023 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 _REF_FUNCTION_HEADER_H_
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#define _REF_FUNCTION_HEADER_H_
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#include <atomic>
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#include "dfx/log/ffrt_log_api.h"
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#include "c/type_def.h"
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namespace ffrt {
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enum FuncHeaderStatus {
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NOT_SUBMIT = 1,
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ALREADY_SUBMIT = 2,
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};
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void DestroyFunctionWrapper(ffrt_function_header_t* f, ffrt_function_kind_t kind);
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class RefFunctionHeader {
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public:
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RefFunctionHeader(ffrt_function_header_t* header) : functionHeader_(header) {}
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bool IncDeleteRef()
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{
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uint16_t exp = NOT_SUBMIT;
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uint16_t des = ALREADY_SUBMIT;
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return rc.compare_exchange_strong(exp, des, std::memory_order_relaxed);
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}
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void DecDeleteRef()
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{
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auto v = rc.fetch_sub(1);
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if (v == 1) {
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delete this;
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}
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}
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ffrt_function_header_t* functionHeader_ = nullptr;
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std::atomic_uint16_t rc = 1;
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private:
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~RefFunctionHeader()
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{
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ffrt::DestroyFunctionWrapper(functionHeader_, ffrt_function_kind_general);
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}
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};
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}
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#endif |