1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include "adapter/preview/entrance/ace_preview_helper.h"
17 
18 #include <memory>
19 #include <mutex>
20 
21 namespace OHOS::Ace::Platform {
22 namespace {
23 std::unique_ptr<AcePreviewHelper> instance_ = nullptr;
24 } // namespace
GetInstance()25 AcePreviewHelper* AcePreviewHelper::GetInstance()
26 {
27     static std::once_flag onceFlag;
28     std::call_once(onceFlag, []() {
29         instance_.reset(new AcePreviewHelper());
30     });
31     return instance_.get();
32 }
33 } // namespace OHOS::Ace::Platform
34