1 /*
2  * Copyright (c) 2020 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 "token_generate.h"
17 
18 #include <ctime>
19 
20 namespace OHOS {
21 constexpr uint8_t TIME_LENGTH = 32;
22 int32_t TokenGenerate::token_ = 0;
23 
GenerateToken()24 uint64_t TokenGenerate::GenerateToken()
25 {
26     int curSecond = time(nullptr);
27     if (token_ == INT32_MAX - 1) {
28         token_ = 0;
29     }
30 
31     return (((uint64_t) curSecond << TIME_LENGTH) + ((uint64_t) token_++));
32 }
33 }  // namespace OHOS
34