1 /*
2 * Copyright (c) 2022 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 "taskscheduler_fuzzer.h"
17
18 #include <chrono>
19 #include <thread>
20 #include "fuzzer/FuzzedDataProvider.h"
21 #include "task_scheduler.h"
22
23 namespace OHOS {
24 static constexpr int MAX_DELAY_TIME = 5;
25 static constexpr int MAX_INTERVAL_TIME = 3;
AtFuzz(FuzzedDataProvider & provider)26 void AtFuzz(FuzzedDataProvider &provider)
27 {
28 uint32_t time = provider.ConsumeIntegral<uint32_t>();
29 TaskScheduler taskScheduler;
30 std::chrono::steady_clock::time_point tp = std::chrono::steady_clock::now() +
31 std::chrono::duration<int>(time % MAX_DELAY_TIME);
32 auto task = taskScheduler.At(tp, []() { });
33 std::this_thread::sleep_for(std::chrono::seconds(MAX_INTERVAL_TIME));
34 taskScheduler.Remove(task);
35 }
36
EveryFUZZ(FuzzedDataProvider & provider)37 void EveryFUZZ(FuzzedDataProvider &provider)
38 {
39 int time = provider.ConsumeIntegral<int>();
40 TaskScheduler taskScheduler;
41 std::chrono::duration<int> delay(time % MAX_DELAY_TIME);
42 std::chrono::duration<int> interval(time % MAX_INTERVAL_TIME);
43 taskScheduler.Every(delay, interval, []() { });
44 std::this_thread::sleep_for(std::chrono::seconds(MAX_INTERVAL_TIME));
45 taskScheduler.Every(0, delay, interval, []() { });
46 taskScheduler.Every(1, delay, interval, []() { });
47 std::this_thread::sleep_for(std::chrono::seconds(MAX_INTERVAL_TIME));
48 taskScheduler.Every(interval, []() { });
49 taskScheduler.Clean();
50 }
51
ResetFuzz(FuzzedDataProvider & provider)52 void ResetFuzz(FuzzedDataProvider &provider)
53 {
54 int time = provider.ConsumeIntegral<int>();
55 TaskScheduler taskScheduler;
56 std::chrono::duration<int> interval(time % MAX_INTERVAL_TIME);
57 std::chrono::steady_clock::time_point tp1 = std::chrono::steady_clock::now() +
58 std::chrono::duration<int>(MAX_DELAY_TIME / 2);
59 auto schedulerTask = taskScheduler.At(tp1, []() {});
60 taskScheduler.Reset(schedulerTask, interval);
61 }
62 } // namespace OHOS
63 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)64 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
65 {
66 /* Run your code on data */
67 FuzzedDataProvider provider(data, size);
68 OHOS::AtFuzz(provider);
69 OHOS::EveryFUZZ(provider);
70 OHOS::ResetFuzz(provider);
71 return 0;
72 }