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 #ifndef FFRT_TASK_STATE_HPP 17 #define FFRT_TASK_STATE_HPP 18 19 #include <array> 20 #include <string_view> 21 #include <functional> 22 #include <mutex> 23 #include <shared_mutex> 24 #include <chrono> 25 26 namespace ffrt { 27 struct TaskCtx; 28 29 class TaskState { 30 public: 31 enum State { PENDING, READY, RUNNING, BLOCKED, EXITED, MAX }; 32 using Op = typename std::function<bool(TaskCtx*)>; 33 34 TaskState() = default; 35 36 TaskState(const TaskState&) = delete; 37 TaskState(TaskState&&) = delete; 38 39 TaskState& operator=(const TaskState&) = delete; 40 TaskState& operator=(TaskState&&) = delete; 41 42 bool operator==(State state) const 43 { 44 return this->curState == state; 45 } 46 47 bool operator!=(State state) const 48 { 49 return this->curState != state; 50 } 51 operator()52 State operator()() const 53 { 54 return curState; 55 } 56 CurState()57 State CurState() const 58 { 59 return curState; 60 } 61 SetCurState(State state)62 void SetCurState(State state) 63 { 64 curState = state; 65 } 66 PreState()67 State PreState() const 68 { 69 return preState; 70 } 71 String()72 const char* String() const 73 { 74 return String(curState); 75 } 76 WaitingTime()77 uint64_t WaitingTime() const 78 { 79 #if defined(TRACE_TASKSTAT_LOG_ENABLE) && (TRACE_TASKSTAT_LOG_ENABLE == 1) 80 return stat.WaitingTime(); 81 #else 82 return 0; 83 #endif 84 } 85 RunningTime()86 uint64_t RunningTime() const 87 { 88 #if defined(TRACE_TASKSTAT_LOG_ENABLE) && (TRACE_TASKSTAT_LOG_ENABLE == 1) 89 return stat.RunningTime(); 90 #else 91 return 0; 92 #endif 93 } 94 RegisterOps(State state,Op && op)95 static void RegisterOps(State state, Op&& op) 96 { 97 ops[static_cast<size_t>(state)] = op; 98 } 99 100 static int OnTransition(State state, TaskCtx* task, Op&& op = Op()); 101 String(State state)102 static const char* String(State state) 103 { 104 static const char* m[] = {"PENDING", "READY", "RUNNING", "BLOCKED", "EXITED", "MAX"}; 105 106 return m[static_cast<size_t>(state)]; 107 } 108 109 private: 110 class TaskStateStat { 111 public: 112 uint64_t WaitingTime() const; 113 uint64_t RunningTime() const; 114 115 inline void Count(TaskCtx* task); 116 117 private: 118 inline void Count(TaskState::State state); 119 inline uint64_t CalcDuration(TaskState::State preState, TaskState::State curState) const; 120 121 std::array<std::chrono::steady_clock::time_point, static_cast<size_t>(TaskState::State::MAX)> timepoint; 122 }; 123 124 #if defined(TRACE_TASKSTAT_LOG_ENABLE) && (TRACE_TASKSTAT_LOG_ENABLE == 1) 125 TaskStateStat stat; 126 #endif 127 128 State curState = PENDING; 129 State preState = PENDING; 130 131 static std::array<Op, static_cast<size_t>(TaskState::MAX)> ops; 132 }; 133 } // namespace ffrt 134 135 #endif 136