LCOV - code coverage report
Current view: top level - include/hpactor/actor - actor_state.hpp (source / functions) Coverage Total Hit
Test: HPActor Coverage Lines: 100.0 % 19 19
Test Date: 2026-05-20 02:24:49 Functions: 100.0 % 9 9
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: - 0 0

             Branch data     Line data    Source code
       1                 :             : // Copyright 2026 HPActor Contributors
       2                 :             : //
       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                 :             : #pragma once
      16                 :             : 
      17                 :             : #include <atomic>
      18                 :             : #include <cstdint>
      19                 :             : 
      20                 :             : namespace hpactor {
      21                 :             : 
      22                 :             : // ActorState: atomic state encoding for coroutine actor lifecycle
      23                 :             : // States: Idle → Ready → Running → IOWaiting / Terminated
      24                 :             : class ActorState {
      25                 :             :   public:
      26                 :             :     static constexpr uint32_t kIdle = 0x01;
      27                 :             :     static constexpr uint32_t kReady = 0x02;
      28                 :             :     static constexpr uint32_t kRunning = 0x04;
      29                 :             :     static constexpr uint32_t kIOWaiting = 0x08;
      30                 :             :     static constexpr uint32_t kTerminated = 0x10;
      31                 :             :     static constexpr uint32_t kMask = 0x1F;
      32                 :             : 
      33                 :         144 :     ActorState() : state_(kIdle) {}
      34                 :             :     explicit ActorState(uint32_t initial) : state_(initial) {}
      35                 :             : 
      36                 :         533 :     uint32_t get() const {
      37                 :        1066 :         return state_.load(std::memory_order_acquire);
      38                 :             :     }
      39                 :             : 
      40                 :             :     // CAS transition. Returns true if successful.
      41                 :         485 :     bool cas(uint32_t expected, uint32_t desired) {
      42                 :         485 :         return state_.compare_exchange_strong(expected, desired,
      43                 :             :                                               std::memory_order_acq_rel,
      44                 :         485 :                                               std::memory_order_acquire);
      45                 :             :     }
      46                 :             : 
      47                 :         373 :     void set(uint32_t s) {
      48                 :         373 :         state_.store(s, std::memory_order_release);
      49                 :         373 :     }
      50                 :             : 
      51                 :         361 :     bool is_idle() const {
      52                 :         361 :         return get() == kIdle;
      53                 :             :     }
      54                 :           3 :     bool is_ready() const {
      55                 :           3 :         return get() == kReady;
      56                 :             :     }
      57                 :           5 :     bool is_running() const {
      58                 :           5 :         return get() == kRunning;
      59                 :             :     }
      60                 :          12 :     bool is_io_waiting() const {
      61                 :          12 :         return get() == kIOWaiting;
      62                 :             :     }
      63                 :           2 :     bool is_terminated() const {
      64                 :           2 :         return get() == kTerminated;
      65                 :             :     }
      66                 :             : 
      67                 :             :   private:
      68                 :             :     std::atomic<uint32_t> state_;
      69                 :             : };
      70                 :             : 
      71                 :             : } // namespace hpactor
        

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