LCOV - code coverage report
Current view: top level - src/actor - blocking_actor.cpp (source / functions) Coverage Total Hit
Test: HPActor Coverage Lines: 85.7 % 56 48
Test Date: 2026-05-20 02:24:49 Functions: 63.6 % 11 7
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                 :             : #include <hpactor/actor/blocking_actor.hpp>
      16                 :             : #include <hpactor/core/actor_system.hpp>
      17                 :             : 
      18                 :             : namespace hpactor {
      19                 :             : 
      20                 :           5 : BlockingActor::BlockingActor(ActorContext* ctx, ActorSystem& sys)
      21                 :           5 :     : LocalActor(ctx, sys) {}
      22                 :             : 
      23                 :           0 : BlockingActor::BlockingActor(ActorId id, ActorContext* ctx, ActorSystem& sys)
      24                 :           0 :     : LocalActor(id, ctx, sys) {}
      25                 :             : 
      26                 :           5 : BlockingActor::~BlockingActor() {
      27                 :           5 :     running_.store(false, std::memory_order_release);
      28                 :           5 :     cv_.notify_all();
      29                 :           5 :     if (thread_.joinable()) {
      30                 :           4 :         thread_.join();
      31                 :             :     }
      32                 :           5 : }
      33                 :             : 
      34                 :           0 : void BlockingActor::receive(TypedMessage& /*msg*/) {
      35                 :             :     // Default no-op. Subclasses override this to handle messages.
      36                 :           0 : }
      37                 :             : 
      38                 :           4 : void BlockingActor::on_activate() {
      39                 :           4 :     LocalActor::on_activate();
      40                 :             : 
      41                 :             :     // Wire continuation callback on the mailbox so that when a message
      42                 :             :     // transitions the mailbox from empty to non-empty, the condition
      43                 :             :     // variable is signalled and the blocking thread wakes up.
      44                 :           4 :     if (mailbox_) {
      45                 :           4 :         mailbox_->set_continuation_callback([this]() {
      46                 :             :             {
      47                 :           1 :                 std::lock_guard<std::mutex> lock(cv_mutex_);
      48                 :           1 :                 message_arrived_.store(true, std::memory_order_release);
      49                 :           1 :             }
      50                 :           1 :             cv_.notify_one();
      51                 :           1 :         });
      52                 :             :     }
      53                 :             : 
      54                 :           4 :     running_.store(true, std::memory_order_release);
      55                 :           4 :     thread_ = std::thread(&BlockingActor::thread_loop, this);
      56                 :           4 : }
      57                 :             : 
      58                 :           1 : void BlockingActor::on_deactivate() {
      59                 :           1 :     running_.store(false, std::memory_order_release);
      60                 :           1 :     cv_.notify_all();
      61                 :           1 :     if (thread_.joinable()) {
      62                 :           0 :         thread_.join();
      63                 :             :     }
      64                 :           1 :     LocalActor::on_deactivate();
      65                 :           1 : }
      66                 :             : 
      67                 :           4 : void BlockingActor::thread_loop() {
      68                 :           4 :     actor_state_.set(ActorState::kRunning);
      69                 :             : 
      70                 :           5 :     while (running_.load(std::memory_order_acquire)) {
      71                 :           5 :         TypedMessage msg;
      72                 :             : 
      73                 :             :         {
      74                 :           5 :             std::unique_lock<std::mutex> lock(cv_mutex_);
      75                 :             : 
      76                 :             :             // Try non-blocking pop first
      77                 :           5 :             if (mailbox_ && mailbox_->try_pop(msg)) {
      78                 :           0 :                 message_arrived_.store(false, std::memory_order_release);
      79                 :             :             } else {
      80                 :             :                 // Block until a message arrives or we're shutting down
      81                 :           5 :                 actor_state_.set(ActorState::kIdle);
      82                 :           5 :                 cv_.wait(lock, [this]() {
      83                 :          19 :                     return message_arrived_.load(std::memory_order_acquire) ||
      84                 :          19 :                            !running_.load(std::memory_order_acquire);
      85                 :             :                 });
      86                 :           5 :                 if (!running_.load(std::memory_order_acquire))
      87                 :           4 :                     break;
      88                 :             : 
      89                 :           1 :                 message_arrived_.store(false, std::memory_order_release);
      90                 :           1 :                 actor_state_.set(ActorState::kRunning);
      91                 :             : 
      92                 :             :                 // Retry pop after wakeup
      93                 :           1 :                 if (mailbox_)
      94                 :           1 :                     mailbox_->try_pop(msg);
      95                 :             :             }
      96                 :           5 :         }
      97                 :             : 
      98                 :             :         // Dispatch the message via the virtual receive()
      99                 :           1 :         if (msg.type_id() != TypeTag::Invalid) {
     100                 :           1 :             receive(msg);
     101                 :             :         }
     102                 :           5 :     }
     103                 :             : 
     104                 :           4 :     actor_state_.set(ActorState::kTerminated);
     105                 :           4 : }
     106                 :             : 
     107                 :           0 : void BlockingActor::await_all_other_actors_done() {
     108                 :             :     // Stub: in a full implementation this would poll ActorSystem for
     109                 :             :     // active actor count and block until only this actor remains.
     110                 :           0 : }
     111                 :             : 
     112                 :             : } // namespace hpactor
        

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