Method request_stop

include/stdexec/stop_token.hpp:253–287

  }

  inline auto inplace_stop_source::request_stop() noexcept -> bool
  {
    if (!__try_lock_unless_stop_requested_(true))
      return true;

    __notifying_thread_ = std::this_thread::get_id();

    // We are responsible for executing callbacks.
    while (__callbacks_ != nullptr)
    {
      auto* __callbk        = __callbacks_;
      __callbk->__prev_ptr_ = nullptr;
      __callbacks_          = __callbk->__next_;
      if (__callbacks_ != nullptr)
        __callbacks_->__prev_ptr_ = &__callbacks_;

      __state_.store(__stop_requested_flag_, STDEXEC::__std::memory_order_release);

      bool __removed_during_callback       = false;
      __callbk->__removed_during_callback_ = &__removed_during_callback;

      __callbk->__execute();

      if (!__removed_during_callback)
      {
        __callbk->__removed_during_callback_ = nullptr;
        __callbk->__callback_completed_.store(true, STDEXEC::__std::memory_order_release);
      }

      __lock_();
    }

    __state_.store(__stop_requested_flag_, STDEXEC::__std::memory_order_release);
    return false;
  }

  inline auto inplace_stop_source::__lock_() const noexcept -> uint8_t
  {