+public:
+ SemAcquisitionImpl(actor::ActorImpl* issuer, SemaphoreImpl* sem) : issuer_(issuer), semaphore_(sem) {}
+ SemaphoreImplPtr get_semaphore() { return semaphore_; }
+ actor::ActorImpl* get_issuer() { return issuer_; }
+
+ bool test(actor::ActorImpl* issuer = nullptr) override { return granted_; }
+ void wait_for(actor::ActorImpl* issuer, double timeout) override;
+ void finish() override;
+ void cancel() override;
+ void set_exception(actor::ActorImpl* issuer) override
+ { /* nothing to do */
+ }
+};