Active_object Struct Reference

Active object More...

Inheritance diagram for Active_object:

Collaboration diagram for Active_object:

Public Types
typedef function< void()>	Command

Public Member Functions
	Active_object (Interface &s)
	~Active_object ()
int	method () override
Public Member Functions inherited from Interface
virtual int	method ()=0
virtual	~Interface ()=default

Public Attributes
Interface &	subject

Protected Attributes
Synchronized_queue< Command >	cmd_q
thread	th

Detailed Description

Active object

Revisiting the Active Object Pattern - with C++11 Closures

Definition at line 752 of file patterns.cpp.

Member Typedef Documentation

Command

typedef function<void()> Active_object::Command

Definition at line 760 of file patterns.cpp.

Constructor & Destructor Documentation

Active_object()

Active_object::Active_object ( Interface &  s )

inline

Definition at line 762 of file patterns.cpp.

        : subject(s)
    {
        th = thread([this] {
            while (true) {
                auto cmd = cmd_q.pull();
                if (!cmd.has_value())
                    break;
                cmd.value()();
            }
        });
    }

~Active_object()

Active_object::~Active_object ( )

inline

Definition at line 774 of file patterns.cpp.

                     {
        cmd_q.stop = true;
        cmd_q.cv.notify_one();
        th.join();
    }

Member Function Documentation

method()

int Active_object::method ( )

inlineoverridevirtual

Implements Interface.

Definition at line 780 of file patterns.cpp.

                          {
        promise<int> p;
        future f = p.get_future();
        cmd_q.push([&p, this] { p.set_value(subject.method());});
        return f.get();
    }

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Member Data Documentation

cmd_q

Synchronized_queue<Command> Active_object::cmd_q

protected

Definition at line 788 of file patterns.cpp.

subject

Interface& Active_object::subject

Definition at line 761 of file patterns.cpp.

th

thread Active_object::th

protected

Definition at line 789 of file patterns.cpp.

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The documentation for this struct was generated from the following file:

• patterns.cpp