Ramarao V 1 Posted March 6, 2019 Report Share Posted March 6, 2019 what are the major differences between sc_port and sc_export? plafratt 1 Quote Link to post Share on other sites
David Black 185 Posted March 6, 2019 Report Share Posted March 6, 2019 Port requires a pointer towards the object containing implementations of methods specified in the interface. Export provides the very pointer that port needs. Port goes from caller towards callee. Export goes from callee towards caller. Pseudo-graphically: // +----------------------------------------------------------------------------------+ // |struct Top : sc_module { | // | | // | initiator.p1.bind( target.x1 ); | // | | // | Initiator initiator{"orgin"}; Target target{"target"}; | // | +------------------------------------+ +--------------------------------------+ | // | |struct Initiator : sc_module { | |struct Target : sc_module { | | // | | | | | | // | | sc_port<IF> p1{"p1"}; | | sc_export<IF> x1{"x1"}; | | // | | caller.p0.bind( p1 ); | | x1.bind( callee.x0 ); | | // | | | | | | // | | Caller caller{"caller"}; | | Callee callee{"callee"}; | | // | | +----------------------------+ | | +------------------------------+ | | // | | |struct Caller : sc_module { | | | |struct Callee : sc_module, IF | | | // | | | | | | | | | | // | | | sc_port<IF> p0{"p0"}; | | | | sc_export<IF> x0{"x0"}; | | | // | | | SC_THREAD(thread1); | | | | Data m_data; | | | // | | | | | | | x0.bind(*this); | | | // | | | | | | | | | | // | | | .------------------. | | | | .----------------------. | | | // | | | | void thread1() | | | | | | void xfer( data& d ) | | | | // | | | | { | | | | | | { | | | | // | | | | p0->xfer( v ); | [p0]->[p1]->[x1]->[x0] | // Save/load d | | | | // | | | | } | | | | | | auto t = d; | | | | // | | | | | | | | | | d = m_data; | | | | // | | | | | | | | | | // Transform t | | | | // | | | | | | | | | | m_data = t; | | | | // | | | | | | | | | | } | | | | // | | | '------------------' | | | | '----------------------' | | | // | | | | | | | | | | // | | |}; | | | | | | | // | | +----------------------------+ | | +------------------------------+ | | // | | | | | | // | |}; | |}; | | // | +------------------------------------+ +--------------------------------------+ | // | | // |}; | // +----------------------------------------------------------------------------------+ plafratt, KiranK and maehne 2 1 Quote Link to post Share on other sites
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