HASE Userguide
Hase++ manual - predicates
The predicates can be used to filter incoming events and to select the one
which we are expecting. The criterion can be the incoming port (sim_from_port),
the tag carried by the event(sim_type_p) or any user-defined predicate.
In order to define your own predicate you must define a class which extends
the sim_predicate class and override the int match(sim_event & ev)
method.
SIM_ANY
This is a constant available in any Hase++ project.
The predicate matches any event. Only useful when using the
sim_select command:
sim_select(SIM_ANY, ev); // will dequeue any event.
sim_from_port
- Constructor:
- sim_from_port(sim_port & p)
This predicate checks if an event comes from the port given in the constructor.
- Example:
-
sim_port alua;
sim_event ev;
sim_from_port ina(alua);
if (sim_waiting(ev, ina)>0)
// execute some behaviour when receiving an event from the port alua.
sim_type_p
- Constructors:
- sim_type_p(int type1)
sim_type_p(int type1, int type2)
sim_type_p(int type1, int type2, int type3)
sim_type_p(int type1, int type2, int type3, int type4)
This predicate checks if an event is carrying on the type1, type2, type3
or type4 tags. A constructor with an array of int should be added soon.
- Example:
-
sim_type_p expected(CLOCK, MEMORY);
sim_event ev;
if (sim_waiting(ev, expected)>0))
// execute some behaviour when receiving an event carrying
either the tag CLOCK or the tag MEMORY.
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