Make Events Faster

[Pherring04]

It'd be nice if events weren't slow. Someone should look into that.

[alexlin0]

There is a way to implement fast events with the (Just in Time) JITInputFile. You can compile and load c++ code as part of input processing and you can implement events in c++ code.

Create a c++ file in your run directory, e.g. event.cpp that includes S_source.hh (to give you access to all of the sim objects) and use extern "C".

#include "../S_source.hh"

extern "C" int stop_events() {
    if ( simobject.class.variable == true ) {
        exec_terminate_with_return(0, __FILE__, __LINE__, "variable was true");
    }
    return 0;
}

Then include these lines in your input file that will compile event.cpp at runtime and schedule stop_events to be called every 0.1 seconds.

trick.jit_compile("RUN_dir/event.cpp")
trick.jit_add_event("stop_events", "stop_events", 0.1)

Events can cut the speed of your sim in half or more. This method does not slow the sim.