Source code for atomiq.heros

import sys
from atomiq.helper import dummy_decorator




def get_heros():
    """
    To import heros, we have to play tricks here. Since the artiq worker calls our code
    in the artiq.master.worker_impl.examine function and afterwards removes the imported
    modules from sys.modules. The PyO3 used for the python zenoh bindings does not like this
    since then every subsequent `import heros` will reinitialize the PyO3 rust extension, leading
    to the error

        PyO3 modules compiled for CPython 3.8 or older may only be initialized once per interpreter process

    To work around this, we save a reference to the heros module in the sys module and use this reference if
    it exists. We use the sys module since it should always exist.
    """
    if hasattr(sys, "heros"):
        return sys.heros
    else:
        try:
            import heros
            sys.heros = heros
            return heros
        except ImportError:
            return None



heros = get_heros()

if heros is not None:
    LocalHERO = heros.heros.LocalHERO
    event = heros.event
else:
    LocalHERO = object
    event = dummy_decorator




class AtomiqHERO(LocalHERO):
    name: str = ""
    rid: int = -1
    chunksize = -1

    def __init__(self, experiment):
        self.experiment = experiment
        self.name = experiment.__class__.__name__
        self.rid = experiment.scheduler.rid
        self.chunksize = experiment.CHUNKSIZE

        super().__init__(f"atomiq-run-{self.experiment.scheduler.rid}")

    @property
    def step_counter(self):
        return int(self.experiment.step_counter)

    @property
    def identifier(self):
        return int(self.experiment.identifier)

    @property
    def steps_total(self):
        """
        Return the total number of steps. Since this is only available after the prepare stage of the experiment, the
        method returns -1 if the prepare was not yet run.
        """
        if hasattr(self.experiment, "max_step_counter"):
            return self.experiment.max_step_counter + 1
        else:
            return -1



    def terminate(self):
        self.experiment.terminate()


    @event
    def emit_data(self, data):
        return data