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Add event queue and cancel functionality
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Original file line number | Diff line number | Diff line change |
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import logging | ||
from queue import SimpleQueue | ||
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from qtpy.QtCore import QObject, Signal, Slot | ||
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from ert.ensemble_evaluator import EndEvent, FullSnapshotEvent, SnapshotUpdateEvent | ||
from ert.gui.model.snapshot import SnapshotModel | ||
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logger = logging.getLogger(__name__) | ||
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class QueueEmitter(QObject): | ||
"""A worker that emits items put on a queue to qt subscribers.""" | ||
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new_event = Signal(object) | ||
done = Signal() | ||
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def __init__( | ||
self, | ||
event_queue: SimpleQueue, | ||
parent=None, | ||
): | ||
super().__init__(parent) | ||
logger.debug("init QueueEmitter") | ||
self._event_queue = event_queue | ||
self._stopped = False | ||
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@Slot() | ||
def consume_and_emit(self): | ||
logger.debug("tracking...") | ||
while True: | ||
event = self._event_queue.get() | ||
if self._stopped: | ||
logger.debug("stopped") | ||
break | ||
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# pre-rendering in this thread to avoid work in main rendering thread | ||
if isinstance(event, FullSnapshotEvent) and event.snapshot: | ||
SnapshotModel.prerender(event.snapshot) | ||
elif isinstance(event, SnapshotUpdateEvent) and event.partial_snapshot: | ||
SnapshotModel.prerender(event.partial_snapshot) | ||
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logger.debug(f"emit {event}") | ||
self.new_event.emit(event) | ||
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if isinstance(event, EndEvent): | ||
logger.debug("got end event") | ||
break | ||
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self.done.emit() | ||
logger.debug("tracking done.") | ||
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@Slot() | ||
def stop(self): | ||
logger.debug("stopping...") | ||
self._stopped = True |
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