perf: Interrupt controllers when canceling them.#19233
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gianm wants to merge 6 commits intoapache:masterfrom
Open
perf: Interrupt controllers when canceling them.#19233gianm wants to merge 6 commits intoapache:masterfrom
gianm wants to merge 6 commits intoapache:masterfrom
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In PRs apache#18095 and apache#18931, worker cancellation was switched to use interrupts with a lightweight non-interrupt-based failsafe. This patch implements a similar idea for controllers, to aid in more prompt cancellation in cases where the controller is blocking on something. The main change is to track the controller thread in ControllerHolder and interrupt it on cancel(), in addition to calling controller.stop(). ControllerHolder is also moved from dart.controller to msq.exec, since it is now a shared class, no longer Dart-specific. In addition, the "workerOffline" logic is moved to Dart's ControllerMessageListener, since that really is Dart-specific.
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In PRs #18095 and #18931, worker cancellation was switched to use interrupts with a lightweight non-interrupt-based failsafe. This patch implements a similar idea for controllers, to aid in more prompt cancellation in cases where the controller is blocking on something.
The main change is to track the controller thread in
ControllerHolderand interrupt it oncancel(), in addition to callingcontroller.stop(). ControllerHolder is also moved fromdart.controllertomsq.exec, since it is now a shared class, no longer Dart-specific. In addition, theworkerOfflinelogic is moved to Dart'sControllerMessageListener, since that really is Dart-specific.