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Fix PublishSubject non-deterministic behavior on concurrent modification #288

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  • changed to take snapshot of observers.values() before iterating in onNext/onError/onCompleted so that nested subscriptions that add to observers can't change the values() iteration
  • single-threaded nested subscriptions are now deterministic
  • multi-threaded subscriptions will no longer be allowed to race to get into an interating onNext/onError/onCompleted loop, they will always wait until the next
  • also improved terminal state behavior when subscribing to a PublishSubject that has already received onError/onCompleted

#282

- changed to take snapshot of observers.values() before iterating in onNext/onError/onCompleted so that nested subscriptions that add to observers can't change the values() iteration
- single-threaded nested subscriptions are now deterministic
- multi-threaded subscriptions will no longer be allowed to race to get into an interating onNext/onError/onCompleted loop, they will always wait until the next
- also improved terminal state behavior when subscribing to a PublishSubject that has already received onError/onCompleted

ReactiveX#282
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RxJava-pull-requests #159 SUCCESS
This pull request looks good

- remove the race condition that existed between a subscription coming in while onError/onCompleted was being called
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RxJava-pull-requests #161 FAILURE
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benjchristensen added a commit that referenced this pull request Jun 5, 2013
Fix PublishSubject non-deterministic behavior on concurrent modification
@benjchristensen benjchristensen merged commit 870d0b7 into ReactiveX:master Jun 5, 2013
rickbw pushed a commit to rickbw/RxJava that referenced this pull request Jan 9, 2014
…hSubject

Fix PublishSubject non-deterministic behavior on concurrent modification
jihoonson pushed a commit to jihoonson/RxJava that referenced this pull request Mar 6, 2020
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2 participants