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Clean up nextEffect pointer #16115

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Merged
merged 1 commit into from
Jul 18, 2019
Merged

Clean up nextEffect pointer #16115

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15 changes: 14 additions & 1 deletion packages/react-reconciler/src/ReactFiberWorkLoop.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1712,6 +1712,16 @@ function commitRootImpl(root) {
rootDoesHavePassiveEffects = false;
rootWithPendingPassiveEffects = root;
pendingPassiveEffectsExpirationTime = expirationTime;
} else {
// We are done with the effect chain at this point so let's clear the
// nextEffect pointers to assist with GC. If we have passive effects, we'll
// clear this in flushPassiveEffects.
nextEffect = firstEffect;
while (nextEffect !== null) {
const nextNextEffect = nextEffect.nextEffect;
nextEffect.nextEffect = null;
nextEffect = nextNextEffect;
}
}

// Check if there's remaining work on this root
Expand Down Expand Up @@ -1947,7 +1957,10 @@ export function flushPassiveEffects() {
captureCommitPhaseError(effect, error);
}
}
effect = effect.nextEffect;
const nextNextEffect = effect.nextEffect;
// Remove nextEffect pointer to assist GC
effect.nextEffect = null;
effect = nextNextEffect;
}

if (enableSchedulerTracing) {
Expand Down