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Measure callback timeout relative to current time #15479
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Fixes a bug where the timeout passed to `scheduleCallback` represented an absolute timestamp, instead of the amount of time until that timestamp is reached. The solution is to subtract the current time from the expiration. The bug wasn't caught by other tests because we use virtual times that default to 0, and most tests don't advance time. I also moved the `initialTimeMs` offset to the `SchedulerWithReactIntegration` module so that we don't have to remember to subtract the offset every time. (We should consider upstreaming this to the Scheduler package.)
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Apr 23, 2019
export const shouldYield = disableYielding | ||
? () => false // Never yield when `disableYielding` is on | ||
: Scheduler_shouldYield; | ||
|
||
let immediateQueue: Array<SchedulerCallback> | null = null; | ||
let immediateQueueCallbackNode: mixed | null = null; | ||
let isFlushingImmediate: boolean = false; | ||
let initialTimeMs: number = Scheduler_now(); |
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Should this be const
?
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Fixes a bug where the timeout passed to
scheduleCallback
represented an absolute timestamp, instead of the amount of time until that timestamp is reached. The solution is to subtract the current time from the expiration.The bug wasn't caught by other tests because we use virtual times that default to 0, and most tests don't advance time.
I also moved the
initialTimeMs
offset to theSchedulerWithReactIntegration
module so that we don't have to remember to subtract the offset every time. (We should consider upstreaming this to the Scheduler package.)