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add comment about Signal unsoundness

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vyzo 2023-03-30 18:13:08 +03:00 committed by Maciej Witowski
parent 371028a42a
commit 3cfbe3cd3f
1 changed files with 2 additions and 0 deletions
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2
chain/vm/execution.go
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@ -125,6 +125,8 @@ func (e *executionEnv) putToken(token *executionToken) {
e.available++
e.reserved += token.reserved
// Note: Signal is unsound, because a priority token could wake up a non-priority
// goroutnie and lead to deadlock. So Broadcast it must be.
e.cond.Broadcast()
metricsDown(metrics.VMExecutionRunning, token.lane)