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sync: say that Cond.Wait can not return spuriously

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R=golang-dev, r, rsc, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/5674086
This commit is contained in:
Dmitriy Vyukov 2012-02-17 13:20:11 +04:00
parent 649f771b7b
commit 76eb911a3c
1 changed files with 3 additions and 2 deletions
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5
src/pkg/sync/cond.go
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@ -43,9 +43,10 @@ func NewCond(l Locker) *Cond {
// Wait atomically unlocks c.L and suspends execution // Wait atomically unlocks c.L and suspends execution
// of the calling goroutine. After later resuming execution, // of the calling goroutine. After later resuming execution,
// Wait locks c.L before returning. // Wait locks c.L before returning. Unlike in other systems,
// Wait cannot return unless awoken by Broadcast or Signal.
// //
// Because L is not locked when Wait first resumes, the caller // Because c.L is not locked when Wait first resumes, the caller
// typically cannot assume that the condition is true when // typically cannot assume that the condition is true when
// Wait returns. Instead, the caller should Wait in a loop: // Wait returns. Instead, the caller should Wait in a loop:
// //