time: update current time comment

In the time package, the ticker and timer both send
current time to channel C, so this PR update the comment
to understand them better.

Change-Id: I99846a40bf8ef780bf0062dd84cf721b3b892a1b
GitHub-Last-Rev: 535da54b8e
GitHub-Pull-Request: golang/go#47597
Reviewed-on: https://go-review.googlesource.com/c/go/+/340649
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
This commit is contained in:
astraw99 2021-08-16 09:54:40 +00:00 committed by Ian Lance Taylor
parent a0adf91d85
commit 850768bbc9
2 changed files with 4 additions and 8 deletions

View file

@ -139,12 +139,8 @@ func (t *Timer) Reset(d Duration) bool {
return resetTimer(&t.r, w)
}
// sendTime does a non-blocking send of the current time on c.
func sendTime(c interface{}, seq uintptr) {
// Non-blocking send of time on c.
// Used in NewTimer, it cannot block anyway (buffer).
// Used in NewTicker, dropping sends on the floor is
// the desired behavior when the reader gets behind,
// because the sends are periodic.
select {
case c.(chan Time) <- Now():
default:

View file

@ -14,9 +14,9 @@ type Ticker struct {
}
// NewTicker returns a new Ticker containing a channel that will send
// the time on the channel after each tick. The period of the ticks is
// specified by the duration argument. The ticker will adjust the time
// interval or drop ticks to make up for slow receivers.
// the current time on the channel after each tick. The period of the
// ticks is specified by the duration argument. The ticker will adjust
// the time interval or drop ticks to make up for slow receivers.
// The duration d must be greater than zero; if not, NewTicker will
// panic. Stop the ticker to release associated resources.
func NewTicker(d Duration) *Ticker {