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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package time

// A Ticker holds a channel that delivers “ticks” of a clock
// at intervals.
type Ticker struct {
	C <-chan Time // The channel on which the ticks are delivered.
	r runtimeTimer
}

// NewTicker returns a new Ticker containing a channel that will send
// 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 {
	if d <= 0 {
		panic("non-positive interval for NewTicker")
	}
	// Give the channel a 1-element time buffer.
	// If the client falls behind while reading, we drop ticks
	// on the floor until the client catches up.
	c := make(chan Time, 1)
	t := &Ticker{
		C: c,
		r: runtimeTimer{
			when:   when(d),
			period: int64(d),
			f:      sendTime,
			arg:    c,
		},
	}
	startTimer(&t.r)
	return t
}

// Stop turns off a ticker. After Stop, no more ticks will be sent.
// Stop does not close the channel, to prevent a concurrent goroutine
// reading from the channel from seeing an erroneous "tick".
func (t *Ticker) Stop() {
	stopTimer(&t.r)
}

// Reset stops a ticker and resets its period to the specified duration.
// The next tick will arrive after the new period elapses. The duration d
// must be greater than zero; if not, Reset will panic.
func (t *Ticker) Reset(d Duration) {
	if d <= 0 {
		panic("non-positive interval for Ticker.Reset")
	}
	if t.r.f == nil {
		panic("time: Reset called on uninitialized Ticker")
	}
	modTimer(&t.r, when(d), int64(d), t.r.f, t.r.arg, t.r.seq)
}

// Tick is a convenience wrapper for NewTicker providing access to the ticking
// channel only. While Tick is useful for clients that have no need to shut down
// the Ticker, be aware that without a way to shut it down the underlying
// Ticker cannot be recovered by the garbage collector; it "leaks".
// Unlike NewTicker, Tick will return nil if d <= 0.
func Tick(d Duration) <-chan Time {
	if d <= 0 {
		return nil
	}
	return NewTicker(d).C
}

Batal

⬅ src 38 item

Nama	Tipe	Ukuran	Diubah	Aksi
📁testdata	dir	—	2024-02-02 18:09	📂 Buka
📁tzdata	dir	—	2024-02-02 18:09	📂 Buka
🔵embed.go	go	304 B	2024-02-02 18:09	✏️ 👁️
🔵example_test.go	go	22.4 KB	2024-02-02 18:09	✏️ 👁️
🔵export_android_test.go	go	438 B	2024-02-02 18:09	✏️ 👁️
🔵export_test.go	go	4 KB	2024-02-02 18:09	✏️ 👁️
🔵export_windows_test.go	go	514 B	2024-02-02 18:09	✏️ 👁️
🔵format.go	go	48.4 KB	2024-02-02 18:09	✏️ 👁️
🔵format_rfc3339.go	go	5.7 KB	2024-02-02 18:09	✏️ 👁️
🔵format_test.go	go	35.9 KB	2024-02-02 18:09	✏️ 👁️
🔵genzabbrs.go	go	3 KB	2024-02-02 18:09	✏️ 👁️
🔵internal_test.go	go	2.2 KB	2024-02-02 18:09	✏️ 👁️
🔵mono_test.go	go	8.3 KB	2024-02-02 18:09	✏️ 👁️
🔵sleep.go	go	5.7 KB	2024-02-02 18:09	✏️ 👁️
🔵sleep_test.go	go	18.5 KB	2024-02-02 18:09	✏️ 👁️
🔵sys_plan9.go	go	1016 B	2024-02-02 18:09	✏️ 👁️
🔵sys_unix.go	go	1.4 KB	2024-02-02 18:09	✏️ 👁️
🔵sys_windows.go	go	1.1 KB	2024-02-02 18:09	✏️ 👁️
🔵tick.go	go	2.3 KB	2024-02-02 18:09	✏️ 👁️
🔵tick_test.go	go	4 KB	2024-02-02 18:09	✏️ 👁️
🔵time.go	go	49.6 KB	2024-02-02 18:09	✏️ 👁️
🔵time_test.go	go	56 KB	2024-02-02 18:09	✏️ 👁️
🔵tzdata_test.go	go	2.5 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo.go	go	18.1 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_abbrs_windows.go	go	10.5 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_android.go	go	2.2 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_android_test.go	go	386 B	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_goroot.go	go	348 B	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_ios.go	go	1 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_js.go	go	1 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_plan9.go	go	2.7 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_read.go	go	14.3 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_test.go	go	9.9 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_unix.go	go	1.7 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_unix_test.go	go	2.3 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_wasip1.go	go	307 B	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_windows.go	go	6.6 KB	2024-02-02 18:09	✏️ 👁️
🔵zoneinfo_windows_test.go	go	1.8 KB	2024-02-02 18:09	✏️ 👁️

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