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//go:build !go1.23
// Portions 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 runtime
// Time functions for Go 1.22 and below.
type puintptr uintptr
// Package time knows the layout of this structure.
// If this struct changes, adjust ../time/sleep.go:/runtimeTimer.
type timer struct {
// If this timer is on a heap, which P's heap it is on.
// puintptr rather than *p to match uintptr in the versions
// of this struct defined in other packages.
pp puintptr
// Timer wakes up at when, and then at when+period, ... (period > 0 only)
// each time calling f(arg, now) in the timer goroutine, so f must be
// a well-behaved function and not block.
//
// when must be positive on an active timer.
when int64
period int64
f func(any, uintptr)
arg any
seq uintptr
// What to set the when field to in timerModifiedXX status.
nextwhen int64
// The status field holds one of the values below.
status uint32
}
func (tim *timer) callCallback(delta int64) {
tim.f(tim.arg, 0)
}
// Defined in the time package, implemented here in the runtime.
//
//go:linkname startTimer time.startTimer
func startTimer(tim *timer) {
addTimer(&timerNode{
timer: tim,
callback: timerCallback,
})
scheduleLog("adding timer")
}
//go:linkname stopTimer time.stopTimer
func stopTimer(tim *timer) bool {
return removeTimer(tim)
}
//go:linkname resetTimer time.resetTimer
func resetTimer(tim *timer, when int64) bool {
tim.when = when
removed := removeTimer(tim)
startTimer(tim)
return removed
}
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