Documentation
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Overview ¶
Package runtime provides utilities for semaphores (chan struct{}), a simple Latch implementation, and metrics for reporting handled panics.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Closer ¶
func Closer(sig chan<- struct{}) func()
return a func that will close the signal chan. multiple invocations of the returned func will not generate a panic. two funcs from separate invocations of Closer() (on the same sig chan) will cause a panic if both invoked. for example:
// good
x := runtime.After(func() { ... })
f := x.Closer()
f()
f()
// bad
x := runtime.After(func() { ... })
f := x.Closer()
g := x.Closer()
f()
g() // this will panic
Types ¶
type Signal ¶
type Signal <-chan struct{}
func After ¶
func After(f func()) Signal
spawn a goroutine to execute a func, immediately returns a chan that closes upon completion of the func. returns a nil signal chan if the given func is nil.
func On ¶
func On(sig <-chan struct{}, f func()) Signal
execute a callback function after the specified signal chan closes. immediately returns a signal that indicates f's completion.
func OnOSSignal ¶
func OnOSSignal(sig <-chan os.Signal, f func(os.Signal)) Signal
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