yaole
46 lines
900 B
Go
46 lines
900 B
Go
// Package final call the finalizer befor an object destruction.
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// Clear the memeory, recode logs or something else.
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// Example:
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// Define an type
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// type Obj struct {
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// // ...
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// }
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//
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// func NewObj() *Obj {
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// a := &obj{}
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// final.SetFinalizer(a)
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// return a
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// }
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//
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// func (o *Obj) Final() {
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// // do stuffs
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// }
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package final
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import (
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"runtime"
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)
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// Finalizerable clear a object befor destruction
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type Finalizerable interface {
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Finalizer()
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}
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// SetFinalizer set obj to runtime with Finalizerable,
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// if obj implements Finalizerable interface, then call it befor obj
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// destruction, or do nothing
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func SetFinalizer(obj interface{}) {
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runtime.SetFinalizer(obj, doFinal)
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}
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// ClearFinalizer clear all finalizer on obj
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func ClearFinalizer(obj interface{}) {
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runtime.SetFinalizer(obj, nil)
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}
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func doFinal(obj interface{}) {
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if f, ok := obj.(Finalizerable); ok {
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f.Finalizer()
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}
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}
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