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35 lines
630 B
Go
35 lines
630 B
Go
// Copyright © 2018 ChaiShushan <chaishushan{AT}gmail.com>.
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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package main
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import (
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"unsafe"
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)
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type FunTwiceClosure struct {
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F uintptr
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X int
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}
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func NewTwiceFunClosure(x int) func() int {
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var p = &FunTwiceClosure{
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F: asmFunTwiceClosureAddr(),
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X: x,
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}
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return ptrToFunc(unsafe.Pointer(p))
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}
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func ptrToFunc(p unsafe.Pointer) func() int
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func asmFunTwiceClosureAddr() uintptr
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func asmFunTwiceClosureBody() int
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func main() {
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fnTwice := NewTwiceFunClosure(1)
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println(fnTwice()) // 1*2 => 2
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println(fnTwice()) // 2*2 => 4
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println(fnTwice()) // 4*2 => 8
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}
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