I just want to look what variable datastructure is passed to the closure
func but I am confused with the assemble code
// example.go
package main
import "time"
func main() {
s := []int{100, 200}
func() {
s[0] = 300
s = []int{300, 400}
}()
time.Sleep(1 * time.Second)
}
And I am confused with the assemble code
"".main t=1 size=113 args=0x0 locals=0x38
0x0000 00000 (main.go:5) TEXT "".main(SB), $56-0
0x0000 00000 (main.go:5) MOVQ (TLS), CX
0x0009 00009 (main.go:5) CMPQ SP, 16(CX)
0x000d 00013 (main.go:5) JLS 106
0x000f 00015 (main.go:5) SUBQ $56, SP
0x0013 00019 (main.go:5) MOVQ BP, 48(SP)
0x0018 00024 (main.go:5) LEAQ 48(SP), BP
0x001d 00029 (main.go:5) FUNCDATA $0,
gclocals·69c1753bd5f81501d95132d08af04464(SB)
0x001d 00029 (main.go:5) FUNCDATA $1,
gclocals·2c033e7f4f4a74cc7e9f368d1fec9f60(SB)
0x001d 00029 (main.go:6) MOVUPS "".statictmp_0(SB), X0
0x0024 00036 (main.go:6) MOVUPS X0, "".autotmp_2+8(SP)
0x0029 00041 (main.go:6) LEAQ "".autotmp_2+8(SP), AX
0x002e 00046 (main.go:6) MOVQ AX, "".s+24(SP)
0x0033 00051 (main.go:6) MOVQ $2, "".s+32(SP)
0x003c 00060 (main.go:6) MOVQ $2, "".s+40(SP)
0x0045 00069 (main.go:6) LEAQ "".s+24(SP), AX
0x004a 00074 (main.go:10) MOVQ AX, (SP)
0x004e 00078 (main.go:10) PCDATA $0, $1
0x004e 00078 (main.go:10) CALL "".main.func1(SB)
0x0053 00083 (main.go:11) MOVQ $1000000000, (SP)
0x005b 00091 (main.go:11) PCDATA $0, $1
0x005b 00091 (main.go:11) CALL time.Sleep(SB)
0x0060 00096 (main.go:12) MOVQ 48(SP), BP
0x0065 00101 (main.go:12) ADDQ $56, SP
0x0069 00105 (main.go:12) RET
0x006a 00106 (main.go:12) NOP
0x006a 00106 (main.go:5) CALL runtime.morestack_noctxt(SB)
0x006f 00111 (main.go:5) JMP 0
在 2016年11月3日星期四 UTC+8下午2:43:40，Ian Lance Taylor写道：
>
> On Wed, Nov 2, 2016 at 8:03 PM, 刘桂祥 <liuguix...@gmail.com <javascript:>>
> wrote:
> >
> > In golang closure func ,the needed outer variable is passed by reference
> >
> > but when the variable self is a reference in example.go , the closure
> func
> > paras is *[&map[int]int,...] is so ?
>
> I'm not completely sure what you are asking, but I think the answer is
> yes.
>
> > and I doubt what kind of datatype the paras in closure func?
>
> Each function that has a closure has a custom type for the closure
> variable. It's essentially a struct each of whose fields is a pointer
> to the type of the variable being closed over.
>
> Ian
>
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