31 lines
725 B
Go
31 lines
725 B
Go
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package main
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import "unsafe"
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// slice is the runtime representation of a slice.
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// It cannot be used safely or portably and its representation may
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// change in a later release.
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//
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// Unlike reflect.SliceHeader, its Data field is sufficient to guarantee the
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// data it references will not be garbage collected.
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type slice struct {
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data unsafe.Pointer
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len int
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cap int
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}
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// bytesToString 没有内存开销的转换
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func bytesToString(b []byte) string {
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return *(*string)(unsafe.Pointer(&b))
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}
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// stringToBytes 没有内存开销的转换
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func stringToBytes(s string) (b []byte) {
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bh := (*slice)(unsafe.Pointer(&b))
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sh := (*slice)(unsafe.Pointer(&s))
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bh.data = sh.data
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bh.len = sh.len
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bh.cap = sh.len
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return b
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}
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