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18 lines
533 B
Go
18 lines
533 B
Go
package buffer
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// RecycleSlice zeroes byte slice, making it fresh for another use.
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// Zeroing the buffer using a logarithmic number of calls to the optimized copy
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// method. Benchmarking shows this to be ~30 times faster than a for loop that
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// sets each index to 0 for ~65KB buffers use for wire messages. Inspired by:
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// https://stackoverflow.com/questions/30614165/is-there-analog-of-memset-in-go
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func RecycleSlice(b []byte) {
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if len(b) == 0 {
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return
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}
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b[0] = 0
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for i := 1; i < len(b); i *= 2 {
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copy(b[i:], b[:i])
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}
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}
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