30 lines
493 B
Go
30 lines
493 B
Go
package main
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import (
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"testing"
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"unsafe"
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)
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// go test -bench=. -benchmem performance_test.go
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type Int int
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var convertedData []int
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func BenchmarkCast(b *testing.B) {
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data := make([]Int, 1024)
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for i := 0; i < b.N; i++ {
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convertedData = make([]int, 1024)
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for idx, value := range data {
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convertedData[idx] = int(value)
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}
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}
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}
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func BenchmarkUnsafeCast(b *testing.B) {
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data := make([]Int, 1024)
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for i := 0; i < b.N; i++ {
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convertedData = *(*[]int)(unsafe.Pointer(&data))
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}
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}
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