libgocryptfs/internal/prefer_openssl/prefer_go1.6.go

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// +build go1.6,amd64
// go1.6+ AND amd64
package prefer_openssl
import (
"github.com/rfjakob/gocryptfs/internal/stupidgcm"
)
// PreferOpenSSL tells us if OpenSSL is faster than Go GCM on this machine.
// Go GCM is faster when the CPU has AES instructions and Go is v1.6 or higher
// on amd64.
//
// See https://github.com/rfjakob/gocryptfs/issues/23#issuecomment-218286502
// for benchmarks.
func PreferOpenSSL() bool {
if stupidgcm.BuiltWithoutOpenssl {
return false
}
return filePreferOpenSSL("/proc/cpuinfo")
}