txscript: Add benchmarks for IsMutlsigScript.

This commit is contained in:
Dave Collins 2019-03-13 01:11:15 -05:00 committed by Roy Lee
parent 69aefa65e6
commit a6244b516d
2 changed files with 66 additions and 0 deletions

View file

@ -174,3 +174,48 @@ func BenchmarkIsPayToScriptHash(b *testing.B) {
_ = IsPayToScriptHash(script)
}
}
// BenchmarkIsMultisigScriptLarge benchmarks how long it takes IsMultisigScript
// to analyze a very large script.
func BenchmarkIsMultisigScriptLarge(b *testing.B) {
script, err := genComplexScript()
if err != nil {
b.Fatalf("failed to create benchmark script: %v", err)
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
isMultisig, err := IsMultisigScript(script)
if err != nil {
b.Fatalf("unexpected err: %v", err)
}
if isMultisig {
b.Fatalf("script should NOT be reported as mutisig script")
}
}
}
// BenchmarkIsMultisigScript benchmarks how long it takes IsMultisigScript to
// analyze a 1-of-2 multisig public key script.
func BenchmarkIsMultisigScript(b *testing.B) {
multisigShortForm := "1 " +
"DATA_33 " +
"0x030478aaaa2be30772f1e69e581610f1840b3cf2fe7228ee0281cd599e5746f81e " +
"DATA_33 " +
"0x0284f4d078b236a9ff91661f8ffbe012737cd3507566f30fd97d25f2b23539f3cd " +
"2 CHECKMULTISIG"
pkScript := mustParseShortForm(multisigShortForm)
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
isMultisig, err := IsMultisigScript(pkScript)
if err != nil {
b.Fatalf("unexpected err: %v", err)
}
if !isMultisig {
b.Fatalf("script should be reported as a mutisig script")
}
}
}

View file

@ -248,6 +248,27 @@ func isMultiSig(pops []parsedOpcode) bool {
return true
}
// IsMultisigScript returns whether or not the passed script is a standard
// multisignature script.
//
// NOTE: This function is only valid for version 0 scripts. Since the function
// does not accept a script version, the results are undefined for other script
// versions.
//
// The error is DEPRECATED and will be removed in the major version bump.
func IsMultisigScript(script []byte) (bool, error) {
if len(script) == 0 || script == nil {
return false, nil
}
pops, err := parseScript(script)
if err != nil {
return false, err
}
return isMultiSig(pops), nil
}
// isNullData returns true if the passed script is a null data transaction,
// false otherwise.
func isNullData(pops []parsedOpcode) bool {