txscript: Add benchmarks for IsMutlsigScript.
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2 changed files with 66 additions and 0 deletions
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@ -174,3 +174,48 @@ func BenchmarkIsPayToScriptHash(b *testing.B) {
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_ = IsPayToScriptHash(script)
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}
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}
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// BenchmarkIsMultisigScriptLarge benchmarks how long it takes IsMultisigScript
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// to analyze a very large script.
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func BenchmarkIsMultisigScriptLarge(b *testing.B) {
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script, err := genComplexScript()
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if err != nil {
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b.Fatalf("failed to create benchmark script: %v", err)
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}
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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isMultisig, err := IsMultisigScript(script)
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if err != nil {
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b.Fatalf("unexpected err: %v", err)
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}
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if isMultisig {
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b.Fatalf("script should NOT be reported as mutisig script")
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}
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}
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}
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// BenchmarkIsMultisigScript benchmarks how long it takes IsMultisigScript to
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// analyze a 1-of-2 multisig public key script.
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func BenchmarkIsMultisigScript(b *testing.B) {
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multisigShortForm := "1 " +
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"DATA_33 " +
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"0x030478aaaa2be30772f1e69e581610f1840b3cf2fe7228ee0281cd599e5746f81e " +
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"DATA_33 " +
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"0x0284f4d078b236a9ff91661f8ffbe012737cd3507566f30fd97d25f2b23539f3cd " +
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"2 CHECKMULTISIG"
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pkScript := mustParseShortForm(multisigShortForm)
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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isMultisig, err := IsMultisigScript(pkScript)
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if err != nil {
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b.Fatalf("unexpected err: %v", err)
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}
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if !isMultisig {
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b.Fatalf("script should be reported as a mutisig script")
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}
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}
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}
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@ -248,6 +248,27 @@ func isMultiSig(pops []parsedOpcode) bool {
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return true
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}
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// IsMultisigScript returns whether or not the passed script is a standard
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// multisignature script.
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//
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// NOTE: This function is only valid for version 0 scripts. Since the function
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// does not accept a script version, the results are undefined for other script
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// versions.
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//
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// The error is DEPRECATED and will be removed in the major version bump.
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func IsMultisigScript(script []byte) (bool, error) {
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if len(script) == 0 || script == nil {
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return false, nil
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}
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pops, err := parseScript(script)
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if err != nil {
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return false, err
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}
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return isMultiSig(pops), nil
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}
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// isNullData returns true if the passed script is a null data transaction,
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// false otherwise.
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func isNullData(pops []parsedOpcode) bool {
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