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Unnecessary lock operation for reading from cache in extractStructCache method - fixed double checknig/reading cStruct in validateStruct method #1236

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Unnecessary lock operation for reading from cache in extractStructCache method - fixed double checknig/reading cStruct in validateStruct method #1236

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1f654bf
extractStructCache method - fixed unnecessary locking operation for r…
amirkaramiit Feb 22, 2024
e83b403
validateStruct method - fixed structChache recheck
amirkaramiit Feb 22, 2024
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6 changes: 3 additions & 3 deletions cache.go
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Expand Up @@ -100,9 +100,6 @@ type cTag struct {
}

func (v *Validate) extractStructCache(current reflect.Value, sName string) *cStruct {
v.structCache.lock.Lock()
defer v.structCache.lock.Unlock() // leave as defer! because if inner panics, it will never get unlocked otherwise!

typ := current.Type()

// could have been multiple trying to access, but once first is done this ensures struct
Expand All @@ -112,6 +109,9 @@ func (v *Validate) extractStructCache(current reflect.Value, sName string) *cStr
return cs
}

v.structCache.lock.Lock()
defer v.structCache.lock.Unlock() // leave as defer! because if inner panics, it will never get unlocked otherwise!

cs = &cStruct{name: sName, fields: make([]*cField, 0), fn: v.structLevelFuncs[typ]}

numFields := current.NumField()
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8 changes: 2 additions & 6 deletions validator.go
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Expand Up @@ -31,11 +31,7 @@ type validate struct {

// parent and current will be the same the first run of validateStruct
func (v *validate) validateStruct(ctx context.Context, parent reflect.Value, current reflect.Value, typ reflect.Type, ns []byte, structNs []byte, ct *cTag) {

cs, ok := v.v.structCache.Get(typ)
if !ok {
cs = v.v.extractStructCache(current, typ.Name())
}
cs := v.v.extractStructCache(current, typ.Name())

if len(ns) == 0 && len(cs.name) != 0 {

Expand Down Expand Up @@ -66,7 +62,7 @@ func (v *validate) validateStruct(ctx context.Context, parent reflect.Value, cur

} else {
// used with StructPartial & StructExcept
_, ok = v.includeExclude[string(append(structNs, f.name...))]
_, ok := v.includeExclude[string(append(structNs, f.name...))]

if (ok && v.hasExcludes) || (!ok && !v.hasExcludes) {
continue
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