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a little perfomance improved

This commit is contained in:
Lunny Xiao 2014-02-10 13:56:29 +08:00
parent 781062130a
commit da96e0cc86
2 changed files with 23 additions and 21 deletions
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8
engine.go
View File

@ -58,7 +58,7 @@ type Engine struct {
DataSourceName string DataSourceName string
dialect dialect dialect dialect
Tables map[reflect.Type]*Table Tables map[reflect.Type]*Table
mutex *sync.Mutex mutex *sync.RWMutex
ShowSQL bool ShowSQL bool
ShowErr bool ShowErr bool
ShowDebug bool ShowDebug bool
@ -421,12 +421,14 @@ func (engine *Engine) Having(conditions string) *Session {
} }
func (engine *Engine) autoMapType(t reflect.Type) *Table { func (engine *Engine) autoMapType(t reflect.Type) *Table {
engine.mutex.Lock() engine.mutex.RLock()
defer engine.mutex.Unlock()
table, ok := engine.Tables[t] table, ok := engine.Tables[t]
engine.mutex.RUnlock()
if !ok { if !ok {
table = engine.mapType(t) table = engine.mapType(t)
engine.mutex.Lock()
engine.Tables[t] = table engine.Tables[t] = table
engine.mutex.Unlock()
} }
return table return table
} }

2
xorm.go
View File

@ -49,7 +49,7 @@ func NewEngine(driverName string, dataSourceName string) (*Engine, error) {
} }
engine.Tables = make(map[reflect.Type]*Table) engine.Tables = make(map[reflect.Type]*Table)
engine.mutex = &sync.Mutex{} engine.mutex = &sync.RWMutex{}
engine.TagIdentifier = "xorm" engine.TagIdentifier = "xorm"
engine.Filters = append(engine.Filters, &IdFilter{}) engine.Filters = append(engine.Filters, &IdFilter{})