gtsocial-umbx

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compile_race.go (697B)

      1 //go:build race
      2 // +build race
      3 
      4 package decoder
      5 
      6 import (
      7 	"sync"
      8 	"unsafe"
      9 
     10 	"github.com/goccy/go-json/internal/runtime"
     11 )
     12 
     13 var decMu sync.RWMutex
     14 
     15 func CompileToGetDecoder(typ *runtime.Type) (Decoder, error) {
     16 	typeptr := uintptr(unsafe.Pointer(typ))
     17 	if typeptr > typeAddr.MaxTypeAddr {
     18 		return compileToGetDecoderSlowPath(typeptr, typ)
     19 	}
     20 
     21 	index := (typeptr - typeAddr.BaseTypeAddr) >> typeAddr.AddrShift
     22 	decMu.RLock()
     23 	if dec := cachedDecoder[index]; dec != nil {
     24 		decMu.RUnlock()
     25 		return dec, nil
     26 	}
     27 	decMu.RUnlock()
     28 
     29 	dec, err := compileHead(typ, map[uintptr]Decoder{})
     30 	if err != nil {
     31 		return nil, err
     32 	}
     33 	decMu.Lock()
     34 	cachedDecoder[index] = dec
     35 	decMu.Unlock()
     36 	return dec, nil
     37 }