gtsocial-umbx

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compiler_race.go (998B)

      1 //go:build race
      2 // +build race
      3 
      4 package encoder
      5 
      6 import (
      7 	"sync"
      8 )
      9 
     10 var setsMu sync.RWMutex
     11 
     12 func CompileToGetCodeSet(ctx *RuntimeContext, typeptr uintptr) (*OpcodeSet, error) {
     13 	if typeptr > typeAddr.MaxTypeAddr || typeptr < typeAddr.BaseTypeAddr {
     14 		codeSet, err := compileToGetCodeSetSlowPath(typeptr)
     15 		if err != nil {
     16 			return nil, err
     17 		}
     18 		return getFilteredCodeSetIfNeeded(ctx, codeSet)
     19 	}
     20 	index := (typeptr - typeAddr.BaseTypeAddr) >> typeAddr.AddrShift
     21 	setsMu.RLock()
     22 	if codeSet := cachedOpcodeSets[index]; codeSet != nil {
     23 		filtered, err := getFilteredCodeSetIfNeeded(ctx, codeSet)
     24 		if err != nil {
     25 			setsMu.RUnlock()
     26 			return nil, err
     27 		}
     28 		setsMu.RUnlock()
     29 		return filtered, nil
     30 	}
     31 	setsMu.RUnlock()
     32 
     33 	codeSet, err := newCompiler().compile(typeptr)
     34 	if err != nil {
     35 		return nil, err
     36 	}
     37 	filtered, err := getFilteredCodeSetIfNeeded(ctx, codeSet)
     38 	if err != nil {
     39 		return nil, err
     40 	}
     41 	setsMu.Lock()
     42 	cachedOpcodeSets[index] = codeSet
     43 	setsMu.Unlock()
     44 	return filtered, nil
     45 }