perf: Memory alignment to improve operatorCache memory efficiency (#366)

dxasu · web-flow · commit b3ca76eac1a8 · 2024-11-07T13:58:06.000+08:00
diff --git a/fd_operator_cache.go b/fd_operator_cache.go
@@ -28,13 +28,13 @@ func newOperatorCache() *operatorCache {
 }
 
 type operatorCache struct {
-	locked int32
 	first  *FDOperator
 	cache  []*FDOperator
+	locked int32
 	// freelist store the freeable operator
 	// to reduce GC pressure, we only store op index here
-	freelist   []int32
 	freelocked int32
+	freelist   []int32
 }
 
 func (c *operatorCache) alloc() *FDOperator {

Original file line number	Diff line number	Diff line change
`@@ -28,13 +28,13 @@ func newOperatorCache() *operatorCache {`
`28`	`28`	`}`
`29`	`29`
`30`	`30`	`type operatorCache struct {`
`31`		`- locked int32`
`32`	`31`	`first *FDOperator`
`33`	`32`	`cache []*FDOperator`
	`33`	`+ locked int32`
`34`	`34`	`// freelist store the freeable operator`
`35`	`35`	`// to reduce GC pressure, we only store op index here`
`36`		`- freelist []int32`
`37`	`36`	`freelocked int32`
	`37`	`+ freelist []int32`
`38`	`38`	`}`
`39`	`39`
`40`	`40`	`func (c operatorCache) alloc() FDOperator {`