runtime: fix use of xadd64

aclements · aclements · commit 7d1d64295694 · 2015-11-11T15:26:24.000Z
Commit 7407d8e was rebased over the switch to runtime/internal/atomic and introduced a call to xadd64, which no longer exists. Fix that call. Change-Id: I99c93469794c16504ae4a8ffe3066ac382c66a3a Reviewed-on: https://go-review.googlesource.com/16816 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
diff --git a/src/runtime/mgcsweep.go b/src/runtime/mgcsweep.go
@@ -392,7 +392,7 @@ func reimburseSweepCredit(unusableBytes uintptr) {
 		// Nobody cares about the credit. Avoid the atomic.
 		return
 	}
-	xadd64(&mheap_.spanBytesAlloc, -int64(unusableBytes))
+	atomic.Xadd64(&mheap_.spanBytesAlloc, -int64(unusableBytes))
 }
 
 func dumpFreeList(s *mspan) {

Original file line number	Diff line number	Diff line change
`@@ -392,7 +392,7 @@ func reimburseSweepCredit(unusableBytes uintptr) {`
`392`	`392`	`// Nobody cares about the credit. Avoid the atomic.`
`393`	`393`	`return`
`394`	`394`	`}`
`395`		`- xadd64(&mheap_.spanBytesAlloc, -int64(unusableBytes))`
	`395`	`+ atomic.Xadd64(&mheap_.spanBytesAlloc, -int64(unusableBytes))`
`396`	`396`	`}`
`397`	`397`
`398`	`398`	`func dumpFreeList(s *mspan) {`