8339579: ZGC: Race results in only one of two remembered sets being cleared

jsikstro · stefank · commit ab656c3aab81 · 2024-09-05T13:39:56.000Z
Reviewed-by: stefank, sjohanss
diff --git a/src/hotspot/share/gc/z/zRememberedSet.cpp b/src/hotspot/share/gc/z/zRememberedSet.cpp
@@ -78,8 +78,8 @@ bool ZRememberedSet::is_cleared_previous() const {
 }
 
 void ZRememberedSet::clear_all() {
-  clear_current();
-  clear_previous();
+  _bitmap[0].clear_large();
+  _bitmap[1].clear_large();
 }
 
 void ZRememberedSet::clear_current() {

Original file line number	Diff line number	Diff line change
`@@ -78,8 +78,8 @@ bool ZRememberedSet::is_cleared_previous() const {`
`78`	`78`	`}`
`79`	`79`
`80`	`80`	`void ZRememberedSet::clear_all() {`
`81`		`- clear_current();`
`82`		`- clear_previous();`
	`81`	`+ _bitmap[0].clear_large();`
	`82`	`+ _bitmap[1].clear_large();`
`83`	`83`	`}`
`84`	`84`
`85`	`85`	`void ZRememberedSet::clear_current() {`