1.1 --- a/src/share/vm/memory/cardTableModRefBS.hpp Thu Dec 05 15:13:12 2013 -0800
1.2 +++ b/src/share/vm/memory/cardTableModRefBS.hpp Mon Dec 02 10:26:14 2013 +0100
1.3 @@ -292,7 +292,7 @@
1.4 // these functions here for performance.
1.5 protected:
1.6 void write_ref_field_work(oop obj, size_t offset, oop newVal);
1.7 - virtual void write_ref_field_work(void* field, oop newVal);
1.8 + virtual void write_ref_field_work(void* field, oop newVal, bool release = false);
1.9 public:
1.10
1.11 bool has_write_ref_array_opt() { return true; }
1.12 @@ -324,9 +324,14 @@
1.13
1.14 template <class T> inline void inline_write_ref_field_pre(T* field, oop newVal) {}
1.15
1.16 - template <class T> inline void inline_write_ref_field(T* field, oop newVal) {
1.17 + template <class T> inline void inline_write_ref_field(T* field, oop newVal, bool release) {
1.18 jbyte* byte = byte_for((void*)field);
1.19 - *byte = dirty_card;
1.20 + if (release) {
1.21 + // Perform a releasing store if requested.
1.22 + OrderAccess::release_store((volatile jbyte*) byte, dirty_card);
1.23 + } else {
1.24 + *byte = dirty_card;
1.25 + }
1.26 }
1.27
1.28 // These are used by G1, when it uses the card table as a temporary data
