17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/cms/cmsCardTable.hpp"
27 #include "gc/cms/cmsHeap.hpp"
28 #include "gc/shared/cardTableBarrierSet.hpp"
29 #include "gc/shared/cardTableRS.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "gc/shared/space.inline.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "memory/virtualspace.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "runtime/java.hpp"
36 #include "runtime/mutexLocker.hpp"
37 #include "runtime/orderAccess.inline.hpp"
38 #include "runtime/vmThread.hpp"
39
40 CMSCardTable::CMSCardTable(MemRegion whole_heap) :
41 CardTableRS(whole_heap, CMSPrecleaningEnabled /* scanned_concurrently */) {
42 }
43
44 // Returns the number of chunks necessary to cover "mr".
45 size_t CMSCardTable::chunks_to_cover(MemRegion mr) {
46 return (size_t)(addr_to_chunk_index(mr.last()) -
47 addr_to_chunk_index(mr.start()) + 1);
48 }
49
50 // Returns the index of the chunk in a stride which
51 // covers the given address.
52 uintptr_t CMSCardTable::addr_to_chunk_index(const void* addr) {
53 uintptr_t card = (uintptr_t) byte_for(addr);
54 return card / ParGCCardsPerStrideChunk;
55 }
56
57 void CMSCardTable::
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/cms/cmsCardTable.hpp"
27 #include "gc/cms/cmsHeap.hpp"
28 #include "gc/shared/cardTableBarrierSet.hpp"
29 #include "gc/shared/cardTableRS.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "gc/shared/space.inline.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "memory/virtualspace.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "runtime/java.hpp"
36 #include "runtime/mutexLocker.hpp"
37 #include "runtime/orderAccess.hpp"
38 #include "runtime/vmThread.hpp"
39
40 CMSCardTable::CMSCardTable(MemRegion whole_heap) :
41 CardTableRS(whole_heap, CMSPrecleaningEnabled /* scanned_concurrently */) {
42 }
43
44 // Returns the number of chunks necessary to cover "mr".
45 size_t CMSCardTable::chunks_to_cover(MemRegion mr) {
46 return (size_t)(addr_to_chunk_index(mr.last()) -
47 addr_to_chunk_index(mr.start()) + 1);
48 }
49
50 // Returns the index of the chunk in a stride which
51 // covers the given address.
52 uintptr_t CMSCardTable::addr_to_chunk_index(const void* addr) {
53 uintptr_t card = (uintptr_t) byte_for(addr);
54 return card / ParGCCardsPerStrideChunk;
55 }
56
57 void CMSCardTable::
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