open Udiff src/hotspot/share/memory/heapShared.hpp (original) (raw)

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@@ -109,11 +109,26 @@ #endif // INCLUDE_CDS_JAVA_HEAP

class HeapShared: AllStatic { friend class VerifySharedOopClosure; private:

• static bool _open_archive_heap_region_mapped;

• static bool _archive_heap_region_fixed;

• #if INCLUDE_CDS_JAVA_HEAP

• static bool oop_equals(oop const& p1, oop const& p2) {

• return p1 == p2;

• }

• static unsigned oop_hash(oop const& p);

• typedef ResourceHashtable<oop, oop,

•  HeapShared::oop_hash,

•  HeapShared::oop_equals,

•  15889, // prime number

•  ResourceObj::C_HEAP> ArchivedObjectCache;

• static ArchivedObjectCache* _archived_object_cache;

• // This is a list of subgraph infos built at dump time while // archiving object subgraphs. static KlassSubGraphInfo* _subgraph_info_list;

  // Contains a list of ArchivedKlassSubGraphInfoRecords that is stored

@@ -139,18 +154,10 @@ // Used by decode_from_archive static address _narrow_oop_base; static int _narrow_oop_shift; - static bool oop_equals(oop const& p1, oop const& p2) { - return primitive_equals(p1, p2); - }

• static unsigned oop_hash(oop const& p) {
• return primitive_hash
  ((address)p);
• }
• typedef ResourceHashtable<oop, bool, HeapShared::oop_hash, HeapShared::oop_equals, 15889, // prime number ResourceObj::C_HEAP> SeenObjectsTable;

@@ -182,12 +189,64 @@ static void start_recording_subgraph(InstanceKlass k, const char klass_name); static void done_recording_subgraph(InstanceKlass k, const char klass_name);

static bool has_been_seen_during_subgraph_recording(oop obj); static void set_has_been_seen_during_subgraph_recording(oop obj); +

• public:
• static void create_archived_object_cache() {
• _archived_object_cache =

•  new (ResourceObj::C_HEAP, mtClass)ArchivedObjectCache();

• }
• static void destroy_archived_object_cache() {
• delete _archived_object_cache;
• _archived_object_cache = NULL;
• }
• static ArchivedObjectCache* archived_object_cache() {
• return _archived_object_cache;
• }
• static oop find_archived_heap_object(oop obj);
• static oop archive_heap_object(oop obj, Thread* THREAD);
• static oop materialize_archived_object(narrowOop v);
• static void archive_klass_objects(Thread* THREAD);
• static void set_archive_heap_region_fixed() {
• _archive_heap_region_fixed = true;
• }
• static bool archive_heap_region_fixed() {
• return _archive_heap_region_fixed;
• }
• static void archive_java_heap_objects(GrowableArray *closed,

•                                    GrowableArray<MemRegion> *open);

• static void copy_closed_archive_heap_objects(GrowableArray * closed_archive);
• static void copy_open_archive_heap_objects(GrowableArray * open_archive);

#endif // INCLUDE_CDS_JAVA_HEAP + public:

• static bool is_heap_object_archiving_allowed() {

• CDS_JAVA_HEAP_ONLY(return (UseG1GC && UseCompressedOops && UseCompressedClassPointers);)

• NOT_CDS_JAVA_HEAP(return false;)

• }

• static void set_open_archive_heap_region_mapped() {

• CDS_JAVA_HEAP_ONLY(_open_archive_heap_region_mapped = true);

• NOT_CDS_JAVA_HEAP_RETURN;

• }

• static bool open_archive_heap_region_mapped() {

• CDS_JAVA_HEAP_ONLY(return _open_archive_heap_region_mapped);

• NOT_CDS_JAVA_HEAP_RETURN_(false);

• }

• static void fixup_mapped_heap_regions() NOT_CDS_JAVA_HEAP_RETURN;

• inline static bool is_archived_object(oop p) NOT_CDS_JAVA_HEAP_RETURN_(false);

• static void archive_java_heap_objects() NOT_CDS_JAVA_HEAP_RETURN;

• static char* read_archived_subgraph_infos(char* buffer) NOT_CDS_JAVA_HEAP_RETURN_(buffer); static void write_archived_subgraph_infos() NOT_CDS_JAVA_HEAP_RETURN; static void initialize_from_archived_subgraph(Klass* k) NOT_CDS_JAVA_HEAP_RETURN;

  // NarrowOops stored in the CDS archive may use a different encoding scheme

@@ -200,11 +259,11 @@

static void patch_archived_heap_embedded_pointers(MemRegion mem, address oopmap, size_t oopmap_in_bits) NOT_CDS_JAVA_HEAP_RETURN;

static void init_archivable_static_fields(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN;

• static void archive_static_fields(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN;

• static void archive_object_subgraphs(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN;

#if INCLUDE_CDS_JAVA_HEAP static ResourceBitMap calculate_oopmap(MemRegion region); static oop archive_reachable_objects_from(int level, KlassSubGraphInfo* subgraph_info, oop orig_obj, TRAPS); static void verify_subgraph_from(oop orig_obj) PRODUCT_RETURN;

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