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comparison agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java @ 7587:4a916f2ce331

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8003985: Support @Contended Annotation - JEP 142 Summary: HotSpot changes to support @Contended annotation. Reviewed-by: coleenp, kvn, jrose Contributed-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>
author jwilhelm
date Mon, 14 Jan 2013 15:17:47 +0100
parents bd7a7ce2e264
children e94ed1591b42
comparison
equal deleted inserted replaced
7586:90a92d5bca17 7587:4a916f2ce331
50 private static int SIGNATURE_INDEX_OFFSET; 50 private static int SIGNATURE_INDEX_OFFSET;
51 private static int INITVAL_INDEX_OFFSET; 51 private static int INITVAL_INDEX_OFFSET;
52 private static int LOW_OFFSET; 52 private static int LOW_OFFSET;
53 private static int HIGH_OFFSET; 53 private static int HIGH_OFFSET;
54 private static int FIELD_SLOTS; 54 private static int FIELD_SLOTS;
55 private static short FIELDINFO_TAG_SIZE;
56 private static short FIELDINFO_TAG_OFFSET;
55 57
56 // ClassState constants 58 // ClassState constants
57 private static int CLASS_STATE_ALLOCATED; 59 private static int CLASS_STATE_ALLOCATED;
58 private static int CLASS_STATE_LOADED; 60 private static int CLASS_STATE_LOADED;
59 private static int CLASS_STATE_LINKED; 61 private static int CLASS_STATE_LINKED;
94 // read field offset constants 96 // read field offset constants
95 ACCESS_FLAGS_OFFSET = db.lookupIntConstant("FieldInfo::access_flags_offset").intValue(); 97 ACCESS_FLAGS_OFFSET = db.lookupIntConstant("FieldInfo::access_flags_offset").intValue();
96 NAME_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::name_index_offset").intValue(); 98 NAME_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::name_index_offset").intValue();
97 SIGNATURE_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::signature_index_offset").intValue(); 99 SIGNATURE_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::signature_index_offset").intValue();
98 INITVAL_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::initval_index_offset").intValue(); 100 INITVAL_INDEX_OFFSET = db.lookupIntConstant("FieldInfo::initval_index_offset").intValue();
99 LOW_OFFSET = db.lookupIntConstant("FieldInfo::low_offset").intValue(); 101 LOW_OFFSET = db.lookupIntConstant("FieldInfo::low_packed_offset").intValue();
100 HIGH_OFFSET = db.lookupIntConstant("FieldInfo::high_offset").intValue(); 102 HIGH_OFFSET = db.lookupIntConstant("FieldInfo::high_packed_offset").intValue();
101 FIELD_SLOTS = db.lookupIntConstant("FieldInfo::field_slots").intValue(); 103 FIELD_SLOTS = db.lookupIntConstant("FieldInfo::field_slots").intValue();
104 FIELDINFO_TAG_SIZE = db.lookupIntConstant("FIELDINFO_TAG_SIZE").shortValue();
105 FIELDINFO_TAG_OFFSET = db.lookupIntConstant("FIELDINFO_TAG_OFFSET").shortValue();
106
102 // read ClassState constants 107 // read ClassState constants
103 CLASS_STATE_ALLOCATED = db.lookupIntConstant("InstanceKlass::allocated").intValue(); 108 CLASS_STATE_ALLOCATED = db.lookupIntConstant("InstanceKlass::allocated").intValue();
104 CLASS_STATE_LOADED = db.lookupIntConstant("InstanceKlass::loaded").intValue(); 109 CLASS_STATE_LOADED = db.lookupIntConstant("InstanceKlass::loaded").intValue();
105 CLASS_STATE_LINKED = db.lookupIntConstant("InstanceKlass::linked").intValue(); 110 CLASS_STATE_LINKED = db.lookupIntConstant("InstanceKlass::linked").intValue();
106 CLASS_STATE_BEING_INITIALIZED = db.lookupIntConstant("InstanceKlass::being_initialized").intValue(); 111 CLASS_STATE_BEING_INITIALIZED = db.lookupIntConstant("InstanceKlass::being_initialized").intValue();
312 return getFields().at(index * FIELD_SLOTS + INITVAL_INDEX_OFFSET); 317 return getFields().at(index * FIELD_SLOTS + INITVAL_INDEX_OFFSET);
313 } 318 }
314 319
315 public int getFieldOffset(int index) { 320 public int getFieldOffset(int index) {
316 U2Array fields = getFields(); 321 U2Array fields = getFields();
317 return VM.getVM().buildIntFromShorts(fields.at(index * FIELD_SLOTS + LOW_OFFSET), 322 short lo = fields.at(index * FIELD_SLOTS + LOW_OFFSET);
318 fields.at(index * FIELD_SLOTS + HIGH_OFFSET)); 323 short hi = fields.at(index * FIELD_SLOTS + HIGH_OFFSET);
324 if ((lo & FIELDINFO_TAG_SIZE) == FIELDINFO_TAG_OFFSET) {
325 return VM.getVM().buildIntFromShorts(lo, hi) >> FIELDINFO_TAG_SIZE;
326 }
327 throw new RuntimeException("should not reach here");
319 } 328 }
320 329
321 // Accessors for declared fields 330 // Accessors for declared fields
322 public Klass getArrayKlasses() { return (Klass) arrayKlasses.getValue(this); } 331 public Klass getArrayKlasses() { return (Klass) arrayKlasses.getValue(this); }
323 public MethodArray getMethods() { return new MethodArray(methods.getValue(getAddress())); } 332 public MethodArray getMethods() { return new MethodArray(methods.getValue(getAddress())); }