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comparison agent/src/share/classes/sun/jvm/hotspot/oops/Mark.java @ 188:c0ecab83e6f3

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Merge
author never
date Tue, 10 Jun 2008 09:57:24 -0700
parents 790e66e5fbac
children d1605aabd0a1
comparison
equal deleted inserted replaced
186:cf1821c649d9 188:c0ecab83e6f3
77 biasedLockPattern = db.lookupLongConstant("markOopDesc::biased_lock_pattern").longValue(); 77 biasedLockPattern = db.lookupLongConstant("markOopDesc::biased_lock_pattern").longValue();
78 noHash = db.lookupLongConstant("markOopDesc::no_hash").longValue(); 78 noHash = db.lookupLongConstant("markOopDesc::no_hash").longValue();
79 noHashInPlace = db.lookupLongConstant("markOopDesc::no_hash_in_place").longValue(); 79 noHashInPlace = db.lookupLongConstant("markOopDesc::no_hash_in_place").longValue();
80 noLockInPlace = db.lookupLongConstant("markOopDesc::no_lock_in_place").longValue(); 80 noLockInPlace = db.lookupLongConstant("markOopDesc::no_lock_in_place").longValue();
81 maxAge = db.lookupLongConstant("markOopDesc::max_age").longValue(); 81 maxAge = db.lookupLongConstant("markOopDesc::max_age").longValue();
82
83 /* Constants in markOop used by CMS. */
84 cmsShift = db.lookupLongConstant("markOopDesc::cms_shift").longValue();
85 cmsMask = db.lookupLongConstant("markOopDesc::cms_mask").longValue();
86 sizeShift = db.lookupLongConstant("markOopDesc::size_shift").longValue();
82 } 87 }
83 88
84 // Field accessors 89 // Field accessors
85 private static CIntegerField markField; 90 private static CIntegerField markField;
86 91
117 122
118 private static long noHashInPlace; 123 private static long noHashInPlace;
119 private static long noLockInPlace; 124 private static long noLockInPlace;
120 125
121 private static long maxAge; 126 private static long maxAge;
127
128 /* Constants in markOop used by CMS. */
129 private static long cmsShift;
130 private static long cmsMask;
131 private static long sizeShift;
122 132
123 public Mark(Address addr) { 133 public Mark(Address addr) {
124 super(addr); 134 super(addr);
125 } 135 }
126 136
288 // // Prepare address of oop for placement into mark 298 // // Prepare address of oop for placement into mark
289 // inline static markOop encode_pointer_as_mark(void* p) { return markOop(p)->set_marked(); } 299 // inline static markOop encode_pointer_as_mark(void* p) { return markOop(p)->set_marked(); }
290 // 300 //
291 // // Recover address of oop from encoded form used in mark 301 // // Recover address of oop from encoded form used in mark
292 // inline void* decode_pointer() { return clear_lock_bits(); } 302 // inline void* decode_pointer() { return clear_lock_bits(); }
303
304 // Copy markOop methods for CMS here.
305 public boolean isCmsFreeChunk() {
306 return isUnlocked() &&
307 (Bits.maskBitsLong(value() >> cmsShift, cmsMask) & 0x1L) == 0x1L;
308 }
309 public long getSize() { return (long)(value() >> sizeShift); }
293 } 310 }