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comparison src/share/vm/oops/oop.pcgc.inline.hpp @ 113:ba764ed4b6f2

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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author coleenp
date Sun, 13 Apr 2008 17:43:42 -0400
parents a61af66fc99e
children d1605aabd0a1
comparison
equal deleted inserted replaced
110:a49a647afe9a 113:ba764ed4b6f2
65 65
66 // Needs to be boundary aware for the 64 bit case 66 // Needs to be boundary aware for the 64 bit case
67 // update_header(); 67 // update_header();
68 // The klass has moved. Is the location of the klass 68 // The klass has moved. Is the location of the klass
69 // within the limits? 69 // within the limits?
70 if ((((HeapWord*)&_klass) >= begin_limit) && 70 if ((((HeapWord*)&_metadata._klass) >= begin_limit) &&
71 (((HeapWord*)&_klass) < end_limit)) { 71 (((HeapWord*)&_metadata._klass) < end_limit)) {
72 set_klass(updated_klass); 72 set_klass(updated_klass);
73 } 73 }
74 74
75 Klass* klass = updated_klass->klass_part(); 75 Klass* klass = updated_klass->klass_part();
76 if (!klass->oop_is_typeArray()) { 76 if (!klass->oop_is_typeArray()) {
87 } 87 }
88 88
89 // Used by parallel old GC. 89 // Used by parallel old GC.
90 90
91 inline void oopDesc::follow_header(ParCompactionManager* cm) { 91 inline void oopDesc::follow_header(ParCompactionManager* cm) {
92 PSParallelCompact::mark_and_push(cm, (oop*)&_klass); 92 if (UseCompressedOops) {
93 PSParallelCompact::mark_and_push(cm, compressed_klass_addr());
94 } else {
95 PSParallelCompact::mark_and_push(cm, klass_addr());
96 }
93 } 97 }
94 98
95 inline oop oopDesc::forward_to_atomic(oop p) { 99 inline oop oopDesc::forward_to_atomic(oop p) {
96 assert(ParNewGeneration::is_legal_forward_ptr(p), 100 assert(ParNewGeneration::is_legal_forward_ptr(p),
97 "illegal forwarding pointer value."); 101 "illegal forwarding pointer value.");
112 } 116 }
113 return forwardee(); 117 return forwardee();
114 } 118 }
115 119
116 inline void oopDesc::update_header() { 120 inline void oopDesc::update_header() {
117 PSParallelCompact::adjust_pointer((oop*)&_klass); 121 if (UseCompressedOops) {
122 PSParallelCompact::adjust_pointer(compressed_klass_addr());
123 } else {
124 PSParallelCompact::adjust_pointer(klass_addr());
125 }
118 } 126 }
119 127
120 inline void oopDesc::update_header(HeapWord* beg_addr, HeapWord* end_addr) { 128 inline void oopDesc::update_header(HeapWord* beg_addr, HeapWord* end_addr) {
121 PSParallelCompact::adjust_pointer((oop*)&_klass, beg_addr, end_addr); 129 if (UseCompressedOops) {
130 PSParallelCompact::adjust_pointer(compressed_klass_addr(),
131 beg_addr, end_addr);
132 } else {
133 PSParallelCompact::adjust_pointer(klass_addr(), beg_addr, end_addr);
134 }
122 } 135 }