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comparison src/share/vm/prims/jni.cpp @ 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 8d852b81e775
comparison
equal deleted inserted replaced
110:a49a647afe9a 113:ba764ed4b6f2
133 133
134 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) { 134 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
135 if (offset <= small_offset_mask) { 135 if (offset <= small_offset_mask) {
136 klassOop field_klass = k; 136 klassOop field_klass = k;
137 klassOop super_klass = Klass::cast(field_klass)->super(); 137 klassOop super_klass = Klass::cast(field_klass)->super();
138 while (instanceKlass::cast(super_klass)->contains_field_offset(offset)) { 138 // With compressed oops the most super class with nonstatic fields would
139 // be the owner of fields embedded in the header.
140 while (instanceKlass::cast(super_klass)->has_nonstatic_fields() &&
141 instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
139 field_klass = super_klass; // super contains the field also 142 field_klass = super_klass; // super contains the field also
140 super_klass = Klass::cast(field_klass)->super(); 143 super_klass = Klass::cast(field_klass)->super();
141 } 144 }
142 debug_only(No_Safepoint_Verifier nosafepoint;) 145 debug_only(No_Safepoint_Verifier nosafepoint;)
143 uintptr_t klass_hash = field_klass->identity_hash(); 146 uintptr_t klass_hash = field_klass->identity_hash();