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comparison src/share/vm/c1/c1_Runtime1.cpp @ 1247:230fac611b50

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Merge
author johnc
date Mon, 08 Feb 2010 09:58:32 -0800
parents 6deeaebad47a 6484c4ee11cb
children abc670a709dc c18cbe5936b8
comparison
equal deleted inserted replaced
1218:ff3232b68fbb 1247:230fac611b50
1073 ac_failed = -1, // arraycopy failed 1073 ac_failed = -1, // arraycopy failed
1074 ac_ok = 0 // arraycopy succeeded 1074 ac_ok = 0 // arraycopy succeeded
1075 }; 1075 };
1076 1076
1077 1077
1078 // Below length is the # elements copied.
1078 template <class T> int obj_arraycopy_work(oopDesc* src, T* src_addr, 1079 template <class T> int obj_arraycopy_work(oopDesc* src, T* src_addr,
1079 oopDesc* dst, T* dst_addr, 1080 oopDesc* dst, T* dst_addr,
1080 int length) { 1081 int length) {
1081 1082
1082 // For performance reasons, we assume we are using a card marking write 1083 // For performance reasons, we assume we are using a card marking write
1083 // barrier. The assert will fail if this is not the case. 1084 // barrier. The assert will fail if this is not the case.
1084 // Note that we use the non-virtual inlineable variant of write_ref_array. 1085 // Note that we use the non-virtual inlineable variant of write_ref_array.
1085 BarrierSet* bs = Universe::heap()->barrier_set(); 1086 BarrierSet* bs = Universe::heap()->barrier_set();
1086 assert(bs->has_write_ref_array_opt(), 1087 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
1087 "Barrier set must have ref array opt"); 1088 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well.");
1088 if (src == dst) { 1089 if (src == dst) {
1089 // same object, no check 1090 // same object, no check
1091 bs->write_ref_array_pre(dst_addr, length);
1090 Copy::conjoint_oops_atomic(src_addr, dst_addr, length); 1092 Copy::conjoint_oops_atomic(src_addr, dst_addr, length);
1091 bs->write_ref_array(MemRegion((HeapWord*)dst_addr, 1093 bs->write_ref_array((HeapWord*)dst_addr, length);
1092 (HeapWord*)(dst_addr + length)));
1093 return ac_ok; 1094 return ac_ok;
1094 } else { 1095 } else {
1095 klassOop bound = objArrayKlass::cast(dst->klass())->element_klass(); 1096 klassOop bound = objArrayKlass::cast(dst->klass())->element_klass();
1096 klassOop stype = objArrayKlass::cast(src->klass())->element_klass(); 1097 klassOop stype = objArrayKlass::cast(src->klass())->element_klass();
1097 if (stype == bound || Klass::cast(stype)->is_subtype_of(bound)) { 1098 if (stype == bound || Klass::cast(stype)->is_subtype_of(bound)) {
1098 // Elements are guaranteed to be subtypes, so no check necessary 1099 // Elements are guaranteed to be subtypes, so no check necessary
1100 bs->write_ref_array_pre(dst_addr, length);
1099 Copy::conjoint_oops_atomic(src_addr, dst_addr, length); 1101 Copy::conjoint_oops_atomic(src_addr, dst_addr, length);
1100 bs->write_ref_array(MemRegion((HeapWord*)dst_addr, 1102 bs->write_ref_array((HeapWord*)dst_addr, length);
1101 (HeapWord*)(dst_addr + length)));
1102 return ac_ok; 1103 return ac_ok;
1103 } 1104 }
1104 } 1105 }
1105 return ac_failed; 1106 return ac_failed;
1106 } 1107 }
1160 #ifndef PRODUCT 1161 #ifndef PRODUCT
1161 _oop_arraycopy_cnt++; 1162 _oop_arraycopy_cnt++;
1162 #endif 1163 #endif
1163 1164
1164 if (num == 0) return; 1165 if (num == 0) return;
1166 BarrierSet* bs = Universe::heap()->barrier_set();
1167 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
1168 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well.");
1169 if (UseCompressedOops) {
1170 bs->write_ref_array_pre((narrowOop*)dst, num);
1171 } else {
1172 bs->write_ref_array_pre((oop*)dst, num);
1173 }
1165 Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num); 1174 Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num);
1166 BarrierSet* bs = Universe::heap()->barrier_set(); 1175 bs->write_ref_array(dst, num);
1167 bs->write_ref_array(MemRegion(dst, dst + num));
1168 JRT_END 1176 JRT_END
1169 1177
1170 1178
1171 #ifndef PRODUCT 1179 #ifndef PRODUCT
1172 void Runtime1::print_statistics() { 1180 void Runtime1::print_statistics() {