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comparison src/share/vm/oops/instanceKlass.cpp @ 6152:958bb4b7be49

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Merge
author asaha
date Tue, 10 Apr 2012 10:42:34 -0700
parents 6522ad563f99
children 49036505ab5f
comparison
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6151:e778c29768e6 6152:958bb4b7be49
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
667 667
668 objArrayOop instanceKlass::allocate_objArray(int n, int length, TRAPS) { 668 objArrayOop instanceKlass::allocate_objArray(int n, int length, TRAPS) {
669 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); 669 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
670 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { 670 if (length > arrayOopDesc::max_array_length(T_OBJECT)) {
671 report_java_out_of_memory("Requested array size exceeds VM limit"); 671 report_java_out_of_memory("Requested array size exceeds VM limit");
672 JvmtiExport::post_array_size_exhausted();
672 THROW_OOP_0(Universe::out_of_memory_error_array_size()); 673 THROW_OOP_0(Universe::out_of_memory_error_array_size());
673 } 674 }
674 int size = objArrayOopDesc::object_size(length); 675 int size = objArrayOopDesc::object_size(length);
675 klassOop ak = array_klass(n, CHECK_NULL); 676 klassOop ak = array_klass(n, CHECK_NULL);
676 KlassHandle h_ak (THREAD, ak); 677 KlassHandle h_ak (THREAD, ak);
1130 probe = jni_id_for_impl(this->as_klassOop(), offset); 1131 probe = jni_id_for_impl(this->as_klassOop(), offset);
1131 } 1132 }
1132 return probe; 1133 return probe;
1133 } 1134 }
1134 1135
1136 u2 instanceKlass::enclosing_method_data(int offset) {
1137 typeArrayOop inner_class_list = inner_classes();
1138 if (inner_class_list == NULL) {
1139 return 0;
1140 }
1141 int length = inner_class_list->length();
1142 if (length % inner_class_next_offset == 0) {
1143 return 0;
1144 } else {
1145 int index = length - enclosing_method_attribute_size;
1146 typeArrayHandle inner_class_list_h(inner_class_list);
1147 assert(offset < enclosing_method_attribute_size, "invalid offset");
1148 return inner_class_list_h->ushort_at(index + offset);
1149 }
1150 }
1151
1152 void instanceKlass::set_enclosing_method_indices(u2 class_index,
1153 u2 method_index) {
1154 typeArrayOop inner_class_list = inner_classes();
1155 assert (inner_class_list != NULL, "_inner_classes list is not set up");
1156 int length = inner_class_list->length();
1157 if (length % inner_class_next_offset == enclosing_method_attribute_size) {
1158 int index = length - enclosing_method_attribute_size;
1159 typeArrayHandle inner_class_list_h(inner_class_list);
1160 inner_class_list_h->ushort_at_put(
1161 index + enclosing_method_class_index_offset, class_index);
1162 inner_class_list_h->ushort_at_put(
1163 index + enclosing_method_method_index_offset, method_index);
1164 }
1165 }
1135 1166
1136 // Lookup or create a jmethodID. 1167 // Lookup or create a jmethodID.
1137 // This code is called by the VMThread and JavaThreads so the 1168 // This code is called by the VMThread and JavaThreads so the
1138 // locking has to be done very carefully to avoid deadlocks 1169 // locking has to be done very carefully to avoid deadlocks
1139 // and/or other cache consistency problems. 1170 // and/or other cache consistency problems.
2104 jint instanceKlass::compute_modifier_flags(TRAPS) const { 2135 jint instanceKlass::compute_modifier_flags(TRAPS) const {
2105 klassOop k = as_klassOop(); 2136 klassOop k = as_klassOop();
2106 jint access = access_flags().as_int(); 2137 jint access = access_flags().as_int();
2107 2138
2108 // But check if it happens to be member class. 2139 // But check if it happens to be member class.
2109 typeArrayOop inner_class_list = inner_classes(); 2140 instanceKlassHandle ik(THREAD, k);
2110 int length = (inner_class_list == NULL) ? 0 : inner_class_list->length(); 2141 InnerClassesIterator iter(ik);
2111 assert (length % instanceKlass::inner_class_next_offset == 0, "just checking"); 2142 for (; !iter.done(); iter.next()) {
2112 if (length > 0) { 2143 int ioff = iter.inner_class_info_index();
2113 typeArrayHandle inner_class_list_h(THREAD, inner_class_list); 2144 // Inner class attribute can be zero, skip it.
2114 instanceKlassHandle ik(THREAD, k); 2145 // Strange but true: JVM spec. allows null inner class refs.
2115 for (int i = 0; i < length; i += instanceKlass::inner_class_next_offset) { 2146 if (ioff == 0) continue;
2116 int ioff = inner_class_list_h->ushort_at( 2147
2117 i + instanceKlass::inner_class_inner_class_info_offset); 2148 // only look at classes that are already loaded
2118 2149 // since we are looking for the flags for our self.
2119 // Inner class attribute can be zero, skip it. 2150 Symbol* inner_name = ik->constants()->klass_name_at(ioff);
2120 // Strange but true: JVM spec. allows null inner class refs. 2151 if ((ik->name() == inner_name)) {
2121 if (ioff == 0) continue; 2152 // This is really a member class.
2122 2153 access = iter.inner_access_flags();
2123 // only look at classes that are already loaded 2154 break;
2124 // since we are looking for the flags for our self.
2125 Symbol* inner_name = ik->constants()->klass_name_at(ioff);
2126 if ((ik->name() == inner_name)) {
2127 // This is really a member class.
2128 access = inner_class_list_h->ushort_at(i + instanceKlass::inner_class_access_flags_offset);
2129 break;
2130 }
2131 } 2155 }
2132 } 2156 }
2133 // Remember to strip ACC_SUPER bit 2157 // Remember to strip ACC_SUPER bit
2134 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; 2158 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS;
2135 } 2159 }