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1 /* |
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 // Interface for manipulating the basic Java classes. |
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26 // |
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27 // All dependencies on layout of actual Java classes should be kept here. |
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28 // If the layout of any of the classes above changes the offsets must be adjusted. |
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29 // |
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30 // For most classes we hardwire the offsets for performance reasons. In certain |
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31 // cases (e.g. java.security.AccessControlContext) we compute the offsets at |
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32 // startup since the layout here differs between JDK1.2 and JDK1.3. |
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33 // |
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34 // Note that fields (static and non-static) are arranged with oops before non-oops |
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35 // on a per class basis. The offsets below have to reflect this ordering. |
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36 // |
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37 // When editing the layouts please update the check_offset verification code |
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38 // correspondingly. The names in the enums must be identical to the actual field |
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39 // names in order for the verification code to work. |
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40 |
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41 |
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42 // Interface to java.lang.String objects |
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43 |
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44 class java_lang_String : AllStatic { |
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45 private: |
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46 enum { |
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47 hc_value_offset = 0, |
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48 hc_offset_offset = 1, |
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49 hc_count_offset = 2, |
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50 hc_hash_offset = 3 |
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51 }; |
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52 |
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53 static int value_offset; |
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54 static int offset_offset; |
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55 static int count_offset; |
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56 static int hash_offset; |
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57 |
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58 static Handle basic_create(int length, bool tenured, TRAPS); |
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59 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); |
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60 |
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61 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); } |
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62 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); } |
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63 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); } |
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64 |
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65 public: |
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66 // Instance creation |
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67 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); |
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68 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); |
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69 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); |
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70 static Handle create_from_str(const char* utf8_str, TRAPS); |
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71 static oop create_oop_from_str(const char* utf8_str, TRAPS); |
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72 static Handle create_from_symbol(symbolHandle symbol, TRAPS); |
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73 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
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74 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); |
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75 |
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76 static int value_offset_in_bytes() { return value_offset; } |
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77 static int count_offset_in_bytes() { return count_offset; } |
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78 static int offset_offset_in_bytes() { return offset_offset; } |
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79 static int hash_offset_in_bytes() { return hash_offset; } |
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80 |
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81 // Accessors |
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82 static typeArrayOop value(oop java_string) { |
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83 assert(is_instance(java_string), "must be java_string"); |
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84 return (typeArrayOop) java_string->obj_field(value_offset); |
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85 } |
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86 static int offset(oop java_string) { |
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87 assert(is_instance(java_string), "must be java_string"); |
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88 return java_string->int_field(offset_offset); |
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89 } |
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90 static int length(oop java_string) { |
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91 assert(is_instance(java_string), "must be java_string"); |
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92 return java_string->int_field(count_offset); |
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93 } |
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94 static int utf8_length(oop java_string); |
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95 |
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96 // String converters |
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97 static char* as_utf8_string(oop java_string); |
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98 static char* as_utf8_string(oop java_string, int start, int len); |
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99 static jchar* as_unicode_string(oop java_string, int& length); |
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100 |
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101 static bool equals(oop java_string, jchar* chars, int len); |
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102 |
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103 // Conversion between '.' and '/' formats |
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104 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } |
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105 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } |
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106 |
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107 // Conversion |
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108 static symbolHandle as_symbol(Handle java_string, TRAPS); |
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109 |
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110 // Testers |
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111 static bool is_instance(oop obj) { |
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112 return obj != NULL && obj->klass() == SystemDictionary::string_klass(); |
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113 } |
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114 |
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115 // Debugging |
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116 static void print(Handle java_string, outputStream* st); |
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117 friend class JavaClasses; |
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118 }; |
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119 |
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120 |
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121 // Interface to java.lang.Class objects |
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122 |
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123 class java_lang_Class : AllStatic { |
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124 friend class VMStructs; |
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125 private: |
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126 // The fake offsets are added by the class loader when java.lang.Class is loaded |
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127 |
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128 enum { |
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129 hc_klass_offset = 0, |
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130 hc_array_klass_offset = 1, |
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131 hc_resolved_constructor_offset = 2, |
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132 hc_number_of_fake_oop_fields = 3 |
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133 }; |
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134 |
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135 static int klass_offset; |
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136 static int resolved_constructor_offset; |
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137 static int array_klass_offset; |
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138 static int number_of_fake_oop_fields; |
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139 |
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140 static void compute_offsets(); |
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141 static bool offsets_computed; |
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142 static int classRedefinedCount_offset; |
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143 |
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144 public: |
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145 // Instance creation |
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146 static oop create_mirror(KlassHandle k, TRAPS); |
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147 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
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148 // Conversion |
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149 static klassOop as_klassOop(oop java_class); |
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150 // Testing |
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151 static bool is_primitive(oop java_class); |
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152 static BasicType primitive_type(oop java_class); |
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153 static oop primitive_mirror(BasicType t); |
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154 // JVM_NewInstance support |
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155 static methodOop resolved_constructor(oop java_class); |
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156 static void set_resolved_constructor(oop java_class, methodOop constructor); |
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157 // JVM_NewArray support |
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158 static klassOop array_klass(oop java_class); |
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159 static void set_array_klass(oop java_class, klassOop klass); |
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160 // compiler support for class operations |
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161 static int klass_offset_in_bytes() { return klass_offset; } |
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162 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } |
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163 static int array_klass_offset_in_bytes() { return array_klass_offset; } |
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164 // Support for classRedefinedCount field |
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165 static int classRedefinedCount(oop the_class_mirror); |
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166 static void set_classRedefinedCount(oop the_class_mirror, int value); |
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167 // Debugging |
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168 friend class JavaClasses; |
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169 friend class instanceKlass; // verification code accesses offsets |
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170 friend class ClassFileParser; // access to number_of_fake_fields |
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171 }; |
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172 |
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173 // Interface to java.lang.Thread objects |
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174 |
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175 class java_lang_Thread : AllStatic { |
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176 private: |
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177 // Note that for this class the layout changed between JDK1.2 and JDK1.3, |
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178 // so we compute the offsets at startup rather than hard-wiring them. |
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179 static int _name_offset; |
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180 static int _group_offset; |
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181 static int _contextClassLoader_offset; |
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182 static int _inheritedAccessControlContext_offset; |
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183 static int _priority_offset; |
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184 static int _eetop_offset; |
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185 static int _daemon_offset; |
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186 static int _stillborn_offset; |
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187 static int _stackSize_offset; |
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188 static int _tid_offset; |
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189 static int _thread_status_offset; |
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190 static int _park_blocker_offset; |
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191 static int _park_event_offset ; |
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192 |
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193 static void compute_offsets(); |
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194 |
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195 public: |
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196 // Instance creation |
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197 static oop create(); |
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198 // Returns the JavaThread associated with the thread obj |
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199 static JavaThread* thread(oop java_thread); |
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200 // Set JavaThread for instance |
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201 static void set_thread(oop java_thread, JavaThread* thread); |
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202 // Name |
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203 static typeArrayOop name(oop java_thread); |
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204 static void set_name(oop java_thread, typeArrayOop name); |
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205 // Priority |
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206 static ThreadPriority priority(oop java_thread); |
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207 static void set_priority(oop java_thread, ThreadPriority priority); |
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208 // Thread group |
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209 static oop threadGroup(oop java_thread); |
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210 // Stillborn |
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211 static bool is_stillborn(oop java_thread); |
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212 static void set_stillborn(oop java_thread); |
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213 // Alive (NOTE: this is not really a field, but provides the correct |
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214 // definition without doing a Java call) |
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215 static bool is_alive(oop java_thread); |
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216 // Daemon |
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217 static bool is_daemon(oop java_thread); |
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218 static void set_daemon(oop java_thread); |
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219 // Context ClassLoader |
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220 static oop context_class_loader(oop java_thread); |
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221 // Control context |
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222 static oop inherited_access_control_context(oop java_thread); |
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223 // Stack size hint |
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224 static jlong stackSize(oop java_thread); |
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225 // Thread ID |
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226 static jlong thread_id(oop java_thread); |
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227 |
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228 // Blocker object responsible for thread parking |
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229 static oop park_blocker(oop java_thread); |
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230 |
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231 // Pointer to type-stable park handler, encoded as jlong. |
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232 // Should be set when apparently null |
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233 // For details, see unsafe.cpp Unsafe_Unpark |
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234 static jlong park_event(oop java_thread); |
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235 static bool set_park_event(oop java_thread, jlong ptr); |
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236 |
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237 // Java Thread Status for JVMTI and M&M use. |
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238 // This thread status info is saved in threadStatus field of |
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239 // java.lang.Thread java class. |
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240 enum ThreadStatus { |
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241 NEW = 0, |
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242 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running |
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243 JVMTI_THREAD_STATE_RUNNABLE, |
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244 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() |
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245 JVMTI_THREAD_STATE_WAITING + |
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246 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + |
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247 JVMTI_THREAD_STATE_SLEEPING, |
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248 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() |
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249 JVMTI_THREAD_STATE_WAITING + |
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250 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + |
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251 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, |
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252 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) |
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253 JVMTI_THREAD_STATE_WAITING + |
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254 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + |
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255 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, |
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256 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() |
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257 JVMTI_THREAD_STATE_WAITING + |
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258 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + |
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259 JVMTI_THREAD_STATE_PARKED, |
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260 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) |
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261 JVMTI_THREAD_STATE_WAITING + |
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262 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + |
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263 JVMTI_THREAD_STATE_PARKED, |
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264 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block |
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265 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, |
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266 TERMINATED = JVMTI_THREAD_STATE_TERMINATED |
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267 }; |
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268 // Write thread status info to threadStatus field of java.lang.Thread. |
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269 static void set_thread_status(oop java_thread_oop, ThreadStatus status); |
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270 // Read thread status info from threadStatus field of java.lang.Thread. |
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271 static ThreadStatus get_thread_status(oop java_thread_oop); |
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272 |
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273 static const char* thread_status_name(oop java_thread_oop); |
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274 |
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275 // Debugging |
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276 friend class JavaClasses; |
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277 }; |
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278 |
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279 // Interface to java.lang.ThreadGroup objects |
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280 |
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281 class java_lang_ThreadGroup : AllStatic { |
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282 private: |
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283 static int _parent_offset; |
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284 static int _name_offset; |
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285 static int _threads_offset; |
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286 static int _groups_offset; |
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287 static int _maxPriority_offset; |
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288 static int _destroyed_offset; |
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289 static int _daemon_offset; |
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290 static int _vmAllowSuspension_offset; |
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291 static int _nthreads_offset; |
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292 static int _ngroups_offset; |
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293 |
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294 static void compute_offsets(); |
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295 |
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296 public: |
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297 // parent ThreadGroup |
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298 static oop parent(oop java_thread_group); |
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299 // name |
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300 static typeArrayOop name(oop java_thread_group); |
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301 // ("name as oop" accessor is not necessary) |
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302 // Number of threads in group |
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303 static int nthreads(oop java_thread_group); |
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304 // threads |
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305 static objArrayOop threads(oop java_thread_group); |
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306 // Number of threads in group |
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307 static int ngroups(oop java_thread_group); |
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308 // groups |
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309 static objArrayOop groups(oop java_thread_group); |
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310 // maxPriority in group |
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311 static ThreadPriority maxPriority(oop java_thread_group); |
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312 // Destroyed |
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313 static bool is_destroyed(oop java_thread_group); |
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314 // Daemon |
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315 static bool is_daemon(oop java_thread_group); |
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316 // vmAllowSuspension |
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317 static bool is_vmAllowSuspension(oop java_thread_group); |
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318 // Debugging |
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319 friend class JavaClasses; |
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320 }; |
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321 |
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322 |
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323 |
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324 // Interface to java.lang.Throwable objects |
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325 |
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326 class java_lang_Throwable: AllStatic { |
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327 friend class BacktraceBuilder; |
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328 |
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329 private: |
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330 // Offsets |
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331 enum { |
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332 hc_backtrace_offset = 0, |
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333 hc_detailMessage_offset = 1, |
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334 hc_cause_offset = 2, // New since 1.4 |
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335 hc_stackTrace_offset = 3 // New since 1.4 |
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336 }; |
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337 // Trace constants |
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338 enum { |
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339 trace_methods_offset = 0, |
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340 trace_bcis_offset = 1, |
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341 trace_next_offset = 2, |
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342 trace_size = 3, |
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343 trace_chunk_size = 32 |
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344 }; |
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345 |
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346 static int backtrace_offset; |
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347 static int detailMessage_offset; |
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348 static int cause_offset; |
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349 static int stackTrace_offset; |
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350 |
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351 // Printing |
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352 static char* print_stack_element_to_buffer(methodOop method, int bci); |
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353 static void print_to_stream(Handle stream, const char* str); |
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354 // StackTrace (programmatic access, new since 1.4) |
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355 static void clear_stacktrace(oop throwable); |
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356 // No stack trace available |
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357 static const char* no_stack_trace_message(); |
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358 |
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359 public: |
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360 // Backtrace |
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361 static oop backtrace(oop throwable); |
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362 static void set_backtrace(oop throwable, oop value); |
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363 // Needed by JVMTI to filter out this internal field. |
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364 static int get_backtrace_offset() { return backtrace_offset;} |
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365 static int get_detailMessage_offset() { return detailMessage_offset;} |
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366 // Message |
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367 static oop message(oop throwable); |
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368 static oop message(Handle throwable); |
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369 static void set_message(oop throwable, oop value); |
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370 // Print stack trace stored in exception by call-back to Java |
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371 // Note: this is no longer used in Merlin, but we still suppport |
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372 // it for compatibility. |
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373 static void print_stack_trace(oop throwable, oop print_stream); |
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374 static void print_stack_element(Handle stream, methodOop method, int bci); |
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375 static void print_stack_element(outputStream *st, methodOop method, int bci); |
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376 static void print_stack_usage(Handle stream); |
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377 |
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378 // Allocate space for backtrace (created but stack trace not filled in) |
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379 static void allocate_backtrace(Handle throwable, TRAPS); |
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380 // Fill in current stack trace for throwable with preallocated backtrace (no GC) |
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381 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); |
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382 |
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383 // Fill in current stack trace, can cause GC |
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384 static void fill_in_stack_trace(Handle throwable, TRAPS); |
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385 static void fill_in_stack_trace(Handle throwable); |
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386 // Programmatic access to stack trace |
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387 static oop get_stack_trace_element(oop throwable, int index, TRAPS); |
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388 static int get_stack_trace_depth(oop throwable, TRAPS); |
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389 // Printing |
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390 static void print(oop throwable, outputStream* st); |
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391 static void print(Handle throwable, outputStream* st); |
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392 static void print_stack_trace(oop throwable, outputStream* st); |
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393 // Debugging |
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394 friend class JavaClasses; |
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395 }; |
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396 |
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397 |
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398 // Interface to java.lang.reflect.AccessibleObject objects |
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399 |
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400 class java_lang_reflect_AccessibleObject: AllStatic { |
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401 private: |
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402 // Note that to reduce dependencies on the JDK we compute these |
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403 // offsets at run-time. |
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404 static int override_offset; |
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405 |
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406 static void compute_offsets(); |
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407 |
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408 public: |
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409 // Accessors |
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410 static jboolean override(oop reflect); |
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411 static void set_override(oop reflect, jboolean value); |
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412 |
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413 // Debugging |
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414 friend class JavaClasses; |
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415 }; |
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416 |
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417 |
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418 // Interface to java.lang.reflect.Method objects |
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419 |
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420 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { |
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421 private: |
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422 // Note that to reduce dependencies on the JDK we compute these |
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423 // offsets at run-time. |
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424 static int clazz_offset; |
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425 static int name_offset; |
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426 static int returnType_offset; |
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427 static int parameterTypes_offset; |
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428 static int exceptionTypes_offset; |
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429 static int slot_offset; |
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430 static int modifiers_offset; |
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431 static int signature_offset; |
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432 static int annotations_offset; |
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433 static int parameter_annotations_offset; |
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434 static int annotation_default_offset; |
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435 |
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436 static void compute_offsets(); |
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437 |
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438 public: |
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439 // Allocation |
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440 static Handle create(TRAPS); |
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441 |
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442 // Accessors |
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443 static oop clazz(oop reflect); |
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444 static void set_clazz(oop reflect, oop value); |
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445 |
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446 static oop name(oop method); |
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447 static void set_name(oop method, oop value); |
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448 |
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449 static oop return_type(oop method); |
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450 static void set_return_type(oop method, oop value); |
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451 |
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452 static oop parameter_types(oop method); |
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453 static void set_parameter_types(oop method, oop value); |
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454 |
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455 static oop exception_types(oop method); |
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456 static void set_exception_types(oop method, oop value); |
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457 |
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458 static int slot(oop reflect); |
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459 static void set_slot(oop reflect, int value); |
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460 |
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461 static int modifiers(oop method); |
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462 static void set_modifiers(oop method, int value); |
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463 |
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464 static bool has_signature_field(); |
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465 static oop signature(oop method); |
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466 static void set_signature(oop method, oop value); |
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467 |
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468 static bool has_annotations_field(); |
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469 static oop annotations(oop method); |
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470 static void set_annotations(oop method, oop value); |
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471 |
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472 static bool has_parameter_annotations_field(); |
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473 static oop parameter_annotations(oop method); |
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474 static void set_parameter_annotations(oop method, oop value); |
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475 |
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476 static bool has_annotation_default_field(); |
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477 static oop annotation_default(oop method); |
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478 static void set_annotation_default(oop method, oop value); |
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479 |
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480 // Debugging |
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481 friend class JavaClasses; |
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482 }; |
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483 |
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484 |
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485 // Interface to java.lang.reflect.Constructor objects |
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486 |
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487 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { |
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488 private: |
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489 // Note that to reduce dependencies on the JDK we compute these |
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490 // offsets at run-time. |
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491 static int clazz_offset; |
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492 static int parameterTypes_offset; |
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493 static int exceptionTypes_offset; |
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494 static int slot_offset; |
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495 static int modifiers_offset; |
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496 static int signature_offset; |
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497 static int annotations_offset; |
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498 static int parameter_annotations_offset; |
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499 |
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500 static void compute_offsets(); |
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501 |
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502 public: |
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503 // Allocation |
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504 static Handle create(TRAPS); |
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505 |
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506 // Accessors |
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507 static oop clazz(oop reflect); |
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508 static void set_clazz(oop reflect, oop value); |
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509 |
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510 static oop parameter_types(oop constructor); |
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511 static void set_parameter_types(oop constructor, oop value); |
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512 |
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513 static oop exception_types(oop constructor); |
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514 static void set_exception_types(oop constructor, oop value); |
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515 |
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516 static int slot(oop reflect); |
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517 static void set_slot(oop reflect, int value); |
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518 |
|
519 static int modifiers(oop constructor); |
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520 static void set_modifiers(oop constructor, int value); |
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521 |
|
522 static bool has_signature_field(); |
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523 static oop signature(oop constructor); |
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524 static void set_signature(oop constructor, oop value); |
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525 |
|
526 static bool has_annotations_field(); |
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527 static oop annotations(oop constructor); |
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528 static void set_annotations(oop constructor, oop value); |
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529 |
|
530 static bool has_parameter_annotations_field(); |
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531 static oop parameter_annotations(oop method); |
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532 static void set_parameter_annotations(oop method, oop value); |
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533 |
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534 // Debugging |
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535 friend class JavaClasses; |
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536 }; |
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537 |
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538 |
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539 // Interface to java.lang.reflect.Field objects |
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540 |
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541 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { |
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542 private: |
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543 // Note that to reduce dependencies on the JDK we compute these |
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544 // offsets at run-time. |
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545 static int clazz_offset; |
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546 static int name_offset; |
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547 static int type_offset; |
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548 static int slot_offset; |
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549 static int modifiers_offset; |
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550 static int signature_offset; |
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551 static int annotations_offset; |
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552 |
|
553 static void compute_offsets(); |
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554 |
|
555 public: |
|
556 // Allocation |
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557 static Handle create(TRAPS); |
|
558 |
|
559 // Accessors |
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560 static oop clazz(oop reflect); |
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561 static void set_clazz(oop reflect, oop value); |
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562 |
|
563 static oop name(oop field); |
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564 static void set_name(oop field, oop value); |
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565 |
|
566 static oop type(oop field); |
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567 static void set_type(oop field, oop value); |
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568 |
|
569 static int slot(oop reflect); |
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570 static void set_slot(oop reflect, int value); |
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571 |
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572 static int modifiers(oop field); |
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573 static void set_modifiers(oop field, int value); |
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574 |
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575 static bool has_signature_field(); |
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576 static oop signature(oop constructor); |
|
577 static void set_signature(oop constructor, oop value); |
|
578 |
|
579 static bool has_annotations_field(); |
|
580 static oop annotations(oop constructor); |
|
581 static void set_annotations(oop constructor, oop value); |
|
582 |
|
583 static bool has_parameter_annotations_field(); |
|
584 static oop parameter_annotations(oop method); |
|
585 static void set_parameter_annotations(oop method, oop value); |
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586 |
|
587 static bool has_annotation_default_field(); |
|
588 static oop annotation_default(oop method); |
|
589 static void set_annotation_default(oop method, oop value); |
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590 |
|
591 // Debugging |
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592 friend class JavaClasses; |
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593 }; |
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594 |
|
595 // Interface to sun.reflect.ConstantPool objects |
|
596 class sun_reflect_ConstantPool { |
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597 private: |
|
598 // Note that to reduce dependencies on the JDK we compute these |
|
599 // offsets at run-time. |
|
600 static int _cp_oop_offset; |
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601 |
|
602 static void compute_offsets(); |
|
603 |
|
604 public: |
|
605 // Allocation |
|
606 static Handle create(TRAPS); |
|
607 |
|
608 // Accessors |
|
609 static oop cp_oop(oop reflect); |
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610 static void set_cp_oop(oop reflect, oop value); |
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611 static int cp_oop_offset() { |
|
612 return _cp_oop_offset; |
|
613 } |
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614 |
|
615 // Debugging |
|
616 friend class JavaClasses; |
|
617 }; |
|
618 |
|
619 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects |
|
620 class sun_reflect_UnsafeStaticFieldAccessorImpl { |
|
621 private: |
|
622 static int _base_offset; |
|
623 static void compute_offsets(); |
|
624 |
|
625 public: |
|
626 static int base_offset() { |
|
627 return _base_offset; |
|
628 } |
|
629 |
|
630 // Debugging |
|
631 friend class JavaClasses; |
|
632 }; |
|
633 |
|
634 // Interface to java.lang primitive type boxing objects: |
|
635 // - java.lang.Boolean |
|
636 // - java.lang.Character |
|
637 // - java.lang.Float |
|
638 // - java.lang.Double |
|
639 // - java.lang.Byte |
|
640 // - java.lang.Short |
|
641 // - java.lang.Integer |
|
642 // - java.lang.Long |
|
643 |
|
644 // This could be separated out into 8 individual classes. |
|
645 |
|
646 class java_lang_boxing_object: AllStatic { |
|
647 private: |
|
648 enum { |
|
649 hc_value_offset = 0 |
|
650 }; |
|
651 static int value_offset; |
|
652 |
|
653 static oop initialize_and_allocate(klassOop klass, TRAPS); |
|
654 public: |
|
655 // Allocation. Returns a boxed value, or NULL for invalid type. |
|
656 static oop create(BasicType type, jvalue* value, TRAPS); |
|
657 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. |
|
658 static BasicType get_value(oop box, jvalue* value); |
|
659 static BasicType set_value(oop box, jvalue* value); |
|
660 |
|
661 static int value_offset_in_bytes() { return value_offset; } |
|
662 |
|
663 // Debugging |
|
664 friend class JavaClasses; |
|
665 }; |
|
666 |
|
667 |
|
668 |
|
669 // Interface to java.lang.ref.Reference objects |
|
670 |
|
671 class java_lang_ref_Reference: AllStatic { |
|
672 public: |
|
673 enum { |
|
674 hc_referent_offset = 0, |
|
675 hc_queue_offset = 1, |
|
676 hc_next_offset = 2, |
|
677 hc_discovered_offset = 3 // Is not last, see SoftRefs. |
|
678 }; |
|
679 enum { |
|
680 hc_static_lock_offset = 0, |
|
681 hc_static_pending_offset = 1 |
|
682 }; |
|
683 |
|
684 static int referent_offset; |
|
685 static int queue_offset; |
|
686 static int next_offset; |
|
687 static int discovered_offset; |
|
688 static int static_lock_offset; |
|
689 static int static_pending_offset; |
|
690 static int number_of_fake_oop_fields; |
|
691 |
|
692 // Accessors |
|
693 static oop referent(oop ref) { return *referent_addr(ref); } |
|
694 static void set_referent(oop ref, oop value); |
|
695 static oop* referent_addr(oop ref); |
|
696 |
|
697 static oop next(oop ref) { return *next_addr(ref); } |
|
698 static void set_next(oop ref, oop value); |
|
699 static oop* next_addr(oop ref); |
|
700 |
|
701 static oop discovered(oop ref) { return *discovered_addr(ref); } |
|
702 static void set_discovered(oop ref, oop value); |
|
703 static oop* discovered_addr(oop ref); |
|
704 |
|
705 // Accessors for statics |
|
706 static oop pending_list_lock() { return *pending_list_lock_addr(); } |
|
707 static oop pending_list() { return *pending_list_addr(); } |
|
708 |
|
709 static oop* pending_list_lock_addr(); |
|
710 static oop* pending_list_addr(); |
|
711 }; |
|
712 |
|
713 |
|
714 // Interface to java.lang.ref.SoftReference objects |
|
715 |
|
716 class java_lang_ref_SoftReference: public java_lang_ref_Reference { |
|
717 public: |
|
718 enum { |
|
719 // The timestamp is a long field and may need to be adjusted for alignment. |
|
720 hc_timestamp_offset = align_object_offset_(hc_discovered_offset + 1) |
|
721 }; |
|
722 enum { |
|
723 hc_static_clock_offset = 0 |
|
724 }; |
|
725 |
|
726 static int timestamp_offset; |
|
727 static int static_clock_offset; |
|
728 |
|
729 // Accessors |
|
730 static jlong timestamp(oop ref); |
|
731 |
|
732 // Accessors for statics |
|
733 static jlong clock(); |
|
734 static void set_clock(jlong value); |
|
735 }; |
|
736 |
|
737 |
|
738 // Interface to java.security.AccessControlContext objects |
|
739 |
|
740 class java_security_AccessControlContext: AllStatic { |
|
741 private: |
|
742 // Note that for this class the layout changed between JDK1.2 and JDK1.3, |
|
743 // so we compute the offsets at startup rather than hard-wiring them. |
|
744 static int _context_offset; |
|
745 static int _privilegedContext_offset; |
|
746 static int _isPrivileged_offset; |
|
747 |
|
748 static void compute_offsets(); |
|
749 public: |
|
750 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); |
|
751 |
|
752 // Debugging/initialization |
|
753 friend class JavaClasses; |
|
754 }; |
|
755 |
|
756 |
|
757 // Interface to java.lang.ClassLoader objects |
|
758 |
|
759 class java_lang_ClassLoader : AllStatic { |
|
760 private: |
|
761 enum { |
|
762 hc_parent_offset = 0 |
|
763 }; |
|
764 |
|
765 static int parent_offset; |
|
766 |
|
767 public: |
|
768 static oop parent(oop loader); |
|
769 |
|
770 static bool is_trusted_loader(oop loader); |
|
771 |
|
772 // Fix for 4474172 |
|
773 static oop non_reflection_class_loader(oop loader); |
|
774 |
|
775 // Debugging |
|
776 friend class JavaClasses; |
|
777 }; |
|
778 |
|
779 |
|
780 // Interface to java.lang.System objects |
|
781 |
|
782 class java_lang_System : AllStatic { |
|
783 private: |
|
784 enum { |
|
785 hc_static_in_offset = 0, |
|
786 hc_static_out_offset = 1, |
|
787 hc_static_err_offset = 2 |
|
788 }; |
|
789 |
|
790 static int offset_of_static_fields; |
|
791 static int static_in_offset; |
|
792 static int static_out_offset; |
|
793 static int static_err_offset; |
|
794 |
|
795 static void compute_offsets(); |
|
796 |
|
797 public: |
|
798 static int in_offset_in_bytes(); |
|
799 static int out_offset_in_bytes(); |
|
800 static int err_offset_in_bytes(); |
|
801 |
|
802 // Debugging |
|
803 friend class JavaClasses; |
|
804 }; |
|
805 |
|
806 |
|
807 // Interface to java.lang.StackTraceElement objects |
|
808 |
|
809 class java_lang_StackTraceElement: AllStatic { |
|
810 private: |
|
811 enum { |
|
812 hc_declaringClass_offset = 0, |
|
813 hc_methodName_offset = 1, |
|
814 hc_fileName_offset = 2, |
|
815 hc_lineNumber_offset = 3 |
|
816 }; |
|
817 |
|
818 static int declaringClass_offset; |
|
819 static int methodName_offset; |
|
820 static int fileName_offset; |
|
821 static int lineNumber_offset; |
|
822 |
|
823 public: |
|
824 // Setters |
|
825 static void set_declaringClass(oop element, oop value); |
|
826 static void set_methodName(oop element, oop value); |
|
827 static void set_fileName(oop element, oop value); |
|
828 static void set_lineNumber(oop element, int value); |
|
829 |
|
830 // Create an instance of StackTraceElement |
|
831 static oop create(methodHandle m, int bci, TRAPS); |
|
832 |
|
833 // Debugging |
|
834 friend class JavaClasses; |
|
835 }; |
|
836 |
|
837 |
|
838 // Interface to java.lang.AssertionStatusDirectives objects |
|
839 |
|
840 class java_lang_AssertionStatusDirectives: AllStatic { |
|
841 private: |
|
842 enum { |
|
843 hc_classes_offset, |
|
844 hc_classEnabled_offset, |
|
845 hc_packages_offset, |
|
846 hc_packageEnabled_offset, |
|
847 hc_deflt_offset |
|
848 }; |
|
849 |
|
850 static int classes_offset; |
|
851 static int classEnabled_offset; |
|
852 static int packages_offset; |
|
853 static int packageEnabled_offset; |
|
854 static int deflt_offset; |
|
855 |
|
856 public: |
|
857 // Setters |
|
858 static void set_classes(oop obj, oop val); |
|
859 static void set_classEnabled(oop obj, oop val); |
|
860 static void set_packages(oop obj, oop val); |
|
861 static void set_packageEnabled(oop obj, oop val); |
|
862 static void set_deflt(oop obj, bool val); |
|
863 // Debugging |
|
864 friend class JavaClasses; |
|
865 }; |
|
866 |
|
867 |
|
868 class java_nio_Buffer: AllStatic { |
|
869 private: |
|
870 static int _limit_offset; |
|
871 |
|
872 public: |
|
873 static int limit_offset(); |
|
874 static void compute_offsets(); |
|
875 }; |
|
876 |
|
877 class sun_misc_AtomicLongCSImpl: AllStatic { |
|
878 private: |
|
879 static int _value_offset; |
|
880 |
|
881 public: |
|
882 static int value_offset(); |
|
883 static void compute_offsets(); |
|
884 }; |
|
885 |
|
886 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { |
|
887 private: |
|
888 static int _owner_offset; |
|
889 public: |
|
890 static void initialize(TRAPS); |
|
891 static oop get_owner_threadObj(oop obj); |
|
892 }; |
|
893 |
|
894 // Interface to hard-coded offset checking |
|
895 |
|
896 class JavaClasses : AllStatic { |
|
897 private: |
|
898 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
|
899 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
|
900 public: |
|
901 static void compute_hard_coded_offsets(); |
|
902 static void compute_offsets(); |
|
903 static void check_offsets() PRODUCT_RETURN; |
|
904 }; |