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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);
|
|
|
380 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
|
|
|
381 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
|
|
|
382
|
|
|
383 // Fill in current stack trace, can cause GC
|
|
|
384 static void fill_in_stack_trace(Handle throwable, TRAPS);
|
|
|
385 static void fill_in_stack_trace(Handle throwable);
|
|
|
386 // Programmatic access to stack trace
|
|
|
387 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
|
|
|
388 static int get_stack_trace_depth(oop throwable, TRAPS);
|
|
|
389 // Printing
|
|
|
390 static void print(oop throwable, outputStream* st);
|
|
|
391 static void print(Handle throwable, outputStream* st);
|
|
|
392 static void print_stack_trace(oop throwable, outputStream* st);
|
|
|
393 // Debugging
|
|
|
394 friend class JavaClasses;
|
|
|
395 };
|
|
|
396
|
|
|
397
|
|
|
398 // Interface to java.lang.reflect.AccessibleObject objects
|
|
|
399
|
|
|
400 class java_lang_reflect_AccessibleObject: AllStatic {
|
|
|
401 private:
|
|
|
402 // Note that to reduce dependencies on the JDK we compute these
|
|
|
403 // offsets at run-time.
|
|
|
404 static int override_offset;
|
|
|
405
|
|
|
406 static void compute_offsets();
|
|
|
407
|
|
|
408 public:
|
|
|
409 // Accessors
|
|
|
410 static jboolean override(oop reflect);
|
|
|
411 static void set_override(oop reflect, jboolean value);
|
|
|
412
|
|
|
413 // Debugging
|
|
|
414 friend class JavaClasses;
|
|
|
415 };
|
|
|
416
|
|
|
417
|
|
|
418 // Interface to java.lang.reflect.Method objects
|
|
|
419
|
|
|
420 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
|
|
|
421 private:
|
|
|
422 // Note that to reduce dependencies on the JDK we compute these
|
|
|
423 // offsets at run-time.
|
|
|
424 static int clazz_offset;
|
|
|
425 static int name_offset;
|
|
|
426 static int returnType_offset;
|
|
|
427 static int parameterTypes_offset;
|
|
|
428 static int exceptionTypes_offset;
|
|
|
429 static int slot_offset;
|
|
|
430 static int modifiers_offset;
|
|
|
431 static int signature_offset;
|
|
|
432 static int annotations_offset;
|
|
|
433 static int parameter_annotations_offset;
|
|
|
434 static int annotation_default_offset;
|
|
|
435
|
|
|
436 static void compute_offsets();
|
|
|
437
|
|
|
438 public:
|
|
|
439 // Allocation
|
|
|
440 static Handle create(TRAPS);
|
|
|
441
|
|
|
442 // Accessors
|
|
|
443 static oop clazz(oop reflect);
|
|
|
444 static void set_clazz(oop reflect, oop value);
|
|
|
445
|
|
|
446 static oop name(oop method);
|
|
|
447 static void set_name(oop method, oop value);
|
|
|
448
|
|
|
449 static oop return_type(oop method);
|
|
|
450 static void set_return_type(oop method, oop value);
|
|
|
451
|
|
|
452 static oop parameter_types(oop method);
|
|
|
453 static void set_parameter_types(oop method, oop value);
|
|
|
454
|
|
|
455 static oop exception_types(oop method);
|
|
|
456 static void set_exception_types(oop method, oop value);
|
|
|
457
|
|
|
458 static int slot(oop reflect);
|
|
|
459 static void set_slot(oop reflect, int value);
|
|
|
460
|
|
|
461 static int modifiers(oop method);
|
|
|
462 static void set_modifiers(oop method, int value);
|
|
|
463
|
|
|
464 static bool has_signature_field();
|
|
|
465 static oop signature(oop method);
|
|
|
466 static void set_signature(oop method, oop value);
|
|
|
467
|
|
|
468 static bool has_annotations_field();
|
|
|
469 static oop annotations(oop method);
|
|
|
470 static void set_annotations(oop method, oop value);
|
|
|
471
|
|
|
472 static bool has_parameter_annotations_field();
|
|
|
473 static oop parameter_annotations(oop method);
|
|
|
474 static void set_parameter_annotations(oop method, oop value);
|
|
|
475
|
|
|
476 static bool has_annotation_default_field();
|
|
|
477 static oop annotation_default(oop method);
|
|
|
478 static void set_annotation_default(oop method, oop value);
|
|
|
479
|
|
|
480 // Debugging
|
|
|
481 friend class JavaClasses;
|
|
|
482 };
|
|
|
483
|
|
|
484
|
|
|
485 // Interface to java.lang.reflect.Constructor objects
|
|
|
486
|
|
|
487 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
|
|
|
488 private:
|
|
|
489 // Note that to reduce dependencies on the JDK we compute these
|
|
|
490 // offsets at run-time.
|
|
|
491 static int clazz_offset;
|
|
|
492 static int parameterTypes_offset;
|
|
|
493 static int exceptionTypes_offset;
|
|
|
494 static int slot_offset;
|
|
|
495 static int modifiers_offset;
|
|
|
496 static int signature_offset;
|
|
|
497 static int annotations_offset;
|
|
|
498 static int parameter_annotations_offset;
|
|
|
499
|
|
|
500 static void compute_offsets();
|
|
|
501
|
|
|
502 public:
|
|
|
503 // Allocation
|
|
|
504 static Handle create(TRAPS);
|
|
|
505
|
|
|
506 // Accessors
|
|
|
507 static oop clazz(oop reflect);
|
|
|
508 static void set_clazz(oop reflect, oop value);
|
|
|
509
|
|
|
510 static oop parameter_types(oop constructor);
|
|
|
511 static void set_parameter_types(oop constructor, oop value);
|
|
|
512
|
|
|
513 static oop exception_types(oop constructor);
|
|
|
514 static void set_exception_types(oop constructor, oop value);
|
|
|
515
|
|
|
516 static int slot(oop reflect);
|
|
|
517 static void set_slot(oop reflect, int value);
|
|
|
518
|
|
|
519 static int modifiers(oop constructor);
|
|
|
520 static void set_modifiers(oop constructor, int value);
|
|
|
521
|
|
|
522 static bool has_signature_field();
|
|
|
523 static oop signature(oop constructor);
|
|
|
524 static void set_signature(oop constructor, oop value);
|
|
|
525
|
|
|
526 static bool has_annotations_field();
|
|
|
527 static oop annotations(oop constructor);
|
|
|
528 static void set_annotations(oop constructor, oop value);
|
|
|
529
|
|
|
530 static bool has_parameter_annotations_field();
|
|
|
531 static oop parameter_annotations(oop method);
|
|
|
532 static void set_parameter_annotations(oop method, oop value);
|
|
|
533
|
|
|
534 // Debugging
|
|
|
535 friend class JavaClasses;
|
|
|
536 };
|
|
|
537
|
|
|
538
|
|
|
539 // Interface to java.lang.reflect.Field objects
|
|
|
540
|
|
|
541 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
|
|
|
542 private:
|
|
|
543 // Note that to reduce dependencies on the JDK we compute these
|
|
|
544 // offsets at run-time.
|
|
|
545 static int clazz_offset;
|
|
|
546 static int name_offset;
|
|
|
547 static int type_offset;
|
|
|
548 static int slot_offset;
|
|
|
549 static int modifiers_offset;
|
|
|
550 static int signature_offset;
|
|
|
551 static int annotations_offset;
|
|
|
552
|
|
|
553 static void compute_offsets();
|
|
|
554
|
|
|
555 public:
|
|
|
556 // Allocation
|
|
|
557 static Handle create(TRAPS);
|
|
|
558
|
|
|
559 // Accessors
|
|
|
560 static oop clazz(oop reflect);
|
|
|
561 static void set_clazz(oop reflect, oop value);
|
|
|
562
|
|
|
563 static oop name(oop field);
|
|
|
564 static void set_name(oop field, oop value);
|
|
|
565
|
|
|
566 static oop type(oop field);
|
|
|
567 static void set_type(oop field, oop value);
|
|
|
568
|
|
|
569 static int slot(oop reflect);
|
|
|
570 static void set_slot(oop reflect, int value);
|
|
|
571
|
|
|
572 static int modifiers(oop field);
|
|
|
573 static void set_modifiers(oop field, int value);
|
|
|
574
|
|
|
575 static bool has_signature_field();
|
|
|
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);
|
|
|
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);
|
|
|
590
|
|
|
591 // Debugging
|
|
|
592 friend class JavaClasses;
|
|
|
593 };
|
|
|
594
|
|
|
595 // Interface to sun.reflect.ConstantPool objects
|
|
|
596 class sun_reflect_ConstantPool {
|
|
|
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;
|
|
|
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);
|
|
|
610 static void set_cp_oop(oop reflect, oop value);
|
|
|
611 static int cp_oop_offset() {
|
|
|
612 return _cp_oop_offset;
|
|
|
613 }
|
|
|
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:
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|
|
824 // Setters
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|
|
825 static void set_declaringClass(oop element, oop value);
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|
|
826 static void set_methodName(oop element, oop value);
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|
|
827 static void set_fileName(oop element, oop value);
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|
|
828 static void set_lineNumber(oop element, int value);
|
|
|
829
|
|
|
830 // Create an instance of StackTraceElement
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|
|
831 static oop create(methodHandle m, int bci, TRAPS);
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|
832
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|
833 // Debugging
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|
|
834 friend class JavaClasses;
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|
|
835 };
|
|
|
836
|
|
|
837
|
|
|
838 // Interface to java.lang.AssertionStatusDirectives objects
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|
|
839
|
|
|
840 class java_lang_AssertionStatusDirectives: AllStatic {
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|
|
841 private:
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|
|
842 enum {
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|
|
843 hc_classes_offset,
|
|
|
844 hc_classEnabled_offset,
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|
|
845 hc_packages_offset,
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|
|
846 hc_packageEnabled_offset,
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|
|
847 hc_deflt_offset
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|
|
848 };
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|
|
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:
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|
|
857 // Setters
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|
|
858 static void set_classes(oop obj, oop val);
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|
|
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:
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|
|
873 static int limit_offset();
|
|
|
874 static void compute_offsets();
|
|
|
875 };
|
|
|
876
|
|
|
877 class sun_misc_AtomicLongCSImpl: AllStatic {
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|
|
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 };
|
