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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 # include "incls/_precompiled.incl" |
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26 # include "incls/_javaClasses.cpp.incl" |
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27 |
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28 // Helpful macro for computing field offsets at run time rather than hardcoding them |
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29 #define COMPUTE_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, signature_symbol) \ |
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30 { \ |
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31 fieldDescriptor fd; \ |
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32 instanceKlass* ik = instanceKlass::cast(klass_oop); \ |
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33 if (!ik->find_local_field(name_symbol, signature_symbol, &fd)) { \ |
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34 fatal("Invalid layout of " klass_name_as_C_str); \ |
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35 } \ |
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36 dest_offset = fd.offset(); \ |
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37 } |
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38 |
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39 // Same as above but for "optional" offsets that might not be present in certain JDK versions |
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40 #define COMPUTE_OPTIONAL_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, signature_symbol) \ |
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41 { \ |
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42 fieldDescriptor fd; \ |
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43 instanceKlass* ik = instanceKlass::cast(klass_oop); \ |
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44 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) { \ |
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45 dest_offset = fd.offset(); \ |
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46 } \ |
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47 } |
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48 |
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49 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) { |
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50 // Create the String object first, so there's a chance that the String |
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51 // and the char array it points to end up in the same cache line. |
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52 oop obj; |
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53 if (tenured) { |
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54 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_permanent_instance(CHECK_NH); |
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55 } else { |
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56 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_instance(CHECK_NH); |
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57 } |
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58 |
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59 // Create the char array. The String object must be handlized here |
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60 // because GC can happen as a result of the allocation attempt. |
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61 Handle h_obj(THREAD, obj); |
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62 typeArrayOop buffer; |
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63 if (tenured) { |
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64 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH); |
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65 } else { |
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66 buffer = oopFactory::new_charArray(length, CHECK_NH); |
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67 } |
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68 |
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69 // Point the String at the char array |
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70 obj = h_obj(); |
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71 set_value(obj, buffer); |
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72 // No need to zero the offset, allocation zero'ed the entire String object |
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73 assert(offset(obj) == 0, "initial String offset should be zero"); |
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74 //set_offset(obj, 0); |
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75 set_count(obj, length); |
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76 |
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77 return h_obj; |
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78 } |
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79 |
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80 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) { |
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81 Handle h_obj = basic_create(length, tenured, CHECK_NH); |
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82 typeArrayOop buffer = value(h_obj()); |
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83 for (int index = 0; index < length; index++) { |
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84 buffer->char_at_put(index, unicode[index]); |
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85 } |
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86 return h_obj; |
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87 } |
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88 |
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89 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { |
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90 return basic_create_from_unicode(unicode, length, false, CHECK_NH); |
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91 } |
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92 |
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93 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) { |
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94 return basic_create_from_unicode(unicode, length, true, CHECK_NH); |
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95 } |
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96 |
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97 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { |
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98 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0); |
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99 return h_obj(); |
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100 } |
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101 |
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102 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { |
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103 if (utf8_str == NULL) { |
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104 return Handle(); |
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105 } |
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106 int length = UTF8::unicode_length(utf8_str); |
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107 Handle h_obj = basic_create(length, false, CHECK_NH); |
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108 if (length > 0) { |
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109 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); |
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110 } |
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111 return h_obj; |
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112 } |
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113 |
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114 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { |
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115 Handle h_obj = create_from_str(utf8_str, CHECK_0); |
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116 return h_obj(); |
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117 } |
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118 |
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119 Handle java_lang_String::create_from_symbol(symbolHandle symbol, TRAPS) { |
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120 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); |
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121 Handle h_obj = basic_create(length, false, CHECK_NH); |
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122 if (length > 0) { |
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123 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); |
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124 } |
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125 return h_obj; |
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126 } |
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127 |
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128 // Converts a C string to a Java String based on current encoding |
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129 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { |
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130 assert(str != NULL, "bad arguments"); |
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131 |
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132 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); |
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133 static to_java_string_fn_t _to_java_string_fn = NULL; |
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134 |
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135 if (_to_java_string_fn == NULL) { |
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136 void *lib_handle = os::native_java_library(); |
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137 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, hpi::dll_lookup(lib_handle, "NewStringPlatform")); |
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138 if (_to_java_string_fn == NULL) { |
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139 fatal("NewStringPlatform missing"); |
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140 } |
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141 } |
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142 |
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143 jstring js = NULL; |
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144 { JavaThread* thread = (JavaThread*)THREAD; |
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145 assert(thread->is_Java_thread(), "must be java thread"); |
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146 ThreadToNativeFromVM ttn(thread); |
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147 HandleMark hm(thread); |
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148 js = (_to_java_string_fn)(thread->jni_environment(), str); |
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149 } |
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150 return Handle(THREAD, JNIHandles::resolve(js)); |
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151 } |
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152 |
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153 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { |
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154 oop obj = java_string(); |
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155 // Typical usage is to convert all '/' to '.' in string. |
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156 typeArrayOop value = java_lang_String::value(obj); |
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157 int offset = java_lang_String::offset(obj); |
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158 int length = java_lang_String::length(obj); |
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159 |
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160 // First check if any from_char exist |
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161 int index; // Declared outside, used later |
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162 for (index = 0; index < length; index++) { |
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163 if (value->char_at(index + offset) == from_char) { |
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164 break; |
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165 } |
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166 } |
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167 if (index == length) { |
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168 // No from_char, so do not copy. |
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169 return java_string; |
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170 } |
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171 |
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172 // Create new UNICODE buffer. Must handlize value because GC |
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173 // may happen during String and char array creation. |
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174 typeArrayHandle h_value(THREAD, value); |
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175 Handle string = basic_create(length, false, CHECK_NH); |
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176 |
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177 typeArrayOop from_buffer = h_value(); |
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178 typeArrayOop to_buffer = java_lang_String::value(string()); |
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179 |
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180 // Copy contents |
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181 for (index = 0; index < length; index++) { |
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182 jchar c = from_buffer->char_at(index + offset); |
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183 if (c == from_char) { |
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184 c = to_char; |
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185 } |
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186 to_buffer->char_at_put(index, c); |
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187 } |
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188 return string; |
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189 } |
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190 |
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191 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { |
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192 typeArrayOop value = java_lang_String::value(java_string); |
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193 int offset = java_lang_String::offset(java_string); |
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194 length = java_lang_String::length(java_string); |
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195 |
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196 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); |
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197 for (int index = 0; index < length; index++) { |
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198 result[index] = value->char_at(index + offset); |
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199 } |
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200 return result; |
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201 } |
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202 |
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203 symbolHandle java_lang_String::as_symbol(Handle java_string, TRAPS) { |
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204 oop obj = java_string(); |
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205 typeArrayOop value = java_lang_String::value(obj); |
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206 int offset = java_lang_String::offset(obj); |
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207 int length = java_lang_String::length(obj); |
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208 |
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209 ResourceMark rm(THREAD); |
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210 symbolHandle result; |
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211 |
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212 if (length > 0) { |
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213 int utf8_length = UNICODE::utf8_length(value->char_at_addr(offset), length); |
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214 char* chars = NEW_RESOURCE_ARRAY(char, utf8_length + 1); |
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215 UNICODE::convert_to_utf8(value->char_at_addr(offset), length, chars); |
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216 // Allocate the symbol |
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217 result = oopFactory::new_symbol_handle(chars, utf8_length, CHECK_(symbolHandle())); |
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218 } else { |
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219 result = oopFactory::new_symbol_handle("", 0, CHECK_(symbolHandle())); |
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220 } |
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221 return result; |
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222 } |
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223 |
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224 int java_lang_String::utf8_length(oop java_string) { |
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225 typeArrayOop value = java_lang_String::value(java_string); |
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226 int offset = java_lang_String::offset(java_string); |
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227 int length = java_lang_String::length(java_string); |
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228 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
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229 return UNICODE::utf8_length(position, length); |
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230 } |
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231 |
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232 char* java_lang_String::as_utf8_string(oop java_string) { |
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233 typeArrayOop value = java_lang_String::value(java_string); |
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234 int offset = java_lang_String::offset(java_string); |
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235 int length = java_lang_String::length(java_string); |
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236 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
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237 return UNICODE::as_utf8(position, length); |
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238 } |
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239 |
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240 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { |
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241 typeArrayOop value = java_lang_String::value(java_string); |
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242 int offset = java_lang_String::offset(java_string); |
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243 int length = java_lang_String::length(java_string); |
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244 assert(start + len <= length, "just checking"); |
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245 jchar* position = value->char_at_addr(offset + start); |
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246 return UNICODE::as_utf8(position, len); |
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247 } |
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248 |
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249 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { |
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250 assert(SharedSkipVerify || |
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251 java_string->klass() == SystemDictionary::string_klass(), |
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252 "must be java_string"); |
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253 typeArrayOop value = java_lang_String::value(java_string); |
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254 int offset = java_lang_String::offset(java_string); |
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255 int length = java_lang_String::length(java_string); |
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256 if (length != len) { |
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257 return false; |
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258 } |
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259 for (int i = 0; i < len; i++) { |
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260 if (value->char_at(i + offset) != chars[i]) { |
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261 return false; |
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262 } |
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263 } |
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264 return true; |
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265 } |
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266 |
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267 void java_lang_String::print(Handle java_string, outputStream* st) { |
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268 oop obj = java_string(); |
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269 assert(obj->klass() == SystemDictionary::string_klass(), "must be java_string"); |
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270 typeArrayOop value = java_lang_String::value(obj); |
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271 int offset = java_lang_String::offset(obj); |
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272 int length = java_lang_String::length(obj); |
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273 |
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274 int end = MIN2(length, 100); |
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275 if (value == NULL) { |
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276 // This can happen if, e.g., printing a String |
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277 // object before its initializer has been called |
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278 st->print_cr("NULL"); |
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279 } else { |
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280 st->print("\""); |
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281 for (int index = 0; index < length; index++) { |
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282 st->print("%c", value->char_at(index + offset)); |
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283 } |
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284 st->print("\""); |
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285 } |
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286 } |
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287 |
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288 |
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289 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { |
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290 assert(k->java_mirror() == NULL, "should only assign mirror once"); |
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291 // Use this moment of initialization to cache modifier_flags also, |
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292 // to support Class.getModifiers(). Instance classes recalculate |
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293 // the cached flags after the class file is parsed, but before the |
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294 // class is put into the system dictionary. |
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295 int computed_modifiers = k->compute_modifier_flags(CHECK_0); |
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296 k->set_modifier_flags(computed_modifiers); |
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297 if (SystemDictionary::class_klass_loaded()) { |
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298 // Allocate mirror (java.lang.Class instance) |
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299 Handle mirror = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); |
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300 // Setup indirections |
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301 mirror->obj_field_put(klass_offset, k()); |
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302 k->set_java_mirror(mirror()); |
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303 // It might also have a component mirror. This mirror must already exist. |
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304 if (k->oop_is_javaArray()) { |
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305 Handle comp_mirror; |
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306 if (k->oop_is_typeArray()) { |
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307 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); |
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308 comp_mirror = Universe::java_mirror(type); |
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309 assert(comp_mirror.not_null(), "must have primitive mirror"); |
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310 } else if (k->oop_is_objArray()) { |
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311 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); |
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312 if (element_klass != NULL |
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313 && (Klass::cast(element_klass)->oop_is_instance() || |
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314 Klass::cast(element_klass)->oop_is_javaArray())) { |
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315 comp_mirror = Klass::cast(element_klass)->java_mirror(); |
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316 assert(comp_mirror.not_null(), "must have element mirror"); |
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317 } |
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318 // else some object array internal to the VM, like systemObjArrayKlassObj |
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319 } |
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320 if (comp_mirror.not_null()) { |
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321 // Two-way link between the array klass and its component mirror: |
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322 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); |
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323 set_array_klass(comp_mirror(), k->as_klassOop()); |
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324 } |
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325 } |
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326 return mirror(); |
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327 } else { |
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328 return NULL; |
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329 } |
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330 } |
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331 |
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332 |
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333 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { |
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334 // This should be improved by adding a field at the Java level or by |
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335 // introducing a new VM klass (see comment in ClassFileParser) |
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336 oop java_class = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); |
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337 if (type != T_VOID) { |
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338 klassOop aklass = Universe::typeArrayKlassObj(type); |
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339 assert(aklass != NULL, "correct bootstrap"); |
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340 set_array_klass(java_class, aklass); |
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341 } |
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342 return java_class; |
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343 } |
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344 |
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345 |
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346 klassOop java_lang_Class::as_klassOop(oop java_class) { |
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347 //%note memory_2 |
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348 klassOop k = klassOop(java_class->obj_field(klass_offset)); |
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349 assert(k == NULL || k->is_klass(), "type check"); |
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350 return k; |
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351 } |
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352 |
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353 |
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354 klassOop java_lang_Class::array_klass(oop java_class) { |
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355 klassOop k = klassOop(java_class->obj_field(array_klass_offset)); |
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356 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); |
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357 return k; |
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358 } |
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359 |
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360 |
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361 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { |
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362 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); |
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363 java_class->obj_field_put(array_klass_offset, klass); |
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364 } |
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365 |
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366 |
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367 methodOop java_lang_Class::resolved_constructor(oop java_class) { |
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368 oop constructor = java_class->obj_field(resolved_constructor_offset); |
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369 assert(constructor == NULL || constructor->is_method(), "should be method"); |
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370 return methodOop(constructor); |
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371 } |
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372 |
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373 |
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374 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { |
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375 assert(constructor->is_method(), "should be method"); |
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376 java_class->obj_field_put(resolved_constructor_offset, constructor); |
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377 } |
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378 |
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379 |
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380 bool java_lang_Class::is_primitive(oop java_class) { |
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381 klassOop k = klassOop(java_class->obj_field(klass_offset)); |
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382 return k == NULL; |
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383 } |
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384 |
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385 |
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386 BasicType java_lang_Class::primitive_type(oop java_class) { |
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387 assert(java_lang_Class::is_primitive(java_class), "just checking"); |
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388 klassOop ak = klassOop(java_class->obj_field(array_klass_offset)); |
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389 BasicType type = T_VOID; |
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390 if (ak != NULL) { |
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391 // Note: create_basic_type_mirror above initializes ak to a non-null value. |
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392 type = arrayKlass::cast(ak)->element_type(); |
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393 } else { |
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394 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); |
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395 } |
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396 assert(Universe::java_mirror(type) == java_class, "must be consistent"); |
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397 return type; |
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398 } |
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399 |
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400 |
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401 oop java_lang_Class::primitive_mirror(BasicType t) { |
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402 oop mirror = Universe::java_mirror(t); |
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403 assert(mirror != NULL && mirror->is_a(SystemDictionary::class_klass()), "must be a Class"); |
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404 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); |
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405 return mirror; |
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406 } |
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407 |
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408 bool java_lang_Class::offsets_computed = false; |
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409 int java_lang_Class::classRedefinedCount_offset = -1; |
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410 |
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411 void java_lang_Class::compute_offsets() { |
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412 assert(!offsets_computed, "offsets should be initialized only once"); |
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413 offsets_computed = true; |
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414 |
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415 klassOop k = SystemDictionary::class_klass(); |
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416 // The classRedefinedCount field is only present starting in 1.5, |
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417 // so don't go fatal. |
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418 COMPUTE_OPTIONAL_OFFSET("java.lang.Class", classRedefinedCount_offset, |
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419 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); |
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420 } |
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421 |
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422 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { |
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423 if (!JDK_Version::is_gte_jdk15x_version() |
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424 || classRedefinedCount_offset == -1) { |
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425 // The classRedefinedCount field is only present starting in 1.5. |
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426 // If we don't have an offset for it then just return -1 as a marker. |
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427 return -1; |
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428 } |
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429 |
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430 return the_class_mirror->int_field(classRedefinedCount_offset); |
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431 } |
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432 |
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433 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { |
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434 if (!JDK_Version::is_gte_jdk15x_version() |
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435 || classRedefinedCount_offset == -1) { |
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436 // The classRedefinedCount field is only present starting in 1.5. |
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437 // If we don't have an offset for it then nothing to set. |
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438 return; |
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439 } |
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440 |
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441 the_class_mirror->int_field_put(classRedefinedCount_offset, value); |
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442 } |
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443 |
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444 |
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445 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the |
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446 // platform thread structure, and a eetop offset which was used for thread |
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447 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures |
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448 // merged, so in the HotSpot VM we just use the eetop field for the thread |
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449 // instead of the privateInfo_offset. |
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450 // |
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451 // Note: The stackSize field is only present starting in 1.4. |
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452 |
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453 int java_lang_Thread::_name_offset = 0; |
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454 int java_lang_Thread::_group_offset = 0; |
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455 int java_lang_Thread::_contextClassLoader_offset = 0; |
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456 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; |
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457 int java_lang_Thread::_priority_offset = 0; |
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458 int java_lang_Thread::_eetop_offset = 0; |
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459 int java_lang_Thread::_daemon_offset = 0; |
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460 int java_lang_Thread::_stillborn_offset = 0; |
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461 int java_lang_Thread::_stackSize_offset = 0; |
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462 int java_lang_Thread::_tid_offset = 0; |
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463 int java_lang_Thread::_thread_status_offset = 0; |
|
464 int java_lang_Thread::_park_blocker_offset = 0; |
|
465 int java_lang_Thread::_park_event_offset = 0 ; |
|
466 |
|
467 |
|
468 void java_lang_Thread::compute_offsets() { |
|
469 assert(_group_offset == 0, "offsets should be initialized only once"); |
|
470 |
|
471 klassOop k = SystemDictionary::thread_klass(); |
|
472 COMPUTE_OFFSET("java.lang.Thread", _name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); |
|
473 COMPUTE_OFFSET("java.lang.Thread", _group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); |
|
474 COMPUTE_OFFSET("java.lang.Thread", _contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); |
|
475 COMPUTE_OFFSET("java.lang.Thread", _inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); |
|
476 COMPUTE_OFFSET("java.lang.Thread", _priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); |
|
477 COMPUTE_OFFSET("java.lang.Thread", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
|
478 COMPUTE_OFFSET("java.lang.Thread", _eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); |
|
479 COMPUTE_OFFSET("java.lang.Thread", _stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); |
|
480 // The stackSize field is only present starting in 1.4, so don't go fatal. |
|
481 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); |
|
482 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. |
|
483 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); |
|
484 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); |
|
485 // The parkBlocker field is only present starting in 1.6, so don't go fatal. |
|
486 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); |
|
487 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_event_offset, k, vmSymbols::park_event_name(), |
|
488 vmSymbols::long_signature()); |
|
489 } |
|
490 |
|
491 |
|
492 JavaThread* java_lang_Thread::thread(oop java_thread) { |
|
493 return (JavaThread*) java_thread->obj_field(_eetop_offset); |
|
494 } |
|
495 |
|
496 |
|
497 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { |
|
498 // We are storing a JavaThread* (malloc'ed data) into a long field in the thread |
|
499 // object. The store has to be 64-bit wide so we use a pointer store, but we |
|
500 // cannot call oopDesc::obj_field_put since it includes a write barrier! |
|
501 oop* addr = java_thread->obj_field_addr(_eetop_offset); |
|
502 *addr = (oop) thread; |
|
503 } |
|
504 |
|
505 |
|
506 typeArrayOop java_lang_Thread::name(oop java_thread) { |
|
507 oop name = java_thread->obj_field(_name_offset); |
|
508 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); |
|
509 return typeArrayOop(name); |
|
510 } |
|
511 |
|
512 |
|
513 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { |
|
514 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); |
|
515 java_thread->obj_field_put(_name_offset, name); |
|
516 } |
|
517 |
|
518 |
|
519 ThreadPriority java_lang_Thread::priority(oop java_thread) { |
|
520 return (ThreadPriority)java_thread->int_field(_priority_offset); |
|
521 } |
|
522 |
|
523 |
|
524 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { |
|
525 java_thread->int_field_put(_priority_offset, priority); |
|
526 } |
|
527 |
|
528 |
|
529 oop java_lang_Thread::threadGroup(oop java_thread) { |
|
530 return java_thread->obj_field(_group_offset); |
|
531 } |
|
532 |
|
533 |
|
534 bool java_lang_Thread::is_stillborn(oop java_thread) { |
|
535 return java_thread->bool_field(_stillborn_offset) != 0; |
|
536 } |
|
537 |
|
538 |
|
539 // We never have reason to turn the stillborn bit off |
|
540 void java_lang_Thread::set_stillborn(oop java_thread) { |
|
541 java_thread->bool_field_put(_stillborn_offset, true); |
|
542 } |
|
543 |
|
544 |
|
545 bool java_lang_Thread::is_alive(oop java_thread) { |
|
546 JavaThread* thr = java_lang_Thread::thread(java_thread); |
|
547 return (thr != NULL); |
|
548 } |
|
549 |
|
550 |
|
551 bool java_lang_Thread::is_daemon(oop java_thread) { |
|
552 return java_thread->bool_field(_daemon_offset) != 0; |
|
553 } |
|
554 |
|
555 |
|
556 void java_lang_Thread::set_daemon(oop java_thread) { |
|
557 java_thread->bool_field_put(_daemon_offset, true); |
|
558 } |
|
559 |
|
560 oop java_lang_Thread::context_class_loader(oop java_thread) { |
|
561 return java_thread->obj_field(_contextClassLoader_offset); |
|
562 } |
|
563 |
|
564 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { |
|
565 return java_thread->obj_field(_inheritedAccessControlContext_offset); |
|
566 } |
|
567 |
|
568 |
|
569 jlong java_lang_Thread::stackSize(oop java_thread) { |
|
570 // The stackSize field is only present starting in 1.4 |
|
571 if (_stackSize_offset > 0) { |
|
572 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); |
|
573 return java_thread->long_field(_stackSize_offset); |
|
574 } else { |
|
575 return 0; |
|
576 } |
|
577 } |
|
578 |
|
579 // Write the thread status value to threadStatus field in java.lang.Thread java class. |
|
580 void java_lang_Thread::set_thread_status(oop java_thread, |
|
581 java_lang_Thread::ThreadStatus status) { |
|
582 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); |
|
583 // The threadStatus is only present starting in 1.5 |
|
584 if (_thread_status_offset > 0) { |
|
585 java_thread->int_field_put(_thread_status_offset, status); |
|
586 } |
|
587 } |
|
588 |
|
589 // Read thread status value from threadStatus field in java.lang.Thread java class. |
|
590 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { |
|
591 assert(Thread::current()->is_VM_thread() || |
|
592 JavaThread::current()->thread_state() == _thread_in_vm, |
|
593 "Java Thread is not running in vm"); |
|
594 // The threadStatus is only present starting in 1.5 |
|
595 if (_thread_status_offset > 0) { |
|
596 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
|
597 } else { |
|
598 // All we can easily figure out is if it is alive, but that is |
|
599 // enough info for a valid unknown status. |
|
600 // These aren't restricted to valid set ThreadStatus values, so |
|
601 // use JVMTI values and cast. |
|
602 JavaThread* thr = java_lang_Thread::thread(java_thread); |
|
603 if (thr == NULL) { |
|
604 // the thread hasn't run yet or is in the process of exiting |
|
605 return NEW; |
|
606 } |
|
607 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; |
|
608 } |
|
609 } |
|
610 |
|
611 |
|
612 jlong java_lang_Thread::thread_id(oop java_thread) { |
|
613 // The thread ID field is only present starting in 1.5 |
|
614 if (_tid_offset > 0) { |
|
615 return java_thread->long_field(_tid_offset); |
|
616 } else { |
|
617 return 0; |
|
618 } |
|
619 } |
|
620 |
|
621 oop java_lang_Thread::park_blocker(oop java_thread) { |
|
622 assert(JDK_Version::supports_thread_park_blocker() && _park_blocker_offset != 0, |
|
623 "Must support parkBlocker field"); |
|
624 |
|
625 if (_park_blocker_offset > 0) { |
|
626 return java_thread->obj_field(_park_blocker_offset); |
|
627 } |
|
628 |
|
629 return NULL; |
|
630 } |
|
631 |
|
632 jlong java_lang_Thread::park_event(oop java_thread) { |
|
633 if (_park_event_offset > 0) { |
|
634 return java_thread->long_field(_park_event_offset); |
|
635 } |
|
636 return 0; |
|
637 } |
|
638 |
|
639 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { |
|
640 if (_park_event_offset > 0) { |
|
641 java_thread->long_field_put(_park_event_offset, ptr); |
|
642 return true; |
|
643 } |
|
644 return false; |
|
645 } |
|
646 |
|
647 |
|
648 const char* java_lang_Thread::thread_status_name(oop java_thread) { |
|
649 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); |
|
650 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
|
651 switch (status) { |
|
652 case NEW : return "NEW"; |
|
653 case RUNNABLE : return "RUNNABLE"; |
|
654 case SLEEPING : return "TIMED_WAITING (sleeping)"; |
|
655 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; |
|
656 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; |
|
657 case PARKED : return "WAITING (parking)"; |
|
658 case PARKED_TIMED : return "TIMED_WAITING (parking)"; |
|
659 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; |
|
660 case TERMINATED : return "TERMINATED"; |
|
661 default : return "UNKNOWN"; |
|
662 }; |
|
663 } |
|
664 int java_lang_ThreadGroup::_parent_offset = 0; |
|
665 int java_lang_ThreadGroup::_name_offset = 0; |
|
666 int java_lang_ThreadGroup::_threads_offset = 0; |
|
667 int java_lang_ThreadGroup::_groups_offset = 0; |
|
668 int java_lang_ThreadGroup::_maxPriority_offset = 0; |
|
669 int java_lang_ThreadGroup::_destroyed_offset = 0; |
|
670 int java_lang_ThreadGroup::_daemon_offset = 0; |
|
671 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; |
|
672 int java_lang_ThreadGroup::_nthreads_offset = 0; |
|
673 int java_lang_ThreadGroup::_ngroups_offset = 0; |
|
674 |
|
675 oop java_lang_ThreadGroup::parent(oop java_thread_group) { |
|
676 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
677 return java_thread_group->obj_field(_parent_offset); |
|
678 } |
|
679 |
|
680 // ("name as oop" accessor is not necessary) |
|
681 |
|
682 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { |
|
683 oop name = java_thread_group->obj_field(_name_offset); |
|
684 // ThreadGroup.name can be null |
|
685 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); |
|
686 } |
|
687 |
|
688 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { |
|
689 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
690 return java_thread_group->int_field(_nthreads_offset); |
|
691 } |
|
692 |
|
693 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { |
|
694 oop threads = java_thread_group->obj_field(_threads_offset); |
|
695 assert(threads != NULL, "threadgroups should have threads"); |
|
696 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code |
|
697 return objArrayOop(threads); |
|
698 } |
|
699 |
|
700 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { |
|
701 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
702 return java_thread_group->int_field(_ngroups_offset); |
|
703 } |
|
704 |
|
705 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { |
|
706 oop groups = java_thread_group->obj_field(_groups_offset); |
|
707 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code |
|
708 return objArrayOop(groups); |
|
709 } |
|
710 |
|
711 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { |
|
712 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
713 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); |
|
714 } |
|
715 |
|
716 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { |
|
717 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
718 return java_thread_group->bool_field(_destroyed_offset) != 0; |
|
719 } |
|
720 |
|
721 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { |
|
722 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
723 return java_thread_group->bool_field(_daemon_offset) != 0; |
|
724 } |
|
725 |
|
726 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { |
|
727 assert(java_thread_group->is_oop(), "thread group must be oop"); |
|
728 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; |
|
729 } |
|
730 |
|
731 void java_lang_ThreadGroup::compute_offsets() { |
|
732 assert(_parent_offset == 0, "offsets should be initialized only once"); |
|
733 |
|
734 klassOop k = SystemDictionary::threadGroup_klass(); |
|
735 |
|
736 COMPUTE_OFFSET("java.lang.ThreadGroup", _parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); |
|
737 COMPUTE_OFFSET("java.lang.ThreadGroup", _name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
|
738 COMPUTE_OFFSET("java.lang.ThreadGroup", _threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); |
|
739 COMPUTE_OFFSET("java.lang.ThreadGroup", _groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); |
|
740 COMPUTE_OFFSET("java.lang.ThreadGroup", _maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); |
|
741 COMPUTE_OFFSET("java.lang.ThreadGroup", _destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); |
|
742 COMPUTE_OFFSET("java.lang.ThreadGroup", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
|
743 COMPUTE_OFFSET("java.lang.ThreadGroup", _vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); |
|
744 COMPUTE_OFFSET("java.lang.ThreadGroup", _nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); |
|
745 COMPUTE_OFFSET("java.lang.ThreadGroup", _ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); |
|
746 } |
|
747 |
|
748 oop java_lang_Throwable::backtrace(oop throwable) { |
|
749 return throwable->obj_field_acquire(backtrace_offset); |
|
750 } |
|
751 |
|
752 |
|
753 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { |
|
754 throwable->release_obj_field_put(backtrace_offset, value); |
|
755 } |
|
756 |
|
757 |
|
758 oop java_lang_Throwable::message(oop throwable) { |
|
759 return throwable->obj_field(detailMessage_offset); |
|
760 } |
|
761 |
|
762 |
|
763 oop java_lang_Throwable::message(Handle throwable) { |
|
764 return throwable->obj_field(detailMessage_offset); |
|
765 } |
|
766 |
|
767 |
|
768 void java_lang_Throwable::set_message(oop throwable, oop value) { |
|
769 throwable->obj_field_put(detailMessage_offset, value); |
|
770 } |
|
771 |
|
772 |
|
773 void java_lang_Throwable::clear_stacktrace(oop throwable) { |
|
774 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); |
|
775 throwable->obj_field_put(stackTrace_offset, NULL); |
|
776 } |
|
777 |
|
778 |
|
779 void java_lang_Throwable::print(oop throwable, outputStream* st) { |
|
780 ResourceMark rm; |
|
781 klassOop k = throwable->klass(); |
|
782 assert(k != NULL, "just checking"); |
|
783 st->print("%s", instanceKlass::cast(k)->external_name()); |
|
784 oop msg = message(throwable); |
|
785 if (msg != NULL) { |
|
786 st->print(": %s", java_lang_String::as_utf8_string(msg)); |
|
787 } |
|
788 } |
|
789 |
|
790 |
|
791 void java_lang_Throwable::print(Handle throwable, outputStream* st) { |
|
792 ResourceMark rm; |
|
793 klassOop k = throwable->klass(); |
|
794 assert(k != NULL, "just checking"); |
|
795 st->print("%s", instanceKlass::cast(k)->external_name()); |
|
796 oop msg = message(throwable); |
|
797 if (msg != NULL) { |
|
798 st->print(": %s", java_lang_String::as_utf8_string(msg)); |
|
799 } |
|
800 } |
|
801 |
|
802 // Print stack trace element to resource allocated buffer |
|
803 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { |
|
804 // Get strings and string lengths |
|
805 instanceKlass* klass = instanceKlass::cast(method->method_holder()); |
|
806 const char* klass_name = klass->external_name(); |
|
807 int buf_len = (int)strlen(klass_name); |
|
808 char* source_file_name; |
|
809 if (klass->source_file_name() == NULL) { |
|
810 source_file_name = NULL; |
|
811 } else { |
|
812 source_file_name = klass->source_file_name()->as_C_string(); |
|
813 buf_len += (int)strlen(source_file_name); |
|
814 } |
|
815 char* method_name = method->name()->as_C_string(); |
|
816 buf_len += (int)strlen(method_name); |
|
817 |
|
818 // Allocate temporary buffer with extra space for formatting and line number |
|
819 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); |
|
820 |
|
821 // Print stack trace line in buffer |
|
822 sprintf(buf, "\tat %s.%s", klass_name, method_name); |
|
823 if (method->is_native()) { |
|
824 strcat(buf, "(Native Method)"); |
|
825 } else { |
|
826 int line_number = method->line_number_from_bci(bci); |
|
827 if (source_file_name != NULL && (line_number != -1)) { |
|
828 // Sourcename and linenumber |
|
829 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); |
|
830 } else if (source_file_name != NULL) { |
|
831 // Just sourcename |
|
832 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); |
|
833 } else { |
|
834 // Neither soucename and linenumber |
|
835 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); |
|
836 } |
|
837 nmethod* nm = method->code(); |
|
838 if (WizardMode && nm != NULL) { |
|
839 sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm); |
|
840 } |
|
841 } |
|
842 |
|
843 return buf; |
|
844 } |
|
845 |
|
846 |
|
847 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { |
|
848 ResourceMark rm; |
|
849 char* buf = print_stack_element_to_buffer(method, bci); |
|
850 print_to_stream(stream, buf); |
|
851 } |
|
852 |
|
853 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { |
|
854 ResourceMark rm; |
|
855 char* buf = print_stack_element_to_buffer(method, bci); |
|
856 st->print_cr("%s", buf); |
|
857 } |
|
858 |
|
859 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { |
|
860 if (stream.is_null()) { |
|
861 tty->print_cr("%s", str); |
|
862 } else { |
|
863 EXCEPTION_MARK; |
|
864 JavaValue result(T_VOID); |
|
865 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); |
|
866 if (!HAS_PENDING_EXCEPTION) { |
|
867 JavaCalls::call_virtual(&result, |
|
868 stream, |
|
869 KlassHandle(THREAD, stream->klass()), |
|
870 vmSymbolHandles::println_name(), |
|
871 vmSymbolHandles::char_array_void_signature(), |
|
872 arg, |
|
873 THREAD); |
|
874 } |
|
875 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. |
|
876 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; |
|
877 } |
|
878 |
|
879 } |
|
880 |
|
881 |
|
882 const char* java_lang_Throwable::no_stack_trace_message() { |
|
883 return "\t<<no stack trace available>>"; |
|
884 } |
|
885 |
|
886 |
|
887 // Currently used only for exceptions occurring during startup |
|
888 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { |
|
889 Thread *THREAD = Thread::current(); |
|
890 Handle h_throwable(THREAD, throwable); |
|
891 while (h_throwable.not_null()) { |
|
892 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); |
|
893 if (result.is_null()) { |
|
894 st->print_cr(no_stack_trace_message()); |
|
895 return; |
|
896 } |
|
897 |
|
898 while (result.not_null()) { |
|
899 objArrayHandle methods (THREAD, |
|
900 objArrayOop(result->obj_at(trace_methods_offset))); |
|
901 typeArrayHandle bcis (THREAD, |
|
902 typeArrayOop(result->obj_at(trace_bcis_offset))); |
|
903 |
|
904 if (methods.is_null() || bcis.is_null()) { |
|
905 st->print_cr(no_stack_trace_message()); |
|
906 return; |
|
907 } |
|
908 |
|
909 int length = methods()->length(); |
|
910 for (int index = 0; index < length; index++) { |
|
911 methodOop method = methodOop(methods()->obj_at(index)); |
|
912 if (method == NULL) goto handle_cause; |
|
913 int bci = bcis->ushort_at(index); |
|
914 print_stack_element(st, method, bci); |
|
915 } |
|
916 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); |
|
917 } |
|
918 handle_cause: |
|
919 { |
|
920 EXCEPTION_MARK; |
|
921 JavaValue result(T_OBJECT); |
|
922 JavaCalls::call_virtual(&result, |
|
923 h_throwable, |
|
924 KlassHandle(THREAD, h_throwable->klass()), |
|
925 vmSymbolHandles::getCause_name(), |
|
926 vmSymbolHandles::void_throwable_signature(), |
|
927 THREAD); |
|
928 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. |
|
929 if (HAS_PENDING_EXCEPTION) { |
|
930 CLEAR_PENDING_EXCEPTION; |
|
931 h_throwable = Handle(); |
|
932 } else { |
|
933 h_throwable = Handle(THREAD, (oop) result.get_jobject()); |
|
934 if (h_throwable.not_null()) { |
|
935 st->print("Caused by: "); |
|
936 print(h_throwable, st); |
|
937 st->cr(); |
|
938 } |
|
939 } |
|
940 } |
|
941 } |
|
942 } |
|
943 |
|
944 |
|
945 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { |
|
946 // Note: this is no longer used in Merlin, but we support it for compatibility. |
|
947 Thread *thread = Thread::current(); |
|
948 Handle stream(thread, print_stream); |
|
949 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); |
|
950 if (result.is_null()) { |
|
951 print_to_stream(stream, no_stack_trace_message()); |
|
952 return; |
|
953 } |
|
954 |
|
955 while (result.not_null()) { |
|
956 objArrayHandle methods (thread, |
|
957 objArrayOop(result->obj_at(trace_methods_offset))); |
|
958 typeArrayHandle bcis (thread, |
|
959 typeArrayOop(result->obj_at(trace_bcis_offset))); |
|
960 |
|
961 if (methods.is_null() || bcis.is_null()) { |
|
962 print_to_stream(stream, no_stack_trace_message()); |
|
963 return; |
|
964 } |
|
965 |
|
966 int length = methods()->length(); |
|
967 for (int index = 0; index < length; index++) { |
|
968 methodOop method = methodOop(methods()->obj_at(index)); |
|
969 if (method == NULL) return; |
|
970 int bci = bcis->ushort_at(index); |
|
971 print_stack_element(stream, method, bci); |
|
972 } |
|
973 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); |
|
974 } |
|
975 } |
|
976 |
|
977 // This class provides a simple wrapper over the internal structure of |
|
978 // exception backtrace to insulate users of the backtrace from needing |
|
979 // to know what it looks like. |
|
980 class BacktraceBuilder: public StackObj { |
|
981 private: |
|
982 Handle _backtrace; |
|
983 objArrayOop _head; |
|
984 objArrayOop _methods; |
|
985 typeArrayOop _bcis; |
|
986 int _index; |
|
987 bool _dirty; |
|
988 bool _done; |
|
989 No_Safepoint_Verifier _nsv; |
|
990 |
|
991 public: |
|
992 |
|
993 enum { |
|
994 trace_methods_offset = java_lang_Throwable::trace_methods_offset, |
|
995 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, |
|
996 trace_next_offset = java_lang_Throwable::trace_next_offset, |
|
997 trace_size = java_lang_Throwable::trace_size, |
|
998 trace_chunk_size = java_lang_Throwable::trace_chunk_size |
|
999 }; |
|
1000 |
|
1001 // constructor for new backtrace |
|
1002 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) { |
|
1003 expand(CHECK); |
|
1004 _backtrace = _head; |
|
1005 _index = 0; |
|
1006 _dirty = false; |
|
1007 _done = false; |
|
1008 } |
|
1009 |
|
1010 void flush() { |
|
1011 if (_dirty && _methods != NULL) { |
|
1012 BarrierSet* bs = Universe::heap()->barrier_set(); |
|
1013 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
|
1014 bs->write_ref_array(MemRegion((HeapWord*)_methods->obj_at_addr(0), |
|
1015 _methods->length() * HeapWordsPerOop)); |
|
1016 _dirty = false; |
|
1017 } |
|
1018 } |
|
1019 |
|
1020 void expand(TRAPS) { |
|
1021 flush(); |
|
1022 |
|
1023 objArrayHandle old_head(THREAD, _head); |
|
1024 Pause_No_Safepoint_Verifier pnsv(&_nsv); |
|
1025 |
|
1026 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); |
|
1027 objArrayHandle new_head(THREAD, head); |
|
1028 |
|
1029 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); |
|
1030 objArrayHandle new_methods(THREAD, methods); |
|
1031 |
|
1032 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
|
1033 typeArrayHandle new_bcis(THREAD, bcis); |
|
1034 |
|
1035 if (!old_head.is_null()) { |
|
1036 old_head->obj_at_put(trace_next_offset, new_head()); |
|
1037 } |
|
1038 new_head->obj_at_put(trace_methods_offset, new_methods()); |
|
1039 new_head->obj_at_put(trace_bcis_offset, new_bcis()); |
|
1040 |
|
1041 _head = new_head(); |
|
1042 _methods = new_methods(); |
|
1043 _bcis = new_bcis(); |
|
1044 _index = 0; |
|
1045 } |
|
1046 |
|
1047 oop backtrace() { |
|
1048 flush(); |
|
1049 return _backtrace(); |
|
1050 } |
|
1051 |
|
1052 inline void push(methodOop method, short bci, TRAPS) { |
|
1053 if (_index >= trace_chunk_size) { |
|
1054 methodHandle mhandle(THREAD, method); |
|
1055 expand(CHECK); |
|
1056 method = mhandle(); |
|
1057 } |
|
1058 |
|
1059 // _methods->obj_at_put(_index, method); |
|
1060 *_methods->obj_at_addr(_index) = method; |
|
1061 _bcis->ushort_at_put(_index, bci); |
|
1062 _index++; |
|
1063 _dirty = true; |
|
1064 } |
|
1065 |
|
1066 methodOop current_method() { |
|
1067 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); |
|
1068 return methodOop(_methods->obj_at(_index)); |
|
1069 } |
|
1070 |
|
1071 jushort current_bci() { |
|
1072 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); |
|
1073 return _bcis->ushort_at(_index); |
|
1074 } |
|
1075 }; |
|
1076 |
|
1077 |
|
1078 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { |
|
1079 if (!StackTraceInThrowable) return; |
|
1080 ResourceMark rm(THREAD); |
|
1081 |
|
1082 // Start out by clearing the backtrace for this object, in case the VM |
|
1083 // runs out of memory while allocating the stack trace |
|
1084 set_backtrace(throwable(), NULL); |
|
1085 if (JDK_Version::is_gte_jdk14x_version()) { |
|
1086 // New since 1.4, clear lazily constructed Java level stacktrace if |
|
1087 // refilling occurs |
|
1088 clear_stacktrace(throwable()); |
|
1089 } |
|
1090 |
|
1091 int max_depth = MaxJavaStackTraceDepth; |
|
1092 JavaThread* thread = (JavaThread*)THREAD; |
|
1093 BacktraceBuilder bt(CHECK); |
|
1094 |
|
1095 // Instead of using vframe directly, this version of fill_in_stack_trace |
|
1096 // basically handles everything by hand. This significantly improved the |
|
1097 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. |
|
1098 // See bug 6333838 for more details. |
|
1099 // The "ASSERT" here is to verify this method generates the exactly same stack |
|
1100 // trace as utilizing vframe. |
|
1101 #ifdef ASSERT |
|
1102 vframeStream st(thread); |
|
1103 methodHandle st_method(THREAD, st.method()); |
|
1104 #endif |
|
1105 int total_count = 0; |
|
1106 RegisterMap map(thread, false); |
|
1107 int decode_offset = 0; |
|
1108 nmethod* nm = NULL; |
|
1109 bool skip_fillInStackTrace_check = false; |
|
1110 bool skip_throwableInit_check = false; |
|
1111 |
|
1112 for (frame fr = thread->last_frame(); max_depth != total_count;) { |
|
1113 methodOop method = NULL; |
|
1114 int bci = 0; |
|
1115 |
|
1116 // Compiled java method case. |
|
1117 if (decode_offset != 0) { |
|
1118 DebugInfoReadStream stream(nm, decode_offset); |
|
1119 decode_offset = stream.read_int(); |
|
1120 method = (methodOop)nm->oop_at(stream.read_int()); |
|
1121 bci = stream.read_bci(); |
|
1122 } else { |
|
1123 if (fr.is_first_frame()) break; |
|
1124 address pc = fr.pc(); |
|
1125 if (fr.is_interpreted_frame()) { |
|
1126 intptr_t bcx = fr.interpreter_frame_bcx(); |
|
1127 method = fr.interpreter_frame_method(); |
|
1128 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); |
|
1129 fr = fr.sender(&map); |
|
1130 } else { |
|
1131 CodeBlob* cb = fr.cb(); |
|
1132 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL |
|
1133 // but non nmethod |
|
1134 fr = fr.sender(&map); |
|
1135 if (cb == NULL || !cb->is_nmethod()) { |
|
1136 continue; |
|
1137 } |
|
1138 nm = (nmethod*)cb; |
|
1139 if (nm->method()->is_native()) { |
|
1140 method = nm->method(); |
|
1141 bci = 0; |
|
1142 } else { |
|
1143 PcDesc* pd = nm->pc_desc_at(pc); |
|
1144 decode_offset = pd->scope_decode_offset(); |
|
1145 // if decode_offset is not equal to 0, it will execute the |
|
1146 // "compiled java method case" at the beginning of the loop. |
|
1147 continue; |
|
1148 } |
|
1149 } |
|
1150 } |
|
1151 #ifdef ASSERT |
|
1152 assert(st_method() == method && st.bci() == bci, |
|
1153 "Wrong stack trace"); |
|
1154 st.next(); |
|
1155 // vframeStream::method isn't GC-safe so store off a copy |
|
1156 // of the methodOop in case we GC. |
|
1157 if (!st.at_end()) { |
|
1158 st_method = st.method(); |
|
1159 } |
|
1160 #endif |
|
1161 if (!skip_fillInStackTrace_check) { |
|
1162 // check "fillInStackTrace" only once, so we negate the flag |
|
1163 // after the first time check. |
|
1164 skip_fillInStackTrace_check = true; |
|
1165 if (method->name() == vmSymbols::fillInStackTrace_name()) { |
|
1166 continue; |
|
1167 } |
|
1168 } |
|
1169 // skip <init> methods of the exceptions klass. If there is <init> methods |
|
1170 // that belongs to a superclass of the exception we are going to skipping |
|
1171 // them in stack trace. This is simlar to classic VM. |
|
1172 if (!skip_throwableInit_check) { |
|
1173 if (method->name() == vmSymbols::object_initializer_name() && |
|
1174 throwable->is_a(method->method_holder())) { |
|
1175 continue; |
|
1176 } else { |
|
1177 // if no "Throwable.init()" method found, we stop checking it next time. |
|
1178 skip_throwableInit_check = true; |
|
1179 } |
|
1180 } |
|
1181 bt.push(method, bci, CHECK); |
|
1182 total_count++; |
|
1183 } |
|
1184 |
|
1185 // Put completed stack trace into throwable object |
|
1186 set_backtrace(throwable(), bt.backtrace()); |
|
1187 } |
|
1188 |
|
1189 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { |
|
1190 // No-op if stack trace is disabled |
|
1191 if (!StackTraceInThrowable) { |
|
1192 return; |
|
1193 } |
|
1194 |
|
1195 // Disable stack traces for some preallocated out of memory errors |
|
1196 if (!Universe::should_fill_in_stack_trace(throwable)) { |
|
1197 return; |
|
1198 } |
|
1199 |
|
1200 PRESERVE_EXCEPTION_MARK; |
|
1201 |
|
1202 JavaThread* thread = JavaThread::active(); |
|
1203 fill_in_stack_trace(throwable, thread); |
|
1204 // ignore exceptions thrown during stack trace filling |
|
1205 CLEAR_PENDING_EXCEPTION; |
|
1206 } |
|
1207 |
|
1208 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { |
|
1209 // Allocate stack trace - backtrace is created but not filled in |
|
1210 |
|
1211 // No-op if stack trace is disabled |
|
1212 if (!StackTraceInThrowable) return; |
|
1213 |
|
1214 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); |
|
1215 objArrayHandle backtrace (THREAD, h_oop); |
|
1216 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); |
|
1217 objArrayHandle methods (THREAD, m_oop); |
|
1218 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
|
1219 typeArrayHandle bcis(THREAD, b); |
|
1220 |
|
1221 // backtrace has space for one chunk (next is NULL) |
|
1222 backtrace->obj_at_put(trace_methods_offset, methods()); |
|
1223 backtrace->obj_at_put(trace_bcis_offset, bcis()); |
|
1224 set_backtrace(throwable(), backtrace()); |
|
1225 } |
|
1226 |
|
1227 |
|
1228 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { |
|
1229 // Fill in stack trace into preallocated backtrace (no GC) |
|
1230 |
|
1231 // No-op if stack trace is disabled |
|
1232 if (!StackTraceInThrowable) return; |
|
1233 |
|
1234 assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); |
|
1235 |
|
1236 oop backtrace = java_lang_Throwable::backtrace(throwable()); |
|
1237 assert(backtrace != NULL, "backtrace not preallocated"); |
|
1238 |
|
1239 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); |
|
1240 objArrayOop methods = objArrayOop(m); |
|
1241 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); |
|
1242 |
|
1243 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); |
|
1244 typeArrayOop bcis = typeArrayOop(b); |
|
1245 assert(bcis != NULL, "bci array not preallocated"); |
|
1246 |
|
1247 assert(methods->length() == bcis->length(), "method and bci arrays should match"); |
|
1248 |
|
1249 JavaThread* thread = JavaThread::current(); |
|
1250 ResourceMark rm(thread); |
|
1251 vframeStream st(thread); |
|
1252 |
|
1253 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init |
|
1254 // methods as preallocated errors aren't created by "java" code. |
|
1255 |
|
1256 // fill in as much stack trace as possible |
|
1257 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); |
|
1258 int chunk_count = 0; |
|
1259 |
|
1260 for (;!st.at_end(); st.next()) { |
|
1261 // add element |
|
1262 bcis->ushort_at_put(chunk_count, st.bci()); |
|
1263 methods->obj_at_put(chunk_count, st.method()); |
|
1264 |
|
1265 chunk_count++; |
|
1266 |
|
1267 // Bail-out for deep stacks |
|
1268 if (chunk_count >= max_chunks) break; |
|
1269 } |
|
1270 } |
|
1271 |
|
1272 |
|
1273 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { |
|
1274 if (throwable == NULL) { |
|
1275 THROW_0(vmSymbols::java_lang_NullPointerException()); |
|
1276 } |
|
1277 objArrayOop chunk = objArrayOop(backtrace(throwable)); |
|
1278 int depth = 0; |
|
1279 if (chunk != NULL) { |
|
1280 // Iterate over chunks and count full ones |
|
1281 while (true) { |
|
1282 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); |
|
1283 if (next == NULL) break; |
|
1284 depth += trace_chunk_size; |
|
1285 chunk = next; |
|
1286 } |
|
1287 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); |
|
1288 // Count element in remaining partial chunk |
|
1289 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); |
|
1290 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); |
|
1291 assert(methods != NULL && bcis != NULL, "sanity check"); |
|
1292 for (int i = 0; i < methods->length(); i++) { |
|
1293 if (methods->obj_at(i) == NULL) break; |
|
1294 depth++; |
|
1295 } |
|
1296 } |
|
1297 return depth; |
|
1298 } |
|
1299 |
|
1300 |
|
1301 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { |
|
1302 if (throwable == NULL) { |
|
1303 THROW_0(vmSymbols::java_lang_NullPointerException()); |
|
1304 } |
|
1305 if (index < 0) { |
|
1306 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
|
1307 } |
|
1308 // Compute how many chunks to skip and index into actual chunk |
|
1309 objArrayOop chunk = objArrayOop(backtrace(throwable)); |
|
1310 int skip_chunks = index / trace_chunk_size; |
|
1311 int chunk_index = index % trace_chunk_size; |
|
1312 while (chunk != NULL && skip_chunks > 0) { |
|
1313 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); |
|
1314 skip_chunks--; |
|
1315 } |
|
1316 if (chunk == NULL) { |
|
1317 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
|
1318 } |
|
1319 // Get method,bci from chunk |
|
1320 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); |
|
1321 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); |
|
1322 assert(methods != NULL && bcis != NULL, "sanity check"); |
|
1323 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); |
|
1324 int bci = bcis->ushort_at(chunk_index); |
|
1325 // Chunk can be partial full |
|
1326 if (method.is_null()) { |
|
1327 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
|
1328 } |
|
1329 |
|
1330 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); |
|
1331 return element; |
|
1332 } |
|
1333 |
|
1334 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { |
|
1335 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs |
|
1336 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); |
|
1337 |
|
1338 // Allocate java.lang.StackTraceElement instance |
|
1339 klassOop k = SystemDictionary::stackTraceElement_klass(); |
|
1340 instanceKlassHandle ik (THREAD, k); |
|
1341 if (ik->should_be_initialized()) { |
|
1342 ik->initialize(CHECK_0); |
|
1343 } |
|
1344 |
|
1345 Handle element = ik->allocate_instance_handle(CHECK_0); |
|
1346 // Fill in class name |
|
1347 ResourceMark rm(THREAD); |
|
1348 const char* str = instanceKlass::cast(method->method_holder())->external_name(); |
|
1349 oop classname = StringTable::intern((char*) str, CHECK_0); |
|
1350 java_lang_StackTraceElement::set_declaringClass(element(), classname); |
|
1351 // Fill in method name |
|
1352 oop methodname = StringTable::intern(method->name(), CHECK_0); |
|
1353 java_lang_StackTraceElement::set_methodName(element(), methodname); |
|
1354 // Fill in source file name |
|
1355 symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); |
|
1356 oop filename = StringTable::intern(source, CHECK_0); |
|
1357 java_lang_StackTraceElement::set_fileName(element(), filename); |
|
1358 // File in source line number |
|
1359 int line_number; |
|
1360 if (method->is_native()) { |
|
1361 // Negative value different from -1 below, enabling Java code in |
|
1362 // class java.lang.StackTraceElement to distinguish "native" from |
|
1363 // "no LineNumberTable". |
|
1364 line_number = -2; |
|
1365 } else { |
|
1366 // Returns -1 if no LineNumberTable, and otherwise actual line number |
|
1367 line_number = method->line_number_from_bci(bci); |
|
1368 } |
|
1369 java_lang_StackTraceElement::set_lineNumber(element(), line_number); |
|
1370 |
|
1371 return element(); |
|
1372 } |
|
1373 |
|
1374 |
|
1375 void java_lang_reflect_AccessibleObject::compute_offsets() { |
|
1376 klassOop k = SystemDictionary::reflect_accessible_object_klass(); |
|
1377 COMPUTE_OFFSET("java.lang.reflect.AccessibleObject", override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); |
|
1378 } |
|
1379 |
|
1380 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { |
|
1381 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1382 return (jboolean) reflect->bool_field(override_offset); |
|
1383 } |
|
1384 |
|
1385 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { |
|
1386 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1387 reflect->bool_field_put(override_offset, (int) value); |
|
1388 } |
|
1389 |
|
1390 void java_lang_reflect_Method::compute_offsets() { |
|
1391 klassOop k = SystemDictionary::reflect_method_klass(); |
|
1392 COMPUTE_OFFSET("java.lang.reflect.Method", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
|
1393 COMPUTE_OFFSET("java.lang.reflect.Method", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
|
1394 COMPUTE_OFFSET("java.lang.reflect.Method", returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); |
|
1395 COMPUTE_OFFSET("java.lang.reflect.Method", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
|
1396 COMPUTE_OFFSET("java.lang.reflect.Method", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
|
1397 COMPUTE_OFFSET("java.lang.reflect.Method", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
|
1398 COMPUTE_OFFSET("java.lang.reflect.Method", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
|
1399 // The generic signature and annotations fields are only present in 1.5 |
|
1400 signature_offset = -1; |
|
1401 annotations_offset = -1; |
|
1402 parameter_annotations_offset = -1; |
|
1403 annotation_default_offset = -1; |
|
1404 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
|
1405 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
|
1406 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
|
1407 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); |
|
1408 } |
|
1409 |
|
1410 Handle java_lang_reflect_Method::create(TRAPS) { |
|
1411 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1412 klassOop klass = SystemDictionary::reflect_method_klass(); |
|
1413 // This class is eagerly initialized during VM initialization, since we keep a refence |
|
1414 // to one of the methods |
|
1415 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); |
|
1416 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); |
|
1417 } |
|
1418 |
|
1419 oop java_lang_reflect_Method::clazz(oop reflect) { |
|
1420 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1421 return reflect->obj_field(clazz_offset); |
|
1422 } |
|
1423 |
|
1424 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { |
|
1425 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1426 reflect->obj_field_put(clazz_offset, value); |
|
1427 } |
|
1428 |
|
1429 int java_lang_reflect_Method::slot(oop reflect) { |
|
1430 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1431 return reflect->int_field(slot_offset); |
|
1432 } |
|
1433 |
|
1434 void java_lang_reflect_Method::set_slot(oop reflect, int value) { |
|
1435 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1436 reflect->int_field_put(slot_offset, value); |
|
1437 } |
|
1438 |
|
1439 oop java_lang_reflect_Method::name(oop method) { |
|
1440 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1441 return method->obj_field(name_offset); |
|
1442 } |
|
1443 |
|
1444 void java_lang_reflect_Method::set_name(oop method, oop value) { |
|
1445 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1446 method->obj_field_put(name_offset, value); |
|
1447 } |
|
1448 |
|
1449 oop java_lang_reflect_Method::return_type(oop method) { |
|
1450 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1451 return method->obj_field(returnType_offset); |
|
1452 } |
|
1453 |
|
1454 void java_lang_reflect_Method::set_return_type(oop method, oop value) { |
|
1455 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1456 method->obj_field_put(returnType_offset, value); |
|
1457 } |
|
1458 |
|
1459 oop java_lang_reflect_Method::parameter_types(oop method) { |
|
1460 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1461 return method->obj_field(parameterTypes_offset); |
|
1462 } |
|
1463 |
|
1464 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { |
|
1465 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1466 method->obj_field_put(parameterTypes_offset, value); |
|
1467 } |
|
1468 |
|
1469 oop java_lang_reflect_Method::exception_types(oop method) { |
|
1470 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1471 return method->obj_field(exceptionTypes_offset); |
|
1472 } |
|
1473 |
|
1474 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { |
|
1475 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1476 method->obj_field_put(exceptionTypes_offset, value); |
|
1477 } |
|
1478 |
|
1479 int java_lang_reflect_Method::modifiers(oop method) { |
|
1480 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1481 return method->int_field(modifiers_offset); |
|
1482 } |
|
1483 |
|
1484 void java_lang_reflect_Method::set_modifiers(oop method, int value) { |
|
1485 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1486 method->int_field_put(modifiers_offset, value); |
|
1487 } |
|
1488 |
|
1489 bool java_lang_reflect_Method::has_signature_field() { |
|
1490 return (signature_offset >= 0); |
|
1491 } |
|
1492 |
|
1493 oop java_lang_reflect_Method::signature(oop method) { |
|
1494 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1495 assert(has_signature_field(), "signature field must be present"); |
|
1496 return method->obj_field(signature_offset); |
|
1497 } |
|
1498 |
|
1499 void java_lang_reflect_Method::set_signature(oop method, oop value) { |
|
1500 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1501 assert(has_signature_field(), "signature field must be present"); |
|
1502 method->obj_field_put(signature_offset, value); |
|
1503 } |
|
1504 |
|
1505 bool java_lang_reflect_Method::has_annotations_field() { |
|
1506 return (annotations_offset >= 0); |
|
1507 } |
|
1508 |
|
1509 oop java_lang_reflect_Method::annotations(oop method) { |
|
1510 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1511 assert(has_annotations_field(), "annotations field must be present"); |
|
1512 return method->obj_field(annotations_offset); |
|
1513 } |
|
1514 |
|
1515 void java_lang_reflect_Method::set_annotations(oop method, oop value) { |
|
1516 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1517 assert(has_annotations_field(), "annotations field must be present"); |
|
1518 method->obj_field_put(annotations_offset, value); |
|
1519 } |
|
1520 |
|
1521 bool java_lang_reflect_Method::has_parameter_annotations_field() { |
|
1522 return (parameter_annotations_offset >= 0); |
|
1523 } |
|
1524 |
|
1525 oop java_lang_reflect_Method::parameter_annotations(oop method) { |
|
1526 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1527 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
|
1528 return method->obj_field(parameter_annotations_offset); |
|
1529 } |
|
1530 |
|
1531 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { |
|
1532 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1533 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
|
1534 method->obj_field_put(parameter_annotations_offset, value); |
|
1535 } |
|
1536 |
|
1537 bool java_lang_reflect_Method::has_annotation_default_field() { |
|
1538 return (annotation_default_offset >= 0); |
|
1539 } |
|
1540 |
|
1541 oop java_lang_reflect_Method::annotation_default(oop method) { |
|
1542 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1543 assert(has_annotation_default_field(), "annotation default field must be present"); |
|
1544 return method->obj_field(annotation_default_offset); |
|
1545 } |
|
1546 |
|
1547 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { |
|
1548 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1549 assert(has_annotation_default_field(), "annotation default field must be present"); |
|
1550 method->obj_field_put(annotation_default_offset, value); |
|
1551 } |
|
1552 |
|
1553 void java_lang_reflect_Constructor::compute_offsets() { |
|
1554 klassOop k = SystemDictionary::reflect_constructor_klass(); |
|
1555 COMPUTE_OFFSET("java.lang.reflect.Constructor", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
|
1556 COMPUTE_OFFSET("java.lang.reflect.Constructor", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
|
1557 COMPUTE_OFFSET("java.lang.reflect.Constructor", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
|
1558 COMPUTE_OFFSET("java.lang.reflect.Constructor", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
|
1559 COMPUTE_OFFSET("java.lang.reflect.Constructor", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
|
1560 // The generic signature and annotations fields are only present in 1.5 |
|
1561 signature_offset = -1; |
|
1562 annotations_offset = -1; |
|
1563 parameter_annotations_offset = -1; |
|
1564 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
|
1565 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
|
1566 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
|
1567 } |
|
1568 |
|
1569 Handle java_lang_reflect_Constructor::create(TRAPS) { |
|
1570 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1571 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); |
|
1572 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
|
1573 instanceKlassHandle klass (THREAD, k); |
|
1574 // Ensure it is initialized |
|
1575 klass->initialize(CHECK_NH); |
|
1576 return klass->allocate_instance_handle(CHECK_NH); |
|
1577 } |
|
1578 |
|
1579 oop java_lang_reflect_Constructor::clazz(oop reflect) { |
|
1580 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1581 return reflect->obj_field(clazz_offset); |
|
1582 } |
|
1583 |
|
1584 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { |
|
1585 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1586 reflect->obj_field_put(clazz_offset, value); |
|
1587 } |
|
1588 |
|
1589 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { |
|
1590 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1591 return constructor->obj_field(parameterTypes_offset); |
|
1592 } |
|
1593 |
|
1594 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { |
|
1595 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1596 constructor->obj_field_put(parameterTypes_offset, value); |
|
1597 } |
|
1598 |
|
1599 oop java_lang_reflect_Constructor::exception_types(oop constructor) { |
|
1600 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1601 return constructor->obj_field(exceptionTypes_offset); |
|
1602 } |
|
1603 |
|
1604 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { |
|
1605 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1606 constructor->obj_field_put(exceptionTypes_offset, value); |
|
1607 } |
|
1608 |
|
1609 int java_lang_reflect_Constructor::slot(oop reflect) { |
|
1610 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1611 return reflect->int_field(slot_offset); |
|
1612 } |
|
1613 |
|
1614 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { |
|
1615 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1616 reflect->int_field_put(slot_offset, value); |
|
1617 } |
|
1618 |
|
1619 int java_lang_reflect_Constructor::modifiers(oop constructor) { |
|
1620 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1621 return constructor->int_field(modifiers_offset); |
|
1622 } |
|
1623 |
|
1624 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { |
|
1625 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1626 constructor->int_field_put(modifiers_offset, value); |
|
1627 } |
|
1628 |
|
1629 bool java_lang_reflect_Constructor::has_signature_field() { |
|
1630 return (signature_offset >= 0); |
|
1631 } |
|
1632 |
|
1633 oop java_lang_reflect_Constructor::signature(oop constructor) { |
|
1634 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1635 assert(has_signature_field(), "signature field must be present"); |
|
1636 return constructor->obj_field(signature_offset); |
|
1637 } |
|
1638 |
|
1639 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { |
|
1640 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1641 assert(has_signature_field(), "signature field must be present"); |
|
1642 constructor->obj_field_put(signature_offset, value); |
|
1643 } |
|
1644 |
|
1645 bool java_lang_reflect_Constructor::has_annotations_field() { |
|
1646 return (annotations_offset >= 0); |
|
1647 } |
|
1648 |
|
1649 oop java_lang_reflect_Constructor::annotations(oop constructor) { |
|
1650 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1651 assert(has_annotations_field(), "annotations field must be present"); |
|
1652 return constructor->obj_field(annotations_offset); |
|
1653 } |
|
1654 |
|
1655 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { |
|
1656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1657 assert(has_annotations_field(), "annotations field must be present"); |
|
1658 constructor->obj_field_put(annotations_offset, value); |
|
1659 } |
|
1660 |
|
1661 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { |
|
1662 return (parameter_annotations_offset >= 0); |
|
1663 } |
|
1664 |
|
1665 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { |
|
1666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1667 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
|
1668 return method->obj_field(parameter_annotations_offset); |
|
1669 } |
|
1670 |
|
1671 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { |
|
1672 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1673 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
|
1674 method->obj_field_put(parameter_annotations_offset, value); |
|
1675 } |
|
1676 |
|
1677 void java_lang_reflect_Field::compute_offsets() { |
|
1678 klassOop k = SystemDictionary::reflect_field_klass(); |
|
1679 COMPUTE_OFFSET("java.lang.reflect.Field", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
|
1680 COMPUTE_OFFSET("java.lang.reflect.Field", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
|
1681 COMPUTE_OFFSET("java.lang.reflect.Field", type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); |
|
1682 COMPUTE_OFFSET("java.lang.reflect.Field", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
|
1683 COMPUTE_OFFSET("java.lang.reflect.Field", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
|
1684 // The generic signature and annotations fields are only present in 1.5 |
|
1685 signature_offset = -1; |
|
1686 annotations_offset = -1; |
|
1687 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
|
1688 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
|
1689 } |
|
1690 |
|
1691 Handle java_lang_reflect_Field::create(TRAPS) { |
|
1692 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1693 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); |
|
1694 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
|
1695 instanceKlassHandle klass (THREAD, k); |
|
1696 // Ensure it is initialized |
|
1697 klass->initialize(CHECK_NH); |
|
1698 return klass->allocate_instance_handle(CHECK_NH); |
|
1699 } |
|
1700 |
|
1701 oop java_lang_reflect_Field::clazz(oop reflect) { |
|
1702 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1703 return reflect->obj_field(clazz_offset); |
|
1704 } |
|
1705 |
|
1706 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { |
|
1707 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1708 reflect->obj_field_put(clazz_offset, value); |
|
1709 } |
|
1710 |
|
1711 oop java_lang_reflect_Field::name(oop field) { |
|
1712 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1713 return field->obj_field(name_offset); |
|
1714 } |
|
1715 |
|
1716 void java_lang_reflect_Field::set_name(oop field, oop value) { |
|
1717 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1718 field->obj_field_put(name_offset, value); |
|
1719 } |
|
1720 |
|
1721 oop java_lang_reflect_Field::type(oop field) { |
|
1722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1723 return field->obj_field(type_offset); |
|
1724 } |
|
1725 |
|
1726 void java_lang_reflect_Field::set_type(oop field, oop value) { |
|
1727 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1728 field->obj_field_put(type_offset, value); |
|
1729 } |
|
1730 |
|
1731 int java_lang_reflect_Field::slot(oop reflect) { |
|
1732 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1733 return reflect->int_field(slot_offset); |
|
1734 } |
|
1735 |
|
1736 void java_lang_reflect_Field::set_slot(oop reflect, int value) { |
|
1737 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1738 reflect->int_field_put(slot_offset, value); |
|
1739 } |
|
1740 |
|
1741 int java_lang_reflect_Field::modifiers(oop field) { |
|
1742 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1743 return field->int_field(modifiers_offset); |
|
1744 } |
|
1745 |
|
1746 void java_lang_reflect_Field::set_modifiers(oop field, int value) { |
|
1747 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1748 field->int_field_put(modifiers_offset, value); |
|
1749 } |
|
1750 |
|
1751 bool java_lang_reflect_Field::has_signature_field() { |
|
1752 return (signature_offset >= 0); |
|
1753 } |
|
1754 |
|
1755 oop java_lang_reflect_Field::signature(oop field) { |
|
1756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1757 assert(has_signature_field(), "signature field must be present"); |
|
1758 return field->obj_field(signature_offset); |
|
1759 } |
|
1760 |
|
1761 void java_lang_reflect_Field::set_signature(oop field, oop value) { |
|
1762 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1763 assert(has_signature_field(), "signature field must be present"); |
|
1764 field->obj_field_put(signature_offset, value); |
|
1765 } |
|
1766 |
|
1767 bool java_lang_reflect_Field::has_annotations_field() { |
|
1768 return (annotations_offset >= 0); |
|
1769 } |
|
1770 |
|
1771 oop java_lang_reflect_Field::annotations(oop field) { |
|
1772 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1773 assert(has_annotations_field(), "annotations field must be present"); |
|
1774 return field->obj_field(annotations_offset); |
|
1775 } |
|
1776 |
|
1777 void java_lang_reflect_Field::set_annotations(oop field, oop value) { |
|
1778 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1779 assert(has_annotations_field(), "annotations field must be present"); |
|
1780 field->obj_field_put(annotations_offset, value); |
|
1781 } |
|
1782 |
|
1783 |
|
1784 void sun_reflect_ConstantPool::compute_offsets() { |
|
1785 klassOop k = SystemDictionary::reflect_constant_pool_klass(); |
|
1786 // This null test can be removed post beta |
|
1787 if (k != NULL) { |
|
1788 COMPUTE_OFFSET("sun.reflect.ConstantPool", _cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); |
|
1789 } |
|
1790 } |
|
1791 |
|
1792 |
|
1793 Handle sun_reflect_ConstantPool::create(TRAPS) { |
|
1794 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1795 klassOop k = SystemDictionary::reflect_constant_pool_klass(); |
|
1796 instanceKlassHandle klass (THREAD, k); |
|
1797 // Ensure it is initialized |
|
1798 klass->initialize(CHECK_NH); |
|
1799 return klass->allocate_instance_handle(CHECK_NH); |
|
1800 } |
|
1801 |
|
1802 |
|
1803 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { |
|
1804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1805 return reflect->obj_field(_cp_oop_offset); |
|
1806 } |
|
1807 |
|
1808 |
|
1809 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { |
|
1810 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
|
1811 reflect->obj_field_put(_cp_oop_offset, value); |
|
1812 } |
|
1813 |
|
1814 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { |
|
1815 klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); |
|
1816 // This null test can be removed post beta |
|
1817 if (k != NULL) { |
|
1818 COMPUTE_OFFSET("sun.reflect.UnsafeStaticFieldAccessorImpl", _base_offset, k, |
|
1819 vmSymbols::base_name(), vmSymbols::object_signature()); |
|
1820 } |
|
1821 } |
|
1822 |
|
1823 oop java_lang_boxing_object::initialize_and_allocate(klassOop k, TRAPS) { |
|
1824 instanceKlassHandle h (THREAD, k); |
|
1825 if (!h->is_initialized()) h->initialize(CHECK_0); |
|
1826 return h->allocate_instance(THREAD); |
|
1827 } |
|
1828 |
|
1829 |
|
1830 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { |
|
1831 oop box; |
|
1832 switch (type) { |
|
1833 case T_BOOLEAN: |
|
1834 box = initialize_and_allocate(SystemDictionary::boolean_klass(), CHECK_0); |
|
1835 box->bool_field_put(value_offset, value->z); |
|
1836 break; |
|
1837 case T_CHAR: |
|
1838 box = initialize_and_allocate(SystemDictionary::char_klass(), CHECK_0); |
|
1839 box->char_field_put(value_offset, value->c); |
|
1840 break; |
|
1841 case T_FLOAT: |
|
1842 box = initialize_and_allocate(SystemDictionary::float_klass(), CHECK_0); |
|
1843 box->float_field_put(value_offset, value->f); |
|
1844 break; |
|
1845 case T_DOUBLE: |
|
1846 box = initialize_and_allocate(SystemDictionary::double_klass(), CHECK_0); |
|
1847 box->double_field_put(value_offset, value->d); |
|
1848 break; |
|
1849 case T_BYTE: |
|
1850 box = initialize_and_allocate(SystemDictionary::byte_klass(), CHECK_0); |
|
1851 box->byte_field_put(value_offset, value->b); |
|
1852 break; |
|
1853 case T_SHORT: |
|
1854 box = initialize_and_allocate(SystemDictionary::short_klass(), CHECK_0); |
|
1855 box->short_field_put(value_offset, value->s); |
|
1856 break; |
|
1857 case T_INT: |
|
1858 box = initialize_and_allocate(SystemDictionary::int_klass(), CHECK_0); |
|
1859 box->int_field_put(value_offset, value->i); |
|
1860 break; |
|
1861 case T_LONG: |
|
1862 box = initialize_and_allocate(SystemDictionary::long_klass(), CHECK_0); |
|
1863 box->long_field_put(value_offset, value->j); |
|
1864 break; |
|
1865 default: |
|
1866 return NULL; |
|
1867 } |
|
1868 return box; |
|
1869 } |
|
1870 |
|
1871 |
|
1872 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { |
|
1873 klassOop k = box->klass(); |
|
1874 if (k == SystemDictionary::boolean_klass()) { |
|
1875 value->z = box->bool_field(value_offset); |
|
1876 return T_BOOLEAN; |
|
1877 } |
|
1878 if (k == SystemDictionary::char_klass()) { |
|
1879 value->c = box->char_field(value_offset); |
|
1880 return T_CHAR; |
|
1881 } |
|
1882 if (k == SystemDictionary::float_klass()) { |
|
1883 value->f = box->float_field(value_offset); |
|
1884 return T_FLOAT; |
|
1885 } |
|
1886 if (k == SystemDictionary::double_klass()) { |
|
1887 value->d = box->double_field(value_offset); |
|
1888 return T_DOUBLE; |
|
1889 } |
|
1890 if (k == SystemDictionary::byte_klass()) { |
|
1891 value->b = box->byte_field(value_offset); |
|
1892 return T_BYTE; |
|
1893 } |
|
1894 if (k == SystemDictionary::short_klass()) { |
|
1895 value->s = box->short_field(value_offset); |
|
1896 return T_SHORT; |
|
1897 } |
|
1898 if (k == SystemDictionary::int_klass()) { |
|
1899 value->i = box->int_field(value_offset); |
|
1900 return T_INT; |
|
1901 } |
|
1902 if (k == SystemDictionary::long_klass()) { |
|
1903 value->j = box->long_field(value_offset); |
|
1904 return T_LONG; |
|
1905 } |
|
1906 return T_ILLEGAL; |
|
1907 } |
|
1908 |
|
1909 |
|
1910 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { |
|
1911 klassOop k = box->klass(); |
|
1912 if (k == SystemDictionary::boolean_klass()) { |
|
1913 box->bool_field_put(value_offset, value->z); |
|
1914 return T_BOOLEAN; |
|
1915 } |
|
1916 if (k == SystemDictionary::char_klass()) { |
|
1917 box->char_field_put(value_offset, value->c); |
|
1918 return T_CHAR; |
|
1919 } |
|
1920 if (k == SystemDictionary::float_klass()) { |
|
1921 box->float_field_put(value_offset, value->f); |
|
1922 return T_FLOAT; |
|
1923 } |
|
1924 if (k == SystemDictionary::double_klass()) { |
|
1925 box->double_field_put(value_offset, value->d); |
|
1926 return T_DOUBLE; |
|
1927 } |
|
1928 if (k == SystemDictionary::byte_klass()) { |
|
1929 box->byte_field_put(value_offset, value->b); |
|
1930 return T_BYTE; |
|
1931 } |
|
1932 if (k == SystemDictionary::short_klass()) { |
|
1933 box->short_field_put(value_offset, value->s); |
|
1934 return T_SHORT; |
|
1935 } |
|
1936 if (k == SystemDictionary::int_klass()) { |
|
1937 box->int_field_put(value_offset, value->i); |
|
1938 return T_INT; |
|
1939 } |
|
1940 if (k == SystemDictionary::long_klass()) { |
|
1941 box->long_field_put(value_offset, value->j); |
|
1942 return T_LONG; |
|
1943 } |
|
1944 return T_ILLEGAL; |
|
1945 } |
|
1946 |
|
1947 |
|
1948 // Support for java_lang_ref_Reference |
|
1949 |
|
1950 void java_lang_ref_Reference::set_referent(oop ref, oop value) { |
|
1951 ref->obj_field_put(referent_offset, value); |
|
1952 } |
|
1953 |
|
1954 oop* java_lang_ref_Reference::referent_addr(oop ref) { |
|
1955 return ref->obj_field_addr(referent_offset); |
|
1956 } |
|
1957 |
|
1958 void java_lang_ref_Reference::set_next(oop ref, oop value) { |
|
1959 ref->obj_field_put(next_offset, value); |
|
1960 } |
|
1961 |
|
1962 oop* java_lang_ref_Reference::next_addr(oop ref) { |
|
1963 return ref->obj_field_addr(next_offset); |
|
1964 } |
|
1965 |
|
1966 void java_lang_ref_Reference::set_discovered(oop ref, oop value) { |
|
1967 ref->obj_field_put(discovered_offset, value); |
|
1968 } |
|
1969 |
|
1970 oop* java_lang_ref_Reference::discovered_addr(oop ref) { |
|
1971 return ref->obj_field_addr(discovered_offset); |
|
1972 } |
|
1973 |
|
1974 oop* java_lang_ref_Reference::pending_list_lock_addr() { |
|
1975 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
|
1976 return (oop*)(((char *)ik->start_of_static_fields()) + static_lock_offset); |
|
1977 } |
|
1978 |
|
1979 oop* java_lang_ref_Reference::pending_list_addr() { |
|
1980 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
|
1981 return (oop *)(((char *)ik->start_of_static_fields()) + static_pending_offset); |
|
1982 } |
|
1983 |
|
1984 |
|
1985 // Support for java_lang_ref_SoftReference |
|
1986 |
|
1987 jlong java_lang_ref_SoftReference::timestamp(oop ref) { |
|
1988 return ref->long_field(timestamp_offset); |
|
1989 } |
|
1990 |
|
1991 jlong java_lang_ref_SoftReference::clock() { |
|
1992 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); |
|
1993 int offset = ik->offset_of_static_fields() + static_clock_offset; |
|
1994 |
|
1995 return SystemDictionary::soft_reference_klass()->long_field(offset); |
|
1996 } |
|
1997 |
|
1998 void java_lang_ref_SoftReference::set_clock(jlong value) { |
|
1999 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); |
|
2000 int offset = ik->offset_of_static_fields() + static_clock_offset; |
|
2001 |
|
2002 SystemDictionary::soft_reference_klass()->long_field_put(offset, value); |
|
2003 } |
|
2004 |
|
2005 |
|
2006 // Support for java_security_AccessControlContext |
|
2007 |
|
2008 int java_security_AccessControlContext::_context_offset = 0; |
|
2009 int java_security_AccessControlContext::_privilegedContext_offset = 0; |
|
2010 int java_security_AccessControlContext::_isPrivileged_offset = 0; |
|
2011 |
|
2012 |
|
2013 void java_security_AccessControlContext::compute_offsets() { |
|
2014 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); |
|
2015 fieldDescriptor fd; |
|
2016 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); |
|
2017 |
|
2018 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { |
|
2019 fatal("Invalid layout of java.security.AccessControlContext"); |
|
2020 } |
|
2021 _context_offset = fd.offset(); |
|
2022 |
|
2023 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { |
|
2024 fatal("Invalid layout of java.security.AccessControlContext"); |
|
2025 } |
|
2026 _privilegedContext_offset = fd.offset(); |
|
2027 |
|
2028 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { |
|
2029 fatal("Invalid layout of java.security.AccessControlContext"); |
|
2030 } |
|
2031 _isPrivileged_offset = fd.offset(); |
|
2032 } |
|
2033 |
|
2034 |
|
2035 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { |
|
2036 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); |
|
2037 // Ensure klass is initialized |
|
2038 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); |
|
2039 // Allocate result |
|
2040 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); |
|
2041 // Fill in values |
|
2042 result->obj_field_put(_context_offset, context()); |
|
2043 result->obj_field_put(_privilegedContext_offset, privileged_context()); |
|
2044 result->bool_field_put(_isPrivileged_offset, isPrivileged); |
|
2045 return result; |
|
2046 } |
|
2047 |
|
2048 |
|
2049 // Support for java_lang_ClassLoader |
|
2050 |
|
2051 oop java_lang_ClassLoader::parent(oop loader) { |
|
2052 assert(loader->is_oop(), "loader must be oop"); |
|
2053 return loader->obj_field(parent_offset); |
|
2054 } |
|
2055 |
|
2056 |
|
2057 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { |
|
2058 // Fix for 4474172; see evaluation for more details |
|
2059 loader = non_reflection_class_loader(loader); |
|
2060 |
|
2061 oop cl = SystemDictionary::java_system_loader(); |
|
2062 while(cl != NULL) { |
|
2063 if (cl == loader) return true; |
|
2064 cl = parent(cl); |
|
2065 } |
|
2066 return false; |
|
2067 } |
|
2068 |
|
2069 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { |
|
2070 if (loader != NULL) { |
|
2071 // See whether this is one of the class loaders associated with |
|
2072 // the generated bytecodes for reflection, and if so, "magically" |
|
2073 // delegate to its parent to prevent class loading from occurring |
|
2074 // in places where applications using reflection didn't expect it. |
|
2075 klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); |
|
2076 // This might be null in non-1.4 JDKs |
|
2077 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { |
|
2078 return parent(loader); |
|
2079 } |
|
2080 } |
|
2081 return loader; |
|
2082 } |
|
2083 |
|
2084 |
|
2085 // Support for java_lang_System |
|
2086 |
|
2087 void java_lang_System::compute_offsets() { |
|
2088 assert(offset_of_static_fields == 0, "offsets should be initialized only once"); |
|
2089 |
|
2090 instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); |
|
2091 offset_of_static_fields = ik->offset_of_static_fields(); |
|
2092 } |
|
2093 |
|
2094 int java_lang_System::in_offset_in_bytes() { |
|
2095 return (offset_of_static_fields + static_in_offset); |
|
2096 } |
|
2097 |
|
2098 |
|
2099 int java_lang_System::out_offset_in_bytes() { |
|
2100 return (offset_of_static_fields + static_out_offset); |
|
2101 } |
|
2102 |
|
2103 |
|
2104 int java_lang_System::err_offset_in_bytes() { |
|
2105 return (offset_of_static_fields + static_err_offset); |
|
2106 } |
|
2107 |
|
2108 |
|
2109 |
|
2110 int java_lang_String::value_offset; |
|
2111 int java_lang_String::offset_offset; |
|
2112 int java_lang_String::count_offset; |
|
2113 int java_lang_String::hash_offset; |
|
2114 int java_lang_Class::klass_offset; |
|
2115 int java_lang_Class::array_klass_offset; |
|
2116 int java_lang_Class::resolved_constructor_offset; |
|
2117 int java_lang_Class::number_of_fake_oop_fields; |
|
2118 int java_lang_Throwable::backtrace_offset; |
|
2119 int java_lang_Throwable::detailMessage_offset; |
|
2120 int java_lang_Throwable::cause_offset; |
|
2121 int java_lang_Throwable::stackTrace_offset; |
|
2122 int java_lang_reflect_AccessibleObject::override_offset; |
|
2123 int java_lang_reflect_Method::clazz_offset; |
|
2124 int java_lang_reflect_Method::name_offset; |
|
2125 int java_lang_reflect_Method::returnType_offset; |
|
2126 int java_lang_reflect_Method::parameterTypes_offset; |
|
2127 int java_lang_reflect_Method::exceptionTypes_offset; |
|
2128 int java_lang_reflect_Method::slot_offset; |
|
2129 int java_lang_reflect_Method::modifiers_offset; |
|
2130 int java_lang_reflect_Method::signature_offset; |
|
2131 int java_lang_reflect_Method::annotations_offset; |
|
2132 int java_lang_reflect_Method::parameter_annotations_offset; |
|
2133 int java_lang_reflect_Method::annotation_default_offset; |
|
2134 int java_lang_reflect_Constructor::clazz_offset; |
|
2135 int java_lang_reflect_Constructor::parameterTypes_offset; |
|
2136 int java_lang_reflect_Constructor::exceptionTypes_offset; |
|
2137 int java_lang_reflect_Constructor::slot_offset; |
|
2138 int java_lang_reflect_Constructor::modifiers_offset; |
|
2139 int java_lang_reflect_Constructor::signature_offset; |
|
2140 int java_lang_reflect_Constructor::annotations_offset; |
|
2141 int java_lang_reflect_Constructor::parameter_annotations_offset; |
|
2142 int java_lang_reflect_Field::clazz_offset; |
|
2143 int java_lang_reflect_Field::name_offset; |
|
2144 int java_lang_reflect_Field::type_offset; |
|
2145 int java_lang_reflect_Field::slot_offset; |
|
2146 int java_lang_reflect_Field::modifiers_offset; |
|
2147 int java_lang_reflect_Field::signature_offset; |
|
2148 int java_lang_reflect_Field::annotations_offset; |
|
2149 int java_lang_boxing_object::value_offset; |
|
2150 int java_lang_ref_Reference::referent_offset; |
|
2151 int java_lang_ref_Reference::queue_offset; |
|
2152 int java_lang_ref_Reference::next_offset; |
|
2153 int java_lang_ref_Reference::discovered_offset; |
|
2154 int java_lang_ref_Reference::static_lock_offset; |
|
2155 int java_lang_ref_Reference::static_pending_offset; |
|
2156 int java_lang_ref_Reference::number_of_fake_oop_fields; |
|
2157 int java_lang_ref_SoftReference::timestamp_offset; |
|
2158 int java_lang_ref_SoftReference::static_clock_offset; |
|
2159 int java_lang_ClassLoader::parent_offset; |
|
2160 int java_lang_System::offset_of_static_fields; |
|
2161 int java_lang_System::static_in_offset; |
|
2162 int java_lang_System::static_out_offset; |
|
2163 int java_lang_System::static_err_offset; |
|
2164 int java_lang_StackTraceElement::declaringClass_offset; |
|
2165 int java_lang_StackTraceElement::methodName_offset; |
|
2166 int java_lang_StackTraceElement::fileName_offset; |
|
2167 int java_lang_StackTraceElement::lineNumber_offset; |
|
2168 int java_lang_AssertionStatusDirectives::classes_offset; |
|
2169 int java_lang_AssertionStatusDirectives::classEnabled_offset; |
|
2170 int java_lang_AssertionStatusDirectives::packages_offset; |
|
2171 int java_lang_AssertionStatusDirectives::packageEnabled_offset; |
|
2172 int java_lang_AssertionStatusDirectives::deflt_offset; |
|
2173 int java_nio_Buffer::_limit_offset; |
|
2174 int sun_misc_AtomicLongCSImpl::_value_offset; |
|
2175 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; |
|
2176 int sun_reflect_ConstantPool::_cp_oop_offset; |
|
2177 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; |
|
2178 |
|
2179 |
|
2180 // Support for java_lang_StackTraceElement |
|
2181 |
|
2182 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { |
|
2183 element->obj_field_put(fileName_offset, value); |
|
2184 } |
|
2185 |
|
2186 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { |
|
2187 element->obj_field_put(declaringClass_offset, value); |
|
2188 } |
|
2189 |
|
2190 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { |
|
2191 element->obj_field_put(methodName_offset, value); |
|
2192 } |
|
2193 |
|
2194 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { |
|
2195 element->int_field_put(lineNumber_offset, value); |
|
2196 } |
|
2197 |
|
2198 |
|
2199 // Support for java Assertions - java_lang_AssertionStatusDirectives. |
|
2200 |
|
2201 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { |
|
2202 o->obj_field_put(classes_offset, val); |
|
2203 } |
|
2204 |
|
2205 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { |
|
2206 o->obj_field_put(classEnabled_offset, val); |
|
2207 } |
|
2208 |
|
2209 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { |
|
2210 o->obj_field_put(packages_offset, val); |
|
2211 } |
|
2212 |
|
2213 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { |
|
2214 o->obj_field_put(packageEnabled_offset, val); |
|
2215 } |
|
2216 |
|
2217 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { |
|
2218 o->bool_field_put(deflt_offset, val); |
|
2219 } |
|
2220 |
|
2221 |
|
2222 // Support for intrinsification of java.nio.Buffer.checkIndex |
|
2223 int java_nio_Buffer::limit_offset() { |
|
2224 return _limit_offset; |
|
2225 } |
|
2226 |
|
2227 |
|
2228 void java_nio_Buffer::compute_offsets() { |
|
2229 klassOop k = SystemDictionary::java_nio_Buffer_klass(); |
|
2230 COMPUTE_OFFSET("java.nio.Buffer", _limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); |
|
2231 } |
|
2232 |
|
2233 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate |
|
2234 int sun_misc_AtomicLongCSImpl::value_offset() { |
|
2235 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); |
|
2236 return _value_offset; |
|
2237 } |
|
2238 |
|
2239 |
|
2240 void sun_misc_AtomicLongCSImpl::compute_offsets() { |
|
2241 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); |
|
2242 // If this class is not present, its value field offset won't be referenced. |
|
2243 if (k != NULL) { |
|
2244 COMPUTE_OFFSET("sun.misc.AtomicLongCSImpl", _value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); |
|
2245 } |
|
2246 } |
|
2247 |
|
2248 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { |
|
2249 if (_owner_offset != 0) return; |
|
2250 |
|
2251 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); |
|
2252 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); |
|
2253 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); |
|
2254 COMPUTE_OFFSET("java.util.concurrent.locks.AbstractOwnableSynchronizer", _owner_offset, k, |
|
2255 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); |
|
2256 } |
|
2257 |
|
2258 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { |
|
2259 assert(_owner_offset != 0, "Must be initialized"); |
|
2260 return obj->obj_field(_owner_offset); |
|
2261 } |
|
2262 |
|
2263 // Compute hard-coded offsets |
|
2264 // Invoked before SystemDictionary::initialize, so pre-loaded classes |
|
2265 // are not available to determine the offset_of_static_fields. |
|
2266 void JavaClasses::compute_hard_coded_offsets() { |
|
2267 const int x = wordSize; |
|
2268 const int header = instanceOopDesc::header_size_in_bytes(); |
|
2269 |
|
2270 // Do the String Class |
|
2271 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; |
|
2272 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; |
|
2273 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); |
|
2274 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); |
|
2275 |
|
2276 // Do the Class Class |
|
2277 java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; |
|
2278 java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; |
|
2279 java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; |
|
2280 |
|
2281 // This is NOT an offset |
|
2282 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; |
|
2283 |
|
2284 // Throwable Class |
|
2285 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; |
|
2286 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; |
|
2287 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; |
|
2288 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; |
|
2289 |
|
2290 // java_lang_boxing_object |
|
2291 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset * x + header; |
|
2292 |
|
2293 // java_lang_ref_Reference: |
|
2294 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; |
|
2295 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; |
|
2296 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; |
|
2297 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; |
|
2298 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; |
|
2299 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; |
|
2300 // Artificial fields for java_lang_ref_Reference |
|
2301 // The first field is for the discovered field added in 1.4 |
|
2302 java_lang_ref_Reference::number_of_fake_oop_fields = 1; |
|
2303 |
|
2304 // java_lang_ref_SoftReference Class |
|
2305 java_lang_ref_SoftReference::timestamp_offset = java_lang_ref_SoftReference::hc_timestamp_offset * x + header; |
|
2306 // Don't multiply static fields because they are always in wordSize units |
|
2307 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; |
|
2308 |
|
2309 // java_lang_ClassLoader |
|
2310 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; |
|
2311 |
|
2312 // java_lang_System |
|
2313 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; |
|
2314 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; |
|
2315 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; |
|
2316 |
|
2317 // java_lang_StackTraceElement |
|
2318 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; |
|
2319 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; |
|
2320 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; |
|
2321 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; |
|
2322 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; |
|
2323 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; |
|
2324 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; |
|
2325 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; |
|
2326 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; |
|
2327 |
|
2328 } |
|
2329 |
|
2330 |
|
2331 // Compute non-hard-coded field offsets of all the classes in this file |
|
2332 void JavaClasses::compute_offsets() { |
|
2333 |
|
2334 java_lang_Class::compute_offsets(); |
|
2335 java_lang_System::compute_offsets(); |
|
2336 java_lang_Thread::compute_offsets(); |
|
2337 java_lang_ThreadGroup::compute_offsets(); |
|
2338 java_security_AccessControlContext::compute_offsets(); |
|
2339 // Initialize reflection classes. The layouts of these classes |
|
2340 // changed with the new reflection implementation in JDK 1.4, and |
|
2341 // since the Universe doesn't know what JDK version it is until this |
|
2342 // point we defer computation of these offsets until now. |
|
2343 java_lang_reflect_AccessibleObject::compute_offsets(); |
|
2344 java_lang_reflect_Method::compute_offsets(); |
|
2345 java_lang_reflect_Constructor::compute_offsets(); |
|
2346 java_lang_reflect_Field::compute_offsets(); |
|
2347 if (JDK_Version::is_gte_jdk14x_version()) { |
|
2348 java_nio_Buffer::compute_offsets(); |
|
2349 } |
|
2350 if (JDK_Version::is_gte_jdk15x_version()) { |
|
2351 sun_reflect_ConstantPool::compute_offsets(); |
|
2352 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); |
|
2353 } |
|
2354 sun_misc_AtomicLongCSImpl::compute_offsets(); |
|
2355 } |
|
2356 |
|
2357 #ifndef PRODUCT |
|
2358 |
|
2359 // These functions exist to assert the validity of hard-coded field offsets to guard |
|
2360 // against changes in the class files |
|
2361 |
|
2362 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
|
2363 EXCEPTION_MARK; |
|
2364 fieldDescriptor fd; |
|
2365 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
|
2366 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
|
2367 instanceKlassHandle h_klass (THREAD, k); |
|
2368 //instanceKlassHandle h_klass(klass); |
|
2369 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
|
2370 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
|
2371 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
|
2372 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); |
|
2373 return false; |
|
2374 } |
|
2375 if (fd.is_static()) { |
|
2376 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); |
|
2377 return false; |
|
2378 } |
|
2379 if (fd.offset() == hardcoded_offset ) { |
|
2380 return true; |
|
2381 } else { |
|
2382 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", |
|
2383 klass_name, field_name, hardcoded_offset, fd.offset()); |
|
2384 return false; |
|
2385 } |
|
2386 } |
|
2387 |
|
2388 |
|
2389 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
|
2390 EXCEPTION_MARK; |
|
2391 fieldDescriptor fd; |
|
2392 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
|
2393 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
|
2394 instanceKlassHandle h_klass (THREAD, k); |
|
2395 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
|
2396 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
|
2397 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
|
2398 tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
|
2399 return false; |
|
2400 } |
|
2401 if (!fd.is_static()) { |
|
2402 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); |
|
2403 return false; |
|
2404 } |
|
2405 if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { |
|
2406 return true; |
|
2407 } else { |
|
2408 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - h_klass->offset_of_static_fields()); |
|
2409 return false; |
|
2410 } |
|
2411 } |
|
2412 |
|
2413 |
|
2414 // Check the hard-coded field offsets of all the classes in this file |
|
2415 |
|
2416 void JavaClasses::check_offsets() { |
|
2417 bool valid = true; |
|
2418 |
|
2419 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
|
2420 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) |
|
2421 |
|
2422 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
|
2423 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) |
|
2424 |
|
2425 // java.lang.String |
|
2426 |
|
2427 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); |
|
2428 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); |
|
2429 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); |
|
2430 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); |
|
2431 |
|
2432 // java.lang.Class |
|
2433 |
|
2434 // Fake fields |
|
2435 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked |
|
2436 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked |
|
2437 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked |
|
2438 |
|
2439 // java.lang.Throwable |
|
2440 |
|
2441 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); |
|
2442 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); |
|
2443 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); |
|
2444 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); |
|
2445 |
|
2446 // Boxed primitive objects (java_lang_boxing_object) |
|
2447 |
|
2448 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); |
|
2449 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); |
|
2450 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); |
|
2451 CHECK_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); |
|
2452 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); |
|
2453 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); |
|
2454 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); |
|
2455 CHECK_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); |
|
2456 |
|
2457 // java.lang.ClassLoader |
|
2458 |
|
2459 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); |
|
2460 |
|
2461 // java.lang.System |
|
2462 |
|
2463 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); |
|
2464 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); |
|
2465 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); |
|
2466 |
|
2467 // java.lang.StackTraceElement |
|
2468 |
|
2469 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); |
|
2470 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); |
|
2471 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); |
|
2472 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); |
|
2473 |
|
2474 // java.lang.ref.Reference |
|
2475 |
|
2476 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); |
|
2477 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); |
|
2478 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); |
|
2479 // Fake field |
|
2480 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); |
|
2481 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); |
|
2482 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); |
|
2483 |
|
2484 // java.lang.ref.SoftReference |
|
2485 |
|
2486 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); |
|
2487 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); |
|
2488 |
|
2489 // java.lang.AssertionStatusDirectives |
|
2490 // |
|
2491 // The CheckAssertionStatusDirectives boolean can be removed from here and |
|
2492 // globals.hpp after the AssertionStatusDirectives class has been integrated |
|
2493 // into merlin "for some time." Without it, the vm will fail with early |
|
2494 // merlin builds. |
|
2495 |
|
2496 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { |
|
2497 const char* nm = "java/lang/AssertionStatusDirectives"; |
|
2498 const char* sig = "[Ljava/lang/String;"; |
|
2499 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); |
|
2500 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); |
|
2501 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); |
|
2502 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); |
|
2503 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); |
|
2504 } |
|
2505 |
|
2506 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); |
|
2507 } |
|
2508 |
|
2509 #endif // PRODUCT |
|
2510 |
|
2511 void javaClasses_init() { |
|
2512 JavaClasses::compute_offsets(); |
|
2513 JavaClasses::check_offsets(); |
|
2514 FilteredFieldsMap::initialize(); // must be done after computing offsets. |
|
2515 } |