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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/_jvm.cpp.incl"
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27 #include <errno.h>
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28
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29 /*
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30 NOTE about use of any ctor or function call that can trigger a safepoint/GC:
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31 such ctors and calls MUST NOT come between an oop declaration/init and its
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32 usage because if objects are move this may cause various memory stomps, bus
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33 errors and segfaults. Here is a cookbook for causing so called "naked oop
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34 failures":
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35
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36 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> {
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37 JVMWrapper("JVM_GetClassDeclaredFields");
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38
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39 // Object address to be held directly in mirror & not visible to GC
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40 oop mirror = JNIHandles::resolve_non_null(ofClass);
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41
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42 // If this ctor can hit a safepoint, moving objects around, then
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43 ComplexConstructor foo;
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44
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45 // Boom! mirror may point to JUNK instead of the intended object
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46 (some dereference of mirror)
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47
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48 // Here's another call that may block for GC, making mirror stale
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49 MutexLocker ml(some_lock);
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50
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51 // And here's an initializer that can result in a stale oop
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52 // all in one step.
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53 oop o = call_that_can_throw_exception(TRAPS);
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54
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55
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56 The solution is to keep the oop declaration BELOW the ctor or function
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57 call that might cause a GC, do another resolve to reassign the oop, or
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58 consider use of a Handle instead of an oop so there is immunity from object
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59 motion. But note that the "QUICK" entries below do not have a handlemark
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60 and thus can only support use of handles passed in.
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61 */
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62
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63 static void trace_class_resolution_impl(klassOop to_class, TRAPS) {
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64 ResourceMark rm;
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65 int line_number = -1;
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66 const char * source_file = NULL;
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67 klassOop caller = NULL;
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68 JavaThread* jthread = JavaThread::current();
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69 if (jthread->has_last_Java_frame()) {
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70 vframeStream vfst(jthread);
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71
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72 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames
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73 symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK);
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74 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK);
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75 symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK);
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76 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK);
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77
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78 methodOop last_caller = NULL;
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79
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80 while (!vfst.at_end()) {
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81 methodOop m = vfst.method();
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82 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::classloader_klass())&&
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83 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) &&
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84 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) {
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85 break;
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86 }
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87 last_caller = m;
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88 vfst.next();
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89 }
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90 // if this is called from Class.forName0 and that is called from Class.forName,
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91 // then print the caller of Class.forName. If this is Class.loadClass, then print
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92 // that caller, otherwise keep quiet since this should be picked up elsewhere.
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93 bool found_it = false;
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94 if (!vfst.at_end() &&
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95 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() &&
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96 vfst.method()->name() == vmSymbols::forName0_name()) {
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97 vfst.next();
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98 if (!vfst.at_end() &&
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99 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() &&
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100 vfst.method()->name() == vmSymbols::forName_name()) {
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101 vfst.next();
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102 found_it = true;
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103 }
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104 } else if (last_caller != NULL &&
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105 instanceKlass::cast(last_caller->method_holder())->name() ==
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106 vmSymbols::java_lang_ClassLoader() &&
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107 (last_caller->name() == vmSymbols::loadClassInternal_name() ||
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108 last_caller->name() == vmSymbols::loadClass_name())) {
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109 found_it = true;
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110 }
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111 if (found_it && !vfst.at_end()) {
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112 // found the caller
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113 caller = vfst.method()->method_holder();
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114 line_number = vfst.method()->line_number_from_bci(vfst.bci());
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115 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name();
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116 if (s != NULL) {
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117 source_file = s->as_C_string();
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118 }
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119 }
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120 }
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121 if (caller != NULL) {
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122 if (to_class != caller) {
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123 const char * from = Klass::cast(caller)->external_name();
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124 const char * to = Klass::cast(to_class)->external_name();
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125 // print in a single call to reduce interleaving between threads
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126 if (source_file != NULL) {
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127 tty->print("RESOLVE %s %s %s:%d (explicit)\n", from, to, source_file, line_number);
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128 } else {
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129 tty->print("RESOLVE %s %s (explicit)\n", from, to);
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130 }
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131 }
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132 }
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133 }
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134
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135 static void trace_class_resolution(klassOop to_class) {
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136 EXCEPTION_MARK;
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137 trace_class_resolution_impl(to_class, THREAD);
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138 if (HAS_PENDING_EXCEPTION) {
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139 CLEAR_PENDING_EXCEPTION;
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140 }
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141 }
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142
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143 // Wrapper to trace JVM functions
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144
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145 #ifdef ASSERT
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146 class JVMTraceWrapper : public StackObj {
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147 public:
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148 JVMTraceWrapper(const char* format, ...) {
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149 if (TraceJVMCalls) {
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150 va_list ap;
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151 va_start(ap, format);
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152 tty->print("JVM ");
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153 tty->vprint_cr(format, ap);
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154 va_end(ap);
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155 }
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156 }
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157 };
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158
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159 Histogram* JVMHistogram;
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160 volatile jint JVMHistogram_lock = 0;
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161
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162 class JVMHistogramElement : public HistogramElement {
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163 public:
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164 JVMHistogramElement(const char* name);
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165 };
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166
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167 JVMHistogramElement::JVMHistogramElement(const char* elementName) {
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168 _name = elementName;
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169 uintx count = 0;
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170
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171 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) {
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172 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) {
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173 count +=1;
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174 if ( (WarnOnStalledSpinLock > 0)
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175 && (count % WarnOnStalledSpinLock == 0)) {
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176 warning("JVMHistogram_lock seems to be stalled");
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177 }
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178 }
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179 }
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180
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181 if(JVMHistogram == NULL)
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182 JVMHistogram = new Histogram("JVM Call Counts",100);
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183
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184 JVMHistogram->add_element(this);
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185 Atomic::dec(&JVMHistogram_lock);
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186 }
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187
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188 #define JVMCountWrapper(arg) \
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189 static JVMHistogramElement* e = new JVMHistogramElement(arg); \
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190 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen!
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191
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192 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1)
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193 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2)
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194 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3)
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195 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4)
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196 #else
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197 #define JVMWrapper(arg1)
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198 #define JVMWrapper2(arg1, arg2)
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199 #define JVMWrapper3(arg1, arg2, arg3)
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200 #define JVMWrapper4(arg1, arg2, arg3, arg4)
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201 #endif
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202
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203
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204 // Interface version /////////////////////////////////////////////////////////////////////
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205
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206
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207 JVM_LEAF(jint, JVM_GetInterfaceVersion())
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208 return JVM_INTERFACE_VERSION;
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209 JVM_END
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210
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211
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212 // java.lang.System //////////////////////////////////////////////////////////////////////
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213
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214
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215 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored))
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216 JVMWrapper("JVM_CurrentTimeMillis");
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217 return os::javaTimeMillis();
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218 JVM_END
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219
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220 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored))
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221 JVMWrapper("JVM_NanoTime");
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222 return os::javaTimeNanos();
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223 JVM_END
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224
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225
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226 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
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227 jobject dst, jint dst_pos, jint length))
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228 JVMWrapper("JVM_ArrayCopy");
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229 // Check if we have null pointers
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230 if (src == NULL || dst == NULL) {
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231 THROW(vmSymbols::java_lang_NullPointerException());
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232 }
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233 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src));
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234 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst));
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235 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop");
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236 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop");
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237 // Do copy
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238 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread);
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239 JVM_END
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240
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241
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242 static void set_property(Handle props, const char* key, const char* value, TRAPS) {
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243 JavaValue r(T_OBJECT);
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244 // public synchronized Object put(Object key, Object value);
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245 HandleMark hm(THREAD);
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246 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK);
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247 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK);
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248 JavaCalls::call_virtual(&r,
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249 props,
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250 KlassHandle(THREAD, SystemDictionary::properties_klass()),
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251 vmSymbolHandles::put_name(),
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252 vmSymbolHandles::object_object_object_signature(),
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253 key_str,
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254 value_str,
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255 THREAD);
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256 }
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257
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258
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259 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties));
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260
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261
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262 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties))
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263 JVMWrapper("JVM_InitProperties");
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264 ResourceMark rm;
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265
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266 Handle props(THREAD, JNIHandles::resolve_non_null(properties));
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267
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268 // System property list includes both user set via -D option and
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269 // jvm system specific properties.
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270 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
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271 PUTPROP(props, p->key(), p->value());
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272 }
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273
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274 // Convert the -XX:MaxDirectMemorySize= command line flag
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275 // to the sun.nio.MaxDirectMemorySize property.
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276 // Do this after setting user properties to prevent people
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277 // from setting the value with a -D option, as requested.
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278 {
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279 char as_chars[256];
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280 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize);
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281 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
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282 }
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283
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284 // JVM monitoring and management support
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285 // Add the sun.management.compiler property for the compiler's name
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286 {
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287 #undef CSIZE
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288 #if defined(_LP64) || defined(_WIN64)
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289 #define CSIZE "64-Bit "
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290 #else
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291 #define CSIZE
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292 #endif // 64bit
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293
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294 #ifdef TIERED
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295 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers";
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296 #else
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297 #if defined(COMPILER1)
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298 const char* compiler_name = "HotSpot " CSIZE "Client Compiler";
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299 #elif defined(COMPILER2)
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300 const char* compiler_name = "HotSpot " CSIZE "Server Compiler";
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301 #else
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302 const char* compiler_name = "";
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303 #endif // compilers
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304 #endif // TIERED
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305
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306 if (*compiler_name != '\0' &&
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307 (Arguments::mode() != Arguments::_int)) {
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308 PUTPROP(props, "sun.management.compiler", compiler_name);
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309 }
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310 }
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311
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312 return properties;
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313 JVM_END
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314
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315
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316 // java.lang.Runtime /////////////////////////////////////////////////////////////////////////
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317
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318 extern volatile jint vm_created;
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319
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320 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code))
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321 if (vm_created != 0 && (code == 0)) {
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322 // The VM is about to exit. We call back into Java to check whether finalizers should be run
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323 Universe::run_finalizers_on_exit();
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324 }
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325 before_exit(thread);
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326 vm_exit(code);
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327 JVM_END
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328
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329
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330 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code))
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331 before_exit(thread);
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332 vm_exit(code);
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333 JVM_END
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334
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335
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336 JVM_LEAF(void, JVM_OnExit(void (*func)(void)))
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337 register_on_exit_function(func);
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338 JVM_END
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339
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340
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341 JVM_ENTRY_NO_ENV(void, JVM_GC(void))
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342 JVMWrapper("JVM_GC");
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343 if (!DisableExplicitGC) {
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344 Universe::heap()->collect(GCCause::_java_lang_system_gc);
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345 }
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346 JVM_END
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347
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348
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349 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void))
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350 JVMWrapper("JVM_MaxObjectInspectionAge");
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351 return Universe::heap()->millis_since_last_gc();
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352 JVM_END
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353
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354
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355 JVM_LEAF(void, JVM_TraceInstructions(jboolean on))
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356 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported");
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357 JVM_END
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358
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359
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360 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on))
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361 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported");
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362 JVM_END
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363
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364 static inline jlong convert_size_t_to_jlong(size_t val) {
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365 // In the 64-bit vm, a size_t can overflow a jlong (which is signed).
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366 NOT_LP64 (return (jlong)val;)
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367 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);)
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368 }
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369
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370 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void))
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371 JVMWrapper("JVM_TotalMemory");
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372 size_t n = Universe::heap()->capacity();
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373 return convert_size_t_to_jlong(n);
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374 JVM_END
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375
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376
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377 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void))
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378 JVMWrapper("JVM_FreeMemory");
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379 CollectedHeap* ch = Universe::heap();
|
|
|
380 size_t n = ch->capacity() - ch->used();
|
|
|
381 return convert_size_t_to_jlong(n);
|
|
|
382 JVM_END
|
|
|
383
|
|
|
384
|
|
|
385 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void))
|
|
|
386 JVMWrapper("JVM_MaxMemory");
|
|
|
387 size_t n = Universe::heap()->max_capacity();
|
|
|
388 return convert_size_t_to_jlong(n);
|
|
|
389 JVM_END
|
|
|
390
|
|
|
391
|
|
|
392 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void))
|
|
|
393 JVMWrapper("JVM_ActiveProcessorCount");
|
|
|
394 return os::active_processor_count();
|
|
|
395 JVM_END
|
|
|
396
|
|
|
397
|
|
|
398
|
|
|
399 // java.lang.Throwable //////////////////////////////////////////////////////
|
|
|
400
|
|
|
401
|
|
|
402 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
|
|
|
403 JVMWrapper("JVM_FillInStackTrace");
|
|
|
404 Handle exception(thread, JNIHandles::resolve_non_null(receiver));
|
|
|
405 java_lang_Throwable::fill_in_stack_trace(exception);
|
|
|
406 JVM_END
|
|
|
407
|
|
|
408
|
|
|
409 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable))
|
|
|
410 JVMWrapper("JVM_PrintStackTrace");
|
|
|
411 // Note: This is no longer used in Merlin, but we still support it for compatibility.
|
|
|
412 oop exception = JNIHandles::resolve_non_null(receiver);
|
|
|
413 oop stream = JNIHandles::resolve_non_null(printable);
|
|
|
414 java_lang_Throwable::print_stack_trace(exception, stream);
|
|
|
415 JVM_END
|
|
|
416
|
|
|
417
|
|
|
418 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable))
|
|
|
419 JVMWrapper("JVM_GetStackTraceDepth");
|
|
|
420 oop exception = JNIHandles::resolve(throwable);
|
|
|
421 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD);
|
|
|
422 JVM_END
|
|
|
423
|
|
|
424
|
|
|
425 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index))
|
|
|
426 JVMWrapper("JVM_GetStackTraceElement");
|
|
|
427 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC
|
|
|
428 oop exception = JNIHandles::resolve(throwable);
|
|
|
429 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL);
|
|
|
430 return JNIHandles::make_local(env, element);
|
|
|
431 JVM_END
|
|
|
432
|
|
|
433
|
|
|
434 // java.lang.Object ///////////////////////////////////////////////
|
|
|
435
|
|
|
436
|
|
|
437 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle))
|
|
|
438 JVMWrapper("JVM_IHashCode");
|
|
|
439 // as implemented in the classic virtual machine; return 0 if object is NULL
|
|
|
440 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ;
|
|
|
441 JVM_END
|
|
|
442
|
|
|
443
|
|
|
444 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms))
|
|
|
445 JVMWrapper("JVM_MonitorWait");
|
|
|
446 Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
|
|
|
447 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object");
|
|
|
448 JavaThreadInObjectWaitState jtiows(thread, ms != 0);
|
|
|
449 if (JvmtiExport::should_post_monitor_wait()) {
|
|
|
450 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms);
|
|
|
451 }
|
|
|
452 ObjectSynchronizer::wait(obj, ms, CHECK);
|
|
|
453 JVM_END
|
|
|
454
|
|
|
455
|
|
|
456 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle))
|
|
|
457 JVMWrapper("JVM_MonitorNotify");
|
|
|
458 Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
|
|
|
459 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object");
|
|
|
460 ObjectSynchronizer::notify(obj, CHECK);
|
|
|
461 JVM_END
|
|
|
462
|
|
|
463
|
|
|
464 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle))
|
|
|
465 JVMWrapper("JVM_MonitorNotifyAll");
|
|
|
466 Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
|
|
|
467 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object");
|
|
|
468 ObjectSynchronizer::notifyall(obj, CHECK);
|
|
|
469 JVM_END
|
|
|
470
|
|
|
471
|
|
|
472 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle))
|
|
|
473 JVMWrapper("JVM_Clone");
|
|
|
474 Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
|
|
|
475 const KlassHandle klass (THREAD, obj->klass());
|
|
|
476 JvmtiVMObjectAllocEventCollector oam;
|
|
|
477
|
|
|
478 #ifdef ASSERT
|
|
|
479 // Just checking that the cloneable flag is set correct
|
|
|
480 if (obj->is_javaArray()) {
|
|
|
481 guarantee(klass->is_cloneable(), "all arrays are cloneable");
|
|
|
482 } else {
|
|
|
483 guarantee(obj->is_instance(), "should be instanceOop");
|
|
|
484 bool cloneable = klass->is_subtype_of(SystemDictionary::cloneable_klass());
|
|
|
485 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag");
|
|
|
486 }
|
|
|
487 #endif
|
|
|
488
|
|
|
489 // Check if class of obj supports the Cloneable interface.
|
|
|
490 // All arrays are considered to be cloneable (See JLS 20.1.5)
|
|
|
491 if (!klass->is_cloneable()) {
|
|
|
492 ResourceMark rm(THREAD);
|
|
|
493 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name());
|
|
|
494 }
|
|
|
495
|
|
|
496 // Make shallow object copy
|
|
|
497 const int size = obj->size();
|
|
|
498 oop new_obj = NULL;
|
|
|
499 if (obj->is_javaArray()) {
|
|
|
500 const int length = ((arrayOop)obj())->length();
|
|
|
501 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL);
|
|
|
502 } else {
|
|
|
503 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL);
|
|
|
504 }
|
|
|
505 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread
|
|
|
506 // is modifying a reference field in the clonee, a non-oop-atomic copy might
|
|
|
507 // be suspended in the middle of copying the pointer and end up with parts
|
|
|
508 // of two different pointers in the field. Subsequent dereferences will crash.
|
|
|
509 // 4846409: an oop-copy of objects with long or double fields or arrays of same
|
|
|
510 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead
|
|
|
511 // of oops. We know objects are aligned on a minimum of an jlong boundary.
|
|
|
512 // The same is true of StubRoutines::object_copy and the various oop_copy
|
|
|
513 // variants, and of the code generated by the inline_native_clone intrinsic.
|
|
|
514 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned");
|
|
|
515 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj,
|
|
|
516 (size_t)align_object_size(size) / HeapWordsPerLong);
|
|
|
517 // Clear the header
|
|
|
518 new_obj->init_mark();
|
|
|
519
|
|
|
520 // Store check (mark entire object and let gc sort it out)
|
|
|
521 BarrierSet* bs = Universe::heap()->barrier_set();
|
|
|
522 assert(bs->has_write_region_opt(), "Barrier set does not have write_region");
|
|
|
523 bs->write_region(MemRegion((HeapWord*)new_obj, size));
|
|
|
524
|
|
|
525 // Caution: this involves a java upcall, so the clone should be
|
|
|
526 // "gc-robust" by this stage.
|
|
|
527 if (klass->has_finalizer()) {
|
|
|
528 assert(obj->is_instance(), "should be instanceOop");
|
|
|
529 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL);
|
|
|
530 }
|
|
|
531
|
|
|
532 return JNIHandles::make_local(env, oop(new_obj));
|
|
|
533 JVM_END
|
|
|
534
|
|
|
535 // java.lang.Compiler ////////////////////////////////////////////////////
|
|
|
536
|
|
|
537 // The initial cuts of the HotSpot VM will not support JITs, and all existing
|
|
|
538 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM
|
|
|
539 // functions are all silently ignored unless JVM warnings are printed.
|
|
|
540
|
|
|
541 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls))
|
|
|
542 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported");
|
|
|
543 JVM_END
|
|
|
544
|
|
|
545
|
|
|
546 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls))
|
|
|
547 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported");
|
|
|
548 return JNI_FALSE;
|
|
|
549 JVM_END
|
|
|
550
|
|
|
551
|
|
|
552 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls))
|
|
|
553 if (PrintJVMWarnings) warning("JVM_CompileClass not supported");
|
|
|
554 return JNI_FALSE;
|
|
|
555 JVM_END
|
|
|
556
|
|
|
557
|
|
|
558 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname))
|
|
|
559 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported");
|
|
|
560 return JNI_FALSE;
|
|
|
561 JVM_END
|
|
|
562
|
|
|
563
|
|
|
564 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg))
|
|
|
565 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported");
|
|
|
566 return NULL;
|
|
|
567 JVM_END
|
|
|
568
|
|
|
569
|
|
|
570 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls))
|
|
|
571 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported");
|
|
|
572 JVM_END
|
|
|
573
|
|
|
574
|
|
|
575 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls))
|
|
|
576 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported");
|
|
|
577 JVM_END
|
|
|
578
|
|
|
579
|
|
|
580
|
|
|
581 // Error message support //////////////////////////////////////////////////////
|
|
|
582
|
|
|
583 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len))
|
|
|
584 JVMWrapper("JVM_GetLastErrorString");
|
|
|
585 return hpi::lasterror(buf, len);
|
|
|
586 JVM_END
|
|
|
587
|
|
|
588
|
|
|
589 // java.io.File ///////////////////////////////////////////////////////////////
|
|
|
590
|
|
|
591 JVM_LEAF(char*, JVM_NativePath(char* path))
|
|
|
592 JVMWrapper2("JVM_NativePath (%s)", path);
|
|
|
593 return hpi::native_path(path);
|
|
|
594 JVM_END
|
|
|
595
|
|
|
596
|
|
|
597 // Misc. class handling ///////////////////////////////////////////////////////////
|
|
|
598
|
|
|
599
|
|
|
600 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth))
|
|
|
601 JVMWrapper("JVM_GetCallerClass");
|
|
|
602 klassOop k = thread->security_get_caller_class(depth);
|
|
|
603 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
|
|
|
604 JVM_END
|
|
|
605
|
|
|
606
|
|
|
607 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf))
|
|
|
608 JVMWrapper("JVM_FindPrimitiveClass");
|
|
|
609 oop mirror = NULL;
|
|
|
610 BasicType t = name2type(utf);
|
|
|
611 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) {
|
|
|
612 mirror = Universe::java_mirror(t);
|
|
|
613 }
|
|
|
614 if (mirror == NULL) {
|
|
|
615 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf);
|
|
|
616 } else {
|
|
|
617 return (jclass) JNIHandles::make_local(env, mirror);
|
|
|
618 }
|
|
|
619 JVM_END
|
|
|
620
|
|
|
621
|
|
|
622 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls))
|
|
|
623 JVMWrapper("JVM_ResolveClass");
|
|
|
624 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented");
|
|
|
625 JVM_END
|
|
|
626
|
|
|
627
|
|
|
628 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name,
|
|
|
629 jboolean init, jobject loader,
|
|
|
630 jboolean throwError))
|
|
|
631 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name,
|
|
|
632 throwError ? "error" : "exception");
|
|
|
633 // Java libraries should ensure that name is never null...
|
|
|
634 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) {
|
|
|
635 // It's impossible to create this class; the name cannot fit
|
|
|
636 // into the constant pool.
|
|
|
637 if (throwError) {
|
|
|
638 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
|
|
|
639 } else {
|
|
|
640 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name);
|
|
|
641 }
|
|
|
642 }
|
|
|
643 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL);
|
|
|
644 Handle h_loader(THREAD, JNIHandles::resolve(loader));
|
|
|
645 jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
|
|
|
646 Handle(), throwError, thread);
|
|
|
647
|
|
|
648 if (TraceClassResolution && result != NULL) {
|
|
|
649 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
|
|
|
650 }
|
|
|
651
|
|
|
652 return result;
|
|
|
653 JVM_END
|
|
|
654
|
|
|
655
|
|
|
656 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name,
|
|
|
657 jboolean init, jclass from))
|
|
|
658 JVMWrapper2("JVM_FindClassFromClass %s", name);
|
|
|
659 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) {
|
|
|
660 // It's impossible to create this class; the name cannot fit
|
|
|
661 // into the constant pool.
|
|
|
662 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
|
|
|
663 }
|
|
|
664 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL);
|
|
|
665 oop from_class_oop = JNIHandles::resolve(from);
|
|
|
666 klassOop from_class = (from_class_oop == NULL)
|
|
|
667 ? (klassOop)NULL
|
|
|
668 : java_lang_Class::as_klassOop(from_class_oop);
|
|
|
669 oop class_loader = NULL;
|
|
|
670 oop protection_domain = NULL;
|
|
|
671 if (from_class != NULL) {
|
|
|
672 class_loader = Klass::cast(from_class)->class_loader();
|
|
|
673 protection_domain = Klass::cast(from_class)->protection_domain();
|
|
|
674 }
|
|
|
675 Handle h_loader(THREAD, class_loader);
|
|
|
676 Handle h_prot (THREAD, protection_domain);
|
|
|
677 jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
|
|
|
678 h_prot, true, thread);
|
|
|
679
|
|
|
680 if (TraceClassResolution && result != NULL) {
|
|
|
681 // this function is generally only used for class loading during verification.
|
|
|
682 ResourceMark rm;
|
|
|
683 oop from_mirror = JNIHandles::resolve_non_null(from);
|
|
|
684 klassOop from_class = java_lang_Class::as_klassOop(from_mirror);
|
|
|
685 const char * from_name = Klass::cast(from_class)->external_name();
|
|
|
686
|
|
|
687 oop mirror = JNIHandles::resolve_non_null(result);
|
|
|
688 klassOop to_class = java_lang_Class::as_klassOop(mirror);
|
|
|
689 const char * to = Klass::cast(to_class)->external_name();
|
|
|
690 tty->print("RESOLVE %s %s (verification)\n", from_name, to);
|
|
|
691 }
|
|
|
692
|
|
|
693 return result;
|
|
|
694 JVM_END
|
|
|
695
|
|
|
696 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) {
|
|
|
697 if (loader.is_null()) {
|
|
|
698 return;
|
|
|
699 }
|
|
|
700
|
|
|
701 // check whether the current caller thread holds the lock or not.
|
|
|
702 // If not, increment the corresponding counter
|
|
|
703 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) !=
|
|
|
704 ObjectSynchronizer::owner_self) {
|
|
|
705 counter->inc();
|
|
|
706 }
|
|
|
707 }
|
|
|
708
|
|
|
709 // common code for JVM_DefineClass() and JVM_DefineClassWithSource()
|
|
|
710 static jclass jvm_define_class_common(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source, TRAPS) {
|
|
|
711
|
|
|
712 // Since exceptions can be thrown, class initialization can take place
|
|
|
713 // if name is NULL no check for class name in .class stream has to be made.
|
|
|
714 symbolHandle class_name;
|
|
|
715 if (name != NULL) {
|
|
|
716 const int str_len = (int)strlen(name);
|
|
|
717 if (str_len > symbolOopDesc::max_length()) {
|
|
|
718 // It's impossible to create this class; the name cannot fit
|
|
|
719 // into the constant pool.
|
|
|
720 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
|
|
|
721 }
|
|
|
722 class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL);
|
|
|
723 }
|
|
|
724
|
|
|
725 ResourceMark rm(THREAD);
|
|
|
726 ClassFileStream st((u1*) buf, len, (char *)source);
|
|
|
727 Handle class_loader (THREAD, JNIHandles::resolve(loader));
|
|
|
728 if (UsePerfData) {
|
|
|
729 is_lock_held_by_thread(class_loader,
|
|
|
730 ClassLoader::sync_JVMDefineClassLockFreeCounter(),
|
|
|
731 THREAD);
|
|
|
732 }
|
|
|
733 Handle protection_domain (THREAD, JNIHandles::resolve(pd));
|
|
|
734 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
|
|
|
735 protection_domain, &st,
|
|
|
736 CHECK_NULL);
|
|
|
737
|
|
|
738 if (TraceClassResolution && k != NULL) {
|
|
|
739 trace_class_resolution(k);
|
|
|
740 }
|
|
|
741
|
|
|
742 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
|
|
|
743 }
|
|
|
744
|
|
|
745
|
|
|
746 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd))
|
|
|
747 JVMWrapper2("JVM_DefineClass %s", name);
|
|
|
748
|
|
|
749 return jvm_define_class_common(env, name, loader, buf, len, pd, "__JVM_DefineClass__", THREAD);
|
|
|
750 JVM_END
|
|
|
751
|
|
|
752
|
|
|
753 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source))
|
|
|
754 JVMWrapper2("JVM_DefineClassWithSource %s", name);
|
|
|
755
|
|
|
756 return jvm_define_class_common(env, name, loader, buf, len, pd, source, THREAD);
|
|
|
757 JVM_END
|
|
|
758
|
|
|
759
|
|
|
760 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name))
|
|
|
761 JVMWrapper("JVM_FindLoadedClass");
|
|
|
762 ResourceMark rm(THREAD);
|
|
|
763
|
|
|
764 Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
|
|
|
765 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL);
|
|
|
766
|
|
|
767 const char* str = java_lang_String::as_utf8_string(string());
|
|
|
768 // Sanity check, don't expect null
|
|
|
769 if (str == NULL) return NULL;
|
|
|
770
|
|
|
771 const int str_len = (int)strlen(str);
|
|
|
772 if (str_len > symbolOopDesc::max_length()) {
|
|
|
773 // It's impossible to create this class; the name cannot fit
|
|
|
774 // into the constant pool.
|
|
|
775 return NULL;
|
|
|
776 }
|
|
|
777 symbolHandle klass_name = oopFactory::new_symbol_handle(str, str_len,CHECK_NULL);
|
|
|
778
|
|
|
779 // Security Note:
|
|
|
780 // The Java level wrapper will perform the necessary security check allowing
|
|
|
781 // us to pass the NULL as the initiating class loader.
|
|
|
782 Handle h_loader(THREAD, JNIHandles::resolve(loader));
|
|
|
783 if (UsePerfData) {
|
|
|
784 is_lock_held_by_thread(h_loader,
|
|
|
785 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(),
|
|
|
786 THREAD);
|
|
|
787 }
|
|
|
788
|
|
|
789 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name,
|
|
|
790 h_loader,
|
|
|
791 Handle(),
|
|
|
792 CHECK_NULL);
|
|
|
793
|
|
|
794 return (k == NULL) ? NULL :
|
|
|
795 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
|
|
|
796 JVM_END
|
|
|
797
|
|
|
798
|
|
|
799 // Reflection support //////////////////////////////////////////////////////////////////////////////
|
|
|
800
|
|
|
801 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls))
|
|
|
802 assert (cls != NULL, "illegal class");
|
|
|
803 JVMWrapper("JVM_GetClassName");
|
|
|
804 JvmtiVMObjectAllocEventCollector oam;
|
|
|
805 ResourceMark rm(THREAD);
|
|
|
806 const char* name;
|
|
|
807 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
|
|
|
808 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls)));
|
|
|
809 } else {
|
|
|
810 // Consider caching interned string in Klass
|
|
|
811 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls));
|
|
|
812 assert(k->is_klass(), "just checking");
|
|
|
813 name = Klass::cast(k)->external_name();
|
|
|
814 }
|
|
|
815 oop result = StringTable::intern((char*) name, CHECK_NULL);
|
|
|
816 return (jstring) JNIHandles::make_local(env, result);
|
|
|
817 JVM_END
|
|
|
818
|
|
|
819
|
|
|
820 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls))
|
|
|
821 JVMWrapper("JVM_GetClassInterfaces");
|
|
|
822 JvmtiVMObjectAllocEventCollector oam;
|
|
|
823 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
824
|
|
|
825 // Special handling for primitive objects
|
|
|
826 if (java_lang_Class::is_primitive(mirror)) {
|
|
|
827 // Primitive objects does not have any interfaces
|
|
|
828 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL);
|
|
|
829 return (jobjectArray) JNIHandles::make_local(env, r);
|
|
|
830 }
|
|
|
831
|
|
|
832 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror));
|
|
|
833 // Figure size of result array
|
|
|
834 int size;
|
|
|
835 if (klass->oop_is_instance()) {
|
|
|
836 size = instanceKlass::cast(klass())->local_interfaces()->length();
|
|
|
837 } else {
|
|
|
838 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass");
|
|
|
839 size = 2;
|
|
|
840 }
|
|
|
841
|
|
|
842 // Allocate result array
|
|
|
843 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), size, CHECK_NULL);
|
|
|
844 objArrayHandle result (THREAD, r);
|
|
|
845 // Fill in result
|
|
|
846 if (klass->oop_is_instance()) {
|
|
|
847 // Regular instance klass, fill in all local interfaces
|
|
|
848 for (int index = 0; index < size; index++) {
|
|
|
849 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index));
|
|
|
850 result->obj_at_put(index, Klass::cast(k)->java_mirror());
|
|
|
851 }
|
|
|
852 } else {
|
|
|
853 // All arrays implement java.lang.Cloneable and java.io.Serializable
|
|
|
854 result->obj_at_put(0, Klass::cast(SystemDictionary::cloneable_klass())->java_mirror());
|
|
|
855 result->obj_at_put(1, Klass::cast(SystemDictionary::serializable_klass())->java_mirror());
|
|
|
856 }
|
|
|
857 return (jobjectArray) JNIHandles::make_local(env, result());
|
|
|
858 JVM_END
|
|
|
859
|
|
|
860
|
|
|
861 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls))
|
|
|
862 JVMWrapper("JVM_GetClassLoader");
|
|
|
863 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
864 return NULL;
|
|
|
865 }
|
|
|
866 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
867 oop loader = Klass::cast(k)->class_loader();
|
|
|
868 return JNIHandles::make_local(env, loader);
|
|
|
869 JVM_END
|
|
|
870
|
|
|
871
|
|
|
872 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls))
|
|
|
873 JVMWrapper("JVM_IsInterface");
|
|
|
874 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
875 if (java_lang_Class::is_primitive(mirror)) {
|
|
|
876 return JNI_FALSE;
|
|
|
877 }
|
|
|
878 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
|
879 jboolean result = Klass::cast(k)->is_interface();
|
|
|
880 assert(!result || Klass::cast(k)->oop_is_instance(),
|
|
|
881 "all interfaces are instance types");
|
|
|
882 // The compiler intrinsic for isInterface tests the
|
|
|
883 // Klass::_access_flags bits in the same way.
|
|
|
884 return result;
|
|
|
885 JVM_END
|
|
|
886
|
|
|
887
|
|
|
888 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls))
|
|
|
889 JVMWrapper("JVM_GetClassSigners");
|
|
|
890 JvmtiVMObjectAllocEventCollector oam;
|
|
|
891 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
892 // There are no signers for primitive types
|
|
|
893 return NULL;
|
|
|
894 }
|
|
|
895
|
|
|
896 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
897 objArrayOop signers = NULL;
|
|
|
898 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
899 signers = instanceKlass::cast(k)->signers();
|
|
|
900 }
|
|
|
901
|
|
|
902 // If there are no signers set in the class, or if the class
|
|
|
903 // is an array, return NULL.
|
|
|
904 if (signers == NULL) return NULL;
|
|
|
905
|
|
|
906 // copy of the signers array
|
|
|
907 klassOop element = objArrayKlass::cast(signers->klass())->element_klass();
|
|
|
908 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL);
|
|
|
909 for (int index = 0; index < signers->length(); index++) {
|
|
|
910 signers_copy->obj_at_put(index, signers->obj_at(index));
|
|
|
911 }
|
|
|
912
|
|
|
913 // return the copy
|
|
|
914 return (jobjectArray) JNIHandles::make_local(env, signers_copy);
|
|
|
915 JVM_END
|
|
|
916
|
|
|
917
|
|
|
918 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers))
|
|
|
919 JVMWrapper("JVM_SetClassSigners");
|
|
|
920 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
921 // This call is ignored for primitive types and arrays.
|
|
|
922 // Signers are only set once, ClassLoader.java, and thus shouldn't
|
|
|
923 // be called with an array. Only the bootstrap loader creates arrays.
|
|
|
924 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
925 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
926 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers)));
|
|
|
927 }
|
|
|
928 }
|
|
|
929 JVM_END
|
|
|
930
|
|
|
931
|
|
|
932 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls))
|
|
|
933 JVMWrapper("JVM_GetProtectionDomain");
|
|
|
934 if (JNIHandles::resolve(cls) == NULL) {
|
|
|
935 THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
|
|
|
936 }
|
|
|
937
|
|
|
938 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
|
|
|
939 // Primitive types does not have a protection domain.
|
|
|
940 return NULL;
|
|
|
941 }
|
|
|
942
|
|
|
943 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls));
|
|
|
944 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain());
|
|
|
945 JVM_END
|
|
|
946
|
|
|
947
|
|
|
948 // Obsolete since 1.2 (Class.setProtectionDomain removed), although
|
|
|
949 // still defined in core libraries as of 1.5.
|
|
|
950 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain))
|
|
|
951 JVMWrapper("JVM_SetProtectionDomain");
|
|
|
952 if (JNIHandles::resolve(cls) == NULL) {
|
|
|
953 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
954 }
|
|
|
955 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
|
|
|
956 // Call is ignored for primitive types
|
|
|
957 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls));
|
|
|
958
|
|
|
959 // cls won't be an array, as this called only from ClassLoader.defineClass
|
|
|
960 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
961 oop pd = JNIHandles::resolve(protection_domain);
|
|
|
962 assert(pd == NULL || pd->is_oop(), "just checking");
|
|
|
963 instanceKlass::cast(k)->set_protection_domain(pd);
|
|
|
964 }
|
|
|
965 }
|
|
|
966 JVM_END
|
|
|
967
|
|
|
968
|
|
|
969 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException))
|
|
|
970 JVMWrapper("JVM_DoPrivileged");
|
|
|
971
|
|
|
972 if (action == NULL) {
|
|
|
973 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action");
|
|
|
974 }
|
|
|
975
|
|
|
976 // Stack allocated list of privileged stack elements
|
|
|
977 PrivilegedElement pi;
|
|
|
978
|
|
|
979 // Check that action object understands "Object run()"
|
|
|
980 Handle object (THREAD, JNIHandles::resolve(action));
|
|
|
981
|
|
|
982 // get run() method
|
|
|
983 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method(
|
|
|
984 vmSymbols::run_method_name(),
|
|
|
985 vmSymbols::void_object_signature());
|
|
|
986 methodHandle m (THREAD, m_oop);
|
|
|
987 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) {
|
|
|
988 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method");
|
|
|
989 }
|
|
|
990
|
|
|
991 // Compute the frame initiating the do privileged operation and setup the privileged stack
|
|
|
992 vframeStream vfst(thread);
|
|
|
993 vfst.security_get_caller_frame(1);
|
|
|
994
|
|
|
995 if (!vfst.at_end()) {
|
|
|
996 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL);
|
|
|
997 thread->set_privileged_stack_top(&pi);
|
|
|
998 }
|
|
|
999
|
|
|
1000
|
|
|
1001 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type
|
|
|
1002 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction
|
|
|
1003 Handle pending_exception;
|
|
|
1004 JavaValue result(T_OBJECT);
|
|
|
1005 JavaCallArguments args(object);
|
|
|
1006 JavaCalls::call(&result, m, &args, THREAD);
|
|
|
1007
|
|
|
1008 // done with action, remove ourselves from the list
|
|
|
1009 if (!vfst.at_end()) {
|
|
|
1010 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element");
|
|
|
1011 thread->set_privileged_stack_top(thread->privileged_stack_top()->next());
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 if (HAS_PENDING_EXCEPTION) {
|
|
|
1015 pending_exception = Handle(THREAD, PENDING_EXCEPTION);
|
|
|
1016 CLEAR_PENDING_EXCEPTION;
|
|
|
1017
|
|
|
1018 if ( pending_exception->is_a(SystemDictionary::exception_klass()) &&
|
|
|
1019 !pending_exception->is_a(SystemDictionary::runtime_exception_klass())) {
|
|
|
1020 // Throw a java.security.PrivilegedActionException(Exception e) exception
|
|
|
1021 JavaCallArguments args(pending_exception);
|
|
|
1022 THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(),
|
|
|
1023 vmSymbolHandles::exception_void_signature(),
|
|
|
1024 &args);
|
|
|
1025 }
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 if (pending_exception.not_null()) THROW_OOP_0(pending_exception());
|
|
|
1029 return JNIHandles::make_local(env, (oop) result.get_jobject());
|
|
|
1030 JVM_END
|
|
|
1031
|
|
|
1032
|
|
|
1033 // Returns the inherited_access_control_context field of the running thread.
|
|
|
1034 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls))
|
|
|
1035 JVMWrapper("JVM_GetInheritedAccessControlContext");
|
|
|
1036 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj());
|
|
|
1037 return JNIHandles::make_local(env, result);
|
|
|
1038 JVM_END
|
|
|
1039
|
|
|
1040 class RegisterArrayForGC {
|
|
|
1041 private:
|
|
|
1042 JavaThread *_thread;
|
|
|
1043 public:
|
|
|
1044 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) {
|
|
|
1045 _thread = thread;
|
|
|
1046 _thread->register_array_for_gc(array);
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 ~RegisterArrayForGC() {
|
|
|
1050 _thread->register_array_for_gc(NULL);
|
|
|
1051 }
|
|
|
1052 };
|
|
|
1053
|
|
|
1054
|
|
|
1055 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls))
|
|
|
1056 JVMWrapper("JVM_GetStackAccessControlContext");
|
|
|
1057 if (!UsePrivilegedStack) return NULL;
|
|
|
1058
|
|
|
1059 ResourceMark rm(THREAD);
|
|
|
1060 GrowableArray<oop>* local_array = new GrowableArray<oop>(12);
|
|
|
1061 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1062
|
|
|
1063 // count the protection domains on the execution stack. We collapse
|
|
|
1064 // duplicate consecutive protection domains into a single one, as
|
|
|
1065 // well as stopping when we hit a privileged frame.
|
|
|
1066
|
|
|
1067 // Use vframeStream to iterate through Java frames
|
|
|
1068 vframeStream vfst(thread);
|
|
|
1069
|
|
|
1070 oop previous_protection_domain = NULL;
|
|
|
1071 Handle privileged_context(thread, NULL);
|
|
|
1072 bool is_privileged = false;
|
|
|
1073 oop protection_domain = NULL;
|
|
|
1074
|
|
|
1075 for(; !vfst.at_end(); vfst.next()) {
|
|
|
1076 // get method of frame
|
|
|
1077 methodOop method = vfst.method();
|
|
|
1078 intptr_t* frame_id = vfst.frame_id();
|
|
|
1079
|
|
|
1080 // check the privileged frames to see if we have a match
|
|
|
1081 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) {
|
|
|
1082 // this frame is privileged
|
|
|
1083 is_privileged = true;
|
|
|
1084 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context());
|
|
|
1085 protection_domain = thread->privileged_stack_top()->protection_domain();
|
|
|
1086 } else {
|
|
|
1087 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain();
|
|
|
1088 }
|
|
|
1089
|
|
|
1090 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) {
|
|
|
1091 local_array->push(protection_domain);
|
|
|
1092 previous_protection_domain = protection_domain;
|
|
|
1093 }
|
|
|
1094
|
|
|
1095 if (is_privileged) break;
|
|
|
1096 }
|
|
|
1097
|
|
|
1098
|
|
|
1099 // either all the domains on the stack were system domains, or
|
|
|
1100 // we had a privileged system domain
|
|
|
1101 if (local_array->is_empty()) {
|
|
|
1102 if (is_privileged && privileged_context.is_null()) return NULL;
|
|
|
1103
|
|
|
1104 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL);
|
|
|
1105 return JNIHandles::make_local(env, result);
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 // the resource area must be registered in case of a gc
|
|
|
1109 RegisterArrayForGC ragc(thread, local_array);
|
|
|
1110 objArrayOop context = oopFactory::new_objArray(SystemDictionary::protectionDomain_klass(),
|
|
|
1111 local_array->length(), CHECK_NULL);
|
|
|
1112 objArrayHandle h_context(thread, context);
|
|
|
1113 for (int index = 0; index < local_array->length(); index++) {
|
|
|
1114 h_context->obj_at_put(index, local_array->at(index));
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL);
|
|
|
1118
|
|
|
1119 return JNIHandles::make_local(env, result);
|
|
|
1120 JVM_END
|
|
|
1121
|
|
|
1122
|
|
|
1123 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls))
|
|
|
1124 JVMWrapper("JVM_IsArrayClass");
|
|
|
1125 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1126 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false;
|
|
|
1127 JVM_END
|
|
|
1128
|
|
|
1129
|
|
|
1130 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls))
|
|
|
1131 JVMWrapper("JVM_IsPrimitiveClass");
|
|
|
1132 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
1133 return (jboolean) java_lang_Class::is_primitive(mirror);
|
|
|
1134 JVM_END
|
|
|
1135
|
|
|
1136
|
|
|
1137 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls))
|
|
|
1138 JVMWrapper("JVM_GetComponentType");
|
|
|
1139 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
1140 oop result = Reflection::array_component_type(mirror, CHECK_NULL);
|
|
|
1141 return (jclass) JNIHandles::make_local(env, result);
|
|
|
1142 JVM_END
|
|
|
1143
|
|
|
1144
|
|
|
1145 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls))
|
|
|
1146 JVMWrapper("JVM_GetClassModifiers");
|
|
|
1147 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
1148 // Primitive type
|
|
|
1149 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
|
|
|
1150 }
|
|
|
1151
|
|
|
1152 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)));
|
|
|
1153 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0));
|
|
|
1154 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK");
|
|
|
1155 return k->modifier_flags();
|
|
|
1156 JVM_END
|
|
|
1157
|
|
|
1158
|
|
|
1159 // Inner class reflection ///////////////////////////////////////////////////////////////////////////////
|
|
|
1160
|
|
|
1161 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass))
|
|
|
1162 const int inner_class_info_index = 0;
|
|
|
1163 const int outer_class_info_index = 1;
|
|
|
1164
|
|
|
1165 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1166 // ofClass is a reference to a java_lang_Class object. The mirror object
|
|
|
1167 // of an instanceKlass
|
|
|
1168
|
|
|
1169 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
|
|
|
1170 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) {
|
|
|
1171 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL);
|
|
|
1172 return (jobjectArray)JNIHandles::make_local(env, result);
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)));
|
|
|
1176
|
|
|
1177 if (k->inner_classes()->length() == 0) {
|
|
|
1178 // Neither an inner nor outer class
|
|
|
1179 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL);
|
|
|
1180 return (jobjectArray)JNIHandles::make_local(env, result);
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 // find inner class info
|
|
|
1184 typeArrayHandle icls(thread, k->inner_classes());
|
|
|
1185 constantPoolHandle cp(thread, k->constants());
|
|
|
1186 int length = icls->length();
|
|
|
1187
|
|
|
1188 // Allocate temp. result array
|
|
|
1189 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), length/4, CHECK_NULL);
|
|
|
1190 objArrayHandle result (THREAD, r);
|
|
|
1191 int members = 0;
|
|
|
1192
|
|
|
1193 for(int i = 0; i < length; i += 4) {
|
|
|
1194 int ioff = icls->ushort_at(i + inner_class_info_index);
|
|
|
1195 int ooff = icls->ushort_at(i + outer_class_info_index);
|
|
|
1196
|
|
|
1197 if (ioff != 0 && ooff != 0) {
|
|
|
1198 // Check to see if the name matches the class we're looking for
|
|
|
1199 // before attempting to find the class.
|
|
|
1200 if (cp->klass_name_at_matches(k, ooff)) {
|
|
|
1201 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL);
|
|
|
1202 if (outer_klass == k()) {
|
|
|
1203 klassOop ik = cp->klass_at(ioff, CHECK_NULL);
|
|
|
1204 instanceKlassHandle inner_klass (THREAD, ik);
|
|
|
1205
|
|
|
1206 // Throws an exception if outer klass has not declared k as
|
|
|
1207 // an inner klass
|
|
|
1208 Reflection::check_for_inner_class(k, inner_klass, CHECK_NULL);
|
|
|
1209
|
|
|
1210 result->obj_at_put(members, inner_klass->java_mirror());
|
|
|
1211 members++;
|
|
|
1212 }
|
|
|
1213 }
|
|
|
1214 }
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 if (members != length) {
|
|
|
1218 // Return array of right length
|
|
|
1219 objArrayOop res = oopFactory::new_objArray(SystemDictionary::class_klass(), members, CHECK_NULL);
|
|
|
1220 for(int i = 0; i < members; i++) {
|
|
|
1221 res->obj_at_put(i, result->obj_at(i));
|
|
|
1222 }
|
|
|
1223 return (jobjectArray)JNIHandles::make_local(env, res);
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 return (jobjectArray)JNIHandles::make_local(env, result());
|
|
|
1227 JVM_END
|
|
|
1228
|
|
|
1229
|
|
|
1230 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass))
|
|
|
1231 const int inner_class_info_index = 0;
|
|
|
1232 const int outer_class_info_index = 1;
|
|
|
1233
|
|
|
1234 // ofClass is a reference to a java_lang_Class object.
|
|
|
1235 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
|
|
|
1236 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) {
|
|
|
1237 return NULL;
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)));
|
|
|
1241
|
|
|
1242 if (k->inner_classes()->length() == 0) {
|
|
|
1243 // No inner class info => no declaring class
|
|
|
1244 return NULL;
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 typeArrayHandle i_icls(thread, k->inner_classes());
|
|
|
1248 constantPoolHandle i_cp(thread, k->constants());
|
|
|
1249 int i_length = i_icls->length();
|
|
|
1250
|
|
|
1251 bool found = false;
|
|
|
1252 klassOop ok;
|
|
|
1253 instanceKlassHandle outer_klass;
|
|
|
1254
|
|
|
1255 // Find inner_klass attribute
|
|
|
1256 for(int i = 0; i < i_length && !found; i+= 4) {
|
|
|
1257 int ioff = i_icls->ushort_at(i + inner_class_info_index);
|
|
|
1258 int ooff = i_icls->ushort_at(i + outer_class_info_index);
|
|
|
1259
|
|
|
1260 if (ioff != 0 && ooff != 0) {
|
|
|
1261 // Check to see if the name matches the class we're looking for
|
|
|
1262 // before attempting to find the class.
|
|
|
1263 if (i_cp->klass_name_at_matches(k, ioff)) {
|
|
|
1264 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL);
|
|
|
1265 if (k() == inner_klass) {
|
|
|
1266 found = true;
|
|
|
1267 ok = i_cp->klass_at(ooff, CHECK_NULL);
|
|
|
1268 outer_klass = instanceKlassHandle(thread, ok);
|
|
|
1269 }
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 // If no inner class attribute found for this class.
|
|
|
1275 if (!found) return NULL;
|
|
|
1276
|
|
|
1277 // Throws an exception if outer klass has not declared k as an inner klass
|
|
|
1278 Reflection::check_for_inner_class(outer_klass, k, CHECK_NULL);
|
|
|
1279
|
|
|
1280 return (jclass)JNIHandles::make_local(env, outer_klass->java_mirror());
|
|
|
1281 JVM_END
|
|
|
1282
|
|
|
1283
|
|
|
1284 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls))
|
|
|
1285 assert (cls != NULL, "illegal class");
|
|
|
1286 JVMWrapper("JVM_GetClassSignature");
|
|
|
1287 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1288 ResourceMark rm(THREAD);
|
|
|
1289 // Return null for arrays and primatives
|
|
|
1290 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
|
|
|
1291 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls));
|
|
|
1292 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
1293 symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature());
|
|
|
1294 if (sym.is_null()) return NULL;
|
|
|
1295 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
|
|
|
1296 return (jstring) JNIHandles::make_local(env, str());
|
|
|
1297 }
|
|
|
1298 }
|
|
|
1299 return NULL;
|
|
|
1300 JVM_END
|
|
|
1301
|
|
|
1302
|
|
|
1303 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls))
|
|
|
1304 assert (cls != NULL, "illegal class");
|
|
|
1305 JVMWrapper("JVM_GetClassAnnotations");
|
|
|
1306 ResourceMark rm(THREAD);
|
|
|
1307 // Return null for arrays and primitives
|
|
|
1308 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
|
|
|
1309 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls));
|
|
|
1310 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
1311 return (jbyteArray) JNIHandles::make_local(env,
|
|
|
1312 instanceKlass::cast(k)->class_annotations());
|
|
|
1313 }
|
|
|
1314 }
|
|
|
1315 return NULL;
|
|
|
1316 JVM_END
|
|
|
1317
|
|
|
1318
|
|
|
1319 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field))
|
|
|
1320 assert(field != NULL, "illegal field");
|
|
|
1321 JVMWrapper("JVM_GetFieldAnnotations");
|
|
|
1322
|
|
|
1323 // some of this code was adapted from from jni_FromReflectedField
|
|
|
1324
|
|
|
1325 // field is a handle to a java.lang.reflect.Field object
|
|
|
1326 oop reflected = JNIHandles::resolve_non_null(field);
|
|
|
1327 oop mirror = java_lang_reflect_Field::clazz(reflected);
|
|
|
1328 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
|
1329 int slot = java_lang_reflect_Field::slot(reflected);
|
|
|
1330 int modifiers = java_lang_reflect_Field::modifiers(reflected);
|
|
|
1331
|
|
|
1332 fieldDescriptor fd;
|
|
|
1333 KlassHandle kh(THREAD, k);
|
|
|
1334 intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot);
|
|
|
1335
|
|
|
1336 if (modifiers & JVM_ACC_STATIC) {
|
|
|
1337 // for static fields we only look in the current class
|
|
|
1338 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset,
|
|
|
1339 true, &fd)) {
|
|
|
1340 assert(false, "cannot find static field");
|
|
|
1341 return NULL; // robustness
|
|
|
1342 }
|
|
|
1343 } else {
|
|
|
1344 // for instance fields we start with the current class and work
|
|
|
1345 // our way up through the superclass chain
|
|
|
1346 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false,
|
|
|
1347 &fd)) {
|
|
|
1348 assert(false, "cannot find instance field");
|
|
|
1349 return NULL; // robustness
|
|
|
1350 }
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 return (jbyteArray) JNIHandles::make_local(env, fd.annotations());
|
|
|
1354 JVM_END
|
|
|
1355
|
|
|
1356
|
|
|
1357 static methodOop jvm_get_method_common(jobject method, TRAPS) {
|
|
|
1358 // some of this code was adapted from from jni_FromReflectedMethod
|
|
|
1359
|
|
|
1360 oop reflected = JNIHandles::resolve_non_null(method);
|
|
|
1361 oop mirror = NULL;
|
|
|
1362 int slot = 0;
|
|
|
1363
|
|
|
1364 if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) {
|
|
|
1365 mirror = java_lang_reflect_Constructor::clazz(reflected);
|
|
|
1366 slot = java_lang_reflect_Constructor::slot(reflected);
|
|
|
1367 } else {
|
|
|
1368 assert(reflected->klass() == SystemDictionary::reflect_method_klass(),
|
|
|
1369 "wrong type");
|
|
|
1370 mirror = java_lang_reflect_Method::clazz(reflected);
|
|
|
1371 slot = java_lang_reflect_Method::slot(reflected);
|
|
|
1372 }
|
|
|
1373 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
|
1374
|
|
|
1375 KlassHandle kh(THREAD, k);
|
|
|
1376 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot);
|
|
|
1377 if (m == NULL) {
|
|
|
1378 assert(false, "cannot find method");
|
|
|
1379 return NULL; // robustness
|
|
|
1380 }
|
|
|
1381
|
|
|
1382 return m;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385
|
|
|
1386 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method))
|
|
|
1387 JVMWrapper("JVM_GetMethodAnnotations");
|
|
|
1388
|
|
|
1389 // method is a handle to a java.lang.reflect.Method object
|
|
|
1390 methodOop m = jvm_get_method_common(method, CHECK_NULL);
|
|
|
1391 return (jbyteArray) JNIHandles::make_local(env, m->annotations());
|
|
|
1392 JVM_END
|
|
|
1393
|
|
|
1394
|
|
|
1395 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method))
|
|
|
1396 JVMWrapper("JVM_GetMethodDefaultAnnotationValue");
|
|
|
1397
|
|
|
1398 // method is a handle to a java.lang.reflect.Method object
|
|
|
1399 methodOop m = jvm_get_method_common(method, CHECK_NULL);
|
|
|
1400 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default());
|
|
|
1401 JVM_END
|
|
|
1402
|
|
|
1403
|
|
|
1404 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method))
|
|
|
1405 JVMWrapper("JVM_GetMethodParameterAnnotations");
|
|
|
1406
|
|
|
1407 // method is a handle to a java.lang.reflect.Method object
|
|
|
1408 methodOop m = jvm_get_method_common(method, CHECK_NULL);
|
|
|
1409 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations());
|
|
|
1410 JVM_END
|
|
|
1411
|
|
|
1412
|
|
|
1413 // New (JDK 1.4) reflection implementation /////////////////////////////////////
|
|
|
1414
|
|
|
1415 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly))
|
|
|
1416 {
|
|
|
1417 JVMWrapper("JVM_GetClassDeclaredFields");
|
|
|
1418 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1419
|
|
|
1420 // Exclude primitive types and array types
|
|
|
1421 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
|
|
|
1422 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) {
|
|
|
1423 // Return empty array
|
|
|
1424 oop res = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), 0, CHECK_NULL);
|
|
|
1425 return (jobjectArray) JNIHandles::make_local(env, res);
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)));
|
|
|
1429 constantPoolHandle cp(THREAD, k->constants());
|
|
|
1430
|
|
|
1431 // Ensure class is linked
|
|
|
1432 k->link_class(CHECK_NULL);
|
|
|
1433
|
|
|
1434 typeArrayHandle fields(THREAD, k->fields());
|
|
|
1435 int fields_len = fields->length();
|
|
|
1436
|
|
|
1437 // 4496456 We need to filter out java.lang.Throwable.backtrace
|
|
|
1438 bool skip_backtrace = false;
|
|
|
1439
|
|
|
1440 // Allocate result
|
|
|
1441 int num_fields;
|
|
|
1442
|
|
|
1443 if (publicOnly) {
|
|
|
1444 num_fields = 0;
|
|
|
1445 for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) {
|
|
|
1446 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
|
1447 if (mods & JVM_ACC_PUBLIC) ++num_fields;
|
|
|
1448 }
|
|
|
1449 } else {
|
|
|
1450 num_fields = fields_len / instanceKlass::next_offset;
|
|
|
1451
|
|
|
1452 if (k() == SystemDictionary::throwable_klass()) {
|
|
|
1453 num_fields--;
|
|
|
1454 skip_backtrace = true;
|
|
|
1455 }
|
|
|
1456 }
|
|
|
1457
|
|
|
1458 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), num_fields, CHECK_NULL);
|
|
|
1459 objArrayHandle result (THREAD, r);
|
|
|
1460
|
|
|
1461 int out_idx = 0;
|
|
|
1462 fieldDescriptor fd;
|
|
|
1463 for (int i = 0; i < fields_len; i += instanceKlass::next_offset) {
|
|
|
1464 if (skip_backtrace) {
|
|
|
1465 // 4496456 skip java.lang.Throwable.backtrace
|
|
|
1466 int offset = k->offset_from_fields(i);
|
|
|
1467 if (offset == java_lang_Throwable::get_backtrace_offset()) continue;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
|
1471 if (!publicOnly || (mods & JVM_ACC_PUBLIC)) {
|
|
|
1472 fd.initialize(k(), i);
|
|
|
1473 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
|
|
|
1474 result->obj_at_put(out_idx, field);
|
|
|
1475 ++out_idx;
|
|
|
1476 }
|
|
|
1477 }
|
|
|
1478 assert(out_idx == num_fields, "just checking");
|
|
|
1479 return (jobjectArray) JNIHandles::make_local(env, result());
|
|
|
1480 }
|
|
|
1481 JVM_END
|
|
|
1482
|
|
|
1483 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
|
|
|
1484 {
|
|
|
1485 JVMWrapper("JVM_GetClassDeclaredMethods");
|
|
|
1486 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1487
|
|
|
1488 // Exclude primitive types and array types
|
|
|
1489 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass))
|
|
|
1490 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) {
|
|
|
1491 // Return empty array
|
|
|
1492 oop res = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), 0, CHECK_NULL);
|
|
|
1493 return (jobjectArray) JNIHandles::make_local(env, res);
|
|
|
1494 }
|
|
|
1495
|
|
|
1496 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)));
|
|
|
1497
|
|
|
1498 // Ensure class is linked
|
|
|
1499 k->link_class(CHECK_NULL);
|
|
|
1500
|
|
|
1501 objArrayHandle methods (THREAD, k->methods());
|
|
|
1502 int methods_length = methods->length();
|
|
|
1503 int num_methods = 0;
|
|
|
1504
|
|
|
1505 int i;
|
|
|
1506 for (i = 0; i < methods_length; i++) {
|
|
|
1507 methodHandle method(THREAD, (methodOop) methods->obj_at(i));
|
|
|
1508 if (!method->is_initializer()) {
|
|
|
1509 if (!publicOnly || method->is_public()) {
|
|
|
1510 ++num_methods;
|
|
|
1511 }
|
|
|
1512 }
|
|
|
1513 }
|
|
|
1514
|
|
|
1515 // Allocate result
|
|
|
1516 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), num_methods, CHECK_NULL);
|
|
|
1517 objArrayHandle result (THREAD, r);
|
|
|
1518
|
|
|
1519 int out_idx = 0;
|
|
|
1520 for (i = 0; i < methods_length; i++) {
|
|
|
1521 methodHandle method(THREAD, (methodOop) methods->obj_at(i));
|
|
|
1522 if (!method->is_initializer()) {
|
|
|
1523 if (!publicOnly || method->is_public()) {
|
|
|
1524 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL);
|
|
|
1525 result->obj_at_put(out_idx, m);
|
|
|
1526 ++out_idx;
|
|
|
1527 }
|
|
|
1528 }
|
|
|
1529 }
|
|
|
1530 assert(out_idx == num_methods, "just checking");
|
|
|
1531 return (jobjectArray) JNIHandles::make_local(env, result());
|
|
|
1532 }
|
|
|
1533 JVM_END
|
|
|
1534
|
|
|
1535 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly))
|
|
|
1536 {
|
|
|
1537 JVMWrapper("JVM_GetClassDeclaredConstructors");
|
|
|
1538 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1539
|
|
|
1540 // Exclude primitive types and array types
|
|
|
1541 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass))
|
|
|
1542 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) {
|
|
|
1543 // Return empty array
|
|
|
1544 oop res = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0 , CHECK_NULL);
|
|
|
1545 return (jobjectArray) JNIHandles::make_local(env, res);
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)));
|
|
|
1549
|
|
|
1550 // Ensure class is linked
|
|
|
1551 k->link_class(CHECK_NULL);
|
|
|
1552
|
|
|
1553 objArrayHandle methods (THREAD, k->methods());
|
|
|
1554 int methods_length = methods->length();
|
|
|
1555 int num_constructors = 0;
|
|
|
1556
|
|
|
1557 int i;
|
|
|
1558 for (i = 0; i < methods_length; i++) {
|
|
|
1559 methodHandle method(THREAD, (methodOop) methods->obj_at(i));
|
|
|
1560 if (method->is_initializer() && !method->is_static()) {
|
|
|
1561 if (!publicOnly || method->is_public()) {
|
|
|
1562 ++num_constructors;
|
|
|
1563 }
|
|
|
1564 }
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 // Allocate result
|
|
|
1568 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), num_constructors, CHECK_NULL);
|
|
|
1569 objArrayHandle result(THREAD, r);
|
|
|
1570
|
|
|
1571 int out_idx = 0;
|
|
|
1572 for (i = 0; i < methods_length; i++) {
|
|
|
1573 methodHandle method(THREAD, (methodOop) methods->obj_at(i));
|
|
|
1574 if (method->is_initializer() && !method->is_static()) {
|
|
|
1575 if (!publicOnly || method->is_public()) {
|
|
|
1576 oop m = Reflection::new_constructor(method, CHECK_NULL);
|
|
|
1577 result->obj_at_put(out_idx, m);
|
|
|
1578 ++out_idx;
|
|
|
1579 }
|
|
|
1580 }
|
|
|
1581 }
|
|
|
1582 assert(out_idx == num_constructors, "just checking");
|
|
|
1583 return (jobjectArray) JNIHandles::make_local(env, result());
|
|
|
1584 }
|
|
|
1585 JVM_END
|
|
|
1586
|
|
|
1587 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls))
|
|
|
1588 {
|
|
|
1589 JVMWrapper("JVM_GetClassAccessFlags");
|
|
|
1590 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
1591 // Primitive type
|
|
|
1592 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
|
|
|
1593 }
|
|
|
1594
|
|
|
1595 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)));
|
|
|
1596 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS;
|
|
|
1597 }
|
|
|
1598 JVM_END
|
|
|
1599
|
|
|
1600
|
|
|
1601 // Constant pool access //////////////////////////////////////////////////////////
|
|
|
1602
|
|
|
1603 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls))
|
|
|
1604 {
|
|
|
1605 JVMWrapper("JVM_GetClassConstantPool");
|
|
|
1606 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1607
|
|
|
1608 // Return null for primitives and arrays
|
|
|
1609 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
|
|
|
1610 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1611 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
1612 instanceKlassHandle k_h(THREAD, k);
|
|
|
1613 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL);
|
|
|
1614 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants());
|
|
|
1615 return JNIHandles::make_local(jcp());
|
|
|
1616 }
|
|
|
1617 }
|
|
|
1618 return NULL;
|
|
|
1619 }
|
|
|
1620 JVM_END
|
|
|
1621
|
|
|
1622
|
|
|
1623 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool))
|
|
|
1624 {
|
|
|
1625 JVMWrapper("JVM_ConstantPoolGetSize");
|
|
|
1626 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1627 return cp->length();
|
|
|
1628 }
|
|
|
1629 JVM_END
|
|
|
1630
|
|
|
1631
|
|
|
1632 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) {
|
|
|
1633 if (!cp->is_within_bounds(index)) {
|
|
|
1634 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds");
|
|
|
1635 }
|
|
|
1636 }
|
|
|
1637
|
|
|
1638
|
|
|
1639 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1640 {
|
|
|
1641 JVMWrapper("JVM_ConstantPoolGetClassAt");
|
|
|
1642 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1643 bounds_check(cp, index, CHECK_NULL);
|
|
|
1644 constantTag tag = cp->tag_at(index);
|
|
|
1645 if (!tag.is_klass() && !tag.is_unresolved_klass()) {
|
|
|
1646 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1647 }
|
|
|
1648 klassOop k = cp->klass_at(index, CHECK_NULL);
|
|
|
1649 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror());
|
|
|
1650 }
|
|
|
1651 JVM_END
|
|
|
1652
|
|
|
1653
|
|
|
1654 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1655 {
|
|
|
1656 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded");
|
|
|
1657 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1658 bounds_check(cp, index, CHECK_NULL);
|
|
|
1659 constantTag tag = cp->tag_at(index);
|
|
|
1660 if (!tag.is_klass() && !tag.is_unresolved_klass()) {
|
|
|
1661 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1662 }
|
|
|
1663 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index);
|
|
|
1664 if (k == NULL) return NULL;
|
|
|
1665 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror());
|
|
|
1666 }
|
|
|
1667 JVM_END
|
|
|
1668
|
|
|
1669 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) {
|
|
|
1670 constantTag tag = cp->tag_at(index);
|
|
|
1671 if (!tag.is_method() && !tag.is_interface_method()) {
|
|
|
1672 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1673 }
|
|
|
1674 int klass_ref = cp->uncached_klass_ref_index_at(index);
|
|
|
1675 klassOop k_o;
|
|
|
1676 if (force_resolution) {
|
|
|
1677 k_o = cp->klass_at(klass_ref, CHECK_NULL);
|
|
|
1678 } else {
|
|
|
1679 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref);
|
|
|
1680 if (k_o == NULL) return NULL;
|
|
|
1681 }
|
|
|
1682 instanceKlassHandle k(THREAD, k_o);
|
|
|
1683 symbolOop name = cp->uncached_name_ref_at(index);
|
|
|
1684 symbolOop sig = cp->uncached_signature_ref_at(index);
|
|
|
1685 methodHandle m (THREAD, k->find_method(name, sig));
|
|
|
1686 if (m.is_null()) {
|
|
|
1687 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class");
|
|
|
1688 }
|
|
|
1689 oop method;
|
|
|
1690 if (!m->is_initializer() || m->is_static()) {
|
|
|
1691 method = Reflection::new_method(m, true, true, CHECK_NULL);
|
|
|
1692 } else {
|
|
|
1693 method = Reflection::new_constructor(m, CHECK_NULL);
|
|
|
1694 }
|
|
|
1695 return JNIHandles::make_local(method);
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1699 {
|
|
|
1700 JVMWrapper("JVM_ConstantPoolGetMethodAt");
|
|
|
1701 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1702 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1703 bounds_check(cp, index, CHECK_NULL);
|
|
|
1704 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL);
|
|
|
1705 return res;
|
|
|
1706 }
|
|
|
1707 JVM_END
|
|
|
1708
|
|
|
1709 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1710 {
|
|
|
1711 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded");
|
|
|
1712 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1713 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1714 bounds_check(cp, index, CHECK_NULL);
|
|
|
1715 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL);
|
|
|
1716 return res;
|
|
|
1717 }
|
|
|
1718 JVM_END
|
|
|
1719
|
|
|
1720 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) {
|
|
|
1721 constantTag tag = cp->tag_at(index);
|
|
|
1722 if (!tag.is_field()) {
|
|
|
1723 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1724 }
|
|
|
1725 int klass_ref = cp->uncached_klass_ref_index_at(index);
|
|
|
1726 klassOop k_o;
|
|
|
1727 if (force_resolution) {
|
|
|
1728 k_o = cp->klass_at(klass_ref, CHECK_NULL);
|
|
|
1729 } else {
|
|
|
1730 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref);
|
|
|
1731 if (k_o == NULL) return NULL;
|
|
|
1732 }
|
|
|
1733 instanceKlassHandle k(THREAD, k_o);
|
|
|
1734 symbolOop name = cp->uncached_name_ref_at(index);
|
|
|
1735 symbolOop sig = cp->uncached_signature_ref_at(index);
|
|
|
1736 fieldDescriptor fd;
|
|
|
1737 klassOop target_klass = k->find_field(name, sig, &fd);
|
|
|
1738 if (target_klass == NULL) {
|
|
|
1739 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class");
|
|
|
1740 }
|
|
|
1741 oop field = Reflection::new_field(&fd, true, CHECK_NULL);
|
|
|
1742 return JNIHandles::make_local(field);
|
|
|
1743 }
|
|
|
1744
|
|
|
1745 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1746 {
|
|
|
1747 JVMWrapper("JVM_ConstantPoolGetFieldAt");
|
|
|
1748 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1749 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1750 bounds_check(cp, index, CHECK_NULL);
|
|
|
1751 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL);
|
|
|
1752 return res;
|
|
|
1753 }
|
|
|
1754 JVM_END
|
|
|
1755
|
|
|
1756 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1757 {
|
|
|
1758 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded");
|
|
|
1759 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1760 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1761 bounds_check(cp, index, CHECK_NULL);
|
|
|
1762 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL);
|
|
|
1763 return res;
|
|
|
1764 }
|
|
|
1765 JVM_END
|
|
|
1766
|
|
|
1767 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1768 {
|
|
|
1769 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt");
|
|
|
1770 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1771 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1772 bounds_check(cp, index, CHECK_NULL);
|
|
|
1773 constantTag tag = cp->tag_at(index);
|
|
|
1774 if (!tag.is_field_or_method()) {
|
|
|
1775 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1776 }
|
|
|
1777 int klass_ref = cp->uncached_klass_ref_index_at(index);
|
|
|
1778 symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref));
|
|
|
1779 symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index));
|
|
|
1780 symbolHandle member_sig (THREAD, cp->uncached_signature_ref_at(index));
|
|
|
1781 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::string_klass(), 3, CHECK_NULL);
|
|
|
1782 objArrayHandle dest(THREAD, dest_o);
|
|
|
1783 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL);
|
|
|
1784 dest->obj_at_put(0, str());
|
|
|
1785 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
|
|
|
1786 dest->obj_at_put(1, str());
|
|
|
1787 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
|
|
|
1788 dest->obj_at_put(2, str());
|
|
|
1789 return (jobjectArray) JNIHandles::make_local(dest());
|
|
|
1790 }
|
|
|
1791 JVM_END
|
|
|
1792
|
|
|
1793 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1794 {
|
|
|
1795 JVMWrapper("JVM_ConstantPoolGetIntAt");
|
|
|
1796 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1797 bounds_check(cp, index, CHECK_0);
|
|
|
1798 constantTag tag = cp->tag_at(index);
|
|
|
1799 if (!tag.is_int()) {
|
|
|
1800 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1801 }
|
|
|
1802 return cp->int_at(index);
|
|
|
1803 }
|
|
|
1804 JVM_END
|
|
|
1805
|
|
|
1806 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1807 {
|
|
|
1808 JVMWrapper("JVM_ConstantPoolGetLongAt");
|
|
|
1809 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1810 bounds_check(cp, index, CHECK_(0L));
|
|
|
1811 constantTag tag = cp->tag_at(index);
|
|
|
1812 if (!tag.is_long()) {
|
|
|
1813 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1814 }
|
|
|
1815 return cp->long_at(index);
|
|
|
1816 }
|
|
|
1817 JVM_END
|
|
|
1818
|
|
|
1819 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1820 {
|
|
|
1821 JVMWrapper("JVM_ConstantPoolGetFloatAt");
|
|
|
1822 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1823 bounds_check(cp, index, CHECK_(0.0f));
|
|
|
1824 constantTag tag = cp->tag_at(index);
|
|
|
1825 if (!tag.is_float()) {
|
|
|
1826 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1827 }
|
|
|
1828 return cp->float_at(index);
|
|
|
1829 }
|
|
|
1830 JVM_END
|
|
|
1831
|
|
|
1832 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1833 {
|
|
|
1834 JVMWrapper("JVM_ConstantPoolGetDoubleAt");
|
|
|
1835 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1836 bounds_check(cp, index, CHECK_(0.0));
|
|
|
1837 constantTag tag = cp->tag_at(index);
|
|
|
1838 if (!tag.is_double()) {
|
|
|
1839 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1840 }
|
|
|
1841 return cp->double_at(index);
|
|
|
1842 }
|
|
|
1843 JVM_END
|
|
|
1844
|
|
|
1845 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1846 {
|
|
|
1847 JVMWrapper("JVM_ConstantPoolGetStringAt");
|
|
|
1848 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1849 bounds_check(cp, index, CHECK_NULL);
|
|
|
1850 constantTag tag = cp->tag_at(index);
|
|
|
1851 if (!tag.is_string() && !tag.is_unresolved_string()) {
|
|
|
1852 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1853 }
|
|
|
1854 oop str = cp->string_at(index, CHECK_NULL);
|
|
|
1855 return (jstring) JNIHandles::make_local(str);
|
|
|
1856 }
|
|
|
1857 JVM_END
|
|
|
1858
|
|
|
1859 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index))
|
|
|
1860 {
|
|
|
1861 JVMWrapper("JVM_ConstantPoolGetUTF8At");
|
|
|
1862 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1863 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool)));
|
|
|
1864 bounds_check(cp, index, CHECK_NULL);
|
|
|
1865 constantTag tag = cp->tag_at(index);
|
|
|
1866 if (!tag.is_symbol()) {
|
|
|
1867 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
|
|
|
1868 }
|
|
|
1869 symbolOop sym_o = cp->symbol_at(index);
|
|
|
1870 symbolHandle sym(THREAD, sym_o);
|
|
|
1871 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
|
|
|
1872 return (jstring) JNIHandles::make_local(str());
|
|
|
1873 }
|
|
|
1874 JVM_END
|
|
|
1875
|
|
|
1876
|
|
|
1877 // Assertion support. //////////////////////////////////////////////////////////
|
|
|
1878
|
|
|
1879 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls))
|
|
|
1880 JVMWrapper("JVM_DesiredAssertionStatus");
|
|
|
1881 assert(cls != NULL, "bad class");
|
|
|
1882
|
|
|
1883 oop r = JNIHandles::resolve(cls);
|
|
|
1884 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed");
|
|
|
1885 if (java_lang_Class::is_primitive(r)) return false;
|
|
|
1886
|
|
|
1887 klassOop k = java_lang_Class::as_klassOop(r);
|
|
|
1888 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass");
|
|
|
1889 if (! Klass::cast(k)->oop_is_instance()) return false;
|
|
|
1890
|
|
|
1891 ResourceMark rm(THREAD);
|
|
|
1892 const char* name = Klass::cast(k)->name()->as_C_string();
|
|
|
1893 bool system_class = Klass::cast(k)->class_loader() == NULL;
|
|
|
1894 return JavaAssertions::enabled(name, system_class);
|
|
|
1895
|
|
|
1896 JVM_END
|
|
|
1897
|
|
|
1898
|
|
|
1899 // Return a new AssertionStatusDirectives object with the fields filled in with
|
|
|
1900 // command-line assertion arguments (i.e., -ea, -da).
|
|
|
1901 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused))
|
|
|
1902 JVMWrapper("JVM_AssertionStatusDirectives");
|
|
|
1903 JvmtiVMObjectAllocEventCollector oam;
|
|
|
1904 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL);
|
|
|
1905 return JNIHandles::make_local(env, asd);
|
|
|
1906 JVM_END
|
|
|
1907
|
|
|
1908 // Verification ////////////////////////////////////////////////////////////////////////////////
|
|
|
1909
|
|
|
1910 // Reflection for the verifier /////////////////////////////////////////////////////////////////
|
|
|
1911
|
|
|
1912 // RedefineClasses support: bug 6214132 caused verification to fail.
|
|
|
1913 // All functions from this section should call the jvmtiThreadSate function:
|
|
|
1914 // klassOop class_to_verify_considering_redefinition(klassOop klass).
|
|
|
1915 // The function returns a klassOop of the _scratch_class if the verifier
|
|
|
1916 // was invoked in the middle of the class redefinition.
|
|
|
1917 // Otherwise it returns its argument value which is the _the_class klassOop.
|
|
|
1918 // Please, refer to the description in the jvmtiThreadSate.hpp.
|
|
|
1919
|
|
|
1920 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls))
|
|
|
1921 JVMWrapper("JVM_GetClassNameUTF");
|
|
|
1922 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1923 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1924 return Klass::cast(k)->name()->as_utf8();
|
|
|
1925 JVM_END
|
|
|
1926
|
|
|
1927
|
|
|
1928 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types))
|
|
|
1929 JVMWrapper("JVM_GetClassCPTypes");
|
|
|
1930 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1931 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1932 // types will have length zero if this is not an instanceKlass
|
|
|
1933 // (length is determined by call to JVM_GetClassCPEntriesCount)
|
|
|
1934 if (Klass::cast(k)->oop_is_instance()) {
|
|
|
1935 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
1936 for (int index = cp->length() - 1; index >= 0; index--) {
|
|
|
1937 constantTag tag = cp->tag_at(index);
|
|
|
1938 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class :
|
|
|
1939 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value();
|
|
|
1940 }
|
|
|
1941 }
|
|
|
1942 JVM_END
|
|
|
1943
|
|
|
1944
|
|
|
1945 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls))
|
|
|
1946 JVMWrapper("JVM_GetClassCPEntriesCount");
|
|
|
1947 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1948 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1949 if (!Klass::cast(k)->oop_is_instance())
|
|
|
1950 return 0;
|
|
|
1951 return instanceKlass::cast(k)->constants()->length();
|
|
|
1952 JVM_END
|
|
|
1953
|
|
|
1954
|
|
|
1955 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls))
|
|
|
1956 JVMWrapper("JVM_GetClassFieldsCount");
|
|
|
1957 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1958 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1959 if (!Klass::cast(k)->oop_is_instance())
|
|
|
1960 return 0;
|
|
|
1961 return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset;
|
|
|
1962 JVM_END
|
|
|
1963
|
|
|
1964
|
|
|
1965 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls))
|
|
|
1966 JVMWrapper("JVM_GetClassMethodsCount");
|
|
|
1967 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1968 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1969 if (!Klass::cast(k)->oop_is_instance())
|
|
|
1970 return 0;
|
|
|
1971 return instanceKlass::cast(k)->methods()->length();
|
|
|
1972 JVM_END
|
|
|
1973
|
|
|
1974
|
|
|
1975 // The following methods, used for the verifier, are never called with
|
|
|
1976 // array klasses, so a direct cast to instanceKlass is safe.
|
|
|
1977 // Typically, these methods are called in a loop with bounds determined
|
|
|
1978 // by the results of JVM_GetClass{Fields,Methods}Count, which return
|
|
|
1979 // zero for arrays.
|
|
|
1980 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions))
|
|
|
1981 JVMWrapper("JVM_GetMethodIxExceptionIndexes");
|
|
|
1982 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1983 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1984 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
1985 int length = methodOop(method)->checked_exceptions_length();
|
|
|
1986 if (length > 0) {
|
|
|
1987 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start();
|
|
|
1988 for (int i = 0; i < length; i++) {
|
|
|
1989 exceptions[i] = table[i].class_cp_index;
|
|
|
1990 }
|
|
|
1991 }
|
|
|
1992 JVM_END
|
|
|
1993
|
|
|
1994
|
|
|
1995 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index))
|
|
|
1996 JVMWrapper("JVM_GetMethodIxExceptionsCount");
|
|
|
1997 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
1998 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
1999 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2000 return methodOop(method)->checked_exceptions_length();
|
|
|
2001 JVM_END
|
|
|
2002
|
|
|
2003
|
|
|
2004 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code))
|
|
|
2005 JVMWrapper("JVM_GetMethodIxByteCode");
|
|
|
2006 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2007 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2008 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2009 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size());
|
|
|
2010 JVM_END
|
|
|
2011
|
|
|
2012
|
|
|
2013 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index))
|
|
|
2014 JVMWrapper("JVM_GetMethodIxByteCodeLength");
|
|
|
2015 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2016 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2017 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2018 return methodOop(method)->code_size();
|
|
|
2019 JVM_END
|
|
|
2020
|
|
|
2021
|
|
|
2022 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry))
|
|
|
2023 JVMWrapper("JVM_GetMethodIxExceptionTableEntry");
|
|
|
2024 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2025 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2026 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2027 typeArrayOop extable = methodOop(method)->exception_table();
|
|
|
2028 entry->start_pc = extable->int_at(entry_index * 4);
|
|
|
2029 entry->end_pc = extable->int_at(entry_index * 4 + 1);
|
|
|
2030 entry->handler_pc = extable->int_at(entry_index * 4 + 2);
|
|
|
2031 entry->catchType = extable->int_at(entry_index * 4 + 3);
|
|
|
2032 JVM_END
|
|
|
2033
|
|
|
2034
|
|
|
2035 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index))
|
|
|
2036 JVMWrapper("JVM_GetMethodIxExceptionTableLength");
|
|
|
2037 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2038 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2039 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2040 return methodOop(method)->exception_table()->length() / 4;
|
|
|
2041 JVM_END
|
|
|
2042
|
|
|
2043
|
|
|
2044 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index))
|
|
|
2045 JVMWrapper("JVM_GetMethodIxModifiers");
|
|
|
2046 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2047 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2048 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2049 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
|
|
|
2050 JVM_END
|
|
|
2051
|
|
|
2052
|
|
|
2053 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index))
|
|
|
2054 JVMWrapper("JVM_GetFieldIxModifiers");
|
|
|
2055 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2056 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2057 typeArrayOop fields = instanceKlass::cast(k)->fields();
|
|
|
2058 return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
|
2059 JVM_END
|
|
|
2060
|
|
|
2061
|
|
|
2062 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index))
|
|
|
2063 JVMWrapper("JVM_GetMethodIxLocalsCount");
|
|
|
2064 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2065 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2066 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2067 return methodOop(method)->max_locals();
|
|
|
2068 JVM_END
|
|
|
2069
|
|
|
2070
|
|
|
2071 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index))
|
|
|
2072 JVMWrapper("JVM_GetMethodIxArgsSize");
|
|
|
2073 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2074 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2075 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2076 return methodOop(method)->size_of_parameters();
|
|
|
2077 JVM_END
|
|
|
2078
|
|
|
2079
|
|
|
2080 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index))
|
|
|
2081 JVMWrapper("JVM_GetMethodIxMaxStack");
|
|
|
2082 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2083 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2084 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2085 return methodOop(method)->max_stack();
|
|
|
2086 JVM_END
|
|
|
2087
|
|
|
2088
|
|
|
2089 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index))
|
|
|
2090 JVMWrapper("JVM_IsConstructorIx");
|
|
|
2091 ResourceMark rm(THREAD);
|
|
|
2092 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2093 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2094 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2095 return methodOop(method)->name() == vmSymbols::object_initializer_name();
|
|
|
2096 JVM_END
|
|
|
2097
|
|
|
2098
|
|
|
2099 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index))
|
|
|
2100 JVMWrapper("JVM_GetMethodIxIxUTF");
|
|
|
2101 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2102 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2103 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2104 return methodOop(method)->name()->as_utf8();
|
|
|
2105 JVM_END
|
|
|
2106
|
|
|
2107
|
|
|
2108 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index))
|
|
|
2109 JVMWrapper("JVM_GetMethodIxSignatureUTF");
|
|
|
2110 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2111 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2112 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index);
|
|
|
2113 return methodOop(method)->signature()->as_utf8();
|
|
|
2114 JVM_END
|
|
|
2115
|
|
|
2116 /**
|
|
|
2117 * All of these JVM_GetCP-xxx methods are used by the old verifier to
|
|
|
2118 * read entries in the constant pool. Since the old verifier always
|
|
|
2119 * works on a copy of the code, it will not see any rewriting that
|
|
|
2120 * may possibly occur in the middle of verification. So it is important
|
|
|
2121 * that nothing it calls tries to use the cpCache instead of the raw
|
|
|
2122 * constant pool, so we must use cp->uncached_x methods when appropriate.
|
|
|
2123 */
|
|
|
2124 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2125 JVMWrapper("JVM_GetCPFieldNameUTF");
|
|
|
2126 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2127 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2128 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2129 switch (cp->tag_at(cp_index).value()) {
|
|
|
2130 case JVM_CONSTANT_Fieldref:
|
|
|
2131 return cp->uncached_name_ref_at(cp_index)->as_utf8();
|
|
|
2132 default:
|
|
|
2133 fatal("JVM_GetCPFieldNameUTF: illegal constant");
|
|
|
2134 }
|
|
|
2135 ShouldNotReachHere();
|
|
|
2136 return NULL;
|
|
|
2137 JVM_END
|
|
|
2138
|
|
|
2139
|
|
|
2140 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2141 JVMWrapper("JVM_GetCPMethodNameUTF");
|
|
|
2142 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2143 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2144 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2145 switch (cp->tag_at(cp_index).value()) {
|
|
|
2146 case JVM_CONSTANT_InterfaceMethodref:
|
|
|
2147 case JVM_CONSTANT_Methodref:
|
|
|
2148 return cp->uncached_name_ref_at(cp_index)->as_utf8();
|
|
|
2149 default:
|
|
|
2150 fatal("JVM_GetCPMethodNameUTF: illegal constant");
|
|
|
2151 }
|
|
|
2152 ShouldNotReachHere();
|
|
|
2153 return NULL;
|
|
|
2154 JVM_END
|
|
|
2155
|
|
|
2156
|
|
|
2157 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2158 JVMWrapper("JVM_GetCPMethodSignatureUTF");
|
|
|
2159 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2160 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2161 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2162 switch (cp->tag_at(cp_index).value()) {
|
|
|
2163 case JVM_CONSTANT_InterfaceMethodref:
|
|
|
2164 case JVM_CONSTANT_Methodref:
|
|
|
2165 return cp->uncached_signature_ref_at(cp_index)->as_utf8();
|
|
|
2166 default:
|
|
|
2167 fatal("JVM_GetCPMethodSignatureUTF: illegal constant");
|
|
|
2168 }
|
|
|
2169 ShouldNotReachHere();
|
|
|
2170 return NULL;
|
|
|
2171 JVM_END
|
|
|
2172
|
|
|
2173
|
|
|
2174 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2175 JVMWrapper("JVM_GetCPFieldSignatureUTF");
|
|
|
2176 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2177 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2178 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2179 switch (cp->tag_at(cp_index).value()) {
|
|
|
2180 case JVM_CONSTANT_Fieldref:
|
|
|
2181 return cp->uncached_signature_ref_at(cp_index)->as_utf8();
|
|
|
2182 default:
|
|
|
2183 fatal("JVM_GetCPFieldSignatureUTF: illegal constant");
|
|
|
2184 }
|
|
|
2185 ShouldNotReachHere();
|
|
|
2186 return NULL;
|
|
|
2187 JVM_END
|
|
|
2188
|
|
|
2189
|
|
|
2190 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2191 JVMWrapper("JVM_GetCPClassNameUTF");
|
|
|
2192 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2193 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2194 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2195 symbolOop classname = cp->klass_name_at(cp_index);
|
|
|
2196 return classname->as_utf8();
|
|
|
2197 JVM_END
|
|
|
2198
|
|
|
2199
|
|
|
2200 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2201 JVMWrapper("JVM_GetCPFieldClassNameUTF");
|
|
|
2202 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2203 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2204 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2205 switch (cp->tag_at(cp_index).value()) {
|
|
|
2206 case JVM_CONSTANT_Fieldref: {
|
|
|
2207 int class_index = cp->uncached_klass_ref_index_at(cp_index);
|
|
|
2208 symbolOop classname = cp->klass_name_at(class_index);
|
|
|
2209 return classname->as_utf8();
|
|
|
2210 }
|
|
|
2211 default:
|
|
|
2212 fatal("JVM_GetCPFieldClassNameUTF: illegal constant");
|
|
|
2213 }
|
|
|
2214 ShouldNotReachHere();
|
|
|
2215 return NULL;
|
|
|
2216 JVM_END
|
|
|
2217
|
|
|
2218
|
|
|
2219 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
|
|
|
2220 JVMWrapper("JVM_GetCPMethodClassNameUTF");
|
|
|
2221 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2222 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2223 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2224 switch (cp->tag_at(cp_index).value()) {
|
|
|
2225 case JVM_CONSTANT_Methodref:
|
|
|
2226 case JVM_CONSTANT_InterfaceMethodref: {
|
|
|
2227 int class_index = cp->uncached_klass_ref_index_at(cp_index);
|
|
|
2228 symbolOop classname = cp->klass_name_at(class_index);
|
|
|
2229 return classname->as_utf8();
|
|
|
2230 }
|
|
|
2231 default:
|
|
|
2232 fatal("JVM_GetCPMethodClassNameUTF: illegal constant");
|
|
|
2233 }
|
|
|
2234 ShouldNotReachHere();
|
|
|
2235 return NULL;
|
|
|
2236 JVM_END
|
|
|
2237
|
|
|
2238
|
|
|
2239 JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
|
|
|
2240 JVMWrapper("JVM_GetCPFieldModifiers");
|
|
|
2241 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2242 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls));
|
|
|
2243 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2244 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
|
|
|
2245 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2246 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants();
|
|
|
2247 switch (cp->tag_at(cp_index).value()) {
|
|
|
2248 case JVM_CONSTANT_Fieldref: {
|
|
|
2249 symbolOop name = cp->uncached_name_ref_at(cp_index);
|
|
|
2250 symbolOop signature = cp->uncached_signature_ref_at(cp_index);
|
|
|
2251 typeArrayOop fields = instanceKlass::cast(k_called)->fields();
|
|
|
2252 int fields_count = fields->length();
|
|
|
2253 for (int i = 0; i < fields_count; i += instanceKlass::next_offset) {
|
|
|
2254 if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name &&
|
|
|
2255 cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) {
|
|
|
2256 return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
|
2257 }
|
|
|
2258 }
|
|
|
2259 return -1;
|
|
|
2260 }
|
|
|
2261 default:
|
|
|
2262 fatal("JVM_GetCPFieldModifiers: illegal constant");
|
|
|
2263 }
|
|
|
2264 ShouldNotReachHere();
|
|
|
2265 return 0;
|
|
|
2266 JVM_END
|
|
|
2267
|
|
|
2268
|
|
|
2269 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
|
|
|
2270 JVMWrapper("JVM_GetCPMethodModifiers");
|
|
|
2271 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
|
2272 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls));
|
|
|
2273 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
|
|
|
2274 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
|
|
|
2275 constantPoolOop cp = instanceKlass::cast(k)->constants();
|
|
|
2276 switch (cp->tag_at(cp_index).value()) {
|
|
|
2277 case JVM_CONSTANT_Methodref:
|
|
|
2278 case JVM_CONSTANT_InterfaceMethodref: {
|
|
|
2279 symbolOop name = cp->uncached_name_ref_at(cp_index);
|
|
|
2280 symbolOop signature = cp->uncached_signature_ref_at(cp_index);
|
|
|
2281 objArrayOop methods = instanceKlass::cast(k_called)->methods();
|
|
|
2282 int methods_count = methods->length();
|
|
|
2283 for (int i = 0; i < methods_count; i++) {
|
|
|
2284 methodOop method = methodOop(methods->obj_at(i));
|
|
|
2285 if (method->name() == name && method->signature() == signature) {
|
|
|
2286 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
|
|
|
2287 }
|
|
|
2288 }
|
|
|
2289 return -1;
|
|
|
2290 }
|
|
|
2291 default:
|
|
|
2292 fatal("JVM_GetCPMethodModifiers: illegal constant");
|
|
|
2293 }
|
|
|
2294 ShouldNotReachHere();
|
|
|
2295 return 0;
|
|
|
2296 JVM_END
|
|
|
2297
|
|
|
2298
|
|
|
2299 // Misc //////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
2300
|
|
|
2301 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf))
|
|
|
2302 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything
|
|
|
2303 JVM_END
|
|
|
2304
|
|
|
2305
|
|
|
2306 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2))
|
|
|
2307 JVMWrapper("JVM_IsSameClassPackage");
|
|
|
2308 oop class1_mirror = JNIHandles::resolve_non_null(class1);
|
|
|
2309 oop class2_mirror = JNIHandles::resolve_non_null(class2);
|
|
|
2310 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror);
|
|
|
2311 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror);
|
|
|
2312 return (jboolean) Reflection::is_same_class_package(klass1, klass2);
|
|
|
2313 JVM_END
|
|
|
2314
|
|
|
2315
|
|
|
2316 // IO functions ////////////////////////////////////////////////////////////////////////////////////////
|
|
|
2317
|
|
|
2318 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode))
|
|
|
2319 JVMWrapper2("JVM_Open (%s)", fname);
|
|
|
2320
|
|
|
2321 //%note jvm_r6
|
|
|
2322 int result = hpi::open(fname, flags, mode);
|
|
|
2323 if (result >= 0) {
|
|
|
2324 return result;
|
|
|
2325 } else {
|
|
|
2326 switch(errno) {
|
|
|
2327 case EEXIST:
|
|
|
2328 return JVM_EEXIST;
|
|
|
2329 default:
|
|
|
2330 return -1;
|
|
|
2331 }
|
|
|
2332 }
|
|
|
2333 JVM_END
|
|
|
2334
|
|
|
2335
|
|
|
2336 JVM_LEAF(jint, JVM_Close(jint fd))
|
|
|
2337 JVMWrapper2("JVM_Close (0x%x)", fd);
|
|
|
2338 //%note jvm_r6
|
|
|
2339 return hpi::close(fd);
|
|
|
2340 JVM_END
|
|
|
2341
|
|
|
2342
|
|
|
2343 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes))
|
|
|
2344 JVMWrapper2("JVM_Read (0x%x)", fd);
|
|
|
2345
|
|
|
2346 //%note jvm_r6
|
|
|
2347 return (jint)hpi::read(fd, buf, nbytes);
|
|
|
2348 JVM_END
|
|
|
2349
|
|
|
2350
|
|
|
2351 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes))
|
|
|
2352 JVMWrapper2("JVM_Write (0x%x)", fd);
|
|
|
2353
|
|
|
2354 //%note jvm_r6
|
|
|
2355 return (jint)hpi::write(fd, buf, nbytes);
|
|
|
2356 JVM_END
|
|
|
2357
|
|
|
2358
|
|
|
2359 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes))
|
|
|
2360 JVMWrapper2("JVM_Available (0x%x)", fd);
|
|
|
2361 //%note jvm_r6
|
|
|
2362 return hpi::available(fd, pbytes);
|
|
|
2363 JVM_END
|
|
|
2364
|
|
|
2365
|
|
|
2366 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence))
|
|
|
2367 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence);
|
|
|
2368 //%note jvm_r6
|
|
|
2369 return hpi::lseek(fd, offset, whence);
|
|
|
2370 JVM_END
|
|
|
2371
|
|
|
2372
|
|
|
2373 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length))
|
|
|
2374 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length);
|
|
|
2375 return hpi::ftruncate(fd, length);
|
|
|
2376 JVM_END
|
|
|
2377
|
|
|
2378
|
|
|
2379 JVM_LEAF(jint, JVM_Sync(jint fd))
|
|
|
2380 JVMWrapper2("JVM_Sync (0x%x)", fd);
|
|
|
2381 //%note jvm_r6
|
|
|
2382 return hpi::fsync(fd);
|
|
|
2383 JVM_END
|
|
|
2384
|
|
|
2385
|
|
|
2386 // Printing support //////////////////////////////////////////////////
|
|
|
2387 extern "C" {
|
|
|
2388
|
|
|
2389 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) {
|
|
|
2390 // see bug 4399518, 4417214
|
|
|
2391 if ((intptr_t)count <= 0) return -1;
|
|
|
2392 return vsnprintf(str, count, fmt, args);
|
|
|
2393 }
|
|
|
2394
|
|
|
2395
|
|
|
2396 int jio_snprintf(char *str, size_t count, const char *fmt, ...) {
|
|
|
2397 va_list args;
|
|
|
2398 int len;
|
|
|
2399 va_start(args, fmt);
|
|
|
2400 len = jio_vsnprintf(str, count, fmt, args);
|
|
|
2401 va_end(args);
|
|
|
2402 return len;
|
|
|
2403 }
|
|
|
2404
|
|
|
2405
|
|
|
2406 int jio_fprintf(FILE* f, const char *fmt, ...) {
|
|
|
2407 int len;
|
|
|
2408 va_list args;
|
|
|
2409 va_start(args, fmt);
|
|
|
2410 len = jio_vfprintf(f, fmt, args);
|
|
|
2411 va_end(args);
|
|
|
2412 return len;
|
|
|
2413 }
|
|
|
2414
|
|
|
2415
|
|
|
2416 int jio_vfprintf(FILE* f, const char *fmt, va_list args) {
|
|
|
2417 if (Arguments::vfprintf_hook() != NULL) {
|
|
|
2418 return Arguments::vfprintf_hook()(f, fmt, args);
|
|
|
2419 } else {
|
|
|
2420 return vfprintf(f, fmt, args);
|
|
|
2421 }
|
|
|
2422 }
|
|
|
2423
|
|
|
2424
|
|
|
2425 int jio_printf(const char *fmt, ...) {
|
|
|
2426 int len;
|
|
|
2427 va_list args;
|
|
|
2428 va_start(args, fmt);
|
|
|
2429 len = jio_vfprintf(defaultStream::output_stream(), fmt, args);
|
|
|
2430 va_end(args);
|
|
|
2431 return len;
|
|
|
2432 }
|
|
|
2433
|
|
|
2434
|
|
|
2435 // HotSpot specific jio method
|
|
|
2436 void jio_print(const char* s) {
|
|
|
2437 // Try to make this function as atomic as possible.
|
|
|
2438 if (Arguments::vfprintf_hook() != NULL) {
|
|
|
2439 jio_fprintf(defaultStream::output_stream(), "%s", s);
|
|
|
2440 } else {
|
|
|
2441 ::write(defaultStream::output_fd(), s, (int)strlen(s));
|
|
|
2442 }
|
|
|
2443 }
|
|
|
2444
|
|
|
2445 } // Extern C
|
|
|
2446
|
|
|
2447 // java.lang.Thread //////////////////////////////////////////////////////////////////////////////
|
|
|
2448
|
|
|
2449 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock
|
|
|
2450 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or
|
|
|
2451 // OSThread objects. The exception to this rule is when the target object is the thread
|
|
|
2452 // doing the operation, in which case we know that the thread won't exit until the
|
|
|
2453 // operation is done (all exits being voluntary). There are a few cases where it is
|
|
|
2454 // rather silly to do operations on yourself, like resuming yourself or asking whether
|
|
|
2455 // you are alive. While these can still happen, they are not subject to deadlocks if
|
|
|
2456 // the lock is held while the operation occurs (this is not the case for suspend, for
|
|
|
2457 // instance), and are very unlikely. Because IsAlive needs to be fast and its
|
|
|
2458 // implementation is local to this file, we always lock Threads_lock for that one.
|
|
|
2459
|
|
|
2460 static void thread_entry(JavaThread* thread, TRAPS) {
|
|
|
2461 HandleMark hm(THREAD);
|
|
|
2462 Handle obj(THREAD, thread->threadObj());
|
|
|
2463 JavaValue result(T_VOID);
|
|
|
2464 JavaCalls::call_virtual(&result,
|
|
|
2465 obj,
|
|
|
2466 KlassHandle(THREAD, SystemDictionary::thread_klass()),
|
|
|
2467 vmSymbolHandles::run_method_name(),
|
|
|
2468 vmSymbolHandles::void_method_signature(),
|
|
|
2469 THREAD);
|
|
|
2470 }
|
|
|
2471
|
|
|
2472
|
|
|
2473 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread))
|
|
|
2474 JVMWrapper("JVM_StartThread");
|
|
|
2475 JavaThread *native_thread = NULL;
|
|
|
2476
|
|
|
2477 // We cannot hold the Threads_lock when we throw an exception,
|
|
|
2478 // due to rank ordering issues. Example: we might need to grab the
|
|
|
2479 // Heap_lock while we construct the exception.
|
|
|
2480 bool throw_illegal_thread_state = false;
|
|
|
2481
|
|
|
2482 // We must release the Threads_lock before we can post a jvmti event
|
|
|
2483 // in Thread::start.
|
|
|
2484 {
|
|
|
2485 // Ensure that the C++ Thread and OSThread structures aren't freed before
|
|
|
2486 // we operate.
|
|
|
2487 MutexLocker mu(Threads_lock);
|
|
|
2488
|
|
|
2489 // Check to see if we're running a thread that's already exited or was
|
|
|
2490 // stopped (is_stillborn) or is still active (thread is not NULL).
|
|
|
2491 if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) ||
|
|
|
2492 java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) {
|
|
|
2493 throw_illegal_thread_state = true;
|
|
|
2494 } else {
|
|
|
2495 jlong size =
|
|
|
2496 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread));
|
|
|
2497 // Allocate the C++ Thread structure and create the native thread. The
|
|
|
2498 // stack size retrieved from java is signed, but the constructor takes
|
|
|
2499 // size_t (an unsigned type), so avoid passing negative values which would
|
|
|
2500 // result in really large stacks.
|
|
|
2501 size_t sz = size > 0 ? (size_t) size : 0;
|
|
|
2502 native_thread = new JavaThread(&thread_entry, sz);
|
|
|
2503
|
|
|
2504 // At this point it may be possible that no osthread was created for the
|
|
|
2505 // JavaThread due to lack of memory. Check for this situation and throw
|
|
|
2506 // an exception if necessary. Eventually we may want to change this so
|
|
|
2507 // that we only grab the lock if the thread was created successfully -
|
|
|
2508 // then we can also do this check and throw the exception in the
|
|
|
2509 // JavaThread constructor.
|
|
|
2510 if (native_thread->osthread() != NULL) {
|
|
|
2511 // Note: the current thread is not being used within "prepare".
|
|
|
2512 native_thread->prepare(jthread);
|
|
|
2513 }
|
|
|
2514 }
|
|
|
2515 }
|
|
|
2516
|
|
|
2517 if (throw_illegal_thread_state) {
|
|
|
2518 THROW(vmSymbols::java_lang_IllegalThreadStateException());
|
|
|
2519 }
|
|
|
2520
|
|
|
2521 assert(native_thread != NULL, "Starting null thread?");
|
|
|
2522
|
|
|
2523 if (native_thread->osthread() == NULL) {
|
|
|
2524 // No one should hold a reference to the 'native_thread'.
|
|
|
2525 delete native_thread;
|
|
|
2526 if (JvmtiExport::should_post_resource_exhausted()) {
|
|
|
2527 JvmtiExport::post_resource_exhausted(
|
|
|
2528 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS,
|
|
|
2529 "unable to create new native thread");
|
|
|
2530 }
|
|
|
2531 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(),
|
|
|
2532 "unable to create new native thread");
|
|
|
2533 }
|
|
|
2534
|
|
|
2535 Thread::start(native_thread);
|
|
|
2536
|
|
|
2537 JVM_END
|
|
|
2538
|
|
|
2539 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints
|
|
|
2540 // before the quasi-asynchronous exception is delivered. This is a little obtrusive,
|
|
|
2541 // but is thought to be reliable and simple. In the case, where the receiver is the
|
|
|
2542 // save thread as the sender, no safepoint is needed.
|
|
|
2543 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable))
|
|
|
2544 JVMWrapper("JVM_StopThread");
|
|
|
2545
|
|
|
2546 oop java_throwable = JNIHandles::resolve(throwable);
|
|
|
2547 if (java_throwable == NULL) {
|
|
|
2548 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
2549 }
|
|
|
2550 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2551 JavaThread* receiver = java_lang_Thread::thread(java_thread);
|
|
|
2552 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable);
|
|
|
2553 // First check if thread already exited
|
|
|
2554 if (receiver != NULL) {
|
|
|
2555 // Check if exception is getting thrown at self (use oop equality, since the
|
|
|
2556 // target object might exit)
|
|
|
2557 if (java_thread == thread->threadObj()) {
|
|
|
2558 // This is a change from JDK 1.1, but JDK 1.2 will also do it:
|
|
|
2559 // NOTE (from JDK 1.2): this is done solely to prevent stopped
|
|
|
2560 // threads from being restarted.
|
|
|
2561 // Fix for 4314342, 4145910, perhaps others: it now doesn't have
|
|
|
2562 // any effect on the "liveness" of a thread; see
|
|
|
2563 // JVM_IsThreadAlive, below.
|
|
|
2564 if (java_throwable->is_a(SystemDictionary::threaddeath_klass())) {
|
|
|
2565 java_lang_Thread::set_stillborn(java_thread);
|
|
|
2566 }
|
|
|
2567 THROW_OOP(java_throwable);
|
|
|
2568 } else {
|
|
|
2569 // Enques a VM_Operation to stop all threads and then deliver the exception...
|
|
|
2570 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable));
|
|
|
2571 }
|
|
|
2572 }
|
|
|
2573 JVM_END
|
|
|
2574
|
|
|
2575
|
|
|
2576 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread))
|
|
|
2577 JVMWrapper("JVM_IsThreadAlive");
|
|
|
2578
|
|
|
2579 oop thread_oop = JNIHandles::resolve_non_null(jthread);
|
|
|
2580 return java_lang_Thread::is_alive(thread_oop);
|
|
|
2581 JVM_END
|
|
|
2582
|
|
|
2583
|
|
|
2584 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread))
|
|
|
2585 JVMWrapper("JVM_SuspendThread");
|
|
|
2586 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2587 JavaThread* receiver = java_lang_Thread::thread(java_thread);
|
|
|
2588
|
|
|
2589 if (receiver != NULL) {
|
|
|
2590 // thread has run and has not exited (still on threads list)
|
|
|
2591
|
|
|
2592 {
|
|
|
2593 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag);
|
|
|
2594 if (receiver->is_external_suspend()) {
|
|
|
2595 // Don't allow nested external suspend requests. We can't return
|
|
|
2596 // an error from this interface so just ignore the problem.
|
|
|
2597 return;
|
|
|
2598 }
|
|
|
2599 if (receiver->is_exiting()) { // thread is in the process of exiting
|
|
|
2600 return;
|
|
|
2601 }
|
|
|
2602 receiver->set_external_suspend();
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 // java_suspend() will catch threads in the process of exiting
|
|
|
2606 // and will ignore them.
|
|
|
2607 receiver->java_suspend();
|
|
|
2608
|
|
|
2609 // It would be nice to have the following assertion in all the
|
|
|
2610 // time, but it is possible for a racing resume request to have
|
|
|
2611 // resumed this thread right after we suspended it. Temporarily
|
|
|
2612 // enable this assertion if you are chasing a different kind of
|
|
|
2613 // bug.
|
|
|
2614 //
|
|
|
2615 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL ||
|
|
|
2616 // receiver->is_being_ext_suspended(), "thread is not suspended");
|
|
|
2617 }
|
|
|
2618 JVM_END
|
|
|
2619
|
|
|
2620
|
|
|
2621 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread))
|
|
|
2622 JVMWrapper("JVM_ResumeThread");
|
|
|
2623 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
|
|
|
2624 // We need to *always* get the threads lock here, since this operation cannot be allowed during
|
|
|
2625 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other
|
|
|
2626 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code
|
|
|
2627 // looks at it.
|
|
|
2628 MutexLocker ml(Threads_lock);
|
|
|
2629 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
|
|
|
2630 if (thr != NULL) {
|
|
|
2631 // the thread has run and is not in the process of exiting
|
|
|
2632 thr->java_resume();
|
|
|
2633 }
|
|
|
2634 JVM_END
|
|
|
2635
|
|
|
2636
|
|
|
2637 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio))
|
|
|
2638 JVMWrapper("JVM_SetThreadPriority");
|
|
|
2639 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
|
2640 MutexLocker ml(Threads_lock);
|
|
|
2641 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2642 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio);
|
|
|
2643 JavaThread* thr = java_lang_Thread::thread(java_thread);
|
|
|
2644 if (thr != NULL) { // Thread not yet started; priority pushed down when it is
|
|
|
2645 Thread::set_priority(thr, (ThreadPriority)prio);
|
|
|
2646 }
|
|
|
2647 JVM_END
|
|
|
2648
|
|
|
2649
|
|
|
2650 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass))
|
|
|
2651 JVMWrapper("JVM_Yield");
|
|
|
2652 if (os::dont_yield()) return;
|
|
|
2653 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield.
|
|
|
2654 // Critical for similar threading behaviour
|
|
|
2655 if (ConvertYieldToSleep) {
|
|
|
2656 os::sleep(thread, MinSleepInterval, false);
|
|
|
2657 } else {
|
|
|
2658 os::yield();
|
|
|
2659 }
|
|
|
2660 JVM_END
|
|
|
2661
|
|
|
2662
|
|
|
2663 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis))
|
|
|
2664 JVMWrapper("JVM_Sleep");
|
|
|
2665
|
|
|
2666 if (millis < 0) {
|
|
|
2667 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative");
|
|
|
2668 }
|
|
|
2669
|
|
|
2670 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) {
|
|
|
2671 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
|
|
|
2672 }
|
|
|
2673
|
|
|
2674 // Save current thread state and restore it at the end of this block.
|
|
|
2675 // And set new thread state to SLEEPING.
|
|
|
2676 JavaThreadSleepState jtss(thread);
|
|
|
2677
|
|
|
2678 if (millis == 0) {
|
|
|
2679 // When ConvertSleepToYield is on, this matches the classic VM implementation of
|
|
|
2680 // JVM_Sleep. Critical for similar threading behaviour (Win32)
|
|
|
2681 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep
|
|
|
2682 // for SOLARIS
|
|
|
2683 if (ConvertSleepToYield) {
|
|
|
2684 os::yield();
|
|
|
2685 } else {
|
|
|
2686 ThreadState old_state = thread->osthread()->get_state();
|
|
|
2687 thread->osthread()->set_state(SLEEPING);
|
|
|
2688 os::sleep(thread, MinSleepInterval, false);
|
|
|
2689 thread->osthread()->set_state(old_state);
|
|
|
2690 }
|
|
|
2691 } else {
|
|
|
2692 ThreadState old_state = thread->osthread()->get_state();
|
|
|
2693 thread->osthread()->set_state(SLEEPING);
|
|
|
2694 if (os::sleep(thread, millis, true) == OS_INTRPT) {
|
|
|
2695 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on
|
|
|
2696 // us while we were sleeping. We do not overwrite those.
|
|
|
2697 if (!HAS_PENDING_EXCEPTION) {
|
|
|
2698 // TODO-FIXME: THROW_MSG returns which means we will not call set_state()
|
|
|
2699 // to properly restore the thread state. That's likely wrong.
|
|
|
2700 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
|
|
|
2701 }
|
|
|
2702 }
|
|
|
2703 thread->osthread()->set_state(old_state);
|
|
|
2704 }
|
|
|
2705 JVM_END
|
|
|
2706
|
|
|
2707 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass))
|
|
|
2708 JVMWrapper("JVM_CurrentThread");
|
|
|
2709 oop jthread = thread->threadObj();
|
|
|
2710 assert (thread != NULL, "no current thread!");
|
|
|
2711 return JNIHandles::make_local(env, jthread);
|
|
|
2712 JVM_END
|
|
|
2713
|
|
|
2714
|
|
|
2715 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread))
|
|
|
2716 JVMWrapper("JVM_CountStackFrames");
|
|
|
2717
|
|
|
2718 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
|
2719 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2720 bool throw_illegal_thread_state = false;
|
|
|
2721 int count = 0;
|
|
|
2722
|
|
|
2723 {
|
|
|
2724 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
|
|
|
2725 // We need to re-resolve the java_thread, since a GC might have happened during the
|
|
|
2726 // acquire of the lock
|
|
|
2727 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
|
|
|
2728
|
|
|
2729 if (thr == NULL) {
|
|
|
2730 // do nothing
|
|
|
2731 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) {
|
|
|
2732 // Check whether this java thread has been suspended already. If not, throws
|
|
|
2733 // IllegalThreadStateException. We defer to throw that exception until
|
|
|
2734 // Threads_lock is released since loading exception class has to leave VM.
|
|
|
2735 // The correct way to test a thread is actually suspended is
|
|
|
2736 // wait_for_ext_suspend_completion(), but we can't call that while holding
|
|
|
2737 // the Threads_lock. The above tests are sufficient for our purposes
|
|
|
2738 // provided the walkability of the stack is stable - which it isn't
|
|
|
2739 // 100% but close enough for most practical purposes.
|
|
|
2740 throw_illegal_thread_state = true;
|
|
|
2741 } else {
|
|
|
2742 // Count all java activation, i.e., number of vframes
|
|
|
2743 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) {
|
|
|
2744 // Native frames are not counted
|
|
|
2745 if (!vfst.method()->is_native()) count++;
|
|
|
2746 }
|
|
|
2747 }
|
|
|
2748 }
|
|
|
2749
|
|
|
2750 if (throw_illegal_thread_state) {
|
|
|
2751 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(),
|
|
|
2752 "this thread is not suspended");
|
|
|
2753 }
|
|
|
2754 return count;
|
|
|
2755 JVM_END
|
|
|
2756
|
|
|
2757 // Consider: A better way to implement JVM_Interrupt() is to acquire
|
|
|
2758 // Threads_lock to resolve the jthread into a Thread pointer, fetch
|
|
|
2759 // Thread->platformevent, Thread->native_thr, Thread->parker, etc.,
|
|
|
2760 // drop Threads_lock, and the perform the unpark() and thr_kill() operations
|
|
|
2761 // outside the critical section. Threads_lock is hot so we want to minimize
|
|
|
2762 // the hold-time. A cleaner interface would be to decompose interrupt into
|
|
|
2763 // two steps. The 1st phase, performed under Threads_lock, would return
|
|
|
2764 // a closure that'd be invoked after Threads_lock was dropped.
|
|
|
2765 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and
|
|
|
2766 // admit spurious wakeups.
|
|
|
2767
|
|
|
2768 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread))
|
|
|
2769 JVMWrapper("JVM_Interrupt");
|
|
|
2770
|
|
|
2771 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
|
2772 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2773 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
|
|
|
2774 // We need to re-resolve the java_thread, since a GC might have happened during the
|
|
|
2775 // acquire of the lock
|
|
|
2776 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
|
|
|
2777 if (thr != NULL) {
|
|
|
2778 Thread::interrupt(thr);
|
|
|
2779 }
|
|
|
2780 JVM_END
|
|
|
2781
|
|
|
2782
|
|
|
2783 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted))
|
|
|
2784 JVMWrapper("JVM_IsInterrupted");
|
|
|
2785
|
|
|
2786 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
|
2787 oop java_thread = JNIHandles::resolve_non_null(jthread);
|
|
|
2788 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
|
|
|
2789 // We need to re-resolve the java_thread, since a GC might have happened during the
|
|
|
2790 // acquire of the lock
|
|
|
2791 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
|
|
|
2792 if (thr == NULL) {
|
|
|
2793 return JNI_FALSE;
|
|
|
2794 } else {
|
|
|
2795 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0);
|
|
|
2796 }
|
|
|
2797 JVM_END
|
|
|
2798
|
|
|
2799
|
|
|
2800 // Return true iff the current thread has locked the object passed in
|
|
|
2801
|
|
|
2802 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj))
|
|
|
2803 JVMWrapper("JVM_HoldsLock");
|
|
|
2804 assert(THREAD->is_Java_thread(), "sanity check");
|
|
|
2805 if (obj == NULL) {
|
|
|
2806 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
|
|
|
2807 }
|
|
|
2808 Handle h_obj(THREAD, JNIHandles::resolve(obj));
|
|
|
2809 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj);
|
|
|
2810 JVM_END
|
|
|
2811
|
|
|
2812
|
|
|
2813 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass))
|
|
|
2814 JVMWrapper("JVM_DumpAllStacks");
|
|
|
2815 VM_PrintThreads op;
|
|
|
2816 VMThread::execute(&op);
|
|
|
2817 if (JvmtiExport::should_post_data_dump()) {
|
|
|
2818 JvmtiExport::post_data_dump();
|
|
|
2819 }
|
|
|
2820 JVM_END
|
|
|
2821
|
|
|
2822
|
|
|
2823 // java.lang.SecurityManager ///////////////////////////////////////////////////////////////////////
|
|
|
2824
|
|
|
2825 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) {
|
|
|
2826 assert(jthread->is_Java_thread(), "must be a Java thread");
|
|
|
2827 if (jthread->privileged_stack_top() == NULL) return false;
|
|
|
2828 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) {
|
|
|
2829 oop loader = jthread->privileged_stack_top()->class_loader();
|
|
|
2830 if (loader == NULL) return true;
|
|
|
2831 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader);
|
|
|
2832 if (trusted) return true;
|
|
|
2833 }
|
|
|
2834 return false;
|
|
|
2835 }
|
|
|
2836
|
|
|
2837 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env))
|
|
|
2838 JVMWrapper("JVM_CurrentLoadedClass");
|
|
|
2839 ResourceMark rm(THREAD);
|
|
|
2840
|
|
|
2841 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
|
|
|
2842 // if a method in a class in a trusted loader is in a doPrivileged, return NULL
|
|
|
2843 bool trusted = is_trusted_frame(thread, &vfst);
|
|
|
2844 if (trusted) return NULL;
|
|
|
2845
|
|
|
2846 methodOop m = vfst.method();
|
|
|
2847 if (!m->is_native()) {
|
|
|
2848 klassOop holder = m->method_holder();
|
|
|
2849 oop loader = instanceKlass::cast(holder)->class_loader();
|
|
|
2850 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
|
|
|
2851 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror());
|
|
|
2852 }
|
|
|
2853 }
|
|
|
2854 }
|
|
|
2855 return NULL;
|
|
|
2856 JVM_END
|
|
|
2857
|
|
|
2858
|
|
|
2859 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env))
|
|
|
2860 JVMWrapper("JVM_CurrentClassLoader");
|
|
|
2861 ResourceMark rm(THREAD);
|
|
|
2862
|
|
|
2863 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
|
|
|
2864
|
|
|
2865 // if a method in a class in a trusted loader is in a doPrivileged, return NULL
|
|
|
2866 bool trusted = is_trusted_frame(thread, &vfst);
|
|
|
2867 if (trusted) return NULL;
|
|
|
2868
|
|
|
2869 methodOop m = vfst.method();
|
|
|
2870 if (!m->is_native()) {
|
|
|
2871 klassOop holder = m->method_holder();
|
|
|
2872 assert(holder->is_klass(), "just checking");
|
|
|
2873 oop loader = instanceKlass::cast(holder)->class_loader();
|
|
|
2874 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
|
|
|
2875 return JNIHandles::make_local(env, loader);
|
|
|
2876 }
|
|
|
2877 }
|
|
|
2878 }
|
|
|
2879 return NULL;
|
|
|
2880 JVM_END
|
|
|
2881
|
|
|
2882
|
|
|
2883 // Utility object for collecting method holders walking down the stack
|
|
|
2884 class KlassLink: public ResourceObj {
|
|
|
2885 public:
|
|
|
2886 KlassHandle klass;
|
|
|
2887 KlassLink* next;
|
|
|
2888
|
|
|
2889 KlassLink(KlassHandle k) { klass = k; next = NULL; }
|
|
|
2890 };
|
|
|
2891
|
|
|
2892
|
|
|
2893 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env))
|
|
|
2894 JVMWrapper("JVM_GetClassContext");
|
|
|
2895 ResourceMark rm(THREAD);
|
|
|
2896 JvmtiVMObjectAllocEventCollector oam;
|
|
|
2897 // Collect linked list of (handles to) method holders
|
|
|
2898 KlassLink* first = NULL;
|
|
|
2899 KlassLink* last = NULL;
|
|
|
2900 int depth = 0;
|
|
|
2901
|
|
|
2902 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) {
|
|
|
2903 // Native frames are not returned
|
|
|
2904 if (!vfst.method()->is_native()) {
|
|
|
2905 klassOop holder = vfst.method()->method_holder();
|
|
|
2906 assert(holder->is_klass(), "just checking");
|
|
|
2907 depth++;
|
|
|
2908 KlassLink* l = new KlassLink(KlassHandle(thread, holder));
|
|
|
2909 if (first == NULL) {
|
|
|
2910 first = last = l;
|
|
|
2911 } else {
|
|
|
2912 last->next = l;
|
|
|
2913 last = l;
|
|
|
2914 }
|
|
|
2915 }
|
|
|
2916 }
|
|
|
2917
|
|
|
2918 // Create result array of type [Ljava/lang/Class;
|
|
|
2919 objArrayOop result = oopFactory::new_objArray(SystemDictionary::class_klass(), depth, CHECK_NULL);
|
|
|
2920 // Fill in mirrors corresponding to method holders
|
|
|
2921 int index = 0;
|
|
|
2922 while (first != NULL) {
|
|
|
2923 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror());
|
|
|
2924 first = first->next;
|
|
|
2925 }
|
|
|
2926 assert(index == depth, "just checking");
|
|
|
2927
|
|
|
2928 return (jobjectArray) JNIHandles::make_local(env, result);
|
|
|
2929 JVM_END
|
|
|
2930
|
|
|
2931
|
|
|
2932 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name))
|
|
|
2933 JVMWrapper("JVM_ClassDepth");
|
|
|
2934 ResourceMark rm(THREAD);
|
|
|
2935 Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
|
|
|
2936 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0);
|
|
|
2937
|
|
|
2938 const char* str = java_lang_String::as_utf8_string(class_name_str());
|
|
|
2939 symbolHandle class_name_sym =
|
|
|
2940 symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str)));
|
|
|
2941 if (class_name_sym.is_null()) {
|
|
|
2942 return -1;
|
|
|
2943 }
|
|
|
2944
|
|
|
2945 int depth = 0;
|
|
|
2946
|
|
|
2947 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
|
|
|
2948 if (!vfst.method()->is_native()) {
|
|
|
2949 klassOop holder = vfst.method()->method_holder();
|
|
|
2950 assert(holder->is_klass(), "just checking");
|
|
|
2951 if (instanceKlass::cast(holder)->name() == class_name_sym()) {
|
|
|
2952 return depth;
|
|
|
2953 }
|
|
|
2954 depth++;
|
|
|
2955 }
|
|
|
2956 }
|
|
|
2957 return -1;
|
|
|
2958 JVM_END
|
|
|
2959
|
|
|
2960
|
|
|
2961 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env))
|
|
|
2962 JVMWrapper("JVM_ClassLoaderDepth");
|
|
|
2963 ResourceMark rm(THREAD);
|
|
|
2964 int depth = 0;
|
|
|
2965 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
|
|
|
2966 // if a method in a class in a trusted loader is in a doPrivileged, return -1
|
|
|
2967 bool trusted = is_trusted_frame(thread, &vfst);
|
|
|
2968 if (trusted) return -1;
|
|
|
2969
|
|
|
2970 methodOop m = vfst.method();
|
|
|
2971 if (!m->is_native()) {
|
|
|
2972 klassOop holder = m->method_holder();
|
|
|
2973 assert(holder->is_klass(), "just checking");
|
|
|
2974 oop loader = instanceKlass::cast(holder)->class_loader();
|
|
|
2975 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
|
|
|
2976 return depth;
|
|
|
2977 }
|
|
|
2978 depth++;
|
|
|
2979 }
|
|
|
2980 }
|
|
|
2981 return -1;
|
|
|
2982 JVM_END
|
|
|
2983
|
|
|
2984
|
|
|
2985 // java.lang.Package ////////////////////////////////////////////////////////////////
|
|
|
2986
|
|
|
2987
|
|
|
2988 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name))
|
|
|
2989 JVMWrapper("JVM_GetSystemPackage");
|
|
|
2990 ResourceMark rm(THREAD);
|
|
|
2991 JvmtiVMObjectAllocEventCollector oam;
|
|
|
2992 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
|
|
|
2993 oop result = ClassLoader::get_system_package(str, CHECK_NULL);
|
|
|
2994 return (jstring) JNIHandles::make_local(result);
|
|
|
2995 JVM_END
|
|
|
2996
|
|
|
2997
|
|
|
2998 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env))
|
|
|
2999 JVMWrapper("JVM_GetSystemPackages");
|
|
|
3000 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3001 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL);
|
|
|
3002 return (jobjectArray) JNIHandles::make_local(result);
|
|
|
3003 JVM_END
|
|
|
3004
|
|
|
3005
|
|
|
3006 // ObjectInputStream ///////////////////////////////////////////////////////////////
|
|
|
3007
|
|
|
3008 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) {
|
|
|
3009 if (current_class == NULL) {
|
|
|
3010 return true;
|
|
|
3011 }
|
|
|
3012 if ((current_class == field_class) || access.is_public()) {
|
|
|
3013 return true;
|
|
|
3014 }
|
|
|
3015
|
|
|
3016 if (access.is_protected()) {
|
|
|
3017 // See if current_class is a subclass of field_class
|
|
|
3018 if (Klass::cast(current_class)->is_subclass_of(field_class)) {
|
|
|
3019 return true;
|
|
|
3020 }
|
|
|
3021 }
|
|
|
3022
|
|
|
3023 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class));
|
|
|
3024 }
|
|
|
3025
|
|
|
3026
|
|
|
3027 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4
|
|
|
3028 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass))
|
|
|
3029 JVMWrapper("JVM_AllocateNewObject");
|
|
|
3030 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3031 // Receiver is not used
|
|
|
3032 oop curr_mirror = JNIHandles::resolve_non_null(currClass);
|
|
|
3033 oop init_mirror = JNIHandles::resolve_non_null(initClass);
|
|
|
3034
|
|
|
3035 // Cannot instantiate primitive types
|
|
|
3036 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) {
|
|
|
3037 ResourceMark rm(THREAD);
|
|
|
3038 THROW_0(vmSymbols::java_lang_InvalidClassException());
|
|
|
3039 }
|
|
|
3040
|
|
|
3041 // Arrays not allowed here, must use JVM_AllocateNewArray
|
|
|
3042 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() ||
|
|
|
3043 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) {
|
|
|
3044 ResourceMark rm(THREAD);
|
|
|
3045 THROW_0(vmSymbols::java_lang_InvalidClassException());
|
|
|
3046 }
|
|
|
3047
|
|
|
3048 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror));
|
|
|
3049 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror));
|
|
|
3050
|
|
|
3051 assert(curr_klass->is_subclass_of(init_klass()), "just checking");
|
|
|
3052
|
|
|
3053 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly.
|
|
|
3054 curr_klass->check_valid_for_instantiation(false, CHECK_NULL);
|
|
|
3055
|
|
|
3056 // Make sure klass is initialized, since we are about to instantiate one of them.
|
|
|
3057 curr_klass->initialize(CHECK_NULL);
|
|
|
3058
|
|
|
3059 methodHandle m (THREAD,
|
|
|
3060 init_klass->find_method(vmSymbols::object_initializer_name(),
|
|
|
3061 vmSymbols::void_method_signature()));
|
|
|
3062 if (m.is_null()) {
|
|
|
3063 ResourceMark rm(THREAD);
|
|
|
3064 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),
|
|
|
3065 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()),
|
|
|
3066 vmSymbols::object_initializer_name(),
|
|
|
3067 vmSymbols::void_method_signature()));
|
|
|
3068 }
|
|
|
3069
|
|
|
3070 if (curr_klass == init_klass && !m->is_public()) {
|
|
|
3071 // Calling the constructor for class 'curr_klass'.
|
|
|
3072 // Only allow calls to a public no-arg constructor.
|
|
|
3073 // This path corresponds to creating an Externalizable object.
|
|
|
3074 THROW_0(vmSymbols::java_lang_IllegalAccessException());
|
|
|
3075 }
|
|
|
3076
|
|
|
3077 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) {
|
|
|
3078 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb'
|
|
|
3079 THROW_0(vmSymbols::java_lang_IllegalAccessException());
|
|
|
3080 }
|
|
|
3081
|
|
|
3082 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL);
|
|
|
3083 // Call constructor m. This might call a constructor higher up in the hierachy
|
|
|
3084 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL);
|
|
|
3085
|
|
|
3086 return JNIHandles::make_local(obj());
|
|
|
3087 JVM_END
|
|
|
3088
|
|
|
3089
|
|
|
3090 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length))
|
|
|
3091 JVMWrapper("JVM_AllocateNewArray");
|
|
|
3092 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3093 oop mirror = JNIHandles::resolve_non_null(currClass);
|
|
|
3094
|
|
|
3095 if (java_lang_Class::is_primitive(mirror)) {
|
|
|
3096 THROW_0(vmSymbols::java_lang_InvalidClassException());
|
|
|
3097 }
|
|
|
3098 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
|
3099 oop result;
|
|
|
3100
|
|
|
3101 if (k->klass_part()->oop_is_typeArray()) {
|
|
|
3102 // typeArray
|
|
|
3103 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL);
|
|
|
3104 } else if (k->klass_part()->oop_is_objArray()) {
|
|
|
3105 // objArray
|
|
|
3106 objArrayKlassHandle oak(THREAD, k);
|
|
|
3107 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior)
|
|
|
3108 result = oak->allocate(length, CHECK_NULL);
|
|
|
3109 } else {
|
|
|
3110 THROW_0(vmSymbols::java_lang_InvalidClassException());
|
|
|
3111 }
|
|
|
3112 return JNIHandles::make_local(env, result);
|
|
|
3113 JVM_END
|
|
|
3114
|
|
|
3115
|
|
|
3116 // Return the first non-null class loader up the execution stack, or null
|
|
|
3117 // if only code from the null class loader is on the stack.
|
|
|
3118
|
|
|
3119 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env))
|
|
|
3120 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
|
|
|
3121 // UseNewReflection
|
|
|
3122 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection
|
|
|
3123 klassOop holder = vfst.method()->method_holder();
|
|
|
3124 oop loader = instanceKlass::cast(holder)->class_loader();
|
|
|
3125 if (loader != NULL) {
|
|
|
3126 return JNIHandles::make_local(env, loader);
|
|
|
3127 }
|
|
|
3128 }
|
|
|
3129 return NULL;
|
|
|
3130 JVM_END
|
|
|
3131
|
|
|
3132
|
|
|
3133 // Load a class relative to the most recent class on the stack with a non-null
|
|
|
3134 // classloader.
|
|
|
3135 // This function has been deprecated and should not be considered part of the
|
|
|
3136 // specified JVM interface.
|
|
|
3137
|
|
|
3138 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver,
|
|
|
3139 jclass currClass, jstring currClassName))
|
|
|
3140 JVMWrapper("JVM_LoadClass0");
|
|
|
3141 // Receiver is not used
|
|
|
3142 ResourceMark rm(THREAD);
|
|
|
3143
|
|
|
3144 // Class name argument is not guaranteed to be in internal format
|
|
|
3145 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName));
|
|
|
3146 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL);
|
|
|
3147
|
|
|
3148 const char* str = java_lang_String::as_utf8_string(string());
|
|
|
3149
|
|
|
3150 if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) {
|
|
|
3151 // It's impossible to create this class; the name cannot fit
|
|
|
3152 // into the constant pool.
|
|
|
3153 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str);
|
|
|
3154 }
|
|
|
3155
|
|
|
3156 symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL);
|
|
|
3157 Handle curr_klass (THREAD, JNIHandles::resolve(currClass));
|
|
|
3158 // Find the most recent class on the stack with a non-null classloader
|
|
|
3159 oop loader = NULL;
|
|
|
3160 oop protection_domain = NULL;
|
|
|
3161 if (curr_klass.is_null()) {
|
|
|
3162 for (vframeStream vfst(thread);
|
|
|
3163 !vfst.at_end() && loader == NULL;
|
|
|
3164 vfst.next()) {
|
|
|
3165 if (!vfst.method()->is_native()) {
|
|
|
3166 klassOop holder = vfst.method()->method_holder();
|
|
|
3167 loader = instanceKlass::cast(holder)->class_loader();
|
|
|
3168 protection_domain = instanceKlass::cast(holder)->protection_domain();
|
|
|
3169 }
|
|
|
3170 }
|
|
|
3171 } else {
|
|
|
3172 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass());
|
|
|
3173 loader = instanceKlass::cast(curr_klass_oop)->class_loader();
|
|
|
3174 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain();
|
|
|
3175 }
|
|
|
3176 Handle h_loader(THREAD, loader);
|
|
|
3177 Handle h_prot (THREAD, protection_domain);
|
|
|
3178 return find_class_from_class_loader(env, name, true, h_loader, h_prot,
|
|
|
3179 false, thread);
|
|
|
3180 JVM_END
|
|
|
3181
|
|
|
3182
|
|
|
3183 // Array ///////////////////////////////////////////////////////////////////////////////////////////
|
|
|
3184
|
|
|
3185
|
|
|
3186 // resolve array handle and check arguments
|
|
|
3187 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) {
|
|
|
3188 if (arr == NULL) {
|
|
|
3189 THROW_0(vmSymbols::java_lang_NullPointerException());
|
|
|
3190 }
|
|
|
3191 oop a = JNIHandles::resolve_non_null(arr);
|
|
|
3192 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) {
|
|
|
3193 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array");
|
|
|
3194 }
|
|
|
3195 return arrayOop(a);
|
|
|
3196 }
|
|
|
3197
|
|
|
3198
|
|
|
3199 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr))
|
|
|
3200 JVMWrapper("JVM_GetArrayLength");
|
|
|
3201 arrayOop a = check_array(env, arr, false, CHECK_0);
|
|
|
3202 return a->length();
|
|
|
3203 JVM_END
|
|
|
3204
|
|
|
3205
|
|
|
3206 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index))
|
|
|
3207 JVMWrapper("JVM_Array_Get");
|
|
|
3208 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3209 arrayOop a = check_array(env, arr, false, CHECK_NULL);
|
|
|
3210 jvalue value;
|
|
|
3211 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL);
|
|
|
3212 oop box = Reflection::box(&value, type, CHECK_NULL);
|
|
|
3213 return JNIHandles::make_local(env, box);
|
|
|
3214 JVM_END
|
|
|
3215
|
|
|
3216
|
|
|
3217 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode))
|
|
|
3218 JVMWrapper("JVM_GetPrimitiveArrayElement");
|
|
|
3219 jvalue value;
|
|
|
3220 value.i = 0; // to initialize value before getting used in CHECK
|
|
|
3221 arrayOop a = check_array(env, arr, true, CHECK_(value));
|
|
|
3222 assert(a->is_typeArray(), "just checking");
|
|
|
3223 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value));
|
|
|
3224 BasicType wide_type = (BasicType) wCode;
|
|
|
3225 if (type != wide_type) {
|
|
|
3226 Reflection::widen(&value, type, wide_type, CHECK_(value));
|
|
|
3227 }
|
|
|
3228 return value;
|
|
|
3229 JVM_END
|
|
|
3230
|
|
|
3231
|
|
|
3232 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val))
|
|
|
3233 JVMWrapper("JVM_SetArrayElement");
|
|
|
3234 arrayOop a = check_array(env, arr, false, CHECK);
|
|
|
3235 oop box = JNIHandles::resolve(val);
|
|
|
3236 jvalue value;
|
|
|
3237 value.i = 0; // to initialize value before getting used in CHECK
|
|
|
3238 BasicType value_type;
|
|
|
3239 if (a->is_objArray()) {
|
|
|
3240 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array
|
|
|
3241 value_type = Reflection::unbox_for_regular_object(box, &value);
|
|
|
3242 } else {
|
|
|
3243 value_type = Reflection::unbox_for_primitive(box, &value, CHECK);
|
|
|
3244 }
|
|
|
3245 Reflection::array_set(&value, a, index, value_type, CHECK);
|
|
|
3246 JVM_END
|
|
|
3247
|
|
|
3248
|
|
|
3249 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode))
|
|
|
3250 JVMWrapper("JVM_SetPrimitiveArrayElement");
|
|
|
3251 arrayOop a = check_array(env, arr, true, CHECK);
|
|
|
3252 assert(a->is_typeArray(), "just checking");
|
|
|
3253 BasicType value_type = (BasicType) vCode;
|
|
|
3254 Reflection::array_set(&v, a, index, value_type, CHECK);
|
|
|
3255 JVM_END
|
|
|
3256
|
|
|
3257
|
|
|
3258 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length))
|
|
|
3259 JVMWrapper("JVM_NewArray");
|
|
|
3260 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3261 oop element_mirror = JNIHandles::resolve(eltClass);
|
|
|
3262 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL);
|
|
|
3263 return JNIHandles::make_local(env, result);
|
|
|
3264 JVM_END
|
|
|
3265
|
|
|
3266
|
|
|
3267 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim))
|
|
|
3268 JVMWrapper("JVM_NewMultiArray");
|
|
|
3269 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3270 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL);
|
|
|
3271 oop element_mirror = JNIHandles::resolve(eltClass);
|
|
|
3272 assert(dim_array->is_typeArray(), "just checking");
|
|
|
3273 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL);
|
|
|
3274 return JNIHandles::make_local(env, result);
|
|
|
3275 JVM_END
|
|
|
3276
|
|
|
3277
|
|
|
3278 // Networking library support ////////////////////////////////////////////////////////////////////
|
|
|
3279
|
|
|
3280 JVM_LEAF(jint, JVM_InitializeSocketLibrary())
|
|
|
3281 JVMWrapper("JVM_InitializeSocketLibrary");
|
|
|
3282 return hpi::initialize_socket_library();
|
|
|
3283 JVM_END
|
|
|
3284
|
|
|
3285
|
|
|
3286 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol))
|
|
|
3287 JVMWrapper("JVM_Socket");
|
|
|
3288 return hpi::socket(domain, type, protocol);
|
|
|
3289 JVM_END
|
|
|
3290
|
|
|
3291
|
|
|
3292 JVM_LEAF(jint, JVM_SocketClose(jint fd))
|
|
|
3293 JVMWrapper2("JVM_SocketClose (0x%x)", fd);
|
|
|
3294 //%note jvm_r6
|
|
|
3295 return hpi::socket_close(fd);
|
|
|
3296 JVM_END
|
|
|
3297
|
|
|
3298
|
|
|
3299 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto))
|
|
|
3300 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd);
|
|
|
3301 //%note jvm_r6
|
|
|
3302 return hpi::socket_shutdown(fd, howto);
|
|
|
3303 JVM_END
|
|
|
3304
|
|
|
3305
|
|
|
3306 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags))
|
|
|
3307 JVMWrapper2("JVM_Recv (0x%x)", fd);
|
|
|
3308 //%note jvm_r6
|
|
|
3309 return hpi::recv(fd, buf, nBytes, flags);
|
|
|
3310 JVM_END
|
|
|
3311
|
|
|
3312
|
|
|
3313 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags))
|
|
|
3314 JVMWrapper2("JVM_Send (0x%x)", fd);
|
|
|
3315 //%note jvm_r6
|
|
|
3316 return hpi::send(fd, buf, nBytes, flags);
|
|
|
3317 JVM_END
|
|
|
3318
|
|
|
3319
|
|
|
3320 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout))
|
|
|
3321 JVMWrapper2("JVM_Timeout (0x%x)", fd);
|
|
|
3322 //%note jvm_r6
|
|
|
3323 return hpi::timeout(fd, timeout);
|
|
|
3324 JVM_END
|
|
|
3325
|
|
|
3326
|
|
|
3327 JVM_LEAF(jint, JVM_Listen(jint fd, jint count))
|
|
|
3328 JVMWrapper2("JVM_Listen (0x%x)", fd);
|
|
|
3329 //%note jvm_r6
|
|
|
3330 return hpi::listen(fd, count);
|
|
|
3331 JVM_END
|
|
|
3332
|
|
|
3333
|
|
|
3334 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len))
|
|
|
3335 JVMWrapper2("JVM_Connect (0x%x)", fd);
|
|
|
3336 //%note jvm_r6
|
|
|
3337 return hpi::connect(fd, him, len);
|
|
|
3338 JVM_END
|
|
|
3339
|
|
|
3340
|
|
|
3341 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len))
|
|
|
3342 JVMWrapper2("JVM_Bind (0x%x)", fd);
|
|
|
3343 //%note jvm_r6
|
|
|
3344 return hpi::bind(fd, him, len);
|
|
|
3345 JVM_END
|
|
|
3346
|
|
|
3347
|
|
|
3348 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len))
|
|
|
3349 JVMWrapper2("JVM_Accept (0x%x)", fd);
|
|
|
3350 //%note jvm_r6
|
|
|
3351 return hpi::accept(fd, him, (int *)len);
|
|
|
3352 JVM_END
|
|
|
3353
|
|
|
3354
|
|
|
3355 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen))
|
|
|
3356 JVMWrapper2("JVM_RecvFrom (0x%x)", fd);
|
|
|
3357 //%note jvm_r6
|
|
|
3358 return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen);
|
|
|
3359 JVM_END
|
|
|
3360
|
|
|
3361
|
|
|
3362 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len))
|
|
|
3363 JVMWrapper2("JVM_GetSockName (0x%x)", fd);
|
|
|
3364 //%note jvm_r6
|
|
|
3365 return hpi::get_sock_name(fd, him, len);
|
|
|
3366 JVM_END
|
|
|
3367
|
|
|
3368
|
|
|
3369 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen))
|
|
|
3370 JVMWrapper2("JVM_SendTo (0x%x)", fd);
|
|
|
3371 //%note jvm_r6
|
|
|
3372 return hpi::sendto(fd, buf, len, flags, to, tolen);
|
|
|
3373 JVM_END
|
|
|
3374
|
|
|
3375
|
|
|
3376 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes))
|
|
|
3377 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd);
|
|
|
3378 //%note jvm_r6
|
|
|
3379 return hpi::socket_available(fd, pbytes);
|
|
|
3380 JVM_END
|
|
|
3381
|
|
|
3382
|
|
|
3383 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen))
|
|
|
3384 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd);
|
|
|
3385 //%note jvm_r6
|
|
|
3386 return hpi::get_sock_opt(fd, level, optname, optval, optlen);
|
|
|
3387 JVM_END
|
|
|
3388
|
|
|
3389
|
|
|
3390 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen))
|
|
|
3391 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd);
|
|
|
3392 //%note jvm_r6
|
|
|
3393 return hpi::set_sock_opt(fd, level, optname, optval, optlen);
|
|
|
3394 JVM_END
|
|
|
3395
|
|
|
3396 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen))
|
|
|
3397 JVMWrapper("JVM_GetHostName");
|
|
|
3398 return hpi::get_host_name(name, namelen);
|
|
|
3399 JVM_END
|
|
|
3400
|
|
|
3401 #ifdef _WINDOWS
|
|
|
3402
|
|
|
3403 JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type))
|
|
|
3404 JVMWrapper("JVM_GetHostByAddr");
|
|
|
3405 return hpi::get_host_by_addr(name, len, type);
|
|
|
3406 JVM_END
|
|
|
3407
|
|
|
3408
|
|
|
3409 JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name))
|
|
|
3410 JVMWrapper("JVM_GetHostByName");
|
|
|
3411 return hpi::get_host_by_name(name);
|
|
|
3412 JVM_END
|
|
|
3413
|
|
|
3414
|
|
|
3415 JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name))
|
|
|
3416 JVMWrapper("JVM_GetProtoByName");
|
|
|
3417 return hpi::get_proto_by_name(name);
|
|
|
3418 JVM_END
|
|
|
3419
|
|
|
3420 #endif
|
|
|
3421
|
|
|
3422 // Library support ///////////////////////////////////////////////////////////////////////////
|
|
|
3423
|
|
|
3424 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name))
|
|
|
3425 //%note jvm_ct
|
|
|
3426 JVMWrapper2("JVM_LoadLibrary (%s)", name);
|
|
|
3427 char ebuf[1024];
|
|
|
3428 void *load_result;
|
|
|
3429 {
|
|
|
3430 ThreadToNativeFromVM ttnfvm(thread);
|
|
|
3431 load_result = hpi::dll_load(name, ebuf, sizeof ebuf);
|
|
|
3432 }
|
|
|
3433 if (load_result == NULL) {
|
|
|
3434 char msg[1024];
|
|
|
3435 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf);
|
|
|
3436 // Since 'ebuf' may contain a string encoded using
|
|
|
3437 // platform encoding scheme, we need to pass
|
|
|
3438 // Exceptions::unsafe_to_utf8 to the new_exception method
|
|
|
3439 // as the last argument. See bug 6367357.
|
|
|
3440 Handle h_exception =
|
|
|
3441 Exceptions::new_exception(thread,
|
|
|
3442 vmSymbols::java_lang_UnsatisfiedLinkError(),
|
|
|
3443 msg, Exceptions::unsafe_to_utf8);
|
|
|
3444
|
|
|
3445 THROW_HANDLE_0(h_exception);
|
|
|
3446 }
|
|
|
3447 return load_result;
|
|
|
3448 JVM_END
|
|
|
3449
|
|
|
3450
|
|
|
3451 JVM_LEAF(void, JVM_UnloadLibrary(void* handle))
|
|
|
3452 JVMWrapper("JVM_UnloadLibrary");
|
|
|
3453 hpi::dll_unload(handle);
|
|
|
3454 JVM_END
|
|
|
3455
|
|
|
3456
|
|
|
3457 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name))
|
|
|
3458 JVMWrapper2("JVM_FindLibraryEntry (%s)", name);
|
|
|
3459 return hpi::dll_lookup(handle, name);
|
|
|
3460 JVM_END
|
|
|
3461
|
|
|
3462 // Floating point support ////////////////////////////////////////////////////////////////////
|
|
|
3463
|
|
|
3464 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a))
|
|
|
3465 JVMWrapper("JVM_IsNaN");
|
|
|
3466 return g_isnan(a);
|
|
|
3467 JVM_END
|
|
|
3468
|
|
|
3469
|
|
|
3470
|
|
|
3471 // JNI version ///////////////////////////////////////////////////////////////////////////////
|
|
|
3472
|
|
|
3473 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version))
|
|
|
3474 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version);
|
|
|
3475 return Threads::is_supported_jni_version_including_1_1(version);
|
|
|
3476 JVM_END
|
|
|
3477
|
|
|
3478
|
|
|
3479 // String support ///////////////////////////////////////////////////////////////////////////
|
|
|
3480
|
|
|
3481 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str))
|
|
|
3482 JVMWrapper("JVM_InternString");
|
|
|
3483 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3484 if (str == NULL) return NULL;
|
|
|
3485 oop string = JNIHandles::resolve_non_null(str);
|
|
|
3486 oop result = StringTable::intern(string, CHECK_NULL);
|
|
|
3487 return (jstring) JNIHandles::make_local(env, result);
|
|
|
3488 JVM_END
|
|
|
3489
|
|
|
3490
|
|
|
3491 // Raw monitor support //////////////////////////////////////////////////////////////////////
|
|
|
3492
|
|
|
3493 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock
|
|
|
3494 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because
|
|
|
3495 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check
|
|
|
3496 // that only works with java threads.
|
|
|
3497
|
|
|
3498
|
|
|
3499 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) {
|
|
|
3500 VM_Exit::block_if_vm_exited();
|
|
|
3501 JVMWrapper("JVM_RawMonitorCreate");
|
|
|
3502 return new Mutex(Mutex::native, "JVM_RawMonitorCreate");
|
|
|
3503 }
|
|
|
3504
|
|
|
3505
|
|
|
3506 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) {
|
|
|
3507 VM_Exit::block_if_vm_exited();
|
|
|
3508 JVMWrapper("JVM_RawMonitorDestroy");
|
|
|
3509 delete ((Mutex*) mon);
|
|
|
3510 }
|
|
|
3511
|
|
|
3512
|
|
|
3513 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) {
|
|
|
3514 VM_Exit::block_if_vm_exited();
|
|
|
3515 JVMWrapper("JVM_RawMonitorEnter");
|
|
|
3516 ((Mutex*) mon)->jvm_raw_lock();
|
|
|
3517 return 0;
|
|
|
3518 }
|
|
|
3519
|
|
|
3520
|
|
|
3521 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) {
|
|
|
3522 VM_Exit::block_if_vm_exited();
|
|
|
3523 JVMWrapper("JVM_RawMonitorExit");
|
|
|
3524 ((Mutex*) mon)->jvm_raw_unlock();
|
|
|
3525 }
|
|
|
3526
|
|
|
3527
|
|
|
3528 // Support for Serialization
|
|
|
3529
|
|
|
3530 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value);
|
|
|
3531 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value);
|
|
|
3532 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value);
|
|
|
3533 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value);
|
|
|
3534
|
|
|
3535 static IntBitsToFloatFn int_bits_to_float_fn = NULL;
|
|
|
3536 static LongBitsToDoubleFn long_bits_to_double_fn = NULL;
|
|
|
3537 static FloatToIntBitsFn float_to_int_bits_fn = NULL;
|
|
|
3538 static DoubleToLongBitsFn double_to_long_bits_fn = NULL;
|
|
|
3539
|
|
|
3540
|
|
|
3541 void initialize_converter_functions() {
|
|
|
3542 if (JDK_Version::is_gte_jdk14x_version()) {
|
|
|
3543 // These functions only exist for compatibility with 1.3.1 and earlier
|
|
|
3544 return;
|
|
|
3545 }
|
|
|
3546
|
|
|
3547 // called from universe_post_init()
|
|
|
3548 assert(
|
|
|
3549 int_bits_to_float_fn == NULL &&
|
|
|
3550 long_bits_to_double_fn == NULL &&
|
|
|
3551 float_to_int_bits_fn == NULL &&
|
|
|
3552 double_to_long_bits_fn == NULL ,
|
|
|
3553 "initialization done twice"
|
|
|
3554 );
|
|
|
3555 // initialize
|
|
|
3556 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F"));
|
|
|
3557 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D"));
|
|
|
3558 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I"));
|
|
|
3559 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J"));
|
|
|
3560 // verify
|
|
|
3561 assert(
|
|
|
3562 int_bits_to_float_fn != NULL &&
|
|
|
3563 long_bits_to_double_fn != NULL &&
|
|
|
3564 float_to_int_bits_fn != NULL &&
|
|
|
3565 double_to_long_bits_fn != NULL ,
|
|
|
3566 "initialization failed"
|
|
|
3567 );
|
|
|
3568 }
|
|
|
3569
|
|
|
3570
|
|
|
3571 // Serialization
|
|
|
3572 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
|
|
|
3573 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data))
|
|
|
3574 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier");
|
|
|
3575
|
|
|
3576 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes));
|
|
|
3577 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data));
|
|
|
3578 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs));
|
|
|
3579 oop o = JNIHandles::resolve(obj);
|
|
|
3580
|
|
|
3581 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) {
|
|
|
3582 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
3583 }
|
|
|
3584
|
|
|
3585 jsize nfids = fids->length();
|
|
|
3586 if (nfids == 0) return;
|
|
|
3587
|
|
|
3588 if (tcodes->length() < nfids) {
|
|
|
3589 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
|
|
|
3590 }
|
|
|
3591
|
|
|
3592 jsize off = 0;
|
|
|
3593 /* loop through fields, setting values */
|
|
|
3594 for (jsize i = 0; i < nfids; i++) {
|
|
|
3595 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i);
|
|
|
3596 int field_offset;
|
|
|
3597 if (fid != NULL) {
|
|
|
3598 // NULL is a legal value for fid, but retrieving the field offset
|
|
|
3599 // trigger assertion in that case
|
|
|
3600 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid);
|
|
|
3601 }
|
|
|
3602
|
|
|
3603 switch (tcodes->char_at(i)) {
|
|
|
3604 case 'Z':
|
|
|
3605 if (fid != NULL) {
|
|
|
3606 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE;
|
|
|
3607 o->bool_field_put(field_offset, val);
|
|
|
3608 }
|
|
|
3609 off++;
|
|
|
3610 break;
|
|
|
3611
|
|
|
3612 case 'B':
|
|
|
3613 if (fid != NULL) {
|
|
|
3614 o->byte_field_put(field_offset, dbuf->byte_at(off));
|
|
|
3615 }
|
|
|
3616 off++;
|
|
|
3617 break;
|
|
|
3618
|
|
|
3619 case 'C':
|
|
|
3620 if (fid != NULL) {
|
|
|
3621 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8)
|
|
|
3622 + ((dbuf->byte_at(off + 1) & 0xFF) << 0);
|
|
|
3623 o->char_field_put(field_offset, val);
|
|
|
3624 }
|
|
|
3625 off += 2;
|
|
|
3626 break;
|
|
|
3627
|
|
|
3628 case 'S':
|
|
|
3629 if (fid != NULL) {
|
|
|
3630 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8)
|
|
|
3631 + ((dbuf->byte_at(off + 1) & 0xFF) << 0);
|
|
|
3632 o->short_field_put(field_offset, val);
|
|
|
3633 }
|
|
|
3634 off += 2;
|
|
|
3635 break;
|
|
|
3636
|
|
|
3637 case 'I':
|
|
|
3638 if (fid != NULL) {
|
|
|
3639 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24)
|
|
|
3640 + ((dbuf->byte_at(off + 1) & 0xFF) << 16)
|
|
|
3641 + ((dbuf->byte_at(off + 2) & 0xFF) << 8)
|
|
|
3642 + ((dbuf->byte_at(off + 3) & 0xFF) << 0);
|
|
|
3643 o->int_field_put(field_offset, ival);
|
|
|
3644 }
|
|
|
3645 off += 4;
|
|
|
3646 break;
|
|
|
3647
|
|
|
3648 case 'F':
|
|
|
3649 if (fid != NULL) {
|
|
|
3650 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24)
|
|
|
3651 + ((dbuf->byte_at(off + 1) & 0xFF) << 16)
|
|
|
3652 + ((dbuf->byte_at(off + 2) & 0xFF) << 8)
|
|
|
3653 + ((dbuf->byte_at(off + 3) & 0xFF) << 0);
|
|
|
3654 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival);
|
|
|
3655 o->float_field_put(field_offset, fval);
|
|
|
3656 }
|
|
|
3657 off += 4;
|
|
|
3658 break;
|
|
|
3659
|
|
|
3660 case 'J':
|
|
|
3661 if (fid != NULL) {
|
|
|
3662 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56)
|
|
|
3663 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48)
|
|
|
3664 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40)
|
|
|
3665 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32)
|
|
|
3666 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24)
|
|
|
3667 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16)
|
|
|
3668 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8)
|
|
|
3669 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0);
|
|
|
3670 o->long_field_put(field_offset, lval);
|
|
|
3671 }
|
|
|
3672 off += 8;
|
|
|
3673 break;
|
|
|
3674
|
|
|
3675 case 'D':
|
|
|
3676 if (fid != NULL) {
|
|
|
3677 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56)
|
|
|
3678 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48)
|
|
|
3679 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40)
|
|
|
3680 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32)
|
|
|
3681 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24)
|
|
|
3682 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16)
|
|
|
3683 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8)
|
|
|
3684 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0);
|
|
|
3685 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval);
|
|
|
3686 o->double_field_put(field_offset, dval);
|
|
|
3687 }
|
|
|
3688 off += 8;
|
|
|
3689 break;
|
|
|
3690
|
|
|
3691 default:
|
|
|
3692 // Illegal typecode
|
|
|
3693 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode");
|
|
|
3694 }
|
|
|
3695 }
|
|
|
3696 JVM_END
|
|
|
3697
|
|
|
3698
|
|
|
3699 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
|
|
|
3700 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data))
|
|
|
3701 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier");
|
|
|
3702
|
|
|
3703 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes));
|
|
|
3704 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data));
|
|
|
3705 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs));
|
|
|
3706 oop o = JNIHandles::resolve(obj);
|
|
|
3707
|
|
|
3708 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) {
|
|
|
3709 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
3710 }
|
|
|
3711
|
|
|
3712 jsize nfids = fids->length();
|
|
|
3713 if (nfids == 0) return;
|
|
|
3714
|
|
|
3715 if (tcodes->length() < nfids) {
|
|
|
3716 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
|
|
|
3717 }
|
|
|
3718
|
|
|
3719 /* loop through fields, fetching values */
|
|
|
3720 jsize off = 0;
|
|
|
3721 for (jsize i = 0; i < nfids; i++) {
|
|
|
3722 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i);
|
|
|
3723 if (fid == NULL) {
|
|
|
3724 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
3725 }
|
|
|
3726 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid);
|
|
|
3727
|
|
|
3728 switch (tcodes->char_at(i)) {
|
|
|
3729 case 'Z':
|
|
|
3730 {
|
|
|
3731 jboolean val = o->bool_field(field_offset);
|
|
|
3732 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0);
|
|
|
3733 }
|
|
|
3734 break;
|
|
|
3735
|
|
|
3736 case 'B':
|
|
|
3737 dbuf->byte_at_put(off++, o->byte_field(field_offset));
|
|
|
3738 break;
|
|
|
3739
|
|
|
3740 case 'C':
|
|
|
3741 {
|
|
|
3742 jchar val = o->char_field(field_offset);
|
|
|
3743 dbuf->byte_at_put(off++, (val >> 8) & 0xFF);
|
|
|
3744 dbuf->byte_at_put(off++, (val >> 0) & 0xFF);
|
|
|
3745 }
|
|
|
3746 break;
|
|
|
3747
|
|
|
3748 case 'S':
|
|
|
3749 {
|
|
|
3750 jshort val = o->short_field(field_offset);
|
|
|
3751 dbuf->byte_at_put(off++, (val >> 8) & 0xFF);
|
|
|
3752 dbuf->byte_at_put(off++, (val >> 0) & 0xFF);
|
|
|
3753 }
|
|
|
3754 break;
|
|
|
3755
|
|
|
3756 case 'I':
|
|
|
3757 {
|
|
|
3758 jint val = o->int_field(field_offset);
|
|
|
3759 dbuf->byte_at_put(off++, (val >> 24) & 0xFF);
|
|
|
3760 dbuf->byte_at_put(off++, (val >> 16) & 0xFF);
|
|
|
3761 dbuf->byte_at_put(off++, (val >> 8) & 0xFF);
|
|
|
3762 dbuf->byte_at_put(off++, (val >> 0) & 0xFF);
|
|
|
3763 }
|
|
|
3764 break;
|
|
|
3765
|
|
|
3766 case 'F':
|
|
|
3767 {
|
|
|
3768 jfloat fval = o->float_field(field_offset);
|
|
|
3769 jint ival = (*float_to_int_bits_fn)(env, NULL, fval);
|
|
|
3770 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF);
|
|
|
3771 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF);
|
|
|
3772 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF);
|
|
|
3773 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF);
|
|
|
3774 }
|
|
|
3775 break;
|
|
|
3776
|
|
|
3777 case 'J':
|
|
|
3778 {
|
|
|
3779 jlong val = o->long_field(field_offset);
|
|
|
3780 dbuf->byte_at_put(off++, (val >> 56) & 0xFF);
|
|
|
3781 dbuf->byte_at_put(off++, (val >> 48) & 0xFF);
|
|
|
3782 dbuf->byte_at_put(off++, (val >> 40) & 0xFF);
|
|
|
3783 dbuf->byte_at_put(off++, (val >> 32) & 0xFF);
|
|
|
3784 dbuf->byte_at_put(off++, (val >> 24) & 0xFF);
|
|
|
3785 dbuf->byte_at_put(off++, (val >> 16) & 0xFF);
|
|
|
3786 dbuf->byte_at_put(off++, (val >> 8) & 0xFF);
|
|
|
3787 dbuf->byte_at_put(off++, (val >> 0) & 0xFF);
|
|
|
3788 }
|
|
|
3789 break;
|
|
|
3790
|
|
|
3791 case 'D':
|
|
|
3792 {
|
|
|
3793 jdouble dval = o->double_field(field_offset);
|
|
|
3794 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval);
|
|
|
3795 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF);
|
|
|
3796 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF);
|
|
|
3797 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF);
|
|
|
3798 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF);
|
|
|
3799 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF);
|
|
|
3800 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF);
|
|
|
3801 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF);
|
|
|
3802 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF);
|
|
|
3803 }
|
|
|
3804 break;
|
|
|
3805
|
|
|
3806 default:
|
|
|
3807 // Illegal typecode
|
|
|
3808 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode");
|
|
|
3809 }
|
|
|
3810 }
|
|
|
3811 JVM_END
|
|
|
3812
|
|
|
3813
|
|
|
3814 // Shared JNI/JVM entry points //////////////////////////////////////////////////////////////
|
|
|
3815
|
|
|
3816 jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) {
|
|
|
3817 // Security Note:
|
|
|
3818 // The Java level wrapper will perform the necessary security check allowing
|
|
|
3819 // us to pass the NULL as the initiating class loader.
|
|
|
3820 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL);
|
|
|
3821 KlassHandle klass_handle(THREAD, klass);
|
|
|
3822 // Check if we should initialize the class
|
|
|
3823 if (init && klass_handle->oop_is_instance()) {
|
|
|
3824 klass_handle->initialize(CHECK_NULL);
|
|
|
3825 }
|
|
|
3826 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror());
|
|
|
3827 }
|
|
|
3828
|
|
|
3829
|
|
|
3830 // Internal SQE debugging support ///////////////////////////////////////////////////////////
|
|
|
3831
|
|
|
3832 #ifndef PRODUCT
|
|
|
3833
|
|
|
3834 extern "C" {
|
|
|
3835 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get);
|
|
|
3836 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get);
|
|
|
3837 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj);
|
|
|
3838 }
|
|
|
3839
|
|
|
3840 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get))
|
|
|
3841 JVMWrapper("JVM_AccessBoolVMFlag");
|
|
|
3842 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL);
|
|
|
3843 JVM_END
|
|
|
3844
|
|
|
3845 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get))
|
|
|
3846 JVMWrapper("JVM_AccessVMIntFlag");
|
|
|
3847 intx v;
|
|
|
3848 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL);
|
|
|
3849 *value = (jint)v;
|
|
|
3850 return result;
|
|
|
3851 JVM_END
|
|
|
3852
|
|
|
3853
|
|
|
3854 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj))
|
|
|
3855 JVMWrapper("JVM_VMBreakPoint");
|
|
|
3856 oop the_obj = JNIHandles::resolve(obj);
|
|
|
3857 BREAKPOINT;
|
|
|
3858 JVM_END
|
|
|
3859
|
|
|
3860
|
|
|
3861 #endif
|
|
|
3862
|
|
|
3863
|
|
|
3864 //---------------------------------------------------------------------------
|
|
|
3865 //
|
|
|
3866 // Support for old native code-based reflection (pre-JDK 1.4)
|
|
|
3867 // Disabled by default in the product build.
|
|
|
3868 //
|
|
|
3869 // See reflection.hpp for information on SUPPORT_OLD_REFLECTION
|
|
|
3870 //
|
|
|
3871 //---------------------------------------------------------------------------
|
|
|
3872
|
|
|
3873 #ifdef SUPPORT_OLD_REFLECTION
|
|
|
3874
|
|
|
3875 JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which))
|
|
|
3876 JVMWrapper("JVM_GetClassFields");
|
|
|
3877 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3878 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3879 objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL);
|
|
|
3880 return (jobjectArray) JNIHandles::make_local(env, result);
|
|
|
3881 JVM_END
|
|
|
3882
|
|
|
3883
|
|
|
3884 JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which))
|
|
|
3885 JVMWrapper("JVM_GetClassMethods");
|
|
|
3886 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3887 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3888 objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL);
|
|
|
3889 //%note jvm_r4
|
|
|
3890 return (jobjectArray) JNIHandles::make_local(env, result);
|
|
|
3891 JVM_END
|
|
|
3892
|
|
|
3893
|
|
|
3894 JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which))
|
|
|
3895 JVMWrapper("JVM_GetClassConstructors");
|
|
|
3896 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3897 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3898 objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL);
|
|
|
3899 //%note jvm_r4
|
|
|
3900 return (jobjectArray) JNIHandles::make_local(env, result);
|
|
|
3901 JVM_END
|
|
|
3902
|
|
|
3903
|
|
|
3904 JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which))
|
|
|
3905 JVMWrapper("JVM_GetClassField");
|
|
|
3906 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3907 if (name == NULL) return NULL;
|
|
|
3908 Handle str (THREAD, JNIHandles::resolve_non_null(name));
|
|
|
3909
|
|
|
3910 const char* cstr = java_lang_String::as_utf8_string(str());
|
|
|
3911 symbolHandle field_name =
|
|
|
3912 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr)));
|
|
|
3913 if (field_name.is_null()) {
|
|
|
3914 THROW_0(vmSymbols::java_lang_NoSuchFieldException());
|
|
|
3915 }
|
|
|
3916
|
|
|
3917 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3918 oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL);
|
|
|
3919 if (result == NULL) {
|
|
|
3920 THROW_0(vmSymbols::java_lang_NoSuchFieldException());
|
|
|
3921 }
|
|
|
3922 return JNIHandles::make_local(env, result);
|
|
|
3923 JVM_END
|
|
|
3924
|
|
|
3925
|
|
|
3926 JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which))
|
|
|
3927 JVMWrapper("JVM_GetClassMethod");
|
|
|
3928 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3929 if (name == NULL) {
|
|
|
3930 THROW_0(vmSymbols::java_lang_NullPointerException());
|
|
|
3931 }
|
|
|
3932 Handle str (THREAD, JNIHandles::resolve_non_null(name));
|
|
|
3933
|
|
|
3934 const char* cstr = java_lang_String::as_utf8_string(str());
|
|
|
3935 symbolHandle method_name =
|
|
|
3936 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr)));
|
|
|
3937 if (method_name.is_null()) {
|
|
|
3938 THROW_0(vmSymbols::java_lang_NoSuchMethodException());
|
|
|
3939 }
|
|
|
3940
|
|
|
3941 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3942 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types)));
|
|
|
3943 oop result = Reflection::reflect_method(mirror, method_name, tarray,
|
|
|
3944 which, CHECK_NULL);
|
|
|
3945 if (result == NULL) {
|
|
|
3946 THROW_0(vmSymbols::java_lang_NoSuchMethodException());
|
|
|
3947 }
|
|
|
3948 return JNIHandles::make_local(env, result);
|
|
|
3949 JVM_END
|
|
|
3950
|
|
|
3951
|
|
|
3952 JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which))
|
|
|
3953 JVMWrapper("JVM_GetClassConstructor");
|
|
|
3954 JvmtiVMObjectAllocEventCollector oam;
|
|
|
3955 oop mirror = JNIHandles::resolve_non_null(cls);
|
|
|
3956 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types)));
|
|
|
3957 oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL);
|
|
|
3958 if (result == NULL) {
|
|
|
3959 THROW_0(vmSymbols::java_lang_NoSuchMethodException());
|
|
|
3960 }
|
|
|
3961 return (jobject) JNIHandles::make_local(env, result);
|
|
|
3962 JVM_END
|
|
|
3963
|
|
|
3964
|
|
|
3965 // Instantiation ///////////////////////////////////////////////////////////////////////////////
|
|
|
3966
|
|
|
3967 JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls))
|
|
|
3968 JVMWrapper("JVM_NewInstance");
|
|
|
3969 Handle mirror(THREAD, JNIHandles::resolve_non_null(cls));
|
|
|
3970
|
|
|
3971 methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror());
|
|
|
3972 if (resolved_constructor == NULL) {
|
|
|
3973 klassOop k = java_lang_Class::as_klassOop(mirror());
|
|
|
3974 // The java.lang.Class object caches a resolved constructor if all the checks
|
|
|
3975 // below were done successfully and a constructor was found.
|
|
|
3976
|
|
|
3977 // Do class based checks
|
|
|
3978 if (java_lang_Class::is_primitive(mirror())) {
|
|
|
3979 const char* msg = "";
|
|
|
3980 if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean";
|
|
|
3981 else if (mirror == Universe::char_mirror()) msg = "java/lang/Character";
|
|
|
3982 else if (mirror == Universe::float_mirror()) msg = "java/lang/Float";
|
|
|
3983 else if (mirror == Universe::double_mirror()) msg = "java/lang/Double";
|
|
|
3984 else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte";
|
|
|
3985 else if (mirror == Universe::short_mirror()) msg = "java/lang/Short";
|
|
|
3986 else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer";
|
|
|
3987 else if (mirror == Universe::long_mirror()) msg = "java/lang/Long";
|
|
|
3988 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg);
|
|
|
3989 }
|
|
|
3990
|
|
|
3991 // Check whether we are allowed to instantiate this class
|
|
|
3992 Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here
|
|
|
3993 instanceKlassHandle klass(THREAD, k);
|
|
|
3994 // Make sure class is initialized (also so all methods are rewritten)
|
|
|
3995 klass->initialize(CHECK_NULL);
|
|
|
3996
|
|
|
3997 // Lookup default constructor
|
|
|
3998 resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature());
|
|
|
3999 if (resolved_constructor == NULL) {
|
|
|
4000 ResourceMark rm(THREAD);
|
|
|
4001 THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name());
|
|
|
4002 }
|
|
|
4003
|
|
|
4004 // Cache result in java.lang.Class object. Does not have to be MT safe.
|
|
|
4005 java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor);
|
|
|
4006 }
|
|
|
4007
|
|
|
4008 assert(resolved_constructor != NULL, "sanity check");
|
|
|
4009 methodHandle constructor = methodHandle(THREAD, resolved_constructor);
|
|
|
4010
|
|
|
4011 // We have an initialized instanceKlass with a default constructor
|
|
|
4012 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)));
|
|
|
4013 assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check");
|
|
|
4014
|
|
|
4015 // Do security check
|
|
|
4016 klassOop caller_klass = NULL;
|
|
|
4017 if (UsePrivilegedStack) {
|
|
|
4018 caller_klass = thread->security_get_caller_class(2);
|
|
|
4019
|
|
|
4020 if (!Reflection::verify_class_access(caller_klass, klass(), false) ||
|
|
|
4021 !Reflection::verify_field_access(caller_klass,
|
|
|
4022 klass(),
|
|
|
4023 klass(),
|
|
|
4024 constructor->access_flags(),
|
|
|
4025 false,
|
|
|
4026 true)) {
|
|
|
4027 ResourceMark rm(THREAD);
|
|
|
4028 THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name());
|
|
|
4029 }
|
|
|
4030 }
|
|
|
4031
|
|
|
4032 // Allocate object and call constructor
|
|
|
4033 Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
|
|
|
4034 JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL);
|
|
|
4035
|
|
|
4036 jobject res = JNIHandles::make_local(env, receiver());
|
|
|
4037 if (JvmtiExport::should_post_vm_object_alloc()) {
|
|
|
4038 JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver());
|
|
|
4039 }
|
|
|
4040 return res;
|
|
|
4041 JVM_END
|
|
|
4042
|
|
|
4043
|
|
|
4044 // Field ////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
4045
|
|
|
4046 JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj))
|
|
|
4047 JVMWrapper("JVM_GetField");
|
|
|
4048 JvmtiVMObjectAllocEventCollector oam;
|
|
|
4049 Handle field_mirror(thread, JNIHandles::resolve(field));
|
|
|
4050 Handle receiver (thread, JNIHandles::resolve(obj));
|
|
|
4051 fieldDescriptor fd;
|
|
|
4052 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL);
|
|
|
4053 jvalue value;
|
|
|
4054 BasicType type = Reflection::field_get(&value, &fd, receiver);
|
|
|
4055 oop box = Reflection::box(&value, type, CHECK_NULL);
|
|
|
4056 return JNIHandles::make_local(env, box);
|
|
|
4057 JVM_END
|
|
|
4058
|
|
|
4059
|
|
|
4060 JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode))
|
|
|
4061 JVMWrapper("JVM_GetPrimitiveField");
|
|
|
4062 Handle field_mirror(thread, JNIHandles::resolve(field));
|
|
|
4063 Handle receiver (thread, JNIHandles::resolve(obj));
|
|
|
4064 fieldDescriptor fd;
|
|
|
4065 jvalue value;
|
|
|
4066 value.j = 0;
|
|
|
4067 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value));
|
|
|
4068 BasicType type = Reflection::field_get(&value, &fd, receiver);
|
|
|
4069 BasicType wide_type = (BasicType) wCode;
|
|
|
4070 if (type != wide_type) {
|
|
|
4071 Reflection::widen(&value, type, wide_type, CHECK_(value));
|
|
|
4072 }
|
|
|
4073 return value;
|
|
|
4074 JVM_END // should really be JVM_END, but that doesn't work for union types!
|
|
|
4075
|
|
|
4076
|
|
|
4077 JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val))
|
|
|
4078 JVMWrapper("JVM_SetField");
|
|
|
4079 Handle field_mirror(thread, JNIHandles::resolve(field));
|
|
|
4080 Handle receiver (thread, JNIHandles::resolve(obj));
|
|
|
4081 oop box = JNIHandles::resolve(val);
|
|
|
4082 fieldDescriptor fd;
|
|
|
4083 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK);
|
|
|
4084 BasicType field_type = fd.field_type();
|
|
|
4085 jvalue value;
|
|
|
4086 BasicType value_type;
|
|
|
4087 if (field_type == T_OBJECT || field_type == T_ARRAY) {
|
|
|
4088 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array
|
|
|
4089 value_type = Reflection::unbox_for_regular_object(box, &value);
|
|
|
4090 Reflection::field_set(&value, &fd, receiver, field_type, CHECK);
|
|
|
4091 } else {
|
|
|
4092 value_type = Reflection::unbox_for_primitive(box, &value, CHECK);
|
|
|
4093 Reflection::field_set(&value, &fd, receiver, value_type, CHECK);
|
|
|
4094 }
|
|
|
4095 JVM_END
|
|
|
4096
|
|
|
4097
|
|
|
4098 JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode))
|
|
|
4099 JVMWrapper("JVM_SetPrimitiveField");
|
|
|
4100 Handle field_mirror(thread, JNIHandles::resolve(field));
|
|
|
4101 Handle receiver (thread, JNIHandles::resolve(obj));
|
|
|
4102 fieldDescriptor fd;
|
|
|
4103 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK);
|
|
|
4104 BasicType value_type = (BasicType) vCode;
|
|
|
4105 Reflection::field_set(&v, &fd, receiver, value_type, CHECK);
|
|
|
4106 JVM_END
|
|
|
4107
|
|
|
4108
|
|
|
4109 // Method ///////////////////////////////////////////////////////////////////////////////////////////
|
|
|
4110
|
|
|
4111 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0))
|
|
|
4112 JVMWrapper("JVM_InvokeMethod");
|
|
|
4113 Handle method_handle;
|
|
|
4114 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) {
|
|
|
4115 method_handle = Handle(THREAD, JNIHandles::resolve(method));
|
|
|
4116 Handle receiver(THREAD, JNIHandles::resolve(obj));
|
|
|
4117 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
|
|
|
4118 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL);
|
|
|
4119 jobject res = JNIHandles::make_local(env, result);
|
|
|
4120 if (JvmtiExport::should_post_vm_object_alloc()) {
|
|
|
4121 oop ret_type = java_lang_reflect_Method::return_type(method_handle());
|
|
|
4122 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!");
|
|
|
4123 if (java_lang_Class::is_primitive(ret_type)) {
|
|
|
4124 // Only for primitive type vm allocates memory for java object.
|
|
|
4125 // See box() method.
|
|
|
4126 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result);
|
|
|
4127 }
|
|
|
4128 }
|
|
|
4129 return res;
|
|
|
4130 } else {
|
|
|
4131 THROW_0(vmSymbols::java_lang_StackOverflowError());
|
|
|
4132 }
|
|
|
4133 JVM_END
|
|
|
4134
|
|
|
4135
|
|
|
4136 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0))
|
|
|
4137 JVMWrapper("JVM_NewInstanceFromConstructor");
|
|
|
4138 oop constructor_mirror = JNIHandles::resolve(c);
|
|
|
4139 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
|
|
|
4140 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL);
|
|
|
4141 jobject res = JNIHandles::make_local(env, result);
|
|
|
4142 if (JvmtiExport::should_post_vm_object_alloc()) {
|
|
|
4143 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result);
|
|
|
4144 }
|
|
|
4145 return res;
|
|
|
4146 JVM_END
|
|
|
4147
|
|
|
4148 #endif /* SUPPORT_OLD_REFLECTION */
|
|
|
4149
|
|
|
4150 // Atomic ///////////////////////////////////////////////////////////////////////////////////////////
|
|
|
4151
|
|
|
4152 JVM_LEAF(jboolean, JVM_SupportsCX8())
|
|
|
4153 JVMWrapper("JVM_SupportsCX8");
|
|
|
4154 return VM_Version::supports_cx8();
|
|
|
4155 JVM_END
|
|
|
4156
|
|
|
4157
|
|
|
4158 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal))
|
|
|
4159 JVMWrapper("JVM_CX8Field");
|
|
|
4160 jlong res;
|
|
|
4161 oop o = JNIHandles::resolve(obj);
|
|
|
4162 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid);
|
|
|
4163 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs);
|
|
|
4164
|
|
|
4165 assert(VM_Version::supports_cx8(), "cx8 not supported");
|
|
|
4166 res = Atomic::cmpxchg(newVal, addr, oldVal);
|
|
|
4167
|
|
|
4168 return res == oldVal;
|
|
|
4169 JVM_END
|
|
|
4170
|
|
|
4171 // Returns an array of all live Thread objects (VM internal JavaThreads,
|
|
|
4172 // jvmti agent threads, and JNI attaching threads are skipped)
|
|
|
4173 // See CR 6404306 regarding JNI attaching threads
|
|
|
4174 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy))
|
|
|
4175 ResourceMark rm(THREAD);
|
|
|
4176 ThreadsListEnumerator tle(THREAD, false, false);
|
|
|
4177 JvmtiVMObjectAllocEventCollector oam;
|
|
|
4178
|
|
|
4179 int num_threads = tle.num_threads();
|
|
|
4180 objArrayOop r = oopFactory::new_objArray(SystemDictionary::thread_klass(), num_threads, CHECK_NULL);
|
|
|
4181 objArrayHandle threads_ah(THREAD, r);
|
|
|
4182
|
|
|
4183 for (int i = 0; i < num_threads; i++) {
|
|
|
4184 Handle h = tle.get_threadObj(i);
|
|
|
4185 threads_ah->obj_at_put(i, h());
|
|
|
4186 }
|
|
|
4187
|
|
|
4188 return (jobjectArray) JNIHandles::make_local(env, threads_ah());
|
|
|
4189 JVM_END
|
|
|
4190
|
|
|
4191
|
|
|
4192 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods
|
|
|
4193 // Return StackTraceElement[][], each element is the stack trace of a thread in
|
|
|
4194 // the corresponding entry in the given threads array
|
|
|
4195 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads))
|
|
|
4196 JVMWrapper("JVM_DumpThreads");
|
|
|
4197 JvmtiVMObjectAllocEventCollector oam;
|
|
|
4198
|
|
|
4199 // Check if threads is null
|
|
|
4200 if (threads == NULL) {
|
|
|
4201 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
|
|
|
4202 }
|
|
|
4203
|
|
|
4204 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads));
|
|
|
4205 objArrayHandle ah(THREAD, a);
|
|
|
4206 int num_threads = ah->length();
|
|
|
4207 // check if threads is non-empty array
|
|
|
4208 if (num_threads == 0) {
|
|
|
4209 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0);
|
|
|
4210 }
|
|
|
4211
|
|
|
4212 // check if threads is not an array of objects of Thread class
|
|
|
4213 klassOop k = objArrayKlass::cast(ah->klass())->element_klass();
|
|
|
4214 if (k != SystemDictionary::thread_klass()) {
|
|
|
4215 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0);
|
|
|
4216 }
|
|
|
4217
|
|
|
4218 ResourceMark rm(THREAD);
|
|
|
4219
|
|
|
4220 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
|
|
|
4221 for (int i = 0; i < num_threads; i++) {
|
|
|
4222 oop thread_obj = ah->obj_at(i);
|
|
|
4223 instanceHandle h(THREAD, (instanceOop) thread_obj);
|
|
|
4224 thread_handle_array->append(h);
|
|
|
4225 }
|
|
|
4226
|
|
|
4227 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL);
|
|
|
4228 return (jobjectArray)JNIHandles::make_local(env, stacktraces());
|
|
|
4229
|
|
|
4230 JVM_END
|
|
|
4231
|
|
|
4232 // JVM monitoring and management support
|
|
|
4233 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version))
|
|
|
4234 return Management::get_jmm_interface(version);
|
|
|
4235 JVM_END
|
|
|
4236
|
|
|
4237 // com.sun.tools.attach.VirtualMachine agent properties support
|
|
|
4238 //
|
|
|
4239 // Initialize the agent properties with the properties maintained in the VM
|
|
|
4240 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties))
|
|
|
4241 JVMWrapper("JVM_InitAgentProperties");
|
|
|
4242 ResourceMark rm;
|
|
|
4243
|
|
|
4244 Handle props(THREAD, JNIHandles::resolve_non_null(properties));
|
|
|
4245
|
|
|
4246 PUTPROP(props, "sun.java.command", Arguments::java_command());
|
|
|
4247 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags());
|
|
|
4248 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args());
|
|
|
4249 return properties;
|
|
|
4250 JVM_END
|
|
|
4251
|
|
|
4252 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass))
|
|
|
4253 {
|
|
|
4254 JVMWrapper("JVM_GetEnclosingMethodInfo");
|
|
|
4255 JvmtiVMObjectAllocEventCollector oam;
|
|
|
4256
|
|
|
4257 if (ofClass == NULL) {
|
|
|
4258 return NULL;
|
|
|
4259 }
|
|
|
4260 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass));
|
|
|
4261 // Special handling for primitive objects
|
|
|
4262 if (java_lang_Class::is_primitive(mirror())) {
|
|
|
4263 return NULL;
|
|
|
4264 }
|
|
|
4265 klassOop k = java_lang_Class::as_klassOop(mirror());
|
|
|
4266 if (!Klass::cast(k)->oop_is_instance()) {
|
|
|
4267 return NULL;
|
|
|
4268 }
|
|
|
4269 instanceKlassHandle ik_h(THREAD, k);
|
|
|
4270 int encl_method_class_idx = ik_h->enclosing_method_class_index();
|
|
|
4271 if (encl_method_class_idx == 0) {
|
|
|
4272 return NULL;
|
|
|
4273 }
|
|
|
4274 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::object_klass(), 3, CHECK_NULL);
|
|
|
4275 objArrayHandle dest(THREAD, dest_o);
|
|
|
4276 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL);
|
|
|
4277 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror());
|
|
|
4278 int encl_method_method_idx = ik_h->enclosing_method_method_index();
|
|
|
4279 if (encl_method_method_idx != 0) {
|
|
|
4280 symbolOop sym_o = ik_h->constants()->symbol_at(
|
|
|
4281 extract_low_short_from_int(
|
|
|
4282 ik_h->constants()->name_and_type_at(encl_method_method_idx)));
|
|
|
4283 symbolHandle sym(THREAD, sym_o);
|
|
|
4284 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
|
|
|
4285 dest->obj_at_put(1, str());
|
|
|
4286 sym_o = ik_h->constants()->symbol_at(
|
|
|
4287 extract_high_short_from_int(
|
|
|
4288 ik_h->constants()->name_and_type_at(encl_method_method_idx)));
|
|
|
4289 sym = symbolHandle(THREAD, sym_o);
|
|
|
4290 str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
|
|
|
4291 dest->obj_at_put(2, str());
|
|
|
4292 }
|
|
|
4293 return (jobjectArray) JNIHandles::make_local(dest());
|
|
|
4294 }
|
|
|
4295 JVM_END
|
|
|
4296
|
|
|
4297 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env,
|
|
|
4298 jint javaThreadState))
|
|
|
4299 {
|
|
|
4300 // If new thread states are added in future JDK and VM versions,
|
|
|
4301 // this should check if the JDK version is compatible with thread
|
|
|
4302 // states supported by the VM. Return NULL if not compatible.
|
|
|
4303 //
|
|
|
4304 // This function must map the VM java_lang_Thread::ThreadStatus
|
|
|
4305 // to the Java thread state that the JDK supports.
|
|
|
4306 //
|
|
|
4307
|
|
|
4308 typeArrayHandle values_h;
|
|
|
4309 switch (javaThreadState) {
|
|
|
4310 case JAVA_THREAD_STATE_NEW : {
|
|
|
4311 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL);
|
|
|
4312 values_h = typeArrayHandle(THREAD, r);
|
|
|
4313 values_h->int_at_put(0, java_lang_Thread::NEW);
|
|
|
4314 break;
|
|
|
4315 }
|
|
|
4316 case JAVA_THREAD_STATE_RUNNABLE : {
|
|
|
4317 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL);
|
|
|
4318 values_h = typeArrayHandle(THREAD, r);
|
|
|
4319 values_h->int_at_put(0, java_lang_Thread::RUNNABLE);
|
|
|
4320 break;
|
|
|
4321 }
|
|
|
4322 case JAVA_THREAD_STATE_BLOCKED : {
|
|
|
4323 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL);
|
|
|
4324 values_h = typeArrayHandle(THREAD, r);
|
|
|
4325 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER);
|
|
|
4326 break;
|
|
|
4327 }
|
|
|
4328 case JAVA_THREAD_STATE_WAITING : {
|
|
|
4329 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL);
|
|
|
4330 values_h = typeArrayHandle(THREAD, r);
|
|
|
4331 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT);
|
|
|
4332 values_h->int_at_put(1, java_lang_Thread::PARKED);
|
|
|
4333 break;
|
|
|
4334 }
|
|
|
4335 case JAVA_THREAD_STATE_TIMED_WAITING : {
|
|
|
4336 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL);
|
|
|
4337 values_h = typeArrayHandle(THREAD, r);
|
|
|
4338 values_h->int_at_put(0, java_lang_Thread::SLEEPING);
|
|
|
4339 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED);
|
|
|
4340 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED);
|
|
|
4341 break;
|
|
|
4342 }
|
|
|
4343 case JAVA_THREAD_STATE_TERMINATED : {
|
|
|
4344 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL);
|
|
|
4345 values_h = typeArrayHandle(THREAD, r);
|
|
|
4346 values_h->int_at_put(0, java_lang_Thread::TERMINATED);
|
|
|
4347 break;
|
|
|
4348 }
|
|
|
4349 default:
|
|
|
4350 // Unknown state - probably incompatible JDK version
|
|
|
4351 return NULL;
|
|
|
4352 }
|
|
|
4353
|
|
|
4354 return (jintArray) JNIHandles::make_local(env, values_h());
|
|
|
4355 }
|
|
|
4356 JVM_END
|
|
|
4357
|
|
|
4358
|
|
|
4359 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env,
|
|
|
4360 jint javaThreadState,
|
|
|
4361 jintArray values))
|
|
|
4362 {
|
|
|
4363 // If new thread states are added in future JDK and VM versions,
|
|
|
4364 // this should check if the JDK version is compatible with thread
|
|
|
4365 // states supported by the VM. Return NULL if not compatible.
|
|
|
4366 //
|
|
|
4367 // This function must map the VM java_lang_Thread::ThreadStatus
|
|
|
4368 // to the Java thread state that the JDK supports.
|
|
|
4369 //
|
|
|
4370
|
|
|
4371 ResourceMark rm;
|
|
|
4372
|
|
|
4373 // Check if threads is null
|
|
|
4374 if (values == NULL) {
|
|
|
4375 THROW_(vmSymbols::java_lang_NullPointerException(), 0);
|
|
|
4376 }
|
|
|
4377
|
|
|
4378 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values));
|
|
|
4379 typeArrayHandle values_h(THREAD, v);
|
|
|
4380
|
|
|
4381 objArrayHandle names_h;
|
|
|
4382 switch (javaThreadState) {
|
|
|
4383 case JAVA_THREAD_STATE_NEW : {
|
|
|
4384 assert(values_h->length() == 1 &&
|
|
|
4385 values_h->int_at(0) == java_lang_Thread::NEW,
|
|
|
4386 "Invalid threadStatus value");
|
|
|
4387
|
|
|
4388 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4389 1, /* only 1 substate */
|
|
|
4390 CHECK_NULL);
|
|
|
4391 names_h = objArrayHandle(THREAD, r);
|
|
|
4392 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL);
|
|
|
4393 names_h->obj_at_put(0, name());
|
|
|
4394 break;
|
|
|
4395 }
|
|
|
4396 case JAVA_THREAD_STATE_RUNNABLE : {
|
|
|
4397 assert(values_h->length() == 1 &&
|
|
|
4398 values_h->int_at(0) == java_lang_Thread::RUNNABLE,
|
|
|
4399 "Invalid threadStatus value");
|
|
|
4400
|
|
|
4401 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4402 1, /* only 1 substate */
|
|
|
4403 CHECK_NULL);
|
|
|
4404 names_h = objArrayHandle(THREAD, r);
|
|
|
4405 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL);
|
|
|
4406 names_h->obj_at_put(0, name());
|
|
|
4407 break;
|
|
|
4408 }
|
|
|
4409 case JAVA_THREAD_STATE_BLOCKED : {
|
|
|
4410 assert(values_h->length() == 1 &&
|
|
|
4411 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER,
|
|
|
4412 "Invalid threadStatus value");
|
|
|
4413
|
|
|
4414 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4415 1, /* only 1 substate */
|
|
|
4416 CHECK_NULL);
|
|
|
4417 names_h = objArrayHandle(THREAD, r);
|
|
|
4418 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL);
|
|
|
4419 names_h->obj_at_put(0, name());
|
|
|
4420 break;
|
|
|
4421 }
|
|
|
4422 case JAVA_THREAD_STATE_WAITING : {
|
|
|
4423 assert(values_h->length() == 2 &&
|
|
|
4424 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT &&
|
|
|
4425 values_h->int_at(1) == java_lang_Thread::PARKED,
|
|
|
4426 "Invalid threadStatus value");
|
|
|
4427 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4428 2, /* number of substates */
|
|
|
4429 CHECK_NULL);
|
|
|
4430 names_h = objArrayHandle(THREAD, r);
|
|
|
4431 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT",
|
|
|
4432 CHECK_NULL);
|
|
|
4433 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED",
|
|
|
4434 CHECK_NULL);
|
|
|
4435 names_h->obj_at_put(0, name0());
|
|
|
4436 names_h->obj_at_put(1, name1());
|
|
|
4437 break;
|
|
|
4438 }
|
|
|
4439 case JAVA_THREAD_STATE_TIMED_WAITING : {
|
|
|
4440 assert(values_h->length() == 3 &&
|
|
|
4441 values_h->int_at(0) == java_lang_Thread::SLEEPING &&
|
|
|
4442 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED &&
|
|
|
4443 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED,
|
|
|
4444 "Invalid threadStatus value");
|
|
|
4445 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4446 3, /* number of substates */
|
|
|
4447 CHECK_NULL);
|
|
|
4448 names_h = objArrayHandle(THREAD, r);
|
|
|
4449 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING",
|
|
|
4450 CHECK_NULL);
|
|
|
4451 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT",
|
|
|
4452 CHECK_NULL);
|
|
|
4453 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED",
|
|
|
4454 CHECK_NULL);
|
|
|
4455 names_h->obj_at_put(0, name0());
|
|
|
4456 names_h->obj_at_put(1, name1());
|
|
|
4457 names_h->obj_at_put(2, name2());
|
|
|
4458 break;
|
|
|
4459 }
|
|
|
4460 case JAVA_THREAD_STATE_TERMINATED : {
|
|
|
4461 assert(values_h->length() == 1 &&
|
|
|
4462 values_h->int_at(0) == java_lang_Thread::TERMINATED,
|
|
|
4463 "Invalid threadStatus value");
|
|
|
4464 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
4465 1, /* only 1 substate */
|
|
|
4466 CHECK_NULL);
|
|
|
4467 names_h = objArrayHandle(THREAD, r);
|
|
|
4468 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL);
|
|
|
4469 names_h->obj_at_put(0, name());
|
|
|
4470 break;
|
|
|
4471 }
|
|
|
4472 default:
|
|
|
4473 // Unknown state - probably incompatible JDK version
|
|
|
4474 return NULL;
|
|
|
4475 }
|
|
|
4476 return (jobjectArray) JNIHandles::make_local(env, names_h());
|
|
|
4477 }
|
|
|
4478 JVM_END
|
|
|
4479
|
|
|
4480 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size))
|
|
|
4481 {
|
|
|
4482 memset(info, 0, sizeof(info_size));
|
|
|
4483
|
|
|
4484 info->jvm_version = Abstract_VM_Version::jvm_version();
|
|
|
4485 info->update_version = 0; /* 0 in HotSpot Express VM */
|
|
|
4486 info->special_update_version = 0; /* 0 in HotSpot Express VM */
|
|
|
4487
|
|
|
4488 // when we add a new capability in the jvm_version_info struct, we should also
|
|
|
4489 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat
|
|
|
4490 // counter defined in runtimeService.cpp.
|
|
|
4491 info->is_attachable = AttachListener::is_attach_supported();
|
|
|
4492 #ifdef KERNEL
|
|
|
4493 info->is_kernel_jvm = 1; // true;
|
|
|
4494 #else // KERNEL
|
|
|
4495 info->is_kernel_jvm = 0; // false;
|
|
|
4496 #endif // KERNEL
|
|
|
4497 }
|
|
|
4498 JVM_END
|
