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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "classfile/systemDictionary.hpp" |
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27 #include "classfile/vmSymbols.hpp" |
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28 #include "interpreter/bytecodeStream.hpp" |
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29 #include "interpreter/interpreter.hpp" |
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30 #include "jvmtifiles/jvmtiEnv.hpp" |
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31 #include "memory/resourceArea.hpp" |
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32 #include "memory/universe.inline.hpp" |
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33 #include "oops/instanceKlass.hpp" |
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34 #include "prims/jniCheck.hpp" |
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35 #include "prims/jvm_misc.hpp" |
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36 #include "prims/jvmtiAgentThread.hpp" |
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37 #include "prims/jvmtiClassFileReconstituter.hpp" |
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38 #include "prims/jvmtiCodeBlobEvents.hpp" |
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39 #include "prims/jvmtiExtensions.hpp" |
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40 #include "prims/jvmtiGetLoadedClasses.hpp" |
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41 #include "prims/jvmtiImpl.hpp" |
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42 #include "prims/jvmtiManageCapabilities.hpp" |
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43 #include "prims/jvmtiRawMonitor.hpp" |
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44 #include "prims/jvmtiRedefineClasses.hpp" |
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45 #include "prims/jvmtiTagMap.hpp" |
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46 #include "prims/jvmtiThreadState.inline.hpp" |
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47 #include "prims/jvmtiUtil.hpp" |
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48 #include "runtime/arguments.hpp" |
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49 #include "runtime/deoptimization.hpp" |
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50 #include "runtime/interfaceSupport.hpp" |
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51 #include "runtime/javaCalls.hpp" |
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52 #include "runtime/jfieldIDWorkaround.hpp" |
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53 #include "runtime/osThread.hpp" |
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54 #include "runtime/reflectionUtils.hpp" |
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55 #include "runtime/signature.hpp" |
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56 #include "runtime/thread.inline.hpp" |
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57 #include "runtime/vframe.hpp" |
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58 #include "runtime/vmThread.hpp" |
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59 #include "services/threadService.hpp" |
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60 #include "utilities/exceptions.hpp" |
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61 #include "utilities/preserveException.hpp" |
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62 |
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63 |
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64 #define FIXLATER 0 // REMOVE this when completed. |
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65 |
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66 // FIXLATER: hook into JvmtiTrace |
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67 #define TraceJVMTICalls false |
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68 |
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69 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
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70 } |
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71 |
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72 JvmtiEnv::~JvmtiEnv() { |
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73 } |
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74 |
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75 JvmtiEnv* |
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76 JvmtiEnv::create_a_jvmti(jint version) { |
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77 return new JvmtiEnv(version); |
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78 } |
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79 |
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80 // VM operation class to copy jni function table at safepoint. |
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81 // More than one java threads or jvmti agents may be reading/ |
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82 // modifying jni function tables. To reduce the risk of bad |
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83 // interaction b/w these threads it is copied at safepoint. |
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84 class VM_JNIFunctionTableCopier : public VM_Operation { |
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85 private: |
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86 const struct JNINativeInterface_ *_function_table; |
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87 public: |
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88 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { |
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89 _function_table = func_tbl; |
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90 }; |
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91 |
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92 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } |
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93 void doit() { |
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94 copy_jni_function_table(_function_table); |
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95 }; |
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96 }; |
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97 |
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98 // |
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99 // Do not change the "prefix" marker below, everything above it is copied |
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100 // unchanged into the filled stub, everything below is controlled by the |
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101 // stub filler (only method bodies are carried forward, and then only for |
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102 // functionality still in the spec). |
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103 // |
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104 // end file prefix |
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105 |
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106 // |
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107 // Memory Management functions |
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108 // |
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109 |
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110 // mem_ptr - pre-checked for NULL |
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111 jvmtiError |
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112 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { |
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113 return allocate(size, mem_ptr); |
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114 } /* end Allocate */ |
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115 |
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116 |
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117 // mem - NULL is a valid value, must be checked |
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118 jvmtiError |
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119 JvmtiEnv::Deallocate(unsigned char* mem) { |
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120 return deallocate(mem); |
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121 } /* end Deallocate */ |
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122 |
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123 // Threads_lock NOT held, java_thread not protected by lock |
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124 // java_thread - pre-checked |
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125 // data - NULL is a valid value, must be checked |
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126 jvmtiError |
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127 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { |
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128 JvmtiThreadState* state = java_thread->jvmti_thread_state(); |
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129 if (state == NULL) { |
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130 if (data == NULL) { |
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131 // leaving state unset same as data set to NULL |
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132 return JVMTI_ERROR_NONE; |
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133 } |
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134 // otherwise, create the state |
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135 state = JvmtiThreadState::state_for(java_thread); |
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136 if (state == NULL) { |
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137 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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138 } |
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139 } |
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140 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); |
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141 return JVMTI_ERROR_NONE; |
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142 } /* end SetThreadLocalStorage */ |
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143 |
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144 |
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145 // Threads_lock NOT held |
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146 // thread - NOT pre-checked |
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147 // data_ptr - pre-checked for NULL |
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148 jvmtiError |
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149 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { |
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150 JavaThread* current_thread = JavaThread::current(); |
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151 if (thread == NULL) { |
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152 JvmtiThreadState* state = current_thread->jvmti_thread_state(); |
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153 *data_ptr = (state == NULL) ? NULL : |
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154 state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
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155 } else { |
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156 |
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157 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition |
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158 // the thread to _thread_in_vm. However, when the TLS for a thread |
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159 // other than the current thread is required we need to transition |
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160 // from native so as to resolve the jthread. |
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161 |
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162 ThreadInVMfromNative __tiv(current_thread); |
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163 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
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164 debug_only(VMNativeEntryWrapper __vew;) |
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165 |
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166 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
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167 if (thread_oop == NULL) { |
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168 return JVMTI_ERROR_INVALID_THREAD; |
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169 } |
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170 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
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171 return JVMTI_ERROR_INVALID_THREAD; |
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172 } |
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173 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); |
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174 if (java_thread == NULL) { |
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175 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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176 } |
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177 JvmtiThreadState* state = java_thread->jvmti_thread_state(); |
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178 *data_ptr = (state == NULL) ? NULL : |
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179 state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
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180 } |
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181 return JVMTI_ERROR_NONE; |
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182 } /* end GetThreadLocalStorage */ |
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183 |
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184 // |
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185 // Class functions |
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186 // |
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187 |
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188 // class_count_ptr - pre-checked for NULL |
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189 // classes_ptr - pre-checked for NULL |
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190 jvmtiError |
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191 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { |
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192 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); |
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193 } /* end GetLoadedClasses */ |
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194 |
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195 |
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196 // initiating_loader - NULL is a valid value, must be checked |
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197 // class_count_ptr - pre-checked for NULL |
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198 // classes_ptr - pre-checked for NULL |
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199 jvmtiError |
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200 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { |
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201 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, |
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202 class_count_ptr, classes_ptr); |
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203 } /* end GetClassLoaderClasses */ |
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204 |
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205 // k_mirror - may be primitive, this must be checked |
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206 // is_modifiable_class_ptr - pre-checked for NULL |
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207 jvmtiError |
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208 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { |
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209 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? |
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210 JNI_TRUE : JNI_FALSE; |
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211 return JVMTI_ERROR_NONE; |
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212 } /* end IsModifiableClass */ |
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213 |
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214 // class_count - pre-checked to be greater than or equal to 0 |
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215 // classes - pre-checked for NULL |
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216 jvmtiError |
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217 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { |
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218 //TODO: add locking |
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219 |
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220 int index; |
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221 JavaThread* current_thread = JavaThread::current(); |
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222 ResourceMark rm(current_thread); |
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223 |
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224 jvmtiClassDefinition* class_definitions = |
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225 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); |
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226 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); |
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227 |
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228 for (index = 0; index < class_count; index++) { |
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229 HandleMark hm(current_thread); |
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230 |
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231 jclass jcls = classes[index]; |
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232 oop k_mirror = JNIHandles::resolve_external_guard(jcls); |
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233 if (k_mirror == NULL) { |
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234 return JVMTI_ERROR_INVALID_CLASS; |
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235 } |
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236 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
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237 return JVMTI_ERROR_INVALID_CLASS; |
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238 } |
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239 |
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240 if (java_lang_Class::is_primitive(k_mirror)) { |
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241 return JVMTI_ERROR_UNMODIFIABLE_CLASS; |
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242 } |
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243 |
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244 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
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245 KlassHandle klass(current_thread, k_oop); |
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246 |
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247 jint status = klass->jvmti_class_status(); |
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248 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
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249 return JVMTI_ERROR_INVALID_CLASS; |
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250 } |
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251 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
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252 return JVMTI_ERROR_UNMODIFIABLE_CLASS; |
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253 } |
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254 |
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255 instanceKlassHandle ikh(current_thread, k_oop); |
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256 if (ikh->get_cached_class_file_bytes() == NULL) { |
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257 // Not cached, we need to reconstitute the class file from the |
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258 // VM representation. We don't attach the reconstituted class |
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259 // bytes to the InstanceKlass here because they have not been |
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260 // validated and we're not at a safepoint. |
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261 constantPoolHandle constants(current_thread, ikh->constants()); |
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262 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
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263 |
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264 JvmtiClassFileReconstituter reconstituter(ikh); |
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265 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
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266 return reconstituter.get_error(); |
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267 } |
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268 |
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269 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); |
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270 class_definitions[index].class_bytes = (unsigned char*) |
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271 reconstituter.class_file_bytes(); |
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272 } else { |
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273 // it is cached, get it from the cache |
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274 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); |
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275 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); |
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276 } |
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277 class_definitions[index].klass = jcls; |
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278 } |
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279 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); |
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280 VMThread::execute(&op); |
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281 return (op.check_error()); |
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282 } /* end RetransformClasses */ |
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283 |
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284 |
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285 // class_count - pre-checked to be greater than or equal to 0 |
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286 // class_definitions - pre-checked for NULL |
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287 jvmtiError |
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288 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { |
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289 //TODO: add locking |
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290 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); |
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291 VMThread::execute(&op); |
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292 return (op.check_error()); |
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293 } /* end RedefineClasses */ |
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294 |
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295 |
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296 // |
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297 // Object functions |
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298 // |
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299 |
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300 // size_ptr - pre-checked for NULL |
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301 jvmtiError |
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302 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { |
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303 oop mirror = JNIHandles::resolve_external_guard(object); |
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304 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
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305 |
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306 if (mirror->klass() == SystemDictionary::Class_klass() && |
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307 !java_lang_Class::is_primitive(mirror)) { |
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308 Klass* k = java_lang_Class::as_Klass(mirror); |
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309 assert(k != NULL, "class for non-primitive mirror must exist"); |
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310 *size_ptr = (jlong)k->size() * wordSize; |
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311 } else { |
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312 *size_ptr = (jlong)mirror->size() * wordSize; |
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313 } |
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314 return JVMTI_ERROR_NONE; |
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315 } /* end GetObjectSize */ |
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316 |
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317 // |
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318 // Method functions |
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319 // |
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320 |
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321 // prefix - NULL is a valid value, must be checked |
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322 jvmtiError |
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323 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { |
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324 return prefix == NULL? |
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325 SetNativeMethodPrefixes(0, NULL) : |
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326 SetNativeMethodPrefixes(1, (char**)&prefix); |
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327 } /* end SetNativeMethodPrefix */ |
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328 |
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329 |
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330 // prefix_count - pre-checked to be greater than or equal to 0 |
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331 // prefixes - pre-checked for NULL |
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332 jvmtiError |
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333 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { |
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334 // Have to grab JVMTI thread state lock to be sure that some thread |
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335 // isn't accessing the prefixes at the same time we are setting them. |
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336 // No locks during VM bring-up. |
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337 if (Threads::number_of_threads() == 0) { |
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338 return set_native_method_prefixes(prefix_count, prefixes); |
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339 } else { |
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340 MutexLocker mu(JvmtiThreadState_lock); |
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341 return set_native_method_prefixes(prefix_count, prefixes); |
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342 } |
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343 } /* end SetNativeMethodPrefixes */ |
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344 |
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345 // |
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346 // Event Management functions |
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347 // |
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348 |
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349 // callbacks - NULL is a valid value, must be checked |
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350 // size_of_callbacks - pre-checked to be greater than or equal to 0 |
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351 jvmtiError |
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352 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { |
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353 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); |
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354 return JVMTI_ERROR_NONE; |
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355 } /* end SetEventCallbacks */ |
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356 |
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357 |
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358 // event_thread - NULL is a valid value, must be checked |
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359 jvmtiError |
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360 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { |
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361 JavaThread* java_thread = NULL; |
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362 if (event_thread != NULL) { |
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363 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); |
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364 if (thread_oop == NULL) { |
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365 return JVMTI_ERROR_INVALID_THREAD; |
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366 } |
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367 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
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368 return JVMTI_ERROR_INVALID_THREAD; |
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369 } |
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370 java_thread = java_lang_Thread::thread(thread_oop); |
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371 if (java_thread == NULL) { |
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372 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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373 } |
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374 } |
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375 |
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376 // event_type must be valid |
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377 if (!JvmtiEventController::is_valid_event_type(event_type)) { |
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378 return JVMTI_ERROR_INVALID_EVENT_TYPE; |
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379 } |
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380 |
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381 // global events cannot be controlled at thread level. |
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382 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { |
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383 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
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384 } |
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385 |
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386 bool enabled = (mode == JVMTI_ENABLE); |
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387 |
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388 // assure that needed capabilities are present |
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389 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { |
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390 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
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391 } |
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392 |
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393 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { |
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394 record_class_file_load_hook_enabled(); |
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395 } |
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396 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); |
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397 |
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398 return JVMTI_ERROR_NONE; |
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399 } /* end SetEventNotificationMode */ |
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400 |
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401 // |
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402 // Capability functions |
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403 // |
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404 |
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405 // capabilities_ptr - pre-checked for NULL |
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406 jvmtiError |
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407 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { |
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408 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), |
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409 get_prohibited_capabilities(), |
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410 capabilities_ptr); |
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411 return JVMTI_ERROR_NONE; |
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412 } /* end GetPotentialCapabilities */ |
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413 |
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414 |
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415 // capabilities_ptr - pre-checked for NULL |
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416 jvmtiError |
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417 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
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418 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), |
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419 get_prohibited_capabilities(), |
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420 capabilities_ptr, |
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421 get_capabilities()); |
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422 } /* end AddCapabilities */ |
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423 |
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424 |
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425 // capabilities_ptr - pre-checked for NULL |
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426 jvmtiError |
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427 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
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428 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); |
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429 return JVMTI_ERROR_NONE; |
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430 } /* end RelinquishCapabilities */ |
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431 |
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432 |
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433 // capabilities_ptr - pre-checked for NULL |
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434 jvmtiError |
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435 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { |
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436 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); |
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437 return JVMTI_ERROR_NONE; |
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438 } /* end GetCapabilities */ |
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439 |
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440 // |
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441 // Class Loader Search functions |
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442 // |
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443 |
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444 // segment - pre-checked for NULL |
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445 jvmtiError |
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446 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { |
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447 jvmtiPhase phase = get_phase(); |
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448 if (phase == JVMTI_PHASE_ONLOAD) { |
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449 Arguments::append_sysclasspath(segment); |
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450 return JVMTI_ERROR_NONE; |
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451 } else if (use_version_1_0_semantics()) { |
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452 // This JvmtiEnv requested version 1.0 semantics and this function |
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453 // is only allowed in the ONLOAD phase in version 1.0 so we need to |
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454 // return an error here. |
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455 return JVMTI_ERROR_WRONG_PHASE; |
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456 } else if (phase == JVMTI_PHASE_LIVE) { |
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457 // The phase is checked by the wrapper that called this function, |
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458 // but this thread could be racing with the thread that is |
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459 // terminating the VM so we check one more time. |
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460 |
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461 // create the zip entry |
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462 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); |
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463 if (zip_entry == NULL) { |
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464 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
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465 } |
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466 |
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467 // lock the loader |
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468 Thread* thread = Thread::current(); |
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469 HandleMark hm; |
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470 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); |
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471 |
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472 ObjectLocker ol(loader_lock, thread); |
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473 |
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474 // add the jar file to the bootclasspath |
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475 if (TraceClassLoading) { |
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476 tty->print_cr("[Opened %s]", zip_entry->name()); |
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477 } |
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478 ClassLoader::add_to_list(zip_entry); |
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479 return JVMTI_ERROR_NONE; |
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480 } else { |
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481 return JVMTI_ERROR_WRONG_PHASE; |
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482 } |
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483 |
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484 } /* end AddToBootstrapClassLoaderSearch */ |
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485 |
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486 |
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487 // segment - pre-checked for NULL |
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488 jvmtiError |
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489 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { |
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490 jvmtiPhase phase = get_phase(); |
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491 |
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492 if (phase == JVMTI_PHASE_ONLOAD) { |
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493 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { |
|
494 if (strcmp("java.class.path", p->key()) == 0) { |
|
495 p->append_value(segment); |
|
496 break; |
|
497 } |
|
498 } |
|
499 return JVMTI_ERROR_NONE; |
|
500 } else if (phase == JVMTI_PHASE_LIVE) { |
|
501 // The phase is checked by the wrapper that called this function, |
|
502 // but this thread could be racing with the thread that is |
|
503 // terminating the VM so we check one more time. |
|
504 HandleMark hm; |
|
505 |
|
506 // create the zip entry (which will open the zip file and hence |
|
507 // check that the segment is indeed a zip file). |
|
508 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); |
|
509 if (zip_entry == NULL) { |
|
510 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
511 } |
|
512 delete zip_entry; // no longer needed |
|
513 |
|
514 // lock the loader |
|
515 Thread* THREAD = Thread::current(); |
|
516 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); |
|
517 |
|
518 ObjectLocker ol(loader, THREAD); |
|
519 |
|
520 // need the path as java.lang.String |
|
521 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
|
522 if (HAS_PENDING_EXCEPTION) { |
|
523 CLEAR_PENDING_EXCEPTION; |
|
524 return JVMTI_ERROR_INTERNAL; |
|
525 } |
|
526 |
|
527 instanceKlassHandle loader_ik(THREAD, loader->klass()); |
|
528 |
|
529 // Invoke the appendToClassPathForInstrumentation method - if the method |
|
530 // is not found it means the loader doesn't support adding to the class path |
|
531 // in the live phase. |
|
532 { |
|
533 JavaValue res(T_VOID); |
|
534 JavaCalls::call_special(&res, |
|
535 loader, |
|
536 loader_ik, |
|
537 vmSymbols::appendToClassPathForInstrumentation_name(), |
|
538 vmSymbols::appendToClassPathForInstrumentation_signature(), |
|
539 path, |
|
540 THREAD); |
|
541 if (HAS_PENDING_EXCEPTION) { |
|
542 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
|
543 CLEAR_PENDING_EXCEPTION; |
|
544 |
|
545 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { |
|
546 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; |
|
547 } else { |
|
548 return JVMTI_ERROR_INTERNAL; |
|
549 } |
|
550 } |
|
551 } |
|
552 |
|
553 return JVMTI_ERROR_NONE; |
|
554 } else { |
|
555 return JVMTI_ERROR_WRONG_PHASE; |
|
556 } |
|
557 } /* end AddToSystemClassLoaderSearch */ |
|
558 |
|
559 // |
|
560 // General functions |
|
561 // |
|
562 |
|
563 // phase_ptr - pre-checked for NULL |
|
564 jvmtiError |
|
565 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { |
|
566 *phase_ptr = get_phase(); |
|
567 return JVMTI_ERROR_NONE; |
|
568 } /* end GetPhase */ |
|
569 |
|
570 |
|
571 jvmtiError |
|
572 JvmtiEnv::DisposeEnvironment() { |
|
573 dispose(); |
|
574 return JVMTI_ERROR_NONE; |
|
575 } /* end DisposeEnvironment */ |
|
576 |
|
577 |
|
578 // data - NULL is a valid value, must be checked |
|
579 jvmtiError |
|
580 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { |
|
581 set_env_local_storage(data); |
|
582 return JVMTI_ERROR_NONE; |
|
583 } /* end SetEnvironmentLocalStorage */ |
|
584 |
|
585 |
|
586 // data_ptr - pre-checked for NULL |
|
587 jvmtiError |
|
588 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { |
|
589 *data_ptr = (void*)get_env_local_storage(); |
|
590 return JVMTI_ERROR_NONE; |
|
591 } /* end GetEnvironmentLocalStorage */ |
|
592 |
|
593 // version_ptr - pre-checked for NULL |
|
594 jvmtiError |
|
595 JvmtiEnv::GetVersionNumber(jint* version_ptr) { |
|
596 *version_ptr = JVMTI_VERSION; |
|
597 return JVMTI_ERROR_NONE; |
|
598 } /* end GetVersionNumber */ |
|
599 |
|
600 |
|
601 // name_ptr - pre-checked for NULL |
|
602 jvmtiError |
|
603 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { |
|
604 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { |
|
605 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
606 } |
|
607 const char *name = JvmtiUtil::error_name(error); |
|
608 if (name == NULL) { |
|
609 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
610 } |
|
611 size_t len = strlen(name) + 1; |
|
612 jvmtiError err = allocate(len, (unsigned char**)name_ptr); |
|
613 if (err == JVMTI_ERROR_NONE) { |
|
614 memcpy(*name_ptr, name, len); |
|
615 } |
|
616 return err; |
|
617 } /* end GetErrorName */ |
|
618 |
|
619 |
|
620 jvmtiError |
|
621 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { |
|
622 switch (flag) { |
|
623 case JVMTI_VERBOSE_OTHER: |
|
624 // ignore |
|
625 break; |
|
626 case JVMTI_VERBOSE_CLASS: |
|
627 TraceClassLoading = value != 0; |
|
628 TraceClassUnloading = value != 0; |
|
629 break; |
|
630 case JVMTI_VERBOSE_GC: |
|
631 PrintGC = value != 0; |
|
632 break; |
|
633 case JVMTI_VERBOSE_JNI: |
|
634 PrintJNIResolving = value != 0; |
|
635 break; |
|
636 default: |
|
637 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
638 }; |
|
639 return JVMTI_ERROR_NONE; |
|
640 } /* end SetVerboseFlag */ |
|
641 |
|
642 |
|
643 // format_ptr - pre-checked for NULL |
|
644 jvmtiError |
|
645 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { |
|
646 *format_ptr = JVMTI_JLOCATION_JVMBCI; |
|
647 return JVMTI_ERROR_NONE; |
|
648 } /* end GetJLocationFormat */ |
|
649 |
|
650 // |
|
651 // Thread functions |
|
652 // |
|
653 |
|
654 // Threads_lock NOT held |
|
655 // thread - NOT pre-checked |
|
656 // thread_state_ptr - pre-checked for NULL |
|
657 jvmtiError |
|
658 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { |
|
659 jint state; |
|
660 oop thread_oop; |
|
661 JavaThread* thr; |
|
662 |
|
663 if (thread == NULL) { |
|
664 thread_oop = JavaThread::current()->threadObj(); |
|
665 } else { |
|
666 thread_oop = JNIHandles::resolve_external_guard(thread); |
|
667 } |
|
668 |
|
669 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
670 return JVMTI_ERROR_INVALID_THREAD; |
|
671 } |
|
672 |
|
673 // get most state bits |
|
674 state = (jint)java_lang_Thread::get_thread_status(thread_oop); |
|
675 |
|
676 // add more state bits |
|
677 thr = java_lang_Thread::thread(thread_oop); |
|
678 if (thr != NULL) { |
|
679 JavaThreadState jts = thr->thread_state(); |
|
680 |
|
681 if (thr->is_being_ext_suspended()) { |
|
682 state |= JVMTI_THREAD_STATE_SUSPENDED; |
|
683 } |
|
684 if (jts == _thread_in_native) { |
|
685 state |= JVMTI_THREAD_STATE_IN_NATIVE; |
|
686 } |
|
687 OSThread* osThread = thr->osthread(); |
|
688 if (osThread != NULL && osThread->interrupted()) { |
|
689 state |= JVMTI_THREAD_STATE_INTERRUPTED; |
|
690 } |
|
691 } |
|
692 |
|
693 *thread_state_ptr = state; |
|
694 return JVMTI_ERROR_NONE; |
|
695 } /* end GetThreadState */ |
|
696 |
|
697 |
|
698 // thread_ptr - pre-checked for NULL |
|
699 jvmtiError |
|
700 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { |
|
701 JavaThread* current_thread = JavaThread::current(); |
|
702 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); |
|
703 return JVMTI_ERROR_NONE; |
|
704 } /* end GetCurrentThread */ |
|
705 |
|
706 |
|
707 // threads_count_ptr - pre-checked for NULL |
|
708 // threads_ptr - pre-checked for NULL |
|
709 jvmtiError |
|
710 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { |
|
711 int nthreads = 0; |
|
712 Handle *thread_objs = NULL; |
|
713 ResourceMark rm; |
|
714 HandleMark hm; |
|
715 |
|
716 // enumerate threads (including agent threads) |
|
717 ThreadsListEnumerator tle(Thread::current(), true); |
|
718 nthreads = tle.num_threads(); |
|
719 *threads_count_ptr = nthreads; |
|
720 |
|
721 if (nthreads == 0) { |
|
722 *threads_ptr = NULL; |
|
723 return JVMTI_ERROR_NONE; |
|
724 } |
|
725 |
|
726 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); |
|
727 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); |
|
728 |
|
729 for (int i=0; i < nthreads; i++) { |
|
730 thread_objs[i] = Handle(tle.get_threadObj(i)); |
|
731 } |
|
732 |
|
733 // have to make global handles outside of Threads_lock |
|
734 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); |
|
735 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); |
|
736 |
|
737 *threads_ptr = jthreads; |
|
738 return JVMTI_ERROR_NONE; |
|
739 } /* end GetAllThreads */ |
|
740 |
|
741 |
|
742 // Threads_lock NOT held, java_thread not protected by lock |
|
743 // java_thread - pre-checked |
|
744 jvmtiError |
|
745 JvmtiEnv::SuspendThread(JavaThread* java_thread) { |
|
746 // don't allow hidden thread suspend request. |
|
747 if (java_thread->is_hidden_from_external_view()) { |
|
748 return (JVMTI_ERROR_NONE); |
|
749 } |
|
750 |
|
751 { |
|
752 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); |
|
753 if (java_thread->is_external_suspend()) { |
|
754 // don't allow nested external suspend requests. |
|
755 return (JVMTI_ERROR_THREAD_SUSPENDED); |
|
756 } |
|
757 if (java_thread->is_exiting()) { // thread is in the process of exiting |
|
758 return (JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
759 } |
|
760 java_thread->set_external_suspend(); |
|
761 } |
|
762 |
|
763 if (!JvmtiSuspendControl::suspend(java_thread)) { |
|
764 // the thread was in the process of exiting |
|
765 return (JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
766 } |
|
767 return JVMTI_ERROR_NONE; |
|
768 } /* end SuspendThread */ |
|
769 |
|
770 |
|
771 // request_count - pre-checked to be greater than or equal to 0 |
|
772 // request_list - pre-checked for NULL |
|
773 // results - pre-checked for NULL |
|
774 jvmtiError |
|
775 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
|
776 int needSafepoint = 0; // > 0 if we need a safepoint |
|
777 for (int i = 0; i < request_count; i++) { |
|
778 JavaThread *java_thread = get_JavaThread(request_list[i]); |
|
779 if (java_thread == NULL) { |
|
780 results[i] = JVMTI_ERROR_INVALID_THREAD; |
|
781 continue; |
|
782 } |
|
783 // the thread has not yet run or has exited (not on threads list) |
|
784 if (java_thread->threadObj() == NULL) { |
|
785 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
786 continue; |
|
787 } |
|
788 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { |
|
789 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
790 continue; |
|
791 } |
|
792 // don't allow hidden thread suspend request. |
|
793 if (java_thread->is_hidden_from_external_view()) { |
|
794 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
795 continue; |
|
796 } |
|
797 |
|
798 { |
|
799 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); |
|
800 if (java_thread->is_external_suspend()) { |
|
801 // don't allow nested external suspend requests. |
|
802 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; |
|
803 continue; |
|
804 } |
|
805 if (java_thread->is_exiting()) { // thread is in the process of exiting |
|
806 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
807 continue; |
|
808 } |
|
809 java_thread->set_external_suspend(); |
|
810 } |
|
811 if (java_thread->thread_state() == _thread_in_native) { |
|
812 // We need to try and suspend native threads here. Threads in |
|
813 // other states will self-suspend on their next transition. |
|
814 if (!JvmtiSuspendControl::suspend(java_thread)) { |
|
815 // The thread was in the process of exiting. Force another |
|
816 // safepoint to make sure that this thread transitions. |
|
817 needSafepoint++; |
|
818 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
819 continue; |
|
820 } |
|
821 } else { |
|
822 needSafepoint++; |
|
823 } |
|
824 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
825 } |
|
826 if (needSafepoint > 0) { |
|
827 VM_ForceSafepoint vfs; |
|
828 VMThread::execute(&vfs); |
|
829 } |
|
830 // per-thread suspend results returned via results parameter |
|
831 return JVMTI_ERROR_NONE; |
|
832 } /* end SuspendThreadList */ |
|
833 |
|
834 |
|
835 // Threads_lock NOT held, java_thread not protected by lock |
|
836 // java_thread - pre-checked |
|
837 jvmtiError |
|
838 JvmtiEnv::ResumeThread(JavaThread* java_thread) { |
|
839 // don't allow hidden thread resume request. |
|
840 if (java_thread->is_hidden_from_external_view()) { |
|
841 return JVMTI_ERROR_NONE; |
|
842 } |
|
843 |
|
844 if (!java_thread->is_being_ext_suspended()) { |
|
845 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
846 } |
|
847 |
|
848 if (!JvmtiSuspendControl::resume(java_thread)) { |
|
849 return JVMTI_ERROR_INTERNAL; |
|
850 } |
|
851 return JVMTI_ERROR_NONE; |
|
852 } /* end ResumeThread */ |
|
853 |
|
854 |
|
855 // request_count - pre-checked to be greater than or equal to 0 |
|
856 // request_list - pre-checked for NULL |
|
857 // results - pre-checked for NULL |
|
858 jvmtiError |
|
859 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
|
860 for (int i = 0; i < request_count; i++) { |
|
861 JavaThread *java_thread = get_JavaThread(request_list[i]); |
|
862 if (java_thread == NULL) { |
|
863 results[i] = JVMTI_ERROR_INVALID_THREAD; |
|
864 continue; |
|
865 } |
|
866 // don't allow hidden thread resume request. |
|
867 if (java_thread->is_hidden_from_external_view()) { |
|
868 results[i] = JVMTI_ERROR_NONE; // indicate successful resume |
|
869 continue; |
|
870 } |
|
871 if (!java_thread->is_being_ext_suspended()) { |
|
872 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
873 continue; |
|
874 } |
|
875 |
|
876 if (!JvmtiSuspendControl::resume(java_thread)) { |
|
877 results[i] = JVMTI_ERROR_INTERNAL; |
|
878 continue; |
|
879 } |
|
880 |
|
881 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
882 } |
|
883 // per-thread resume results returned via results parameter |
|
884 return JVMTI_ERROR_NONE; |
|
885 } /* end ResumeThreadList */ |
|
886 |
|
887 |
|
888 // Threads_lock NOT held, java_thread not protected by lock |
|
889 // java_thread - pre-checked |
|
890 jvmtiError |
|
891 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { |
|
892 oop e = JNIHandles::resolve_external_guard(exception); |
|
893 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); |
|
894 |
|
895 JavaThread::send_async_exception(java_thread->threadObj(), e); |
|
896 |
|
897 return JVMTI_ERROR_NONE; |
|
898 |
|
899 } /* end StopThread */ |
|
900 |
|
901 |
|
902 // Threads_lock NOT held |
|
903 // thread - NOT pre-checked |
|
904 jvmtiError |
|
905 JvmtiEnv::InterruptThread(jthread thread) { |
|
906 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
|
907 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
|
908 return JVMTI_ERROR_INVALID_THREAD; |
|
909 |
|
910 JavaThread* current_thread = JavaThread::current(); |
|
911 |
|
912 // Todo: this is a duplicate of JVM_Interrupt; share code in future |
|
913 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
914 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); |
|
915 // We need to re-resolve the java_thread, since a GC might have happened during the |
|
916 // acquire of the lock |
|
917 |
|
918 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); |
|
919 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
920 |
|
921 Thread::interrupt(java_thread); |
|
922 |
|
923 return JVMTI_ERROR_NONE; |
|
924 } /* end InterruptThread */ |
|
925 |
|
926 |
|
927 // Threads_lock NOT held |
|
928 // thread - NOT pre-checked |
|
929 // info_ptr - pre-checked for NULL |
|
930 jvmtiError |
|
931 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { |
|
932 ResourceMark rm; |
|
933 HandleMark hm; |
|
934 |
|
935 JavaThread* current_thread = JavaThread::current(); |
|
936 |
|
937 // if thread is NULL the current thread is used |
|
938 oop thread_oop; |
|
939 if (thread == NULL) { |
|
940 thread_oop = current_thread->threadObj(); |
|
941 } else { |
|
942 thread_oop = JNIHandles::resolve_external_guard(thread); |
|
943 } |
|
944 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
|
945 return JVMTI_ERROR_INVALID_THREAD; |
|
946 |
|
947 Handle thread_obj(current_thread, thread_oop); |
|
948 typeArrayHandle name; |
|
949 ThreadPriority priority; |
|
950 Handle thread_group; |
|
951 Handle context_class_loader; |
|
952 bool is_daemon; |
|
953 |
|
954 { MutexLocker mu(Threads_lock); |
|
955 |
|
956 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); |
|
957 priority = java_lang_Thread::priority(thread_obj()); |
|
958 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); |
|
959 is_daemon = java_lang_Thread::is_daemon(thread_obj()); |
|
960 |
|
961 oop loader = java_lang_Thread::context_class_loader(thread_obj()); |
|
962 context_class_loader = Handle(current_thread, loader); |
|
963 } |
|
964 { const char *n; |
|
965 |
|
966 if (name() != NULL) { |
|
967 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); |
|
968 } else { |
|
969 n = UNICODE::as_utf8(NULL, 0); |
|
970 } |
|
971 |
|
972 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); |
|
973 if (info_ptr->name == NULL) |
|
974 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
975 |
|
976 strcpy(info_ptr->name, n); |
|
977 } |
|
978 info_ptr->is_daemon = is_daemon; |
|
979 info_ptr->priority = priority; |
|
980 |
|
981 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : |
|
982 jni_reference(context_class_loader); |
|
983 info_ptr->thread_group = jni_reference(thread_group); |
|
984 |
|
985 return JVMTI_ERROR_NONE; |
|
986 } /* end GetThreadInfo */ |
|
987 |
|
988 |
|
989 // Threads_lock NOT held, java_thread not protected by lock |
|
990 // java_thread - pre-checked |
|
991 // owned_monitor_count_ptr - pre-checked for NULL |
|
992 // owned_monitors_ptr - pre-checked for NULL |
|
993 jvmtiError |
|
994 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { |
|
995 jvmtiError err = JVMTI_ERROR_NONE; |
|
996 JavaThread* calling_thread = JavaThread::current(); |
|
997 |
|
998 // growable array of jvmti monitors info on the C-heap |
|
999 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
|
1000 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
|
1001 |
|
1002 uint32_t debug_bits = 0; |
|
1003 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1004 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
|
1005 } else { |
|
1006 // JVMTI get monitors info at safepoint. Do not require target thread to |
|
1007 // be suspended. |
|
1008 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); |
|
1009 VMThread::execute(&op); |
|
1010 err = op.result(); |
|
1011 } |
|
1012 jint owned_monitor_count = owned_monitors_list->length(); |
|
1013 if (err == JVMTI_ERROR_NONE) { |
|
1014 if ((err = allocate(owned_monitor_count * sizeof(jobject *), |
|
1015 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { |
|
1016 // copy into the returned array |
|
1017 for (int i = 0; i < owned_monitor_count; i++) { |
|
1018 (*owned_monitors_ptr)[i] = |
|
1019 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
|
1020 } |
|
1021 *owned_monitor_count_ptr = owned_monitor_count; |
|
1022 } |
|
1023 } |
|
1024 // clean up. |
|
1025 for (int i = 0; i < owned_monitor_count; i++) { |
|
1026 deallocate((unsigned char*)owned_monitors_list->at(i)); |
|
1027 } |
|
1028 delete owned_monitors_list; |
|
1029 |
|
1030 return err; |
|
1031 } /* end GetOwnedMonitorInfo */ |
|
1032 |
|
1033 |
|
1034 // Threads_lock NOT held, java_thread not protected by lock |
|
1035 // java_thread - pre-checked |
|
1036 // monitor_info_count_ptr - pre-checked for NULL |
|
1037 // monitor_info_ptr - pre-checked for NULL |
|
1038 jvmtiError |
|
1039 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { |
|
1040 jvmtiError err = JVMTI_ERROR_NONE; |
|
1041 JavaThread* calling_thread = JavaThread::current(); |
|
1042 |
|
1043 // growable array of jvmti monitors info on the C-heap |
|
1044 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
|
1045 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
|
1046 |
|
1047 uint32_t debug_bits = 0; |
|
1048 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1049 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
|
1050 } else { |
|
1051 // JVMTI get owned monitors info at safepoint. Do not require target thread to |
|
1052 // be suspended. |
|
1053 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); |
|
1054 VMThread::execute(&op); |
|
1055 err = op.result(); |
|
1056 } |
|
1057 |
|
1058 jint owned_monitor_count = owned_monitors_list->length(); |
|
1059 if (err == JVMTI_ERROR_NONE) { |
|
1060 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), |
|
1061 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { |
|
1062 // copy to output array. |
|
1063 for (int i = 0; i < owned_monitor_count; i++) { |
|
1064 (*monitor_info_ptr)[i].monitor = |
|
1065 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
|
1066 (*monitor_info_ptr)[i].stack_depth = |
|
1067 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; |
|
1068 } |
|
1069 } |
|
1070 *monitor_info_count_ptr = owned_monitor_count; |
|
1071 } |
|
1072 |
|
1073 // clean up. |
|
1074 for (int i = 0; i < owned_monitor_count; i++) { |
|
1075 deallocate((unsigned char*)owned_monitors_list->at(i)); |
|
1076 } |
|
1077 delete owned_monitors_list; |
|
1078 |
|
1079 return err; |
|
1080 } /* end GetOwnedMonitorStackDepthInfo */ |
|
1081 |
|
1082 |
|
1083 // Threads_lock NOT held, java_thread not protected by lock |
|
1084 // java_thread - pre-checked |
|
1085 // monitor_ptr - pre-checked for NULL |
|
1086 jvmtiError |
|
1087 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { |
|
1088 jvmtiError err = JVMTI_ERROR_NONE; |
|
1089 uint32_t debug_bits = 0; |
|
1090 JavaThread* calling_thread = JavaThread::current(); |
|
1091 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1092 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); |
|
1093 } else { |
|
1094 // get contended monitor information at safepoint. |
|
1095 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); |
|
1096 VMThread::execute(&op); |
|
1097 err = op.result(); |
|
1098 } |
|
1099 return err; |
|
1100 } /* end GetCurrentContendedMonitor */ |
|
1101 |
|
1102 |
|
1103 // Threads_lock NOT held |
|
1104 // thread - NOT pre-checked |
|
1105 // proc - pre-checked for NULL |
|
1106 // arg - NULL is a valid value, must be checked |
|
1107 jvmtiError |
|
1108 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { |
|
1109 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
|
1110 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
1111 return JVMTI_ERROR_INVALID_THREAD; |
|
1112 } |
|
1113 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { |
|
1114 return JVMTI_ERROR_INVALID_PRIORITY; |
|
1115 } |
|
1116 |
|
1117 //Thread-self |
|
1118 JavaThread* current_thread = JavaThread::current(); |
|
1119 |
|
1120 Handle thread_hndl(current_thread, thread_oop); |
|
1121 { |
|
1122 MutexLocker mu(Threads_lock); // grab Threads_lock |
|
1123 |
|
1124 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); |
|
1125 |
|
1126 // At this point it may be possible that no osthread was created for the |
|
1127 // JavaThread due to lack of memory. |
|
1128 if (new_thread == NULL || new_thread->osthread() == NULL) { |
|
1129 if (new_thread) delete new_thread; |
|
1130 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1131 } |
|
1132 |
|
1133 java_lang_Thread::set_thread(thread_hndl(), new_thread); |
|
1134 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); |
|
1135 java_lang_Thread::set_daemon(thread_hndl()); |
|
1136 |
|
1137 new_thread->set_threadObj(thread_hndl()); |
|
1138 Threads::add(new_thread); |
|
1139 Thread::start(new_thread); |
|
1140 } // unlock Threads_lock |
|
1141 |
|
1142 return JVMTI_ERROR_NONE; |
|
1143 } /* end RunAgentThread */ |
|
1144 |
|
1145 // |
|
1146 // Thread Group functions |
|
1147 // |
|
1148 |
|
1149 // group_count_ptr - pre-checked for NULL |
|
1150 // groups_ptr - pre-checked for NULL |
|
1151 jvmtiError |
|
1152 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { |
|
1153 JavaThread* current_thread = JavaThread::current(); |
|
1154 |
|
1155 // Only one top level thread group now. |
|
1156 *group_count_ptr = 1; |
|
1157 |
|
1158 // Allocate memory to store global-refs to the thread groups. |
|
1159 // Assume this area is freed by caller. |
|
1160 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); |
|
1161 |
|
1162 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); |
|
1163 |
|
1164 // Convert oop to Handle, then convert Handle to global-ref. |
|
1165 { |
|
1166 HandleMark hm(current_thread); |
|
1167 Handle system_thread_group(current_thread, Universe::system_thread_group()); |
|
1168 *groups_ptr[0] = jni_reference(system_thread_group); |
|
1169 } |
|
1170 |
|
1171 return JVMTI_ERROR_NONE; |
|
1172 } /* end GetTopThreadGroups */ |
|
1173 |
|
1174 |
|
1175 // info_ptr - pre-checked for NULL |
|
1176 jvmtiError |
|
1177 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { |
|
1178 ResourceMark rm; |
|
1179 HandleMark hm; |
|
1180 |
|
1181 JavaThread* current_thread = JavaThread::current(); |
|
1182 |
|
1183 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); |
|
1184 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); |
|
1185 |
|
1186 typeArrayHandle name; |
|
1187 Handle parent_group; |
|
1188 bool is_daemon; |
|
1189 ThreadPriority max_priority; |
|
1190 |
|
1191 { MutexLocker mu(Threads_lock); |
|
1192 |
|
1193 name = typeArrayHandle(current_thread, |
|
1194 java_lang_ThreadGroup::name(group_obj())); |
|
1195 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); |
|
1196 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); |
|
1197 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); |
|
1198 } |
|
1199 |
|
1200 info_ptr->is_daemon = is_daemon; |
|
1201 info_ptr->max_priority = max_priority; |
|
1202 info_ptr->parent = jni_reference(parent_group); |
|
1203 |
|
1204 if (name() != NULL) { |
|
1205 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); |
|
1206 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); |
|
1207 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); |
|
1208 strcpy(info_ptr->name, n); |
|
1209 } else { |
|
1210 info_ptr->name = NULL; |
|
1211 } |
|
1212 |
|
1213 return JVMTI_ERROR_NONE; |
|
1214 } /* end GetThreadGroupInfo */ |
|
1215 |
|
1216 |
|
1217 // thread_count_ptr - pre-checked for NULL |
|
1218 // threads_ptr - pre-checked for NULL |
|
1219 // group_count_ptr - pre-checked for NULL |
|
1220 // groups_ptr - pre-checked for NULL |
|
1221 jvmtiError |
|
1222 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { |
|
1223 JavaThread* current_thread = JavaThread::current(); |
|
1224 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); |
|
1225 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); |
|
1226 |
|
1227 Handle *thread_objs = NULL; |
|
1228 Handle *group_objs = NULL; |
|
1229 int nthreads = 0; |
|
1230 int ngroups = 0; |
|
1231 int hidden_threads = 0; |
|
1232 |
|
1233 ResourceMark rm; |
|
1234 HandleMark hm; |
|
1235 |
|
1236 Handle group_hdl(current_thread, group_obj); |
|
1237 |
|
1238 { MutexLocker mu(Threads_lock); |
|
1239 |
|
1240 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); |
|
1241 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); |
|
1242 |
|
1243 if (nthreads > 0) { |
|
1244 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); |
|
1245 assert(nthreads <= threads->length(), "too many threads"); |
|
1246 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); |
|
1247 for (int i=0, j=0; i<nthreads; i++) { |
|
1248 oop thread_obj = threads->obj_at(i); |
|
1249 assert(thread_obj != NULL, "thread_obj is NULL"); |
|
1250 JavaThread *javathread = java_lang_Thread::thread(thread_obj); |
|
1251 // Filter out hidden java threads. |
|
1252 if (javathread != NULL && javathread->is_hidden_from_external_view()) { |
|
1253 hidden_threads++; |
|
1254 continue; |
|
1255 } |
|
1256 thread_objs[j++] = Handle(current_thread, thread_obj); |
|
1257 } |
|
1258 nthreads -= hidden_threads; |
|
1259 } |
|
1260 if (ngroups > 0) { |
|
1261 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); |
|
1262 assert(ngroups <= groups->length(), "too many threads"); |
|
1263 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); |
|
1264 for (int i=0; i<ngroups; i++) { |
|
1265 oop group_obj = groups->obj_at(i); |
|
1266 assert(group_obj != NULL, "group_obj != NULL"); |
|
1267 group_objs[i] = Handle(current_thread, group_obj); |
|
1268 } |
|
1269 } |
|
1270 } |
|
1271 |
|
1272 // have to make global handles outside of Threads_lock |
|
1273 *group_count_ptr = ngroups; |
|
1274 *thread_count_ptr = nthreads; |
|
1275 *threads_ptr = new_jthreadArray(nthreads, thread_objs); |
|
1276 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); |
|
1277 if ((nthreads > 0) && (*threads_ptr == NULL)) { |
|
1278 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1279 } |
|
1280 if ((ngroups > 0) && (*groups_ptr == NULL)) { |
|
1281 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1282 } |
|
1283 |
|
1284 return JVMTI_ERROR_NONE; |
|
1285 } /* end GetThreadGroupChildren */ |
|
1286 |
|
1287 |
|
1288 // |
|
1289 // Stack Frame functions |
|
1290 // |
|
1291 |
|
1292 // Threads_lock NOT held, java_thread not protected by lock |
|
1293 // java_thread - pre-checked |
|
1294 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1295 // frame_buffer - pre-checked for NULL |
|
1296 // count_ptr - pre-checked for NULL |
|
1297 jvmtiError |
|
1298 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { |
|
1299 jvmtiError err = JVMTI_ERROR_NONE; |
|
1300 uint32_t debug_bits = 0; |
|
1301 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1302 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
|
1303 } else { |
|
1304 // JVMTI get stack trace at safepoint. Do not require target thread to |
|
1305 // be suspended. |
|
1306 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
|
1307 VMThread::execute(&op); |
|
1308 err = op.result(); |
|
1309 } |
|
1310 |
|
1311 return err; |
|
1312 } /* end GetStackTrace */ |
|
1313 |
|
1314 |
|
1315 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1316 // stack_info_ptr - pre-checked for NULL |
|
1317 // thread_count_ptr - pre-checked for NULL |
|
1318 jvmtiError |
|
1319 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { |
|
1320 jvmtiError err = JVMTI_ERROR_NONE; |
|
1321 JavaThread* calling_thread = JavaThread::current(); |
|
1322 |
|
1323 // JVMTI get stack traces at safepoint. |
|
1324 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); |
|
1325 VMThread::execute(&op); |
|
1326 *thread_count_ptr = op.final_thread_count(); |
|
1327 *stack_info_ptr = op.stack_info(); |
|
1328 err = op.result(); |
|
1329 return err; |
|
1330 } /* end GetAllStackTraces */ |
|
1331 |
|
1332 |
|
1333 // thread_count - pre-checked to be greater than or equal to 0 |
|
1334 // thread_list - pre-checked for NULL |
|
1335 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1336 // stack_info_ptr - pre-checked for NULL |
|
1337 jvmtiError |
|
1338 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { |
|
1339 jvmtiError err = JVMTI_ERROR_NONE; |
|
1340 // JVMTI get stack traces at safepoint. |
|
1341 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); |
|
1342 VMThread::execute(&op); |
|
1343 err = op.result(); |
|
1344 if (err == JVMTI_ERROR_NONE) { |
|
1345 *stack_info_ptr = op.stack_info(); |
|
1346 } |
|
1347 return err; |
|
1348 } /* end GetThreadListStackTraces */ |
|
1349 |
|
1350 |
|
1351 // Threads_lock NOT held, java_thread not protected by lock |
|
1352 // java_thread - pre-checked |
|
1353 // count_ptr - pre-checked for NULL |
|
1354 jvmtiError |
|
1355 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { |
|
1356 jvmtiError err = JVMTI_ERROR_NONE; |
|
1357 |
|
1358 // retrieve or create JvmtiThreadState. |
|
1359 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
|
1360 if (state == NULL) { |
|
1361 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1362 } |
|
1363 uint32_t debug_bits = 0; |
|
1364 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1365 err = get_frame_count(state, count_ptr); |
|
1366 } else { |
|
1367 // get java stack frame count at safepoint. |
|
1368 VM_GetFrameCount op(this, state, count_ptr); |
|
1369 VMThread::execute(&op); |
|
1370 err = op.result(); |
|
1371 } |
|
1372 return err; |
|
1373 } /* end GetFrameCount */ |
|
1374 |
|
1375 |
|
1376 // Threads_lock NOT held, java_thread not protected by lock |
|
1377 // java_thread - pre-checked |
|
1378 jvmtiError |
|
1379 JvmtiEnv::PopFrame(JavaThread* java_thread) { |
|
1380 JavaThread* current_thread = JavaThread::current(); |
|
1381 HandleMark hm(current_thread); |
|
1382 uint32_t debug_bits = 0; |
|
1383 |
|
1384 // retrieve or create the state |
|
1385 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
|
1386 if (state == NULL) { |
|
1387 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1388 } |
|
1389 |
|
1390 // Check if java_thread is fully suspended |
|
1391 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { |
|
1392 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1393 } |
|
1394 // Check to see if a PopFrame was already in progress |
|
1395 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { |
|
1396 // Probably possible for JVMTI clients to trigger this, but the |
|
1397 // JPDA backend shouldn't allow this to happen |
|
1398 return JVMTI_ERROR_INTERNAL; |
|
1399 } |
|
1400 |
|
1401 { |
|
1402 // Was workaround bug |
|
1403 // 4812902: popFrame hangs if the method is waiting at a synchronize |
|
1404 // Catch this condition and return an error to avoid hanging. |
|
1405 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. |
|
1406 OSThread* osThread = java_thread->osthread(); |
|
1407 if (osThread->get_state() == MONITOR_WAIT) { |
|
1408 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1409 } |
|
1410 } |
|
1411 |
|
1412 { |
|
1413 ResourceMark rm(current_thread); |
|
1414 // Check if there are more than one Java frame in this thread, that the top two frames |
|
1415 // are Java (not native) frames, and that there is no intervening VM frame |
|
1416 int frame_count = 0; |
|
1417 bool is_interpreted[2]; |
|
1418 intptr_t *frame_sp[2]; |
|
1419 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. |
|
1420 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { |
|
1421 methodHandle mh(current_thread, vfs.method()); |
|
1422 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); |
|
1423 is_interpreted[frame_count] = vfs.is_interpreted_frame(); |
|
1424 frame_sp[frame_count] = vfs.frame_id(); |
|
1425 if (++frame_count > 1) break; |
|
1426 } |
|
1427 if (frame_count < 2) { |
|
1428 // We haven't found two adjacent non-native Java frames on the top. |
|
1429 // There can be two situations here: |
|
1430 // 1. There are no more java frames |
|
1431 // 2. Two top java frames are separated by non-java native frames |
|
1432 if(vframeFor(java_thread, 1) == NULL) { |
|
1433 return JVMTI_ERROR_NO_MORE_FRAMES; |
|
1434 } else { |
|
1435 // Intervening non-java native or VM frames separate java frames. |
|
1436 // Current implementation does not support this. See bug #5031735. |
|
1437 // In theory it is possible to pop frames in such cases. |
|
1438 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1439 } |
|
1440 } |
|
1441 |
|
1442 // If any of the top 2 frames is a compiled one, need to deoptimize it |
|
1443 for (int i = 0; i < 2; i++) { |
|
1444 if (!is_interpreted[i]) { |
|
1445 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
|
1446 } |
|
1447 } |
|
1448 |
|
1449 // Update the thread state to reflect that the top frame is popped |
|
1450 // so that cur_stack_depth is maintained properly and all frameIDs |
|
1451 // are invalidated. |
|
1452 // The current frame will be popped later when the suspended thread |
|
1453 // is resumed and right before returning from VM to Java. |
|
1454 // (see call_VM_base() in assembler_<cpu>.cpp). |
|
1455 |
|
1456 // It's fine to update the thread state here because no JVMTI events |
|
1457 // shall be posted for this PopFrame. |
|
1458 |
|
1459 state->update_for_pop_top_frame(); |
|
1460 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); |
|
1461 // Set pending step flag for this popframe and it is cleared when next |
|
1462 // step event is posted. |
|
1463 state->set_pending_step_for_popframe(); |
|
1464 } |
|
1465 |
|
1466 return JVMTI_ERROR_NONE; |
|
1467 } /* end PopFrame */ |
|
1468 |
|
1469 |
|
1470 // Threads_lock NOT held, java_thread not protected by lock |
|
1471 // java_thread - pre-checked |
|
1472 // java_thread - unchecked |
|
1473 // depth - pre-checked as non-negative |
|
1474 // method_ptr - pre-checked for NULL |
|
1475 // location_ptr - pre-checked for NULL |
|
1476 jvmtiError |
|
1477 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { |
|
1478 jvmtiError err = JVMTI_ERROR_NONE; |
|
1479 uint32_t debug_bits = 0; |
|
1480 |
|
1481 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1482 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); |
|
1483 } else { |
|
1484 // JVMTI get java stack frame location at safepoint. |
|
1485 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); |
|
1486 VMThread::execute(&op); |
|
1487 err = op.result(); |
|
1488 } |
|
1489 return err; |
|
1490 } /* end GetFrameLocation */ |
|
1491 |
|
1492 |
|
1493 // Threads_lock NOT held, java_thread not protected by lock |
|
1494 // java_thread - pre-checked |
|
1495 // java_thread - unchecked |
|
1496 // depth - pre-checked as non-negative |
|
1497 jvmtiError |
|
1498 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { |
|
1499 ResourceMark rm; |
|
1500 uint32_t debug_bits = 0; |
|
1501 |
|
1502 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
|
1503 if (state == NULL) { |
|
1504 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1505 } |
|
1506 |
|
1507 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1508 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1509 } |
|
1510 |
|
1511 if (TraceJVMTICalls) { |
|
1512 JvmtiSuspendControl::print(); |
|
1513 } |
|
1514 |
|
1515 vframe *vf = vframeFor(java_thread, depth); |
|
1516 if (vf == NULL) { |
|
1517 return JVMTI_ERROR_NO_MORE_FRAMES; |
|
1518 } |
|
1519 |
|
1520 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { |
|
1521 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1522 } |
|
1523 |
|
1524 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); |
|
1525 |
|
1526 int frame_number = state->count_frames() - depth; |
|
1527 state->env_thread_state(this)->set_frame_pop(frame_number); |
|
1528 |
|
1529 return JVMTI_ERROR_NONE; |
|
1530 } /* end NotifyFramePop */ |
|
1531 |
|
1532 |
|
1533 // |
|
1534 // Force Early Return functions |
|
1535 // |
|
1536 |
|
1537 // Threads_lock NOT held, java_thread not protected by lock |
|
1538 // java_thread - pre-checked |
|
1539 jvmtiError |
|
1540 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { |
|
1541 jvalue val; |
|
1542 val.l = value; |
|
1543 return force_early_return(java_thread, val, atos); |
|
1544 } /* end ForceEarlyReturnObject */ |
|
1545 |
|
1546 |
|
1547 // Threads_lock NOT held, java_thread not protected by lock |
|
1548 // java_thread - pre-checked |
|
1549 jvmtiError |
|
1550 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { |
|
1551 jvalue val; |
|
1552 val.i = value; |
|
1553 return force_early_return(java_thread, val, itos); |
|
1554 } /* end ForceEarlyReturnInt */ |
|
1555 |
|
1556 |
|
1557 // Threads_lock NOT held, java_thread not protected by lock |
|
1558 // java_thread - pre-checked |
|
1559 jvmtiError |
|
1560 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { |
|
1561 jvalue val; |
|
1562 val.j = value; |
|
1563 return force_early_return(java_thread, val, ltos); |
|
1564 } /* end ForceEarlyReturnLong */ |
|
1565 |
|
1566 |
|
1567 // Threads_lock NOT held, java_thread not protected by lock |
|
1568 // java_thread - pre-checked |
|
1569 jvmtiError |
|
1570 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { |
|
1571 jvalue val; |
|
1572 val.f = value; |
|
1573 return force_early_return(java_thread, val, ftos); |
|
1574 } /* end ForceEarlyReturnFloat */ |
|
1575 |
|
1576 |
|
1577 // Threads_lock NOT held, java_thread not protected by lock |
|
1578 // java_thread - pre-checked |
|
1579 jvmtiError |
|
1580 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { |
|
1581 jvalue val; |
|
1582 val.d = value; |
|
1583 return force_early_return(java_thread, val, dtos); |
|
1584 } /* end ForceEarlyReturnDouble */ |
|
1585 |
|
1586 |
|
1587 // Threads_lock NOT held, java_thread not protected by lock |
|
1588 // java_thread - pre-checked |
|
1589 jvmtiError |
|
1590 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { |
|
1591 jvalue val; |
|
1592 val.j = 0L; |
|
1593 return force_early_return(java_thread, val, vtos); |
|
1594 } /* end ForceEarlyReturnVoid */ |
|
1595 |
|
1596 |
|
1597 // |
|
1598 // Heap functions |
|
1599 // |
|
1600 |
|
1601 // klass - NULL is a valid value, must be checked |
|
1602 // initial_object - NULL is a valid value, must be checked |
|
1603 // callbacks - pre-checked for NULL |
|
1604 // user_data - NULL is a valid value, must be checked |
|
1605 jvmtiError |
|
1606 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
|
1607 // check klass if provided |
|
1608 Klass* k_oop = NULL; |
|
1609 if (klass != NULL) { |
|
1610 oop k_mirror = JNIHandles::resolve_external_guard(klass); |
|
1611 if (k_mirror == NULL) { |
|
1612 return JVMTI_ERROR_INVALID_CLASS; |
|
1613 } |
|
1614 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1615 return JVMTI_ERROR_NONE; |
|
1616 } |
|
1617 k_oop = java_lang_Class::as_Klass(k_mirror); |
|
1618 if (k_oop == NULL) { |
|
1619 return JVMTI_ERROR_INVALID_CLASS; |
|
1620 } |
|
1621 } |
|
1622 |
|
1623 Thread *thread = Thread::current(); |
|
1624 HandleMark hm(thread); |
|
1625 KlassHandle kh (thread, k_oop); |
|
1626 |
|
1627 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); |
|
1628 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); |
|
1629 return JVMTI_ERROR_NONE; |
|
1630 } /* end FollowReferences */ |
|
1631 |
|
1632 |
|
1633 // klass - NULL is a valid value, must be checked |
|
1634 // callbacks - pre-checked for NULL |
|
1635 // user_data - NULL is a valid value, must be checked |
|
1636 jvmtiError |
|
1637 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
|
1638 // check klass if provided |
|
1639 Klass* k_oop = NULL; |
|
1640 if (klass != NULL) { |
|
1641 oop k_mirror = JNIHandles::resolve_external_guard(klass); |
|
1642 if (k_mirror == NULL) { |
|
1643 return JVMTI_ERROR_INVALID_CLASS; |
|
1644 } |
|
1645 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1646 return JVMTI_ERROR_NONE; |
|
1647 } |
|
1648 k_oop = java_lang_Class::as_Klass(k_mirror); |
|
1649 if (k_oop == NULL) { |
|
1650 return JVMTI_ERROR_INVALID_CLASS; |
|
1651 } |
|
1652 } |
|
1653 |
|
1654 Thread *thread = Thread::current(); |
|
1655 HandleMark hm(thread); |
|
1656 KlassHandle kh (thread, k_oop); |
|
1657 |
|
1658 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); |
|
1659 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); |
|
1660 return JVMTI_ERROR_NONE; |
|
1661 } /* end IterateThroughHeap */ |
|
1662 |
|
1663 |
|
1664 // tag_ptr - pre-checked for NULL |
|
1665 jvmtiError |
|
1666 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { |
|
1667 oop o = JNIHandles::resolve_external_guard(object); |
|
1668 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1669 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); |
|
1670 return JVMTI_ERROR_NONE; |
|
1671 } /* end GetTag */ |
|
1672 |
|
1673 |
|
1674 jvmtiError |
|
1675 JvmtiEnv::SetTag(jobject object, jlong tag) { |
|
1676 oop o = JNIHandles::resolve_external_guard(object); |
|
1677 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1678 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); |
|
1679 return JVMTI_ERROR_NONE; |
|
1680 } /* end SetTag */ |
|
1681 |
|
1682 |
|
1683 // tag_count - pre-checked to be greater than or equal to 0 |
|
1684 // tags - pre-checked for NULL |
|
1685 // count_ptr - pre-checked for NULL |
|
1686 // object_result_ptr - NULL is a valid value, must be checked |
|
1687 // tag_result_ptr - NULL is a valid value, must be checked |
|
1688 jvmtiError |
|
1689 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { |
|
1690 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); |
|
1691 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); |
|
1692 } /* end GetObjectsWithTags */ |
|
1693 |
|
1694 |
|
1695 jvmtiError |
|
1696 JvmtiEnv::ForceGarbageCollection() { |
|
1697 Universe::heap()->collect(GCCause::_jvmti_force_gc); |
|
1698 return JVMTI_ERROR_NONE; |
|
1699 } /* end ForceGarbageCollection */ |
|
1700 |
|
1701 |
|
1702 // |
|
1703 // Heap (1.0) functions |
|
1704 // |
|
1705 |
|
1706 // object_reference_callback - pre-checked for NULL |
|
1707 // user_data - NULL is a valid value, must be checked |
|
1708 jvmtiError |
|
1709 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { |
|
1710 oop o = JNIHandles::resolve_external_guard(object); |
|
1711 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1712 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); |
|
1713 return JVMTI_ERROR_NONE; |
|
1714 } /* end IterateOverObjectsReachableFromObject */ |
|
1715 |
|
1716 |
|
1717 // heap_root_callback - NULL is a valid value, must be checked |
|
1718 // stack_ref_callback - NULL is a valid value, must be checked |
|
1719 // object_ref_callback - NULL is a valid value, must be checked |
|
1720 // user_data - NULL is a valid value, must be checked |
|
1721 jvmtiError |
|
1722 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { |
|
1723 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); |
|
1724 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); |
|
1725 return JVMTI_ERROR_NONE; |
|
1726 } /* end IterateOverReachableObjects */ |
|
1727 |
|
1728 |
|
1729 // heap_object_callback - pre-checked for NULL |
|
1730 // user_data - NULL is a valid value, must be checked |
|
1731 jvmtiError |
|
1732 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
|
1733 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); |
|
1734 Thread *thread = Thread::current(); |
|
1735 HandleMark hm(thread); |
|
1736 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); |
|
1737 return JVMTI_ERROR_NONE; |
|
1738 } /* end IterateOverHeap */ |
|
1739 |
|
1740 |
|
1741 // k_mirror - may be primitive, this must be checked |
|
1742 // heap_object_callback - pre-checked for NULL |
|
1743 // user_data - NULL is a valid value, must be checked |
|
1744 jvmtiError |
|
1745 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
|
1746 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1747 // DO PRIMITIVE CLASS PROCESSING |
|
1748 return JVMTI_ERROR_NONE; |
|
1749 } |
|
1750 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
|
1751 if (k_oop == NULL) { |
|
1752 return JVMTI_ERROR_INVALID_CLASS; |
|
1753 } |
|
1754 Thread *thread = Thread::current(); |
|
1755 HandleMark hm(thread); |
|
1756 KlassHandle klass (thread, k_oop); |
|
1757 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); |
|
1758 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); |
|
1759 return JVMTI_ERROR_NONE; |
|
1760 } /* end IterateOverInstancesOfClass */ |
|
1761 |
|
1762 |
|
1763 // |
|
1764 // Local Variable functions |
|
1765 // |
|
1766 |
|
1767 // Threads_lock NOT held, java_thread not protected by lock |
|
1768 // java_thread - pre-checked |
|
1769 // java_thread - unchecked |
|
1770 // depth - pre-checked as non-negative |
|
1771 // value_ptr - pre-checked for NULL |
|
1772 jvmtiError |
|
1773 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { |
|
1774 JavaThread* current_thread = JavaThread::current(); |
|
1775 // rm object is created to clean up the javaVFrame created in |
|
1776 // doit_prologue(), but after doit() is finished with it. |
|
1777 ResourceMark rm(current_thread); |
|
1778 |
|
1779 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); |
|
1780 VMThread::execute(&op); |
|
1781 jvmtiError err = op.result(); |
|
1782 if (err != JVMTI_ERROR_NONE) { |
|
1783 return err; |
|
1784 } else { |
|
1785 *value_ptr = op.value().l; |
|
1786 return JVMTI_ERROR_NONE; |
|
1787 } |
|
1788 } /* end GetLocalObject */ |
|
1789 |
|
1790 // Threads_lock NOT held, java_thread not protected by lock |
|
1791 // java_thread - pre-checked |
|
1792 // java_thread - unchecked |
|
1793 // depth - pre-checked as non-negative |
|
1794 // value - pre-checked for NULL |
|
1795 jvmtiError |
|
1796 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
|
1797 JavaThread* current_thread = JavaThread::current(); |
|
1798 // rm object is created to clean up the javaVFrame created in |
|
1799 // doit_prologue(), but after doit() is finished with it. |
|
1800 ResourceMark rm(current_thread); |
|
1801 |
|
1802 VM_GetReceiver op(java_thread, current_thread, depth); |
|
1803 VMThread::execute(&op); |
|
1804 jvmtiError err = op.result(); |
|
1805 if (err != JVMTI_ERROR_NONE) { |
|
1806 return err; |
|
1807 } else { |
|
1808 *value_ptr = op.value().l; |
|
1809 return JVMTI_ERROR_NONE; |
|
1810 } |
|
1811 } /* end GetLocalInstance */ |
|
1812 |
|
1813 |
|
1814 // Threads_lock NOT held, java_thread not protected by lock |
|
1815 // java_thread - pre-checked |
|
1816 // java_thread - unchecked |
|
1817 // depth - pre-checked as non-negative |
|
1818 // value_ptr - pre-checked for NULL |
|
1819 jvmtiError |
|
1820 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { |
|
1821 // rm object is created to clean up the javaVFrame created in |
|
1822 // doit_prologue(), but after doit() is finished with it. |
|
1823 ResourceMark rm; |
|
1824 |
|
1825 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); |
|
1826 VMThread::execute(&op); |
|
1827 *value_ptr = op.value().i; |
|
1828 return op.result(); |
|
1829 } /* end GetLocalInt */ |
|
1830 |
|
1831 |
|
1832 // Threads_lock NOT held, java_thread not protected by lock |
|
1833 // java_thread - pre-checked |
|
1834 // java_thread - unchecked |
|
1835 // depth - pre-checked as non-negative |
|
1836 // value_ptr - pre-checked for NULL |
|
1837 jvmtiError |
|
1838 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { |
|
1839 // rm object is created to clean up the javaVFrame created in |
|
1840 // doit_prologue(), but after doit() is finished with it. |
|
1841 ResourceMark rm; |
|
1842 |
|
1843 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); |
|
1844 VMThread::execute(&op); |
|
1845 *value_ptr = op.value().j; |
|
1846 return op.result(); |
|
1847 } /* end GetLocalLong */ |
|
1848 |
|
1849 |
|
1850 // Threads_lock NOT held, java_thread not protected by lock |
|
1851 // java_thread - pre-checked |
|
1852 // java_thread - unchecked |
|
1853 // depth - pre-checked as non-negative |
|
1854 // value_ptr - pre-checked for NULL |
|
1855 jvmtiError |
|
1856 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { |
|
1857 // rm object is created to clean up the javaVFrame created in |
|
1858 // doit_prologue(), but after doit() is finished with it. |
|
1859 ResourceMark rm; |
|
1860 |
|
1861 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); |
|
1862 VMThread::execute(&op); |
|
1863 *value_ptr = op.value().f; |
|
1864 return op.result(); |
|
1865 } /* end GetLocalFloat */ |
|
1866 |
|
1867 |
|
1868 // Threads_lock NOT held, java_thread not protected by lock |
|
1869 // java_thread - pre-checked |
|
1870 // java_thread - unchecked |
|
1871 // depth - pre-checked as non-negative |
|
1872 // value_ptr - pre-checked for NULL |
|
1873 jvmtiError |
|
1874 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { |
|
1875 // rm object is created to clean up the javaVFrame created in |
|
1876 // doit_prologue(), but after doit() is finished with it. |
|
1877 ResourceMark rm; |
|
1878 |
|
1879 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); |
|
1880 VMThread::execute(&op); |
|
1881 *value_ptr = op.value().d; |
|
1882 return op.result(); |
|
1883 } /* end GetLocalDouble */ |
|
1884 |
|
1885 |
|
1886 // Threads_lock NOT held, java_thread not protected by lock |
|
1887 // java_thread - pre-checked |
|
1888 // java_thread - unchecked |
|
1889 // depth - pre-checked as non-negative |
|
1890 jvmtiError |
|
1891 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { |
|
1892 // rm object is created to clean up the javaVFrame created in |
|
1893 // doit_prologue(), but after doit() is finished with it. |
|
1894 ResourceMark rm; |
|
1895 jvalue val; |
|
1896 val.l = value; |
|
1897 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); |
|
1898 VMThread::execute(&op); |
|
1899 return op.result(); |
|
1900 } /* end SetLocalObject */ |
|
1901 |
|
1902 |
|
1903 // Threads_lock NOT held, java_thread not protected by lock |
|
1904 // java_thread - pre-checked |
|
1905 // java_thread - unchecked |
|
1906 // depth - pre-checked as non-negative |
|
1907 jvmtiError |
|
1908 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { |
|
1909 // rm object is created to clean up the javaVFrame created in |
|
1910 // doit_prologue(), but after doit() is finished with it. |
|
1911 ResourceMark rm; |
|
1912 jvalue val; |
|
1913 val.i = value; |
|
1914 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); |
|
1915 VMThread::execute(&op); |
|
1916 return op.result(); |
|
1917 } /* end SetLocalInt */ |
|
1918 |
|
1919 |
|
1920 // Threads_lock NOT held, java_thread not protected by lock |
|
1921 // java_thread - pre-checked |
|
1922 // java_thread - unchecked |
|
1923 // depth - pre-checked as non-negative |
|
1924 jvmtiError |
|
1925 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { |
|
1926 // rm object is created to clean up the javaVFrame created in |
|
1927 // doit_prologue(), but after doit() is finished with it. |
|
1928 ResourceMark rm; |
|
1929 jvalue val; |
|
1930 val.j = value; |
|
1931 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); |
|
1932 VMThread::execute(&op); |
|
1933 return op.result(); |
|
1934 } /* end SetLocalLong */ |
|
1935 |
|
1936 |
|
1937 // Threads_lock NOT held, java_thread not protected by lock |
|
1938 // java_thread - pre-checked |
|
1939 // java_thread - unchecked |
|
1940 // depth - pre-checked as non-negative |
|
1941 jvmtiError |
|
1942 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { |
|
1943 // rm object is created to clean up the javaVFrame created in |
|
1944 // doit_prologue(), but after doit() is finished with it. |
|
1945 ResourceMark rm; |
|
1946 jvalue val; |
|
1947 val.f = value; |
|
1948 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); |
|
1949 VMThread::execute(&op); |
|
1950 return op.result(); |
|
1951 } /* end SetLocalFloat */ |
|
1952 |
|
1953 |
|
1954 // Threads_lock NOT held, java_thread not protected by lock |
|
1955 // java_thread - pre-checked |
|
1956 // java_thread - unchecked |
|
1957 // depth - pre-checked as non-negative |
|
1958 jvmtiError |
|
1959 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { |
|
1960 // rm object is created to clean up the javaVFrame created in |
|
1961 // doit_prologue(), but after doit() is finished with it. |
|
1962 ResourceMark rm; |
|
1963 jvalue val; |
|
1964 val.d = value; |
|
1965 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); |
|
1966 VMThread::execute(&op); |
|
1967 return op.result(); |
|
1968 } /* end SetLocalDouble */ |
|
1969 |
|
1970 |
|
1971 // |
|
1972 // Breakpoint functions |
|
1973 // |
|
1974 |
|
1975 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
1976 jvmtiError |
|
1977 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
|
1978 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
1979 if (location < 0) { // simple invalid location check first |
|
1980 return JVMTI_ERROR_INVALID_LOCATION; |
|
1981 } |
|
1982 // verify that the breakpoint is not past the end of the method |
|
1983 if (location >= (jlocation) method_oop->code_size()) { |
|
1984 return JVMTI_ERROR_INVALID_LOCATION; |
|
1985 } |
|
1986 |
|
1987 ResourceMark rm; |
|
1988 JvmtiBreakpoint bp(method_oop, location); |
|
1989 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
|
1990 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) |
|
1991 return JVMTI_ERROR_DUPLICATE; |
|
1992 |
|
1993 if (TraceJVMTICalls) { |
|
1994 jvmti_breakpoints.print(); |
|
1995 } |
|
1996 |
|
1997 return JVMTI_ERROR_NONE; |
|
1998 } /* end SetBreakpoint */ |
|
1999 |
|
2000 |
|
2001 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2002 jvmtiError |
|
2003 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
|
2004 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2005 |
|
2006 if (location < 0) { // simple invalid location check first |
|
2007 return JVMTI_ERROR_INVALID_LOCATION; |
|
2008 } |
|
2009 |
|
2010 // verify that the breakpoint is not past the end of the method |
|
2011 if (location >= (jlocation) method_oop->code_size()) { |
|
2012 return JVMTI_ERROR_INVALID_LOCATION; |
|
2013 } |
|
2014 |
|
2015 JvmtiBreakpoint bp(method_oop, location); |
|
2016 |
|
2017 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
|
2018 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) |
|
2019 return JVMTI_ERROR_NOT_FOUND; |
|
2020 |
|
2021 if (TraceJVMTICalls) { |
|
2022 jvmti_breakpoints.print(); |
|
2023 } |
|
2024 |
|
2025 return JVMTI_ERROR_NONE; |
|
2026 } /* end ClearBreakpoint */ |
|
2027 |
|
2028 |
|
2029 // |
|
2030 // Watched Field functions |
|
2031 // |
|
2032 |
|
2033 jvmtiError |
|
2034 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
|
2035 // make sure we haven't set this watch before |
|
2036 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; |
|
2037 fdesc_ptr->set_is_field_access_watched(true); |
|
2038 |
|
2039 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); |
|
2040 |
|
2041 return JVMTI_ERROR_NONE; |
|
2042 } /* end SetFieldAccessWatch */ |
|
2043 |
|
2044 |
|
2045 jvmtiError |
|
2046 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
|
2047 // make sure we have a watch to clear |
|
2048 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; |
|
2049 fdesc_ptr->set_is_field_access_watched(false); |
|
2050 |
|
2051 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); |
|
2052 |
|
2053 return JVMTI_ERROR_NONE; |
|
2054 } /* end ClearFieldAccessWatch */ |
|
2055 |
|
2056 |
|
2057 jvmtiError |
|
2058 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
|
2059 // make sure we haven't set this watch before |
|
2060 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; |
|
2061 fdesc_ptr->set_is_field_modification_watched(true); |
|
2062 |
|
2063 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); |
|
2064 |
|
2065 return JVMTI_ERROR_NONE; |
|
2066 } /* end SetFieldModificationWatch */ |
|
2067 |
|
2068 |
|
2069 jvmtiError |
|
2070 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
|
2071 // make sure we have a watch to clear |
|
2072 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; |
|
2073 fdesc_ptr->set_is_field_modification_watched(false); |
|
2074 |
|
2075 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); |
|
2076 |
|
2077 return JVMTI_ERROR_NONE; |
|
2078 } /* end ClearFieldModificationWatch */ |
|
2079 |
|
2080 // |
|
2081 // Class functions |
|
2082 // |
|
2083 |
|
2084 |
|
2085 // k_mirror - may be primitive, this must be checked |
|
2086 // signature_ptr - NULL is a valid value, must be checked |
|
2087 // generic_ptr - NULL is a valid value, must be checked |
|
2088 jvmtiError |
|
2089 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { |
|
2090 ResourceMark rm; |
|
2091 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); |
|
2092 Klass* k = NULL; |
|
2093 if (!isPrimitive) { |
|
2094 k = java_lang_Class::as_Klass(k_mirror); |
|
2095 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2096 } |
|
2097 if (signature_ptr != NULL) { |
|
2098 char* result = NULL; |
|
2099 if (isPrimitive) { |
|
2100 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); |
|
2101 result = (char*) jvmtiMalloc(2); |
|
2102 result[0] = tchar; |
|
2103 result[1] = '\0'; |
|
2104 } else { |
|
2105 const char* class_sig = k->signature_name(); |
|
2106 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
|
2107 strcpy(result, class_sig); |
|
2108 } |
|
2109 *signature_ptr = result; |
|
2110 } |
|
2111 if (generic_ptr != NULL) { |
|
2112 *generic_ptr = NULL; |
|
2113 if (!isPrimitive && k->oop_is_instance()) { |
|
2114 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
|
2115 if (soo != NULL) { |
|
2116 const char *gen_sig = soo->as_C_string(); |
|
2117 if (gen_sig != NULL) { |
|
2118 char* gen_result; |
|
2119 jvmtiError err = allocate(strlen(gen_sig) + 1, |
|
2120 (unsigned char **)&gen_result); |
|
2121 if (err != JVMTI_ERROR_NONE) { |
|
2122 return err; |
|
2123 } |
|
2124 strcpy(gen_result, gen_sig); |
|
2125 *generic_ptr = gen_result; |
|
2126 } |
|
2127 } |
|
2128 } |
|
2129 } |
|
2130 return JVMTI_ERROR_NONE; |
|
2131 } /* end GetClassSignature */ |
|
2132 |
|
2133 |
|
2134 // k_mirror - may be primitive, this must be checked |
|
2135 // status_ptr - pre-checked for NULL |
|
2136 jvmtiError |
|
2137 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { |
|
2138 jint result = 0; |
|
2139 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2140 result |= JVMTI_CLASS_STATUS_PRIMITIVE; |
|
2141 } else { |
|
2142 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2143 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2144 result = k->jvmti_class_status(); |
|
2145 } |
|
2146 *status_ptr = result; |
|
2147 |
|
2148 return JVMTI_ERROR_NONE; |
|
2149 } /* end GetClassStatus */ |
|
2150 |
|
2151 |
|
2152 // k_mirror - may be primitive, this must be checked |
|
2153 // source_name_ptr - pre-checked for NULL |
|
2154 jvmtiError |
|
2155 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { |
|
2156 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2157 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2158 } |
|
2159 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
|
2160 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
|
2161 |
|
2162 if (!k_klass->oop_is_instance()) { |
|
2163 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2164 } |
|
2165 |
|
2166 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
|
2167 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
|
2168 { |
|
2169 JavaThread* current_thread = JavaThread::current(); |
|
2170 ResourceMark rm(current_thread); |
|
2171 const char* sfncp = (const char*) sfnOop->as_C_string(); |
|
2172 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); |
|
2173 strcpy(*source_name_ptr, sfncp); |
|
2174 } |
|
2175 |
|
2176 return JVMTI_ERROR_NONE; |
|
2177 } /* end GetSourceFileName */ |
|
2178 |
|
2179 |
|
2180 // k_mirror - may be primitive, this must be checked |
|
2181 // modifiers_ptr - pre-checked for NULL |
|
2182 jvmtiError |
|
2183 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { |
|
2184 JavaThread* current_thread = JavaThread::current(); |
|
2185 jint result = 0; |
|
2186 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2187 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2188 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2189 result = k->compute_modifier_flags(current_thread); |
|
2190 JavaThread* THREAD = current_thread; // pass to macros |
|
2191 if (HAS_PENDING_EXCEPTION) { |
|
2192 CLEAR_PENDING_EXCEPTION; |
|
2193 return JVMTI_ERROR_INTERNAL; |
|
2194 }; |
|
2195 |
|
2196 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). |
|
2197 if(k->is_super()) { |
|
2198 result |= JVM_ACC_SUPER; |
|
2199 } |
|
2200 } else { |
|
2201 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); |
|
2202 } |
|
2203 *modifiers_ptr = result; |
|
2204 |
|
2205 return JVMTI_ERROR_NONE; |
|
2206 } /* end GetClassModifiers */ |
|
2207 |
|
2208 |
|
2209 // k_mirror - may be primitive, this must be checked |
|
2210 // method_count_ptr - pre-checked for NULL |
|
2211 // methods_ptr - pre-checked for NULL |
|
2212 jvmtiError |
|
2213 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { |
|
2214 JavaThread* current_thread = JavaThread::current(); |
|
2215 HandleMark hm(current_thread); |
|
2216 |
|
2217 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2218 *method_count_ptr = 0; |
|
2219 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
|
2220 return JVMTI_ERROR_NONE; |
|
2221 } |
|
2222 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2223 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2224 |
|
2225 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2226 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
|
2227 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2228 } |
|
2229 |
|
2230 if (!k->oop_is_instance()) { |
|
2231 *method_count_ptr = 0; |
|
2232 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
|
2233 return JVMTI_ERROR_NONE; |
|
2234 } |
|
2235 instanceKlassHandle instanceK_h(current_thread, k); |
|
2236 // Allocate the result and fill it in |
|
2237 int result_length = instanceK_h->methods()->length(); |
|
2238 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); |
|
2239 int index; |
|
2240 if (JvmtiExport::can_maintain_original_method_order()) { |
|
2241 // Use the original method ordering indices stored in the class, so we can emit |
|
2242 // jmethodIDs in the order they appeared in the class file |
|
2243 for (index = 0; index < result_length; index++) { |
|
2244 Method* m = instanceK_h->methods()->at(index); |
|
2245 int original_index = instanceK_h->method_ordering()->at(index); |
|
2246 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
|
2247 jmethodID id = m->jmethod_id(); |
|
2248 result_list[original_index] = id; |
|
2249 } |
|
2250 } else { |
|
2251 // otherwise just copy in any order |
|
2252 for (index = 0; index < result_length; index++) { |
|
2253 Method* m = instanceK_h->methods()->at(index); |
|
2254 jmethodID id = m->jmethod_id(); |
|
2255 result_list[index] = id; |
|
2256 } |
|
2257 } |
|
2258 // Fill in return value. |
|
2259 *method_count_ptr = result_length; |
|
2260 *methods_ptr = result_list; |
|
2261 |
|
2262 return JVMTI_ERROR_NONE; |
|
2263 } /* end GetClassMethods */ |
|
2264 |
|
2265 |
|
2266 // k_mirror - may be primitive, this must be checked |
|
2267 // field_count_ptr - pre-checked for NULL |
|
2268 // fields_ptr - pre-checked for NULL |
|
2269 jvmtiError |
|
2270 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { |
|
2271 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2272 *field_count_ptr = 0; |
|
2273 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
|
2274 return JVMTI_ERROR_NONE; |
|
2275 } |
|
2276 JavaThread* current_thread = JavaThread::current(); |
|
2277 HandleMark hm(current_thread); |
|
2278 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2279 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2280 |
|
2281 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2282 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
|
2283 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2284 } |
|
2285 |
|
2286 if (!k->oop_is_instance()) { |
|
2287 *field_count_ptr = 0; |
|
2288 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
|
2289 return JVMTI_ERROR_NONE; |
|
2290 } |
|
2291 |
|
2292 |
|
2293 instanceKlassHandle instanceK_h(current_thread, k); |
|
2294 |
|
2295 int result_count = 0; |
|
2296 // First, count the fields. |
|
2297 FilteredFieldStream flds(instanceK_h, true, true); |
|
2298 result_count = flds.field_count(); |
|
2299 |
|
2300 // Allocate the result and fill it in |
|
2301 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); |
|
2302 // The JVMTI spec requires fields in the order they occur in the class file, |
|
2303 // this is the reverse order of what FieldStream hands out. |
|
2304 int id_index = (result_count - 1); |
|
2305 |
|
2306 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { |
|
2307 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( |
|
2308 instanceK_h, src_st.offset(), |
|
2309 src_st.access_flags().is_static()); |
|
2310 } |
|
2311 assert(id_index == -1, "just checking"); |
|
2312 // Fill in the results |
|
2313 *field_count_ptr = result_count; |
|
2314 *fields_ptr = result_list; |
|
2315 |
|
2316 return JVMTI_ERROR_NONE; |
|
2317 } /* end GetClassFields */ |
|
2318 |
|
2319 |
|
2320 // k_mirror - may be primitive, this must be checked |
|
2321 // interface_count_ptr - pre-checked for NULL |
|
2322 // interfaces_ptr - pre-checked for NULL |
|
2323 jvmtiError |
|
2324 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { |
|
2325 { |
|
2326 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2327 *interface_count_ptr = 0; |
|
2328 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
|
2329 return JVMTI_ERROR_NONE; |
|
2330 } |
|
2331 JavaThread* current_thread = JavaThread::current(); |
|
2332 HandleMark hm(current_thread); |
|
2333 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2334 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2335 |
|
2336 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2337 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
|
2338 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2339 |
|
2340 if (!k->oop_is_instance()) { |
|
2341 *interface_count_ptr = 0; |
|
2342 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
|
2343 return JVMTI_ERROR_NONE; |
|
2344 } |
|
2345 |
|
2346 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
|
2347 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
|
2348 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
|
2349 for (int i_index = 0; i_index < result_length; i_index += 1) { |
|
2350 Klass* klass_at = interface_list->at(i_index); |
|
2351 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
|
2352 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
|
2353 oop mirror_at = klass_at->java_mirror(); |
|
2354 Handle handle_at = Handle(current_thread, mirror_at); |
|
2355 result_list[i_index] = (jclass) jni_reference(handle_at); |
|
2356 } |
|
2357 *interface_count_ptr = result_length; |
|
2358 *interfaces_ptr = result_list; |
|
2359 } |
|
2360 |
|
2361 return JVMTI_ERROR_NONE; |
|
2362 } /* end GetImplementedInterfaces */ |
|
2363 |
|
2364 |
|
2365 // k_mirror - may be primitive, this must be checked |
|
2366 // minor_version_ptr - pre-checked for NULL |
|
2367 // major_version_ptr - pre-checked for NULL |
|
2368 jvmtiError |
|
2369 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { |
|
2370 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2371 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2372 } |
|
2373 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
|
2374 Thread *thread = Thread::current(); |
|
2375 HandleMark hm(thread); |
|
2376 KlassHandle klass(thread, k_oop); |
|
2377 |
|
2378 jint status = klass->jvmti_class_status(); |
|
2379 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
|
2380 return JVMTI_ERROR_INVALID_CLASS; |
|
2381 } |
|
2382 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
|
2383 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2384 } |
|
2385 |
|
2386 instanceKlassHandle ik(thread, k_oop); |
|
2387 *minor_version_ptr = ik->minor_version(); |
|
2388 *major_version_ptr = ik->major_version(); |
|
2389 |
|
2390 return JVMTI_ERROR_NONE; |
|
2391 } /* end GetClassVersionNumbers */ |
|
2392 |
|
2393 |
|
2394 // k_mirror - may be primitive, this must be checked |
|
2395 // constant_pool_count_ptr - pre-checked for NULL |
|
2396 // constant_pool_byte_count_ptr - pre-checked for NULL |
|
2397 // constant_pool_bytes_ptr - pre-checked for NULL |
|
2398 jvmtiError |
|
2399 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { |
|
2400 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2401 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2402 } |
|
2403 |
|
2404 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
|
2405 Thread *thread = Thread::current(); |
|
2406 HandleMark hm(thread); |
|
2407 ResourceMark rm(thread); |
|
2408 KlassHandle klass(thread, k_oop); |
|
2409 |
|
2410 jint status = klass->jvmti_class_status(); |
|
2411 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
|
2412 return JVMTI_ERROR_INVALID_CLASS; |
|
2413 } |
|
2414 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
|
2415 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2416 } |
|
2417 |
|
2418 instanceKlassHandle ikh(thread, k_oop); |
|
2419 constantPoolHandle constants(thread, ikh->constants()); |
|
2420 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
|
2421 |
|
2422 JvmtiConstantPoolReconstituter reconstituter(ikh); |
|
2423 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2424 return reconstituter.get_error(); |
|
2425 } |
|
2426 |
|
2427 unsigned char *cpool_bytes; |
|
2428 int cpool_size = reconstituter.cpool_size(); |
|
2429 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2430 return reconstituter.get_error(); |
|
2431 } |
|
2432 jvmtiError res = allocate(cpool_size, &cpool_bytes); |
|
2433 if (res != JVMTI_ERROR_NONE) { |
|
2434 return res; |
|
2435 } |
|
2436 reconstituter.copy_cpool_bytes(cpool_bytes); |
|
2437 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2438 return reconstituter.get_error(); |
|
2439 } |
|
2440 |
|
2441 *constant_pool_count_ptr = constants->length(); |
|
2442 *constant_pool_byte_count_ptr = cpool_size; |
|
2443 *constant_pool_bytes_ptr = cpool_bytes; |
|
2444 |
|
2445 return JVMTI_ERROR_NONE; |
|
2446 } /* end GetConstantPool */ |
|
2447 |
|
2448 |
|
2449 // k_mirror - may be primitive, this must be checked |
|
2450 // is_interface_ptr - pre-checked for NULL |
|
2451 jvmtiError |
|
2452 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { |
|
2453 { |
|
2454 bool result = false; |
|
2455 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2456 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2457 if (k != NULL && k->is_interface()) { |
|
2458 result = true; |
|
2459 } |
|
2460 } |
|
2461 *is_interface_ptr = result; |
|
2462 } |
|
2463 |
|
2464 return JVMTI_ERROR_NONE; |
|
2465 } /* end IsInterface */ |
|
2466 |
|
2467 |
|
2468 // k_mirror - may be primitive, this must be checked |
|
2469 // is_array_class_ptr - pre-checked for NULL |
|
2470 jvmtiError |
|
2471 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { |
|
2472 { |
|
2473 bool result = false; |
|
2474 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2475 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2476 if (k != NULL && k->oop_is_array()) { |
|
2477 result = true; |
|
2478 } |
|
2479 } |
|
2480 *is_array_class_ptr = result; |
|
2481 } |
|
2482 |
|
2483 return JVMTI_ERROR_NONE; |
|
2484 } /* end IsArrayClass */ |
|
2485 |
|
2486 |
|
2487 // k_mirror - may be primitive, this must be checked |
|
2488 // classloader_ptr - pre-checked for NULL |
|
2489 jvmtiError |
|
2490 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { |
|
2491 { |
|
2492 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2493 *classloader_ptr = (jclass) jni_reference(Handle()); |
|
2494 return JVMTI_ERROR_NONE; |
|
2495 } |
|
2496 JavaThread* current_thread = JavaThread::current(); |
|
2497 HandleMark hm(current_thread); |
|
2498 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2499 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2500 |
|
2501 oop result_oop = k->class_loader(); |
|
2502 if (result_oop == NULL) { |
|
2503 *classloader_ptr = (jclass) jni_reference(Handle()); |
|
2504 return JVMTI_ERROR_NONE; |
|
2505 } |
|
2506 Handle result_handle = Handle(current_thread, result_oop); |
|
2507 jclass result_jnihandle = (jclass) jni_reference(result_handle); |
|
2508 *classloader_ptr = result_jnihandle; |
|
2509 } |
|
2510 return JVMTI_ERROR_NONE; |
|
2511 } /* end GetClassLoader */ |
|
2512 |
|
2513 |
|
2514 // k_mirror - may be primitive, this must be checked |
|
2515 // source_debug_extension_ptr - pre-checked for NULL |
|
2516 jvmtiError |
|
2517 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { |
|
2518 { |
|
2519 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2520 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2521 } |
|
2522 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2523 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2524 if (!k->oop_is_instance()) { |
|
2525 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2526 } |
|
2527 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
|
2528 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
|
2529 |
|
2530 { |
|
2531 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
|
2532 strcpy(*source_debug_extension_ptr, sde); |
|
2533 } |
|
2534 } |
|
2535 |
|
2536 return JVMTI_ERROR_NONE; |
|
2537 } /* end GetSourceDebugExtension */ |
|
2538 |
|
2539 // |
|
2540 // Object functions |
|
2541 // |
|
2542 |
|
2543 // hash_code_ptr - pre-checked for NULL |
|
2544 jvmtiError |
|
2545 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { |
|
2546 oop mirror = JNIHandles::resolve_external_guard(object); |
|
2547 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
|
2548 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); |
|
2549 |
|
2550 { |
|
2551 jint result = (jint) mirror->identity_hash(); |
|
2552 *hash_code_ptr = result; |
|
2553 } |
|
2554 return JVMTI_ERROR_NONE; |
|
2555 } /* end GetObjectHashCode */ |
|
2556 |
|
2557 |
|
2558 // info_ptr - pre-checked for NULL |
|
2559 jvmtiError |
|
2560 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { |
|
2561 JavaThread* calling_thread = JavaThread::current(); |
|
2562 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); |
|
2563 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { |
|
2564 // Some of the critical threads were not suspended. go to a safepoint and try again |
|
2565 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); |
|
2566 VMThread::execute(&op); |
|
2567 err = op.result(); |
|
2568 } |
|
2569 return err; |
|
2570 } /* end GetObjectMonitorUsage */ |
|
2571 |
|
2572 |
|
2573 // |
|
2574 // Field functions |
|
2575 // |
|
2576 |
|
2577 // name_ptr - NULL is a valid value, must be checked |
|
2578 // signature_ptr - NULL is a valid value, must be checked |
|
2579 // generic_ptr - NULL is a valid value, must be checked |
|
2580 jvmtiError |
|
2581 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
|
2582 JavaThread* current_thread = JavaThread::current(); |
|
2583 ResourceMark rm(current_thread); |
|
2584 if (name_ptr == NULL) { |
|
2585 // just don't return the name |
|
2586 } else { |
|
2587 const char* fieldName = fdesc_ptr->name()->as_C_string(); |
|
2588 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); |
|
2589 if (*name_ptr == NULL) |
|
2590 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
2591 strcpy(*name_ptr, fieldName); |
|
2592 } |
|
2593 if (signature_ptr== NULL) { |
|
2594 // just don't return the signature |
|
2595 } else { |
|
2596 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); |
|
2597 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); |
|
2598 if (*signature_ptr == NULL) |
|
2599 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
2600 strcpy(*signature_ptr, fieldSignature); |
|
2601 } |
|
2602 if (generic_ptr != NULL) { |
|
2603 *generic_ptr = NULL; |
|
2604 Symbol* soop = fdesc_ptr->generic_signature(); |
|
2605 if (soop != NULL) { |
|
2606 const char* gen_sig = soop->as_C_string(); |
|
2607 if (gen_sig != NULL) { |
|
2608 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
|
2609 if (err != JVMTI_ERROR_NONE) { |
|
2610 return err; |
|
2611 } |
|
2612 strcpy(*generic_ptr, gen_sig); |
|
2613 } |
|
2614 } |
|
2615 } |
|
2616 return JVMTI_ERROR_NONE; |
|
2617 } /* end GetFieldName */ |
|
2618 |
|
2619 |
|
2620 // declaring_class_ptr - pre-checked for NULL |
|
2621 jvmtiError |
|
2622 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { |
|
2623 |
|
2624 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); |
|
2625 return JVMTI_ERROR_NONE; |
|
2626 } /* end GetFieldDeclaringClass */ |
|
2627 |
|
2628 |
|
2629 // modifiers_ptr - pre-checked for NULL |
|
2630 jvmtiError |
|
2631 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { |
|
2632 |
|
2633 AccessFlags resultFlags = fdesc_ptr->access_flags(); |
|
2634 jint result = resultFlags.as_int(); |
|
2635 *modifiers_ptr = result; |
|
2636 |
|
2637 return JVMTI_ERROR_NONE; |
|
2638 } /* end GetFieldModifiers */ |
|
2639 |
|
2640 |
|
2641 // is_synthetic_ptr - pre-checked for NULL |
|
2642 jvmtiError |
|
2643 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { |
|
2644 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); |
|
2645 return JVMTI_ERROR_NONE; |
|
2646 } /* end IsFieldSynthetic */ |
|
2647 |
|
2648 |
|
2649 // |
|
2650 // Method functions |
|
2651 // |
|
2652 |
|
2653 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2654 // name_ptr - NULL is a valid value, must be checked |
|
2655 // signature_ptr - NULL is a valid value, must be checked |
|
2656 // generic_ptr - NULL is a valid value, must be checked |
|
2657 jvmtiError |
|
2658 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
|
2659 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2660 JavaThread* current_thread = JavaThread::current(); |
|
2661 |
|
2662 ResourceMark rm(current_thread); // get the utf8 name and signature |
|
2663 if (name_ptr == NULL) { |
|
2664 // just don't return the name |
|
2665 } else { |
|
2666 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); |
|
2667 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
|
2668 strcpy(*name_ptr, utf8_name); |
|
2669 } |
|
2670 if (signature_ptr == NULL) { |
|
2671 // just don't return the signature |
|
2672 } else { |
|
2673 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); |
|
2674 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); |
|
2675 strcpy(*signature_ptr, utf8_signature); |
|
2676 } |
|
2677 |
|
2678 if (generic_ptr != NULL) { |
|
2679 *generic_ptr = NULL; |
|
2680 Symbol* soop = method_oop->generic_signature(); |
|
2681 if (soop != NULL) { |
|
2682 const char* gen_sig = soop->as_C_string(); |
|
2683 if (gen_sig != NULL) { |
|
2684 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
|
2685 if (err != JVMTI_ERROR_NONE) { |
|
2686 return err; |
|
2687 } |
|
2688 strcpy(*generic_ptr, gen_sig); |
|
2689 } |
|
2690 } |
|
2691 } |
|
2692 return JVMTI_ERROR_NONE; |
|
2693 } /* end GetMethodName */ |
|
2694 |
|
2695 |
|
2696 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2697 // declaring_class_ptr - pre-checked for NULL |
|
2698 jvmtiError |
|
2699 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
|
2700 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2701 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); |
|
2702 return JVMTI_ERROR_NONE; |
|
2703 } /* end GetMethodDeclaringClass */ |
|
2704 |
|
2705 |
|
2706 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2707 // modifiers_ptr - pre-checked for NULL |
|
2708 jvmtiError |
|
2709 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
|
2710 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2711 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
|
2712 return JVMTI_ERROR_NONE; |
|
2713 } /* end GetMethodModifiers */ |
|
2714 |
|
2715 |
|
2716 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2717 // max_ptr - pre-checked for NULL |
|
2718 jvmtiError |
|
2719 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
|
2720 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2721 // get max stack |
|
2722 (*max_ptr) = method_oop->max_locals(); |
|
2723 return JVMTI_ERROR_NONE; |
|
2724 } /* end GetMaxLocals */ |
|
2725 |
|
2726 |
|
2727 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2728 // size_ptr - pre-checked for NULL |
|
2729 jvmtiError |
|
2730 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
|
2731 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2732 // get size of arguments |
|
2733 |
|
2734 (*size_ptr) = method_oop->size_of_parameters(); |
|
2735 return JVMTI_ERROR_NONE; |
|
2736 } /* end GetArgumentsSize */ |
|
2737 |
|
2738 |
|
2739 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2740 // entry_count_ptr - pre-checked for NULL |
|
2741 // table_ptr - pre-checked for NULL |
|
2742 jvmtiError |
|
2743 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
|
2744 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2745 if (!method_oop->has_linenumber_table()) { |
|
2746 return (JVMTI_ERROR_ABSENT_INFORMATION); |
|
2747 } |
|
2748 |
|
2749 // The line number table is compressed so we don't know how big it is until decompressed. |
|
2750 // Decompression is really fast so we just do it twice. |
|
2751 |
|
2752 // Compute size of table |
|
2753 jint num_entries = 0; |
|
2754 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); |
|
2755 while (stream.read_pair()) { |
|
2756 num_entries++; |
|
2757 } |
|
2758 jvmtiLineNumberEntry *jvmti_table = |
|
2759 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); |
|
2760 |
|
2761 // Fill jvmti table |
|
2762 if (num_entries > 0) { |
|
2763 int index = 0; |
|
2764 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); |
|
2765 while (stream.read_pair()) { |
|
2766 jvmti_table[index].start_location = (jlocation) stream.bci(); |
|
2767 jvmti_table[index].line_number = (jint) stream.line(); |
|
2768 index++; |
|
2769 } |
|
2770 assert(index == num_entries, "sanity check"); |
|
2771 } |
|
2772 |
|
2773 // Set up results |
|
2774 (*entry_count_ptr) = num_entries; |
|
2775 (*table_ptr) = jvmti_table; |
|
2776 |
|
2777 return JVMTI_ERROR_NONE; |
|
2778 } /* end GetLineNumberTable */ |
|
2779 |
|
2780 |
|
2781 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2782 // start_location_ptr - pre-checked for NULL |
|
2783 // end_location_ptr - pre-checked for NULL |
|
2784 jvmtiError |
|
2785 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
|
2786 |
|
2787 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2788 // get start and end location |
|
2789 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); |
|
2790 if (method_oop->code_size() == 0) { |
|
2791 // there is no code so there is no start location |
|
2792 (*start_location_ptr) = (jlocation)(-1); |
|
2793 } else { |
|
2794 (*start_location_ptr) = (jlocation)(0); |
|
2795 } |
|
2796 |
|
2797 return JVMTI_ERROR_NONE; |
|
2798 } /* end GetMethodLocation */ |
|
2799 |
|
2800 |
|
2801 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2802 // entry_count_ptr - pre-checked for NULL |
|
2803 // table_ptr - pre-checked for NULL |
|
2804 jvmtiError |
|
2805 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
|
2806 |
|
2807 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2808 JavaThread* current_thread = JavaThread::current(); |
|
2809 |
|
2810 // does the klass have any local variable information? |
|
2811 InstanceKlass* ik = method_oop->method_holder(); |
|
2812 if (!ik->access_flags().has_localvariable_table()) { |
|
2813 return (JVMTI_ERROR_ABSENT_INFORMATION); |
|
2814 } |
|
2815 |
|
2816 ConstantPool* constants = method_oop->constants(); |
|
2817 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
|
2818 |
|
2819 // in the vm localvariable table representation, 6 consecutive elements in the table |
|
2820 // represent a 6-tuple of shorts |
|
2821 // [start_pc, length, name_index, descriptor_index, signature_index, index] |
|
2822 jint num_entries = method_oop->localvariable_table_length(); |
|
2823 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) |
|
2824 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); |
|
2825 |
|
2826 if (num_entries > 0) { |
|
2827 LocalVariableTableElement* table = method_oop->localvariable_table_start(); |
|
2828 for (int i = 0; i < num_entries; i++) { |
|
2829 // get the 5 tuple information from the vm table |
|
2830 jlocation start_location = (jlocation) table[i].start_bci; |
|
2831 jint length = (jint) table[i].length; |
|
2832 int name_index = (int) table[i].name_cp_index; |
|
2833 int signature_index = (int) table[i].descriptor_cp_index; |
|
2834 int generic_signature_index = (int) table[i].signature_cp_index; |
|
2835 jint slot = (jint) table[i].slot; |
|
2836 |
|
2837 // get utf8 name and signature |
|
2838 char *name_buf = NULL; |
|
2839 char *sig_buf = NULL; |
|
2840 char *gen_sig_buf = NULL; |
|
2841 { |
|
2842 ResourceMark rm(current_thread); |
|
2843 |
|
2844 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); |
|
2845 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
|
2846 strcpy(name_buf, utf8_name); |
|
2847 |
|
2848 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); |
|
2849 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); |
|
2850 strcpy(sig_buf, utf8_signature); |
|
2851 |
|
2852 if (generic_signature_index > 0) { |
|
2853 const char *utf8_gen_sign = (const char *) |
|
2854 constants->symbol_at(generic_signature_index)->as_utf8(); |
|
2855 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); |
|
2856 strcpy(gen_sig_buf, utf8_gen_sign); |
|
2857 } |
|
2858 } |
|
2859 |
|
2860 // fill in the jvmti local variable table |
|
2861 jvmti_table[i].start_location = start_location; |
|
2862 jvmti_table[i].length = length; |
|
2863 jvmti_table[i].name = name_buf; |
|
2864 jvmti_table[i].signature = sig_buf; |
|
2865 jvmti_table[i].generic_signature = gen_sig_buf; |
|
2866 jvmti_table[i].slot = slot; |
|
2867 } |
|
2868 } |
|
2869 |
|
2870 // set results |
|
2871 (*entry_count_ptr) = num_entries; |
|
2872 (*table_ptr) = jvmti_table; |
|
2873 |
|
2874 return JVMTI_ERROR_NONE; |
|
2875 } /* end GetLocalVariableTable */ |
|
2876 |
|
2877 |
|
2878 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2879 // bytecode_count_ptr - pre-checked for NULL |
|
2880 // bytecodes_ptr - pre-checked for NULL |
|
2881 jvmtiError |
|
2882 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
|
2883 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2884 |
|
2885 HandleMark hm; |
|
2886 methodHandle method(method_oop); |
|
2887 jint size = (jint)method->code_size(); |
|
2888 jvmtiError err = allocate(size, bytecodes_ptr); |
|
2889 if (err != JVMTI_ERROR_NONE) { |
|
2890 return err; |
|
2891 } |
|
2892 |
|
2893 (*bytecode_count_ptr) = size; |
|
2894 // get byte codes |
|
2895 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); |
|
2896 |
|
2897 return JVMTI_ERROR_NONE; |
|
2898 } /* end GetBytecodes */ |
|
2899 |
|
2900 |
|
2901 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2902 // is_native_ptr - pre-checked for NULL |
|
2903 jvmtiError |
|
2904 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
|
2905 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2906 (*is_native_ptr) = method_oop->is_native(); |
|
2907 return JVMTI_ERROR_NONE; |
|
2908 } /* end IsMethodNative */ |
|
2909 |
|
2910 |
|
2911 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2912 // is_synthetic_ptr - pre-checked for NULL |
|
2913 jvmtiError |
|
2914 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
|
2915 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2916 (*is_synthetic_ptr) = method_oop->is_synthetic(); |
|
2917 return JVMTI_ERROR_NONE; |
|
2918 } /* end IsMethodSynthetic */ |
|
2919 |
|
2920 |
|
2921 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2922 // is_obsolete_ptr - pre-checked for NULL |
|
2923 jvmtiError |
|
2924 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
|
2925 if (use_version_1_0_semantics() && |
|
2926 get_capabilities()->can_redefine_classes == 0) { |
|
2927 // This JvmtiEnv requested version 1.0 semantics and this function |
|
2928 // requires the can_redefine_classes capability in version 1.0 so |
|
2929 // we need to return an error here. |
|
2930 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
|
2931 } |
|
2932 |
|
2933 if (method_oop == NULL || method_oop->is_obsolete()) { |
|
2934 *is_obsolete_ptr = true; |
|
2935 } else { |
|
2936 *is_obsolete_ptr = false; |
|
2937 } |
|
2938 return JVMTI_ERROR_NONE; |
|
2939 } /* end IsMethodObsolete */ |
|
2940 |
|
2941 // |
|
2942 // Raw Monitor functions |
|
2943 // |
|
2944 |
|
2945 // name - pre-checked for NULL |
|
2946 // monitor_ptr - pre-checked for NULL |
|
2947 jvmtiError |
|
2948 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { |
|
2949 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); |
|
2950 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); |
|
2951 |
|
2952 *monitor_ptr = (jrawMonitorID)rmonitor; |
|
2953 |
|
2954 return JVMTI_ERROR_NONE; |
|
2955 } /* end CreateRawMonitor */ |
|
2956 |
|
2957 |
|
2958 // rmonitor - pre-checked for validity |
|
2959 jvmtiError |
|
2960 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { |
|
2961 if (Threads::number_of_threads() == 0) { |
|
2962 // Remove this monitor from pending raw monitors list |
|
2963 // if it has entered in onload or start phase. |
|
2964 JvmtiPendingMonitors::destroy(rmonitor); |
|
2965 } else { |
|
2966 Thread* thread = Thread::current(); |
|
2967 if (rmonitor->is_entered(thread)) { |
|
2968 // The caller owns this monitor which we are about to destroy. |
|
2969 // We exit the underlying synchronization object so that the |
|
2970 // "delete monitor" call below can work without an assertion |
|
2971 // failure on systems that don't like destroying synchronization |
|
2972 // objects that are locked. |
|
2973 int r; |
|
2974 intptr_t recursion = rmonitor->recursions(); |
|
2975 for (intptr_t i=0; i <= recursion; i++) { |
|
2976 r = rmonitor->raw_exit(thread); |
|
2977 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); |
|
2978 if (r != ObjectMonitor::OM_OK) { // robustness |
|
2979 return JVMTI_ERROR_INTERNAL; |
|
2980 } |
|
2981 } |
|
2982 } |
|
2983 if (rmonitor->owner() != NULL) { |
|
2984 // The caller is trying to destroy a monitor that is locked by |
|
2985 // someone else. While this is not forbidden by the JVMTI |
|
2986 // spec, it will cause an assertion failure on systems that don't |
|
2987 // like destroying synchronization objects that are locked. |
|
2988 // We indicate a problem with the error return (and leak the |
|
2989 // monitor's memory). |
|
2990 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
2991 } |
|
2992 } |
|
2993 |
|
2994 delete rmonitor; |
|
2995 |
|
2996 return JVMTI_ERROR_NONE; |
|
2997 } /* end DestroyRawMonitor */ |
|
2998 |
|
2999 |
|
3000 // rmonitor - pre-checked for validity |
|
3001 jvmtiError |
|
3002 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { |
|
3003 if (Threads::number_of_threads() == 0) { |
|
3004 // No JavaThreads exist so ObjectMonitor enter cannot be |
|
3005 // used, add this raw monitor to the pending list. |
|
3006 // The pending monitors will be actually entered when |
|
3007 // the VM is setup. |
|
3008 // See transition_pending_raw_monitors in create_vm() |
|
3009 // in thread.cpp. |
|
3010 JvmtiPendingMonitors::enter(rmonitor); |
|
3011 } else { |
|
3012 int r; |
|
3013 Thread* thread = Thread::current(); |
|
3014 |
|
3015 if (thread->is_Java_thread()) { |
|
3016 JavaThread* current_thread = (JavaThread*)thread; |
|
3017 |
|
3018 #ifdef PROPER_TRANSITIONS |
|
3019 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3020 ThreadInVMfromUnknown __tiv; |
|
3021 { |
|
3022 ThreadBlockInVM __tbivm(current_thread); |
|
3023 r = rmonitor->raw_enter(current_thread); |
|
3024 } |
|
3025 #else |
|
3026 /* Transition to thread_blocked without entering vm state */ |
|
3027 /* This is really evil. Normally you can't undo _thread_blocked */ |
|
3028 /* transitions like this because it would cause us to miss a */ |
|
3029 /* safepoint but since the thread was already in _thread_in_native */ |
|
3030 /* the thread is not leaving a safepoint safe state and it will */ |
|
3031 /* block when it tries to return from native. We can't safepoint */ |
|
3032 /* block in here because we could deadlock the vmthread. Blech. */ |
|
3033 |
|
3034 JavaThreadState state = current_thread->thread_state(); |
|
3035 assert(state == _thread_in_native, "Must be _thread_in_native"); |
|
3036 // frame should already be walkable since we are in native |
|
3037 assert(!current_thread->has_last_Java_frame() || |
|
3038 current_thread->frame_anchor()->walkable(), "Must be walkable"); |
|
3039 current_thread->set_thread_state(_thread_blocked); |
|
3040 |
|
3041 r = rmonitor->raw_enter(current_thread); |
|
3042 // restore state, still at a safepoint safe state |
|
3043 current_thread->set_thread_state(state); |
|
3044 |
|
3045 #endif /* PROPER_TRANSITIONS */ |
|
3046 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); |
|
3047 } else { |
|
3048 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3049 r = rmonitor->raw_enter(thread); |
|
3050 } else { |
|
3051 ShouldNotReachHere(); |
|
3052 } |
|
3053 } |
|
3054 |
|
3055 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3056 return JVMTI_ERROR_INTERNAL; |
|
3057 } |
|
3058 } |
|
3059 return JVMTI_ERROR_NONE; |
|
3060 } /* end RawMonitorEnter */ |
|
3061 |
|
3062 |
|
3063 // rmonitor - pre-checked for validity |
|
3064 jvmtiError |
|
3065 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { |
|
3066 jvmtiError err = JVMTI_ERROR_NONE; |
|
3067 |
|
3068 if (Threads::number_of_threads() == 0) { |
|
3069 // No JavaThreads exist so just remove this monitor from the pending list. |
|
3070 // Bool value from exit is false if rmonitor is not in the list. |
|
3071 if (!JvmtiPendingMonitors::exit(rmonitor)) { |
|
3072 err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3073 } |
|
3074 } else { |
|
3075 int r; |
|
3076 Thread* thread = Thread::current(); |
|
3077 |
|
3078 if (thread->is_Java_thread()) { |
|
3079 JavaThread* current_thread = (JavaThread*)thread; |
|
3080 #ifdef PROPER_TRANSITIONS |
|
3081 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3082 ThreadInVMfromUnknown __tiv; |
|
3083 #endif /* PROPER_TRANSITIONS */ |
|
3084 r = rmonitor->raw_exit(current_thread); |
|
3085 } else { |
|
3086 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3087 r = rmonitor->raw_exit(thread); |
|
3088 } else { |
|
3089 ShouldNotReachHere(); |
|
3090 } |
|
3091 } |
|
3092 |
|
3093 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3094 err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3095 } else { |
|
3096 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); |
|
3097 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3098 err = JVMTI_ERROR_INTERNAL; |
|
3099 } |
|
3100 } |
|
3101 } |
|
3102 return err; |
|
3103 } /* end RawMonitorExit */ |
|
3104 |
|
3105 |
|
3106 // rmonitor - pre-checked for validity |
|
3107 jvmtiError |
|
3108 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { |
|
3109 int r; |
|
3110 Thread* thread = Thread::current(); |
|
3111 |
|
3112 if (thread->is_Java_thread()) { |
|
3113 JavaThread* current_thread = (JavaThread*)thread; |
|
3114 #ifdef PROPER_TRANSITIONS |
|
3115 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3116 ThreadInVMfromUnknown __tiv; |
|
3117 { |
|
3118 ThreadBlockInVM __tbivm(current_thread); |
|
3119 r = rmonitor->raw_wait(millis, true, current_thread); |
|
3120 } |
|
3121 #else |
|
3122 /* Transition to thread_blocked without entering vm state */ |
|
3123 /* This is really evil. Normally you can't undo _thread_blocked */ |
|
3124 /* transitions like this because it would cause us to miss a */ |
|
3125 /* safepoint but since the thread was already in _thread_in_native */ |
|
3126 /* the thread is not leaving a safepoint safe state and it will */ |
|
3127 /* block when it tries to return from native. We can't safepoint */ |
|
3128 /* block in here because we could deadlock the vmthread. Blech. */ |
|
3129 |
|
3130 JavaThreadState state = current_thread->thread_state(); |
|
3131 assert(state == _thread_in_native, "Must be _thread_in_native"); |
|
3132 // frame should already be walkable since we are in native |
|
3133 assert(!current_thread->has_last_Java_frame() || |
|
3134 current_thread->frame_anchor()->walkable(), "Must be walkable"); |
|
3135 current_thread->set_thread_state(_thread_blocked); |
|
3136 |
|
3137 r = rmonitor->raw_wait(millis, true, current_thread); |
|
3138 // restore state, still at a safepoint safe state |
|
3139 current_thread->set_thread_state(state); |
|
3140 |
|
3141 #endif /* PROPER_TRANSITIONS */ |
|
3142 } else { |
|
3143 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3144 r = rmonitor->raw_wait(millis, true, thread); |
|
3145 } else { |
|
3146 ShouldNotReachHere(); |
|
3147 } |
|
3148 } |
|
3149 |
|
3150 switch (r) { |
|
3151 case ObjectMonitor::OM_INTERRUPTED: |
|
3152 return JVMTI_ERROR_INTERRUPT; |
|
3153 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: |
|
3154 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3155 } |
|
3156 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); |
|
3157 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3158 return JVMTI_ERROR_INTERNAL; |
|
3159 } |
|
3160 |
|
3161 return JVMTI_ERROR_NONE; |
|
3162 } /* end RawMonitorWait */ |
|
3163 |
|
3164 |
|
3165 // rmonitor - pre-checked for validity |
|
3166 jvmtiError |
|
3167 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { |
|
3168 int r; |
|
3169 Thread* thread = Thread::current(); |
|
3170 |
|
3171 if (thread->is_Java_thread()) { |
|
3172 JavaThread* current_thread = (JavaThread*)thread; |
|
3173 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3174 ThreadInVMfromUnknown __tiv; |
|
3175 r = rmonitor->raw_notify(current_thread); |
|
3176 } else { |
|
3177 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3178 r = rmonitor->raw_notify(thread); |
|
3179 } else { |
|
3180 ShouldNotReachHere(); |
|
3181 } |
|
3182 } |
|
3183 |
|
3184 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3185 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3186 } |
|
3187 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); |
|
3188 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3189 return JVMTI_ERROR_INTERNAL; |
|
3190 } |
|
3191 |
|
3192 return JVMTI_ERROR_NONE; |
|
3193 } /* end RawMonitorNotify */ |
|
3194 |
|
3195 |
|
3196 // rmonitor - pre-checked for validity |
|
3197 jvmtiError |
|
3198 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { |
|
3199 int r; |
|
3200 Thread* thread = Thread::current(); |
|
3201 |
|
3202 if (thread->is_Java_thread()) { |
|
3203 JavaThread* current_thread = (JavaThread*)thread; |
|
3204 ThreadInVMfromUnknown __tiv; |
|
3205 r = rmonitor->raw_notifyAll(current_thread); |
|
3206 } else { |
|
3207 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3208 r = rmonitor->raw_notifyAll(thread); |
|
3209 } else { |
|
3210 ShouldNotReachHere(); |
|
3211 } |
|
3212 } |
|
3213 |
|
3214 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3215 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3216 } |
|
3217 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); |
|
3218 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3219 return JVMTI_ERROR_INTERNAL; |
|
3220 } |
|
3221 |
|
3222 return JVMTI_ERROR_NONE; |
|
3223 } /* end RawMonitorNotifyAll */ |
|
3224 |
|
3225 |
|
3226 // |
|
3227 // JNI Function Interception functions |
|
3228 // |
|
3229 |
|
3230 |
|
3231 // function_table - pre-checked for NULL |
|
3232 jvmtiError |
|
3233 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { |
|
3234 // Copy jni function table at safepoint. |
|
3235 VM_JNIFunctionTableCopier copier(function_table); |
|
3236 VMThread::execute(&copier); |
|
3237 |
|
3238 return JVMTI_ERROR_NONE; |
|
3239 } /* end SetJNIFunctionTable */ |
|
3240 |
|
3241 |
|
3242 // function_table - pre-checked for NULL |
|
3243 jvmtiError |
|
3244 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { |
|
3245 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); |
|
3246 if (*function_table == NULL) |
|
3247 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
3248 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); |
|
3249 return JVMTI_ERROR_NONE; |
|
3250 } /* end GetJNIFunctionTable */ |
|
3251 |
|
3252 |
|
3253 // |
|
3254 // Event Management functions |
|
3255 // |
|
3256 |
|
3257 jvmtiError |
|
3258 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { |
|
3259 // can only generate two event types |
|
3260 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && |
|
3261 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { |
|
3262 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
3263 } |
|
3264 |
|
3265 // for compiled_method_load events we must check that the environment |
|
3266 // has the can_generate_compiled_method_load_events capability. |
|
3267 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { |
|
3268 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { |
|
3269 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
|
3270 } |
|
3271 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); |
|
3272 } else { |
|
3273 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); |
|
3274 } |
|
3275 |
|
3276 } /* end GenerateEvents */ |
|
3277 |
|
3278 |
|
3279 // |
|
3280 // Extension Mechanism functions |
|
3281 // |
|
3282 |
|
3283 // extension_count_ptr - pre-checked for NULL |
|
3284 // extensions - pre-checked for NULL |
|
3285 jvmtiError |
|
3286 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { |
|
3287 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); |
|
3288 } /* end GetExtensionFunctions */ |
|
3289 |
|
3290 |
|
3291 // extension_count_ptr - pre-checked for NULL |
|
3292 // extensions - pre-checked for NULL |
|
3293 jvmtiError |
|
3294 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { |
|
3295 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); |
|
3296 } /* end GetExtensionEvents */ |
|
3297 |
|
3298 |
|
3299 // callback - NULL is a valid value, must be checked |
|
3300 jvmtiError |
|
3301 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { |
|
3302 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); |
|
3303 } /* end SetExtensionEventCallback */ |
|
3304 |
|
3305 // |
|
3306 // Timers functions |
|
3307 // |
|
3308 |
|
3309 // info_ptr - pre-checked for NULL |
|
3310 jvmtiError |
|
3311 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3312 os::current_thread_cpu_time_info(info_ptr); |
|
3313 return JVMTI_ERROR_NONE; |
|
3314 } /* end GetCurrentThreadCpuTimerInfo */ |
|
3315 |
|
3316 |
|
3317 // nanos_ptr - pre-checked for NULL |
|
3318 jvmtiError |
|
3319 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { |
|
3320 *nanos_ptr = os::current_thread_cpu_time(); |
|
3321 return JVMTI_ERROR_NONE; |
|
3322 } /* end GetCurrentThreadCpuTime */ |
|
3323 |
|
3324 |
|
3325 // info_ptr - pre-checked for NULL |
|
3326 jvmtiError |
|
3327 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3328 os::thread_cpu_time_info(info_ptr); |
|
3329 return JVMTI_ERROR_NONE; |
|
3330 } /* end GetThreadCpuTimerInfo */ |
|
3331 |
|
3332 |
|
3333 // Threads_lock NOT held, java_thread not protected by lock |
|
3334 // java_thread - pre-checked |
|
3335 // nanos_ptr - pre-checked for NULL |
|
3336 jvmtiError |
|
3337 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { |
|
3338 *nanos_ptr = os::thread_cpu_time(java_thread); |
|
3339 return JVMTI_ERROR_NONE; |
|
3340 } /* end GetThreadCpuTime */ |
|
3341 |
|
3342 |
|
3343 // info_ptr - pre-checked for NULL |
|
3344 jvmtiError |
|
3345 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3346 os::javaTimeNanos_info(info_ptr); |
|
3347 return JVMTI_ERROR_NONE; |
|
3348 } /* end GetTimerInfo */ |
|
3349 |
|
3350 |
|
3351 // nanos_ptr - pre-checked for NULL |
|
3352 jvmtiError |
|
3353 JvmtiEnv::GetTime(jlong* nanos_ptr) { |
|
3354 *nanos_ptr = os::javaTimeNanos(); |
|
3355 return JVMTI_ERROR_NONE; |
|
3356 } /* end GetTime */ |
|
3357 |
|
3358 |
|
3359 // processor_count_ptr - pre-checked for NULL |
|
3360 jvmtiError |
|
3361 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { |
|
3362 *processor_count_ptr = os::active_processor_count(); |
|
3363 return JVMTI_ERROR_NONE; |
|
3364 } /* end GetAvailableProcessors */ |
|
3365 |
|
3366 // |
|
3367 // System Properties functions |
|
3368 // |
|
3369 |
|
3370 // count_ptr - pre-checked for NULL |
|
3371 // property_ptr - pre-checked for NULL |
|
3372 jvmtiError |
|
3373 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { |
|
3374 jvmtiError err = JVMTI_ERROR_NONE; |
|
3375 |
|
3376 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); |
|
3377 |
|
3378 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); |
|
3379 if (err != JVMTI_ERROR_NONE) { |
|
3380 return err; |
|
3381 } |
|
3382 int i = 0 ; |
|
3383 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { |
|
3384 const char *key = p->key(); |
|
3385 char **tmp_value = *property_ptr+i; |
|
3386 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); |
|
3387 if (err == JVMTI_ERROR_NONE) { |
|
3388 strcpy(*tmp_value, key); |
|
3389 } else { |
|
3390 // clean up previously allocated memory. |
|
3391 for (int j=0; j<i; j++) { |
|
3392 Deallocate((unsigned char*)*property_ptr+j); |
|
3393 } |
|
3394 Deallocate((unsigned char*)property_ptr); |
|
3395 break; |
|
3396 } |
|
3397 } |
|
3398 return err; |
|
3399 } /* end GetSystemProperties */ |
|
3400 |
|
3401 |
|
3402 // property - pre-checked for NULL |
|
3403 // value_ptr - pre-checked for NULL |
|
3404 jvmtiError |
|
3405 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { |
|
3406 jvmtiError err = JVMTI_ERROR_NONE; |
|
3407 const char *value; |
|
3408 |
|
3409 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); |
|
3410 if (value == NULL) { |
|
3411 err = JVMTI_ERROR_NOT_AVAILABLE; |
|
3412 } else { |
|
3413 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); |
|
3414 if (err == JVMTI_ERROR_NONE) { |
|
3415 strcpy(*value_ptr, value); |
|
3416 } |
|
3417 } |
|
3418 return err; |
|
3419 } /* end GetSystemProperty */ |
|
3420 |
|
3421 |
|
3422 // property - pre-checked for NULL |
|
3423 // value - NULL is a valid value, must be checked |
|
3424 jvmtiError |
|
3425 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
|
3426 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
|
3427 |
|
3428 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { |
|
3429 if (strcmp(property, p->key()) == 0) { |
|
3430 if (p->set_value((char *)value_ptr)) { |
|
3431 err = JVMTI_ERROR_NONE; |
|
3432 } |
|
3433 } |
|
3434 } |
|
3435 return err; |
|
3436 } /* end SetSystemProperty */ |