0
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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25
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26 # include "incls/_precompiled.incl"
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27 # include "incls/_jvmtiEnv.cpp.incl"
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28
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29
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30 #define FIXLATER 0 // REMOVE this when completed.
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31
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32 // FIXLATER: hook into JvmtiTrace
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33 #define TraceJVMTICalls false
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34
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35 JvmtiEnv::JvmtiEnv() : JvmtiEnvBase() {
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36 }
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37
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38 JvmtiEnv::~JvmtiEnv() {
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39 }
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40
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41 JvmtiEnv*
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42 JvmtiEnv::create_a_jvmti() {
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43 return new JvmtiEnv();
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44 }
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45
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46 // VM operation class to copy jni function table at safepoint.
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47 // More than one java threads or jvmti agents may be reading/
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48 // modifying jni function tables. To reduce the risk of bad
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49 // interaction b/w these threads it is copied at safepoint.
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50 class VM_JNIFunctionTableCopier : public VM_Operation {
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51 private:
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52 const struct JNINativeInterface_ *_function_table;
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53 public:
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54 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) {
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55 _function_table = func_tbl;
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56 };
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57
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58 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; }
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59 void doit() {
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60 copy_jni_function_table(_function_table);
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61 };
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62 };
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63
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64 //
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65 // Do not change the "prefix" marker below, everything above it is copied
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66 // unchanged into the filled stub, everything below is controlled by the
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67 // stub filler (only method bodies are carried forward, and then only for
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68 // functionality still in the spec).
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69 //
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70 // end file prefix
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71
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72 //
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73 // Memory Management functions
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74 //
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75
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76 // mem_ptr - pre-checked for NULL
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77 jvmtiError
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78 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) {
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79 return allocate(size, mem_ptr);
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80 } /* end Allocate */
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81
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82
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83 // mem - NULL is a valid value, must be checked
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84 jvmtiError
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85 JvmtiEnv::Deallocate(unsigned char* mem) {
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86 return deallocate(mem);
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87 } /* end Deallocate */
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88
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89 // Threads_lock NOT held, java_thread not protected by lock
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90 // java_thread - pre-checked
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91 // data - NULL is a valid value, must be checked
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92 jvmtiError
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93 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) {
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94 JvmtiThreadState* state = java_thread->jvmti_thread_state();
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95 if (state == NULL) {
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96 if (data == NULL) {
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97 // leaving state unset same as data set to NULL
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98 return JVMTI_ERROR_NONE;
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99 }
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100 // otherwise, create the state
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101 state = JvmtiThreadState::state_for(java_thread);
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102 }
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103 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data);
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104 return JVMTI_ERROR_NONE;
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105 } /* end SetThreadLocalStorage */
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106
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107
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108 // Threads_lock NOT held
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109 // thread - NOT pre-checked
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110 // data_ptr - pre-checked for NULL
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111 jvmtiError
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112 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) {
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113 JavaThread* current_thread = JavaThread::current();
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114 if (thread == NULL) {
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115 JvmtiThreadState* state = current_thread->jvmti_thread_state();
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116 *data_ptr = (state == NULL) ? NULL :
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117 state->env_thread_state(this)->get_agent_thread_local_storage_data();
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118 } else {
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119
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120 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition
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121 // the thread to _thread_in_vm. However, when the TLS for a thread
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122 // other than the current thread is required we need to transition
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123 // from native so as to resolve the jthread.
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124
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125 ThreadInVMfromNative __tiv(current_thread);
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126 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread)
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127 debug_only(VMNativeEntryWrapper __vew;)
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128
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129 oop thread_oop = JNIHandles::resolve_external_guard(thread);
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130 if (thread_oop == NULL) {
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131 return JVMTI_ERROR_INVALID_THREAD;
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132 }
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133 if (!thread_oop->is_a(SystemDictionary::thread_klass())) {
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134 return JVMTI_ERROR_INVALID_THREAD;
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135 }
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136 JavaThread* java_thread = java_lang_Thread::thread(thread_oop);
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137 if (java_thread == NULL) {
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138 return JVMTI_ERROR_THREAD_NOT_ALIVE;
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139 }
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140 JvmtiThreadState* state = java_thread->jvmti_thread_state();
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141 *data_ptr = (state == NULL) ? NULL :
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142 state->env_thread_state(this)->get_agent_thread_local_storage_data();
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143 }
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144 return JVMTI_ERROR_NONE;
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145 } /* end GetThreadLocalStorage */
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146
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147 //
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148 // Class functions
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149 //
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150
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151 // class_count_ptr - pre-checked for NULL
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152 // classes_ptr - pre-checked for NULL
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153 jvmtiError
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154 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) {
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155 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr);
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156 } /* end GetLoadedClasses */
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157
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158
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159 // initiating_loader - NULL is a valid value, must be checked
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160 // class_count_ptr - pre-checked for NULL
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161 // classes_ptr - pre-checked for NULL
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162 jvmtiError
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163 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) {
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164 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader,
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165 class_count_ptr, classes_ptr);
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166 } /* end GetClassLoaderClasses */
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167
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168 // k_mirror - may be primitive, this must be checked
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169 // is_modifiable_class_ptr - pre-checked for NULL
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170 jvmtiError
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171 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) {
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172 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)?
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173 JNI_TRUE : JNI_FALSE;
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174 return JVMTI_ERROR_NONE;
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175 } /* end IsModifiableClass */
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176
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177 // class_count - pre-checked to be greater than or equal to 0
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178 // classes - pre-checked for NULL
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179 jvmtiError
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180 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
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181 //TODO: add locking
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182
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183 int index;
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184 JavaThread* current_thread = JavaThread::current();
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185 ResourceMark rm(current_thread);
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186
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187 jvmtiClassDefinition* class_definitions =
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188 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count);
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189 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY);
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190
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191 for (index = 0; index < class_count; index++) {
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192 HandleMark hm(current_thread);
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193
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194 jclass jcls = classes[index];
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195 oop k_mirror = JNIHandles::resolve_external_guard(jcls);
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196 if (k_mirror == NULL) {
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197 return JVMTI_ERROR_INVALID_CLASS;
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198 }
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199 if (!k_mirror->is_a(SystemDictionary::class_klass())) {
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200 return JVMTI_ERROR_INVALID_CLASS;
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201 }
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202
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203 if (java_lang_Class::is_primitive(k_mirror)) {
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204 return JVMTI_ERROR_UNMODIFIABLE_CLASS;
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205 }
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206
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207 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
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208 KlassHandle klass(current_thread, k_oop);
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209
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210 jint status = klass->jvmti_class_status();
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211 if (status & (JVMTI_CLASS_STATUS_ERROR)) {
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212 return JVMTI_ERROR_INVALID_CLASS;
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213 }
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214 if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
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215 return JVMTI_ERROR_UNMODIFIABLE_CLASS;
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216 }
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217
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218 instanceKlassHandle ikh(current_thread, k_oop);
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219 if (ikh->get_cached_class_file_bytes() == NULL) {
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220 // not cached, we need to reconstitute the class file from VM representation
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221 constantPoolHandle constants(current_thread, ikh->constants());
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222 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it
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223
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224 JvmtiClassFileReconstituter reconstituter(ikh);
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225 if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
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226 return reconstituter.get_error();
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227 }
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228
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229 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size();
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230 class_definitions[index].class_bytes = (unsigned char*)
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231 reconstituter.class_file_bytes();
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232 } else {
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233 // it is cached, get it from the cache
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234 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len();
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235 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes();
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236 }
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237 class_definitions[index].klass = jcls;
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238 }
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239 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
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240 VMThread::execute(&op);
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241 return (op.check_error());
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242 } /* end RetransformClasses */
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243
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244
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245 // class_count - pre-checked to be greater than or equal to 0
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246 // class_definitions - pre-checked for NULL
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247 jvmtiError
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248 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) {
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249 //TODO: add locking
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250 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
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251 VMThread::execute(&op);
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252 return (op.check_error());
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253 } /* end RedefineClasses */
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254
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255
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256 //
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257 // Object functions
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258 //
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259
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260 // size_ptr - pre-checked for NULL
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261 jvmtiError
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262 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) {
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263 oop mirror = JNIHandles::resolve_external_guard(object);
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264 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
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265
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266 if (mirror->klass() == SystemDictionary::class_klass()) {
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267 if (!java_lang_Class::is_primitive(mirror)) {
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268 mirror = java_lang_Class::as_klassOop(mirror);
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269 assert(mirror != NULL, "class for non-primitive mirror must exist");
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270 }
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271 }
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272
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273 *size_ptr = mirror->size() * wordSize;
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274 return JVMTI_ERROR_NONE;
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275 } /* end GetObjectSize */
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276
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277 //
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278 // Method functions
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279 //
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280
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281 // prefix - NULL is a valid value, must be checked
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282 jvmtiError
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283 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) {
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284 return prefix == NULL?
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285 SetNativeMethodPrefixes(0, NULL) :
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286 SetNativeMethodPrefixes(1, (char**)&prefix);
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287 } /* end SetNativeMethodPrefix */
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288
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289
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290 // prefix_count - pre-checked to be greater than or equal to 0
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291 // prefixes - pre-checked for NULL
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292 jvmtiError
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293 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) {
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294 // Have to grab JVMTI thread state lock to be sure that some thread
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295 // isn't accessing the prefixes at the same time we are setting them.
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296 // No locks during VM bring-up.
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297 if (Threads::number_of_threads() == 0) {
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298 return set_native_method_prefixes(prefix_count, prefixes);
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299 } else {
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300 MutexLocker mu(JvmtiThreadState_lock);
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301 return set_native_method_prefixes(prefix_count, prefixes);
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302 }
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303 } /* end SetNativeMethodPrefixes */
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304
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305 //
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306 // Event Management functions
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307 //
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308
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309 // callbacks - NULL is a valid value, must be checked
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310 // size_of_callbacks - pre-checked to be greater than or equal to 0
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311 jvmtiError
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312 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) {
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313 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks);
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314 return JVMTI_ERROR_NONE;
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315 } /* end SetEventCallbacks */
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316
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317
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318 // event_thread - NULL is a valid value, must be checked
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319 jvmtiError
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320 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) {
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321 JavaThread* java_thread = NULL;
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322 if (event_thread != NULL) {
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323 oop thread_oop = JNIHandles::resolve_external_guard(event_thread);
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324 if (thread_oop == NULL) {
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325 return JVMTI_ERROR_INVALID_THREAD;
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326 }
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327 if (!thread_oop->is_a(SystemDictionary::thread_klass())) {
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328 return JVMTI_ERROR_INVALID_THREAD;
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329 }
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330 java_thread = java_lang_Thread::thread(thread_oop);
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331 if (java_thread == NULL) {
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332 return JVMTI_ERROR_THREAD_NOT_ALIVE;
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333 }
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334 }
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335
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336 // event_type must be valid
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337 if (!JvmtiEventController::is_valid_event_type(event_type)) {
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338 return JVMTI_ERROR_INVALID_EVENT_TYPE;
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339 }
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340
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341 // global events cannot be controlled at thread level.
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342 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) {
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343 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
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344 }
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345
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346 bool enabled = (mode == JVMTI_ENABLE);
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347
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348 // assure that needed capabilities are present
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349 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) {
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350 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
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351 }
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352
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353 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) {
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354 record_class_file_load_hook_enabled();
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355 }
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356 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled);
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357
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358 return JVMTI_ERROR_NONE;
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359 } /* end SetEventNotificationMode */
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360
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361 //
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362 // Capability functions
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363 //
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364
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365 // capabilities_ptr - pre-checked for NULL
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366 jvmtiError
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367 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) {
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368 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(),
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369 get_prohibited_capabilities(),
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370 capabilities_ptr);
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371 return JVMTI_ERROR_NONE;
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372 } /* end GetPotentialCapabilities */
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373
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374
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375 // capabilities_ptr - pre-checked for NULL
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376 jvmtiError
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377 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) {
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378 return JvmtiManageCapabilities::add_capabilities(get_capabilities(),
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379 get_prohibited_capabilities(),
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380 capabilities_ptr,
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381 get_capabilities());
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382 } /* end AddCapabilities */
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383
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384
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385 // capabilities_ptr - pre-checked for NULL
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386 jvmtiError
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387 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) {
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388 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities());
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389 return JVMTI_ERROR_NONE;
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390 } /* end RelinquishCapabilities */
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391
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392
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393 // capabilities_ptr - pre-checked for NULL
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394 jvmtiError
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395 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) {
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396 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr);
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397 return JVMTI_ERROR_NONE;
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398 } /* end GetCapabilities */
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399
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400 //
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401 // Class Loader Search functions
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402 //
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403
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404 // segment - pre-checked for NULL
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405 jvmtiError
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406 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) {
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407 jvmtiPhase phase = get_phase();
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408 if (phase == JVMTI_PHASE_ONLOAD) {
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409 Arguments::append_sysclasspath(segment);
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410 return JVMTI_ERROR_NONE;
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411 } else {
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412 assert(phase == JVMTI_PHASE_LIVE, "sanity check");
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413
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414 // create the zip entry
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415 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
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416 if (zip_entry == NULL) {
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417 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
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418 }
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419
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420 // lock the loader
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421 Thread* thread = Thread::current();
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422 HandleMark hm;
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423 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock());
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424
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425 ObjectLocker ol(loader_lock, thread);
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426
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427 // add the jar file to the bootclasspath
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428 if (TraceClassLoading) {
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429 tty->print_cr("[Opened %s]", zip_entry->name());
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430 }
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431 ClassLoader::add_to_list(zip_entry);
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432 return JVMTI_ERROR_NONE;
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433 }
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434
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435 } /* end AddToBootstrapClassLoaderSearch */
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436
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437
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438 // segment - pre-checked for NULL
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439 jvmtiError
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440 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) {
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441 jvmtiPhase phase = get_phase();
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442
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443 if (phase == JVMTI_PHASE_ONLOAD) {
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444 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
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445 if (strcmp("java.class.path", p->key()) == 0) {
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446 p->append_value(segment);
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447 break;
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448 }
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449 }
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450 return JVMTI_ERROR_NONE;
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451 } else {
|
|
452 HandleMark hm;
|
|
453
|
|
454 assert(phase == JVMTI_PHASE_LIVE, "sanity check");
|
|
455
|
|
456 // create the zip entry (which will open the zip file and hence
|
|
457 // check that the segment is indeed a zip file).
|
|
458 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
|
|
459 if (zip_entry == NULL) {
|
|
460 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
461 }
|
|
462 delete zip_entry; // no longer needed
|
|
463
|
|
464 // lock the loader
|
|
465 Thread* THREAD = Thread::current();
|
|
466 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
|
|
467
|
|
468 ObjectLocker ol(loader, THREAD);
|
|
469
|
|
470 // need the path as java.lang.String
|
|
471 Handle path = java_lang_String::create_from_str(segment, THREAD);
|
|
472 if (HAS_PENDING_EXCEPTION) {
|
|
473 CLEAR_PENDING_EXCEPTION;
|
|
474 return JVMTI_ERROR_INTERNAL;
|
|
475 }
|
|
476
|
|
477 instanceKlassHandle loader_ik(THREAD, loader->klass());
|
|
478
|
|
479 // Invoke the appendToClassPathForInstrumentation method - if the method
|
|
480 // is not found it means the loader doesn't support adding to the class path
|
|
481 // in the live phase.
|
|
482 {
|
|
483 JavaValue res(T_VOID);
|
|
484 JavaCalls::call_special(&res,
|
|
485 loader,
|
|
486 loader_ik,
|
|
487 vmSymbolHandles::appendToClassPathForInstrumentation_name(),
|
|
488 vmSymbolHandles::appendToClassPathForInstrumentation_signature(),
|
|
489 path,
|
|
490 THREAD);
|
|
491 if (HAS_PENDING_EXCEPTION) {
|
|
492 symbolOop ex_name = PENDING_EXCEPTION->klass()->klass_part()->name();
|
|
493 CLEAR_PENDING_EXCEPTION;
|
|
494
|
|
495 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) {
|
|
496 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED;
|
|
497 } else {
|
|
498 return JVMTI_ERROR_INTERNAL;
|
|
499 }
|
|
500 }
|
|
501 }
|
|
502
|
|
503 return JVMTI_ERROR_NONE;
|
|
504 }
|
|
505 } /* end AddToSystemClassLoaderSearch */
|
|
506
|
|
507 //
|
|
508 // General functions
|
|
509 //
|
|
510
|
|
511 // phase_ptr - pre-checked for NULL
|
|
512 jvmtiError
|
|
513 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) {
|
|
514 *phase_ptr = get_phase();
|
|
515 return JVMTI_ERROR_NONE;
|
|
516 } /* end GetPhase */
|
|
517
|
|
518
|
|
519 jvmtiError
|
|
520 JvmtiEnv::DisposeEnvironment() {
|
|
521 dispose();
|
|
522 return JVMTI_ERROR_NONE;
|
|
523 } /* end DisposeEnvironment */
|
|
524
|
|
525
|
|
526 // data - NULL is a valid value, must be checked
|
|
527 jvmtiError
|
|
528 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) {
|
|
529 set_env_local_storage(data);
|
|
530 return JVMTI_ERROR_NONE;
|
|
531 } /* end SetEnvironmentLocalStorage */
|
|
532
|
|
533
|
|
534 // data_ptr - pre-checked for NULL
|
|
535 jvmtiError
|
|
536 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) {
|
|
537 *data_ptr = (void*)get_env_local_storage();
|
|
538 return JVMTI_ERROR_NONE;
|
|
539 } /* end GetEnvironmentLocalStorage */
|
|
540
|
|
541 // version_ptr - pre-checked for NULL
|
|
542 jvmtiError
|
|
543 JvmtiEnv::GetVersionNumber(jint* version_ptr) {
|
|
544 *version_ptr = JVMTI_VERSION;
|
|
545 return JVMTI_ERROR_NONE;
|
|
546 } /* end GetVersionNumber */
|
|
547
|
|
548
|
|
549 // name_ptr - pre-checked for NULL
|
|
550 jvmtiError
|
|
551 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) {
|
|
552 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) {
|
|
553 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
554 }
|
|
555 const char *name = JvmtiUtil::error_name(error);
|
|
556 if (name == NULL) {
|
|
557 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
558 }
|
|
559 size_t len = strlen(name) + 1;
|
|
560 jvmtiError err = allocate(len, (unsigned char**)name_ptr);
|
|
561 if (err == JVMTI_ERROR_NONE) {
|
|
562 memcpy(*name_ptr, name, len);
|
|
563 }
|
|
564 return err;
|
|
565 } /* end GetErrorName */
|
|
566
|
|
567
|
|
568 jvmtiError
|
|
569 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) {
|
|
570 switch (flag) {
|
|
571 case JVMTI_VERBOSE_OTHER:
|
|
572 // ignore
|
|
573 break;
|
|
574 case JVMTI_VERBOSE_CLASS:
|
|
575 TraceClassLoading = value != 0;
|
|
576 TraceClassUnloading = value != 0;
|
|
577 break;
|
|
578 case JVMTI_VERBOSE_GC:
|
|
579 PrintGC = value != 0;
|
|
580 TraceClassUnloading = value != 0;
|
|
581 break;
|
|
582 case JVMTI_VERBOSE_JNI:
|
|
583 PrintJNIResolving = value != 0;
|
|
584 break;
|
|
585 default:
|
|
586 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
587 };
|
|
588 return JVMTI_ERROR_NONE;
|
|
589 } /* end SetVerboseFlag */
|
|
590
|
|
591
|
|
592 // format_ptr - pre-checked for NULL
|
|
593 jvmtiError
|
|
594 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) {
|
|
595 *format_ptr = JVMTI_JLOCATION_JVMBCI;
|
|
596 return JVMTI_ERROR_NONE;
|
|
597 } /* end GetJLocationFormat */
|
|
598
|
|
599 #ifndef JVMTI_KERNEL
|
|
600
|
|
601 //
|
|
602 // Thread functions
|
|
603 //
|
|
604
|
|
605 // Threads_lock NOT held
|
|
606 // thread - NOT pre-checked
|
|
607 // thread_state_ptr - pre-checked for NULL
|
|
608 jvmtiError
|
|
609 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) {
|
|
610 jint state;
|
|
611 oop thread_oop;
|
|
612 JavaThread* thr;
|
|
613
|
|
614 if (thread == NULL) {
|
|
615 thread_oop = JavaThread::current()->threadObj();
|
|
616 } else {
|
|
617 thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
618 }
|
|
619
|
|
620 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) {
|
|
621 return JVMTI_ERROR_INVALID_THREAD;
|
|
622 }
|
|
623
|
|
624 // get most state bits
|
|
625 state = (jint)java_lang_Thread::get_thread_status(thread_oop);
|
|
626
|
|
627 // add more state bits
|
|
628 thr = java_lang_Thread::thread(thread_oop);
|
|
629 if (thr != NULL) {
|
|
630 JavaThreadState jts = thr->thread_state();
|
|
631
|
|
632 if (thr->is_being_ext_suspended()) {
|
|
633 state |= JVMTI_THREAD_STATE_SUSPENDED;
|
|
634 }
|
|
635 if (jts == _thread_in_native) {
|
|
636 state |= JVMTI_THREAD_STATE_IN_NATIVE;
|
|
637 }
|
|
638 OSThread* osThread = thr->osthread();
|
|
639 if (osThread != NULL && osThread->interrupted()) {
|
|
640 state |= JVMTI_THREAD_STATE_INTERRUPTED;
|
|
641 }
|
|
642 }
|
|
643
|
|
644 *thread_state_ptr = state;
|
|
645 return JVMTI_ERROR_NONE;
|
|
646 } /* end GetThreadState */
|
|
647
|
|
648
|
|
649 // thread_ptr - pre-checked for NULL
|
|
650 jvmtiError
|
|
651 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) {
|
|
652 JavaThread* current_thread = JavaThread::current();
|
|
653 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj());
|
|
654 return JVMTI_ERROR_NONE;
|
|
655 } /* end GetCurrentThread */
|
|
656
|
|
657
|
|
658 // threads_count_ptr - pre-checked for NULL
|
|
659 // threads_ptr - pre-checked for NULL
|
|
660 jvmtiError
|
|
661 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) {
|
|
662 int nthreads = 0;
|
|
663 Handle *thread_objs = NULL;
|
|
664 ResourceMark rm;
|
|
665 HandleMark hm;
|
|
666
|
|
667 // enumerate threads (including agent threads)
|
|
668 ThreadsListEnumerator tle(Thread::current(), true);
|
|
669 nthreads = tle.num_threads();
|
|
670 *threads_count_ptr = nthreads;
|
|
671
|
|
672 if (nthreads == 0) {
|
|
673 *threads_ptr = NULL;
|
|
674 return JVMTI_ERROR_NONE;
|
|
675 }
|
|
676
|
|
677 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads);
|
|
678 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
679
|
|
680 for (int i=0; i < nthreads; i++) {
|
|
681 thread_objs[i] = Handle(tle.get_threadObj(i));
|
|
682 }
|
|
683
|
|
684 // have to make global handles outside of Threads_lock
|
|
685 jthread *jthreads = new_jthreadArray(nthreads, thread_objs);
|
|
686 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
687
|
|
688 *threads_ptr = jthreads;
|
|
689 return JVMTI_ERROR_NONE;
|
|
690 } /* end GetAllThreads */
|
|
691
|
|
692
|
|
693 // Threads_lock NOT held, java_thread not protected by lock
|
|
694 // java_thread - pre-checked
|
|
695 jvmtiError
|
|
696 JvmtiEnv::SuspendThread(JavaThread* java_thread) {
|
|
697 // don't allow hidden thread suspend request.
|
|
698 if (java_thread->is_hidden_from_external_view()) {
|
|
699 return (JVMTI_ERROR_NONE);
|
|
700 }
|
|
701
|
|
702 {
|
|
703 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
|
|
704 if (java_thread->is_external_suspend()) {
|
|
705 // don't allow nested external suspend requests.
|
|
706 return (JVMTI_ERROR_THREAD_SUSPENDED);
|
|
707 }
|
|
708 if (java_thread->is_exiting()) { // thread is in the process of exiting
|
|
709 return (JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
710 }
|
|
711 java_thread->set_external_suspend();
|
|
712 }
|
|
713
|
|
714 if (!JvmtiSuspendControl::suspend(java_thread)) {
|
|
715 // the thread was in the process of exiting
|
|
716 return (JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
717 }
|
|
718 return JVMTI_ERROR_NONE;
|
|
719 } /* end SuspendThread */
|
|
720
|
|
721
|
|
722 // request_count - pre-checked to be greater than or equal to 0
|
|
723 // request_list - pre-checked for NULL
|
|
724 // results - pre-checked for NULL
|
|
725 jvmtiError
|
|
726 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
|
|
727 int needSafepoint = 0; // > 0 if we need a safepoint
|
|
728 for (int i = 0; i < request_count; i++) {
|
|
729 JavaThread *java_thread = get_JavaThread(request_list[i]);
|
|
730 if (java_thread == NULL) {
|
|
731 results[i] = JVMTI_ERROR_INVALID_THREAD;
|
|
732 continue;
|
|
733 }
|
|
734 // the thread has not yet run or has exited (not on threads list)
|
|
735 if (java_thread->threadObj() == NULL) {
|
|
736 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
737 continue;
|
|
738 }
|
|
739 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) {
|
|
740 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
741 continue;
|
|
742 }
|
|
743 // don't allow hidden thread suspend request.
|
|
744 if (java_thread->is_hidden_from_external_view()) {
|
|
745 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
746 continue;
|
|
747 }
|
|
748
|
|
749 {
|
|
750 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
|
|
751 if (java_thread->is_external_suspend()) {
|
|
752 // don't allow nested external suspend requests.
|
|
753 results[i] = JVMTI_ERROR_THREAD_SUSPENDED;
|
|
754 continue;
|
|
755 }
|
|
756 if (java_thread->is_exiting()) { // thread is in the process of exiting
|
|
757 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
758 continue;
|
|
759 }
|
|
760 java_thread->set_external_suspend();
|
|
761 }
|
|
762 if (java_thread->thread_state() == _thread_in_native) {
|
|
763 // We need to try and suspend native threads here. Threads in
|
|
764 // other states will self-suspend on their next transition.
|
|
765 if (!JvmtiSuspendControl::suspend(java_thread)) {
|
|
766 // The thread was in the process of exiting. Force another
|
|
767 // safepoint to make sure that this thread transitions.
|
|
768 needSafepoint++;
|
|
769 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
770 continue;
|
|
771 }
|
|
772 } else {
|
|
773 needSafepoint++;
|
|
774 }
|
|
775 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
776 }
|
|
777 if (needSafepoint > 0) {
|
|
778 VM_ForceSafepoint vfs;
|
|
779 VMThread::execute(&vfs);
|
|
780 }
|
|
781 // per-thread suspend results returned via results parameter
|
|
782 return JVMTI_ERROR_NONE;
|
|
783 } /* end SuspendThreadList */
|
|
784
|
|
785
|
|
786 // Threads_lock NOT held, java_thread not protected by lock
|
|
787 // java_thread - pre-checked
|
|
788 jvmtiError
|
|
789 JvmtiEnv::ResumeThread(JavaThread* java_thread) {
|
|
790 // don't allow hidden thread resume request.
|
|
791 if (java_thread->is_hidden_from_external_view()) {
|
|
792 return JVMTI_ERROR_NONE;
|
|
793 }
|
|
794
|
|
795 if (!java_thread->is_being_ext_suspended()) {
|
|
796 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
797 }
|
|
798
|
|
799 if (!JvmtiSuspendControl::resume(java_thread)) {
|
|
800 return JVMTI_ERROR_INTERNAL;
|
|
801 }
|
|
802 return JVMTI_ERROR_NONE;
|
|
803 } /* end ResumeThread */
|
|
804
|
|
805
|
|
806 // request_count - pre-checked to be greater than or equal to 0
|
|
807 // request_list - pre-checked for NULL
|
|
808 // results - pre-checked for NULL
|
|
809 jvmtiError
|
|
810 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
|
|
811 for (int i = 0; i < request_count; i++) {
|
|
812 JavaThread *java_thread = get_JavaThread(request_list[i]);
|
|
813 if (java_thread == NULL) {
|
|
814 results[i] = JVMTI_ERROR_INVALID_THREAD;
|
|
815 continue;
|
|
816 }
|
|
817 // don't allow hidden thread resume request.
|
|
818 if (java_thread->is_hidden_from_external_view()) {
|
|
819 results[i] = JVMTI_ERROR_NONE; // indicate successful resume
|
|
820 continue;
|
|
821 }
|
|
822 if (!java_thread->is_being_ext_suspended()) {
|
|
823 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
824 continue;
|
|
825 }
|
|
826
|
|
827 if (!JvmtiSuspendControl::resume(java_thread)) {
|
|
828 results[i] = JVMTI_ERROR_INTERNAL;
|
|
829 continue;
|
|
830 }
|
|
831
|
|
832 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
833 }
|
|
834 // per-thread resume results returned via results parameter
|
|
835 return JVMTI_ERROR_NONE;
|
|
836 } /* end ResumeThreadList */
|
|
837
|
|
838
|
|
839 // Threads_lock NOT held, java_thread not protected by lock
|
|
840 // java_thread - pre-checked
|
|
841 jvmtiError
|
|
842 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) {
|
|
843 oop e = JNIHandles::resolve_external_guard(exception);
|
|
844 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER);
|
|
845
|
|
846 JavaThread::send_async_exception(java_thread->threadObj(), e);
|
|
847
|
|
848 return JVMTI_ERROR_NONE;
|
|
849
|
|
850 } /* end StopThread */
|
|
851
|
|
852
|
|
853 // Threads_lock NOT held
|
|
854 // thread - NOT pre-checked
|
|
855 jvmtiError
|
|
856 JvmtiEnv::InterruptThread(jthread thread) {
|
|
857 oop thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
858 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass()))
|
|
859 return JVMTI_ERROR_INVALID_THREAD;
|
|
860
|
|
861 JavaThread* current_thread = JavaThread::current();
|
|
862
|
|
863 // Todo: this is a duplicate of JVM_Interrupt; share code in future
|
|
864 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
865 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock);
|
|
866 // We need to re-resolve the java_thread, since a GC might have happened during the
|
|
867 // acquire of the lock
|
|
868
|
|
869 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread));
|
|
870 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
871
|
|
872 Thread::interrupt(java_thread);
|
|
873
|
|
874 return JVMTI_ERROR_NONE;
|
|
875 } /* end InterruptThread */
|
|
876
|
|
877
|
|
878 // Threads_lock NOT held
|
|
879 // thread - NOT pre-checked
|
|
880 // info_ptr - pre-checked for NULL
|
|
881 jvmtiError
|
|
882 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) {
|
|
883 ResourceMark rm;
|
|
884 HandleMark hm;
|
|
885
|
|
886 JavaThread* current_thread = JavaThread::current();
|
|
887
|
|
888 // if thread is NULL the current thread is used
|
|
889 oop thread_oop;
|
|
890 if (thread == NULL) {
|
|
891 thread_oop = current_thread->threadObj();
|
|
892 } else {
|
|
893 thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
894 }
|
|
895 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass()))
|
|
896 return JVMTI_ERROR_INVALID_THREAD;
|
|
897
|
|
898 Handle thread_obj(current_thread, thread_oop);
|
|
899 typeArrayHandle name;
|
|
900 ThreadPriority priority;
|
|
901 Handle thread_group;
|
|
902 Handle context_class_loader;
|
|
903 bool is_daemon;
|
|
904
|
|
905 { MutexLocker mu(Threads_lock);
|
|
906
|
|
907 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj()));
|
|
908 priority = java_lang_Thread::priority(thread_obj());
|
|
909 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj()));
|
|
910 is_daemon = java_lang_Thread::is_daemon(thread_obj());
|
|
911
|
|
912 oop loader = java_lang_Thread::context_class_loader(thread_obj());
|
|
913 context_class_loader = Handle(current_thread, loader);
|
|
914 }
|
|
915 { const char *n;
|
|
916
|
|
917 if (name() != NULL) {
|
|
918 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
|
|
919 } else {
|
|
920 n = UNICODE::as_utf8(NULL, 0);
|
|
921 }
|
|
922
|
|
923 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1);
|
|
924 if (info_ptr->name == NULL)
|
|
925 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
926
|
|
927 strcpy(info_ptr->name, n);
|
|
928 }
|
|
929 info_ptr->is_daemon = is_daemon;
|
|
930 info_ptr->priority = priority;
|
|
931
|
|
932 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL :
|
|
933 jni_reference(context_class_loader);
|
|
934 info_ptr->thread_group = jni_reference(thread_group);
|
|
935
|
|
936 return JVMTI_ERROR_NONE;
|
|
937 } /* end GetThreadInfo */
|
|
938
|
|
939
|
|
940 // Threads_lock NOT held, java_thread not protected by lock
|
|
941 // java_thread - pre-checked
|
|
942 // owned_monitor_count_ptr - pre-checked for NULL
|
|
943 // owned_monitors_ptr - pre-checked for NULL
|
|
944 jvmtiError
|
|
945 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) {
|
|
946 jvmtiError err = JVMTI_ERROR_NONE;
|
|
947 JavaThread* calling_thread = JavaThread::current();
|
|
948
|
|
949 // growable array of jvmti monitors info on the C-heap
|
|
950 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
|
|
951 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
|
|
952
|
|
953 uint32_t debug_bits = 0;
|
|
954 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
955 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
|
|
956 } else {
|
|
957 // JVMTI get monitors info at safepoint. Do not require target thread to
|
|
958 // be suspended.
|
|
959 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
|
|
960 VMThread::execute(&op);
|
|
961 err = op.result();
|
|
962 }
|
|
963 jint owned_monitor_count = owned_monitors_list->length();
|
|
964 if (err == JVMTI_ERROR_NONE) {
|
|
965 if ((err = allocate(owned_monitor_count * sizeof(jobject *),
|
|
966 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) {
|
|
967 // copy into the returned array
|
|
968 for (int i = 0; i < owned_monitor_count; i++) {
|
|
969 (*owned_monitors_ptr)[i] =
|
|
970 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
|
|
971 }
|
|
972 *owned_monitor_count_ptr = owned_monitor_count;
|
|
973 }
|
|
974 }
|
|
975 // clean up.
|
|
976 for (int i = 0; i < owned_monitor_count; i++) {
|
|
977 deallocate((unsigned char*)owned_monitors_list->at(i));
|
|
978 }
|
|
979 delete owned_monitors_list;
|
|
980
|
|
981 return err;
|
|
982 } /* end GetOwnedMonitorInfo */
|
|
983
|
|
984
|
|
985 // Threads_lock NOT held, java_thread not protected by lock
|
|
986 // java_thread - pre-checked
|
|
987 // monitor_info_count_ptr - pre-checked for NULL
|
|
988 // monitor_info_ptr - pre-checked for NULL
|
|
989 jvmtiError
|
|
990 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) {
|
|
991 jvmtiError err = JVMTI_ERROR_NONE;
|
|
992 JavaThread* calling_thread = JavaThread::current();
|
|
993
|
|
994 // growable array of jvmti monitors info on the C-heap
|
|
995 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
|
|
996 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
|
|
997
|
|
998 uint32_t debug_bits = 0;
|
|
999 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1000 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
|
|
1001 } else {
|
|
1002 // JVMTI get owned monitors info at safepoint. Do not require target thread to
|
|
1003 // be suspended.
|
|
1004 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
|
|
1005 VMThread::execute(&op);
|
|
1006 err = op.result();
|
|
1007 }
|
|
1008
|
|
1009 jint owned_monitor_count = owned_monitors_list->length();
|
|
1010 if (err == JVMTI_ERROR_NONE) {
|
|
1011 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo),
|
|
1012 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) {
|
|
1013 // copy to output array.
|
|
1014 for (int i = 0; i < owned_monitor_count; i++) {
|
|
1015 (*monitor_info_ptr)[i].monitor =
|
|
1016 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
|
|
1017 (*monitor_info_ptr)[i].stack_depth =
|
|
1018 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth;
|
|
1019 }
|
|
1020 }
|
|
1021 *monitor_info_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 GetOwnedMonitorStackDepthInfo */
|
|
1032
|
|
1033
|
|
1034 // Threads_lock NOT held, java_thread not protected by lock
|
|
1035 // java_thread - pre-checked
|
|
1036 // monitor_ptr - pre-checked for NULL
|
|
1037 jvmtiError
|
|
1038 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) {
|
|
1039 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1040 uint32_t debug_bits = 0;
|
|
1041 JavaThread* calling_thread = JavaThread::current();
|
|
1042 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1043 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr);
|
|
1044 } else {
|
|
1045 // get contended monitor information at safepoint.
|
|
1046 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr);
|
|
1047 VMThread::execute(&op);
|
|
1048 err = op.result();
|
|
1049 }
|
|
1050 return err;
|
|
1051 } /* end GetCurrentContendedMonitor */
|
|
1052
|
|
1053
|
|
1054 // Threads_lock NOT held
|
|
1055 // thread - NOT pre-checked
|
|
1056 // proc - pre-checked for NULL
|
|
1057 // arg - NULL is a valid value, must be checked
|
|
1058 jvmtiError
|
|
1059 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) {
|
|
1060 oop thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
1061 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) {
|
|
1062 return JVMTI_ERROR_INVALID_THREAD;
|
|
1063 }
|
|
1064 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) {
|
|
1065 return JVMTI_ERROR_INVALID_PRIORITY;
|
|
1066 }
|
|
1067
|
|
1068 //Thread-self
|
|
1069 JavaThread* current_thread = JavaThread::current();
|
|
1070
|
|
1071 Handle thread_hndl(current_thread, thread_oop);
|
|
1072 {
|
|
1073 MutexLocker mu(Threads_lock); // grab Threads_lock
|
|
1074
|
|
1075 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg);
|
|
1076
|
|
1077 // At this point it may be possible that no osthread was created for the
|
|
1078 // JavaThread due to lack of memory.
|
|
1079 if (new_thread == NULL || new_thread->osthread() == NULL) {
|
|
1080 if (new_thread) delete new_thread;
|
|
1081 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
1082 }
|
|
1083
|
|
1084 java_lang_Thread::set_thread(thread_hndl(), new_thread);
|
|
1085 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority);
|
|
1086 java_lang_Thread::set_daemon(thread_hndl());
|
|
1087
|
|
1088 new_thread->set_threadObj(thread_hndl());
|
|
1089 Threads::add(new_thread);
|
|
1090 Thread::start(new_thread);
|
|
1091 } // unlock Threads_lock
|
|
1092
|
|
1093 return JVMTI_ERROR_NONE;
|
|
1094 } /* end RunAgentThread */
|
|
1095
|
|
1096 //
|
|
1097 // Thread Group functions
|
|
1098 //
|
|
1099
|
|
1100 // group_count_ptr - pre-checked for NULL
|
|
1101 // groups_ptr - pre-checked for NULL
|
|
1102 jvmtiError
|
|
1103 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) {
|
|
1104 JavaThread* current_thread = JavaThread::current();
|
|
1105
|
|
1106 // Only one top level thread group now.
|
|
1107 *group_count_ptr = 1;
|
|
1108
|
|
1109 // Allocate memory to store global-refs to the thread groups.
|
|
1110 // Assume this area is freed by caller.
|
|
1111 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr));
|
|
1112
|
|
1113 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
1114
|
|
1115 // Convert oop to Handle, then convert Handle to global-ref.
|
|
1116 {
|
|
1117 HandleMark hm(current_thread);
|
|
1118 Handle system_thread_group(current_thread, Universe::system_thread_group());
|
|
1119 *groups_ptr[0] = jni_reference(system_thread_group);
|
|
1120 }
|
|
1121
|
|
1122 return JVMTI_ERROR_NONE;
|
|
1123 } /* end GetTopThreadGroups */
|
|
1124
|
|
1125
|
|
1126 // info_ptr - pre-checked for NULL
|
|
1127 jvmtiError
|
|
1128 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) {
|
|
1129 ResourceMark rm;
|
|
1130 HandleMark hm;
|
|
1131
|
|
1132 JavaThread* current_thread = JavaThread::current();
|
|
1133
|
|
1134 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group));
|
|
1135 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP);
|
|
1136
|
|
1137 typeArrayHandle name;
|
|
1138 Handle parent_group;
|
|
1139 bool is_daemon;
|
|
1140 ThreadPriority max_priority;
|
|
1141
|
|
1142 { MutexLocker mu(Threads_lock);
|
|
1143
|
|
1144 name = typeArrayHandle(current_thread,
|
|
1145 java_lang_ThreadGroup::name(group_obj()));
|
|
1146 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj()));
|
|
1147 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj());
|
|
1148 max_priority = java_lang_ThreadGroup::maxPriority(group_obj());
|
|
1149 }
|
|
1150
|
|
1151 info_ptr->is_daemon = is_daemon;
|
|
1152 info_ptr->max_priority = max_priority;
|
|
1153 info_ptr->parent = jni_reference(parent_group);
|
|
1154
|
|
1155 if (name() != NULL) {
|
|
1156 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
|
|
1157 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1);
|
|
1158 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
1159 strcpy(info_ptr->name, n);
|
|
1160 } else {
|
|
1161 info_ptr->name = NULL;
|
|
1162 }
|
|
1163
|
|
1164 return JVMTI_ERROR_NONE;
|
|
1165 } /* end GetThreadGroupInfo */
|
|
1166
|
|
1167
|
|
1168 // thread_count_ptr - pre-checked for NULL
|
|
1169 // threads_ptr - pre-checked for NULL
|
|
1170 // group_count_ptr - pre-checked for NULL
|
|
1171 // groups_ptr - pre-checked for NULL
|
|
1172 jvmtiError
|
|
1173 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) {
|
|
1174 JavaThread* current_thread = JavaThread::current();
|
|
1175 oop group_obj = (oop) JNIHandles::resolve_external_guard(group);
|
|
1176 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP);
|
|
1177
|
|
1178 Handle *thread_objs = NULL;
|
|
1179 Handle *group_objs = NULL;
|
|
1180 int nthreads = 0;
|
|
1181 int ngroups = 0;
|
|
1182 int hidden_threads = 0;
|
|
1183
|
|
1184 ResourceMark rm;
|
|
1185 HandleMark hm;
|
|
1186
|
|
1187 Handle group_hdl(current_thread, group_obj);
|
|
1188
|
|
1189 { MutexLocker mu(Threads_lock);
|
|
1190
|
|
1191 nthreads = java_lang_ThreadGroup::nthreads(group_hdl());
|
|
1192 ngroups = java_lang_ThreadGroup::ngroups(group_hdl());
|
|
1193
|
|
1194 if (nthreads > 0) {
|
|
1195 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl());
|
|
1196 assert(nthreads <= threads->length(), "too many threads");
|
|
1197 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads);
|
|
1198 for (int i=0, j=0; i<nthreads; i++) {
|
|
1199 oop thread_obj = threads->obj_at(i);
|
|
1200 assert(thread_obj != NULL, "thread_obj is NULL");
|
|
1201 JavaThread *javathread = java_lang_Thread::thread(thread_obj);
|
|
1202 // Filter out hidden java threads.
|
|
1203 if (javathread != NULL && javathread->is_hidden_from_external_view()) {
|
|
1204 hidden_threads++;
|
|
1205 continue;
|
|
1206 }
|
|
1207 thread_objs[j++] = Handle(current_thread, thread_obj);
|
|
1208 }
|
|
1209 nthreads -= hidden_threads;
|
|
1210 }
|
|
1211 if (ngroups > 0) {
|
|
1212 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl());
|
|
1213 assert(ngroups <= groups->length(), "too many threads");
|
|
1214 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups);
|
|
1215 for (int i=0; i<ngroups; i++) {
|
|
1216 oop group_obj = groups->obj_at(i);
|
|
1217 assert(group_obj != NULL, "group_obj != NULL");
|
|
1218 group_objs[i] = Handle(current_thread, group_obj);
|
|
1219 }
|
|
1220 }
|
|
1221 }
|
|
1222
|
|
1223 // have to make global handles outside of Threads_lock
|
|
1224 *group_count_ptr = ngroups;
|
|
1225 *thread_count_ptr = nthreads;
|
|
1226 *threads_ptr = new_jthreadArray(nthreads, thread_objs);
|
|
1227 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs);
|
|
1228 if ((nthreads > 0) && (*threads_ptr == NULL)) {
|
|
1229 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
1230 }
|
|
1231 if ((ngroups > 0) && (*groups_ptr == NULL)) {
|
|
1232 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
1233 }
|
|
1234
|
|
1235 return JVMTI_ERROR_NONE;
|
|
1236 } /* end GetThreadGroupChildren */
|
|
1237
|
|
1238
|
|
1239 //
|
|
1240 // Stack Frame functions
|
|
1241 //
|
|
1242
|
|
1243 // Threads_lock NOT held, java_thread not protected by lock
|
|
1244 // java_thread - pre-checked
|
|
1245 // max_frame_count - pre-checked to be greater than or equal to 0
|
|
1246 // frame_buffer - pre-checked for NULL
|
|
1247 // count_ptr - pre-checked for NULL
|
|
1248 jvmtiError
|
|
1249 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) {
|
|
1250 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1251 uint32_t debug_bits = 0;
|
|
1252 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1253 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
|
|
1254 } else {
|
|
1255 // JVMTI get stack trace at safepoint. Do not require target thread to
|
|
1256 // be suspended.
|
|
1257 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
|
|
1258 VMThread::execute(&op);
|
|
1259 err = op.result();
|
|
1260 }
|
|
1261
|
|
1262 return err;
|
|
1263 } /* end GetStackTrace */
|
|
1264
|
|
1265
|
|
1266 // max_frame_count - pre-checked to be greater than or equal to 0
|
|
1267 // stack_info_ptr - pre-checked for NULL
|
|
1268 // thread_count_ptr - pre-checked for NULL
|
|
1269 jvmtiError
|
|
1270 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) {
|
|
1271 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1272 JavaThread* calling_thread = JavaThread::current();
|
|
1273
|
|
1274 // JVMTI get stack traces at safepoint.
|
|
1275 VM_GetAllStackTraces op(this, calling_thread, max_frame_count);
|
|
1276 VMThread::execute(&op);
|
|
1277 *thread_count_ptr = op.final_thread_count();
|
|
1278 *stack_info_ptr = op.stack_info();
|
|
1279 err = op.result();
|
|
1280 return err;
|
|
1281 } /* end GetAllStackTraces */
|
|
1282
|
|
1283
|
|
1284 // thread_count - pre-checked to be greater than or equal to 0
|
|
1285 // thread_list - pre-checked for NULL
|
|
1286 // max_frame_count - pre-checked to be greater than or equal to 0
|
|
1287 // stack_info_ptr - pre-checked for NULL
|
|
1288 jvmtiError
|
|
1289 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) {
|
|
1290 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1291 // JVMTI get stack traces at safepoint.
|
|
1292 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count);
|
|
1293 VMThread::execute(&op);
|
|
1294 err = op.result();
|
|
1295 if (err == JVMTI_ERROR_NONE) {
|
|
1296 *stack_info_ptr = op.stack_info();
|
|
1297 }
|
|
1298 return err;
|
|
1299 } /* end GetThreadListStackTraces */
|
|
1300
|
|
1301
|
|
1302 // Threads_lock NOT held, java_thread not protected by lock
|
|
1303 // java_thread - pre-checked
|
|
1304 // count_ptr - pre-checked for NULL
|
|
1305 jvmtiError
|
|
1306 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) {
|
|
1307 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1308
|
|
1309 // retrieve or create JvmtiThreadState.
|
|
1310 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
|
|
1311 uint32_t debug_bits = 0;
|
|
1312 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1313 err = get_frame_count(state, count_ptr);
|
|
1314 } else {
|
|
1315 // get java stack frame count at safepoint.
|
|
1316 VM_GetFrameCount op(this, state, count_ptr);
|
|
1317 VMThread::execute(&op);
|
|
1318 err = op.result();
|
|
1319 }
|
|
1320 return err;
|
|
1321 } /* end GetFrameCount */
|
|
1322
|
|
1323
|
|
1324 // Threads_lock NOT held, java_thread not protected by lock
|
|
1325 // java_thread - pre-checked
|
|
1326 jvmtiError
|
|
1327 JvmtiEnv::PopFrame(JavaThread* java_thread) {
|
|
1328 JavaThread* current_thread = JavaThread::current();
|
|
1329 HandleMark hm(current_thread);
|
|
1330 uint32_t debug_bits = 0;
|
|
1331
|
|
1332 // Check if java_thread is fully suspended
|
|
1333 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) {
|
|
1334 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
1335 }
|
|
1336 // Check to see if a PopFrame was already in progress
|
|
1337 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) {
|
|
1338 // Probably possible for JVMTI clients to trigger this, but the
|
|
1339 // JPDA backend shouldn't allow this to happen
|
|
1340 return JVMTI_ERROR_INTERNAL;
|
|
1341 }
|
|
1342
|
|
1343 {
|
|
1344 // Was workaround bug
|
|
1345 // 4812902: popFrame hangs if the method is waiting at a synchronize
|
|
1346 // Catch this condition and return an error to avoid hanging.
|
|
1347 // Now JVMTI spec allows an implementation to bail out with an opaque frame error.
|
|
1348 OSThread* osThread = java_thread->osthread();
|
|
1349 if (osThread->get_state() == MONITOR_WAIT) {
|
|
1350 return JVMTI_ERROR_OPAQUE_FRAME;
|
|
1351 }
|
|
1352 }
|
|
1353
|
|
1354 {
|
|
1355 ResourceMark rm(current_thread);
|
|
1356 // Check if there are more than one Java frame in this thread, that the top two frames
|
|
1357 // are Java (not native) frames, and that there is no intervening VM frame
|
|
1358 int frame_count = 0;
|
|
1359 bool is_interpreted[2];
|
|
1360 intptr_t *frame_sp[2];
|
|
1361 // The 2-nd arg of constructor is needed to stop iterating at java entry frame.
|
|
1362 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) {
|
|
1363 methodHandle mh(current_thread, vfs.method());
|
|
1364 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME);
|
|
1365 is_interpreted[frame_count] = vfs.is_interpreted_frame();
|
|
1366 frame_sp[frame_count] = vfs.frame_id();
|
|
1367 if (++frame_count > 1) break;
|
|
1368 }
|
|
1369 if (frame_count < 2) {
|
|
1370 // We haven't found two adjacent non-native Java frames on the top.
|
|
1371 // There can be two situations here:
|
|
1372 // 1. There are no more java frames
|
|
1373 // 2. Two top java frames are separated by non-java native frames
|
|
1374 if(vframeFor(java_thread, 1) == NULL) {
|
|
1375 return JVMTI_ERROR_NO_MORE_FRAMES;
|
|
1376 } else {
|
|
1377 // Intervening non-java native or VM frames separate java frames.
|
|
1378 // Current implementation does not support this. See bug #5031735.
|
|
1379 // In theory it is possible to pop frames in such cases.
|
|
1380 return JVMTI_ERROR_OPAQUE_FRAME;
|
|
1381 }
|
|
1382 }
|
|
1383
|
|
1384 // If any of the top 2 frames is a compiled one, need to deoptimize it
|
|
1385 for (int i = 0; i < 2; i++) {
|
|
1386 if (!is_interpreted[i]) {
|
|
1387 VM_DeoptimizeFrame op(java_thread, frame_sp[i]);
|
|
1388 VMThread::execute(&op);
|
|
1389 }
|
|
1390 }
|
|
1391
|
|
1392 // Update the thread state to reflect that the top frame is popped
|
|
1393 // so that cur_stack_depth is maintained properly and all frameIDs
|
|
1394 // are invalidated.
|
|
1395 // The current frame will be popped later when the suspended thread
|
|
1396 // is resumed and right before returning from VM to Java.
|
|
1397 // (see call_VM_base() in assembler_<cpu>.cpp).
|
|
1398
|
|
1399 // It's fine to update the thread state here because no JVMTI events
|
|
1400 // shall be posted for this PopFrame.
|
|
1401
|
|
1402 // retreive or create the state
|
|
1403 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
|
|
1404
|
|
1405 state->update_for_pop_top_frame();
|
|
1406 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit);
|
|
1407 // Set pending step flag for this popframe and it is cleared when next
|
|
1408 // step event is posted.
|
|
1409 state->set_pending_step_for_popframe();
|
|
1410 }
|
|
1411
|
|
1412 return JVMTI_ERROR_NONE;
|
|
1413 } /* end PopFrame */
|
|
1414
|
|
1415
|
|
1416 // Threads_lock NOT held, java_thread not protected by lock
|
|
1417 // java_thread - pre-checked
|
|
1418 // java_thread - unchecked
|
|
1419 // depth - pre-checked as non-negative
|
|
1420 // method_ptr - pre-checked for NULL
|
|
1421 // location_ptr - pre-checked for NULL
|
|
1422 jvmtiError
|
|
1423 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) {
|
|
1424 jvmtiError err = JVMTI_ERROR_NONE;
|
|
1425 uint32_t debug_bits = 0;
|
|
1426
|
|
1427 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1428 err = get_frame_location(java_thread, depth, method_ptr, location_ptr);
|
|
1429 } else {
|
|
1430 // JVMTI get java stack frame location at safepoint.
|
|
1431 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr);
|
|
1432 VMThread::execute(&op);
|
|
1433 err = op.result();
|
|
1434 }
|
|
1435 return err;
|
|
1436 } /* end GetFrameLocation */
|
|
1437
|
|
1438
|
|
1439 // Threads_lock NOT held, java_thread not protected by lock
|
|
1440 // java_thread - pre-checked
|
|
1441 // java_thread - unchecked
|
|
1442 // depth - pre-checked as non-negative
|
|
1443 jvmtiError
|
|
1444 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) {
|
|
1445 ResourceMark rm;
|
|
1446 uint32_t debug_bits = 0;
|
|
1447
|
|
1448 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
1449 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
1450 }
|
|
1451
|
|
1452 if (TraceJVMTICalls) {
|
|
1453 JvmtiSuspendControl::print();
|
|
1454 }
|
|
1455
|
|
1456 vframe *vf = vframeFor(java_thread, depth);
|
|
1457 if (vf == NULL) {
|
|
1458 return JVMTI_ERROR_NO_MORE_FRAMES;
|
|
1459 }
|
|
1460
|
|
1461 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) {
|
|
1462 return JVMTI_ERROR_OPAQUE_FRAME;
|
|
1463 }
|
|
1464
|
|
1465 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL");
|
|
1466
|
|
1467 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread);
|
|
1468 int frame_number = state->count_frames() - depth;
|
|
1469 state->env_thread_state(this)->set_frame_pop(frame_number);
|
|
1470
|
|
1471 return JVMTI_ERROR_NONE;
|
|
1472 } /* end NotifyFramePop */
|
|
1473
|
|
1474
|
|
1475 //
|
|
1476 // Force Early Return functions
|
|
1477 //
|
|
1478
|
|
1479 // Threads_lock NOT held, java_thread not protected by lock
|
|
1480 // java_thread - pre-checked
|
|
1481 jvmtiError
|
|
1482 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) {
|
|
1483 jvalue val;
|
|
1484 val.l = value;
|
|
1485 return force_early_return(java_thread, val, atos);
|
|
1486 } /* end ForceEarlyReturnObject */
|
|
1487
|
|
1488
|
|
1489 // Threads_lock NOT held, java_thread not protected by lock
|
|
1490 // java_thread - pre-checked
|
|
1491 jvmtiError
|
|
1492 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) {
|
|
1493 jvalue val;
|
|
1494 val.i = value;
|
|
1495 return force_early_return(java_thread, val, itos);
|
|
1496 } /* end ForceEarlyReturnInt */
|
|
1497
|
|
1498
|
|
1499 // Threads_lock NOT held, java_thread not protected by lock
|
|
1500 // java_thread - pre-checked
|
|
1501 jvmtiError
|
|
1502 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) {
|
|
1503 jvalue val;
|
|
1504 val.j = value;
|
|
1505 return force_early_return(java_thread, val, ltos);
|
|
1506 } /* end ForceEarlyReturnLong */
|
|
1507
|
|
1508
|
|
1509 // Threads_lock NOT held, java_thread not protected by lock
|
|
1510 // java_thread - pre-checked
|
|
1511 jvmtiError
|
|
1512 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) {
|
|
1513 jvalue val;
|
|
1514 val.f = value;
|
|
1515 return force_early_return(java_thread, val, ftos);
|
|
1516 } /* end ForceEarlyReturnFloat */
|
|
1517
|
|
1518
|
|
1519 // Threads_lock NOT held, java_thread not protected by lock
|
|
1520 // java_thread - pre-checked
|
|
1521 jvmtiError
|
|
1522 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) {
|
|
1523 jvalue val;
|
|
1524 val.d = value;
|
|
1525 return force_early_return(java_thread, val, dtos);
|
|
1526 } /* end ForceEarlyReturnDouble */
|
|
1527
|
|
1528
|
|
1529 // Threads_lock NOT held, java_thread not protected by lock
|
|
1530 // java_thread - pre-checked
|
|
1531 jvmtiError
|
|
1532 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) {
|
|
1533 jvalue val;
|
|
1534 val.j = 0L;
|
|
1535 return force_early_return(java_thread, val, vtos);
|
|
1536 } /* end ForceEarlyReturnVoid */
|
|
1537
|
|
1538
|
|
1539 //
|
|
1540 // Heap functions
|
|
1541 //
|
|
1542
|
|
1543 // klass - NULL is a valid value, must be checked
|
|
1544 // initial_object - NULL is a valid value, must be checked
|
|
1545 // callbacks - pre-checked for NULL
|
|
1546 // user_data - NULL is a valid value, must be checked
|
|
1547 jvmtiError
|
|
1548 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
|
|
1549 // check klass if provided
|
|
1550 klassOop k_oop = NULL;
|
|
1551 if (klass != NULL) {
|
|
1552 oop k_mirror = JNIHandles::resolve_external_guard(klass);
|
|
1553 if (k_mirror == NULL) {
|
|
1554 return JVMTI_ERROR_INVALID_CLASS;
|
|
1555 }
|
|
1556 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
1557 return JVMTI_ERROR_NONE;
|
|
1558 }
|
|
1559 k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
1560 if (k_oop == NULL) {
|
|
1561 return JVMTI_ERROR_INVALID_CLASS;
|
|
1562 }
|
|
1563 }
|
|
1564
|
|
1565 Thread *thread = Thread::current();
|
|
1566 HandleMark hm(thread);
|
|
1567 KlassHandle kh (thread, k_oop);
|
|
1568
|
|
1569 TraceTime t("FollowReferences", TraceJVMTIObjectTagging);
|
|
1570 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data);
|
|
1571 return JVMTI_ERROR_NONE;
|
|
1572 } /* end FollowReferences */
|
|
1573
|
|
1574
|
|
1575 // klass - NULL is a valid value, must be checked
|
|
1576 // callbacks - pre-checked for NULL
|
|
1577 // user_data - NULL is a valid value, must be checked
|
|
1578 jvmtiError
|
|
1579 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
|
|
1580 // check klass if provided
|
|
1581 klassOop k_oop = NULL;
|
|
1582 if (klass != NULL) {
|
|
1583 oop k_mirror = JNIHandles::resolve_external_guard(klass);
|
|
1584 if (k_mirror == NULL) {
|
|
1585 return JVMTI_ERROR_INVALID_CLASS;
|
|
1586 }
|
|
1587 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
1588 return JVMTI_ERROR_NONE;
|
|
1589 }
|
|
1590 k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
1591 if (k_oop == NULL) {
|
|
1592 return JVMTI_ERROR_INVALID_CLASS;
|
|
1593 }
|
|
1594 }
|
|
1595
|
|
1596 Thread *thread = Thread::current();
|
|
1597 HandleMark hm(thread);
|
|
1598 KlassHandle kh (thread, k_oop);
|
|
1599
|
|
1600 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging);
|
|
1601 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data);
|
|
1602 return JVMTI_ERROR_NONE;
|
|
1603 } /* end IterateThroughHeap */
|
|
1604
|
|
1605
|
|
1606 // tag_ptr - pre-checked for NULL
|
|
1607 jvmtiError
|
|
1608 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) {
|
|
1609 oop o = JNIHandles::resolve_external_guard(object);
|
|
1610 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
1611 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object);
|
|
1612 return JVMTI_ERROR_NONE;
|
|
1613 } /* end GetTag */
|
|
1614
|
|
1615
|
|
1616 jvmtiError
|
|
1617 JvmtiEnv::SetTag(jobject object, jlong tag) {
|
|
1618 oop o = JNIHandles::resolve_external_guard(object);
|
|
1619 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
1620 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag);
|
|
1621 return JVMTI_ERROR_NONE;
|
|
1622 } /* end SetTag */
|
|
1623
|
|
1624
|
|
1625 // tag_count - pre-checked to be greater than or equal to 0
|
|
1626 // tags - pre-checked for NULL
|
|
1627 // count_ptr - pre-checked for NULL
|
|
1628 // object_result_ptr - NULL is a valid value, must be checked
|
|
1629 // tag_result_ptr - NULL is a valid value, must be checked
|
|
1630 jvmtiError
|
|
1631 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) {
|
|
1632 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging);
|
|
1633 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr);
|
|
1634 } /* end GetObjectsWithTags */
|
|
1635
|
|
1636
|
|
1637 jvmtiError
|
|
1638 JvmtiEnv::ForceGarbageCollection() {
|
|
1639 Universe::heap()->collect(GCCause::_jvmti_force_gc);
|
|
1640 return JVMTI_ERROR_NONE;
|
|
1641 } /* end ForceGarbageCollection */
|
|
1642
|
|
1643
|
|
1644 //
|
|
1645 // Heap (1.0) functions
|
|
1646 //
|
|
1647
|
|
1648 // object_reference_callback - pre-checked for NULL
|
|
1649 // user_data - NULL is a valid value, must be checked
|
|
1650 jvmtiError
|
|
1651 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) {
|
|
1652 oop o = JNIHandles::resolve_external_guard(object);
|
|
1653 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
1654 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data);
|
|
1655 return JVMTI_ERROR_NONE;
|
|
1656 } /* end IterateOverObjectsReachableFromObject */
|
|
1657
|
|
1658
|
|
1659 // heap_root_callback - NULL is a valid value, must be checked
|
|
1660 // stack_ref_callback - NULL is a valid value, must be checked
|
|
1661 // object_ref_callback - NULL is a valid value, must be checked
|
|
1662 // user_data - NULL is a valid value, must be checked
|
|
1663 jvmtiError
|
|
1664 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) {
|
|
1665 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging);
|
|
1666 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data);
|
|
1667 return JVMTI_ERROR_NONE;
|
|
1668 } /* end IterateOverReachableObjects */
|
|
1669
|
|
1670
|
|
1671 // heap_object_callback - pre-checked for NULL
|
|
1672 // user_data - NULL is a valid value, must be checked
|
|
1673 jvmtiError
|
|
1674 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
|
|
1675 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging);
|
|
1676 Thread *thread = Thread::current();
|
|
1677 HandleMark hm(thread);
|
|
1678 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data);
|
|
1679 return JVMTI_ERROR_NONE;
|
|
1680 } /* end IterateOverHeap */
|
|
1681
|
|
1682
|
|
1683 // k_mirror - may be primitive, this must be checked
|
|
1684 // heap_object_callback - pre-checked for NULL
|
|
1685 // user_data - NULL is a valid value, must be checked
|
|
1686 jvmtiError
|
|
1687 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
|
|
1688 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
1689 // DO PRIMITIVE CLASS PROCESSING
|
|
1690 return JVMTI_ERROR_NONE;
|
|
1691 }
|
|
1692 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
1693 if (k_oop == NULL) {
|
|
1694 return JVMTI_ERROR_INVALID_CLASS;
|
|
1695 }
|
|
1696 Thread *thread = Thread::current();
|
|
1697 HandleMark hm(thread);
|
|
1698 KlassHandle klass (thread, k_oop);
|
|
1699 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging);
|
|
1700 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data);
|
|
1701 return JVMTI_ERROR_NONE;
|
|
1702 } /* end IterateOverInstancesOfClass */
|
|
1703
|
|
1704
|
|
1705 //
|
|
1706 // Local Variable functions
|
|
1707 //
|
|
1708
|
|
1709 // Threads_lock NOT held, java_thread not protected by lock
|
|
1710 // java_thread - pre-checked
|
|
1711 // java_thread - unchecked
|
|
1712 // depth - pre-checked as non-negative
|
|
1713 // value_ptr - pre-checked for NULL
|
|
1714 jvmtiError
|
|
1715 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) {
|
|
1716 JavaThread* current_thread = JavaThread::current();
|
|
1717 // rm object is created to clean up the javaVFrame created in
|
|
1718 // doit_prologue(), but after doit() is finished with it.
|
|
1719 ResourceMark rm(current_thread);
|
|
1720
|
|
1721 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot);
|
|
1722 VMThread::execute(&op);
|
|
1723 jvmtiError err = op.result();
|
|
1724 if (err != JVMTI_ERROR_NONE) {
|
|
1725 return err;
|
|
1726 } else {
|
|
1727 *value_ptr = op.value().l;
|
|
1728 return JVMTI_ERROR_NONE;
|
|
1729 }
|
|
1730 } /* end GetLocalObject */
|
|
1731
|
|
1732
|
|
1733 // Threads_lock NOT held, java_thread not protected by lock
|
|
1734 // java_thread - pre-checked
|
|
1735 // java_thread - unchecked
|
|
1736 // depth - pre-checked as non-negative
|
|
1737 // value_ptr - pre-checked for NULL
|
|
1738 jvmtiError
|
|
1739 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) {
|
|
1740 // rm object is created to clean up the javaVFrame created in
|
|
1741 // doit_prologue(), but after doit() is finished with it.
|
|
1742 ResourceMark rm;
|
|
1743
|
|
1744 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT);
|
|
1745 VMThread::execute(&op);
|
|
1746 *value_ptr = op.value().i;
|
|
1747 return op.result();
|
|
1748 } /* end GetLocalInt */
|
|
1749
|
|
1750
|
|
1751 // Threads_lock NOT held, java_thread not protected by lock
|
|
1752 // java_thread - pre-checked
|
|
1753 // java_thread - unchecked
|
|
1754 // depth - pre-checked as non-negative
|
|
1755 // value_ptr - pre-checked for NULL
|
|
1756 jvmtiError
|
|
1757 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) {
|
|
1758 // rm object is created to clean up the javaVFrame created in
|
|
1759 // doit_prologue(), but after doit() is finished with it.
|
|
1760 ResourceMark rm;
|
|
1761
|
|
1762 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG);
|
|
1763 VMThread::execute(&op);
|
|
1764 *value_ptr = op.value().j;
|
|
1765 return op.result();
|
|
1766 } /* end GetLocalLong */
|
|
1767
|
|
1768
|
|
1769 // Threads_lock NOT held, java_thread not protected by lock
|
|
1770 // java_thread - pre-checked
|
|
1771 // java_thread - unchecked
|
|
1772 // depth - pre-checked as non-negative
|
|
1773 // value_ptr - pre-checked for NULL
|
|
1774 jvmtiError
|
|
1775 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) {
|
|
1776 // rm object is created to clean up the javaVFrame created in
|
|
1777 // doit_prologue(), but after doit() is finished with it.
|
|
1778 ResourceMark rm;
|
|
1779
|
|
1780 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT);
|
|
1781 VMThread::execute(&op);
|
|
1782 *value_ptr = op.value().f;
|
|
1783 return op.result();
|
|
1784 } /* end GetLocalFloat */
|
|
1785
|
|
1786
|
|
1787 // Threads_lock NOT held, java_thread not protected by lock
|
|
1788 // java_thread - pre-checked
|
|
1789 // java_thread - unchecked
|
|
1790 // depth - pre-checked as non-negative
|
|
1791 // value_ptr - pre-checked for NULL
|
|
1792 jvmtiError
|
|
1793 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) {
|
|
1794 // rm object is created to clean up the javaVFrame created in
|
|
1795 // doit_prologue(), but after doit() is finished with it.
|
|
1796 ResourceMark rm;
|
|
1797
|
|
1798 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE);
|
|
1799 VMThread::execute(&op);
|
|
1800 *value_ptr = op.value().d;
|
|
1801 return op.result();
|
|
1802 } /* end GetLocalDouble */
|
|
1803
|
|
1804
|
|
1805 // Threads_lock NOT held, java_thread not protected by lock
|
|
1806 // java_thread - pre-checked
|
|
1807 // java_thread - unchecked
|
|
1808 // depth - pre-checked as non-negative
|
|
1809 jvmtiError
|
|
1810 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) {
|
|
1811 // rm object is created to clean up the javaVFrame created in
|
|
1812 // doit_prologue(), but after doit() is finished with it.
|
|
1813 ResourceMark rm;
|
|
1814 jvalue val;
|
|
1815 val.l = value;
|
|
1816 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val);
|
|
1817 VMThread::execute(&op);
|
|
1818 return op.result();
|
|
1819 } /* end SetLocalObject */
|
|
1820
|
|
1821
|
|
1822 // Threads_lock NOT held, java_thread not protected by lock
|
|
1823 // java_thread - pre-checked
|
|
1824 // java_thread - unchecked
|
|
1825 // depth - pre-checked as non-negative
|
|
1826 jvmtiError
|
|
1827 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) {
|
|
1828 // rm object is created to clean up the javaVFrame created in
|
|
1829 // doit_prologue(), but after doit() is finished with it.
|
|
1830 ResourceMark rm;
|
|
1831 jvalue val;
|
|
1832 val.i = value;
|
|
1833 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val);
|
|
1834 VMThread::execute(&op);
|
|
1835 return op.result();
|
|
1836 } /* end SetLocalInt */
|
|
1837
|
|
1838
|
|
1839 // Threads_lock NOT held, java_thread not protected by lock
|
|
1840 // java_thread - pre-checked
|
|
1841 // java_thread - unchecked
|
|
1842 // depth - pre-checked as non-negative
|
|
1843 jvmtiError
|
|
1844 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) {
|
|
1845 // rm object is created to clean up the javaVFrame created in
|
|
1846 // doit_prologue(), but after doit() is finished with it.
|
|
1847 ResourceMark rm;
|
|
1848 jvalue val;
|
|
1849 val.j = value;
|
|
1850 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val);
|
|
1851 VMThread::execute(&op);
|
|
1852 return op.result();
|
|
1853 } /* end SetLocalLong */
|
|
1854
|
|
1855
|
|
1856 // Threads_lock NOT held, java_thread not protected by lock
|
|
1857 // java_thread - pre-checked
|
|
1858 // java_thread - unchecked
|
|
1859 // depth - pre-checked as non-negative
|
|
1860 jvmtiError
|
|
1861 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) {
|
|
1862 // rm object is created to clean up the javaVFrame created in
|
|
1863 // doit_prologue(), but after doit() is finished with it.
|
|
1864 ResourceMark rm;
|
|
1865 jvalue val;
|
|
1866 val.f = value;
|
|
1867 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val);
|
|
1868 VMThread::execute(&op);
|
|
1869 return op.result();
|
|
1870 } /* end SetLocalFloat */
|
|
1871
|
|
1872
|
|
1873 // Threads_lock NOT held, java_thread not protected by lock
|
|
1874 // java_thread - pre-checked
|
|
1875 // java_thread - unchecked
|
|
1876 // depth - pre-checked as non-negative
|
|
1877 jvmtiError
|
|
1878 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) {
|
|
1879 // rm object is created to clean up the javaVFrame created in
|
|
1880 // doit_prologue(), but after doit() is finished with it.
|
|
1881 ResourceMark rm;
|
|
1882 jvalue val;
|
|
1883 val.d = value;
|
|
1884 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val);
|
|
1885 VMThread::execute(&op);
|
|
1886 return op.result();
|
|
1887 } /* end SetLocalDouble */
|
|
1888
|
|
1889
|
|
1890 //
|
|
1891 // Breakpoint functions
|
|
1892 //
|
|
1893
|
|
1894 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
1895 jvmtiError
|
|
1896 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) {
|
|
1897 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
1898 if (location < 0) { // simple invalid location check first
|
|
1899 return JVMTI_ERROR_INVALID_LOCATION;
|
|
1900 }
|
|
1901 // verify that the breakpoint is not past the end of the method
|
|
1902 if (location >= (jlocation) method_oop->code_size()) {
|
|
1903 return JVMTI_ERROR_INVALID_LOCATION;
|
|
1904 }
|
|
1905
|
|
1906 ResourceMark rm;
|
|
1907 JvmtiBreakpoint bp(method_oop, location);
|
|
1908 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
|
|
1909 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE)
|
|
1910 return JVMTI_ERROR_DUPLICATE;
|
|
1911
|
|
1912 if (TraceJVMTICalls) {
|
|
1913 jvmti_breakpoints.print();
|
|
1914 }
|
|
1915
|
|
1916 return JVMTI_ERROR_NONE;
|
|
1917 } /* end SetBreakpoint */
|
|
1918
|
|
1919
|
|
1920 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
1921 jvmtiError
|
|
1922 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) {
|
|
1923 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
1924
|
|
1925 if (location < 0) { // simple invalid location check first
|
|
1926 return JVMTI_ERROR_INVALID_LOCATION;
|
|
1927 }
|
|
1928
|
|
1929 // verify that the breakpoint is not past the end of the method
|
|
1930 if (location >= (jlocation) method_oop->code_size()) {
|
|
1931 return JVMTI_ERROR_INVALID_LOCATION;
|
|
1932 }
|
|
1933
|
|
1934 JvmtiBreakpoint bp(method_oop, location);
|
|
1935
|
|
1936 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
|
|
1937 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND)
|
|
1938 return JVMTI_ERROR_NOT_FOUND;
|
|
1939
|
|
1940 if (TraceJVMTICalls) {
|
|
1941 jvmti_breakpoints.print();
|
|
1942 }
|
|
1943
|
|
1944 return JVMTI_ERROR_NONE;
|
|
1945 } /* end ClearBreakpoint */
|
|
1946
|
|
1947
|
|
1948 //
|
|
1949 // Watched Field functions
|
|
1950 //
|
|
1951
|
|
1952 jvmtiError
|
|
1953 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
|
|
1954 // make sure we haven't set this watch before
|
|
1955 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE;
|
|
1956 fdesc_ptr->set_is_field_access_watched(true);
|
|
1957 update_klass_field_access_flag(fdesc_ptr);
|
|
1958
|
|
1959 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true);
|
|
1960
|
|
1961 return JVMTI_ERROR_NONE;
|
|
1962 } /* end SetFieldAccessWatch */
|
|
1963
|
|
1964
|
|
1965 jvmtiError
|
|
1966 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
|
|
1967 // make sure we have a watch to clear
|
|
1968 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND;
|
|
1969 fdesc_ptr->set_is_field_access_watched(false);
|
|
1970 update_klass_field_access_flag(fdesc_ptr);
|
|
1971
|
|
1972 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false);
|
|
1973
|
|
1974 return JVMTI_ERROR_NONE;
|
|
1975 } /* end ClearFieldAccessWatch */
|
|
1976
|
|
1977
|
|
1978 jvmtiError
|
|
1979 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
|
|
1980 // make sure we haven't set this watch before
|
|
1981 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE;
|
|
1982 fdesc_ptr->set_is_field_modification_watched(true);
|
|
1983 update_klass_field_access_flag(fdesc_ptr);
|
|
1984
|
|
1985 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true);
|
|
1986
|
|
1987 return JVMTI_ERROR_NONE;
|
|
1988 } /* end SetFieldModificationWatch */
|
|
1989
|
|
1990
|
|
1991 jvmtiError
|
|
1992 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
|
|
1993 // make sure we have a watch to clear
|
|
1994 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND;
|
|
1995 fdesc_ptr->set_is_field_modification_watched(false);
|
|
1996 update_klass_field_access_flag(fdesc_ptr);
|
|
1997
|
|
1998 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false);
|
|
1999
|
|
2000 return JVMTI_ERROR_NONE;
|
|
2001 } /* end ClearFieldModificationWatch */
|
|
2002
|
|
2003 //
|
|
2004 // Class functions
|
|
2005 //
|
|
2006
|
|
2007
|
|
2008 // k_mirror - may be primitive, this must be checked
|
|
2009 // signature_ptr - NULL is a valid value, must be checked
|
|
2010 // generic_ptr - NULL is a valid value, must be checked
|
|
2011 jvmtiError
|
|
2012 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) {
|
|
2013 ResourceMark rm;
|
|
2014 bool isPrimitive = java_lang_Class::is_primitive(k_mirror);
|
|
2015 klassOop k = NULL;
|
|
2016 if (!isPrimitive) {
|
|
2017 k = java_lang_Class::as_klassOop(k_mirror);
|
|
2018 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2019 }
|
|
2020 if (signature_ptr != NULL) {
|
|
2021 char* result = NULL;
|
|
2022 if (isPrimitive) {
|
|
2023 char tchar = type2char(java_lang_Class::primitive_type(k_mirror));
|
|
2024 result = (char*) jvmtiMalloc(2);
|
|
2025 result[0] = tchar;
|
|
2026 result[1] = '\0';
|
|
2027 } else {
|
|
2028 const char* class_sig = Klass::cast(k)->signature_name();
|
|
2029 result = (char *) jvmtiMalloc(strlen(class_sig)+1);
|
|
2030 strcpy(result, class_sig);
|
|
2031 }
|
|
2032 *signature_ptr = result;
|
|
2033 }
|
|
2034 if (generic_ptr != NULL) {
|
|
2035 *generic_ptr = NULL;
|
|
2036 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) {
|
|
2037 symbolOop soo = instanceKlass::cast(k)->generic_signature();
|
|
2038 if (soo != NULL) {
|
|
2039 const char *gen_sig = soo->as_C_string();
|
|
2040 if (gen_sig != NULL) {
|
|
2041 char* gen_result;
|
|
2042 jvmtiError err = allocate(strlen(gen_sig) + 1,
|
|
2043 (unsigned char **)&gen_result);
|
|
2044 if (err != JVMTI_ERROR_NONE) {
|
|
2045 return err;
|
|
2046 }
|
|
2047 strcpy(gen_result, gen_sig);
|
|
2048 *generic_ptr = gen_result;
|
|
2049 }
|
|
2050 }
|
|
2051 }
|
|
2052 }
|
|
2053 return JVMTI_ERROR_NONE;
|
|
2054 } /* end GetClassSignature */
|
|
2055
|
|
2056
|
|
2057 // k_mirror - may be primitive, this must be checked
|
|
2058 // status_ptr - pre-checked for NULL
|
|
2059 jvmtiError
|
|
2060 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) {
|
|
2061 jint result = 0;
|
|
2062 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2063 result |= JVMTI_CLASS_STATUS_PRIMITIVE;
|
|
2064 } else {
|
|
2065 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2066 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2067 result = Klass::cast(k)->jvmti_class_status();
|
|
2068 }
|
|
2069 *status_ptr = result;
|
|
2070
|
|
2071 return JVMTI_ERROR_NONE;
|
|
2072 } /* end GetClassStatus */
|
|
2073
|
|
2074
|
|
2075 // k_mirror - may be primitive, this must be checked
|
|
2076 // source_name_ptr - pre-checked for NULL
|
|
2077 jvmtiError
|
|
2078 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) {
|
|
2079 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2080 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2081 }
|
|
2082 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror);
|
|
2083 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS);
|
|
2084
|
|
2085 if (!Klass::cast(k_klass)->oop_is_instance()) {
|
|
2086 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2087 }
|
|
2088
|
|
2089 symbolOop sfnOop = instanceKlass::cast(k_klass)->source_file_name();
|
|
2090 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
2091 {
|
|
2092 JavaThread* current_thread = JavaThread::current();
|
|
2093 ResourceMark rm(current_thread);
|
|
2094 const char* sfncp = (const char*) sfnOop->as_C_string();
|
|
2095 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1);
|
|
2096 strcpy(*source_name_ptr, sfncp);
|
|
2097 }
|
|
2098
|
|
2099 return JVMTI_ERROR_NONE;
|
|
2100 } /* end GetSourceFileName */
|
|
2101
|
|
2102
|
|
2103 // k_mirror - may be primitive, this must be checked
|
|
2104 // modifiers_ptr - pre-checked for NULL
|
|
2105 jvmtiError
|
|
2106 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) {
|
|
2107 JavaThread* current_thread = JavaThread::current();
|
|
2108 jint result = 0;
|
|
2109 if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
2110 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2111 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2112 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass");
|
|
2113 result = Klass::cast(k)->compute_modifier_flags(current_thread);
|
|
2114 JavaThread* THREAD = current_thread; // pass to macros
|
|
2115 if (HAS_PENDING_EXCEPTION) {
|
|
2116 CLEAR_PENDING_EXCEPTION;
|
|
2117 return JVMTI_ERROR_INTERNAL;
|
|
2118 };
|
|
2119
|
|
2120 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()).
|
|
2121 if(Klass::cast(k)->is_super()) {
|
|
2122 result |= JVM_ACC_SUPER;
|
|
2123 }
|
|
2124 } else {
|
|
2125 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
|
|
2126 }
|
|
2127 *modifiers_ptr = result;
|
|
2128
|
|
2129 return JVMTI_ERROR_NONE;
|
|
2130 } /* end GetClassModifiers */
|
|
2131
|
|
2132
|
|
2133 // k_mirror - may be primitive, this must be checked
|
|
2134 // method_count_ptr - pre-checked for NULL
|
|
2135 // methods_ptr - pre-checked for NULL
|
|
2136 jvmtiError
|
|
2137 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) {
|
|
2138 JavaThread* current_thread = JavaThread::current();
|
|
2139 HandleMark hm(current_thread);
|
|
2140
|
|
2141 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2142 *method_count_ptr = 0;
|
|
2143 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
|
|
2144 return JVMTI_ERROR_NONE;
|
|
2145 }
|
|
2146 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2147 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2148
|
|
2149 // Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
2150 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
|
|
2151 return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
2152 }
|
|
2153
|
|
2154 if (!Klass::cast(k)->oop_is_instance()) {
|
|
2155 *method_count_ptr = 0;
|
|
2156 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
|
|
2157 return JVMTI_ERROR_NONE;
|
|
2158 }
|
|
2159 instanceKlassHandle instanceK_h(current_thread, k);
|
|
2160 // Allocate the result and fill it in
|
|
2161 int result_length = instanceK_h->methods()->length();
|
|
2162 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID));
|
|
2163 int index;
|
|
2164 if (JvmtiExport::can_maintain_original_method_order()) {
|
|
2165 // Use the original method ordering indices stored in the class, so we can emit
|
|
2166 // jmethodIDs in the order they appeared in the class file
|
|
2167 for (index = 0; index < result_length; index++) {
|
|
2168 methodOop m = methodOop(instanceK_h->methods()->obj_at(index));
|
|
2169 int original_index = instanceK_h->method_ordering()->int_at(index);
|
|
2170 assert(original_index >= 0 && original_index < result_length, "invalid original method index");
|
|
2171 jmethodID id = m->jmethod_id();
|
|
2172 result_list[original_index] = id;
|
|
2173 }
|
|
2174 } else {
|
|
2175 // otherwise just copy in any order
|
|
2176 for (index = 0; index < result_length; index++) {
|
|
2177 methodOop m = methodOop(instanceK_h->methods()->obj_at(index));
|
|
2178 jmethodID id = m->jmethod_id();
|
|
2179 result_list[index] = id;
|
|
2180 }
|
|
2181 }
|
|
2182 // Fill in return value.
|
|
2183 *method_count_ptr = result_length;
|
|
2184 *methods_ptr = result_list;
|
|
2185
|
|
2186 return JVMTI_ERROR_NONE;
|
|
2187 } /* end GetClassMethods */
|
|
2188
|
|
2189
|
|
2190 // k_mirror - may be primitive, this must be checked
|
|
2191 // field_count_ptr - pre-checked for NULL
|
|
2192 // fields_ptr - pre-checked for NULL
|
|
2193 jvmtiError
|
|
2194 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) {
|
|
2195 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2196 *field_count_ptr = 0;
|
|
2197 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
|
|
2198 return JVMTI_ERROR_NONE;
|
|
2199 }
|
|
2200 JavaThread* current_thread = JavaThread::current();
|
|
2201 HandleMark hm(current_thread);
|
|
2202 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2203 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2204
|
|
2205 // Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
2206 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
|
|
2207 return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
2208 }
|
|
2209
|
|
2210 if (!Klass::cast(k)->oop_is_instance()) {
|
|
2211 *field_count_ptr = 0;
|
|
2212 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
|
|
2213 return JVMTI_ERROR_NONE;
|
|
2214 }
|
|
2215
|
|
2216
|
|
2217 instanceKlassHandle instanceK_h(current_thread, k);
|
|
2218
|
|
2219 int result_count = 0;
|
|
2220 // First, count the fields.
|
|
2221 FilteredFieldStream flds(instanceK_h, true, true);
|
|
2222 result_count = flds.field_count();
|
|
2223
|
|
2224 // Allocate the result and fill it in
|
|
2225 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID));
|
|
2226 // The JVMTI spec requires fields in the order they occur in the class file,
|
|
2227 // this is the reverse order of what FieldStream hands out.
|
|
2228 int id_index = (result_count - 1);
|
|
2229
|
|
2230 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) {
|
|
2231 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID(
|
|
2232 instanceK_h, src_st.offset(),
|
|
2233 src_st.access_flags().is_static());
|
|
2234 }
|
|
2235 assert(id_index == -1, "just checking");
|
|
2236 // Fill in the results
|
|
2237 *field_count_ptr = result_count;
|
|
2238 *fields_ptr = result_list;
|
|
2239
|
|
2240 return JVMTI_ERROR_NONE;
|
|
2241 } /* end GetClassFields */
|
|
2242
|
|
2243
|
|
2244 // k_mirror - may be primitive, this must be checked
|
|
2245 // interface_count_ptr - pre-checked for NULL
|
|
2246 // interfaces_ptr - pre-checked for NULL
|
|
2247 jvmtiError
|
|
2248 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) {
|
|
2249 {
|
|
2250 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2251 *interface_count_ptr = 0;
|
|
2252 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
|
|
2253 return JVMTI_ERROR_NONE;
|
|
2254 }
|
|
2255 JavaThread* current_thread = JavaThread::current();
|
|
2256 HandleMark hm(current_thread);
|
|
2257 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2258 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2259
|
|
2260 // Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
2261 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) ))
|
|
2262 return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
2263
|
|
2264 if (!Klass::cast(k)->oop_is_instance()) {
|
|
2265 *interface_count_ptr = 0;
|
|
2266 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
|
|
2267 return JVMTI_ERROR_NONE;
|
|
2268 }
|
|
2269
|
|
2270 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces());
|
|
2271 const int result_length = (interface_list.is_null() ? 0 : interface_list->length());
|
|
2272 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass));
|
|
2273 for (int i_index = 0; i_index < result_length; i_index += 1) {
|
|
2274 oop oop_at = interface_list->obj_at(i_index);
|
|
2275 assert(oop_at->is_klass(), "interfaces must be klassOops");
|
|
2276 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way?
|
|
2277 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces");
|
|
2278 oop mirror_at = Klass::cast(klassOop_at)->java_mirror();
|
|
2279 Handle handle_at = Handle(current_thread, mirror_at);
|
|
2280 result_list[i_index] = (jclass) jni_reference(handle_at);
|
|
2281 }
|
|
2282 *interface_count_ptr = result_length;
|
|
2283 *interfaces_ptr = result_list;
|
|
2284 }
|
|
2285
|
|
2286 return JVMTI_ERROR_NONE;
|
|
2287 } /* end GetImplementedInterfaces */
|
|
2288
|
|
2289
|
|
2290 // k_mirror - may be primitive, this must be checked
|
|
2291 // minor_version_ptr - pre-checked for NULL
|
|
2292 // major_version_ptr - pre-checked for NULL
|
|
2293 jvmtiError
|
|
2294 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) {
|
|
2295 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2296 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2297 }
|
|
2298 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
2299 Thread *thread = Thread::current();
|
|
2300 HandleMark hm(thread);
|
|
2301 KlassHandle klass(thread, k_oop);
|
|
2302
|
|
2303 jint status = klass->jvmti_class_status();
|
|
2304 if (status & (JVMTI_CLASS_STATUS_ERROR)) {
|
|
2305 return JVMTI_ERROR_INVALID_CLASS;
|
|
2306 }
|
|
2307 if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
|
|
2308 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2309 }
|
|
2310
|
|
2311 instanceKlassHandle ik(thread, k_oop);
|
|
2312 *minor_version_ptr = ik->minor_version();
|
|
2313 *major_version_ptr = ik->major_version();
|
|
2314
|
|
2315 return JVMTI_ERROR_NONE;
|
|
2316 } /* end GetClassVersionNumbers */
|
|
2317
|
|
2318
|
|
2319 // k_mirror - may be primitive, this must be checked
|
|
2320 // constant_pool_count_ptr - pre-checked for NULL
|
|
2321 // constant_pool_byte_count_ptr - pre-checked for NULL
|
|
2322 // constant_pool_bytes_ptr - pre-checked for NULL
|
|
2323 jvmtiError
|
|
2324 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) {
|
|
2325 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2326 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2327 }
|
|
2328
|
|
2329 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
2330 Thread *thread = Thread::current();
|
|
2331 HandleMark hm(thread);
|
|
2332 ResourceMark rm(thread);
|
|
2333 KlassHandle klass(thread, k_oop);
|
|
2334
|
|
2335 jint status = klass->jvmti_class_status();
|
|
2336 if (status & (JVMTI_CLASS_STATUS_ERROR)) {
|
|
2337 return JVMTI_ERROR_INVALID_CLASS;
|
|
2338 }
|
|
2339 if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
|
|
2340 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2341 }
|
|
2342
|
|
2343 instanceKlassHandle ikh(thread, k_oop);
|
|
2344 constantPoolHandle constants(thread, ikh->constants());
|
|
2345 ObjectLocker ol(constants, thread); // lock constant pool while we query it
|
|
2346
|
|
2347 JvmtiConstantPoolReconstituter reconstituter(ikh);
|
|
2348 if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
2349 return reconstituter.get_error();
|
|
2350 }
|
|
2351
|
|
2352 unsigned char *cpool_bytes;
|
|
2353 int cpool_size = reconstituter.cpool_size();
|
|
2354 if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
2355 return reconstituter.get_error();
|
|
2356 }
|
|
2357 jvmtiError res = allocate(cpool_size, &cpool_bytes);
|
|
2358 if (res != JVMTI_ERROR_NONE) {
|
|
2359 return res;
|
|
2360 }
|
|
2361 reconstituter.copy_cpool_bytes(cpool_bytes);
|
|
2362 if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
2363 return reconstituter.get_error();
|
|
2364 }
|
|
2365
|
|
2366 *constant_pool_count_ptr = constants->length();
|
|
2367 *constant_pool_byte_count_ptr = cpool_size;
|
|
2368 *constant_pool_bytes_ptr = cpool_bytes;
|
|
2369
|
|
2370 return JVMTI_ERROR_NONE;
|
|
2371 } /* end GetConstantPool */
|
|
2372
|
|
2373
|
|
2374 // k_mirror - may be primitive, this must be checked
|
|
2375 // is_interface_ptr - pre-checked for NULL
|
|
2376 jvmtiError
|
|
2377 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) {
|
|
2378 {
|
|
2379 bool result = false;
|
|
2380 if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
2381 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2382 if (k != NULL && Klass::cast(k)->is_interface()) {
|
|
2383 result = true;
|
|
2384 }
|
|
2385 }
|
|
2386 *is_interface_ptr = result;
|
|
2387 }
|
|
2388
|
|
2389 return JVMTI_ERROR_NONE;
|
|
2390 } /* end IsInterface */
|
|
2391
|
|
2392
|
|
2393 // k_mirror - may be primitive, this must be checked
|
|
2394 // is_array_class_ptr - pre-checked for NULL
|
|
2395 jvmtiError
|
|
2396 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) {
|
|
2397 {
|
|
2398 bool result = false;
|
|
2399 if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
2400 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2401 if (k != NULL && Klass::cast(k)->oop_is_array()) {
|
|
2402 result = true;
|
|
2403 }
|
|
2404 }
|
|
2405 *is_array_class_ptr = result;
|
|
2406 }
|
|
2407
|
|
2408 return JVMTI_ERROR_NONE;
|
|
2409 } /* end IsArrayClass */
|
|
2410
|
|
2411
|
|
2412 // k_mirror - may be primitive, this must be checked
|
|
2413 // classloader_ptr - pre-checked for NULL
|
|
2414 jvmtiError
|
|
2415 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) {
|
|
2416 {
|
|
2417 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2418 *classloader_ptr = (jclass) jni_reference(Handle());
|
|
2419 return JVMTI_ERROR_NONE;
|
|
2420 }
|
|
2421 JavaThread* current_thread = JavaThread::current();
|
|
2422 HandleMark hm(current_thread);
|
|
2423 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2424 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2425
|
|
2426 oop result_oop = Klass::cast(k)->class_loader();
|
|
2427 if (result_oop == NULL) {
|
|
2428 *classloader_ptr = (jclass) jni_reference(Handle());
|
|
2429 return JVMTI_ERROR_NONE;
|
|
2430 }
|
|
2431 Handle result_handle = Handle(current_thread, result_oop);
|
|
2432 jclass result_jnihandle = (jclass) jni_reference(result_handle);
|
|
2433 *classloader_ptr = result_jnihandle;
|
|
2434 }
|
|
2435 return JVMTI_ERROR_NONE;
|
|
2436 } /* end GetClassLoader */
|
|
2437
|
|
2438
|
|
2439 // k_mirror - may be primitive, this must be checked
|
|
2440 // source_debug_extension_ptr - pre-checked for NULL
|
|
2441 jvmtiError
|
|
2442 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) {
|
|
2443 {
|
|
2444 if (java_lang_Class::is_primitive(k_mirror)) {
|
|
2445 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2446 }
|
|
2447 klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
2448 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
2449 if (!Klass::cast(k)->oop_is_instance()) {
|
|
2450 return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
2451 }
|
|
2452 symbolOop sdeOop = instanceKlass::cast(k)->source_debug_extension();
|
|
2453 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
2454
|
|
2455 {
|
|
2456 JavaThread* current_thread = JavaThread::current();
|
|
2457 ResourceMark rm(current_thread);
|
|
2458 const char* sdecp = (const char*) sdeOop->as_C_string();
|
|
2459 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1);
|
|
2460 strcpy(*source_debug_extension_ptr, sdecp);
|
|
2461 }
|
|
2462 }
|
|
2463
|
|
2464 return JVMTI_ERROR_NONE;
|
|
2465 } /* end GetSourceDebugExtension */
|
|
2466
|
|
2467 //
|
|
2468 // Object functions
|
|
2469 //
|
|
2470
|
|
2471 // hash_code_ptr - pre-checked for NULL
|
|
2472 jvmtiError
|
|
2473 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) {
|
|
2474 oop mirror = JNIHandles::resolve_external_guard(object);
|
|
2475 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
|
|
2476 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER);
|
|
2477
|
|
2478 {
|
|
2479 jint result = (jint) mirror->identity_hash();
|
|
2480 *hash_code_ptr = result;
|
|
2481 }
|
|
2482 return JVMTI_ERROR_NONE;
|
|
2483 } /* end GetObjectHashCode */
|
|
2484
|
|
2485
|
|
2486 // info_ptr - pre-checked for NULL
|
|
2487 jvmtiError
|
|
2488 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) {
|
|
2489 JavaThread* calling_thread = JavaThread::current();
|
|
2490 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr);
|
|
2491 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) {
|
|
2492 // Some of the critical threads were not suspended. go to a safepoint and try again
|
|
2493 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr);
|
|
2494 VMThread::execute(&op);
|
|
2495 err = op.result();
|
|
2496 }
|
|
2497 return err;
|
|
2498 } /* end GetObjectMonitorUsage */
|
|
2499
|
|
2500
|
|
2501 //
|
|
2502 // Field functions
|
|
2503 //
|
|
2504
|
|
2505 // name_ptr - NULL is a valid value, must be checked
|
|
2506 // signature_ptr - NULL is a valid value, must be checked
|
|
2507 // generic_ptr - NULL is a valid value, must be checked
|
|
2508 jvmtiError
|
|
2509 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) {
|
|
2510 JavaThread* current_thread = JavaThread::current();
|
|
2511 ResourceMark rm(current_thread);
|
|
2512 if (name_ptr == NULL) {
|
|
2513 // just don't return the name
|
|
2514 } else {
|
|
2515 const char* fieldName = fdesc_ptr->name()->as_C_string();
|
|
2516 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1);
|
|
2517 if (*name_ptr == NULL)
|
|
2518 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
2519 strcpy(*name_ptr, fieldName);
|
|
2520 }
|
|
2521 if (signature_ptr== NULL) {
|
|
2522 // just don't return the signature
|
|
2523 } else {
|
|
2524 const char* fieldSignature = fdesc_ptr->signature()->as_C_string();
|
|
2525 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1);
|
|
2526 if (*signature_ptr == NULL)
|
|
2527 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
2528 strcpy(*signature_ptr, fieldSignature);
|
|
2529 }
|
|
2530 if (generic_ptr != NULL) {
|
|
2531 *generic_ptr = NULL;
|
|
2532 symbolOop soop = fdesc_ptr->generic_signature();
|
|
2533 if (soop != NULL) {
|
|
2534 const char* gen_sig = soop->as_C_string();
|
|
2535 if (gen_sig != NULL) {
|
|
2536 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
|
|
2537 if (err != JVMTI_ERROR_NONE) {
|
|
2538 return err;
|
|
2539 }
|
|
2540 strcpy(*generic_ptr, gen_sig);
|
|
2541 }
|
|
2542 }
|
|
2543 }
|
|
2544 return JVMTI_ERROR_NONE;
|
|
2545 } /* end GetFieldName */
|
|
2546
|
|
2547
|
|
2548 // declaring_class_ptr - pre-checked for NULL
|
|
2549 jvmtiError
|
|
2550 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) {
|
|
2551
|
|
2552 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder());
|
|
2553 return JVMTI_ERROR_NONE;
|
|
2554 } /* end GetFieldDeclaringClass */
|
|
2555
|
|
2556
|
|
2557 // modifiers_ptr - pre-checked for NULL
|
|
2558 jvmtiError
|
|
2559 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) {
|
|
2560
|
|
2561 AccessFlags resultFlags = fdesc_ptr->access_flags();
|
|
2562 jint result = resultFlags.as_int();
|
|
2563 *modifiers_ptr = result;
|
|
2564
|
|
2565 return JVMTI_ERROR_NONE;
|
|
2566 } /* end GetFieldModifiers */
|
|
2567
|
|
2568
|
|
2569 // is_synthetic_ptr - pre-checked for NULL
|
|
2570 jvmtiError
|
|
2571 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) {
|
|
2572 *is_synthetic_ptr = fdesc_ptr->is_synthetic();
|
|
2573 return JVMTI_ERROR_NONE;
|
|
2574 } /* end IsFieldSynthetic */
|
|
2575
|
|
2576
|
|
2577 //
|
|
2578 // Method functions
|
|
2579 //
|
|
2580
|
|
2581 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2582 // name_ptr - NULL is a valid value, must be checked
|
|
2583 // signature_ptr - NULL is a valid value, must be checked
|
|
2584 // generic_ptr - NULL is a valid value, must be checked
|
|
2585 jvmtiError
|
|
2586 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) {
|
|
2587 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2588 JavaThread* current_thread = JavaThread::current();
|
|
2589
|
|
2590 ResourceMark rm(current_thread); // get the utf8 name and signature
|
|
2591 if (name_ptr == NULL) {
|
|
2592 // just don't return the name
|
|
2593 } else {
|
|
2594 const char* utf8_name = (const char *) method_oop->name()->as_utf8();
|
|
2595 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1);
|
|
2596 strcpy(*name_ptr, utf8_name);
|
|
2597 }
|
|
2598 if (signature_ptr == NULL) {
|
|
2599 // just don't return the signature
|
|
2600 } else {
|
|
2601 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8();
|
|
2602 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1);
|
|
2603 strcpy(*signature_ptr, utf8_signature);
|
|
2604 }
|
|
2605
|
|
2606 if (generic_ptr != NULL) {
|
|
2607 *generic_ptr = NULL;
|
|
2608 symbolOop soop = method_oop->generic_signature();
|
|
2609 if (soop != NULL) {
|
|
2610 const char* gen_sig = soop->as_C_string();
|
|
2611 if (gen_sig != NULL) {
|
|
2612 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
|
|
2613 if (err != JVMTI_ERROR_NONE) {
|
|
2614 return err;
|
|
2615 }
|
|
2616 strcpy(*generic_ptr, gen_sig);
|
|
2617 }
|
|
2618 }
|
|
2619 }
|
|
2620 return JVMTI_ERROR_NONE;
|
|
2621 } /* end GetMethodName */
|
|
2622
|
|
2623
|
|
2624 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2625 // declaring_class_ptr - pre-checked for NULL
|
|
2626 jvmtiError
|
|
2627 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) {
|
|
2628 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2629 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder());
|
|
2630 return JVMTI_ERROR_NONE;
|
|
2631 } /* end GetMethodDeclaringClass */
|
|
2632
|
|
2633
|
|
2634 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2635 // modifiers_ptr - pre-checked for NULL
|
|
2636 jvmtiError
|
|
2637 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) {
|
|
2638 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2639 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
|
|
2640 return JVMTI_ERROR_NONE;
|
|
2641 } /* end GetMethodModifiers */
|
|
2642
|
|
2643
|
|
2644 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2645 // max_ptr - pre-checked for NULL
|
|
2646 jvmtiError
|
|
2647 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) {
|
|
2648 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2649 // get max stack
|
|
2650 (*max_ptr) = method_oop->max_locals();
|
|
2651 return JVMTI_ERROR_NONE;
|
|
2652 } /* end GetMaxLocals */
|
|
2653
|
|
2654
|
|
2655 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2656 // size_ptr - pre-checked for NULL
|
|
2657 jvmtiError
|
|
2658 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) {
|
|
2659 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2660 // get size of arguments
|
|
2661
|
|
2662 (*size_ptr) = method_oop->size_of_parameters();
|
|
2663 return JVMTI_ERROR_NONE;
|
|
2664 } /* end GetArgumentsSize */
|
|
2665
|
|
2666
|
|
2667 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2668 // entry_count_ptr - pre-checked for NULL
|
|
2669 // table_ptr - pre-checked for NULL
|
|
2670 jvmtiError
|
|
2671 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) {
|
|
2672 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2673 if (!method_oop->has_linenumber_table()) {
|
|
2674 return (JVMTI_ERROR_ABSENT_INFORMATION);
|
|
2675 }
|
|
2676
|
|
2677 // The line number table is compressed so we don't know how big it is until decompressed.
|
|
2678 // Decompression is really fast so we just do it twice.
|
|
2679
|
|
2680 // Compute size of table
|
|
2681 jint num_entries = 0;
|
|
2682 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
|
|
2683 while (stream.read_pair()) {
|
|
2684 num_entries++;
|
|
2685 }
|
|
2686 jvmtiLineNumberEntry *jvmti_table =
|
|
2687 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry)));
|
|
2688
|
|
2689 // Fill jvmti table
|
|
2690 if (num_entries > 0) {
|
|
2691 int index = 0;
|
|
2692 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
|
|
2693 while (stream.read_pair()) {
|
|
2694 jvmti_table[index].start_location = (jlocation) stream.bci();
|
|
2695 jvmti_table[index].line_number = (jint) stream.line();
|
|
2696 index++;
|
|
2697 }
|
|
2698 assert(index == num_entries, "sanity check");
|
|
2699 }
|
|
2700
|
|
2701 // Set up results
|
|
2702 (*entry_count_ptr) = num_entries;
|
|
2703 (*table_ptr) = jvmti_table;
|
|
2704
|
|
2705 return JVMTI_ERROR_NONE;
|
|
2706 } /* end GetLineNumberTable */
|
|
2707
|
|
2708
|
|
2709 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2710 // start_location_ptr - pre-checked for NULL
|
|
2711 // end_location_ptr - pre-checked for NULL
|
|
2712 jvmtiError
|
|
2713 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) {
|
|
2714
|
|
2715 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2716 // get start and end location
|
|
2717 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1);
|
|
2718 if (method_oop->code_size() == 0) {
|
|
2719 // there is no code so there is no start location
|
|
2720 (*start_location_ptr) = (jlocation)(-1);
|
|
2721 } else {
|
|
2722 (*start_location_ptr) = (jlocation)(0);
|
|
2723 }
|
|
2724
|
|
2725 return JVMTI_ERROR_NONE;
|
|
2726 } /* end GetMethodLocation */
|
|
2727
|
|
2728
|
|
2729 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2730 // entry_count_ptr - pre-checked for NULL
|
|
2731 // table_ptr - pre-checked for NULL
|
|
2732 jvmtiError
|
|
2733 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) {
|
|
2734
|
|
2735 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2736 JavaThread* current_thread = JavaThread::current();
|
|
2737
|
|
2738 // does the klass have any local variable information?
|
|
2739 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder());
|
|
2740 if (!ik->access_flags().has_localvariable_table()) {
|
|
2741 return (JVMTI_ERROR_ABSENT_INFORMATION);
|
|
2742 }
|
|
2743
|
|
2744 constantPoolOop constants = method_oop->constants();
|
|
2745 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
2746
|
|
2747 // in the vm localvariable table representation, 6 consecutive elements in the table
|
|
2748 // represent a 6-tuple of shorts
|
|
2749 // [start_pc, length, name_index, descriptor_index, signature_index, index]
|
|
2750 jint num_entries = method_oop->localvariable_table_length();
|
|
2751 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *)
|
|
2752 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry)));
|
|
2753
|
|
2754 if (num_entries > 0) {
|
|
2755 LocalVariableTableElement* table = method_oop->localvariable_table_start();
|
|
2756 for (int i = 0; i < num_entries; i++) {
|
|
2757 // get the 5 tuple information from the vm table
|
|
2758 jlocation start_location = (jlocation) table[i].start_bci;
|
|
2759 jint length = (jint) table[i].length;
|
|
2760 int name_index = (int) table[i].name_cp_index;
|
|
2761 int signature_index = (int) table[i].descriptor_cp_index;
|
|
2762 int generic_signature_index = (int) table[i].signature_cp_index;
|
|
2763 jint slot = (jint) table[i].slot;
|
|
2764
|
|
2765 // get utf8 name and signature
|
|
2766 char *name_buf = NULL;
|
|
2767 char *sig_buf = NULL;
|
|
2768 char *gen_sig_buf = NULL;
|
|
2769 {
|
|
2770 ResourceMark rm(current_thread);
|
|
2771
|
|
2772 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8();
|
|
2773 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1);
|
|
2774 strcpy(name_buf, utf8_name);
|
|
2775
|
|
2776 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8();
|
|
2777 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1);
|
|
2778 strcpy(sig_buf, utf8_signature);
|
|
2779
|
|
2780 if (generic_signature_index > 0) {
|
|
2781 const char *utf8_gen_sign = (const char *)
|
|
2782 constants->symbol_at(generic_signature_index)->as_utf8();
|
|
2783 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1);
|
|
2784 strcpy(gen_sig_buf, utf8_gen_sign);
|
|
2785 }
|
|
2786 }
|
|
2787
|
|
2788 // fill in the jvmti local variable table
|
|
2789 jvmti_table[i].start_location = start_location;
|
|
2790 jvmti_table[i].length = length;
|
|
2791 jvmti_table[i].name = name_buf;
|
|
2792 jvmti_table[i].signature = sig_buf;
|
|
2793 jvmti_table[i].generic_signature = gen_sig_buf;
|
|
2794 jvmti_table[i].slot = slot;
|
|
2795 }
|
|
2796 }
|
|
2797
|
|
2798 // set results
|
|
2799 (*entry_count_ptr) = num_entries;
|
|
2800 (*table_ptr) = jvmti_table;
|
|
2801
|
|
2802 return JVMTI_ERROR_NONE;
|
|
2803 } /* end GetLocalVariableTable */
|
|
2804
|
|
2805
|
|
2806 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2807 // bytecode_count_ptr - pre-checked for NULL
|
|
2808 // bytecodes_ptr - pre-checked for NULL
|
|
2809 jvmtiError
|
|
2810 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) {
|
|
2811 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2812
|
|
2813 HandleMark hm;
|
|
2814 methodHandle method(method_oop);
|
|
2815 jint size = (jint)method->code_size();
|
|
2816 jvmtiError err = allocate(size, bytecodes_ptr);
|
|
2817 if (err != JVMTI_ERROR_NONE) {
|
|
2818 return err;
|
|
2819 }
|
|
2820
|
|
2821 (*bytecode_count_ptr) = size;
|
|
2822 // get byte codes
|
|
2823 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr);
|
|
2824
|
|
2825 return JVMTI_ERROR_NONE;
|
|
2826 } /* end GetBytecodes */
|
|
2827
|
|
2828
|
|
2829 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2830 // is_native_ptr - pre-checked for NULL
|
|
2831 jvmtiError
|
|
2832 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) {
|
|
2833 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2834 (*is_native_ptr) = method_oop->is_native();
|
|
2835 return JVMTI_ERROR_NONE;
|
|
2836 } /* end IsMethodNative */
|
|
2837
|
|
2838
|
|
2839 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2840 // is_synthetic_ptr - pre-checked for NULL
|
|
2841 jvmtiError
|
|
2842 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) {
|
|
2843 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
2844 (*is_synthetic_ptr) = method_oop->is_synthetic();
|
|
2845 return JVMTI_ERROR_NONE;
|
|
2846 } /* end IsMethodSynthetic */
|
|
2847
|
|
2848
|
|
2849 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
2850 // is_obsolete_ptr - pre-checked for NULL
|
|
2851 jvmtiError
|
|
2852 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) {
|
|
2853 if (method_oop == NULL || method_oop->is_obsolete()) {
|
|
2854 *is_obsolete_ptr = true;
|
|
2855 } else {
|
|
2856 *is_obsolete_ptr = false;
|
|
2857 }
|
|
2858 return JVMTI_ERROR_NONE;
|
|
2859 } /* end IsMethodObsolete */
|
|
2860
|
|
2861 //
|
|
2862 // Raw Monitor functions
|
|
2863 //
|
|
2864
|
|
2865 // name - pre-checked for NULL
|
|
2866 // monitor_ptr - pre-checked for NULL
|
|
2867 jvmtiError
|
|
2868 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) {
|
|
2869 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name);
|
|
2870 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
2871
|
|
2872 *monitor_ptr = (jrawMonitorID)rmonitor;
|
|
2873
|
|
2874 return JVMTI_ERROR_NONE;
|
|
2875 } /* end CreateRawMonitor */
|
|
2876
|
|
2877
|
|
2878 // rmonitor - pre-checked for validity
|
|
2879 jvmtiError
|
|
2880 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) {
|
|
2881 if (Threads::number_of_threads() == 0) {
|
|
2882 // Remove this monitor from pending raw monitors list
|
|
2883 // if it has entered in onload or start phase.
|
|
2884 JvmtiPendingMonitors::destroy(rmonitor);
|
|
2885 } else {
|
|
2886 Thread* thread = Thread::current();
|
|
2887 if (rmonitor->is_entered(thread)) {
|
|
2888 // The caller owns this monitor which we are about to destroy.
|
|
2889 // We exit the underlying synchronization object so that the
|
|
2890 // "delete monitor" call below can work without an assertion
|
|
2891 // failure on systems that don't like destroying synchronization
|
|
2892 // objects that are locked.
|
|
2893 int r;
|
|
2894 intptr_t recursion = rmonitor->recursions();
|
|
2895 for (intptr_t i=0; i <= recursion; i++) {
|
|
2896 r = rmonitor->raw_exit(thread);
|
|
2897 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
|
|
2898 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
2899 return JVMTI_ERROR_INTERNAL;
|
|
2900 }
|
|
2901 }
|
|
2902 }
|
|
2903 if (rmonitor->owner() != NULL) {
|
|
2904 // The caller is trying to destroy a monitor that is locked by
|
|
2905 // someone else. While this is not forbidden by the JVMTI
|
|
2906 // spec, it will cause an assertion failure on systems that don't
|
|
2907 // like destroying synchronization objects that are locked.
|
|
2908 // We indicate a problem with the error return (and leak the
|
|
2909 // monitor's memory).
|
|
2910 return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
2911 }
|
|
2912 }
|
|
2913
|
|
2914 delete rmonitor;
|
|
2915
|
|
2916 return JVMTI_ERROR_NONE;
|
|
2917 } /* end DestroyRawMonitor */
|
|
2918
|
|
2919
|
|
2920 // rmonitor - pre-checked for validity
|
|
2921 jvmtiError
|
|
2922 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) {
|
|
2923 if (Threads::number_of_threads() == 0) {
|
|
2924 // No JavaThreads exist so ObjectMonitor enter cannot be
|
|
2925 // used, add this raw monitor to the pending list.
|
|
2926 // The pending monitors will be actually entered when
|
|
2927 // the VM is setup.
|
|
2928 // See transition_pending_raw_monitors in create_vm()
|
|
2929 // in thread.cpp.
|
|
2930 JvmtiPendingMonitors::enter(rmonitor);
|
|
2931 } else {
|
|
2932 int r;
|
|
2933 Thread* thread = Thread::current();
|
|
2934
|
|
2935 if (thread->is_Java_thread()) {
|
|
2936 JavaThread* current_thread = (JavaThread*)thread;
|
|
2937
|
|
2938 #ifdef PROPER_TRANSITIONS
|
|
2939 // Not really unknown but ThreadInVMfromNative does more than we want
|
|
2940 ThreadInVMfromUnknown __tiv;
|
|
2941 {
|
|
2942 ThreadBlockInVM __tbivm(current_thread);
|
|
2943 r = rmonitor->raw_enter(current_thread);
|
|
2944 }
|
|
2945 #else
|
|
2946 /* Transition to thread_blocked without entering vm state */
|
|
2947 /* This is really evil. Normally you can't undo _thread_blocked */
|
|
2948 /* transitions like this because it would cause us to miss a */
|
|
2949 /* safepoint but since the thread was already in _thread_in_native */
|
|
2950 /* the thread is not leaving a safepoint safe state and it will */
|
|
2951 /* block when it tries to return from native. We can't safepoint */
|
|
2952 /* block in here because we could deadlock the vmthread. Blech. */
|
|
2953
|
|
2954 JavaThreadState state = current_thread->thread_state();
|
|
2955 assert(state == _thread_in_native, "Must be _thread_in_native");
|
|
2956 // frame should already be walkable since we are in native
|
|
2957 assert(!current_thread->has_last_Java_frame() ||
|
|
2958 current_thread->frame_anchor()->walkable(), "Must be walkable");
|
|
2959 current_thread->set_thread_state(_thread_blocked);
|
|
2960
|
|
2961 r = rmonitor->raw_enter(current_thread);
|
|
2962 // restore state, still at a safepoint safe state
|
|
2963 current_thread->set_thread_state(state);
|
|
2964
|
|
2965 #endif /* PROPER_TRANSITIONS */
|
|
2966 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked");
|
|
2967 } else {
|
|
2968 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
2969 r = rmonitor->raw_enter(thread);
|
|
2970 } else {
|
|
2971 ShouldNotReachHere();
|
|
2972 }
|
|
2973 }
|
|
2974
|
|
2975 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
2976 return JVMTI_ERROR_INTERNAL;
|
|
2977 }
|
|
2978 }
|
|
2979 return JVMTI_ERROR_NONE;
|
|
2980 } /* end RawMonitorEnter */
|
|
2981
|
|
2982
|
|
2983 // rmonitor - pre-checked for validity
|
|
2984 jvmtiError
|
|
2985 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) {
|
|
2986 jvmtiError err = JVMTI_ERROR_NONE;
|
|
2987
|
|
2988 if (Threads::number_of_threads() == 0) {
|
|
2989 // No JavaThreads exist so just remove this monitor from the pending list.
|
|
2990 // Bool value from exit is false if rmonitor is not in the list.
|
|
2991 if (!JvmtiPendingMonitors::exit(rmonitor)) {
|
|
2992 err = JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
2993 }
|
|
2994 } else {
|
|
2995 int r;
|
|
2996 Thread* thread = Thread::current();
|
|
2997
|
|
2998 if (thread->is_Java_thread()) {
|
|
2999 JavaThread* current_thread = (JavaThread*)thread;
|
|
3000 #ifdef PROPER_TRANSITIONS
|
|
3001 // Not really unknown but ThreadInVMfromNative does more than we want
|
|
3002 ThreadInVMfromUnknown __tiv;
|
|
3003 #endif /* PROPER_TRANSITIONS */
|
|
3004 r = rmonitor->raw_exit(current_thread);
|
|
3005 } else {
|
|
3006 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
3007 r = rmonitor->raw_exit(thread);
|
|
3008 } else {
|
|
3009 ShouldNotReachHere();
|
|
3010 }
|
|
3011 }
|
|
3012
|
|
3013 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
3014 err = JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
3015 } else {
|
|
3016 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
|
|
3017 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
3018 err = JVMTI_ERROR_INTERNAL;
|
|
3019 }
|
|
3020 }
|
|
3021 }
|
|
3022 return err;
|
|
3023 } /* end RawMonitorExit */
|
|
3024
|
|
3025
|
|
3026 // rmonitor - pre-checked for validity
|
|
3027 jvmtiError
|
|
3028 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) {
|
|
3029 int r;
|
|
3030 Thread* thread = Thread::current();
|
|
3031
|
|
3032 if (thread->is_Java_thread()) {
|
|
3033 JavaThread* current_thread = (JavaThread*)thread;
|
|
3034 #ifdef PROPER_TRANSITIONS
|
|
3035 // Not really unknown but ThreadInVMfromNative does more than we want
|
|
3036 ThreadInVMfromUnknown __tiv;
|
|
3037 {
|
|
3038 ThreadBlockInVM __tbivm(current_thread);
|
|
3039 r = rmonitor->raw_wait(millis, true, current_thread);
|
|
3040 }
|
|
3041 #else
|
|
3042 /* Transition to thread_blocked without entering vm state */
|
|
3043 /* This is really evil. Normally you can't undo _thread_blocked */
|
|
3044 /* transitions like this because it would cause us to miss a */
|
|
3045 /* safepoint but since the thread was already in _thread_in_native */
|
|
3046 /* the thread is not leaving a safepoint safe state and it will */
|
|
3047 /* block when it tries to return from native. We can't safepoint */
|
|
3048 /* block in here because we could deadlock the vmthread. Blech. */
|
|
3049
|
|
3050 JavaThreadState state = current_thread->thread_state();
|
|
3051 assert(state == _thread_in_native, "Must be _thread_in_native");
|
|
3052 // frame should already be walkable since we are in native
|
|
3053 assert(!current_thread->has_last_Java_frame() ||
|
|
3054 current_thread->frame_anchor()->walkable(), "Must be walkable");
|
|
3055 current_thread->set_thread_state(_thread_blocked);
|
|
3056
|
|
3057 r = rmonitor->raw_wait(millis, true, current_thread);
|
|
3058 // restore state, still at a safepoint safe state
|
|
3059 current_thread->set_thread_state(state);
|
|
3060
|
|
3061 #endif /* PROPER_TRANSITIONS */
|
|
3062 } else {
|
|
3063 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
3064 r = rmonitor->raw_wait(millis, true, thread);
|
|
3065 } else {
|
|
3066 ShouldNotReachHere();
|
|
3067 }
|
|
3068 }
|
|
3069
|
|
3070 switch (r) {
|
|
3071 case ObjectMonitor::OM_INTERRUPTED:
|
|
3072 return JVMTI_ERROR_INTERRUPT;
|
|
3073 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE:
|
|
3074 return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
3075 }
|
|
3076 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked");
|
|
3077 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
3078 return JVMTI_ERROR_INTERNAL;
|
|
3079 }
|
|
3080
|
|
3081 return JVMTI_ERROR_NONE;
|
|
3082 } /* end RawMonitorWait */
|
|
3083
|
|
3084
|
|
3085 // rmonitor - pre-checked for validity
|
|
3086 jvmtiError
|
|
3087 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) {
|
|
3088 int r;
|
|
3089 Thread* thread = Thread::current();
|
|
3090
|
|
3091 if (thread->is_Java_thread()) {
|
|
3092 JavaThread* current_thread = (JavaThread*)thread;
|
|
3093 // Not really unknown but ThreadInVMfromNative does more than we want
|
|
3094 ThreadInVMfromUnknown __tiv;
|
|
3095 r = rmonitor->raw_notify(current_thread);
|
|
3096 } else {
|
|
3097 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
3098 r = rmonitor->raw_notify(thread);
|
|
3099 } else {
|
|
3100 ShouldNotReachHere();
|
|
3101 }
|
|
3102 }
|
|
3103
|
|
3104 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
3105 return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
3106 }
|
|
3107 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked");
|
|
3108 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
3109 return JVMTI_ERROR_INTERNAL;
|
|
3110 }
|
|
3111
|
|
3112 return JVMTI_ERROR_NONE;
|
|
3113 } /* end RawMonitorNotify */
|
|
3114
|
|
3115
|
|
3116 // rmonitor - pre-checked for validity
|
|
3117 jvmtiError
|
|
3118 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) {
|
|
3119 int r;
|
|
3120 Thread* thread = Thread::current();
|
|
3121
|
|
3122 if (thread->is_Java_thread()) {
|
|
3123 JavaThread* current_thread = (JavaThread*)thread;
|
|
3124 ThreadInVMfromUnknown __tiv;
|
|
3125 r = rmonitor->raw_notifyAll(current_thread);
|
|
3126 } else {
|
|
3127 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
3128 r = rmonitor->raw_notifyAll(thread);
|
|
3129 } else {
|
|
3130 ShouldNotReachHere();
|
|
3131 }
|
|
3132 }
|
|
3133
|
|
3134 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
3135 return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
3136 }
|
|
3137 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked");
|
|
3138 if (r != ObjectMonitor::OM_OK) { // robustness
|
|
3139 return JVMTI_ERROR_INTERNAL;
|
|
3140 }
|
|
3141
|
|
3142 return JVMTI_ERROR_NONE;
|
|
3143 } /* end RawMonitorNotifyAll */
|
|
3144
|
|
3145
|
|
3146 //
|
|
3147 // JNI Function Interception functions
|
|
3148 //
|
|
3149
|
|
3150
|
|
3151 // function_table - pre-checked for NULL
|
|
3152 jvmtiError
|
|
3153 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) {
|
|
3154 // Copy jni function table at safepoint.
|
|
3155 VM_JNIFunctionTableCopier copier(function_table);
|
|
3156 VMThread::execute(&copier);
|
|
3157
|
|
3158 return JVMTI_ERROR_NONE;
|
|
3159 } /* end SetJNIFunctionTable */
|
|
3160
|
|
3161
|
|
3162 // function_table - pre-checked for NULL
|
|
3163 jvmtiError
|
|
3164 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) {
|
|
3165 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface));
|
|
3166 if (*function_table == NULL)
|
|
3167 return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
3168 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface));
|
|
3169 return JVMTI_ERROR_NONE;
|
|
3170 } /* end GetJNIFunctionTable */
|
|
3171
|
|
3172
|
|
3173 //
|
|
3174 // Event Management functions
|
|
3175 //
|
|
3176
|
|
3177 jvmtiError
|
|
3178 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) {
|
|
3179 // can only generate two event types
|
|
3180 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD &&
|
|
3181 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) {
|
|
3182 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
3183 }
|
|
3184
|
|
3185 // for compiled_method_load events we must check that the environment
|
|
3186 // has the can_generate_compiled_method_load_events capability.
|
|
3187 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) {
|
|
3188 if (get_capabilities()->can_generate_compiled_method_load_events == 0) {
|
|
3189 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
|
|
3190 }
|
|
3191 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this);
|
|
3192 } else {
|
|
3193 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this);
|
|
3194 }
|
|
3195
|
|
3196 } /* end GenerateEvents */
|
|
3197
|
|
3198
|
|
3199 //
|
|
3200 // Extension Mechanism functions
|
|
3201 //
|
|
3202
|
|
3203 // extension_count_ptr - pre-checked for NULL
|
|
3204 // extensions - pre-checked for NULL
|
|
3205 jvmtiError
|
|
3206 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) {
|
|
3207 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions);
|
|
3208 } /* end GetExtensionFunctions */
|
|
3209
|
|
3210
|
|
3211 // extension_count_ptr - pre-checked for NULL
|
|
3212 // extensions - pre-checked for NULL
|
|
3213 jvmtiError
|
|
3214 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) {
|
|
3215 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions);
|
|
3216 } /* end GetExtensionEvents */
|
|
3217
|
|
3218
|
|
3219 // callback - NULL is a valid value, must be checked
|
|
3220 jvmtiError
|
|
3221 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) {
|
|
3222 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback);
|
|
3223 } /* end SetExtensionEventCallback */
|
|
3224
|
|
3225 //
|
|
3226 // Timers functions
|
|
3227 //
|
|
3228
|
|
3229 // info_ptr - pre-checked for NULL
|
|
3230 jvmtiError
|
|
3231 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
3232 os::current_thread_cpu_time_info(info_ptr);
|
|
3233 return JVMTI_ERROR_NONE;
|
|
3234 } /* end GetCurrentThreadCpuTimerInfo */
|
|
3235
|
|
3236
|
|
3237 // nanos_ptr - pre-checked for NULL
|
|
3238 jvmtiError
|
|
3239 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) {
|
|
3240 *nanos_ptr = os::current_thread_cpu_time();
|
|
3241 return JVMTI_ERROR_NONE;
|
|
3242 } /* end GetCurrentThreadCpuTime */
|
|
3243
|
|
3244
|
|
3245 // info_ptr - pre-checked for NULL
|
|
3246 jvmtiError
|
|
3247 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
3248 os::thread_cpu_time_info(info_ptr);
|
|
3249 return JVMTI_ERROR_NONE;
|
|
3250 } /* end GetThreadCpuTimerInfo */
|
|
3251
|
|
3252
|
|
3253 // Threads_lock NOT held, java_thread not protected by lock
|
|
3254 // java_thread - pre-checked
|
|
3255 // nanos_ptr - pre-checked for NULL
|
|
3256 jvmtiError
|
|
3257 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) {
|
|
3258 *nanos_ptr = os::thread_cpu_time(java_thread);
|
|
3259 return JVMTI_ERROR_NONE;
|
|
3260 } /* end GetThreadCpuTime */
|
|
3261
|
|
3262
|
|
3263 // info_ptr - pre-checked for NULL
|
|
3264 jvmtiError
|
|
3265 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
3266 os::javaTimeNanos_info(info_ptr);
|
|
3267 return JVMTI_ERROR_NONE;
|
|
3268 } /* end GetTimerInfo */
|
|
3269
|
|
3270
|
|
3271 // nanos_ptr - pre-checked for NULL
|
|
3272 jvmtiError
|
|
3273 JvmtiEnv::GetTime(jlong* nanos_ptr) {
|
|
3274 *nanos_ptr = os::javaTimeNanos();
|
|
3275 return JVMTI_ERROR_NONE;
|
|
3276 } /* end GetTime */
|
|
3277
|
|
3278
|
|
3279 // processor_count_ptr - pre-checked for NULL
|
|
3280 jvmtiError
|
|
3281 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) {
|
|
3282 *processor_count_ptr = os::active_processor_count();
|
|
3283 return JVMTI_ERROR_NONE;
|
|
3284 } /* end GetAvailableProcessors */
|
|
3285
|
|
3286 //
|
|
3287 // System Properties functions
|
|
3288 //
|
|
3289
|
|
3290 // count_ptr - pre-checked for NULL
|
|
3291 // property_ptr - pre-checked for NULL
|
|
3292 jvmtiError
|
|
3293 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) {
|
|
3294 jvmtiError err = JVMTI_ERROR_NONE;
|
|
3295
|
|
3296 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties());
|
|
3297
|
|
3298 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr);
|
|
3299 if (err != JVMTI_ERROR_NONE) {
|
|
3300 return err;
|
|
3301 }
|
|
3302 int i = 0 ;
|
|
3303 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) {
|
|
3304 const char *key = p->key();
|
|
3305 char **tmp_value = *property_ptr+i;
|
|
3306 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value);
|
|
3307 if (err == JVMTI_ERROR_NONE) {
|
|
3308 strcpy(*tmp_value, key);
|
|
3309 } else {
|
|
3310 // clean up previously allocated memory.
|
|
3311 for (int j=0; j<i; j++) {
|
|
3312 Deallocate((unsigned char*)*property_ptr+j);
|
|
3313 }
|
|
3314 Deallocate((unsigned char*)property_ptr);
|
|
3315 break;
|
|
3316 }
|
|
3317 }
|
|
3318 return err;
|
|
3319 } /* end GetSystemProperties */
|
|
3320
|
|
3321
|
|
3322 // property - pre-checked for NULL
|
|
3323 // value_ptr - pre-checked for NULL
|
|
3324 jvmtiError
|
|
3325 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) {
|
|
3326 jvmtiError err = JVMTI_ERROR_NONE;
|
|
3327 const char *value;
|
|
3328
|
|
3329 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property);
|
|
3330 if (value == NULL) {
|
|
3331 err = JVMTI_ERROR_NOT_AVAILABLE;
|
|
3332 } else {
|
|
3333 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr);
|
|
3334 if (err == JVMTI_ERROR_NONE) {
|
|
3335 strcpy(*value_ptr, value);
|
|
3336 }
|
|
3337 }
|
|
3338 return err;
|
|
3339 } /* end GetSystemProperty */
|
|
3340
|
|
3341
|
|
3342 // property - pre-checked for NULL
|
|
3343 // value - NULL is a valid value, must be checked
|
|
3344 jvmtiError
|
|
3345 JvmtiEnv::SetSystemProperty(const char* property, const char* value) {
|
|
3346 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE;
|
|
3347
|
|
3348 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
|
|
3349 if (strcmp(property, p->key()) == 0) {
|
|
3350 if (p->set_value((char *)value)) {
|
|
3351 err = JVMTI_ERROR_NONE;
|
|
3352 }
|
|
3353 }
|
|
3354 }
|
|
3355 return err;
|
|
3356 } /* end SetSystemProperty */
|
|
3357
|
|
3358 #endif // !JVMTI_KERNEL
|