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annotate src/share/vm/prims/whitebox.cpp @ 9056:3b890cd4da64

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8009125: Add NMT tests for Virtual Memory operations Summary: Tests added for Reserve/Commit/Uncommit/Unreserve operations Reviewed-by: zgu, mgerdin
author ctornqvi
date Wed, 03 Apr 2013 21:41:33 +0200
parents ede380e13960
children 7a5aec879506
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26
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27 #include "memory/universe.hpp"
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28 #include "oops/oop.inline.hpp"
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29
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30 #include "classfile/symbolTable.hpp"
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31 #include "classfile/classLoaderData.hpp"
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32
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33 #include "prims/whitebox.hpp"
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34 #include "prims/wbtestmethods/parserTests.hpp"
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35
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36 #include "runtime/interfaceSupport.hpp"
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37 #include "runtime/os.hpp"
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38 #include "utilities/debug.hpp"
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39 #include "utilities/macros.hpp"
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40
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41 #if INCLUDE_ALL_GCS
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42 #include "gc_implementation/g1/concurrentMark.hpp"
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43 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
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44 #include "gc_implementation/g1/heapRegionRemSet.hpp"
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45 #endif // INCLUDE_ALL_GCS
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46
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47 #ifdef INCLUDE_NMT
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48 #include "services/memTracker.hpp"
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49 #endif // INCLUDE_NMT
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50
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51 #include "compiler/compileBroker.hpp"
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52
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53 bool WhiteBox::_used = false;
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54
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55 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
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56 return (jlong)(void*)JNIHandles::resolve(obj);
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57 WB_END
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58
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59 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
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60 return heapOopSize;
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61 WB_END
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62
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63
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64 class WBIsKlassAliveClosure : public KlassClosure {
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65 Symbol* _name;
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66 bool _found;
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67 public:
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68 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
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69
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70 void do_klass(Klass* k) {
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71 if (_found) return;
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72 Symbol* ksym = k->name();
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73 if (ksym->fast_compare(_name) == 0) {
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74 _found = true;
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75 }
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76 }
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77
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78 bool found() const {
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79 return _found;
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80 }
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81 };
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82
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83 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
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84 Handle h_name = JNIHandles::resolve(name);
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85 if (h_name.is_null()) return false;
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86 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
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87 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
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88
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89 WBIsKlassAliveClosure closure(sym);
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90 ClassLoaderDataGraph::classes_do(&closure);
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91
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92 return closure.found();
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93 WB_END
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94
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95 #if INCLUDE_ALL_GCS
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96 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
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97 G1CollectedHeap* g1 = G1CollectedHeap::heap();
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98 oop result = JNIHandles::resolve(obj);
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99 const HeapRegion* hr = g1->heap_region_containing(result);
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100 return hr->isHumongous();
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101 WB_END
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102
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103 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
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104 G1CollectedHeap* g1 = G1CollectedHeap::heap();
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105 size_t nr = g1->free_regions();
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106 return (jlong)nr;
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107 WB_END
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108
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109 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
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110 G1CollectedHeap* g1 = G1CollectedHeap::heap();
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111 ConcurrentMark* cm = g1->concurrent_mark();
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112 return cm->concurrent_marking_in_progress();
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113 WB_END
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114
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115 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
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116 return (jint)HeapRegion::GrainBytes;
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117 WB_END
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118 #endif // INCLUDE_ALL_GCS
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119
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120 #ifdef INCLUDE_NMT
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121 // Alloc memory using the test memory type so that we can use that to see if
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122 // NMT picks it up correctly
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123 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
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124 jlong addr = 0;
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125
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126 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
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127 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
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128 }
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129
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130 return addr;
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131 WB_END
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132
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133 // Free the memory allocated by NMTAllocTest
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134 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
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135 os::free((void*)(uintptr_t)mem, mtTest);
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136 WB_END
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137
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138 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
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139 jlong addr = 0;
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140
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141 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
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142 addr = (jlong)(uintptr_t)os::reserve_memory(size);
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143 MemTracker::record_virtual_memory_type((address)addr, mtTest);
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144 }
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145
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146 return addr;
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147 WB_END
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148
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149
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150 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
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151 os::commit_memory((char *)(uintptr_t)addr, size);
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152 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
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153 WB_END
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154
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155 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
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156 os::uncommit_memory((char *)(uintptr_t)addr, size);
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157 WB_END
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158
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159 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
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160 os::release_memory((char *)(uintptr_t)addr, size);
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161 WB_END
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162
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163 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature
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164 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env))
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165
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166 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) {
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167 return false;
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168 }
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169
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170 return MemTracker::wbtest_wait_for_data_merge();
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171 WB_END
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172
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173 #endif // INCLUDE_NMT
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174
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175 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
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176 assert(method != NULL, "method should not be null");
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177 ThreadToNativeFromVM ttn(thread);
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178 return env->FromReflectedMethod(method);
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179 }
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180
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181 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
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182 MutexLockerEx mu(Compile_lock);
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183 CodeCache::mark_all_nmethods_for_deoptimization();
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184 VM_Deoptimize op;
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185 VMThread::execute(&op);
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186 WB_END
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187
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188 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method))
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189 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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190 MutexLockerEx mu(Compile_lock);
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191 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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192 int result = 0;
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193 nmethod* code = mh->code();
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194 if (code != NULL) {
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195 code->mark_for_deoptimization();
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196 ++result;
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197 }
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198 result += CodeCache::mark_for_deoptimization(mh());
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199 if (result > 0) {
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200 VM_Deoptimize op;
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201 VMThread::execute(&op);
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202 }
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203 return result;
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204 WB_END
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205
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206 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method))
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207 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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208 MutexLockerEx mu(Compile_lock);
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209 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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210 nmethod* code = mh->code();
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211 if (code == NULL) {
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212 return JNI_FALSE;
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213 }
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214 return (code->is_alive() && !code->is_marked_for_deoptimization());
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215 WB_END
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216
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217 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method))
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218 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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219 MutexLockerEx mu(Compile_lock);
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220 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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221 return !mh->is_not_compilable();
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222 WB_END
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223
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224 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
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225 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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226 MutexLockerEx mu(Compile_lock);
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227 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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228 return mh->queued_for_compilation();
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229 WB_END
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230
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231 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method))
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232 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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233 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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234 nmethod* code = mh->code();
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235 return (code != NULL ? code->comp_level() : CompLevel_none);
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236 WB_END
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237
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238
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239 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method))
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240 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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241 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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242 mh->set_not_compilable();
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243 WB_END
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244
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245 WB_ENTRY(jboolean, WB_SetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
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246 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
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diff changeset
247 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
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248 bool result = mh->dont_inline();
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249 mh->set_dont_inline(value == JNI_TRUE);
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250 return result;
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251 WB_END
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diff changeset
252
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253 WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o))
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diff changeset
254 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
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255 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
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256 WB_END
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257
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258 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
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259 ResourceMark rm(THREAD);
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260 int len;
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261 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len);
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262 oop found_string = StringTable::the_table()->lookup(name, len);
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263 if (found_string == NULL) {
ede380e13960 8009763: Add WB test for String.intern()
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diff changeset
264 return false;
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265 }
ede380e13960 8009763: Add WB test for String.intern()
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266 return true;
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267 WB_END
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268
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269
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diff changeset
270 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
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271 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
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272 Universe::heap()->collect(GCCause::_last_ditch_collection);
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273 WB_END
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274
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275
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276 //Some convenience methods to deal with objects from java
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277 int WhiteBox::offset_for_field(const char* field_name, oop object,
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278 Symbol* signature_symbol) {
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279 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
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280 Thread* THREAD = Thread::current();
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281
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282 //Get the class of our object
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283 Klass* arg_klass = object->klass();
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284 //Turn it into an instance-klass
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285 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
5978
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286
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287 //Create symbols to look for in the class
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288 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
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289 THREAD);
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290
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291 //To be filled in with an offset of the field we're looking for
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292 fieldDescriptor fd;
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293
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294 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
5978
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295 if (res == NULL) {
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296 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
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297 name_symbol->as_C_string());
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298 fatal("Invalid layout of preloaded class");
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299 }
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300
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diff changeset
301 //fetch the field at the offset we've found
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302 int dest_offset = fd.offset();
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diff changeset
303
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304 return dest_offset;
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diff changeset
305 }
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diff changeset
306
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diff changeset
307
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diff changeset
308 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
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309 int offset = offset_for_field(field_name, object,
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diff changeset
310 vmSymbols::string_signature());
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311 oop string = object->obj_field(offset);
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312 if (string == NULL) {
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313 return NULL;
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314 }
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315 const char* ret = java_lang_String::as_utf8_string(string);
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316 return ret;
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317 }
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318
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319 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
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320 int offset =
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321 offset_for_field(field_name, object, vmSymbols::bool_signature());
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322 bool ret = (object->bool_field(offset) == JNI_TRUE);
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323 return ret;
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324 }
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325
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326
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327 #define CC (char*)
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328
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329 static JNINativeMethod methods[] = {
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330 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
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331 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
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332 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
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333 {CC"parseCommandLine",
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334 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
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335 (void*) &WB_ParseCommandLine
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336 },
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337 #if INCLUDE_ALL_GCS
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338 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
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339 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
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340 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
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341 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
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342 #endif // INCLUDE_ALL_GCS
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343 #ifdef INCLUDE_NMT
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344 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
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345 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
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346 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
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347 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
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348 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
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349 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
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350 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge},
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351 #endif // INCLUDE_NMT
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352 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
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353 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Method;)I",
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354 (void*)&WB_DeoptimizeMethod },
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355 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Method;)Z",
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356 (void*)&WB_IsMethodCompiled },
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357 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Method;)Z",
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358 (void*)&WB_IsMethodCompilable},
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359 {CC"isMethodQueuedForCompilation",
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360 CC"(Ljava/lang/reflect/Method;)Z", (void*)&WB_IsMethodQueuedForCompilation},
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361 {CC"makeMethodNotCompilable",
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362 CC"(Ljava/lang/reflect/Method;)V", (void*)&WB_MakeMethodNotCompilable},
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363 {CC"setDontInlineMethod",
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364 CC"(Ljava/lang/reflect/Method;Z)Z", (void*)&WB_SetDontInlineMethod},
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365 {CC"getMethodCompilationLevel",
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366 CC"(Ljava/lang/reflect/Method;)I", (void*)&WB_GetMethodCompilationLevel},
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367 {CC"getCompileQueuesSize",
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368 CC"()I", (void*)&WB_GetCompileQueuesSize},
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369 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
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370 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
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371 };
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372
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373 #undef CC
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374
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375 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
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376 {
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377 if (WhiteBoxAPI) {
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378 // Make sure that wbclass is loaded by the null classloader
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379 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
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380 Handle loader(ikh->class_loader());
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381 if (loader.is_null()) {
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382 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
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383 jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0]));
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384 if (result == 0) {
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385 WhiteBox::set_used();
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386 }
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387 }
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388 }
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389 }
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390 JVM_END