Mercurial > hg > truffle
annotate src/share/vm/prims/whitebox.cpp @ 20667:887a7cedb892
8064701: Some CDS optimizations should be disabled if bootclasspath is modified by JVMTI
Summary: Added API to track bootclasspath modification
Reviewed-by: jiangli, dholmes, minqi
author | iklam |
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date | Tue, 18 Nov 2014 03:38:50 -0800 |
parents | 787c9c28311f |
children | c80ddae00f51 |
rev | line source |
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5915 | 1 /* |
17817 | 2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. |
5915 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #include "precompiled.hpp" | |
26 | |
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27 #include "memory/metadataFactory.hpp" |
5915 | 28 #include "memory/universe.hpp" |
29 #include "oops/oop.inline.hpp" | |
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30 |
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31 #include "classfile/symbolTable.hpp" |
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32 #include "classfile/classLoaderData.hpp" |
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33 |
5915 | 34 #include "prims/whitebox.hpp" |
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35 #include "prims/wbtestmethods/parserTests.hpp" |
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36 |
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37 #include "runtime/arguments.hpp" |
5915 | 38 #include "runtime/interfaceSupport.hpp" |
39 #include "runtime/os.hpp" | |
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40 #include "utilities/array.hpp" |
5915 | 41 #include "utilities/debug.hpp" |
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42 #include "utilities/macros.hpp" |
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43 #include "utilities/exceptions.hpp" |
5915 | 44 |
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45 #if INCLUDE_ALL_GCS |
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46 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
5915 | 47 #include "gc_implementation/g1/concurrentMark.hpp" |
48 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
49 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
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50 #endif // INCLUDE_ALL_GCS |
5915 | 51 |
20360 | 52 #if INCLUDE_NMT |
53 #include "services/mallocSiteTable.hpp" | |
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54 #include "services/memTracker.hpp" |
20360 | 55 #include "utilities/nativeCallStack.hpp" |
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56 #endif // INCLUDE_NMT |
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57 |
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58 #include "compiler/compileBroker.hpp" |
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59 #include "jvmtifiles/jvmtiEnv.hpp" |
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60 #include "runtime/compilationPolicy.hpp" |
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61 |
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62 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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63 |
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64 #define SIZE_T_MAX_VALUE ((size_t) -1) |
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65 |
5915 | 66 bool WhiteBox::_used = false; |
67 | |
68 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
69 return (jlong)(void*)JNIHandles::resolve(obj); | |
70 WB_END | |
71 | |
72 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
73 return heapOopSize; | |
74 WB_END | |
75 | |
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76 |
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77 class WBIsKlassAliveClosure : public KlassClosure { |
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78 Symbol* _name; |
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79 bool _found; |
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80 public: |
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81 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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82 |
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83 void do_klass(Klass* k) { |
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84 if (_found) return; |
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85 Symbol* ksym = k->name(); |
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86 if (ksym->fast_compare(_name) == 0) { |
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87 _found = true; |
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88 } |
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89 } |
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90 |
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91 bool found() const { |
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92 return _found; |
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93 } |
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94 }; |
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95 |
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96 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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97 Handle h_name = JNIHandles::resolve(name); |
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98 if (h_name.is_null()) return false; |
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99 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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100 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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101 |
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102 WBIsKlassAliveClosure closure(sym); |
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103 ClassLoaderDataGraph::classes_do(&closure); |
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104 |
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105 return closure.found(); |
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106 WB_END |
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107 |
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108 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name)) |
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109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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110 const char* class_name = env->GetStringUTFChars(name, NULL); |
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111 jboolean result = JVM_KnownToNotExist(env, loader, class_name); |
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112 env->ReleaseStringUTFChars(name, class_name); |
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113 return result; |
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114 WB_END |
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115 |
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116 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader)) |
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117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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118 return JVM_GetResourceLookupCacheURLs(env, loader); |
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119 WB_END |
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120 |
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121 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name)) |
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122 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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123 const char* resource_name = env->GetStringUTFChars(name, NULL); |
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124 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name); |
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125 |
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126 env->ReleaseStringUTFChars(name, resource_name); |
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127 return result; |
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128 WB_END |
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129 |
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130 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { |
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131 #if INCLUDE_JVMTI |
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132 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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133 const char* seg = env->GetStringUTFChars(segment, NULL); |
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134 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); |
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135 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); |
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136 assert(err == JVMTI_ERROR_NONE, "must not fail"); |
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137 env->ReleaseStringUTFChars(segment, seg); |
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138 #endif |
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139 } |
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140 WB_END |
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141 |
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142 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { |
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143 #if INCLUDE_JVMTI |
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144 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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145 const char* seg = env->GetStringUTFChars(segment, NULL); |
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146 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); |
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147 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); |
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148 assert(err == JVMTI_ERROR_NONE, "must not fail"); |
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149 env->ReleaseStringUTFChars(segment, seg); |
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150 #endif |
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151 } |
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152 WB_END |
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153 |
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154 |
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155 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { |
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156 return (jlong)Arguments::max_heap_for_compressed_oops(); |
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157 } |
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158 WB_END |
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159 |
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160 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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161 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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162 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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163 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, |
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164 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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165 p->space_alignment(), p->heap_alignment()); |
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166 } |
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167 WB_END |
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168 |
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169 #ifndef PRODUCT |
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170 // Forward declaration |
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171 void TestReservedSpace_test(); |
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172 void TestReserveMemorySpecial_test(); |
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173 void TestVirtualSpace_test(); |
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174 void TestMetaspaceAux_test(); |
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175 #endif |
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176 |
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177 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) |
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178 #ifndef PRODUCT |
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179 TestReservedSpace_test(); |
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180 TestReserveMemorySpecial_test(); |
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181 TestVirtualSpace_test(); |
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182 TestMetaspaceAux_test(); |
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183 #endif |
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184 WB_END |
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185 |
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186 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) |
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187 size_t granularity = os::vm_allocation_granularity(); |
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188 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL); |
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189 VirtualSpace vs; |
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190 vs.initialize(rhs, 50 * granularity); |
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191 |
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192 //Check if constraints are complied |
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193 if (!( UseCompressedOops && rhs.base() != NULL && |
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194 Universe::narrow_oop_base() != NULL && |
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195 Universe::narrow_oop_use_implicit_null_checks() )) { |
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196 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " |
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197 "\tUseCompressedOops is %d\n" |
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198 "\trhs.base() is "PTR_FORMAT"\n" |
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199 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n" |
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200 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", |
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201 UseCompressedOops, |
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202 rhs.base(), |
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203 Universe::narrow_oop_base(), |
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204 Universe::narrow_oop_use_implicit_null_checks()); |
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205 return; |
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206 } |
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207 tty->print_cr("Reading from no access area... "); |
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208 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", |
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209 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); |
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210 WB_END |
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211 |
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212 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, |
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213 size_t magnitude, size_t iterations) { |
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214 size_t granularity = os::vm_allocation_granularity(); |
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215 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL); |
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216 VirtualSpace vs; |
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217 if (!vs.initialize(rhs, 0)) { |
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218 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); |
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219 return 3; |
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220 } |
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221 |
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222 long seed = os::random(); |
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223 tty->print_cr("Random seed is %ld", seed); |
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224 os::init_random(seed); |
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225 |
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226 for (size_t i = 0; i < iterations; i++) { |
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227 |
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228 // Whether we will shrink or grow |
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229 bool shrink = os::random() % 2L == 0; |
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230 |
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231 // Get random delta to resize virtual space |
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232 size_t delta = (size_t)os::random() % magnitude; |
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233 |
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234 // If we are about to shrink virtual space below zero, then expand instead |
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235 if (shrink && vs.committed_size() < delta) { |
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236 shrink = false; |
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237 } |
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238 |
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239 // Resizing by delta |
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240 if (shrink) { |
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241 vs.shrink_by(delta); |
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242 } else { |
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243 // If expanding fails expand_by will silently return false |
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244 vs.expand_by(delta, true); |
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245 } |
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246 } |
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247 return 0; |
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248 } |
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249 |
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250 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, |
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251 jlong reserved_space_size, jlong magnitude, jlong iterations)) |
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252 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", " |
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253 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude, |
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254 iterations); |
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255 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { |
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256 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); |
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257 return 1; |
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258 } |
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259 |
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260 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is |
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261 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. |
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262 if (sizeof(size_t) < sizeof(jlong)) { |
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263 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; |
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264 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value |
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265 || iterations > size_t_max_value) { |
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266 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); |
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267 return 2; |
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268 } |
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269 } |
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270 |
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271 return wb_stress_virtual_space_resize((size_t) reserved_space_size, |
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272 (size_t) magnitude, (size_t) iterations); |
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273 WB_END |
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274 |
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275 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) |
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276 oop p = JNIHandles::resolve(obj); |
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277 #if INCLUDE_ALL_GCS |
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278 if (UseG1GC) { |
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279 G1CollectedHeap* g1 = G1CollectedHeap::heap(); |
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280 const HeapRegion* hr = g1->heap_region_containing(p); |
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281 if (hr == NULL) { |
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282 return false; |
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283 } |
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284 return !(hr->is_young()); |
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285 } else if (UseParallelGC) { |
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286 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); |
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287 return !psh->is_in_young(p); |
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288 } |
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289 #endif // INCLUDE_ALL_GCS |
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290 GenCollectedHeap* gch = GenCollectedHeap::heap(); |
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291 return !gch->is_in_young(p); |
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292 WB_END |
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293 |
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294 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) |
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295 oop p = JNIHandles::resolve(obj); |
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296 return p->size() * HeapWordSize; |
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297 WB_END |
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298 |
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299 #if INCLUDE_ALL_GCS |
5915 | 300 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
301 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
302 oop result = JNIHandles::resolve(obj); | |
303 const HeapRegion* hr = g1->heap_region_containing(result); | |
304 return hr->isHumongous(); | |
305 WB_END | |
306 | |
307 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
308 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
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309 size_t nr = g1->num_free_regions(); |
5915 | 310 return (jlong)nr; |
311 WB_END | |
312 | |
313 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
314 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
315 ConcurrentMark* cm = g1->concurrent_mark(); | |
316 return cm->concurrent_marking_in_progress(); | |
317 WB_END | |
318 | |
319 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
320 return (jint)HeapRegion::GrainBytes; | |
321 WB_END | |
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322 #endif // INCLUDE_ALL_GCS |
5915 | 323 |
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324 #if INCLUDE_NMT |
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325 // Alloc memory using the test memory type so that we can use that to see if |
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326 // NMT picks it up correctly |
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327 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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328 jlong addr = 0; |
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329 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
20360 | 330 return addr; |
331 WB_END | |
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332 |
20360 | 333 // Alloc memory with pseudo call stack. The test can create psudo malloc |
334 // allocation site to stress the malloc tracking. | |
335 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) | |
336 address pc = (address)(size_t)pseudo_stack; | |
337 NativeCallStack stack(&pc, 1); | |
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338 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); |
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339 WB_END |
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340 |
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341 // Free the memory allocated by NMTAllocTest |
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342 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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343 os::free((void*)(uintptr_t)mem, mtTest); |
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344 WB_END |
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345 |
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346 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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347 jlong addr = 0; |
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348 |
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349 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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350 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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351 |
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352 return addr; |
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353 WB_END |
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354 |
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355 |
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356 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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357 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); |
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358 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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359 WB_END |
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360 |
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361 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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362 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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363 WB_END |
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364 |
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365 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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366 os::release_memory((char *)(uintptr_t)addr, size); |
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367 WB_END |
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368 |
20360 | 369 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) |
370 return MemTracker::tracking_level() == NMT_detail; | |
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371 WB_END |
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372 |
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373 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) |
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374 // Test that we can downgrade NMT levels but not upgrade them. |
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375 if (MemTracker::tracking_level() == NMT_off) { |
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376 MemTracker::transition_to(NMT_off); |
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377 return MemTracker::tracking_level() == NMT_off; |
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378 } else { |
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379 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); |
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380 MemTracker::transition_to(NMT_summary); |
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381 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); |
20360 | 382 |
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383 // Can't go to detail once NMT is set to summary. |
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384 MemTracker::transition_to(NMT_detail); |
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385 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); |
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386 |
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387 // Shutdown sets tracking level to minimal. |
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388 MemTracker::shutdown(); |
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389 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); |
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390 |
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391 // Once the tracking level is minimal, we cannot increase to summary. |
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392 // The code ignores this request instead of asserting because if the malloc site |
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393 // table overflows in another thread, it tries to change the code to summary. |
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394 MemTracker::transition_to(NMT_summary); |
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395 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); |
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396 |
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397 // Really can never go up to detail, verify that the code would never do this. |
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398 MemTracker::transition_to(NMT_detail); |
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399 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); |
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400 return MemTracker::tracking_level() == NMT_minimal; |
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401 } |
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402 WB_END |
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403 |
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404 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) |
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405 int hash_size = MallocSiteTable::hash_buckets(); |
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406 assert(hash_size > 0, "NMT hash_size should be > 0"); |
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407 return (jint)hash_size; |
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408 WB_END |
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409 #endif // INCLUDE_NMT |
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410 |
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411 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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412 assert(method != NULL, "method should not be null"); |
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413 ThreadToNativeFromVM ttn(thread); |
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414 return env->FromReflectedMethod(method); |
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415 } |
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416 |
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417 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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418 MutexLockerEx mu(Compile_lock); |
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419 CodeCache::mark_all_nmethods_for_deoptimization(); |
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420 VM_Deoptimize op; |
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421 VMThread::execute(&op); |
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422 WB_END |
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423 |
12073 | 424 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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425 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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426 int result = 0; |
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427 CHECK_JNI_EXCEPTION_(env, result); |
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428 MutexLockerEx mu(Compile_lock); |
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429 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 430 if (is_osr) { |
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431 result += mh->mark_osr_nmethods(); |
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432 } else if (mh->code() != NULL) { |
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433 mh->code()->mark_for_deoptimization(); |
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434 ++result; |
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435 } |
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436 result += CodeCache::mark_for_deoptimization(mh()); |
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437 if (result > 0) { |
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438 VM_Deoptimize op; |
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439 VMThread::execute(&op); |
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440 } |
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441 return result; |
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442 WB_END |
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443 |
12073 | 444 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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445 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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446 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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447 MutexLockerEx mu(Compile_lock); |
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448 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 449 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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450 if (code == NULL) { |
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451 return JNI_FALSE; |
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452 } |
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453 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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454 WB_END |
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455 |
12073 | 456 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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457 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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458 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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459 MutexLockerEx mu(Compile_lock); |
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460 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 461 if (is_osr) { |
462 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); | |
463 } else { | |
464 return CompilationPolicy::can_be_compiled(mh, comp_level); | |
465 } | |
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466 WB_END |
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467 |
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468 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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469 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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470 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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471 MutexLockerEx mu(Compile_lock); |
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472 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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473 return mh->queued_for_compilation(); |
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474 WB_END |
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475 |
12073 | 476 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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477 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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478 CHECK_JNI_EXCEPTION_(env, CompLevel_none); |
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479 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 480 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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481 return (code != NULL ? code->comp_level() : CompLevel_none); |
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482 WB_END |
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483 |
12073 | 484 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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485 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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486 CHECK_JNI_EXCEPTION(env); |
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487 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 488 if (is_osr) { |
489 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); | |
490 } else { | |
491 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); | |
492 } | |
493 WB_END | |
494 | |
495 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) | |
496 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
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497 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); |
12073 | 498 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
499 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); | |
500 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); | |
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501 WB_END |
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502 |
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503 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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504 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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505 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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506 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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507 bool result = mh->dont_inline(); |
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508 mh->set_dont_inline(value == JNI_TRUE); |
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509 return result; |
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510 WB_END |
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511 |
12073 | 512 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) |
513 if (comp_level == CompLevel_any) { | |
514 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + | |
515 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; | |
516 } else { | |
517 return CompileBroker::queue_size(comp_level); | |
518 } | |
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519 WB_END |
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520 |
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521 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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522 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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523 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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524 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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525 bool result = mh->force_inline(); |
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526 mh->set_force_inline(value == JNI_TRUE); |
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527 return result; |
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528 WB_END |
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529 |
12073 | 530 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) |
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531 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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532 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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533 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 534 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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535 MutexLockerEx mu(Compile_lock); |
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536 return (mh->queued_for_compilation() || nm != NULL); |
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537 WB_END |
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538 |
17867 | 539 class VM_WhiteBoxOperation : public VM_Operation { |
540 public: | |
541 VM_WhiteBoxOperation() { } | |
542 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } | |
543 bool allow_nested_vm_operations() const { return true; } | |
544 }; | |
545 | |
546 class AlwaysFalseClosure : public BoolObjectClosure { | |
547 public: | |
548 bool do_object_b(oop p) { return false; } | |
549 }; | |
550 | |
551 static AlwaysFalseClosure always_false; | |
552 | |
553 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation { | |
554 public: | |
555 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { } | |
556 void doit() { | |
557 _mdo->clean_method_data(&always_false); | |
558 } | |
559 private: | |
560 MethodData* _mdo; | |
561 }; | |
562 | |
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563 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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564 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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565 CHECK_JNI_EXCEPTION(env); |
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566 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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567 MutexLockerEx mu(Compile_lock); |
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568 MethodData* mdo = mh->method_data(); |
10107 | 569 MethodCounters* mcs = mh->method_counters(); |
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570 |
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571 if (mdo != NULL) { |
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572 mdo->init(); |
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573 ResourceMark rm; |
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574 int arg_count = mdo->method()->size_of_parameters(); |
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575 for (int i = 0; i < arg_count; i++) { |
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576 mdo->set_arg_modified(i, 0); |
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577 } |
17867 | 578 VM_WhiteBoxCleanMethodData op(mdo); |
579 VMThread::execute(&op); | |
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580 } |
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581 |
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582 mh->clear_not_c1_compilable(); |
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583 mh->clear_not_c2_compilable(); |
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584 mh->clear_not_c2_osr_compilable(); |
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585 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 586 if (mcs != NULL) { |
587 mcs->backedge_counter()->init(); | |
588 mcs->invocation_counter()->init(); | |
589 mcs->set_interpreter_invocation_count(0); | |
590 mcs->set_interpreter_throwout_count(0); | |
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591 |
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592 #ifdef TIERED |
10107 | 593 mcs->set_rate(0.0F); |
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594 mh->set_prev_event_count(0); |
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595 mh->set_prev_time(0); |
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596 #endif |
10107 | 597 } |
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598 WB_END |
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599 |
20249 | 600 template <typename T> |
601 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) { | |
602 if (name == NULL) { | |
603 return false; | |
604 } | |
605 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
606 const char* flag_name = env->GetStringUTFChars(name, NULL); | |
607 bool result = (*TAt)(flag_name, value); | |
608 env->ReleaseStringUTFChars(name, flag_name); | |
609 return result; | |
610 } | |
611 | |
612 template <typename T> | |
613 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) { | |
614 if (name == NULL) { | |
615 return false; | |
616 } | |
617 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
618 const char* flag_name = env->GetStringUTFChars(name, NULL); | |
619 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL); | |
620 env->ReleaseStringUTFChars(name, flag_name); | |
621 return result; | |
622 } | |
623 | |
624 template <typename T> | |
625 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { | |
626 ResourceMark rm(thread); | |
627 jclass clazz = env->FindClass(name->as_C_string()); | |
628 CHECK_JNI_EXCEPTION_(env, NULL); | |
629 jmethodID methodID = env->GetStaticMethodID(clazz, | |
630 vmSymbols::valueOf_name()->as_C_string(), | |
631 sig->as_C_string()); | |
632 CHECK_JNI_EXCEPTION_(env, NULL); | |
633 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); | |
634 CHECK_JNI_EXCEPTION_(env, NULL); | |
635 return result; | |
636 } | |
637 | |
638 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { | |
639 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); | |
640 } | |
641 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { | |
642 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); | |
643 } | |
644 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { | |
645 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); | |
646 } | |
647 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { | |
648 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); | |
649 }*/ | |
650 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { | |
651 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); | |
652 } | |
653 | |
654 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) | |
655 bool result; | |
656 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { | |
657 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
658 return booleanBox(thread, env, result); | |
659 } | |
660 return NULL; | |
661 WB_END | |
662 | |
663 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) | |
664 intx result; | |
665 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { | |
666 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
667 return longBox(thread, env, result); | |
668 } | |
669 return NULL; | |
670 WB_END | |
671 | |
672 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) | |
673 uintx result; | |
674 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { | |
675 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
676 return longBox(thread, env, result); | |
677 } | |
678 return NULL; | |
679 WB_END | |
680 | |
681 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) | |
682 uint64_t result; | |
683 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { | |
684 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
685 return longBox(thread, env, result); | |
686 } | |
687 return NULL; | |
688 WB_END | |
689 | |
690 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) | |
691 double result; | |
692 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { | |
693 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
694 return doubleBox(thread, env, result); | |
695 } | |
696 return NULL; | |
697 WB_END | |
698 | |
699 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) | |
700 ccstr ccstrResult; | |
701 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { | |
702 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
703 jstring result = env->NewStringUTF(ccstrResult); | |
704 CHECK_JNI_EXCEPTION_(env, NULL); | |
705 return result; | |
706 } | |
707 return NULL; | |
708 WB_END | |
709 | |
710 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) | |
711 bool result = value == JNI_TRUE ? true : false; | |
712 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); | |
713 WB_END | |
714 | |
715 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
716 intx result = value; | |
717 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); | |
718 WB_END | |
719 | |
720 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
721 uintx result = value; | |
722 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); | |
723 WB_END | |
724 | |
725 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
726 uint64_t result = value; | |
727 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); | |
728 WB_END | |
729 | |
730 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) | |
731 double result = value; | |
732 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); | |
733 WB_END | |
734 | |
735 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) | |
736 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
737 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); | |
738 ccstr ccstrResult = ccstrValue; | |
739 bool needFree; | |
740 { | |
741 ThreadInVMfromNative ttvfn(thread); // back to VM | |
742 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); | |
743 } | |
744 if (value != NULL) { | |
745 env->ReleaseStringUTFChars(value, ccstrValue); | |
746 } | |
747 if (needFree) { | |
748 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal); | |
749 } | |
750 WB_END | |
751 | |
752 | |
8850 | 753 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
754 ResourceMark rm(THREAD); | |
755 int len; | |
10155
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756 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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757 return (StringTable::lookup(name, len) != NULL); |
8850 | 758 WB_END |
759 | |
760 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
761 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
762 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
20451 | 763 #if INCLUDE_ALL_GCS |
764 if (UseG1GC) { | |
765 // Needs to be cleared explicitly for G1 | |
766 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); | |
767 } | |
768 #endif // INCLUDE_ALL_GCS | |
8850 | 769 WB_END |
770 | |
20357
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771 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) |
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772 Universe::heap()->collect(GCCause::_wb_young_gc); |
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773 WB_END |
10157 | 774 |
10341
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775 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) |
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776 // static+volatile in order to force the read to happen |
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777 // (not be eliminated by the compiler) |
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778 static char c; |
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779 static volatile char* p; |
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780 |
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781 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); |
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782 if (p == NULL) { |
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783 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); |
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784 } |
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785 |
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786 c = *p; |
10157 | 787 WB_END |
788 | |
17778
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789 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) |
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790 const char* cpu_features = VM_Version::cpu_features(); |
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791 ThreadToNativeFromVM ttn(thread); |
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792 jstring features_string = env->NewStringUTF(cpu_features); |
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793 |
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794 CHECK_JNI_EXCEPTION_(env, NULL); |
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8035857: Add tests to verify correctness of operations with BMI1 and LZCNT instructions
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795 |
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796 return features_string; |
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|
797 WB_END |
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798 |
17817 | 799 |
800 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) | |
801 ResourceMark rm(THREAD); | |
802 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
803 CHECK_JNI_EXCEPTION_(env, NULL); | |
804 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); | |
805 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); | |
806 jobjectArray result = NULL; | |
807 if (code == NULL) { | |
808 return result; | |
809 } | |
810 int insts_size = code->insts_size(); | |
811 | |
812 ThreadToNativeFromVM ttn(thread); | |
813 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); | |
814 CHECK_JNI_EXCEPTION_(env, NULL); | |
815 result = env->NewObjectArray(2, clazz, NULL); | |
816 if (result == NULL) { | |
817 return result; | |
818 } | |
819 | |
20249 | 820 jobject obj = integerBox(thread, env, code->comp_level()); |
17817 | 821 CHECK_JNI_EXCEPTION_(env, NULL); |
822 env->SetObjectArrayElement(result, 0, obj); | |
823 | |
824 jbyteArray insts = env->NewByteArray(insts_size); | |
825 CHECK_JNI_EXCEPTION_(env, NULL); | |
826 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); | |
827 env->SetObjectArrayElement(result, 1, insts); | |
828 | |
829 return result; | |
830 WB_END | |
831 | |
832 | |
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833 int WhiteBox::array_bytes_to_length(size_t bytes) { |
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834 return Array<u1>::bytes_to_length(bytes); |
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|
835 } |
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|
836 |
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837 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) |
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838 if (size < 0) { |
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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839 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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840 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); |
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|
841 } |
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|
842 |
2c6ef90f030a
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843 oop class_loader_oop = JNIHandles::resolve(class_loader); |
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844 ClassLoaderData* cld = class_loader_oop != NULL |
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|
845 ? java_lang_ClassLoader::loader_data(class_loader_oop) |
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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846 : ClassLoaderData::the_null_class_loader_data(); |
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|
847 |
2c6ef90f030a
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848 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); |
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849 |
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850 return (jlong)(uintptr_t)metadata; |
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851 WB_END |
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|
852 |
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853 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) |
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854 oop class_loader_oop = JNIHandles::resolve(class_loader); |
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855 ClassLoaderData* cld = class_loader_oop != NULL |
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|
856 ? java_lang_ClassLoader::loader_data(class_loader_oop) |
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|
857 : ClassLoaderData::the_null_class_loader_data(); |
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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|
858 |
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859 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); |
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|
860 WB_END |
2c6ef90f030a
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|
861 |
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862 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) |
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863 if (inc < 0) { |
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|
864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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865 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); |
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8049599: MetaspaceGC::_capacity_until_GC can overflow
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|
866 } |
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|
867 |
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8049599: MetaspaceGC::_capacity_until_GC can overflow
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|
868 jlong max_size_t = (jlong) ((size_t) -1); |
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869 if (inc > max_size_t) { |
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|
870 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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871 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); |
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872 } |
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|
873 |
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874 size_t new_cap_until_GC = 0; |
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875 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); |
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876 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); |
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877 if (!success) { |
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878 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), |
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879 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " |
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880 "due to contention with another thread"); |
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|
881 } |
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882 return (jlong) new_cap_until_GC; |
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|
883 WB_END |
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884 |
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885 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) |
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886 return (jlong) MetaspaceGC::capacity_until_GC(); |
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887 WB_END |
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888 |
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889 //Some convenience methods to deal with objects from java |
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890 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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891 Symbol* signature_symbol) { |
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892 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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893 Thread* THREAD = Thread::current(); |
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894 |
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|
895 //Get the class of our object |
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896 Klass* arg_klass = object->klass(); |
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897 //Turn it into an instance-klass |
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898 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
5978
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899 |
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900 //Create symbols to look for in the class |
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901 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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902 THREAD); |
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|
903 |
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904 //To be filled in with an offset of the field we're looking for |
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905 fieldDescriptor fd; |
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906 |
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907 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
5978
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908 if (res == NULL) { |
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909 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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910 name_symbol->as_C_string()); |
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|
911 fatal("Invalid layout of preloaded class"); |
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|
912 } |
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|
913 |
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|
914 //fetch the field at the offset we've found |
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|
915 int dest_offset = fd.offset(); |
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|
916 |
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|
917 return dest_offset; |
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|
918 } |
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|
919 |
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|
920 |
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|
921 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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922 int offset = offset_for_field(field_name, object, |
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923 vmSymbols::string_signature()); |
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|
924 oop string = object->obj_field(offset); |
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7178703: Fix handling of quoted arguments and better error messages in dcmd
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925 if (string == NULL) { |
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926 return NULL; |
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|
927 } |
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|
928 const char* ret = java_lang_String::as_utf8_string(string); |
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929 return ret; |
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|
930 } |
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|
931 |
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932 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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|
933 int offset = |
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934 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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935 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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936 return ret; |
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|
937 } |
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|
938 |
20451 | 939 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { |
940 ResourceMark rm; | |
941 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
942 | |
943 // one by one registration natives for exception catching | |
944 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); | |
945 CHECK_JNI_EXCEPTION(env); | |
946 for (int i = 0, n = method_count; i < n; ++i) { | |
947 // Skip dummy entries | |
948 if (method_array[i].fnPtr == NULL) continue; | |
949 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { | |
950 jthrowable throwable_obj = env->ExceptionOccurred(); | |
951 if (throwable_obj != NULL) { | |
952 env->ExceptionClear(); | |
953 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { | |
954 // NoSuchMethodError is thrown when a method can't be found or a method is not native. | |
955 // Ignoring the exception since it is not preventing use of other WhiteBox methods. | |
956 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", | |
957 method_array[i].name, method_array[i].signature); | |
958 } | |
959 } else { | |
960 // Registration failed unexpectedly. | |
961 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", | |
962 method_array[i].name, method_array[i].signature); | |
963 env->UnregisterNatives(wbclass); | |
964 break; | |
965 } | |
966 } | |
967 } | |
968 } | |
5978
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|
969 |
5915 | 970 #define CC (char*) |
971 | |
972 static JNINativeMethod methods[] = { | |
973 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
20357
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8055098: WB API should be extended to provide information about size and age of object.
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|
974 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, |
4bfc44ba0d19
8055098: WB API should be extended to provide information about size and age of object.
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|
975 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, |
5915 | 976 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, |
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|
977 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
20608
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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|
978 {CC"classKnownToNotExist", |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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|
979 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist}, |
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|
980 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs}, |
4cb90023bf2b
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|
981 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I", |
4cb90023bf2b
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|
982 (void*)&WB_GetLookupCacheMatches}, |
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|
983 {CC"parseCommandLine", |
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|
984 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
5978
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|
985 (void*) &WB_ParseCommandLine |
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|
986 }, |
20667
887a7cedb892
8064701: Some CDS optimizations should be disabled if bootclasspath is modified by JVMTI
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|
987 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V", |
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988 (void*)&WB_AddToBootstrapClassLoaderSearch}, |
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8064701: Some CDS optimizations should be disabled if bootclasspath is modified by JVMTI
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|
989 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V", |
887a7cedb892
8064701: Some CDS optimizations should be disabled if bootclasspath is modified by JVMTI
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|
990 (void*)&WB_AddToSystemClassLoaderSearch}, |
12233
40136aa2cdb1
8010722: assert: failed: heap size is too big for compressed oops
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|
991 {CC"getCompressedOopsMaxHeapSize", CC"()J", |
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8010722: assert: failed: heap size is too big for compressed oops
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|
992 (void*)&WB_GetCompressedOopsMaxHeapSize}, |
10241
d17700c82d7d
8006088: Incompatible heap size flags accepted by VM
tschatzl
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|
993 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
13053
9d8b29a0548c
8027237: New tests on ReservedSpace/VirtualSpace classes
mgerdin
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diff
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|
994 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, |
9d8b29a0548c
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995 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, |
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|
996 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
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|
997 #if INCLUDE_ALL_GCS |
5915 | 998 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
999 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
1000 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
1001 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
8001
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|
1002 #endif // INCLUDE_ALL_GCS |
12118
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8020829: JT_HS: 2 runtime NMT tests fail on platforms if NMT detail is not supported
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|
1003 #if INCLUDE_NMT |
9056
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|
1004 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
20360 | 1005 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, |
9056
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|
1006 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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|
1007 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
3b890cd4da64
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|
1008 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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1009 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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diff
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|
1010 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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|
1011 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, |
20553
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8059100: SIGSEGV VirtualMemoryTracker::remove_released_region
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diff
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1012 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, |
20628
80260967f994
8061969: [TESTBUG] MallocSiteHashOverflow.java should be enabled for 32-bit platforms
gtriantafill
parents:
20611
diff
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|
1013 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, |
7971
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|
1014 #endif // INCLUDE_NMT |
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1015 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
12073 | 1016 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I", |
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1017 (void*)&WB_DeoptimizeMethod }, |
12073 | 1018 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z", |
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|
1019 (void*)&WB_IsMethodCompiled }, |
12073 | 1020 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z", |
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1021 (void*)&WB_IsMethodCompilable}, |
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1022 {CC"isMethodQueuedForCompilation", |
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1023 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
8051
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1024 {CC"makeMethodNotCompilable", |
12073 | 1025 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, |
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1026 {CC"testSetDontInlineMethod", |
10113
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1027 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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1028 {CC"getMethodCompilationLevel", |
12073 | 1029 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, |
1030 {CC"getMethodEntryBci", | |
1031 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, | |
1032 {CC"getCompileQueueSize", | |
1033 CC"(I)I", (void*)&WB_GetCompileQueueSize}, | |
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1034 {CC"testSetForceInlineMethod", |
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1035 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
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1036 {CC"enqueueMethodForCompilation", |
12073 | 1037 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, |
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1038 {CC"clearMethodState", |
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1039 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
20249 | 1040 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, |
1041 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, | |
1042 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, | |
1043 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, | |
1044 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, | |
1045 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", | |
1046 (void*)&WB_SetStringVMFlag}, | |
1047 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", | |
1048 (void*)&WB_GetBooleanVMFlag}, | |
1049 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
1050 (void*)&WB_GetIntxVMFlag}, | |
1051 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
1052 (void*)&WB_GetUintxVMFlag}, | |
1053 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
1054 (void*)&WB_GetUint64VMFlag}, | |
1055 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", | |
1056 (void*)&WB_GetDoubleVMFlag}, | |
1057 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", | |
1058 (void*)&WB_GetStringVMFlag}, | |
1059 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, | |
8850 | 1060 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, |
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1061 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, |
10341
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1062 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, |
20278
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1063 {CC"allocateMetaspace", |
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1064 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, |
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1065 {CC"freeMetaspace", |
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1066 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, |
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1067 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, |
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1068 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, |
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1069 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, |
17817 | 1070 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", |
1071 (void*)&WB_GetNMethod }, | |
5915 | 1072 }; |
1073 | |
1074 #undef CC | |
1075 | |
1076 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
1077 { | |
1078 if (WhiteBoxAPI) { | |
1079 // Make sure that wbclass is loaded by the null classloader | |
1080 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
1081 Handle loader(ikh->class_loader()); | |
1082 if (loader.is_null()) { | |
20451 | 1083 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); |
1084 WhiteBox::register_extended(env, wbclass, thread); | |
1085 WhiteBox::set_used(); | |
5915 | 1086 } |
1087 } | |
1088 } | |
1089 JVM_END |