Mercurial > hg > graal-compiler
annotate src/share/vm/prims/whitebox.cpp @ 20278:2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com
author | stefank |
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date | Mon, 07 Jul 2014 10:12:40 +0200 |
parents | 0c48231c5c84 |
children | 6701abbc4441 |
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 |
5915 | 46 #include "gc_implementation/g1/concurrentMark.hpp" |
47 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
48 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
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49 #endif // INCLUDE_ALL_GCS |
5915 | 50 |
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51 #ifdef INCLUDE_NMT |
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52 #include "services/memTracker.hpp" |
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53 #endif // INCLUDE_NMT |
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54 |
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55 #include "compiler/compileBroker.hpp" |
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56 #include "runtime/compilationPolicy.hpp" |
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57 |
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58 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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59 |
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60 #define SIZE_T_MAX_VALUE ((size_t) -1) |
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61 |
5915 | 62 bool WhiteBox::_used = false; |
63 | |
64 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
65 return (jlong)(void*)JNIHandles::resolve(obj); | |
66 WB_END | |
67 | |
68 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
69 return heapOopSize; | |
70 WB_END | |
71 | |
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72 |
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73 class WBIsKlassAliveClosure : public KlassClosure { |
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74 Symbol* _name; |
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75 bool _found; |
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76 public: |
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77 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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78 |
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79 void do_klass(Klass* k) { |
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80 if (_found) return; |
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81 Symbol* ksym = k->name(); |
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82 if (ksym->fast_compare(_name) == 0) { |
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83 _found = true; |
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84 } |
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85 } |
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86 |
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87 bool found() const { |
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88 return _found; |
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89 } |
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90 }; |
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91 |
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92 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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93 Handle h_name = JNIHandles::resolve(name); |
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94 if (h_name.is_null()) return false; |
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95 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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96 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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97 |
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98 WBIsKlassAliveClosure closure(sym); |
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99 ClassLoaderDataGraph::classes_do(&closure); |
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100 |
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101 return closure.found(); |
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102 WB_END |
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103 |
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104 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { |
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105 return (jlong)Arguments::max_heap_for_compressed_oops(); |
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106 } |
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107 WB_END |
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108 |
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109 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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110 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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111 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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112 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, |
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113 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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114 p->space_alignment(), p->heap_alignment()); |
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115 } |
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116 WB_END |
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117 |
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118 #ifndef PRODUCT |
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119 // Forward declaration |
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120 void TestReservedSpace_test(); |
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121 void TestReserveMemorySpecial_test(); |
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122 void TestVirtualSpace_test(); |
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123 void TestMetaspaceAux_test(); |
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124 #endif |
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125 |
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126 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) |
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127 #ifndef PRODUCT |
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128 TestReservedSpace_test(); |
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129 TestReserveMemorySpecial_test(); |
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130 TestVirtualSpace_test(); |
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131 TestMetaspaceAux_test(); |
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132 #endif |
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133 WB_END |
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134 |
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135 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) |
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136 size_t granularity = os::vm_allocation_granularity(); |
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137 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL); |
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138 VirtualSpace vs; |
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139 vs.initialize(rhs, 50 * granularity); |
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140 |
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141 //Check if constraints are complied |
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142 if (!( UseCompressedOops && rhs.base() != NULL && |
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143 Universe::narrow_oop_base() != NULL && |
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144 Universe::narrow_oop_use_implicit_null_checks() )) { |
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145 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " |
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146 "\tUseCompressedOops is %d\n" |
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147 "\trhs.base() is "PTR_FORMAT"\n" |
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148 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n" |
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149 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", |
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150 UseCompressedOops, |
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151 rhs.base(), |
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152 Universe::narrow_oop_base(), |
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153 Universe::narrow_oop_use_implicit_null_checks()); |
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154 return; |
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155 } |
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156 tty->print_cr("Reading from no access area... "); |
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157 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", |
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158 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); |
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159 WB_END |
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160 |
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161 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, |
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162 size_t magnitude, size_t iterations) { |
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163 size_t granularity = os::vm_allocation_granularity(); |
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164 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL); |
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165 VirtualSpace vs; |
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166 if (!vs.initialize(rhs, 0)) { |
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167 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); |
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168 return 3; |
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169 } |
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170 |
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171 long seed = os::random(); |
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172 tty->print_cr("Random seed is %ld", seed); |
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173 os::init_random(seed); |
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174 |
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175 for (size_t i = 0; i < iterations; i++) { |
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176 |
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177 // Whether we will shrink or grow |
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178 bool shrink = os::random() % 2L == 0; |
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179 |
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180 // Get random delta to resize virtual space |
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181 size_t delta = (size_t)os::random() % magnitude; |
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182 |
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183 // If we are about to shrink virtual space below zero, then expand instead |
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184 if (shrink && vs.committed_size() < delta) { |
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185 shrink = false; |
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186 } |
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187 |
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188 // Resizing by delta |
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189 if (shrink) { |
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190 vs.shrink_by(delta); |
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191 } else { |
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192 // If expanding fails expand_by will silently return false |
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193 vs.expand_by(delta, true); |
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194 } |
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195 } |
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196 return 0; |
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197 } |
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198 |
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199 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, |
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200 jlong reserved_space_size, jlong magnitude, jlong iterations)) |
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201 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", " |
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202 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude, |
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203 iterations); |
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204 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { |
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205 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); |
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206 return 1; |
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207 } |
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208 |
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209 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is |
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210 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. |
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211 if (sizeof(size_t) < sizeof(jlong)) { |
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212 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; |
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213 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value |
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214 || iterations > size_t_max_value) { |
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215 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); |
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216 return 2; |
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217 } |
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218 } |
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219 |
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220 return wb_stress_virtual_space_resize((size_t) reserved_space_size, |
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221 (size_t) magnitude, (size_t) iterations); |
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222 WB_END |
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223 |
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224 #if INCLUDE_ALL_GCS |
5915 | 225 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
226 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
227 oop result = JNIHandles::resolve(obj); | |
228 const HeapRegion* hr = g1->heap_region_containing(result); | |
229 return hr->isHumongous(); | |
230 WB_END | |
231 | |
232 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
233 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
234 size_t nr = g1->free_regions(); | |
235 return (jlong)nr; | |
236 WB_END | |
237 | |
238 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
239 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
240 ConcurrentMark* cm = g1->concurrent_mark(); | |
241 return cm->concurrent_marking_in_progress(); | |
242 WB_END | |
243 | |
244 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
245 return (jint)HeapRegion::GrainBytes; | |
246 WB_END | |
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247 #endif // INCLUDE_ALL_GCS |
5915 | 248 |
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249 #if INCLUDE_NMT |
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250 // Alloc memory using the test memory type so that we can use that to see if |
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251 // NMT picks it up correctly |
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252 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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253 jlong addr = 0; |
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254 |
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255 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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256 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
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257 } |
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258 |
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259 return addr; |
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260 WB_END |
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261 |
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262 // Free the memory allocated by NMTAllocTest |
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263 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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264 os::free((void*)(uintptr_t)mem, mtTest); |
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265 WB_END |
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266 |
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267 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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268 jlong addr = 0; |
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269 |
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270 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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271 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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272 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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273 } |
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274 |
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275 return addr; |
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276 WB_END |
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277 |
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278 |
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279 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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280 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); |
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281 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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282 WB_END |
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283 |
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284 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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285 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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286 WB_END |
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287 |
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288 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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289 os::release_memory((char *)(uintptr_t)addr, size); |
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290 WB_END |
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291 |
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292 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature |
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293 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) |
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294 |
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295 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { |
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296 return false; |
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297 } |
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298 |
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299 return MemTracker::wbtest_wait_for_data_merge(); |
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300 WB_END |
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301 |
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302 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) |
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303 return MemTracker::tracking_level() == MemTracker::NMT_detail; |
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304 WB_END |
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305 |
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306 #endif // INCLUDE_NMT |
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307 |
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308 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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309 assert(method != NULL, "method should not be null"); |
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310 ThreadToNativeFromVM ttn(thread); |
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311 return env->FromReflectedMethod(method); |
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312 } |
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313 |
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314 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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315 MutexLockerEx mu(Compile_lock); |
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316 CodeCache::mark_all_nmethods_for_deoptimization(); |
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317 VM_Deoptimize op; |
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318 VMThread::execute(&op); |
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319 WB_END |
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320 |
12073 | 321 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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322 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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323 int result = 0; |
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324 CHECK_JNI_EXCEPTION_(env, result); |
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325 MutexLockerEx mu(Compile_lock); |
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326 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 327 nmethod* code; |
328 if (is_osr) { | |
329 int bci = InvocationEntryBci; | |
330 while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) { | |
331 code->mark_for_deoptimization(); | |
332 ++result; | |
333 bci = code->osr_entry_bci() + 1; | |
334 } | |
335 } else { | |
336 code = mh->code(); | |
337 } | |
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338 if (code != NULL) { |
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339 code->mark_for_deoptimization(); |
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340 ++result; |
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341 } |
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342 result += CodeCache::mark_for_deoptimization(mh()); |
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343 if (result > 0) { |
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344 VM_Deoptimize op; |
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345 VMThread::execute(&op); |
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346 } |
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347 return result; |
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348 WB_END |
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349 |
12073 | 350 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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351 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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352 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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353 MutexLockerEx mu(Compile_lock); |
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354 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 355 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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356 if (code == NULL) { |
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357 return JNI_FALSE; |
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358 } |
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359 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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360 WB_END |
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361 |
12073 | 362 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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363 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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364 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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365 MutexLockerEx mu(Compile_lock); |
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366 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 367 if (is_osr) { |
368 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); | |
369 } else { | |
370 return CompilationPolicy::can_be_compiled(mh, comp_level); | |
371 } | |
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372 WB_END |
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373 |
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374 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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375 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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376 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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377 MutexLockerEx mu(Compile_lock); |
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378 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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379 return mh->queued_for_compilation(); |
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380 WB_END |
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381 |
12073 | 382 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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383 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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384 CHECK_JNI_EXCEPTION_(env, CompLevel_none); |
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385 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 386 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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387 return (code != NULL ? code->comp_level() : CompLevel_none); |
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388 WB_END |
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389 |
12073 | 390 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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391 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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392 CHECK_JNI_EXCEPTION(env); |
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393 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 394 if (is_osr) { |
395 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); | |
396 } else { | |
397 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); | |
398 } | |
399 WB_END | |
400 | |
401 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) | |
402 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
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403 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); |
12073 | 404 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
405 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); | |
406 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); | |
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407 WB_END |
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408 |
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409 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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410 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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411 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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412 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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413 bool result = mh->dont_inline(); |
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414 mh->set_dont_inline(value == JNI_TRUE); |
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415 return result; |
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416 WB_END |
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417 |
12073 | 418 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) |
419 if (comp_level == CompLevel_any) { | |
420 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + | |
421 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; | |
422 } else { | |
423 return CompileBroker::queue_size(comp_level); | |
424 } | |
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425 WB_END |
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426 |
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427 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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428 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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429 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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430 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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431 bool result = mh->force_inline(); |
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432 mh->set_force_inline(value == JNI_TRUE); |
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433 return result; |
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434 WB_END |
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435 |
12073 | 436 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) |
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437 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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438 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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439 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 440 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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441 MutexLockerEx mu(Compile_lock); |
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442 return (mh->queued_for_compilation() || nm != NULL); |
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443 WB_END |
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444 |
17867 | 445 class VM_WhiteBoxOperation : public VM_Operation { |
446 public: | |
447 VM_WhiteBoxOperation() { } | |
448 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } | |
449 bool allow_nested_vm_operations() const { return true; } | |
450 }; | |
451 | |
452 class AlwaysFalseClosure : public BoolObjectClosure { | |
453 public: | |
454 bool do_object_b(oop p) { return false; } | |
455 }; | |
456 | |
457 static AlwaysFalseClosure always_false; | |
458 | |
459 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation { | |
460 public: | |
461 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { } | |
462 void doit() { | |
463 _mdo->clean_method_data(&always_false); | |
464 } | |
465 private: | |
466 MethodData* _mdo; | |
467 }; | |
468 | |
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469 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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470 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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471 CHECK_JNI_EXCEPTION(env); |
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472 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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473 MutexLockerEx mu(Compile_lock); |
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474 MethodData* mdo = mh->method_data(); |
10107 | 475 MethodCounters* mcs = mh->method_counters(); |
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476 |
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477 if (mdo != NULL) { |
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478 mdo->init(); |
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479 ResourceMark rm; |
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480 int arg_count = mdo->method()->size_of_parameters(); |
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481 for (int i = 0; i < arg_count; i++) { |
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482 mdo->set_arg_modified(i, 0); |
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483 } |
17867 | 484 VM_WhiteBoxCleanMethodData op(mdo); |
485 VMThread::execute(&op); | |
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486 } |
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487 |
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488 mh->clear_not_c1_compilable(); |
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489 mh->clear_not_c2_compilable(); |
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490 mh->clear_not_c2_osr_compilable(); |
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491 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 492 if (mcs != NULL) { |
493 mcs->backedge_counter()->init(); | |
494 mcs->invocation_counter()->init(); | |
495 mcs->set_interpreter_invocation_count(0); | |
496 mcs->set_interpreter_throwout_count(0); | |
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497 |
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498 #ifdef TIERED |
10107 | 499 mcs->set_rate(0.0F); |
500 mh->set_prev_event_count(0, THREAD); | |
501 mh->set_prev_time(0, THREAD); | |
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502 #endif |
10107 | 503 } |
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504 WB_END |
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505 |
20249 | 506 template <typename T> |
507 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) { | |
508 if (name == NULL) { | |
509 return false; | |
510 } | |
511 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
512 const char* flag_name = env->GetStringUTFChars(name, NULL); | |
513 bool result = (*TAt)(flag_name, value); | |
514 env->ReleaseStringUTFChars(name, flag_name); | |
515 return result; | |
516 } | |
517 | |
518 template <typename T> | |
519 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) { | |
520 if (name == NULL) { | |
521 return false; | |
522 } | |
523 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
524 const char* flag_name = env->GetStringUTFChars(name, NULL); | |
525 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL); | |
526 env->ReleaseStringUTFChars(name, flag_name); | |
527 return result; | |
528 } | |
529 | |
530 template <typename T> | |
531 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { | |
532 ResourceMark rm(thread); | |
533 jclass clazz = env->FindClass(name->as_C_string()); | |
534 CHECK_JNI_EXCEPTION_(env, NULL); | |
535 jmethodID methodID = env->GetStaticMethodID(clazz, | |
536 vmSymbols::valueOf_name()->as_C_string(), | |
537 sig->as_C_string()); | |
538 CHECK_JNI_EXCEPTION_(env, NULL); | |
539 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); | |
540 CHECK_JNI_EXCEPTION_(env, NULL); | |
541 return result; | |
542 } | |
543 | |
544 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { | |
545 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); | |
546 } | |
547 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { | |
548 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); | |
549 } | |
550 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { | |
551 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); | |
552 } | |
553 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { | |
554 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); | |
555 }*/ | |
556 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { | |
557 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); | |
558 } | |
559 | |
560 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) | |
561 bool result; | |
562 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { | |
563 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
564 return booleanBox(thread, env, result); | |
565 } | |
566 return NULL; | |
567 WB_END | |
568 | |
569 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) | |
570 intx result; | |
571 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { | |
572 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
573 return longBox(thread, env, result); | |
574 } | |
575 return NULL; | |
576 WB_END | |
577 | |
578 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) | |
579 uintx result; | |
580 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { | |
581 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
582 return longBox(thread, env, result); | |
583 } | |
584 return NULL; | |
585 WB_END | |
586 | |
587 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) | |
588 uint64_t result; | |
589 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { | |
590 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
591 return longBox(thread, env, result); | |
592 } | |
593 return NULL; | |
594 WB_END | |
595 | |
596 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) | |
597 double result; | |
598 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { | |
599 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
600 return doubleBox(thread, env, result); | |
601 } | |
602 return NULL; | |
603 WB_END | |
604 | |
605 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) | |
606 ccstr ccstrResult; | |
607 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { | |
608 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
609 jstring result = env->NewStringUTF(ccstrResult); | |
610 CHECK_JNI_EXCEPTION_(env, NULL); | |
611 return result; | |
612 } | |
613 return NULL; | |
614 WB_END | |
615 | |
616 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) | |
617 bool result = value == JNI_TRUE ? true : false; | |
618 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); | |
619 WB_END | |
620 | |
621 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
622 intx result = value; | |
623 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); | |
624 WB_END | |
625 | |
626 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
627 uintx result = value; | |
628 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); | |
629 WB_END | |
630 | |
631 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) | |
632 uint64_t result = value; | |
633 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); | |
634 WB_END | |
635 | |
636 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) | |
637 double result = value; | |
638 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); | |
639 WB_END | |
640 | |
641 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) | |
642 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
643 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); | |
644 ccstr ccstrResult = ccstrValue; | |
645 bool needFree; | |
646 { | |
647 ThreadInVMfromNative ttvfn(thread); // back to VM | |
648 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); | |
649 } | |
650 if (value != NULL) { | |
651 env->ReleaseStringUTFChars(value, ccstrValue); | |
652 } | |
653 if (needFree) { | |
654 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal); | |
655 } | |
656 WB_END | |
657 | |
658 | |
8850 | 659 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
660 ResourceMark rm(THREAD); | |
661 int len; | |
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662 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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663 return (StringTable::lookup(name, len) != NULL); |
8850 | 664 WB_END |
665 | |
666 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
667 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
668 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
669 WB_END | |
670 | |
10157 | 671 |
10341
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672 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) |
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673 // static+volatile in order to force the read to happen |
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674 // (not be eliminated by the compiler) |
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675 static char c; |
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676 static volatile char* p; |
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677 |
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678 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); |
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679 if (p == NULL) { |
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680 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); |
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681 } |
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682 |
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683 c = *p; |
10157 | 684 WB_END |
685 | |
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686 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) |
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687 const char* cpu_features = VM_Version::cpu_features(); |
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688 ThreadToNativeFromVM ttn(thread); |
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689 jstring features_string = env->NewStringUTF(cpu_features); |
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690 |
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691 CHECK_JNI_EXCEPTION_(env, NULL); |
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692 |
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693 return features_string; |
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694 WB_END |
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695 |
17817 | 696 |
697 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) | |
698 ResourceMark rm(THREAD); | |
699 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
700 CHECK_JNI_EXCEPTION_(env, NULL); | |
701 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); | |
702 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); | |
703 jobjectArray result = NULL; | |
704 if (code == NULL) { | |
705 return result; | |
706 } | |
707 int insts_size = code->insts_size(); | |
708 | |
709 ThreadToNativeFromVM ttn(thread); | |
710 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); | |
711 CHECK_JNI_EXCEPTION_(env, NULL); | |
712 result = env->NewObjectArray(2, clazz, NULL); | |
713 if (result == NULL) { | |
714 return result; | |
715 } | |
716 | |
20249 | 717 jobject obj = integerBox(thread, env, code->comp_level()); |
17817 | 718 CHECK_JNI_EXCEPTION_(env, NULL); |
719 env->SetObjectArrayElement(result, 0, obj); | |
720 | |
721 jbyteArray insts = env->NewByteArray(insts_size); | |
722 CHECK_JNI_EXCEPTION_(env, NULL); | |
723 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); | |
724 env->SetObjectArrayElement(result, 1, insts); | |
725 | |
726 return result; | |
727 WB_END | |
728 | |
729 | |
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730 int WhiteBox::array_bytes_to_length(size_t bytes) { |
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731 return Array<u1>::bytes_to_length(bytes); |
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732 } |
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733 |
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734 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) |
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735 if (size < 0) { |
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736 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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737 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); |
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738 } |
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739 |
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740 oop class_loader_oop = JNIHandles::resolve(class_loader); |
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741 ClassLoaderData* cld = class_loader_oop != NULL |
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742 ? java_lang_ClassLoader::loader_data(class_loader_oop) |
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743 : ClassLoaderData::the_null_class_loader_data(); |
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744 |
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745 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); |
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746 |
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747 return (jlong)(uintptr_t)metadata; |
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748 WB_END |
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749 |
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750 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) |
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751 oop class_loader_oop = JNIHandles::resolve(class_loader); |
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752 ClassLoaderData* cld = class_loader_oop != NULL |
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753 ? java_lang_ClassLoader::loader_data(class_loader_oop) |
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754 : ClassLoaderData::the_null_class_loader_data(); |
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755 |
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756 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); |
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757 WB_END |
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758 |
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759 //Some convenience methods to deal with objects from java |
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760 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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761 Symbol* signature_symbol) { |
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762 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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763 Thread* THREAD = Thread::current(); |
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|
764 |
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765 //Get the class of our object |
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766 Klass* arg_klass = object->klass(); |
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767 //Turn it into an instance-klass |
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768 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
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769 |
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770 //Create symbols to look for in the class |
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771 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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772 THREAD); |
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|
773 |
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774 //To be filled in with an offset of the field we're looking for |
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775 fieldDescriptor fd; |
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|
776 |
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777 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
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778 if (res == NULL) { |
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779 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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780 name_symbol->as_C_string()); |
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781 fatal("Invalid layout of preloaded class"); |
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782 } |
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|
783 |
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|
784 //fetch the field at the offset we've found |
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|
785 int dest_offset = fd.offset(); |
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|
786 |
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787 return dest_offset; |
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|
788 } |
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|
789 |
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|
790 |
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791 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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792 int offset = offset_for_field(field_name, object, |
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|
793 vmSymbols::string_signature()); |
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|
794 oop string = object->obj_field(offset); |
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795 if (string == NULL) { |
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|
796 return NULL; |
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|
797 } |
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|
798 const char* ret = java_lang_String::as_utf8_string(string); |
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|
799 return ret; |
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|
800 } |
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|
801 |
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|
802 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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|
803 int offset = |
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|
804 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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805 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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|
806 return ret; |
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|
807 } |
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|
808 |
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|
809 |
5915 | 810 #define CC (char*) |
811 | |
812 static JNINativeMethod methods[] = { | |
813 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
814 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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815 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
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816 {CC"parseCommandLine", |
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817 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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818 (void*) &WB_ParseCommandLine |
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819 }, |
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|
820 {CC"getCompressedOopsMaxHeapSize", CC"()J", |
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821 (void*)&WB_GetCompressedOopsMaxHeapSize}, |
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822 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
13053
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823 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, |
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824 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, |
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825 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, |
8001
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826 #if INCLUDE_ALL_GCS |
5915 | 827 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
828 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
829 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
830 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
8001
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|
831 #endif // INCLUDE_ALL_GCS |
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8020829: JT_HS: 2 runtime NMT tests fail on platforms if NMT detail is not supported
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|
832 #if INCLUDE_NMT |
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|
833 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
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834 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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835 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
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836 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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837 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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838 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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839 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, |
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|
840 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, |
7971
4102b59539ce
8005012: Add WB APIs to better support NMT testing
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|
841 #endif // INCLUDE_NMT |
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842 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
12073 | 843 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I", |
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844 (void*)&WB_DeoptimizeMethod }, |
12073 | 845 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z", |
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846 (void*)&WB_IsMethodCompiled }, |
12073 | 847 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z", |
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848 (void*)&WB_IsMethodCompilable}, |
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|
849 {CC"isMethodQueuedForCompilation", |
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850 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
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851 {CC"makeMethodNotCompilable", |
12073 | 852 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, |
9080
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853 {CC"testSetDontInlineMethod", |
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854 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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855 {CC"getMethodCompilationLevel", |
12073 | 856 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, |
857 {CC"getMethodEntryBci", | |
858 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, | |
859 {CC"getCompileQueueSize", | |
860 CC"(I)I", (void*)&WB_GetCompileQueueSize}, | |
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861 {CC"testSetForceInlineMethod", |
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862 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
9080
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863 {CC"enqueueMethodForCompilation", |
12073 | 864 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, |
9080
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865 {CC"clearMethodState", |
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|
866 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
20249 | 867 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, |
868 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, | |
869 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, | |
870 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, | |
871 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, | |
872 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", | |
873 (void*)&WB_SetStringVMFlag}, | |
874 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", | |
875 (void*)&WB_GetBooleanVMFlag}, | |
876 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
877 (void*)&WB_GetIntxVMFlag}, | |
878 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
879 (void*)&WB_GetUintxVMFlag}, | |
880 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", | |
881 (void*)&WB_GetUint64VMFlag}, | |
882 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", | |
883 (void*)&WB_GetDoubleVMFlag}, | |
884 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", | |
885 (void*)&WB_GetStringVMFlag}, | |
886 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, | |
8850 | 887 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, |
10341
f54c85acc043
8013726: runtime/memory/ReserveMemory.java fails due to 'assert(bytes % os::vm_allocation_granularity() == 0) failed: reserve block size'
mikael
parents:
10241
diff
changeset
|
888 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, |
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
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parents:
20249
diff
changeset
|
889 {CC"allocateMetaspace", |
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|
890 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, |
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changeset
|
891 {CC"freeMetaspace", |
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diff
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|
892 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, |
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8035857: Add tests to verify correctness of operations with BMI1 and LZCNT instructions
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893 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, |
17817 | 894 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", |
895 (void*)&WB_GetNMethod }, | |
5915 | 896 }; |
897 | |
898 #undef CC | |
899 | |
900 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
901 { | |
902 if (WhiteBoxAPI) { | |
903 // Make sure that wbclass is loaded by the null classloader | |
904 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
905 Handle loader(ikh->class_loader()); | |
906 if (loader.is_null()) { | |
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8012337: Change Whitebox implementation to make absence of method in Whitebox.class not fatal
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|
907 ResourceMark rm; |
5915 | 908 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
10196
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|
909 bool result = true; |
dc7db03f5aa2
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|
910 // one by one registration natives for exception catching |
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911 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
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912 CHECK_JNI_EXCEPTION(env); |
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913 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
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914 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
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915 result = false; |
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916 jthrowable throwable_obj = env->ExceptionOccurred(); |
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917 if (throwable_obj != NULL) { |
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918 env->ExceptionClear(); |
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919 if (env->IsInstanceOf(throwable_obj, exceptionKlass)) { |
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920 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
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921 // ignoring the exception |
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922 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
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923 } |
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924 } else { |
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925 // register is failed w/o exception or w/ unexpected exception |
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926 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", methods[i].name, methods[i].signature); |
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927 env->UnregisterNatives(wbclass); |
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928 break; |
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929 } |
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930 } |
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931 } |
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932 |
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933 if (result) { |
5915 | 934 WhiteBox::set_used(); |
935 } | |
936 } | |
937 } | |
938 } | |
939 JVM_END |