Mercurial > hg > truffle
annotate src/share/vm/prims/whitebox.cpp @ 14702:d4dd5204c0aa
Merge
author | ehelin |
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date | Fri, 14 Mar 2014 13:27:18 +0100 |
parents | c66479743828 |
children | 4ca6dc0799b6 |
rev | line source |
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5915 | 1 /* |
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2 * Copyright (c) 2012, 2013, 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 | |
27 #include "memory/universe.hpp" | |
28 #include "oops/oop.inline.hpp" | |
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29 |
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30 #include "classfile/symbolTable.hpp" |
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31 #include "classfile/classLoaderData.hpp" |
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32 |
5915 | 33 #include "prims/whitebox.hpp" |
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34 #include "prims/wbtestmethods/parserTests.hpp" |
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35 |
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36 #include "runtime/arguments.hpp" |
5915 | 37 #include "runtime/interfaceSupport.hpp" |
38 #include "runtime/os.hpp" | |
39 #include "utilities/debug.hpp" | |
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40 #include "utilities/macros.hpp" |
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41 #include "utilities/exceptions.hpp" |
5915 | 42 |
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43 #if INCLUDE_ALL_GCS |
5915 | 44 #include "gc_implementation/g1/concurrentMark.hpp" |
45 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
46 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
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47 #endif // INCLUDE_ALL_GCS |
5915 | 48 |
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49 #ifdef INCLUDE_NMT |
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50 #include "services/memTracker.hpp" |
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51 #endif // INCLUDE_NMT |
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52 |
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53 #include "compiler/compileBroker.hpp" |
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54 #include "runtime/compilationPolicy.hpp" |
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55 |
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56 #define SIZE_T_MAX_VALUE ((size_t) -1) |
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57 |
5915 | 58 bool WhiteBox::_used = false; |
59 | |
60 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
61 return (jlong)(void*)JNIHandles::resolve(obj); | |
62 WB_END | |
63 | |
64 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
65 return heapOopSize; | |
66 WB_END | |
67 | |
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68 |
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69 class WBIsKlassAliveClosure : public KlassClosure { |
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70 Symbol* _name; |
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71 bool _found; |
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72 public: |
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73 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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74 |
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75 void do_klass(Klass* k) { |
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76 if (_found) return; |
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77 Symbol* ksym = k->name(); |
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78 if (ksym->fast_compare(_name) == 0) { |
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79 _found = true; |
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80 } |
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81 } |
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82 |
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83 bool found() const { |
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84 return _found; |
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85 } |
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86 }; |
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87 |
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88 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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89 Handle h_name = JNIHandles::resolve(name); |
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90 if (h_name.is_null()) return false; |
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91 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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92 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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93 |
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94 WBIsKlassAliveClosure closure(sym); |
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95 ClassLoaderDataGraph::classes_do(&closure); |
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96 |
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97 return closure.found(); |
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98 WB_END |
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99 |
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100 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { |
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101 return (jlong)Arguments::max_heap_for_compressed_oops(); |
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102 } |
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103 WB_END |
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104 |
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105 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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106 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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107 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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108 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Space alignment "SIZE_FORMAT" Heap alignment "SIZE_FORMAT, |
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109 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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110 p->space_alignment(), p->heap_alignment()); |
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111 } |
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112 WB_END |
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113 |
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114 #ifndef PRODUCT |
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115 // Forward declaration |
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116 void TestReservedSpace_test(); |
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117 void TestReserveMemorySpecial_test(); |
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118 void TestVirtualSpace_test(); |
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119 void TestMetaspaceAux_test(); |
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120 #endif |
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121 |
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122 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) |
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123 #ifndef PRODUCT |
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124 TestReservedSpace_test(); |
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125 TestReserveMemorySpecial_test(); |
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126 TestVirtualSpace_test(); |
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127 TestMetaspaceAux_test(); |
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128 #endif |
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129 WB_END |
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130 |
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131 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) |
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132 size_t granularity = os::vm_allocation_granularity(); |
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133 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL); |
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134 VirtualSpace vs; |
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135 vs.initialize(rhs, 50 * granularity); |
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136 |
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137 //Check if constraints are complied |
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138 if (!( UseCompressedOops && rhs.base() != NULL && |
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139 Universe::narrow_oop_base() != NULL && |
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140 Universe::narrow_oop_use_implicit_null_checks() )) { |
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141 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " |
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142 "\tUseCompressedOops is %d\n" |
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143 "\trhs.base() is "PTR_FORMAT"\n" |
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144 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n" |
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145 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", |
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146 UseCompressedOops, |
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147 rhs.base(), |
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148 Universe::narrow_oop_base(), |
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149 Universe::narrow_oop_use_implicit_null_checks()); |
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150 return; |
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151 } |
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152 tty->print_cr("Reading from no access area... "); |
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153 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", |
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154 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); |
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155 WB_END |
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156 |
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157 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, |
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158 size_t magnitude, size_t iterations) { |
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159 size_t granularity = os::vm_allocation_granularity(); |
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160 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL); |
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161 VirtualSpace vs; |
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162 if (!vs.initialize(rhs, 0)) { |
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163 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); |
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164 return 3; |
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165 } |
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166 |
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167 long seed = os::random(); |
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168 tty->print_cr("Random seed is %ld", seed); |
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169 os::init_random(seed); |
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170 |
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171 for (size_t i = 0; i < iterations; i++) { |
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172 |
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173 // Whether we will shrink or grow |
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174 bool shrink = os::random() % 2L == 0; |
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175 |
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176 // Get random delta to resize virtual space |
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177 size_t delta = (size_t)os::random() % magnitude; |
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178 |
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179 // If we are about to shrink virtual space below zero, then expand instead |
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180 if (shrink && vs.committed_size() < delta) { |
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181 shrink = false; |
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182 } |
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183 |
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184 // Resizing by delta |
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185 if (shrink) { |
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186 vs.shrink_by(delta); |
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187 } else { |
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188 // If expanding fails expand_by will silently return false |
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189 vs.expand_by(delta, true); |
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190 } |
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191 } |
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192 return 0; |
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193 } |
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194 |
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195 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, |
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196 jlong reserved_space_size, jlong magnitude, jlong iterations)) |
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197 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", " |
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198 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude, |
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199 iterations); |
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200 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { |
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201 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); |
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202 return 1; |
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203 } |
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204 |
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205 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is |
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206 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. |
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207 if (sizeof(size_t) < sizeof(jlong)) { |
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208 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; |
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209 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value |
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210 || iterations > size_t_max_value) { |
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211 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); |
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212 return 2; |
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213 } |
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214 } |
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215 |
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216 return wb_stress_virtual_space_resize((size_t) reserved_space_size, |
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217 (size_t) magnitude, (size_t) iterations); |
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218 WB_END |
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219 |
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220 #if INCLUDE_ALL_GCS |
5915 | 221 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
222 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
223 oop result = JNIHandles::resolve(obj); | |
224 const HeapRegion* hr = g1->heap_region_containing(result); | |
225 return hr->isHumongous(); | |
226 WB_END | |
227 | |
228 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
229 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
230 size_t nr = g1->free_regions(); | |
231 return (jlong)nr; | |
232 WB_END | |
233 | |
234 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
235 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
236 ConcurrentMark* cm = g1->concurrent_mark(); | |
237 return cm->concurrent_marking_in_progress(); | |
238 WB_END | |
239 | |
240 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
241 return (jint)HeapRegion::GrainBytes; | |
242 WB_END | |
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243 #endif // INCLUDE_ALL_GCS |
5915 | 244 |
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245 #if INCLUDE_NMT |
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246 // Alloc memory using the test memory type so that we can use that to see if |
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247 // NMT picks it up correctly |
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248 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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249 jlong addr = 0; |
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250 |
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251 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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252 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
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253 } |
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254 |
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255 return addr; |
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256 WB_END |
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257 |
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258 // Free the memory allocated by NMTAllocTest |
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259 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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260 os::free((void*)(uintptr_t)mem, mtTest); |
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261 WB_END |
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262 |
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263 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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264 jlong addr = 0; |
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265 |
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266 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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267 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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268 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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269 } |
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270 |
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271 return addr; |
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272 WB_END |
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273 |
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274 |
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275 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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276 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); |
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277 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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278 WB_END |
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279 |
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280 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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281 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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282 WB_END |
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283 |
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284 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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285 os::release_memory((char *)(uintptr_t)addr, size); |
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286 WB_END |
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287 |
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288 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature |
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289 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) |
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290 |
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291 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { |
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292 return false; |
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293 } |
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294 |
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295 return MemTracker::wbtest_wait_for_data_merge(); |
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296 WB_END |
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297 |
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298 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) |
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299 return MemTracker::tracking_level() == MemTracker::NMT_detail; |
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300 WB_END |
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301 |
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302 #endif // INCLUDE_NMT |
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303 |
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304 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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305 assert(method != NULL, "method should not be null"); |
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306 ThreadToNativeFromVM ttn(thread); |
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307 return env->FromReflectedMethod(method); |
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308 } |
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309 |
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310 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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311 MutexLockerEx mu(Compile_lock); |
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312 CodeCache::mark_all_nmethods_for_deoptimization(); |
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313 VM_Deoptimize op; |
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314 VMThread::execute(&op); |
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315 WB_END |
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316 |
12073 | 317 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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318 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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319 int result = 0; |
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320 CHECK_JNI_EXCEPTION_(env, result); |
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321 MutexLockerEx mu(Compile_lock); |
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322 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 323 nmethod* code; |
324 if (is_osr) { | |
325 int bci = InvocationEntryBci; | |
326 while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) { | |
327 code->mark_for_deoptimization(); | |
328 ++result; | |
329 bci = code->osr_entry_bci() + 1; | |
330 } | |
331 } else { | |
332 code = mh->code(); | |
333 } | |
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334 if (code != NULL) { |
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335 code->mark_for_deoptimization(); |
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336 ++result; |
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337 } |
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338 result += CodeCache::mark_for_deoptimization(mh()); |
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339 if (result > 0) { |
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340 VM_Deoptimize op; |
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341 VMThread::execute(&op); |
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342 } |
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343 return result; |
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344 WB_END |
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345 |
12073 | 346 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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347 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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348 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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349 MutexLockerEx mu(Compile_lock); |
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350 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 351 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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352 if (code == NULL) { |
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353 return JNI_FALSE; |
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354 } |
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355 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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356 WB_END |
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357 |
12073 | 358 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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359 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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360 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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361 MutexLockerEx mu(Compile_lock); |
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362 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 363 if (is_osr) { |
364 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); | |
365 } else { | |
366 return CompilationPolicy::can_be_compiled(mh, comp_level); | |
367 } | |
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368 WB_END |
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369 |
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370 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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371 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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372 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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373 MutexLockerEx mu(Compile_lock); |
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374 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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375 return mh->queued_for_compilation(); |
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376 WB_END |
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377 |
12073 | 378 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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379 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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380 CHECK_JNI_EXCEPTION_(env, CompLevel_none); |
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381 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 382 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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383 return (code != NULL ? code->comp_level() : CompLevel_none); |
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384 WB_END |
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385 |
12073 | 386 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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387 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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388 CHECK_JNI_EXCEPTION(env); |
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389 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 390 if (is_osr) { |
391 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); | |
392 } else { | |
393 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); | |
394 } | |
395 WB_END | |
396 | |
397 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) | |
398 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
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399 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); |
12073 | 400 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
401 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); | |
402 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); | |
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403 WB_END |
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404 |
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405 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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406 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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407 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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408 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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409 bool result = mh->dont_inline(); |
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410 mh->set_dont_inline(value == JNI_TRUE); |
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411 return result; |
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412 WB_END |
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413 |
12073 | 414 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) |
415 if (comp_level == CompLevel_any) { | |
416 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + | |
417 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; | |
418 } else { | |
419 return CompileBroker::queue_size(comp_level); | |
420 } | |
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421 WB_END |
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422 |
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423 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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424 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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425 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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426 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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427 bool result = mh->force_inline(); |
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428 mh->set_force_inline(value == JNI_TRUE); |
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429 return result; |
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430 WB_END |
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431 |
12073 | 432 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) |
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433 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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434 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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435 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 436 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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437 MutexLockerEx mu(Compile_lock); |
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438 return (mh->queued_for_compilation() || nm != NULL); |
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439 WB_END |
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440 |
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441 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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442 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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443 CHECK_JNI_EXCEPTION(env); |
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444 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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445 MutexLockerEx mu(Compile_lock); |
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446 MethodData* mdo = mh->method_data(); |
10107 | 447 MethodCounters* mcs = mh->method_counters(); |
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448 |
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449 if (mdo != NULL) { |
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450 mdo->init(); |
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451 ResourceMark rm; |
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452 int arg_count = mdo->method()->size_of_parameters(); |
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453 for (int i = 0; i < arg_count; i++) { |
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454 mdo->set_arg_modified(i, 0); |
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455 } |
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456 } |
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457 |
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458 mh->clear_not_c1_compilable(); |
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459 mh->clear_not_c2_compilable(); |
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460 mh->clear_not_c2_osr_compilable(); |
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461 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 462 if (mcs != NULL) { |
463 mcs->backedge_counter()->init(); | |
464 mcs->invocation_counter()->init(); | |
465 mcs->set_interpreter_invocation_count(0); | |
466 mcs->set_interpreter_throwout_count(0); | |
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467 |
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468 #ifdef TIERED |
10107 | 469 mcs->set_rate(0.0F); |
470 mh->set_prev_event_count(0, THREAD); | |
471 mh->set_prev_time(0, THREAD); | |
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472 #endif |
10107 | 473 } |
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474 WB_END |
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475 |
8850 | 476 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
477 ResourceMark rm(THREAD); | |
478 int len; | |
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479 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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480 return (StringTable::lookup(name, len) != NULL); |
8850 | 481 WB_END |
482 | |
483 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
484 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
485 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
486 WB_END | |
487 | |
10157 | 488 |
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489 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) |
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490 // static+volatile in order to force the read to happen |
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491 // (not be eliminated by the compiler) |
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492 static char c; |
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493 static volatile char* p; |
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494 |
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495 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); |
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496 if (p == NULL) { |
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497 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); |
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498 } |
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499 |
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500 c = *p; |
10157 | 501 WB_END |
502 | |
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503 //Some convenience methods to deal with objects from java |
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504 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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505 Symbol* signature_symbol) { |
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506 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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507 Thread* THREAD = Thread::current(); |
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508 |
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509 //Get the class of our object |
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510 Klass* arg_klass = object->klass(); |
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511 //Turn it into an instance-klass |
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512 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
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513 |
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514 //Create symbols to look for in the class |
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515 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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516 THREAD); |
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517 |
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518 //To be filled in with an offset of the field we're looking for |
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519 fieldDescriptor fd; |
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520 |
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521 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
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522 if (res == NULL) { |
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523 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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524 name_symbol->as_C_string()); |
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525 fatal("Invalid layout of preloaded class"); |
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526 } |
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527 |
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528 //fetch the field at the offset we've found |
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529 int dest_offset = fd.offset(); |
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530 |
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531 return dest_offset; |
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532 } |
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533 |
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534 |
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535 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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536 int offset = offset_for_field(field_name, object, |
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537 vmSymbols::string_signature()); |
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538 oop string = object->obj_field(offset); |
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539 if (string == NULL) { |
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540 return NULL; |
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541 } |
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542 const char* ret = java_lang_String::as_utf8_string(string); |
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543 return ret; |
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544 } |
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545 |
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546 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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547 int offset = |
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548 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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549 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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550 return ret; |
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551 } |
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552 |
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553 |
5915 | 554 #define CC (char*) |
555 | |
556 static JNINativeMethod methods[] = { | |
557 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
558 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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559 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
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560 {CC"parseCommandLine", |
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561 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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562 (void*) &WB_ParseCommandLine |
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563 }, |
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564 {CC"getCompressedOopsMaxHeapSize", CC"()J", |
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565 (void*)&WB_GetCompressedOopsMaxHeapSize}, |
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566 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
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567 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, |
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568 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, |
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569 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, |
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570 #if INCLUDE_ALL_GCS |
5915 | 571 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
572 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
573 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
574 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
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575 #endif // INCLUDE_ALL_GCS |
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576 #if INCLUDE_NMT |
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577 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
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578 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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579 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
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580 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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581 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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582 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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583 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, |
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584 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, |
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585 #endif // INCLUDE_NMT |
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586 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
12073 | 587 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I", |
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588 (void*)&WB_DeoptimizeMethod }, |
12073 | 589 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z", |
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590 (void*)&WB_IsMethodCompiled }, |
12073 | 591 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z", |
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592 (void*)&WB_IsMethodCompilable}, |
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593 {CC"isMethodQueuedForCompilation", |
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594 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
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595 {CC"makeMethodNotCompilable", |
12073 | 596 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, |
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597 {CC"testSetDontInlineMethod", |
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598 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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599 {CC"getMethodCompilationLevel", |
12073 | 600 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, |
601 {CC"getMethodEntryBci", | |
602 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, | |
603 {CC"getCompileQueueSize", | |
604 CC"(I)I", (void*)&WB_GetCompileQueueSize}, | |
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605 {CC"testSetForceInlineMethod", |
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606 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
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607 {CC"enqueueMethodForCompilation", |
12073 | 608 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, |
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609 {CC"clearMethodState", |
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610 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
8850 | 611 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, |
612 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, | |
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613 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, |
5915 | 614 }; |
615 | |
616 #undef CC | |
617 | |
618 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
619 { | |
620 if (WhiteBoxAPI) { | |
621 // Make sure that wbclass is loaded by the null classloader | |
622 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
623 Handle loader(ikh->class_loader()); | |
624 if (loader.is_null()) { | |
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625 ResourceMark rm; |
5915 | 626 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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627 bool result = true; |
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628 // one by one registration natives for exception catching |
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629 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
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630 CHECK_JNI_EXCEPTION(env); |
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631 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
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632 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
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633 result = false; |
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634 jthrowable throwable_obj = env->ExceptionOccurred(); |
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635 if (throwable_obj != NULL) { |
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636 env->ExceptionClear(); |
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637 if (env->IsInstanceOf(throwable_obj, exceptionKlass)) { |
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638 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
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639 // ignoring the exception |
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640 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
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641 } |
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642 } else { |
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643 // register is failed w/o exception or w/ unexpected exception |
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644 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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645 env->UnregisterNatives(wbclass); |
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646 break; |
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647 } |
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648 } |
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649 } |
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650 |
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651 if (result) { |
5915 | 652 WhiteBox::set_used(); |
653 } | |
654 } | |
655 } | |
656 } | |
657 JVM_END |