Mercurial > hg > truffle
annotate src/share/vm/prims/whitebox.cpp @ 18134:6a2f814224b1
hotspot/graal: simplify CTW logic. now, the following configurations are supported:
(1) CTW with Graal, graal compiled by itself with bootstrap (--vm graal -XX:+BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld)
(2) CTW with Graal, graal compiled by C1/itself aka. tiered with bootstrap (--vm graal -XX:+BootstrapGraal -XX:+TieredCompilation +XX:+CompileTheWorld)
(3) CTW with Graal, graal compiled by itself without bootstrap (--vm graal -XX:-BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld)
(4) CTW with Graal, graal compiled by C1/itself aka. tiered without bootstrap (--vm graal -XX:-BootstrapGraal -XX:+TieredCompilation -XX:+CompileTheWorld)
(5) CTW with Graal, graal compiled by C1/C2 aka. hosted (--vm server -XX:+CompileTheWorld)
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Tue, 21 Oct 2014 10:17:06 +0200 |
parents | 52b4284cb496 |
children | 7848fc12602b |
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 | |
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 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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57 |
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58 #define SIZE_T_MAX_VALUE ((size_t) -1) |
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59 |
5915 | 60 bool WhiteBox::_used = false; |
61 | |
62 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
63 return (jlong)(void*)JNIHandles::resolve(obj); | |
64 WB_END | |
65 | |
66 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
67 return heapOopSize; | |
68 WB_END | |
69 | |
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70 |
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71 class WBIsKlassAliveClosure : public KlassClosure { |
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72 Symbol* _name; |
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73 bool _found; |
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74 public: |
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75 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} |
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76 |
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77 void do_klass(Klass* k) { |
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78 if (_found) return; |
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79 Symbol* ksym = k->name(); |
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80 if (ksym->fast_compare(_name) == 0) { |
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81 _found = true; |
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82 } |
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83 } |
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84 |
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85 bool found() const { |
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86 return _found; |
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87 } |
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88 }; |
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89 |
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90 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) |
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91 Handle h_name = JNIHandles::resolve(name); |
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92 if (h_name.is_null()) return false; |
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93 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); |
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94 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return |
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95 |
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96 WBIsKlassAliveClosure closure(sym); |
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97 ClassLoaderDataGraph::classes_do(&closure); |
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98 |
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99 return closure.found(); |
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100 WB_END |
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101 |
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102 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { |
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103 return (jlong)Arguments::max_heap_for_compressed_oops(); |
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104 } |
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105 WB_END |
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106 |
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107 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { |
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108 CollectorPolicy * p = Universe::heap()->collector_policy(); |
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109 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " |
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110 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, |
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111 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), |
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112 p->space_alignment(), p->heap_alignment()); |
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113 } |
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114 WB_END |
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115 |
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116 #ifndef PRODUCT |
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117 // Forward declaration |
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118 void TestReservedSpace_test(); |
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119 void TestReserveMemorySpecial_test(); |
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120 void TestVirtualSpace_test(); |
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121 void TestMetaspaceAux_test(); |
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122 #endif |
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123 |
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124 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) |
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125 #ifndef PRODUCT |
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126 TestReservedSpace_test(); |
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127 TestReserveMemorySpecial_test(); |
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128 TestVirtualSpace_test(); |
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129 TestMetaspaceAux_test(); |
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130 #endif |
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131 WB_END |
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132 |
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133 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) |
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134 size_t granularity = os::vm_allocation_granularity(); |
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135 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL); |
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136 VirtualSpace vs; |
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137 vs.initialize(rhs, 50 * granularity); |
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138 |
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139 //Check if constraints are complied |
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140 if (!( UseCompressedOops && rhs.base() != NULL && |
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141 Universe::narrow_oop_base() != NULL && |
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142 Universe::narrow_oop_use_implicit_null_checks() )) { |
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143 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " |
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144 "\tUseCompressedOops is %d\n" |
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145 "\trhs.base() is "PTR_FORMAT"\n" |
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146 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n" |
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147 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", |
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148 UseCompressedOops, |
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149 rhs.base(), |
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150 Universe::narrow_oop_base(), |
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151 Universe::narrow_oop_use_implicit_null_checks()); |
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152 return; |
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153 } |
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154 tty->print_cr("Reading from no access area... "); |
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155 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", |
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156 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); |
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157 WB_END |
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158 |
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159 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, |
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160 size_t magnitude, size_t iterations) { |
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161 size_t granularity = os::vm_allocation_granularity(); |
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162 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL); |
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163 VirtualSpace vs; |
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164 if (!vs.initialize(rhs, 0)) { |
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165 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); |
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166 return 3; |
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167 } |
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168 |
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169 long seed = os::random(); |
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170 tty->print_cr("Random seed is %ld", seed); |
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171 os::init_random(seed); |
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172 |
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173 for (size_t i = 0; i < iterations; i++) { |
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174 |
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175 // Whether we will shrink or grow |
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176 bool shrink = os::random() % 2L == 0; |
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177 |
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178 // Get random delta to resize virtual space |
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179 size_t delta = (size_t)os::random() % magnitude; |
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180 |
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181 // If we are about to shrink virtual space below zero, then expand instead |
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182 if (shrink && vs.committed_size() < delta) { |
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183 shrink = false; |
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184 } |
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185 |
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186 // Resizing by delta |
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187 if (shrink) { |
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188 vs.shrink_by(delta); |
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189 } else { |
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190 // If expanding fails expand_by will silently return false |
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191 vs.expand_by(delta, true); |
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192 } |
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193 } |
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194 return 0; |
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195 } |
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196 |
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197 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, |
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198 jlong reserved_space_size, jlong magnitude, jlong iterations)) |
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199 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", " |
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200 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude, |
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201 iterations); |
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202 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { |
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203 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); |
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204 return 1; |
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205 } |
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206 |
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207 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is |
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208 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. |
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209 if (sizeof(size_t) < sizeof(jlong)) { |
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210 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; |
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211 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value |
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212 || iterations > size_t_max_value) { |
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213 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); |
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214 return 2; |
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215 } |
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216 } |
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217 |
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218 return wb_stress_virtual_space_resize((size_t) reserved_space_size, |
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219 (size_t) magnitude, (size_t) iterations); |
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220 WB_END |
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221 |
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222 #if INCLUDE_ALL_GCS |
5915 | 223 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) |
224 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
225 oop result = JNIHandles::resolve(obj); | |
226 const HeapRegion* hr = g1->heap_region_containing(result); | |
227 return hr->isHumongous(); | |
228 WB_END | |
229 | |
230 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
231 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
232 size_t nr = g1->free_regions(); | |
233 return (jlong)nr; | |
234 WB_END | |
235 | |
236 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
237 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
238 ConcurrentMark* cm = g1->concurrent_mark(); | |
239 return cm->concurrent_marking_in_progress(); | |
240 WB_END | |
241 | |
242 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
243 return (jint)HeapRegion::GrainBytes; | |
244 WB_END | |
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245 #endif // INCLUDE_ALL_GCS |
5915 | 246 |
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247 #if INCLUDE_NMT |
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248 // Alloc memory using the test memory type so that we can use that to see if |
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249 // NMT picks it up correctly |
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250 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) |
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251 jlong addr = 0; |
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252 |
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253 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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254 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); |
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255 } |
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256 |
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257 return addr; |
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258 WB_END |
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259 |
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260 // Free the memory allocated by NMTAllocTest |
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261 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) |
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262 os::free((void*)(uintptr_t)mem, mtTest); |
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263 WB_END |
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264 |
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265 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) |
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266 jlong addr = 0; |
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267 |
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268 if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { |
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269 addr = (jlong)(uintptr_t)os::reserve_memory(size); |
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270 MemTracker::record_virtual_memory_type((address)addr, mtTest); |
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271 } |
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272 |
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273 return addr; |
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274 WB_END |
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275 |
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276 |
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277 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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278 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); |
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279 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); |
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280 WB_END |
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281 |
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282 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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283 os::uncommit_memory((char *)(uintptr_t)addr, size); |
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284 WB_END |
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285 |
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286 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) |
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287 os::release_memory((char *)(uintptr_t)addr, size); |
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288 WB_END |
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289 |
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290 // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature |
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291 WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) |
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292 |
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293 if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { |
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294 return false; |
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295 } |
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296 |
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297 return MemTracker::wbtest_wait_for_data_merge(); |
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298 WB_END |
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299 |
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300 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) |
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301 return MemTracker::tracking_level() == MemTracker::NMT_detail; |
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302 WB_END |
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303 |
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304 #endif // INCLUDE_NMT |
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305 |
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306 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { |
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307 assert(method != NULL, "method should not be null"); |
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308 ThreadToNativeFromVM ttn(thread); |
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309 return env->FromReflectedMethod(method); |
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310 } |
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311 |
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312 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) |
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313 MutexLockerEx mu(Compile_lock); |
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314 CodeCache::mark_all_nmethods_for_deoptimization(); |
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315 VM_Deoptimize op; |
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316 VMThread::execute(&op); |
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317 WB_END |
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318 |
12073 | 319 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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320 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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321 int result = 0; |
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322 CHECK_JNI_EXCEPTION_(env, result); |
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323 MutexLockerEx mu(Compile_lock); |
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324 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 325 nmethod* code; |
326 if (is_osr) { | |
327 int bci = InvocationEntryBci; | |
328 while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) { | |
329 code->mark_for_deoptimization(); | |
330 ++result; | |
331 bci = code->osr_entry_bci() + 1; | |
332 } | |
333 } else { | |
334 code = mh->code(); | |
335 } | |
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336 if (code != NULL) { |
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337 code->mark_for_deoptimization(); |
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338 ++result; |
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339 } |
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340 result += CodeCache::mark_for_deoptimization(mh()); |
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341 if (result > 0) { |
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342 VM_Deoptimize op; |
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343 VMThread::execute(&op); |
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344 } |
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345 return result; |
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346 WB_END |
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347 |
12073 | 348 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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349 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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350 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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351 MutexLockerEx mu(Compile_lock); |
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352 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 353 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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354 if (code == NULL) { |
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355 return JNI_FALSE; |
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356 } |
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357 return (code->is_alive() && !code->is_marked_for_deoptimization()); |
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358 WB_END |
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359 |
12073 | 360 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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361 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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362 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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363 MutexLockerEx mu(Compile_lock); |
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364 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 365 if (is_osr) { |
366 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); | |
367 } else { | |
368 return CompilationPolicy::can_be_compiled(mh, comp_level); | |
369 } | |
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370 WB_END |
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371 |
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372 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) |
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373 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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374 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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375 MutexLockerEx mu(Compile_lock); |
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376 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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377 return mh->queued_for_compilation(); |
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378 WB_END |
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379 |
12073 | 380 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) |
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381 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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382 CHECK_JNI_EXCEPTION_(env, CompLevel_none); |
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383 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 384 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); |
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385 return (code != NULL ? code->comp_level() : CompLevel_none); |
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386 WB_END |
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387 |
12073 | 388 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) |
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389 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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390 CHECK_JNI_EXCEPTION(env); |
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391 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 392 if (is_osr) { |
393 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); | |
394 } else { | |
395 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); | |
396 } | |
397 WB_END | |
398 | |
399 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) | |
400 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
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401 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); |
12073 | 402 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
403 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); | |
404 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); | |
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405 WB_END |
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406 |
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407 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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408 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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409 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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410 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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411 bool result = mh->dont_inline(); |
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412 mh->set_dont_inline(value == JNI_TRUE); |
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413 return result; |
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414 WB_END |
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415 |
12073 | 416 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) |
417 if (comp_level == CompLevel_any) { | |
418 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + | |
419 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; | |
420 } else { | |
421 return CompileBroker::queue_size(comp_level); | |
422 } | |
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423 WB_END |
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424 |
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425 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) |
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426 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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427 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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428 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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429 bool result = mh->force_inline(); |
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430 mh->set_force_inline(value == JNI_TRUE); |
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431 return result; |
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432 WB_END |
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433 |
12073 | 434 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) |
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435 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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436 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); |
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437 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
12073 | 438 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); |
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439 MutexLockerEx mu(Compile_lock); |
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440 return (mh->queued_for_compilation() || nm != NULL); |
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441 WB_END |
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442 |
17867 | 443 class VM_WhiteBoxOperation : public VM_Operation { |
444 public: | |
445 VM_WhiteBoxOperation() { } | |
446 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } | |
447 bool allow_nested_vm_operations() const { return true; } | |
448 }; | |
449 | |
450 class AlwaysFalseClosure : public BoolObjectClosure { | |
451 public: | |
452 bool do_object_b(oop p) { return false; } | |
453 }; | |
454 | |
455 static AlwaysFalseClosure always_false; | |
456 | |
457 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation { | |
458 public: | |
459 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { } | |
460 void doit() { | |
461 _mdo->clean_method_data(&always_false); | |
462 } | |
463 private: | |
464 MethodData* _mdo; | |
465 }; | |
466 | |
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467 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) |
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468 jmethodID jmid = reflected_method_to_jmid(thread, env, method); |
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469 CHECK_JNI_EXCEPTION(env); |
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470 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); |
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471 MutexLockerEx mu(Compile_lock); |
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472 MethodData* mdo = mh->method_data(); |
10107 | 473 MethodCounters* mcs = mh->method_counters(); |
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474 |
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475 if (mdo != NULL) { |
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476 mdo->init(); |
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477 ResourceMark rm; |
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478 int arg_count = mdo->method()->size_of_parameters(); |
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479 for (int i = 0; i < arg_count; i++) { |
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480 mdo->set_arg_modified(i, 0); |
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481 } |
17867 | 482 VM_WhiteBoxCleanMethodData op(mdo); |
483 VMThread::execute(&op); | |
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484 } |
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485 |
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486 mh->clear_not_c1_compilable(); |
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487 mh->clear_not_c2_compilable(); |
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488 mh->clear_not_c2_osr_compilable(); |
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489 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); |
10107 | 490 if (mcs != NULL) { |
491 mcs->backedge_counter()->init(); | |
492 mcs->invocation_counter()->init(); | |
493 mcs->set_interpreter_invocation_count(0); | |
494 mcs->set_interpreter_throwout_count(0); | |
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495 |
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496 #ifdef TIERED |
10107 | 497 mcs->set_rate(0.0F); |
498 mh->set_prev_event_count(0, THREAD); | |
499 mh->set_prev_time(0, THREAD); | |
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500 #endif |
10107 | 501 } |
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502 WB_END |
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503 |
8850 | 504 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) |
505 ResourceMark rm(THREAD); | |
506 int len; | |
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507 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); |
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508 return (StringTable::lookup(name, len) != NULL); |
8850 | 509 WB_END |
510 | |
511 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) | |
512 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); | |
513 Universe::heap()->collect(GCCause::_last_ditch_collection); | |
514 WB_END | |
515 | |
10157 | 516 |
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517 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) |
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518 // static+volatile in order to force the read to happen |
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519 // (not be eliminated by the compiler) |
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520 static char c; |
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521 static volatile char* p; |
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522 |
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523 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); |
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524 if (p == NULL) { |
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525 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); |
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526 } |
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527 |
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528 c = *p; |
10157 | 529 WB_END |
530 | |
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531 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) |
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532 const char* cpu_features = VM_Version::cpu_features(); |
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533 ThreadToNativeFromVM ttn(thread); |
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534 jstring features_string = env->NewStringUTF(cpu_features); |
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535 |
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536 CHECK_JNI_EXCEPTION_(env, NULL); |
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537 |
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538 return features_string; |
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539 WB_END |
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540 |
17817 | 541 |
542 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) | |
543 ResourceMark rm(THREAD); | |
544 jmethodID jmid = reflected_method_to_jmid(thread, env, method); | |
545 CHECK_JNI_EXCEPTION_(env, NULL); | |
546 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); | |
547 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); | |
548 jobjectArray result = NULL; | |
549 if (code == NULL) { | |
550 return result; | |
551 } | |
552 int insts_size = code->insts_size(); | |
553 | |
554 ThreadToNativeFromVM ttn(thread); | |
555 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); | |
556 CHECK_JNI_EXCEPTION_(env, NULL); | |
557 result = env->NewObjectArray(2, clazz, NULL); | |
558 if (result == NULL) { | |
559 return result; | |
560 } | |
561 | |
562 clazz = env->FindClass(vmSymbols::java_lang_Integer()->as_C_string()); | |
563 CHECK_JNI_EXCEPTION_(env, NULL); | |
564 jmethodID constructor = env->GetMethodID(clazz, vmSymbols::object_initializer_name()->as_C_string(), vmSymbols::int_void_signature()->as_C_string()); | |
565 CHECK_JNI_EXCEPTION_(env, NULL); | |
566 jobject obj = env->NewObject(clazz, constructor, code->comp_level()); | |
567 CHECK_JNI_EXCEPTION_(env, NULL); | |
568 env->SetObjectArrayElement(result, 0, obj); | |
569 | |
570 jbyteArray insts = env->NewByteArray(insts_size); | |
571 CHECK_JNI_EXCEPTION_(env, NULL); | |
572 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); | |
573 env->SetObjectArrayElement(result, 1, insts); | |
574 | |
575 return result; | |
576 WB_END | |
577 | |
578 | |
5978
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579 //Some convenience methods to deal with objects from java |
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580 int WhiteBox::offset_for_field(const char* field_name, oop object, |
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581 Symbol* signature_symbol) { |
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582 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); |
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583 Thread* THREAD = Thread::current(); |
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584 |
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585 //Get the class of our object |
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586 Klass* arg_klass = object->klass(); |
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587 //Turn it into an instance-klass |
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588 InstanceKlass* ik = InstanceKlass::cast(arg_klass); |
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589 |
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590 //Create symbols to look for in the class |
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591 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), |
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592 THREAD); |
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593 |
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594 //To be filled in with an offset of the field we're looking for |
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595 fieldDescriptor fd; |
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596 |
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597 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); |
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598 if (res == NULL) { |
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599 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), |
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600 name_symbol->as_C_string()); |
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601 fatal("Invalid layout of preloaded class"); |
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602 } |
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603 |
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604 //fetch the field at the offset we've found |
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605 int dest_offset = fd.offset(); |
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606 |
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607 return dest_offset; |
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608 } |
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609 |
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610 |
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611 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { |
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612 int offset = offset_for_field(field_name, object, |
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613 vmSymbols::string_signature()); |
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614 oop string = object->obj_field(offset); |
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615 if (string == NULL) { |
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616 return NULL; |
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617 } |
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618 const char* ret = java_lang_String::as_utf8_string(string); |
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619 return ret; |
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620 } |
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621 |
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622 bool WhiteBox::lookup_bool(const char* field_name, oop object) { |
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623 int offset = |
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624 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
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625 bool ret = (object->bool_field(offset) == JNI_TRUE); |
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626 return ret; |
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627 } |
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628 |
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629 |
5915 | 630 #define CC (char*) |
631 | |
632 static JNINativeMethod methods[] = { | |
633 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
634 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
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635 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, |
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636 {CC"parseCommandLine", |
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637 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", |
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638 (void*) &WB_ParseCommandLine |
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639 }, |
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640 {CC"getCompressedOopsMaxHeapSize", CC"()J", |
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641 (void*)&WB_GetCompressedOopsMaxHeapSize}, |
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642 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, |
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643 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, |
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644 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, |
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645 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, |
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646 #if INCLUDE_ALL_GCS |
5915 | 647 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, |
648 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
649 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
650 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
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651 #endif // INCLUDE_ALL_GCS |
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652 #if INCLUDE_NMT |
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653 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, |
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654 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, |
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655 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, |
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656 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, |
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657 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, |
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658 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, |
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659 {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, |
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660 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, |
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661 #endif // INCLUDE_NMT |
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662 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, |
12073 | 663 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I", |
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664 (void*)&WB_DeoptimizeMethod }, |
12073 | 665 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z", |
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666 (void*)&WB_IsMethodCompiled }, |
12073 | 667 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z", |
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668 (void*)&WB_IsMethodCompilable}, |
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669 {CC"isMethodQueuedForCompilation", |
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670 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, |
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671 {CC"makeMethodNotCompilable", |
12073 | 672 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, |
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673 {CC"testSetDontInlineMethod", |
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674 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, |
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675 {CC"getMethodCompilationLevel", |
12073 | 676 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, |
677 {CC"getMethodEntryBci", | |
678 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, | |
679 {CC"getCompileQueueSize", | |
680 CC"(I)I", (void*)&WB_GetCompileQueueSize}, | |
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681 {CC"testSetForceInlineMethod", |
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682 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, |
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683 {CC"enqueueMethodForCompilation", |
12073 | 684 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, |
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685 {CC"clearMethodState", |
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686 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, |
8850 | 687 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, |
688 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, | |
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689 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, |
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690 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, |
17817 | 691 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", |
692 (void*)&WB_GetNMethod }, | |
5915 | 693 }; |
694 | |
695 #undef CC | |
696 | |
697 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
698 { | |
699 if (WhiteBoxAPI) { | |
700 // Make sure that wbclass is loaded by the null classloader | |
701 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
702 Handle loader(ikh->class_loader()); | |
703 if (loader.is_null()) { | |
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704 ResourceMark rm; |
5915 | 705 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
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706 bool result = true; |
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707 // one by one registration natives for exception catching |
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708 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
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709 CHECK_JNI_EXCEPTION(env); |
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710 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
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711 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
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712 result = false; |
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713 jthrowable throwable_obj = env->ExceptionOccurred(); |
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714 if (throwable_obj != NULL) { |
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715 env->ExceptionClear(); |
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716 if (env->IsInstanceOf(throwable_obj, exceptionKlass)) { |
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717 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
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718 // ignoring the exception |
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719 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
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720 } |
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721 } else { |
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722 // register is failed w/o exception or w/ unexpected exception |
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723 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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724 env->UnregisterNatives(wbclass); |
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725 break; |
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726 } |
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727 } |
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728 } |
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729 |
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730 if (result) { |
5915 | 731 WhiteBox::set_used(); |
732 } | |
733 } | |
734 } | |
735 } | |
736 JVM_END |