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annotate test/testlibrary/whitebox/sun/hotspot/WhiteBox.java @ 20553:417e3b8d04c5

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8059100: SIGSEGV VirtualMemoryTracker::remove_released_region Summary: Disallow increasing native memory tracking level Reviewed-by: hseigel, ctornqvi, gtriantafill
author coleenp
date Fri, 10 Oct 2014 19:36:12 +0000
parents b509b7ff561c
children 4cb90023bf2b
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1 /*
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 package sun.hotspot;
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26
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27 import java.lang.reflect.Executable;
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28 import java.util.Arrays;
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29 import java.util.List;
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30 import java.util.function.Function;
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31 import java.util.stream.Stream;
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32 import java.security.BasicPermission;
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33
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34 import sun.hotspot.parser.DiagnosticCommand;
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35
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36 public class WhiteBox {
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37
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38 @SuppressWarnings("serial")
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39 public static class WhiteBoxPermission extends BasicPermission {
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40 public WhiteBoxPermission(String s) {
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41 super(s);
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42 }
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43 }
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44
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45 private WhiteBox() {}
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46 private static final WhiteBox instance = new WhiteBox();
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47 private static native void registerNatives();
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48
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49 /**
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50 * Returns the singleton WhiteBox instance.
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51 *
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52 * The returned WhiteBox object should be carefully guarded
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53 * by the caller, since it can be used to read and write data
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54 * at arbitrary memory addresses. It must never be passed to
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55 * untrusted code.
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56 */
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57 public synchronized static WhiteBox getWhiteBox() {
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58 SecurityManager sm = System.getSecurityManager();
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59 if (sm != null) {
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60 sm.checkPermission(new WhiteBoxPermission("getInstance"));
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61 }
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62 return instance;
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63 }
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64
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65 static {
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66 registerNatives();
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67 }
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68
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69 // Get the maximum heap size supporting COOPs
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70 public native long getCompressedOopsMaxHeapSize();
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71 // Arguments
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72 public native void printHeapSizes();
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73
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74 // Memory
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75 public native long getObjectAddress(Object o);
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76 public native int getHeapOopSize();
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77 public native boolean isObjectInOldGen(Object o);
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78 public native long getObjectSize(Object o);
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79
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80 // Runtime
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81 // Make sure class name is in the correct format
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82 public boolean isClassAlive(String name) {
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83 return isClassAlive0(name.replace('.', '/'));
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84 }
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85 private native boolean isClassAlive0(String name);
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86
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87 // G1
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88 public native boolean g1InConcurrentMark();
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89 public native boolean g1IsHumongous(Object o);
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90 public native long g1NumFreeRegions();
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91 public native int g1RegionSize();
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92 public native Object[] parseCommandLine(String commandline, DiagnosticCommand[] args);
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93
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94 // NMT
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95 public native long NMTMalloc(long size);
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96 public native void NMTFree(long mem);
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97 public native long NMTReserveMemory(long size);
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98 public native void NMTCommitMemory(long addr, long size);
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99 public native void NMTUncommitMemory(long addr, long size);
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100 public native void NMTReleaseMemory(long addr, long size);
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101 public native void NMTOverflowHashBucket(long num);
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102 public native long NMTMallocWithPseudoStack(long size, int index);
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103 public native boolean NMTIsDetailSupported();
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104 public native boolean NMTChangeTrackingLevel();
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105
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106 // Compiler
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107 public native void deoptimizeAll();
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108 public boolean isMethodCompiled(Executable method) {
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109 return isMethodCompiled(method, false /*not osr*/);
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110 }
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111 public native boolean isMethodCompiled(Executable method, boolean isOsr);
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112 public boolean isMethodCompilable(Executable method) {
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113 return isMethodCompilable(method, -1 /*any*/);
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114 }
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115 public boolean isMethodCompilable(Executable method, int compLevel) {
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116 return isMethodCompilable(method, compLevel, false /*not osr*/);
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117 }
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118 public native boolean isMethodCompilable(Executable method, int compLevel, boolean isOsr);
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119 public native boolean isMethodQueuedForCompilation(Executable method);
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120 public int deoptimizeMethod(Executable method) {
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121 return deoptimizeMethod(method, false /*not osr*/);
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122 }
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123 public native int deoptimizeMethod(Executable method, boolean isOsr);
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124 public void makeMethodNotCompilable(Executable method) {
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125 makeMethodNotCompilable(method, -1 /*any*/);
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126 }
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127 public void makeMethodNotCompilable(Executable method, int compLevel) {
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128 makeMethodNotCompilable(method, compLevel, false /*not osr*/);
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129 }
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130 public native void makeMethodNotCompilable(Executable method, int compLevel, boolean isOsr);
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131 public int getMethodCompilationLevel(Executable method) {
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132 return getMethodCompilationLevel(method, false /*not ost*/);
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133 }
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134 public native int getMethodCompilationLevel(Executable method, boolean isOsr);
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135 public native boolean testSetDontInlineMethod(Executable method, boolean value);
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136 public int getCompileQueuesSize() {
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137 return getCompileQueueSize(-1 /*any*/);
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138 }
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139 public native int getCompileQueueSize(int compLevel);
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140 public native boolean testSetForceInlineMethod(Executable method, boolean value);
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141 public boolean enqueueMethodForCompilation(Executable method, int compLevel) {
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142 return enqueueMethodForCompilation(method, compLevel, -1 /*InvocationEntryBci*/);
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143 }
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144 public native boolean enqueueMethodForCompilation(Executable method, int compLevel, int entry_bci);
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145 public native void clearMethodState(Executable method);
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146 public native int getMethodEntryBci(Executable method);
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147 public native Object[] getNMethod(Executable method, boolean isOsr);
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148
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149 // Intered strings
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150 public native boolean isInStringTable(String str);
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151
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152 // Memory
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153 public native void readReservedMemory();
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154 public native long allocateMetaspace(ClassLoader classLoader, long size);
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155 public native void freeMetaspace(ClassLoader classLoader, long addr, long size);
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156 public native long incMetaspaceCapacityUntilGC(long increment);
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157 public native long metaspaceCapacityUntilGC();
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mikael
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158
20357
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tschatzl
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159 // force Young GC
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tschatzl
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160 public native void youngGC();
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tschatzl
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161
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mgerdin
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162 // force Full GC
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mgerdin
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163 public native void fullGC();
13053
9d8b29a0548c 8027237: New tests on ReservedSpace/VirtualSpace classes
mgerdin
parents: 12233
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164
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mgerdin
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165 // Tests on ReservedSpace/VirtualSpace classes
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mgerdin
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166 public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
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mgerdin
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167 public native void runMemoryUnitTests();
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mgerdin
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168 public native void readFromNoaccessArea();
20362
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zgu
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169 public native long getThreadStackSize();
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zgu
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170 public native long getThreadRemainingStackSize();
13053
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mgerdin
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171
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iignatyev
parents: 13053
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172 // CPU features
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iignatyev
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173 public native String getCPUFeatures();
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iignatyev
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174
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sjohanss
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175 // Native extensions
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sjohanss
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176 public native long getHeapUsageForContext(int context);
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sjohanss
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177 public native long getHeapRegionCountForContext(int context);
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sjohanss
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178 public native int getContextForObject(Object obj);
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sjohanss
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179 public native void printRegionInfo(int context);
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sjohanss
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180
20362
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zgu
parents: 20361
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181 // VM flags
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zgu
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182 public native void setBooleanVMFlag(String name, boolean value);
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zgu
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183 public native void setIntxVMFlag(String name, long value);
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zgu
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184 public native void setUintxVMFlag(String name, long value);
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zgu
parents: 20361
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185 public native void setUint64VMFlag(String name, long value);
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zgu
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186 public native void setStringVMFlag(String name, String value);
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zgu
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187 public native void setDoubleVMFlag(String name, double value);
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zgu
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188 public native Boolean getBooleanVMFlag(String name);
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zgu
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189 public native Long getIntxVMFlag(String name);
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zgu
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190 public native Long getUintxVMFlag(String name);
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zgu
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191 public native Long getUint64VMFlag(String name);
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zgu
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192 public native String getStringVMFlag(String name);
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zgu
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193 public native Double getDoubleVMFlag(String name);
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zgu
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194 private final List<Function<String,Object>> flagsGetters = Arrays.asList(
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zgu
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195 this::getBooleanVMFlag, this::getIntxVMFlag, this::getUintxVMFlag,
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zgu
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196 this::getUint64VMFlag, this::getStringVMFlag, this::getDoubleVMFlag);
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zgu
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197
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zgu
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198 public Object getVMFlag(String name) {
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zgu
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199 return flagsGetters.stream()
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zgu
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200 .map(f -> f.apply(name))
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zgu
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201 .filter(x -> x != null)
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zgu
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202 .findAny()
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zgu
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203 .orElse(null);
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zgu
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204 }
5915
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mgerdin
parents:
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205 }