author | never |
Wed, 30 Mar 2011 07:47:19 -0700 | |
changeset 8878 | a6283814032c |
parent 8725 | 8c1e3dd5fe1b |
child 10517 | f92c9ff3a15f |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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25 |
package sun.jvm.hotspot.runtime; |
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27 |
import java.io.*; |
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import java.net.*; |
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import java.util.*; |
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import java.util.regex.*; |
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import sun.jvm.hotspot.code.*; |
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import sun.jvm.hotspot.c1.*; |
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import sun.jvm.hotspot.debugger.*; |
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import sun.jvm.hotspot.interpreter.*; |
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import sun.jvm.hotspot.memory.*; |
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import sun.jvm.hotspot.oops.*; |
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import sun.jvm.hotspot.types.*; |
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import sun.jvm.hotspot.utilities.*; |
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import sun.jvm.hotspot.runtime.*; |
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/** <P> This class encapsulates the global state of the VM; the |
|
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universe, object heap, interpreter, etc. It is a Singleton and |
|
43 |
must be initialized with a call to initialize() before calling |
|
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getVM(). </P> |
|
45 |
||
46 |
<P> Many auxiliary classes (i.e., most of the VMObjects) keep |
|
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needed field offsets in the form of static Field objects. In a |
|
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debugging system, the VM might be shutdown and re-initialized (on |
|
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a differently-configured build, i.e., 32- vs. 64-bit), and all old |
|
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cached state (including fields and field offsets) must be |
|
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flushed. </P> |
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||
53 |
<P> An Observer pattern is used to implement the initialization of |
|
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such classes. Each such class, in its static initializer, |
|
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registers an Observer with the VM class via |
|
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VM.registerVMInitializedObserver(). This Observer is guaranteed to |
|
57 |
be notified whenever the VM is initialized (or re-initialized). To |
|
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implement the first-time initialization, the observer is also |
|
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notified when it registers itself with the VM. (For bootstrapping |
|
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reasons, this implies that the constructor of VM can not |
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instantiate any such objects, since VM.soleInstance will not have |
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been set yet. This is a bootstrapping issue which may have to be |
|
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revisited later.) </P> |
|
64 |
*/ |
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||
66 |
public class VM { |
|
67 |
private static VM soleInstance; |
|
68 |
private static List vmInitializedObservers = new ArrayList(); |
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private List vmResumedObservers = new ArrayList(); |
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70 |
private List vmSuspendedObservers = new ArrayList(); |
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private TypeDataBase db; |
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private boolean isBigEndian; |
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/** This is only present if in a debugging system */ |
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private JVMDebugger debugger; |
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75 |
private long stackBias; |
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76 |
private long logAddressSize; |
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private Universe universe; |
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private ObjectHeap heap; |
|
79 |
private SymbolTable symbols; |
|
80 |
private StringTable strings; |
|
81 |
private SystemDictionary dict; |
|
82 |
private Threads threads; |
|
83 |
private ObjectSynchronizer synchronizer; |
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84 |
private JNIHandles handles; |
|
85 |
private Interpreter interpreter; |
|
86 |
private StubRoutines stubRoutines; |
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private Bytes bytes; |
|
88 |
/** Flags indicating whether we are attached to a core, C1, or C2 build */ |
|
89 |
private boolean usingClientCompiler; |
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90 |
private boolean usingServerCompiler; |
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91 |
/** Flag indicating whether UseTLAB is turned on */ |
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92 |
private boolean useTLAB; |
|
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/** alignment constants */ |
|
94 |
private boolean isLP64; |
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private int bytesPerLong; |
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private int objectAlignmentInBytes; |
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private int minObjAlignmentInBytes; |
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private int logMinObjAlignmentInBytes; |
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private int heapWordSize; |
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private int heapOopSize; |
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private int oopSize; |
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/** This is only present in a non-core build */ |
103 |
private CodeCache codeCache; |
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104 |
/** This is only present in a C1 build */ |
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105 |
private Runtime1 runtime1; |
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106 |
/** These constants come from globalDefinitions.hpp */ |
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107 |
private int invocationEntryBCI; |
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108 |
private int invalidOSREntryBCI; |
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109 |
private ReversePtrs revPtrs; |
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110 |
private VMRegImpl vmregImpl; |
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111 |
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112 |
// System.getProperties from debuggee VM |
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private Properties sysProps; |
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114 |
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115 |
// VM version strings come from Abstract_VM_Version class |
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private String vmRelease; |
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117 |
private String vmInternalInfo; |
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119 |
private Flag[] commandLineFlags; |
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120 |
private Map flagsMap; |
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121 |
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122 |
private static Type intxType; |
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private static Type uintxType; |
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124 |
private static CIntegerType boolType; |
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private Boolean sharingEnabled; |
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private Boolean compressedOopsEnabled; |
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// command line flags supplied to VM - see struct Flag in globals.hpp |
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129 |
public static final class Flag { |
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130 |
private String type; |
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131 |
private String name; |
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132 |
private Address addr; |
|
133 |
private String kind; |
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134 |
||
135 |
private Flag(String type, String name, Address addr, String kind) { |
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136 |
this.type = type; |
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137 |
this.name = name; |
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138 |
this.addr = addr; |
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139 |
this.kind = kind; |
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140 |
} |
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141 |
||
142 |
public String getType() { |
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143 |
return type; |
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144 |
} |
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145 |
||
146 |
public String getName() { |
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147 |
return name; |
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148 |
} |
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149 |
||
150 |
public Address getAddress() { |
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151 |
return addr; |
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152 |
} |
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153 |
||
154 |
public String getKind() { |
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155 |
return kind; |
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156 |
} |
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157 |
||
158 |
public boolean isBool() { |
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159 |
return type.equals("bool"); |
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160 |
} |
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161 |
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162 |
public boolean getBool() { |
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163 |
if (Assert.ASSERTS_ENABLED) { |
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164 |
Assert.that(isBool(), "not a bool flag!"); |
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} |
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return addr.getCIntegerAt(0, boolType.getSize(), boolType.isUnsigned()) |
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!= 0; |
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} |
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public boolean isIntx() { |
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return type.equals("intx"); |
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} |
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173 |
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public long getIntx() { |
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175 |
if (Assert.ASSERTS_ENABLED) { |
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Assert.that(isIntx(), "not a intx flag!"); |
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} |
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return addr.getCIntegerAt(0, intxType.getSize(), false); |
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} |
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public boolean isUIntx() { |
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return type.equals("uintx"); |
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} |
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public long getUIntx() { |
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if (Assert.ASSERTS_ENABLED) { |
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Assert.that(isUIntx(), "not a uintx flag!"); |
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} |
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return addr.getCIntegerAt(0, uintxType.getSize(), true); |
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} |
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public String getValue() { |
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if (isBool()) { |
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return new Boolean(getBool()).toString(); |
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} else if (isIntx()) { |
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return new Long(getIntx()).toString(); |
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} else if (isUIntx()) { |
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return new Long(getUIntx()).toString(); |
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} else { |
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return null; |
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} |
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} |
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}; |
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205 |
private static void checkVMVersion(String vmRelease) { |
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if (System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null) { |
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// read sa build version. |
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String versionProp = "sun.jvm.hotspot.runtime.VM.saBuildVersion"; |
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String saVersion = saProps.getProperty(versionProp); |
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if (saVersion == null) |
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throw new RuntimeException("Missing property " + versionProp); |
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// Strip nonproduct VM version substring (note: saVersion doesn't have it). |
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String vmVersion = vmRelease.replaceAll("(-fastdebug)|(-debug)|(-jvmg)|(-optimized)|(-profiled)",""); |
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216 |
if (saVersion.equals(vmVersion)) { |
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// Exact match |
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return; |
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} |
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if (saVersion.indexOf('-') == saVersion.lastIndexOf('-') && |
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vmVersion.indexOf('-') == vmVersion.lastIndexOf('-')) { |
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// Throw exception if different release versions: |
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// <major>.<minor>-b<n> |
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throw new VMVersionMismatchException(saVersion, vmRelease); |
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} else { |
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// Otherwise print warning to allow mismatch not release versions |
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// during development. |
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System.err.println("WARNING: Hotspot VM version " + vmRelease + |
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" does not match with SA version " + saVersion + |
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"." + " You may see unexpected results. "); |
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} |
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} else { |
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System.err.println("WARNING: You have disabled SA and VM version check. You may be " + |
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"using incompatible version of SA and you may see unexpected " + |
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"results."); |
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} |
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} |
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private static final boolean disableDerivedPrinterTableCheck; |
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private static final Properties saProps; |
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241 |
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242 |
static { |
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saProps = new Properties(); |
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URL url = null; |
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try { |
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url = VM.class.getClassLoader().getResource("sa.properties"); |
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saProps.load(new BufferedInputStream(url.openStream())); |
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} catch (Exception e) { |
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throw new RuntimeException("Unable to load properties " + |
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(url == null ? "null" : url.toString()) + |
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": " + e.getMessage()); |
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} |
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disableDerivedPrinterTableCheck = System.getProperty("sun.jvm.hotspot.runtime.VM.disableDerivedPointerTableCheck") != null; |
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} |
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256 |
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257 |
private VM(TypeDataBase db, JVMDebugger debugger, boolean isBigEndian) { |
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this.db = db; |
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this.debugger = debugger; |
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this.isBigEndian = isBigEndian; |
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261 |
||
262 |
// Note that we don't construct universe, heap, threads, |
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263 |
// interpreter, or stubRoutines here (any more). The current |
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// initialization mechanisms require that the VM be completely set |
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// up (i.e., out of its constructor, with soleInstance assigned) |
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// before their static initializers are run. |
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267 |
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268 |
if (db.getAddressSize() == 4) { |
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logAddressSize = 2; |
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270 |
} else if (db.getAddressSize() == 8) { |
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logAddressSize = 3; |
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272 |
} else { |
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273 |
throw new RuntimeException("Address size " + db.getAddressSize() + " not yet supported"); |
|
274 |
} |
|
275 |
||
276 |
// read VM version info |
|
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try { |
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Type vmVersion = db.lookupType("Abstract_VM_Version"); |
|
279 |
Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); |
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vmRelease = CStringUtilities.getString(releaseAddr); |
|
281 |
Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); |
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282 |
vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); |
|
283 |
} catch (Exception exp) { |
|
284 |
throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); |
|
285 |
} |
|
286 |
||
287 |
checkVMVersion(vmRelease); |
|
288 |
||
289 |
stackBias = db.lookupIntConstant("STACK_BIAS").intValue(); |
|
290 |
invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue(); |
|
291 |
invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue(); |
|
292 |
||
293 |
// We infer the presence of C1 or C2 from a couple of fields we |
|
294 |
// already have present in the type database |
|
295 |
{ |
|
296 |
Type type = db.lookupType("methodOopDesc"); |
|
297 |
if (type.getField("_from_compiled_entry", false, false) == null) { |
|
298 |
// Neither C1 nor C2 is present |
|
299 |
usingClientCompiler = false; |
|
300 |
usingServerCompiler = false; |
|
301 |
} else { |
|
302 |
// Determine whether C2 is present |
|
303 |
if (type.getField("_interpreter_invocation_count", false, false) != null) { |
|
304 |
usingServerCompiler = true; |
|
305 |
} else { |
|
306 |
usingClientCompiler = true; |
|
307 |
} |
|
308 |
} |
|
309 |
} |
|
310 |
||
311 |
useTLAB = (db.lookupIntConstant("UseTLAB").intValue() != 0); |
|
312 |
||
313 |
if (debugger != null) { |
|
314 |
isLP64 = debugger.getMachineDescription().isLP64(); |
|
315 |
} |
|
316 |
bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); |
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heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
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oopSize = db.lookupIntConstant("oopSize").intValue(); |
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intxType = db.lookupType("intx"); |
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uintxType = db.lookupType("uintx"); |
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boolType = (CIntegerType) db.lookupType("bool"); |
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minObjAlignmentInBytes = getObjectAlignmentInBytes(); |
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if (minObjAlignmentInBytes == 8) { |
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logMinObjAlignmentInBytes = 3; |
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} else if (minObjAlignmentInBytes == 16) { |
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logMinObjAlignmentInBytes = 4; |
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} else { |
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throw new RuntimeException("Object alignment " + minObjAlignmentInBytes + " not yet supported"); |
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} |
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332 |
|
2739 | 333 |
if (isCompressedOopsEnabled()) { |
334 |
// Size info for oops within java objects is fixed |
|
335 |
heapOopSize = (int)getIntSize(); |
|
336 |
} else { |
|
337 |
heapOopSize = (int)getOopSize(); |
|
338 |
} |
|
1 | 339 |
} |
340 |
||
341 |
/** This could be used by a reflective runtime system */ |
|
342 |
public static void initialize(TypeDataBase db, boolean isBigEndian) { |
|
343 |
if (soleInstance != null) { |
|
344 |
throw new RuntimeException("Attempt to initialize VM twice"); |
|
345 |
} |
|
346 |
soleInstance = new VM(db, null, isBigEndian); |
|
347 |
for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
|
348 |
((Observer) iter.next()).update(null, null); |
|
349 |
} |
|
350 |
} |
|
351 |
||
352 |
/** This is used by the debugging system */ |
|
353 |
public static void initialize(TypeDataBase db, JVMDebugger debugger) { |
|
354 |
if (soleInstance != null) { |
|
355 |
throw new RuntimeException("Attempt to initialize VM twice"); |
|
356 |
} |
|
357 |
soleInstance = new VM(db, debugger, debugger.getMachineDescription().isBigEndian()); |
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|
1 | 359 |
for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
360 |
((Observer) iter.next()).update(null, null); |
|
361 |
} |
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2262 | 362 |
|
2739 | 363 |
debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(), |
364 |
Universe.getNarrowOopShift()); |
|
1 | 365 |
} |
366 |
||
367 |
/** This is used by the debugging system */ |
|
368 |
public static void shutdown() { |
|
369 |
soleInstance = null; |
|
370 |
} |
|
371 |
||
372 |
/** This is used by both the debugger and any runtime system. It is |
|
373 |
the basic mechanism by which classes which mimic underlying VM |
|
374 |
functionality cause themselves to be initialized. The given |
|
375 |
observer will be notified (with arguments (null, null)) when the |
|
376 |
VM is re-initialized, as well as when it registers itself with |
|
377 |
the VM. */ |
|
378 |
public static void registerVMInitializedObserver(Observer o) { |
|
379 |
vmInitializedObservers.add(o); |
|
380 |
o.update(null, null); |
|
381 |
} |
|
382 |
||
383 |
/** This is the primary accessor used by both the debugger and any |
|
384 |
potential runtime system */ |
|
385 |
public static VM getVM() { |
|
386 |
if (soleInstance == null) { |
|
387 |
throw new RuntimeException("VM.initialize() was not yet called"); |
|
388 |
} |
|
389 |
return soleInstance; |
|
390 |
} |
|
391 |
||
392 |
/** This is only used by the debugging system. The given observer |
|
393 |
will be notified if the underlying VM resumes execution. NOTE |
|
394 |
that the given observer is not triggered if the VM is currently |
|
395 |
running and therefore differs in behavior from {@link |
|
396 |
#registerVMInitializedObserver} (because of the possibility of |
|
397 |
race conditions if the observer is added while the VM is being |
|
398 |
suspended or resumed). */ |
|
399 |
public void registerVMResumedObserver(Observer o) { |
|
400 |
vmResumedObservers.add(o); |
|
401 |
} |
|
402 |
||
403 |
/** This is only used by the debugging system. The given observer |
|
404 |
will be notified if the underlying VM suspends execution. NOTE |
|
405 |
that the given observer is not triggered if the VM is currently |
|
406 |
suspended and therefore differs in behavior from {@link |
|
407 |
#registerVMInitializedObserver} (because of the possibility of |
|
408 |
race conditions if the observer is added while the VM is being |
|
409 |
suspended or resumed). */ |
|
410 |
public void registerVMSuspendedObserver(Observer o) { |
|
411 |
vmSuspendedObservers.add(o); |
|
412 |
} |
|
413 |
||
414 |
/** This is only used by the debugging system. Informs all |
|
415 |
registered resumption observers that the VM has been resumed. |
|
416 |
The application is responsible for actually having performed the |
|
417 |
resumption. No OopHandles must be used after this point, as they |
|
418 |
may move in the target address space due to garbage |
|
419 |
collection. */ |
|
420 |
public void fireVMResumed() { |
|
421 |
for (Iterator iter = vmResumedObservers.iterator(); iter.hasNext(); ) { |
|
422 |
((Observer) iter.next()).update(null, null); |
|
423 |
} |
|
424 |
} |
|
425 |
||
426 |
/** This is only used by the debugging system. Informs all |
|
427 |
registered suspension observers that the VM has been suspended. |
|
428 |
The application is responsible for actually having performed the |
|
429 |
suspension. Garbage collection must be forbidden at this point; |
|
430 |
for example, a JPDA-level suspension is not adequate since the |
|
431 |
VM thread may still be running. */ |
|
432 |
public void fireVMSuspended() { |
|
433 |
for (Iterator iter = vmSuspendedObservers.iterator(); iter.hasNext(); ) { |
|
434 |
((Observer) iter.next()).update(null, null); |
|
435 |
} |
|
436 |
} |
|
437 |
||
438 |
/** Returns the OS this VM is running on. Notice that by delegating |
|
439 |
to the debugger we can transparently support remote |
|
440 |
debugging. */ |
|
441 |
public String getOS() { |
|
442 |
if (debugger != null) { |
|
443 |
return debugger.getOS(); |
|
444 |
} |
|
445 |
return PlatformInfo.getOS(); |
|
446 |
} |
|
447 |
||
448 |
/** Returns the CPU this VM is running on. Notice that by delegating |
|
449 |
to the debugger we can transparently support remote |
|
450 |
debugging. */ |
|
451 |
public String getCPU() { |
|
452 |
if (debugger != null) { |
|
453 |
return debugger.getCPU(); |
|
454 |
} |
|
455 |
return PlatformInfo.getCPU(); |
|
456 |
} |
|
457 |
||
458 |
public Type lookupType(String cTypeName) { |
|
459 |
return db.lookupType(cTypeName); |
|
460 |
} |
|
461 |
||
462 |
public Integer lookupIntConstant(String name) { |
|
463 |
return db.lookupIntConstant(name); |
|
464 |
} |
|
465 |
||
466 |
public long getAddressSize() { |
|
467 |
return db.getAddressSize(); |
|
468 |
} |
|
469 |
||
470 |
public long getOopSize() { |
|
360
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|
471 |
return oopSize; |
1 | 472 |
} |
473 |
||
474 |
public long getLogAddressSize() { |
|
475 |
return logAddressSize; |
|
476 |
} |
|
477 |
||
360
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|
478 |
public long getIntSize() { |
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|
479 |
return db.getJIntType().getSize(); |
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|
480 |
} |
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|
481 |
|
1 | 482 |
/** NOTE: this offset is in BYTES in this system! */ |
483 |
public long getStackBias() { |
|
484 |
return stackBias; |
|
485 |
} |
|
486 |
||
487 |
/** Indicates whether the underlying machine supports the LP64 data |
|
488 |
model. This is needed for conditionalizing code in a few places */ |
|
489 |
public boolean isLP64() { |
|
490 |
if (Assert.ASSERTS_ENABLED) { |
|
491 |
Assert.that(isDebugging(), "Debugging system only for now"); |
|
492 |
} |
|
493 |
return isLP64; |
|
494 |
} |
|
495 |
||
496 |
/** Get bytes-per-long == long/double natural alignment. */ |
|
497 |
public int getBytesPerLong() { |
|
498 |
return bytesPerLong; |
|
499 |
} |
|
500 |
||
501 |
/** Get minimum object alignment in bytes. */ |
|
502 |
public int getMinObjAlignmentInBytes() { |
|
503 |
return minObjAlignmentInBytes; |
|
504 |
} |
|
360
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|
505 |
public int getLogMinObjAlignmentInBytes() { |
21d113ecbf6a
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|
506 |
return logMinObjAlignmentInBytes; |
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|
507 |
} |
1 | 508 |
|
360
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|
509 |
public int getHeapWordSize() { |
21d113ecbf6a
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diff
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|
510 |
return heapWordSize; |
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diff
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|
511 |
} |
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|
512 |
|
21d113ecbf6a
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diff
changeset
|
513 |
public int getHeapOopSize() { |
21d113ecbf6a
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|
514 |
return heapOopSize; |
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|
515 |
} |
1 | 516 |
/** Utility routine for getting data structure alignment correct */ |
517 |
public long alignUp(long size, long alignment) { |
|
518 |
return (size + alignment - 1) & ~(alignment - 1); |
|
519 |
} |
|
520 |
||
521 |
/** Utility routine for getting data structure alignment correct */ |
|
522 |
public long alignDown(long size, long alignment) { |
|
523 |
return size & ~(alignment - 1); |
|
524 |
} |
|
525 |
||
526 |
/** Utility routine for building an int from two "unsigned" 16-bit |
|
527 |
shorts */ |
|
528 |
public int buildIntFromShorts(short low, short high) { |
|
529 |
return (((int) high) << 16) | (((int) low) & 0xFFFF); |
|
530 |
} |
|
531 |
||
532 |
/** Utility routine for building a long from two "unsigned" 32-bit |
|
533 |
ints in <b>platform-dependent</b> order */ |
|
534 |
public long buildLongFromIntsPD(int oneHalf, int otherHalf) { |
|
535 |
if (isBigEndian) { |
|
536 |
return (((long) otherHalf) << 32) | (((long) oneHalf) & 0x00000000FFFFFFFFL); |
|
537 |
} else{ |
|
538 |
return (((long) oneHalf) << 32) | (((long) otherHalf) & 0x00000000FFFFFFFFL); |
|
539 |
} |
|
540 |
} |
|
541 |
||
542 |
/** Indicates whether Thread-Local Allocation Buffers are used */ |
|
543 |
public boolean getUseTLAB() { |
|
544 |
return useTLAB; |
|
545 |
} |
|
546 |
||
547 |
public TypeDataBase getTypeDataBase() { |
|
548 |
return db; |
|
549 |
} |
|
550 |
||
551 |
public Universe getUniverse() { |
|
552 |
if (universe == null) { |
|
553 |
universe = new Universe(); |
|
554 |
} |
|
555 |
return universe; |
|
556 |
} |
|
557 |
||
558 |
public ObjectHeap getObjectHeap() { |
|
559 |
if (heap == null) { |
|
560 |
heap = new ObjectHeap(db); |
|
561 |
} |
|
562 |
return heap; |
|
563 |
} |
|
564 |
||
565 |
public SymbolTable getSymbolTable() { |
|
566 |
if (symbols == null) { |
|
567 |
symbols = SymbolTable.getTheTable(); |
|
568 |
} |
|
569 |
return symbols; |
|
570 |
} |
|
571 |
||
572 |
public StringTable getStringTable() { |
|
573 |
if (strings == null) { |
|
574 |
strings = StringTable.getTheTable(); |
|
575 |
} |
|
576 |
return strings; |
|
577 |
} |
|
578 |
||
579 |
public SystemDictionary getSystemDictionary() { |
|
580 |
if (dict == null) { |
|
581 |
dict = new SystemDictionary(); |
|
582 |
} |
|
583 |
return dict; |
|
584 |
} |
|
585 |
||
586 |
public Threads getThreads() { |
|
587 |
if (threads == null) { |
|
588 |
threads = new Threads(); |
|
589 |
} |
|
590 |
return threads; |
|
591 |
} |
|
592 |
||
593 |
public ObjectSynchronizer getObjectSynchronizer() { |
|
594 |
if (synchronizer == null) { |
|
595 |
synchronizer = new ObjectSynchronizer(); |
|
596 |
} |
|
597 |
return synchronizer; |
|
598 |
} |
|
599 |
||
600 |
public JNIHandles getJNIHandles() { |
|
601 |
if (handles == null) { |
|
602 |
handles = new JNIHandles(); |
|
603 |
} |
|
604 |
return handles; |
|
605 |
} |
|
606 |
||
607 |
public Interpreter getInterpreter() { |
|
608 |
if (interpreter == null) { |
|
609 |
interpreter = new Interpreter(); |
|
610 |
} |
|
611 |
return interpreter; |
|
612 |
} |
|
613 |
||
614 |
public StubRoutines getStubRoutines() { |
|
615 |
if (stubRoutines == null) { |
|
616 |
stubRoutines = new StubRoutines(); |
|
617 |
} |
|
618 |
return stubRoutines; |
|
619 |
} |
|
620 |
||
621 |
public VMRegImpl getVMRegImplInfo() { |
|
622 |
if (vmregImpl == null) { |
|
623 |
vmregImpl = new VMRegImpl(); |
|
624 |
} |
|
625 |
return vmregImpl; |
|
626 |
} |
|
627 |
||
628 |
public Bytes getBytes() { |
|
629 |
if (bytes == null) { |
|
630 |
bytes = new Bytes(debugger.getMachineDescription()); |
|
631 |
} |
|
632 |
return bytes; |
|
633 |
} |
|
634 |
||
1135
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670
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changeset
|
635 |
/** Returns true if this is a isBigEndian, false otherwise */ |
9487203e5789
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
670
diff
changeset
|
636 |
public boolean isBigEndian() { |
9487203e5789
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
670
diff
changeset
|
637 |
return isBigEndian; |
9487203e5789
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
670
diff
changeset
|
638 |
} |
9487203e5789
6706829: Compressed Oops: add debug info for narrow oops
kvn
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670
diff
changeset
|
639 |
|
1 | 640 |
/** Returns true if this is a "core" build, false if either C1 or C2 |
641 |
is present */ |
|
642 |
public boolean isCore() { |
|
643 |
return (!(usingClientCompiler || usingServerCompiler)); |
|
644 |
} |
|
645 |
||
646 |
/** Returns true if this is a C1 build, false otherwise */ |
|
647 |
public boolean isClientCompiler() { |
|
648 |
return usingClientCompiler; |
|
649 |
} |
|
650 |
||
651 |
/** Returns true if this is a C2 build, false otherwise */ |
|
652 |
public boolean isServerCompiler() { |
|
653 |
return usingServerCompiler; |
|
654 |
} |
|
655 |
||
656 |
/** Returns true if C2 derived pointer table should be used, false otherwise */ |
|
657 |
public boolean useDerivedPointerTable() { |
|
658 |
return !disableDerivedPrinterTableCheck; |
|
659 |
} |
|
660 |
||
661 |
/** Returns the code cache; should not be used if is core build */ |
|
662 |
public CodeCache getCodeCache() { |
|
663 |
if (Assert.ASSERTS_ENABLED) { |
|
664 |
Assert.that(!isCore(), "noncore builds only"); |
|
665 |
} |
|
666 |
if (codeCache == null) { |
|
667 |
codeCache = new CodeCache(); |
|
668 |
} |
|
669 |
return codeCache; |
|
670 |
} |
|
671 |
||
672 |
/** Should only be called for C1 builds */ |
|
673 |
public Runtime1 getRuntime1() { |
|
674 |
if (Assert.ASSERTS_ENABLED) { |
|
675 |
Assert.that(isClientCompiler(), "C1 builds only"); |
|
676 |
} |
|
677 |
if (runtime1 == null) { |
|
678 |
runtime1 = new Runtime1(); |
|
679 |
} |
|
680 |
return runtime1; |
|
681 |
} |
|
682 |
||
683 |
/** Test to see whether we're in debugging mode (NOTE: this really |
|
684 |
should not be tested by this code; currently only used in |
|
685 |
StackFrameStream) */ |
|
686 |
public boolean isDebugging() { |
|
687 |
return (debugger != null); |
|
688 |
} |
|
689 |
||
690 |
/** This is only used by the debugging (i.e., non-runtime) system */ |
|
691 |
public JVMDebugger getDebugger() { |
|
692 |
if (debugger == null) { |
|
693 |
throw new RuntimeException("Attempt to use debugger in runtime system"); |
|
694 |
} |
|
695 |
return debugger; |
|
696 |
} |
|
697 |
||
698 |
/** Indicates whether a given program counter is in Java code. This |
|
699 |
includes but is not spanned by the interpreter and code cache. |
|
700 |
Only used in the debugging system, for implementing |
|
701 |
JavaThread.currentFrameGuess() on x86. */ |
|
702 |
public boolean isJavaPCDbg(Address addr) { |
|
703 |
// FIXME: this is not a complete enough set: must include areas |
|
704 |
// like vtable stubs |
|
705 |
return (getInterpreter().contains(addr) || |
|
706 |
getCodeCache().contains(addr)); |
|
707 |
} |
|
708 |
||
709 |
/** FIXME: figure out where to stick this */ |
|
710 |
public int getInvocationEntryBCI() { |
|
711 |
return invocationEntryBCI; |
|
712 |
} |
|
713 |
||
714 |
/** FIXME: figure out where to stick this */ |
|
715 |
public int getInvalidOSREntryBCI() { |
|
716 |
return invalidOSREntryBCI; |
|
717 |
} |
|
718 |
||
719 |
// FIXME: figure out where to stick this |
|
720 |
public boolean wizardMode() { |
|
721 |
return true; |
|
722 |
} |
|
723 |
||
724 |
public ReversePtrs getRevPtrs() { |
|
725 |
return revPtrs; |
|
726 |
} |
|
727 |
||
728 |
public void setRevPtrs(ReversePtrs rp) { |
|
729 |
revPtrs = rp; |
|
730 |
} |
|
731 |
||
732 |
// returns null, if not available. |
|
733 |
public String getVMRelease() { |
|
734 |
return vmRelease; |
|
735 |
} |
|
736 |
||
737 |
// returns null, if not available. |
|
738 |
public String getVMInternalInfo() { |
|
739 |
return vmInternalInfo; |
|
740 |
} |
|
741 |
||
742 |
public boolean isSharingEnabled() { |
|
743 |
if (sharingEnabled == null) { |
|
744 |
Flag flag = getCommandLineFlag("UseSharedSpaces"); |
|
745 |
sharingEnabled = (flag == null)? Boolean.FALSE : |
|
746 |
(flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
|
747 |
} |
|
748 |
return sharingEnabled.booleanValue(); |
|
749 |
} |
|
750 |
||
360
21d113ecbf6a
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diff
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|
751 |
public boolean isCompressedOopsEnabled() { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
1
diff
changeset
|
752 |
if (compressedOopsEnabled == null) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
753 |
Flag flag = getCommandLineFlag("UseCompressedOops"); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
754 |
compressedOopsEnabled = (flag == null) ? Boolean.FALSE: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
755 |
(flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
756 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
757 |
return compressedOopsEnabled.booleanValue(); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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1
diff
changeset
|
758 |
} |
1 | 759 |
|
5694
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
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3261
diff
changeset
|
760 |
public int getObjectAlignmentInBytes() { |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
3261
diff
changeset
|
761 |
if (objectAlignmentInBytes == 0) { |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
3261
diff
changeset
|
762 |
Flag flag = getCommandLineFlag("ObjectAlignmentInBytes"); |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
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3261
diff
changeset
|
763 |
objectAlignmentInBytes = (flag == null) ? 8 : (int)flag.getIntx(); |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
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3261
diff
changeset
|
764 |
} |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
3261
diff
changeset
|
765 |
return objectAlignmentInBytes; |
1e0532a6abff
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
3261
diff
changeset
|
766 |
} |
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6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
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3261
diff
changeset
|
767 |
|
1 | 768 |
// returns null, if not available. |
769 |
public Flag[] getCommandLineFlags() { |
|
770 |
if (commandLineFlags == null) { |
|
771 |
readCommandLineFlags(); |
|
772 |
} |
|
773 |
||
774 |
return commandLineFlags; |
|
775 |
} |
|
776 |
||
777 |
public Flag getCommandLineFlag(String name) { |
|
778 |
if (flagsMap == null) { |
|
779 |
flagsMap = new HashMap(); |
|
780 |
Flag[] flags = getCommandLineFlags(); |
|
781 |
for (int i = 0; i < flags.length; i++) { |
|
782 |
flagsMap.put(flags[i].getName(), flags[i]); |
|
783 |
} |
|
784 |
} |
|
785 |
return (Flag) flagsMap.get(name); |
|
786 |
} |
|
787 |
||
788 |
private void readCommandLineFlags() { |
|
789 |
// get command line flags |
|
790 |
TypeDataBase db = getTypeDataBase(); |
|
791 |
try { |
|
792 |
Type flagType = db.lookupType("Flag"); |
|
793 |
int numFlags = (int) flagType.getCIntegerField("numFlags").getValue(); |
|
794 |
// NOTE: last flag contains null values. |
|
795 |
commandLineFlags = new Flag[numFlags - 1]; |
|
796 |
||
797 |
Address flagAddr = flagType.getAddressField("flags").getValue(); |
|
798 |
||
799 |
AddressField typeFld = flagType.getAddressField("type"); |
|
800 |
AddressField nameFld = flagType.getAddressField("name"); |
|
801 |
AddressField addrFld = flagType.getAddressField("addr"); |
|
802 |
AddressField kindFld = flagType.getAddressField("kind"); |
|
803 |
||
804 |
long flagSize = flagType.getSize(); // sizeof(Flag) |
|
805 |
||
806 |
// NOTE: last flag contains null values. |
|
807 |
for (int f = 0; f < numFlags - 1; f++) { |
|
808 |
String type = CStringUtilities.getString(typeFld.getValue(flagAddr)); |
|
809 |
String name = CStringUtilities.getString(nameFld.getValue(flagAddr)); |
|
810 |
Address addr = addrFld.getValue(flagAddr); |
|
811 |
String kind = CStringUtilities.getString(kindFld.getValue(flagAddr)); |
|
812 |
commandLineFlags[f] = new Flag(type, name, addr, kind); |
|
813 |
flagAddr = flagAddr.addOffsetTo(flagSize); |
|
814 |
} |
|
815 |
||
816 |
// sort flags by name |
|
817 |
Arrays.sort(commandLineFlags, new Comparator() { |
|
818 |
public int compare(Object o1, Object o2) { |
|
819 |
Flag f1 = (Flag) o1; |
|
820 |
Flag f2 = (Flag) o2; |
|
821 |
return f1.getName().compareTo(f2.getName()); |
|
822 |
} |
|
823 |
}); |
|
824 |
} catch (Exception exp) { |
|
825 |
// ignore. may be older version. command line flags not available. |
|
826 |
} |
|
827 |
} |
|
828 |
||
829 |
public String getSystemProperty(String key) { |
|
830 |
Properties props = getSystemProperties(); |
|
831 |
return (props != null)? props.getProperty(key) : null; |
|
832 |
} |
|
833 |
||
834 |
public Properties getSystemProperties() { |
|
835 |
if (sysProps == null) { |
|
836 |
readSystemProperties(); |
|
837 |
} |
|
838 |
return sysProps; |
|
839 |
} |
|
840 |
||
841 |
private void readSystemProperties() { |
|
8878
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
842 |
final InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
843 |
systemKls.iterateStaticFields(new DefaultOopVisitor() { |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
844 |
ObjectReader objReader = new ObjectReader(); |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
845 |
public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
846 |
if (field.getID().getName().equals("props")) { |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
847 |
try { |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
848 |
sysProps = (Properties) objReader.readObject(field.getValue(getObj())); |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
849 |
} catch (Exception e) { |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
850 |
e.printStackTrace(); |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
851 |
} |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
852 |
} |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
853 |
} |
a6283814032c
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
8725
diff
changeset
|
854 |
}); |
1 | 855 |
} |
856 |
} |