author | xdono |
Tue, 28 Jul 2009 12:12:40 -0700 | |
changeset 3261 | c7d5aae8d3f7 |
parent 2739 | 767d5ea27cc5 |
child 5694 | 1e0532a6abff |
child 5547 | f4b087cbb361 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 2000-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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package sun.jvm.hotspot.runtime; |
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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 |
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must be initialized with a call to initialize() before calling |
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getVM(). </P> |
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<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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<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 |
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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> |
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*/ |
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public class VM { |
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private static VM soleInstance; |
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private static List vmInitializedObservers = new ArrayList(); |
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private List vmResumedObservers = new ArrayList(); |
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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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private long stackBias; |
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private long logAddressSize; |
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private Universe universe; |
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private ObjectHeap heap; |
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private SymbolTable symbols; |
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private StringTable strings; |
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private SystemDictionary dict; |
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private Threads threads; |
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private ObjectSynchronizer synchronizer; |
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private JNIHandles handles; |
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private Interpreter interpreter; |
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private StubRoutines stubRoutines; |
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private Bytes bytes; |
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/** Flags indicating whether we are attached to a core, C1, or C2 build */ |
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private boolean usingClientCompiler; |
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private boolean usingServerCompiler; |
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/** Flag indicating whether UseTLAB is turned on */ |
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private boolean useTLAB; |
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/** alignment constants */ |
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private boolean isLP64; |
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private int bytesPerLong; |
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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 */ |
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private CodeCache codeCache; |
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/** This is only present in a C1 build */ |
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private Runtime1 runtime1; |
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/** These constants come from globalDefinitions.hpp */ |
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private int invocationEntryBCI; |
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private int invalidOSREntryBCI; |
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private ReversePtrs revPtrs; |
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private VMRegImpl vmregImpl; |
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// System.getProperties from debuggee VM |
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private Properties sysProps; |
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// VM version strings come from Abstract_VM_Version class |
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private String vmRelease; |
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private String vmInternalInfo; |
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private Flag[] commandLineFlags; |
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private Map flagsMap; |
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private static Type intxType; |
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private static Type uintxType; |
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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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public static final class Flag { |
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private String type; |
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private String name; |
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private Address addr; |
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private String kind; |
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private Flag(String type, String name, Address addr, String kind) { |
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this.type = type; |
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this.name = name; |
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this.addr = addr; |
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this.kind = kind; |
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} |
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public String getType() { |
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return type; |
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} |
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public String getName() { |
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return name; |
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} |
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public Address getAddress() { |
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return addr; |
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} |
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public String getKind() { |
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return kind; |
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} |
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public boolean isBool() { |
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return type.equals("bool"); |
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} |
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public boolean getBool() { |
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if (Assert.ASSERTS_ENABLED) { |
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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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public long getIntx() { |
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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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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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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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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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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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// Note that we don't construct universe, heap, threads, |
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// 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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if (db.getAddressSize() == 4) { |
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logAddressSize = 2; |
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} else if (db.getAddressSize() == 8) { |
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logAddressSize = 3; |
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} else { |
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throw new RuntimeException("Address size " + db.getAddressSize() + " not yet supported"); |
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} |
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// read VM version info |
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try { |
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Type vmVersion = db.lookupType("Abstract_VM_Version"); |
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Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); |
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vmRelease = CStringUtilities.getString(releaseAddr); |
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Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); |
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vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); |
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} catch (Exception exp) { |
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throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); |
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} |
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checkVMVersion(vmRelease); |
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stackBias = db.lookupIntConstant("STACK_BIAS").intValue(); |
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invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue(); |
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invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue(); |
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// We infer the presence of C1 or C2 from a couple of fields we |
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// already have present in the type database |
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{ |
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Type type = db.lookupType("methodOopDesc"); |
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if (type.getField("_from_compiled_entry", false, false) == null) { |
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// Neither C1 nor C2 is present |
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usingClientCompiler = false; |
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usingServerCompiler = false; |
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} else { |
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// Determine whether C2 is present |
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if (type.getField("_interpreter_invocation_count", false, false) != null) { |
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usingServerCompiler = true; |
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} else { |
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usingClientCompiler = true; |
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} |
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} |
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} |
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useTLAB = (db.lookupIntConstant("UseTLAB").intValue() != 0); |
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if (debugger != null) { |
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isLP64 = debugger.getMachineDescription().isLP64(); |
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} |
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bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); |
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minObjAlignmentInBytes = db.lookupIntConstant("MinObjAlignmentInBytes").intValue(); |
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// minObjAlignment = db.lookupIntConstant("MinObjAlignment").intValue(); |
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logMinObjAlignmentInBytes = db.lookupIntConstant("LogMinObjAlignmentInBytes").intValue(); |
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heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
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oopSize = db.lookupIntConstant("oopSize").intValue(); |
1 | 321 |
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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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if (isCompressedOopsEnabled()) { |
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// Size info for oops within java objects is fixed |
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heapOopSize = (int)getIntSize(); |
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} else { |
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heapOopSize = (int)getOopSize(); |
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} |
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1 | 332 |
} |
333 |
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334 |
/** This could be used by a reflective runtime system */ |
|
335 |
public static void initialize(TypeDataBase db, boolean isBigEndian) { |
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336 |
if (soleInstance != null) { |
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337 |
throw new RuntimeException("Attempt to initialize VM twice"); |
|
338 |
} |
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soleInstance = new VM(db, null, isBigEndian); |
|
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for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
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((Observer) iter.next()).update(null, null); |
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342 |
} |
|
343 |
} |
|
344 |
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345 |
/** This is used by the debugging system */ |
|
346 |
public static void initialize(TypeDataBase db, JVMDebugger debugger) { |
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347 |
if (soleInstance != null) { |
|
348 |
throw new RuntimeException("Attempt to initialize VM twice"); |
|
349 |
} |
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350 |
soleInstance = new VM(db, debugger, debugger.getMachineDescription().isBigEndian()); |
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1 | 352 |
for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
353 |
((Observer) iter.next()).update(null, null); |
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354 |
} |
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2262 | 355 |
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2739 | 356 |
debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(), |
357 |
Universe.getNarrowOopShift()); |
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1 | 358 |
} |
359 |
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360 |
/** This is used by the debugging system */ |
|
361 |
public static void shutdown() { |
|
362 |
soleInstance = null; |
|
363 |
} |
|
364 |
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365 |
/** This is used by both the debugger and any runtime system. It is |
|
366 |
the basic mechanism by which classes which mimic underlying VM |
|
367 |
functionality cause themselves to be initialized. The given |
|
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observer will be notified (with arguments (null, null)) when the |
|
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VM is re-initialized, as well as when it registers itself with |
|
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the VM. */ |
|
371 |
public static void registerVMInitializedObserver(Observer o) { |
|
372 |
vmInitializedObservers.add(o); |
|
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o.update(null, null); |
|
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} |
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/** This is the primary accessor used by both the debugger and any |
|
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potential runtime system */ |
|
378 |
public static VM getVM() { |
|
379 |
if (soleInstance == null) { |
|
380 |
throw new RuntimeException("VM.initialize() was not yet called"); |
|
381 |
} |
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return soleInstance; |
|
383 |
} |
|
384 |
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385 |
/** This is only used by the debugging system. The given observer |
|
386 |
will be notified if the underlying VM resumes execution. NOTE |
|
387 |
that the given observer is not triggered if the VM is currently |
|
388 |
running and therefore differs in behavior from {@link |
|
389 |
#registerVMInitializedObserver} (because of the possibility of |
|
390 |
race conditions if the observer is added while the VM is being |
|
391 |
suspended or resumed). */ |
|
392 |
public void registerVMResumedObserver(Observer o) { |
|
393 |
vmResumedObservers.add(o); |
|
394 |
} |
|
395 |
||
396 |
/** This is only used by the debugging system. The given observer |
|
397 |
will be notified if the underlying VM suspends execution. NOTE |
|
398 |
that the given observer is not triggered if the VM is currently |
|
399 |
suspended and therefore differs in behavior from {@link |
|
400 |
#registerVMInitializedObserver} (because of the possibility of |
|
401 |
race conditions if the observer is added while the VM is being |
|
402 |
suspended or resumed). */ |
|
403 |
public void registerVMSuspendedObserver(Observer o) { |
|
404 |
vmSuspendedObservers.add(o); |
|
405 |
} |
|
406 |
||
407 |
/** This is only used by the debugging system. Informs all |
|
408 |
registered resumption observers that the VM has been resumed. |
|
409 |
The application is responsible for actually having performed the |
|
410 |
resumption. No OopHandles must be used after this point, as they |
|
411 |
may move in the target address space due to garbage |
|
412 |
collection. */ |
|
413 |
public void fireVMResumed() { |
|
414 |
for (Iterator iter = vmResumedObservers.iterator(); iter.hasNext(); ) { |
|
415 |
((Observer) iter.next()).update(null, null); |
|
416 |
} |
|
417 |
} |
|
418 |
||
419 |
/** This is only used by the debugging system. Informs all |
|
420 |
registered suspension observers that the VM has been suspended. |
|
421 |
The application is responsible for actually having performed the |
|
422 |
suspension. Garbage collection must be forbidden at this point; |
|
423 |
for example, a JPDA-level suspension is not adequate since the |
|
424 |
VM thread may still be running. */ |
|
425 |
public void fireVMSuspended() { |
|
426 |
for (Iterator iter = vmSuspendedObservers.iterator(); iter.hasNext(); ) { |
|
427 |
((Observer) iter.next()).update(null, null); |
|
428 |
} |
|
429 |
} |
|
430 |
||
431 |
/** Returns the OS this VM is running on. Notice that by delegating |
|
432 |
to the debugger we can transparently support remote |
|
433 |
debugging. */ |
|
434 |
public String getOS() { |
|
435 |
if (debugger != null) { |
|
436 |
return debugger.getOS(); |
|
437 |
} |
|
438 |
return PlatformInfo.getOS(); |
|
439 |
} |
|
440 |
||
441 |
/** Returns the CPU this VM is running on. Notice that by delegating |
|
442 |
to the debugger we can transparently support remote |
|
443 |
debugging. */ |
|
444 |
public String getCPU() { |
|
445 |
if (debugger != null) { |
|
446 |
return debugger.getCPU(); |
|
447 |
} |
|
448 |
return PlatformInfo.getCPU(); |
|
449 |
} |
|
450 |
||
451 |
public Type lookupType(String cTypeName) { |
|
452 |
return db.lookupType(cTypeName); |
|
453 |
} |
|
454 |
||
455 |
public Integer lookupIntConstant(String name) { |
|
456 |
return db.lookupIntConstant(name); |
|
457 |
} |
|
458 |
||
459 |
public long getAddressSize() { |
|
460 |
return db.getAddressSize(); |
|
461 |
} |
|
462 |
||
463 |
public long getOopSize() { |
|
360
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|
464 |
return oopSize; |
1 | 465 |
} |
466 |
||
467 |
public long getLogAddressSize() { |
|
468 |
return logAddressSize; |
|
469 |
} |
|
470 |
||
360
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|
471 |
public long getIntSize() { |
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|
472 |
return db.getJIntType().getSize(); |
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|
473 |
} |
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|
474 |
|
1 | 475 |
/** NOTE: this offset is in BYTES in this system! */ |
476 |
public long getStackBias() { |
|
477 |
return stackBias; |
|
478 |
} |
|
479 |
||
480 |
/** Indicates whether the underlying machine supports the LP64 data |
|
481 |
model. This is needed for conditionalizing code in a few places */ |
|
482 |
public boolean isLP64() { |
|
483 |
if (Assert.ASSERTS_ENABLED) { |
|
484 |
Assert.that(isDebugging(), "Debugging system only for now"); |
|
485 |
} |
|
486 |
return isLP64; |
|
487 |
} |
|
488 |
||
489 |
/** Get bytes-per-long == long/double natural alignment. */ |
|
490 |
public int getBytesPerLong() { |
|
491 |
return bytesPerLong; |
|
492 |
} |
|
493 |
||
494 |
/** Get minimum object alignment in bytes. */ |
|
360
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|
495 |
public int getMinObjAlignment() { |
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|
496 |
return minObjAlignmentInBytes; |
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|
497 |
} |
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|
498 |
|
1 | 499 |
public int getMinObjAlignmentInBytes() { |
500 |
return minObjAlignmentInBytes; |
|
501 |
} |
|
360
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|
502 |
public int getLogMinObjAlignmentInBytes() { |
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|
503 |
return logMinObjAlignmentInBytes; |
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|
504 |
} |
1 | 505 |
|
360
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|
506 |
public int getHeapWordSize() { |
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|
507 |
return heapWordSize; |
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|
508 |
} |
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|
509 |
|
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|
510 |
public int getHeapOopSize() { |
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|
511 |
return heapOopSize; |
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|
512 |
} |
1 | 513 |
/** Utility routine for getting data structure alignment correct */ |
514 |
public long alignUp(long size, long alignment) { |
|
515 |
return (size + alignment - 1) & ~(alignment - 1); |
|
516 |
} |
|
517 |
||
518 |
/** Utility routine for getting data structure alignment correct */ |
|
519 |
public long alignDown(long size, long alignment) { |
|
520 |
return size & ~(alignment - 1); |
|
521 |
} |
|
522 |
||
523 |
/** Utility routine for building an int from two "unsigned" 16-bit |
|
524 |
shorts */ |
|
525 |
public int buildIntFromShorts(short low, short high) { |
|
526 |
return (((int) high) << 16) | (((int) low) & 0xFFFF); |
|
527 |
} |
|
528 |
||
529 |
/** Utility routine for building a long from two "unsigned" 32-bit |
|
530 |
ints in <b>platform-dependent</b> order */ |
|
531 |
public long buildLongFromIntsPD(int oneHalf, int otherHalf) { |
|
532 |
if (isBigEndian) { |
|
533 |
return (((long) otherHalf) << 32) | (((long) oneHalf) & 0x00000000FFFFFFFFL); |
|
534 |
} else{ |
|
535 |
return (((long) oneHalf) << 32) | (((long) otherHalf) & 0x00000000FFFFFFFFL); |
|
536 |
} |
|
537 |
} |
|
538 |
||
539 |
/** Indicates whether Thread-Local Allocation Buffers are used */ |
|
540 |
public boolean getUseTLAB() { |
|
541 |
return useTLAB; |
|
542 |
} |
|
543 |
||
544 |
public TypeDataBase getTypeDataBase() { |
|
545 |
return db; |
|
546 |
} |
|
547 |
||
548 |
public Universe getUniverse() { |
|
549 |
if (universe == null) { |
|
550 |
universe = new Universe(); |
|
551 |
} |
|
552 |
return universe; |
|
553 |
} |
|
554 |
||
555 |
public ObjectHeap getObjectHeap() { |
|
556 |
if (heap == null) { |
|
557 |
heap = new ObjectHeap(db); |
|
558 |
} |
|
559 |
return heap; |
|
560 |
} |
|
561 |
||
562 |
public SymbolTable getSymbolTable() { |
|
563 |
if (symbols == null) { |
|
564 |
symbols = SymbolTable.getTheTable(); |
|
565 |
} |
|
566 |
return symbols; |
|
567 |
} |
|
568 |
||
569 |
public StringTable getStringTable() { |
|
570 |
if (strings == null) { |
|
571 |
strings = StringTable.getTheTable(); |
|
572 |
} |
|
573 |
return strings; |
|
574 |
} |
|
575 |
||
576 |
public SystemDictionary getSystemDictionary() { |
|
577 |
if (dict == null) { |
|
578 |
dict = new SystemDictionary(); |
|
579 |
} |
|
580 |
return dict; |
|
581 |
} |
|
582 |
||
583 |
public Threads getThreads() { |
|
584 |
if (threads == null) { |
|
585 |
threads = new Threads(); |
|
586 |
} |
|
587 |
return threads; |
|
588 |
} |
|
589 |
||
590 |
public ObjectSynchronizer getObjectSynchronizer() { |
|
591 |
if (synchronizer == null) { |
|
592 |
synchronizer = new ObjectSynchronizer(); |
|
593 |
} |
|
594 |
return synchronizer; |
|
595 |
} |
|
596 |
||
597 |
public JNIHandles getJNIHandles() { |
|
598 |
if (handles == null) { |
|
599 |
handles = new JNIHandles(); |
|
600 |
} |
|
601 |
return handles; |
|
602 |
} |
|
603 |
||
604 |
public Interpreter getInterpreter() { |
|
605 |
if (interpreter == null) { |
|
606 |
interpreter = new Interpreter(); |
|
607 |
} |
|
608 |
return interpreter; |
|
609 |
} |
|
610 |
||
611 |
public StubRoutines getStubRoutines() { |
|
612 |
if (stubRoutines == null) { |
|
613 |
stubRoutines = new StubRoutines(); |
|
614 |
} |
|
615 |
return stubRoutines; |
|
616 |
} |
|
617 |
||
618 |
public VMRegImpl getVMRegImplInfo() { |
|
619 |
if (vmregImpl == null) { |
|
620 |
vmregImpl = new VMRegImpl(); |
|
621 |
} |
|
622 |
return vmregImpl; |
|
623 |
} |
|
624 |
||
625 |
public Bytes getBytes() { |
|
626 |
if (bytes == null) { |
|
627 |
bytes = new Bytes(debugger.getMachineDescription()); |
|
628 |
} |
|
629 |
return bytes; |
|
630 |
} |
|
631 |
||
1135
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|
632 |
/** Returns true if this is a isBigEndian, false otherwise */ |
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670
diff
changeset
|
633 |
public boolean isBigEndian() { |
9487203e5789
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670
diff
changeset
|
634 |
return isBigEndian; |
9487203e5789
6706829: Compressed Oops: add debug info for narrow oops
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diff
changeset
|
635 |
} |
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diff
changeset
|
636 |
|
1 | 637 |
/** Returns true if this is a "core" build, false if either C1 or C2 |
638 |
is present */ |
|
639 |
public boolean isCore() { |
|
640 |
return (!(usingClientCompiler || usingServerCompiler)); |
|
641 |
} |
|
642 |
||
643 |
/** Returns true if this is a C1 build, false otherwise */ |
|
644 |
public boolean isClientCompiler() { |
|
645 |
return usingClientCompiler; |
|
646 |
} |
|
647 |
||
648 |
/** Returns true if this is a C2 build, false otherwise */ |
|
649 |
public boolean isServerCompiler() { |
|
650 |
return usingServerCompiler; |
|
651 |
} |
|
652 |
||
653 |
/** Returns true if C2 derived pointer table should be used, false otherwise */ |
|
654 |
public boolean useDerivedPointerTable() { |
|
655 |
return !disableDerivedPrinterTableCheck; |
|
656 |
} |
|
657 |
||
658 |
/** Returns the code cache; should not be used if is core build */ |
|
659 |
public CodeCache getCodeCache() { |
|
660 |
if (Assert.ASSERTS_ENABLED) { |
|
661 |
Assert.that(!isCore(), "noncore builds only"); |
|
662 |
} |
|
663 |
if (codeCache == null) { |
|
664 |
codeCache = new CodeCache(); |
|
665 |
} |
|
666 |
return codeCache; |
|
667 |
} |
|
668 |
||
669 |
/** Should only be called for C1 builds */ |
|
670 |
public Runtime1 getRuntime1() { |
|
671 |
if (Assert.ASSERTS_ENABLED) { |
|
672 |
Assert.that(isClientCompiler(), "C1 builds only"); |
|
673 |
} |
|
674 |
if (runtime1 == null) { |
|
675 |
runtime1 = new Runtime1(); |
|
676 |
} |
|
677 |
return runtime1; |
|
678 |
} |
|
679 |
||
680 |
/** Test to see whether we're in debugging mode (NOTE: this really |
|
681 |
should not be tested by this code; currently only used in |
|
682 |
StackFrameStream) */ |
|
683 |
public boolean isDebugging() { |
|
684 |
return (debugger != null); |
|
685 |
} |
|
686 |
||
687 |
/** This is only used by the debugging (i.e., non-runtime) system */ |
|
688 |
public JVMDebugger getDebugger() { |
|
689 |
if (debugger == null) { |
|
690 |
throw new RuntimeException("Attempt to use debugger in runtime system"); |
|
691 |
} |
|
692 |
return debugger; |
|
693 |
} |
|
694 |
||
695 |
/** Indicates whether a given program counter is in Java code. This |
|
696 |
includes but is not spanned by the interpreter and code cache. |
|
697 |
Only used in the debugging system, for implementing |
|
698 |
JavaThread.currentFrameGuess() on x86. */ |
|
699 |
public boolean isJavaPCDbg(Address addr) { |
|
700 |
// FIXME: this is not a complete enough set: must include areas |
|
701 |
// like vtable stubs |
|
702 |
return (getInterpreter().contains(addr) || |
|
703 |
getCodeCache().contains(addr)); |
|
704 |
} |
|
705 |
||
706 |
/** FIXME: figure out where to stick this */ |
|
707 |
public int getInvocationEntryBCI() { |
|
708 |
return invocationEntryBCI; |
|
709 |
} |
|
710 |
||
711 |
/** FIXME: figure out where to stick this */ |
|
712 |
public int getInvalidOSREntryBCI() { |
|
713 |
return invalidOSREntryBCI; |
|
714 |
} |
|
715 |
||
716 |
// FIXME: figure out where to stick this |
|
717 |
public boolean wizardMode() { |
|
718 |
return true; |
|
719 |
} |
|
720 |
||
721 |
public ReversePtrs getRevPtrs() { |
|
722 |
return revPtrs; |
|
723 |
} |
|
724 |
||
725 |
public void setRevPtrs(ReversePtrs rp) { |
|
726 |
revPtrs = rp; |
|
727 |
} |
|
728 |
||
729 |
// returns null, if not available. |
|
730 |
public String getVMRelease() { |
|
731 |
return vmRelease; |
|
732 |
} |
|
733 |
||
734 |
// returns null, if not available. |
|
735 |
public String getVMInternalInfo() { |
|
736 |
return vmInternalInfo; |
|
737 |
} |
|
738 |
||
739 |
public boolean isSharingEnabled() { |
|
740 |
if (sharingEnabled == null) { |
|
741 |
Flag flag = getCommandLineFlag("UseSharedSpaces"); |
|
742 |
sharingEnabled = (flag == null)? Boolean.FALSE : |
|
743 |
(flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
|
744 |
} |
|
745 |
return sharingEnabled.booleanValue(); |
|
746 |
} |
|
747 |
||
360
21d113ecbf6a
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diff
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|
748 |
public boolean isCompressedOopsEnabled() { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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1
diff
changeset
|
749 |
if (compressedOopsEnabled == null) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
750 |
Flag flag = getCommandLineFlag("UseCompressedOops"); |
21d113ecbf6a
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coleenp
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1
diff
changeset
|
751 |
compressedOopsEnabled = (flag == null) ? Boolean.FALSE: |
21d113ecbf6a
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1
diff
changeset
|
752 |
(flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
changeset
|
753 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
changeset
|
754 |
return compressedOopsEnabled.booleanValue(); |
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diff
changeset
|
755 |
} |
1 | 756 |
|
757 |
// returns null, if not available. |
|
758 |
public Flag[] getCommandLineFlags() { |
|
759 |
if (commandLineFlags == null) { |
|
760 |
readCommandLineFlags(); |
|
761 |
} |
|
762 |
||
763 |
return commandLineFlags; |
|
764 |
} |
|
765 |
||
766 |
public Flag getCommandLineFlag(String name) { |
|
767 |
if (flagsMap == null) { |
|
768 |
flagsMap = new HashMap(); |
|
769 |
Flag[] flags = getCommandLineFlags(); |
|
770 |
for (int i = 0; i < flags.length; i++) { |
|
771 |
flagsMap.put(flags[i].getName(), flags[i]); |
|
772 |
} |
|
773 |
} |
|
774 |
return (Flag) flagsMap.get(name); |
|
775 |
} |
|
776 |
||
777 |
private void readCommandLineFlags() { |
|
778 |
// get command line flags |
|
779 |
TypeDataBase db = getTypeDataBase(); |
|
780 |
try { |
|
781 |
Type flagType = db.lookupType("Flag"); |
|
782 |
int numFlags = (int) flagType.getCIntegerField("numFlags").getValue(); |
|
783 |
// NOTE: last flag contains null values. |
|
784 |
commandLineFlags = new Flag[numFlags - 1]; |
|
785 |
||
786 |
Address flagAddr = flagType.getAddressField("flags").getValue(); |
|
787 |
||
788 |
AddressField typeFld = flagType.getAddressField("type"); |
|
789 |
AddressField nameFld = flagType.getAddressField("name"); |
|
790 |
AddressField addrFld = flagType.getAddressField("addr"); |
|
791 |
AddressField kindFld = flagType.getAddressField("kind"); |
|
792 |
||
793 |
long flagSize = flagType.getSize(); // sizeof(Flag) |
|
794 |
||
795 |
// NOTE: last flag contains null values. |
|
796 |
for (int f = 0; f < numFlags - 1; f++) { |
|
797 |
String type = CStringUtilities.getString(typeFld.getValue(flagAddr)); |
|
798 |
String name = CStringUtilities.getString(nameFld.getValue(flagAddr)); |
|
799 |
Address addr = addrFld.getValue(flagAddr); |
|
800 |
String kind = CStringUtilities.getString(kindFld.getValue(flagAddr)); |
|
801 |
commandLineFlags[f] = new Flag(type, name, addr, kind); |
|
802 |
flagAddr = flagAddr.addOffsetTo(flagSize); |
|
803 |
} |
|
804 |
||
805 |
// sort flags by name |
|
806 |
Arrays.sort(commandLineFlags, new Comparator() { |
|
807 |
public int compare(Object o1, Object o2) { |
|
808 |
Flag f1 = (Flag) o1; |
|
809 |
Flag f2 = (Flag) o2; |
|
810 |
return f1.getName().compareTo(f2.getName()); |
|
811 |
} |
|
812 |
}); |
|
813 |
} catch (Exception exp) { |
|
814 |
// ignore. may be older version. command line flags not available. |
|
815 |
} |
|
816 |
} |
|
817 |
||
818 |
public String getSystemProperty(String key) { |
|
819 |
Properties props = getSystemProperties(); |
|
820 |
return (props != null)? props.getProperty(key) : null; |
|
821 |
} |
|
822 |
||
823 |
public Properties getSystemProperties() { |
|
824 |
if (sysProps == null) { |
|
825 |
readSystemProperties(); |
|
826 |
} |
|
827 |
return sysProps; |
|
828 |
} |
|
829 |
||
830 |
private void readSystemProperties() { |
|
831 |
InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); |
|
832 |
systemKls.iterate(new DefaultOopVisitor() { |
|
833 |
ObjectReader objReader = new ObjectReader(); |
|
834 |
public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { |
|
835 |
if (field.getID().getName().equals("props")) { |
|
836 |
try { |
|
837 |
sysProps = (Properties) objReader.readObject(field.getValue(getObj())); |
|
838 |
} catch (Exception e) { |
|
839 |
if (Assert.ASSERTS_ENABLED) { |
|
840 |
e.printStackTrace(); |
|
841 |
} |
|
842 |
} |
|
843 |
} |
|
844 |
} |
|
845 |
}, false); |
|
846 |
} |
|
847 |
} |