Mercurial > hg > graal-compiler
diff agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
---|---|
date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | a9fed06c01d2 |
children | 5a98bf7d847b |
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--- a/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java Fri Aug 31 16:39:35 2012 -0700 +++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java Sat Sep 01 13:25:18 2012 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -97,6 +97,7 @@ /** alignment constants */ private boolean isLP64; private int bytesPerLong; + private int bytesPerWord; private int objectAlignmentInBytes; private int minObjAlignmentInBytes; private int logMinObjAlignmentInBytes; @@ -128,6 +129,7 @@ private static CIntegerType boolType; private Boolean sharingEnabled; private Boolean compressedOopsEnabled; + private Boolean compressedHeadersEnabled; // command line flags supplied to VM - see struct Flag in globals.hpp public static final class Flag { @@ -303,7 +305,7 @@ // We infer the presence of C1 or C2 from a couple of fields we // already have present in the type database { - Type type = db.lookupType("methodOopDesc"); + Type type = db.lookupType("Method"); if (type.getField("_from_compiled_entry", false, false) == null) { // Neither C1 nor C2 is present usingClientCompiler = false; @@ -325,6 +327,7 @@ isLP64 = debugger.getMachineDescription().isLP64(); } bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); + bytesPerWord = db.lookupIntConstant("BytesPerWord").intValue(); heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); oopSize = db.lookupIntConstant("oopSize").intValue(); @@ -509,6 +512,10 @@ return bytesPerLong; } + public int getBytesPerWord() { + return bytesPerWord; + } + /** Get minimum object alignment in bytes. */ public int getMinObjAlignmentInBytes() { return minObjAlignmentInBytes; @@ -772,6 +779,15 @@ return compressedOopsEnabled.booleanValue(); } + public boolean isCompressedHeadersEnabled() { + if (compressedHeadersEnabled == null) { + Flag flag = getCommandLineFlag("UseCompressedHeaders"); + compressedHeadersEnabled = (flag == null) ? Boolean.FALSE: + (flag.getBool()? Boolean.TRUE: Boolean.FALSE); + } + return compressedHeadersEnabled.booleanValue(); + } + public int getObjectAlignmentInBytes() { if (objectAlignmentInBytes == 0) { Flag flag = getCommandLineFlag("ObjectAlignmentInBytes");