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src/share/vm/prims/jvmtiGen.java@4c84d351cca9 (annotated)

src/share/vm/prims/jvmtiGen.java

Fri, 16 Aug 2013 13:22:32 +0200

author

stefank

date

Fri, 16 Aug 2013 13:22:32 +0200

changeset 5578

4c84d351cca9

parent 5237

f2110083203d

child 6876

710a3c8b516e

permissions

-rw-r--r--

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

duke@435	1	/*
sla@5237	2	* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	import javax.xml.parsers.DocumentBuilder;
duke@435	26	import javax.xml.parsers.DocumentBuilderFactory;
duke@435	27	import javax.xml.parsers.FactoryConfigurationError;
duke@435	28	import javax.xml.parsers.ParserConfigurationException;
duke@435	29
duke@435	30	import org.xml.sax.SAXException;
duke@435	31	import org.xml.sax.SAXParseException;
duke@435	32	import org.w3c.dom.Document;
duke@435	33	import org.w3c.dom.DOMException;
duke@435	34	// For write operation
duke@435	35	import javax.xml.transform.Transformer;
duke@435	36	import javax.xml.transform.TransformerException;
duke@435	37	import javax.xml.transform.TransformerFactory;
duke@435	38	import javax.xml.transform.TransformerConfigurationException;
duke@435	39	import javax.xml.transform.dom.DOMSource;
duke@435	40	import javax.xml.transform.stream.StreamSource;
duke@435	41	import javax.xml.transform.stream.StreamResult;
duke@435	42
duke@435	43	import java.io.*;
duke@435	44
duke@435	45	public class jvmtiGen
duke@435	46	{
duke@435	47	/**
duke@435	48	* Write out usage and exit.
duke@435	49	*/
duke@435	50	private static void showUsage() {
duke@435	51	System.err.println("usage:");
duke@435	52	System.err.println(" java jvmtiGen " +
duke@435	53	"-IN <input XML file name> " +
duke@435	54	"-XSL <XSL file> " +
duke@435	55	"-OUT <output file name> " +
duke@435	56	"[-PARAM <name> <expression> ...]");
duke@435	57	System.exit(0); // There is no returning from showUsage()
duke@435	58	}
duke@435	59
duke@435	60	// Global value so it can be ref'd by the tree-adapter
duke@435	61	static Document document;
duke@435	62
duke@435	63	public static void main (String argv [])
duke@435	64	{
duke@435	65	String inFileName=null;
duke@435	66	String xslFileName=null;
duke@435	67	String outFileName=null;
duke@435	68	java.util.Vector<String> params=new java.util.Vector<String>();
duke@435	69	for (int ii = 0; ii < argv.length; ii++) {
duke@435	70	if (argv[ii].equals("-IN")) {
duke@435	71	inFileName = argv[++ii];
duke@435	72	} else if (argv[ii].equals("-XSL")) {
duke@435	73	xslFileName = argv[++ii];
duke@435	74	} else if (argv[ii].equals("-OUT")) {
duke@435	75	outFileName = argv[++ii];
duke@435	76	} else if (argv[ii].equals("-PARAM")) {
duke@435	77	if (ii + 2 < argv.length) {
duke@435	78	String name = argv[++ii];
duke@435	79	params.addElement(name);
duke@435	80	String expression = argv[++ii];
duke@435	81	params.addElement(expression);
duke@435	82	} else {
duke@435	83	showUsage();
duke@435	84	}
duke@435	85	} else {
duke@435	86	showUsage();
duke@435	87	}
duke@435	88	}
duke@435	89	if (inFileName==null || xslFileName==null || outFileName==null){
duke@435	90	showUsage();
duke@435	91	}
duke@435	92
duke@435	93	/*
duke@435	94	* Due to JAXP breakage in some intermediate Tiger builds, the
duke@435	95	* com.sun.org.apache..... parser may throw an exception:
duke@435	96	* com.sun.org.apache.xml.internal.utils.WrappedRuntimeException:
duke@435	97	* org.apache.xalan.serialize.SerializerToText
duke@435	98	*
duke@435	99	* To work around the problem, this program uses the
duke@435	100	* org.apache.xalan.... version if it is available. It is
duke@435	101	* available in J2SE 1.4.x and early builds of 1.5 (Tiger).
duke@435	102	* It was removed at the same time the thrown exception issue
duke@435	103	* above was fixed, so if the class is not found we can proceed
duke@435	104	* and use the default parser.
duke@435	105	*/
duke@435	106	final String parserProperty =
duke@435	107	"javax.xml.transform.TransformerFactory";
duke@435	108	final String workaroundParser =
duke@435	109	"org.apache.xalan.processor.TransformerFactoryImpl";
duke@435	110
duke@435	111	try {
duke@435	112	java.lang.Class cls = java.lang.Class.forName(workaroundParser);
duke@435	113	/*
duke@435	114	* If we get here, we found the class. Use it.
duke@435	115	*/
duke@435	116	System.setProperty(parserProperty, workaroundParser);
duke@435	117	System.out.println("Info: jvmtiGen using " + parserProperty +
duke@435	118	" = " + workaroundParser);
duke@435	119	} catch (ClassNotFoundException cnfex) {
duke@435	120	/*
duke@435	121	* We didn't find workaroundParser. Ignore the
duke@435	122	* exception and proceed with default settings.
duke@435	123	*/
duke@435	124	}
duke@435	125
duke@435	126	DocumentBuilderFactory factory =
duke@435	127	DocumentBuilderFactory.newInstance();
duke@435	128
duke@435	129	factory.setNamespaceAware(true);
duke@435	130	factory.setValidating(true);
sla@5237	131	factory.setXIncludeAware(true);
duke@435	132
duke@435	133	try {
duke@435	134	File datafile = new File(inFileName);
duke@435	135	File stylesheet = new File(xslFileName);
duke@435	136
duke@435	137	DocumentBuilder builder = factory.newDocumentBuilder();
duke@435	138	document = builder.parse(datafile);
duke@435	139
duke@435	140	// Use a Transformer for output
duke@435	141	TransformerFactory tFactory =
duke@435	142	TransformerFactory.newInstance();
duke@435	143	StreamSource stylesource = new StreamSource(stylesheet);
duke@435	144	Transformer transformer = tFactory.newTransformer(stylesource);
duke@435	145	for (int ii = 0; ii < params.size(); ii += 2){
duke@435	146	transformer.setParameter((String) params.elementAt(ii),
duke@435	147	(String) params.elementAt(ii + 1));
duke@435	148	}
duke@435	149	DOMSource source = new DOMSource(document);
duke@435	150
duke@435	151	PrintStream ps = new PrintStream( new FileOutputStream(outFileName));
duke@435	152	StreamResult result = new StreamResult(ps);
duke@435	153	transformer.transform(source, result);
duke@435	154
duke@435	155	} catch (TransformerConfigurationException tce) {
duke@435	156	// Error generated by the parser
duke@435	157	System.out.println ("\n** Transformer Factory error");
duke@435	158	System.out.println(" " + tce.getMessage() );
duke@435	159
duke@435	160	// Use the contained exception, if any
duke@435	161	Throwable x = tce;
duke@435	162	if (tce.getException() != null)
duke@435	163	x = tce.getException();
duke@435	164	x.printStackTrace();
duke@435	165
duke@435	166	} catch (TransformerException te) {
duke@435	167	// Error generated by the parser
duke@435	168	System.out.println ("\n** Transformation error");
duke@435	169	System.out.println(" " + te.getMessage() );
duke@435	170
duke@435	171	// Use the contained exception, if any
duke@435	172	Throwable x = te;
duke@435	173	if (te.getException() != null)
duke@435	174	x = te.getException();
duke@435	175	x.printStackTrace();
duke@435	176
duke@435	177	} catch (SAXException sxe) {
duke@435	178	// Error generated by this application
duke@435	179	// (or a parser-initialization error)
duke@435	180	Exception x = sxe;
duke@435	181	if (sxe.getException() != null)
duke@435	182	x = sxe.getException();
duke@435	183	x.printStackTrace();
duke@435	184
duke@435	185	} catch (ParserConfigurationException pce) {
duke@435	186	// Parser with specified options can't be built
duke@435	187	pce.printStackTrace();
duke@435	188
duke@435	189	} catch (IOException ioe) {
duke@435	190	// I/O error
duke@435	191	ioe.printStackTrace();
duke@435	192	}
duke@435	193	} // main
duke@435	194	}