Mercurial > hg > truffle
view test/runtime/NMT/SummarySanityCheck.java @ 10185:d50cc62e94ff
8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t
Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime.
Reviewed-by: twisti, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
---|---|
date | Wed, 24 Apr 2013 14:48:43 -0700 |
parents | 1b0dc9f87e75 |
children | ac12996df59b |
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/* * Copyright (c) 2013, 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 * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @key nmt jcmd * @summary Sanity check the output of NMT * @library /testlibrary /testlibrary/whitebox * @build SummarySanityCheck * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck */ import com.oracle.java.testlibrary.*; import java.util.regex.Matcher; import java.util.regex.Pattern; import sun.hotspot.WhiteBox; public class SummarySanityCheck { private static String jcmdout; public static void main(String args[]) throws Exception { // Grab my own PID String pid = Integer.toString(ProcessTools.getProcessId()); // Use WB API to ensure that all data has been merged before we continue if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) { throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); } ProcessBuilder pb = new ProcessBuilder(); // Run 'jcmd <pid> VM.native_memory summary scale=KB' pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"}); OutputAnalyzer output = new OutputAnalyzer(pb.start()); jcmdout = output.getOutput(); // Split by '-' to get the 'groups' String[] lines = jcmdout.split("\n"); if (lines.length == 0) { throwTestException("Failed to parse jcmd output"); } int totalCommitted = 0, totalReserved = 0; int totalCommittedSum = 0, totalReservedSum = 0; // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB) Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)"); // Match 'Total: reserved=<reserved>KB, committed=<committed>KB' Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB"); for (int i = 0; i < lines.length; i++) { if (lines[i].startsWith("Total")) { Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]); if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) { totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed")); totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved")); } else { throwTestException("Failed to match the expected groups in 'Total' memory part"); } } else if (lines[i].startsWith("-")) { Matcher typeMatcher = mtTypePattern.matcher(lines[i]); if (typeMatcher.matches()) { int typeCommitted = Integer.parseInt(typeMatcher.group("committed")); int typeReserved = Integer.parseInt(typeMatcher.group("reserved")); // Make sure reserved is always less or equals if (typeCommitted > typeReserved) { throwTestException("Committed (" + typeCommitted + ") was more than Reserved (" + typeReserved + ") for mtType: " + typeMatcher.group("typename")); } // Add to total and compare them in the end totalCommittedSum += typeCommitted; totalReservedSum += typeReserved; } else { throwTestException("Failed to match the group on line " + i); } } } // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB int committedDiff = totalCommitted - totalCommittedSum; if (committedDiff > 8 || committedDiff < -8) { throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" ); } int reservedDiff = totalReserved - totalReservedSum; if (reservedDiff > 8 || reservedDiff < -8) { throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" ); } } private static void throwTestException(String reason) throws Exception { throw new Exception(reason + " . Stdout is :\n" + jcmdout); } }