7199488: [TEST] runtime/7158800/InternTest.java failed due to false-positive on PID match.

Reviewed-by: coleenp

test/runtime/7158800/InternTest.java

-/*
- * Copyright (c) 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
- * 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
- * @bug 7158800
- * @run shell/timeout=400 Test7158800.sh
- * @summary This test performs poorly if alternate hashing isn't used for
- * string table.
- * The timeout is handled by the shell file (which kills the process)
- */
-import java.util.*;
-import java.io.*;
-
-public class InternTest {
-    public static void main (String args[]) throws Exception {
-        final String badStringsFilename = "badstrings.txt";
-
-        if (args.length == 0 || (!args[0].equals("bad") && !args[0].equals("normal"))) {
-            System.out.println("Usage:  java InternTest [normal|bad]");
-            System.exit(1);
-        }
-
-        FileInputStream fstream = new FileInputStream(badStringsFilename);
-        DataInputStream in = new DataInputStream(fstream);
-        BufferedReader br = new BufferedReader(new InputStreamReader(in));
-        String toIntern, toDiscard;
-        int count = 0;
-        long current = 0L;
-        long last = System.currentTimeMillis();
-
-        if (args[0].equals("bad")) {
-            while ((toIntern = br.readLine()) != null) {
-                toDiscard = new String((new Integer((int)(Math.random() * Integer.MAX_VALUE))).toString());
-                toIntern.intern();
-                count++;
-                if (count % 10000 == 0 && count != 0) {
-                    current = System.currentTimeMillis();
-                    System.out.println(new Date(current) + ": interned " + count + " 0-hash strings - last 10000 took " + ((float)(current - last))/1000 + "s (" + ((float)(current - last))/10000000 + "s per String)");
-                    last = current;
-                }
-            }
-        }
-        if (args[0].equals("normal")) {
-            while ((toDiscard = br.readLine()) != null) { // do the same read from the file to try and make the test fair
-                toIntern = new String((new Integer((int)(Math.random() * Integer.MAX_VALUE))).toString());
-                toIntern.intern();
-                count++;
-                if (count % 10000 == 0 && count != 0) {
-                    current = System.currentTimeMillis();
-                    System.out.println(new Date(current) + ": interned " + count + " normal strings - last 10000 took " + ((float)(current - last))/1000 + "s (" + ((float)(current - last))/10000000 + "s per String)");
-                    last = current;
-                }
-            }
-        }
-        in.close();
-    }
-}
-
-

test/runtime/7158800/Test7158800.sh

-#!/bin/sh
-# 
-#  Copyright (c) 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
-#  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.
-# 
-#
-#   Run test for InternTest.java
-#
-
-if [ "${TESTSRC}" = "" ]
-then TESTSRC=.
-fi
-
-if [ "${TESTJAVA}" = "" ]
-then
-  PARENT=`dirname \`which java\``
-  TESTJAVA=`dirname ${PARENT}`
-  echo "TESTJAVA not set, selecting " ${TESTJAVA}
-  echo "If this is incorrect, try setting the variable manually."
-fi
-
-if [ "${TESTCLASSES}" = "" ]
-then
-  echo "TESTCLASSES not set.  Test cannot execute.  Failed."
-  exit 1
-fi
-
-# set platform-dependent variables
-OS=`uname -s`
-case "$OS" in
-  SunOS | Linux | Darwin )
-    NULL=/dev/null
-    PS=":"
-    FS="/"
-    ;;
-  Windows_* )
-    NULL=NUL
-    PS=";"
-    FS="\\"
-    ;;
-  CYGWIN_* )
-    NULL=/dev/null
-    PS=";"
-    FS="/"
-    ;;
-  * )
-    echo "Unrecognized system!"
-    exit 1;
-    ;;
-esac
-
-JEMMYPATH=${CPAPPEND}
-CLASSPATH=.${PS}${TESTCLASSES}${PS}${JEMMYPATH} ; export CLASSPATH
-
-THIS_DIR=`pwd`
-
-${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} -fullversion
-
-${TESTJAVA}${FS}bin${FS}javac -d . ${TESTSRC}${FS}InternTest.java
-
-cp ${TESTSRC}${FS}badstrings.txt .
-
-${TESTJAVA}${FS}bin${FS}java ${TESTVMOPTS} -XX:+PrintStringTableStatistics -XX:+TraceSafepointCleanupTime InternTest bad > test.out 2>&1 &
-C_PID=$!
-
-sleep 60
-
-ps | grep ${C_PID} | grep -v grep
-
-if [ $? = 0 ]
-then
-    kill -9 ${C_PID}
-    echo "Test Failed"
-    exit 1
-else
-    echo "Test Passed"
-    exit 0
-fi