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Java example source code file (hotspot.script)

This example Java source code file (hotspot.script) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

dyld_library_path, emacs, gdbscr, gnu, hotspot, jdk, jparms, launcher, ld_library_path, license, mydir, sbp, this, valgrind

The hotspot.script Java example source code

#!/bin/sh

# Copyright (c) 2010, 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.


# This script launches HotSpot.
#
# If the first parameter is either "-gdb" or "-gud", HotSpot will be
# launched inside gdb. "-gud" means "open an Emacs window and run gdb
# inside Emacs".
#
# If the first parameter is "-dbx", HotSpot will be launched inside dbx.
#
# If the first parameter is "-valgrind", HotSpot will be launched
# inside Valgrind (http://valgrind.kde.org) using the Memcheck skin,
# and with memory leak detection enabled.  This currently (2005jan19)
# requires at least Valgrind 2.3.0.  -Xmx16m will also be passed as
# the first parameter to HotSpot, since lowering HotSpot's memory
# consumption makes execution inside of Valgrind *a lot* faster.
#


#
# User changeable parameters ------------------------------------------------
#

# This is the name of the gdb binary to use
if [ ! "$GDB" ]
then
    GDB=gdb
fi

# This is the name of the gdb binary to use
if [ ! "$DBX" ]
then
    DBX=dbx
fi

# This is the name of the Valgrind binary to use
if [ ! "$VALGRIND" ]
then
    VALGRIND=valgrind
fi

# This is the name of Emacs for running GUD
EMACS=emacs

#
# End of user changeable parameters -----------------------------------------
#

# Make sure the paths are fully specified, i.e. they must begin with /.
REL_MYDIR=`dirname $0`
MYDIR=`cd $REL_MYDIR && pwd`

#
# Look whether the user wants to run inside gdb
case "$1" in
    -gdb)
        MODE=gdb
        shift
        ;;
    -gud)
        MODE=gud
        shift
        ;;
    -dbx)
        MODE=dbx
        shift
        ;;
    -valgrind)
        MODE=valgrind
        shift
        ;;
    *)
        MODE=run
        ;;
esac

if [ "${ALT_JAVA_HOME}" != "" ]; then
    JDK=${ALT_JAVA_HOME%%/jre}
else
    JDK=@@JDK_IMPORT_PATH@@
fi

if [ "${JDK}" = "" ]; then
    echo "Failed to find JDK.  Either ALT_JAVA_HOME is not set or JDK_IMPORT_PATH is empty."
fi

# We will set the LD_LIBRARY_PATH as follows:
#     o		$JVMPATH (directory portion only)
#     o		$JRE/lib/$ARCH
# followed by the user's previous effective LD_LIBRARY_PATH, if
# any.
JRE=$JDK/jre
JAVA_HOME=$JDK
export JAVA_HOME

ARCH=@@LIBARCH@@
SBP=${MYDIR}:${JRE}/lib/${ARCH}


# Set up a suitable LD_LIBRARY_PATH or DYLD_LIBRARY_PATH
OS=`uname -s`
if [ "${OS}" = "Darwin" ]
then
    if [ -z "$DYLD_LIBRARY_PATH" ]
    then
        DYLD_LIBRARY_PATH="$SBP"
    else
        DYLD_LIBRARY_PATH="$SBP:$DYLD_LIBRARY_PATH"
    fi
    export DYLD_LIBRARY_PATH
else
    # not 'Darwin'
    if [ -z "$LD_LIBRARY_PATH" ]
    then
        LD_LIBRARY_PATH="$SBP"
    else
        LD_LIBRARY_PATH="$SBP:$LD_LIBRARY_PATH"
    fi
    export LD_LIBRARY_PATH
fi

JPARMS="-Dsun.java.launcher=gamma -XXaltjvm=$MYDIR $@ $JAVA_ARGS";

# Locate the java launcher
LAUNCHER=$JDK/bin/java
if [ ! -x $LAUNCHER ] ; then
    echo Error: Cannot find the java launcher \"$LAUNCHER\"
    exit 1
fi

GDBSRCDIR=$MYDIR
BASEDIR=`cd $MYDIR/../../.. && pwd`

init_gdb() {
# Create a gdb script in case we should run inside gdb
    GDBSCR=/tmp/hsl.$$
    rm -f $GDBSCR
    cat >>$GDBSCR <

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