#

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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

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#

# This code is distributed in the hope that it will be useful, but WITHOUT

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# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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#

# @test

# @bug 6942989

# @summary Check for WeakReference leak in Logger objects

# @author Daniel D. Daugherty

#

# @run shell/timeout=240 LoggerWeakRefLeak.sh

#

TEST_NAME="LoggerWeakRefLeak"

TARGET_CLASS="java\.lang\.ref\.WeakReference"

# MAIN begins here

#

seconds=

if [ "$#" -gt 0 ]; then

    seconds="$1"

fi

# see if this version of jmap supports the '-histo:live' option

jmap_option="-histo:live"

set +e

status="$?"

set -e

    echo "INFO: switching jmap option from '$jmap_option'\c"

    jmap_option="-histo"

    echo " to '$jmap_option'."

fi

decreasing_cnt=0

increasing_cnt=0

loop_cnt=0

prev_instance_cnt=0

while true; do

    # Output format for 'jmap -histo' in JDK1.5.0:

    #

    #     <#bytes> <#instances> <class_name>

    #

    # Output format for 'jmap -histo:live':

    #

    #     <num>: <#instances> <#bytes> <class_name>

    #

    set +e

    status="$?"

    set -e

    if [ "$status" != 0 ]; then

        echo "INFO: jmap exited with exit code = $status"

            echo "FAIL: jmap is unable to take any samples." >&2

            exit 2

        fi

    fi

        | sed '

            # strip leading whitespace; does nothing in JDK1.5.0

            # strip <#bytes> in JDK1.5.0; does nothing otherwise

            # strip <num>: field; does nothing in JDK1.5.0

            # strip <class_name> field

            '`

    if [ -z "$instance_cnt" ]; then

        echo "INFO: instance count is unexpectedly empty"

        if [ "$loop_cnt" = 0 ]; then

            echo "INFO: on the first iteration so no sample was found."

            echo "INFO: There is likely a problem with the sed filter."

            echo "INFO: start of jmap output:"

            cat "$TEST_NAME.jmap"

            echo "INFO: end of jmap output."

            echo "FAIL: cannot find the instance count value." >&2

            exit 2

        fi

    else

        echo "INFO: instance_cnt = $instance_cnt"

        if [ "$instance_cnt" -gt "$prev_instance_cnt" ]; then

            increasing_cnt=`expr $increasing_cnt + 1`

        else

            decreasing_cnt=`expr $decreasing_cnt + 1`

        fi

        prev_instance_cnt="$instance_cnt"

    fi

    # delay between samples

    sleep 5

    loop_cnt=`expr $loop_cnt + 1`

done

echo "INFO: increasing_cnt = $increasing_cnt"

echo "INFO: decreasing_cnt = $decreasing_cnt"

echo "INFO: The instance count of" `eval echo $TARGET_CLASS` "objects"

if [ "$decreasing_cnt" = 0 ]; then

    echo "INFO: is always increasing."

    echo "FAIL: This indicates that there is a memory leak." >&2

    exit 2

fi

echo "PASS: This indicates that there is not a memory leak."

exit 0