Name: szC45993 Date: 02/01/2000



/net/sqesvr/vsn/testbase/testbase_nsk/src/nsk/arguments/args00127 test
destroys java_g (java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-S)
Java HotSpot(TM) Client VM (build 1.3.0rc1-S-debug, interpreted mode))
on Solaris (SunOS 5.7 sun4u sparc).

See log and source below.

LOG:
====

novo81% /export/ld24/java/hotspot/jdk1.3.0/solaris/bin/java_g -version
java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-S)
Java HotSpot(TM) Client VM (build 1.3.0rc1-S-debug, interpreted mode)
novo81% cd /export/ld24/java/zss/TONGA_WSs/testbase_js/src/nsk/arguments/args00127
novo81% /export/ld24/java/hotspot/jdk1.3.0/solaris/bin/java_g -XX:+PrintBytecodePairHistogram -verify args00127
VM option '+PrintBytecodePairHistogram'
#
# HotSpot Virtual Machine Error, assertion failure
#
# assert(nbits == 32 || -(1 << nbits-1) <= x && x < ( 1 << nbits-1), "value out of range")
#
# Error ID: /usr/re/hotsparc_client1.3/ws/solsparc/hotsparc_client1.3fcs/build/solaris/../../src/cpu/sparc/vm/assembler_sparc.hpp, 960 [ Unknown ]
#
Dumping core....
Abort (core dumped)
novo81%


SOURCE:
========
//args00127.java
/* This test simply creates a series of circularly
 * linked memeory objects which should be able to be
 * GC'd
 */


class MemoryObject
{
    byte array[];
    MemoryObject next;
    MemoryObject previous;

    public MemoryObject(int size)
    {
        array = new byte[size];
    }
}

class args00127
{
    static final int ARRAY_SIZE = 100;
    static final int OBJECT_SIZE = 10;
    static final int LOOP_COUNT = 5;
    static final int CIRCULARITY_SIZE = 3;

    static MemoryObject memoryArray[] = new MemoryObject[ARRAY_SIZE];

    public static void main(String args[])
    {
        for (int j = 0; j < LOOP_COUNT; j++)
        {
            System.out.println(j + ": " + Runtime.getRuntime().freeMemory());
            for (int i = 0; i < ARRAY_SIZE; i ++)
            {
                memoryArray[i] = new MemoryObject(OBJECT_SIZE);
                makeCircular(memoryArray[i], CIRCULARITY_SIZE);
            }
        }

        // if there's any memory left, let's assume it's okay
        System.out.println("Test passed.");

    }

    public static void makeCircular(MemoryObject mObj, int depth)
    {
MemoryObject tmpObj = mObj;

        for (int i = 0; i < depth; i++)
        {
            tmpObj.next = new MemoryObject(OBJECT_SIZE);
            tmpObj= tmpObj.next;
        }
tmpObj.next = mObj;
    }

    public static void confirmCircular(MemoryObject mObj)
    {
int count = 0;
MemoryObject mObj2 = mObj;
while (mObj2.next != mObj)
{
count++;
mObj2 = mObj2.next;
}
System.out.println("Circularity level: " + count);
    }
}
//-------------------------------------------------------------


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