Name: viR10068 Date: 08/14/2001


The simple test for jni function GetDirectBufferAddress() is failed
on the jdk1.4.0-beta_refresh-b75. This function seems to return invalid address.

To reproduce:
1. compile the gdba00101m1.java
   Used: javac -d . gdba00101m1.java
2. compile the gdbc00101m1.c
   Used: cc -G -KPIC -o libjckjni.so -Iinclude gdba00101m1.c
   In 'include' directory you should place 3 files (see attachments):
   % ls include
   jckjlong_md.h jckjni.h jckjni_md.h

3. set environment variable LD_LIBRARY_PATH to working directory
4. run ndbb00101m1
   Used: java -Xfuture javasoft.sqe.tests.vm.jni.gdba001.gdba00101m1.gdba00101m1

Execution log:
% java -version
java version "1.4.0-beta_refresh"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta_refresh-b75)
Java HotSpot(TM) Client VM (build 1.4.0-beta_refresh-b75, mixed mode)
% java -Xfuture javasoft.sqe.tests.vm.jni.gdba001.gdba00101m1.gdba00101m1
JAVA: Checks data in buffer
JAVA: Put val: 3 Get val: 3
JAVA: Put val: 4 Get val: 4
JNI: data -12, testData 3
JAVA: Check of data in buffer failed
JAVA: Checks data in sliced buffer
JNI: data -12, testData 0
JAVA: Check of data in sliced buffer failed
%
---------------------------gdba00101m1.java ---------------------------
package javasoft.sqe.tests.vm.jni.gdba001.gdba00101m1;

import java.io.PrintStream;
import java.nio.ByteBuffer;
import java.nio.Buffer;

public class gdba00101m1 {

    private static native boolean checkBufferContents(Buffer buf, byte[] data);

    public static int testChecks(PrintStream out) {

        boolean res = false;
        try {
            byte[] testData = new byte[]{3, 4};

            ByteBuffer buf = ByteBuffer.allocateDirect(8);

            out.println("JAVA: Checks data in buffer");
            for(int i=0; i<testData.length; i++) {
                buf.put(i, testData[i]);
                out.println("JAVA: Put val: "+testData[i]+"\tGet val: "+buf.get(i));
            }

            if (!checkBufferContents(buf, testData)) {
                out.println("JAVA: Check of data in buffer failed");
                res = true;
            }

            buf.position(3);
            ByteBuffer buf2 = buf.slice();
            out.println("JAVA: Checks data in sliced buffer");

            if (!checkBufferContents(buf2, new byte[]{0, 2})) {
                out.println("JAVA: Check of data in sliced buffer failed");
                res = true;
            }

        } catch (Exception e) {
            e.printStackTrace();
            out.println("Unexpected exception: " + e);
            res = true;
        }

        if(res)
            return 2/*STATUS_FAILED*/;
        return 0/*STATUS_PASSED*/;
    }

    static String loadLibraryStatus = "";
    static {
        if(!loadLib("gdba00101m1"))
            loadLib("jckjni");
    }

    static boolean loadLib(String libName){
        try {
            System.loadLibrary(libName);
            loadLibraryStatus = null;
            return true;
        } catch (SecurityException e) {
            loadLibraryStatus += "loadLibrary(\"" + libName + "\") throws: " + e + "\n";
        } catch (UnsatisfiedLinkError e) {
            loadLibraryStatus += "loadLibrary(\"" + libName + "\") throws: " + e + "\n";
        }
        return false;
    }

    public static int run(String argv[], PrintStream out) {

        if (loadLibraryStatus!=null) {
            out.println("Library loading:\n" + loadLibraryStatus);
        }
        return testChecks(out);
    }

    public static void main(String argv[]) {
        System.exit(run(argv, System.out) + 95/*STATUS_TEMP*/);
    }
}
---------------------------gdba00101m1.c ---------------------------

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "jckjni.h"

#ifdef __cplusplus
extern "C" {
#endif

#ifndef JNI_ENV_ARG

#ifdef __cplusplus
#define JNI_ENV_ARG(x, y) y
#define JNI_ENV_PTR(x) x
#else
#define JNI_ENV_ARG(x,y) x, y
#define JNI_ENV_PTR(x) (*x)
#endif

#endif


JNIEXPORT jboolean JNICALL
Java_javasoft_sqe_tests_vm_jni_gdba001_gdba00101m1_gdba00101m1_checkBufferContents
(JNIEnv *env, jobject obj, jobject buf, jbyteArray arr) {

    jbyte* data = (jbyte*) JNI_ENV_PTR(env)->GetDirectBufferAddress(JNI_ENV_ARG(env,buf));
    jbyte* testData = JNI_ENV_PTR(env)->GetByteArrayElements(JNI_ENV_ARG(env,arr), NULL);

    if (data[0] != testData[0]) {
        printf("JNI: data %d, testData %d\n", data[0], testData[0]);
        return JNI_FALSE;
    }
    return JNI_TRUE;
}

#ifdef __cplusplus
}
#endif
---------------------------

The new JCK test
vm/jni/GetDirectBufferAddress/gdba001/gdba00101m1/gdba00101m1.html
is failed due to this bug.

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