MappedByteBuffer*Stream:

- Validate active and GC'ed mapped-buffer count
  in cleanAllSlices() via close() ..

- Fix missing unmapping last buffer in notifyLengthChangeImpl(),
  branch criteria was off by one.

- cleanSlice(..) now also issues cleanBuffer(..) on the GC'ed entry,
  hence if WeakReference is still alive, enforce it's release.

- cleanBuffer(..) reverts FLUSH_PRE_HARD -> FLUSH_PRE_SOFT
  in case of an error.

- flush() -> flush(boolean metaData) to expose FileChannel.force(metaData).

- Add synchronous mode, flushing/syncing the mapped buffers when
  in READ_WRITE mapping mode and issue FileChannel.force() if not READ_ONLY.

  Above is implemented via flush()/flushImpl(..) for buffers and FileChannel,
  as well as in syncSlice(..) for buffers only.

  flush*()/syncSlice() is covered by:
    - setLength()
    - notifyLengthChange*(..)
    - nextSlice()

  Always issue flushImpl() in close().

- Windows: Clean all buffers in setLength(),
  otherwise Windows will report:

- Windows: Catch MappedByteBuffer.force() IOException

- Optimization of position(..)
  position(..) is now standalone to allow issuing flushSlice(..)
  before gathering the new mapped buffer.
  This shall avoid one extra cache miss.

  Hence rename positionImpl(..) -> position2(..).

- All MappedByteBufferOutputStream.write(..) methods
  issue syncSlice(..) on the last written current slice
  to ensure new 'synchronous' mode is honored.

+++

Unit tests:

- Ensure test files are being deleted

- TestByteBufferCopyStream: Reduced test file size to more sensible values.

-

3 files changed, 251 insertions, 189 deletions

diff --git a/src/junit/com/jogamp/common/nio/TestByteBufferCopyStream.java b/src/junit/com/jogamp/common/nio/TestByteBufferCopyStream.java
index 3442159..fef26b6 100644
--- a/src/junit/com/jogamp/common/nio/TestByteBufferCopyStream.java
+++ b/src/junit/com/jogamp/common/nio/TestByteBufferCopyStream.java
@@ -100,74 +100,107 @@ public class TestByteBufferCopyStream extends JunitTracer {
         Assert.assertEquals(0, mos.position());
         Assert.assertEquals(0, mos.remaining());
 
-        mos.write(mis, mis.remaining());
+        OutOfMemoryError oome = null;
+        IOException ioe = null;
 
-        Assert.assertEquals(size, input.length());
-        Assert.assertEquals(size, output.length());
-        Assert.assertEquals(size, mis.length());
-        Assert.assertEquals(size, mos.length());
-        Assert.assertEquals(size, mis.position());
-        Assert.assertEquals(size, mos.position());
-        Assert.assertEquals(0, mis.remaining());
-        Assert.assertEquals(0, mos.remaining());
-
-        mos.close();
-        mis.close();
-        input.close();
-        output.close();
-        srcFile.delete();
-        dstFile.delete();
-        TestByteBufferInputStream.dumpMem(prefix+" after ", runtime, usedMem0[0], freeMem0[0], usedMem1, freeMem1 );
-        System.gc();
         try {
-            Thread.sleep(500);
-        } catch (final InterruptedException e) { }
-        TestByteBufferInputStream.dumpMem(prefix+" gc'ed ", runtime, usedMem0[0], freeMem0[0], usedMem1, freeMem1 );
+            mos.write(mis, mis.remaining());
+
+            Assert.assertEquals(size, input.length());
+            Assert.assertEquals(size, output.length());
+            Assert.assertEquals(size, mis.length());
+            Assert.assertEquals(size, mos.length());
+            Assert.assertEquals(size, mis.position());
+            Assert.assertEquals(size, mos.position());
+            Assert.assertEquals(0, mis.remaining());
+            Assert.assertEquals(0, mos.remaining());
+
+        } catch (final IOException e) {
+            if( e.getCause() instanceof OutOfMemoryError ) {
+                oome = (OutOfMemoryError) e.getCause(); // oops
+            } else {
+                ioe = e;
+            }
+        } catch (final OutOfMemoryError m) {
+            oome = m; // oops
+        } finally {
+            mos.close();
+            mis.close();
+            input.close();
+            output.close();
+            srcFile.delete();
+            dstFile.delete();
+            TestByteBufferInputStream.dumpMem(prefix+" after ", runtime, usedMem0[0], freeMem0[0], usedMem1, freeMem1 );
+            System.gc();
+            try {
+                Thread.sleep(500);
+            } catch (final InterruptedException e) { }
+            TestByteBufferInputStream.dumpMem(prefix+" gc'ed ", runtime, usedMem0[0], freeMem0[0], usedMem1, freeMem1 );
+        }
+        if( null != ioe || null != oome ) {
+            if( null != oome ) {
+                System.err.printf("%s: OutOfMemoryError.2 %s%n", prefix, oome.getMessage());
+                oome.printStackTrace();
+            } else {
+                Assert.assertNull(ioe);
+            }
+        }
     }
 
+    /** {@value} */
+    static final long halfMiB = 1L << 19;
+    /** {@value} */
+    static final long oneGiB = 1L << 30;
+    /** {@value} */
+    static final long onePlusGiB = oneGiB + halfMiB;
+    /** {@value} */
+    static final long twoGiB = ( 2L << 30 );
+    /** {@value} */
+    static final long twoPlusGiB = twoGiB + halfMiB;
+
     @Test
     public void test00() throws IOException {
         final int srcSliceShift = MappedByteBufferInputStream.DEFAULT_SLICE_SHIFT;
         final int dstSliceShift = MappedByteBufferInputStream.DEFAULT_SLICE_SHIFT;
-        final long size = 3L * ( 1L << 30 ); // 3 GiB
-        testImpl("./testIn.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_HARD, srcSliceShift,
-                 "./testOut.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_HARD, dstSliceShift );
+        final long size = twoPlusGiB;
+        testImpl(getSimpleTestName(".")+"_In.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_HARD, srcSliceShift,
+                 getSimpleTestName(".")+"_Out.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_HARD, dstSliceShift );
     }
 
     @Test
     public void test01() throws IOException {
         final int srcSliceShift = MappedByteBufferInputStream.DEFAULT_SLICE_SHIFT;
         final int dstSliceShift = MappedByteBufferInputStream.DEFAULT_SLICE_SHIFT;
-        final long size = 3L * ( 1L << 30 ); // 3 GiB
-        testImpl("./testIn.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
-                 "./testOut.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
+        final long size = twoPlusGiB;
+        testImpl(getSimpleTestName(".")+"_In.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
+                 getSimpleTestName(".")+"_Out.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
     }
 
     @Test
     public void test02() throws IOException {
         final int srcSliceShift = 28; // 256M bytes per slice
         final int dstSliceShift = 28; // 256M bytes per slice
-        final long size = 3L * ( 1L << 30 ); // 3 GiB
-        testImpl("./testIn.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
-                 "./testOut.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
+        final long size = onePlusGiB;
+        testImpl(getSimpleTestName(".")+"_In.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
+                 getSimpleTestName(".")+"_Out.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
     }
 
     @Test
     public void test11() throws IOException {
         final int srcSliceShift = 28; // 256M bytes per slice
         final int dstSliceShift = 27; // 128M bytes per slice
-        final long size = 3L * ( 1L << 30 ); // 3 GiB
-        testImpl("./testIn.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
-                 "./testOut.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
+        final long size = onePlusGiB;
+        testImpl(getSimpleTestName(".")+"_In.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
+                 getSimpleTestName(".")+"_Out.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
     }
 
     @Test
     public void test12() throws IOException {
         final int srcSliceShift = 27; // 128M bytes per slice
         final int dstSliceShift = 28; // 256M bytes per slice
-        final long size = 3L * ( 1L << 30 ); // 3 GiB
-        testImpl("./testIn.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
-                 "./testOut.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
+        final long size = onePlusGiB;
+        testImpl(getSimpleTestName(".")+"_In.bin", size, MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, srcSliceShift,
+                 getSimpleTestName(".")+"_Out.bin", MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT, dstSliceShift );
     }
 
     public static void main(final String args[]) throws IOException {
diff --git a/src/junit/com/jogamp/common/nio/TestByteBufferOutputStream.java b/src/junit/com/jogamp/common/nio/TestByteBufferOutputStream.java
index c06dbe8..f57101e 100644
--- a/src/junit/com/jogamp/common/nio/TestByteBufferOutputStream.java
+++ b/src/junit/com/jogamp/common/nio/TestByteBufferOutputStream.java
@@ -52,180 +52,196 @@ public class TestByteBufferOutputStream extends JunitTracer {
                          final int sliceShift)
             throws IOException
     {
+        testImpl(fname, payLoad, payLoadOffset, postPayLoadFiller, endBytes, sliceShift, false);
+        testImpl(fname, payLoad, payLoadOffset, postPayLoadFiller, endBytes, sliceShift, true);
+    }
+    static void testImpl(final String fname,
+                         final byte[] payLoad, final long payLoadOffset, final long postPayLoadFiller,
+                         final byte[] endBytes,
+                         final int sliceShift, final boolean synchronous)
+            throws IOException
+    {
         final File file = new File(fname);
         file.delete();
         file.createNewFile();
         file.deleteOnExit();
-        final RandomAccessFile out = new RandomAccessFile(file, "rw");
-        final MappedByteBufferInputStream.FileResizeOp szOp = new MappedByteBufferInputStream.FileResizeOp() {
-            @Override
-            public void setLength(final long newSize) throws IOException {
-                out.setLength(newSize);
-            }
-        };
-        final MappedByteBufferInputStream mis = new MappedByteBufferInputStream(out.getChannel(),
-                                                                                FileChannel.MapMode.READ_WRITE,
-                                                                                MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT,
-                                                                                sliceShift);
-        final MappedByteBufferOutputStream mos = mis.getOutputStream(szOp);
 
-        // resize to payLoad start and position to it
-        mos.setLength(payLoadOffset);
-        Assert.assertEquals(payLoadOffset, out.length());
-        Assert.assertEquals(payLoadOffset, mos.length());
-        Assert.assertEquals(0, mos.position()); // no change
-        mos.position(payLoadOffset);
-        Assert.assertEquals(payLoadOffset, mos.position());
+        try {
+            final RandomAccessFile out = new RandomAccessFile(file, "rw");
+            final MappedByteBufferInputStream.FileResizeOp szOp = new MappedByteBufferInputStream.FileResizeOp() {
+                @Override
+                public void setLength(final long newSize) throws IOException {
+                    out.setLength(newSize);
+                }
+            };
+            final MappedByteBufferInputStream mis = new MappedByteBufferInputStream(out.getChannel(),
+                                                                                    FileChannel.MapMode.READ_WRITE,
+                                                                                    MappedByteBufferInputStream.CacheMode.FLUSH_PRE_SOFT,
+                                                                                    sliceShift);
+            final MappedByteBufferOutputStream mos = mis.getOutputStream(szOp);
+            mos.setSynchronous(synchronous);
 
-        // mark, write-expand payLoad
-        mis.mark(1);
-        mos.write(payLoad);
-        Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+            try {
+                // resize to payLoad start and position to it
+                mos.setLength(payLoadOffset);
+                Assert.assertEquals(payLoadOffset, out.length());
+                Assert.assertEquals(payLoadOffset, mos.length());
+                Assert.assertEquals(0, mos.position()); // no change
+                mos.position(payLoadOffset);
+                Assert.assertEquals(payLoadOffset, mos.position());
 
-        // expand + 1
-        mos.setLength(payLoadOffset+payLoad.length+1);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position()); // no change
+                // mark, write-expand payLoad
+                mis.mark(1);
+                mos.write(payLoad);
+                Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
 
-        // expand up-to very end, ahead of write - position to endBytes start
-        mos.setLength(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length);
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position()); // no change
-        mos.skip(postPayLoadFiller);
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller, mos.position());
+                // expand + 1
+                mos.setLength(payLoadOffset+payLoad.length+1);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position()); // no change
 
-        // write endBytes (no resize)
-        mos.write(endBytes);
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.position());
+                // expand up-to very end, ahead of write - position to endBytes start
+                mos.setLength(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length);
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position()); // no change
+                mos.skip(postPayLoadFiller);
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller, mos.position());
 
-        // Reset to payLoad, read it and verify
-        mis.reset();
-        Assert.assertEquals(payLoadOffset, mos.position());
-        Assert.assertEquals(payLoadOffset, mis.position());
-        final byte[] tmp = new byte[payLoad.length];
-        Assert.assertEquals(payLoad.length, mis.read(tmp));
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mis.position());
-        Assert.assertArrayEquals(payLoad, tmp);
+                // write endBytes (no resize)
+                mos.write(endBytes);
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.position());
 
-        // Shrink to end of payLoad, mark, read >= 0, reset .. redo
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.length());
-        mos.setLength(payLoadOffset+payLoad.length+1);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        mis.mark(1);
-        Assert.assertTrue(mis.read()>=0);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
-        mis.reset();
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertTrue(mis.read()>=0);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                // Reset to payLoad, read it and verify
+                mis.reset();
+                Assert.assertEquals(payLoadOffset, mos.position());
+                Assert.assertEquals(payLoadOffset, mis.position());
+                final byte[] tmp = new byte[payLoad.length];
+                Assert.assertEquals(payLoad.length, mis.read(tmp));
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mis.position());
+                Assert.assertArrayEquals(payLoad, tmp);
 
-        // Shrink -1, read EOS
-        mos.setLength(payLoadOffset+payLoad.length);
-        Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertEquals(-1, mis.read());
+                // Shrink to end of payLoad, mark, read >= 0, reset .. redo
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+postPayLoadFiller+endBytes.length, mos.length());
+                mos.setLength(payLoadOffset+payLoad.length+1);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                mis.mark(1);
+                Assert.assertTrue(mis.read()>=0);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                mis.reset();
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertTrue(mis.read()>=0);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
 
-        // Expand + 1, mark, read >= 0, reset .. redo
-        mos.setLength(payLoadOffset+payLoad.length+1);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        mis.mark(1);
-        Assert.assertTrue(mis.read()>=0);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
-        mis.reset();
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertTrue(mis.read()>=0);
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                // Shrink -1, read EOS
+                mos.setLength(payLoadOffset+payLoad.length);
+                Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertEquals(-1, mis.read());
 
-        // Shrink -1, read EOS, write-expand, reset and verify
-        mos.setLength(payLoadOffset+payLoad.length);
-        Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertEquals(-1, mis.read());
-        mos.write('Z'); // expand while writing ..
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
-        mis.reset();
-        Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
-        Assert.assertEquals(payLoadOffset+payLoad.length, mis.position());
-        Assert.assertEquals('Z', mis.read());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
-        Assert.assertEquals(payLoadOffset+payLoad.length+1, mis.position());
+                // Expand + 1, mark, read >= 0, reset .. redo
+                mos.setLength(payLoadOffset+payLoad.length+1);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                mis.mark(1);
+                Assert.assertTrue(mis.read()>=0);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                mis.reset();
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertTrue(mis.read()>=0);
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
 
-        // Shrink -2, shall clear mark, test reset failure
-        mos.setLength(payLoadOffset+payLoad.length-1);
-        Assert.assertEquals(payLoadOffset+payLoad.length-1, out.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length-1, mos.length());
-        Assert.assertEquals(payLoadOffset+payLoad.length-1, mos.position());
-        try {
-            mis.reset();
-            Assert.assertTrue(false); // shall not reach
-        } catch( final IOException ioe ) {
-            Assert.assertNotNull(ioe);
-        }
-        mis.mark(1);
+                // Shrink -1, read EOS, write-expand, reset and verify
+                mos.setLength(payLoadOffset+payLoad.length);
+                Assert.assertEquals(payLoadOffset+payLoad.length, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertEquals(-1, mis.read());
+                mos.write('Z'); // expand while writing ..
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                mis.reset();
+                Assert.assertEquals(payLoadOffset+payLoad.length, mos.position());
+                Assert.assertEquals(payLoadOffset+payLoad.length, mis.position());
+                Assert.assertEquals('Z', mis.read());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mos.position());
+                Assert.assertEquals(payLoadOffset+payLoad.length+1, mis.position());
 
-        // ZERO file, test reset failure, read EOS, write-expand
-        mos.setLength(0);
-        Assert.assertEquals(0, out.length());
-        Assert.assertEquals(0, mos.length());
-        Assert.assertEquals(0, mos.position());
-        try {
-            mis.reset();
-            Assert.assertTrue(false); // shall not reach
-        } catch( final IOException ioe ) {
-            Assert.assertNotNull(ioe);
-        }
-        Assert.assertEquals(-1, mis.read());
-        mos.write('Z'); // expand while writing ..
-        Assert.assertEquals(1, out.length());
-        Assert.assertEquals(1, mos.length());
-        Assert.assertEquals(1, mos.position());
-        mis.position(0);
-        Assert.assertEquals(0, mos.position());
-        Assert.assertEquals(0, mis.position());
-        Assert.assertEquals('Z', mis.read());
+                // Shrink -2, shall clear mark, test reset failure
+                mos.setLength(payLoadOffset+payLoad.length-1);
+                Assert.assertEquals(payLoadOffset+payLoad.length-1, out.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length-1, mos.length());
+                Assert.assertEquals(payLoadOffset+payLoad.length-1, mos.position());
+                try {
+                    mis.reset();
+                    Assert.assertTrue(false); // shall not reach
+                } catch( final IOException ioe ) {
+                    Assert.assertNotNull(ioe);
+                }
+                mis.mark(1);
 
-        mos.close();
-        mis.close();
-        out.close();
-        file.delete();
+                // ZERO file, test reset failure, read EOS, write-expand
+                mos.setLength(0);
+                Assert.assertEquals(0, out.length());
+                Assert.assertEquals(0, mos.length());
+                Assert.assertEquals(0, mos.position());
+                try {
+                    mis.reset();
+                    Assert.assertTrue(false); // shall not reach
+                } catch( final IOException ioe ) {
+                    Assert.assertNotNull(ioe);
+                }
+                Assert.assertEquals(-1, mis.read());
+                mos.write('Z'); // expand while writing ..
+                Assert.assertEquals(1, out.length());
+                Assert.assertEquals(1, mos.length());
+                Assert.assertEquals(1, mos.position());
+                mis.position(0);
+                Assert.assertEquals(0, mos.position());
+                Assert.assertEquals(0, mis.position());
+                Assert.assertEquals('Z', mis.read());
+            } finally {
+                mos.close();
+                mis.close();
+                out.close();
+            }
+        } finally {
+            file.delete();
+        }
     }
 
     @Test
     public void test00() throws IOException {
         final int sliceShift = 13; // 8192 bytes per slice
-        testImpl("./test01.bin", "123456789AB".getBytes(), 0L, 0L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", "123456789AB".getBytes(), 0L, 0L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
     public void test01() throws IOException {
         final int sliceShift = 13; // 8192 bytes per slice
-        testImpl("./test01.bin", "123456789AB".getBytes(), 9000L, 100L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", "123456789AB".getBytes(), 9000L, 100L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
     public void test02() throws IOException {
         final int sliceShift = 13; // 8192 bytes per slice
-        testImpl("./test01.bin", "123456789AB".getBytes(), 8189L, 9001L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", "123456789AB".getBytes(), 8189L, 9001L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
     public void test03() throws IOException {
         final int sliceShift = 13; // 8192 bytes per slice
-        testImpl("./test01.bin", "123456789AB".getBytes(), 58189L, 109001L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", "123456789AB".getBytes(), 58189L, 109001L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
@@ -235,7 +251,7 @@ public class TestByteBufferOutputStream extends JunitTracer {
         for(int i=0; i<payLoad.length; i++) {
             payLoad[i] = (byte)('A' + i%26);
         }
-        testImpl("./test01.bin", payLoad, 0L, 0L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", payLoad, 0L, 0L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
@@ -245,7 +261,7 @@ public class TestByteBufferOutputStream extends JunitTracer {
         for(int i=0; i<payLoad.length; i++) {
             payLoad[i] = (byte)('A' + i%26);
         }
-        testImpl("./test01.bin", payLoad, 1030L, 99L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", payLoad, 1030L, 99L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
@@ -255,7 +271,7 @@ public class TestByteBufferOutputStream extends JunitTracer {
         for(int i=0; i<payLoad.length; i++) {
             payLoad[i] = (byte)('A' + i%26);
         }
-        testImpl("./test01.bin", payLoad, 1021L, 1301L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", payLoad, 1021L, 1301L, "EOF".getBytes(), sliceShift);
     }
 
     @Test
@@ -265,7 +281,7 @@ public class TestByteBufferOutputStream extends JunitTracer {
         for(int i=0; i<payLoad.length; i++) {
             payLoad[i] = (byte)('A' + i%26);
         }
-        testImpl("./test01.bin", payLoad, 3021L, 6301L, "EOF".getBytes(), sliceShift);
+        testImpl(getSimpleTestName(".")+".bin", payLoad, 3021L, 6301L, "EOF".getBytes(), sliceShift);
     }
 
     public static void main(final String args[]) throws IOException {
diff --git a/src/junit/com/jogamp/common/util/TestIOUtil01.java b/src/junit/com/jogamp/common/util/TestIOUtil01.java
index 2a9c857..68f472f 100644
--- a/src/junit/com/jogamp/common/util/TestIOUtil01.java
+++ b/src/junit/com/jogamp/common/util/TestIOUtil01.java
@@ -38,6 +38,7 @@ import java.io.OutputStream;
 import java.net.URLConnection;
 import java.nio.ByteBuffer;
 
+import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -60,6 +61,7 @@ public class TestIOUtil01 extends JunitTracer {
     @BeforeClass
     public static void setup() throws IOException {
         final File tfile = new File(tfilename);
+        tfile.deleteOnExit();
         final OutputStream tout = new BufferedOutputStream(new FileOutputStream(tfile));
         for(int i=0; i<tsz; i++) {
             final byte b = (byte) (i%256);
@@ -69,6 +71,12 @@ public class TestIOUtil01 extends JunitTracer {
         tout.close();
     }
 
+    @AfterClass
+    public static void cleanup() {
+        final File tfile = new File(tfilename);
+        tfile.delete();
+    }
+
     @Test
     public void testCopyStream01Array() throws IOException {
         final URLConnection urlConn = IOUtil.getResource(this.getClass(), tfilename);
@@ -109,21 +117,26 @@ public class TestIOUtil01 extends JunitTracer {
         Assert.assertNotNull(urlConn1);
 
         final File file2 = new File(tfilename2);
-        IOUtil.copyURLConn2File(urlConn1, file2);
-        final URLConnection urlConn2 = IOUtil.getResource(this.getClass(), tfilename2);
-        Assert.assertNotNull(urlConn2);
-
-        final BufferedInputStream bis = new BufferedInputStream( urlConn2.getInputStream() );
-        final ByteBuffer bb;
+        file2.deleteOnExit();
         try {
-            bb = IOUtil.copyStream2ByteBuffer( bis );
+            IOUtil.copyURLConn2File(urlConn1, file2);
+            final URLConnection urlConn2 = IOUtil.getResource(this.getClass(), tfilename2);
+            Assert.assertNotNull(urlConn2);
+
+            final BufferedInputStream bis = new BufferedInputStream( urlConn2.getInputStream() );
+            final ByteBuffer bb;
+            try {
+                bb = IOUtil.copyStream2ByteBuffer( bis );
+            } finally {
+                IOUtil.close(bis, false);
+            }
+            Assert.assertEquals("Byte number not equal orig vs buffer", orig.length, bb.limit());
+            int i;
+            for(i=tsz-1; i>=0 && orig[i]==bb.get(i); i--) ;
+            Assert.assertTrue("Bytes not equal orig vs array", 0>i);
         } finally {
-            IOUtil.close(bis, false);
+            file2.delete();
         }
-        Assert.assertEquals("Byte number not equal orig vs buffer", orig.length, bb.limit());
-        int i;
-        for(i=tsz-1; i>=0 && orig[i]==bb.get(i); i--) ;
-        Assert.assertTrue("Bytes not equal orig vs array", 0>i);
     }
 
     public static void main(final String args[]) throws IOException {