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Correct usages of internalNioBuffer 

Motivation:
There are numerous usages of internalNioBuffer which hard code 0 for the index when the intention was to use the readerIndex().

Modifications:
- Remove hard coded 0 for the index and use readerIndex()

Result:
We are less susceptible to using the wrong index, and don't make assumptions about the ByteBufAllocator.
This commit is contained in:
Scott Mitchell 2017-03-02 09:09:27 -08:00
parent 675980c7ff
commit 2cff918044
5 changed files with 12 additions and 12 deletions
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6
buffer/src/main/java/io/netty/buffer/ByteBufUtil.java
View File

@ -588,7 +588,7 @@ public final class ByteBufUtil {
dst = alloc.buffer(length);
}
try {
final ByteBuffer dstBuf = dst.internalNioBuffer(0, length);
final ByteBuffer dstBuf = dst.internalNioBuffer(dst.readerIndex(), length);
final int pos = dstBuf.position();
CoderResult cr = encoder.encode(src, dstBuf, true);
if (!cr.isUnderflow()) {
@ -635,7 +635,7 @@ public final class ByteBufUtil {
try {
buffer.writeBytes(src, readerIndex, len);
// Use internalNioBuffer(...) to reduce object creation.
decodeString(decoder, buffer.internalNioBuffer(0, len), dst);
decodeString(decoder, buffer.internalNioBuffer(buffer.readerIndex(), len), dst);
} finally {
// Release the temporary buffer again.
buffer.release();
@ -1087,7 +1087,7 @@ public final class ByteBufUtil {
ByteBuf heapBuffer = buf.alloc().heapBuffer(length);
try {
heapBuffer.writeBytes(buf, index, length);
decoder.decode(heapBuffer.internalNioBuffer(0, length));
decoder.decode(heapBuffer.internalNioBuffer(heapBuffer.readerIndex(), length));
} finally {
heapBuffer.release();
}

7
buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java
View File

@ -2120,14 +2120,14 @@ public abstract class AbstractByteBufTest {
private void testInternalNioBuffer(int a) {
ByteBuf buffer = newBuffer(2);
ByteBuffer buf = buffer.internalNioBuffer(0, 1);
ByteBuffer buf = buffer.internalNioBuffer(buffer.readerIndex(), 1);
assertEquals(1, buf.remaining());
byte[] data = new byte[a];
PlatformDependent.threadLocalRandom().nextBytes(data);
buffer.writeBytes(data);
buf = buffer.internalNioBuffer(0, a);
buf = buffer.internalNioBuffer(buffer.readerIndex(), a);
assertEquals(a, buf.remaining());
for (int i = 0; i < a; i++) {
@ -2972,7 +2972,8 @@ public abstract class AbstractByteBufTest {
@Test(expected = IllegalReferenceCountException.class)
public void testInternalNioBufferAfterRelease() {
releasedBuffer().internalNioBuffer(0, 1);
ByteBuf releasedBuffer = releasedBuffer();
releasedBuffer.internalNioBuffer(releasedBuffer.readerIndex(), 1);
}
@Test(expected = IllegalReferenceCountException.class)

2
buffer/src/test/java/io/netty/buffer/EmptyByteBufTest.java
View File

@ -50,7 +50,7 @@ public class EmptyByteBufTest {
assertThat(empty.nioBuffer().position(), is(0));
assertThat(empty.nioBuffer().limit(), is(0));
assertThat(empty.nioBuffer(), is(sameInstance(empty.nioBuffer())));
assertThat(empty.nioBuffer(), is(sameInstance(empty.internalNioBuffer(0, 0))));
assertThat(empty.nioBuffer(), is(sameInstance(empty.internalNioBuffer(empty.readerIndex(), 0))));
}
@Test

3
handler/src/main/java/io/netty/handler/ssl/SslHandler.java
View File

@ -198,7 +198,6 @@ public class SslHandler extends ByteToMessageDecoder implements ChannelOutboundH
handler.singleBuffer[0] = toByteBuffer(out, writerIndex,
out.writableBytes());
result = opensslEngine.unwrap(in.nioBuffers(readerIndex, len), handler.singleBuffer);
out.writerIndex(writerIndex + result.bytesProduced());
} finally {
handler.singleBuffer[0] = null;
}
@ -828,7 +827,7 @@ public class SslHandler extends ByteToMessageDecoder implements ChannelOutboundH
newDirectIn = alloc.directBuffer(readableBytes);
newDirectIn.writeBytes(in, readerIndex, readableBytes);
in0 = singleBuffer;
in0[0] = newDirectIn.internalNioBuffer(0, readableBytes);
in0[0] = newDirectIn.internalNioBuffer(newDirectIn.readerIndex(), readableBytes);
}
for (;;) {

6
transport/src/test/java/io/netty/channel/ChannelOutboundBufferTest.java
View File

@ -52,7 +52,7 @@ public class ChannelOutboundBufferTest {
assertEquals(0, buffer.nioBufferCount());
ByteBuf buf = copiedBuffer("buf1", CharsetUtil.US_ASCII);
ByteBuffer nioBuf = buf.internalNioBuffer(0, buf.readableBytes());
ByteBuffer nioBuf = buf.internalNioBuffer(buf.readerIndex(), buf.readableBytes());
buffer.addMessage(buf, buf.readableBytes(), channel.voidPromise());
assertEquals("Should still be 0 as not flushed yet", 0, buffer.nioBufferCount());
buffer.addFlush();
@ -84,7 +84,7 @@ public class ChannelOutboundBufferTest {
ByteBuffer[] buffers = buffer.nioBuffers();
assertEquals(64, buffer.nioBufferCount());
for (int i = 0; i < buffer.nioBufferCount(); i++) {
assertEquals(buffers[i], buf.internalNioBuffer(0, buf.readableBytes()));
assertEquals(buffers[i], buf.internalNioBuffer(buf.readerIndex(), buf.readableBytes()));
}
release(buffer);
buf.release();
@ -109,7 +109,7 @@ public class ChannelOutboundBufferTest {
assertEquals(65, buffer.nioBufferCount());
for (int i = 0; i < buffer.nioBufferCount(); i++) {
if (i < 65) {
assertEquals(buffers[i], buf.internalNioBuffer(0, buf.readableBytes()));
assertEquals(buffers[i], buf.internalNioBuffer(buf.readerIndex(), buf.readableBytes()));
} else {
assertNull(buffers[i]);
}