Java Code Examples for io.netty.util.internal.RecyclableArrayList#newInstance()

The following examples show how to use io.netty.util.internal.RecyclableArrayList#newInstance() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: UdpChannel.java    From UdpServerSocketChannel with GNU Lesser General Public License v3.0 6 votes vote down vote up
@Override
protected void doWrite(ChannelOutboundBuffer buffer) throws Exception {
	final RecyclableArrayList list = RecyclableArrayList.newInstance();
	boolean freeList = true;
	try {
		ByteBuf buf = null;
		while ((buf = (ByteBuf) buffer.current()) != null) {
			list.add(buf.retain());
			buffer.remove();
		}
		freeList = false;
	} finally {
		if (freeList) {
			for (Object obj : list) {
				ReferenceCountUtil.safeRelease(obj);
			}
			list.recycle();
		}
	}
	serverChannel.doWrite(list, remote);
}
 
Example 2
Source File: EmbeddedChannel.java    From netty-4.1.22 with Apache License 2.0 5 votes vote down vote up
/**
 * Write messages to the outbound of this {@link Channel}.将消息写入该通道的出站。
 *
 * @param msgs              the messages to be written
 * @return bufferReadable   returns {@code true} if the write operation did add something to the outbound buffer
 */
public boolean writeOutbound(Object... msgs) {
    ensureOpen();
    if (msgs.length == 0) {
        return isNotEmpty(outboundMessages);
    }

    RecyclableArrayList futures = RecyclableArrayList.newInstance(msgs.length);
    try {
        for (Object m: msgs) {
            if (m == null) {
                break;
            }
            futures.add(write(m));
        }

        flushOutbound0();

        int size = futures.size();
        for (int i = 0; i < size; i++) {
            ChannelFuture future = (ChannelFuture) futures.get(i);
            if (future.isDone()) {
                recordException(future);
            } else {
                // The write may be delayed to run later by runPendingTasks()
                future.addListener(recordExceptionListener);
            }
        }

        checkException();
        return isNotEmpty(outboundMessages);
    } finally {
        futures.recycle();
    }
}
 
Example 3
Source File: FixedCompositeByteBuf.java    From netty-4.1.22 with Apache License 2.0 5 votes vote down vote up
@Override
public ByteBuffer[] nioBuffers(int index, int length) {
    checkIndex(index, length);
    if (length == 0) {
        return EmptyArrays.EMPTY_BYTE_BUFFERS;
    }

    RecyclableArrayList array = RecyclableArrayList.newInstance(buffers.length);
    try {
        Component c = findComponent(index);
        int i = c.index;
        int adjustment = c.offset;
        ByteBuf s = c.buf;
        for (;;) {
            int localLength = Math.min(length, s.readableBytes() - (index - adjustment));
            switch (s.nioBufferCount()) {
                case 0:
                    throw new UnsupportedOperationException();
                case 1:
                    array.add(s.nioBuffer(index - adjustment, localLength));
                    break;
                default:
                    Collections.addAll(array, s.nioBuffers(index - adjustment, localLength));
            }

            index += localLength;
            length -= localLength;
            adjustment += s.readableBytes();
            if (length <= 0) {
                break;
            }
            s = buffer(++i);
        }

        return array.toArray(new ByteBuffer[array.size()]);
    } finally {
        array.recycle();
    }
}
 
Example 4
Source File: ByteToMessageDecoder.java    From netty4.0.27Learn with Apache License 2.0 5 votes vote down vote up
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof ByteBuf) {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            ByteBuf data = (ByteBuf) msg;
            first = cumulation == null;
            if (first) {
                cumulation = data;
            } else {
                cumulation = cumulator.cumulate(ctx.alloc(), cumulation, data);
            }
            callDecode(ctx, cumulation, out);
        } catch (DecoderException e) {
            throw e;
        } catch (Throwable t) {
            throw new DecoderException(t);
        } finally {
            if (cumulation != null && !cumulation.isReadable()) {
                cumulation.release();
                cumulation = null;
            }
            int size = out.size();

            for (int i = 0; i < size; i ++) {
                ctx.fireChannelRead(out.get(i));
            }
            out.recycle();
        }
    } else {
        ctx.fireChannelRead(msg);
    }
}
 
Example 5
Source File: RecyclableArrayListBenchmark.java    From netty-4.1.22 with Apache License 2.0 4 votes vote down vote up
@Benchmark
public void recycleSameThread() {
    RecyclableArrayList list = RecyclableArrayList.newInstance(size);
    list.recycle();
}
 
Example 6
Source File: CodecOutputListBenchmark.java    From netty-4.1.22 with Apache License 2.0 4 votes vote down vote up
@Setup(Level.Invocation)
public void setup() {
    codecOutputList = CodecOutputList.newInstance();
    recycleableArrayList = RecyclableArrayList.newInstance(16);
    arrayList = new ArrayList<Object>(16);
}
 
Example 7
Source File: RecyclableUtil.java    From spring-boot-protocol with Apache License 2.0 4 votes vote down vote up
public static <T>List<T> newRecyclableList(int minCapacity){
    RecyclableArrayList finishListeners = RecyclableArrayList.newInstance(minCapacity);
    return (List<T>) finishListeners;
}
 
Example 8
Source File: AbstractBatchDecoder.java    From sofa-bolt with Apache License 2.0 4 votes vote down vote up
/**
 * This method has been modified to check the size of decoded msgs, which is represented by the
 * local variable {@code RecyclableArrayList out}. If has decoded more than one msg,
 * then construct an array list to submit all decoded msgs to the pipeline.
 *
 * @param ctx channel handler context
 * @param msg data
 */
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof ByteBuf) {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            ByteBuf data = (ByteBuf) msg;
            first = cumulation == null;
            if (first) {
                cumulation = data;
            } else {
                cumulation = cumulator.cumulate(ctx.alloc(), cumulation, data);
            }
            callDecode(ctx, cumulation, out);
        } catch (DecoderException e) {
            throw e;
        } catch (Throwable t) {
            throw new DecoderException(t);
        } finally {
            if (cumulation != null && !cumulation.isReadable()) {
                numReads = 0;
                cumulation.release();
                cumulation = null;
            } else if (++numReads >= discardAfterReads) {
                // We did enough reads already try to discard some bytes so we not risk to see a OOME.
                // See https://github.com/netty/netty/issues/4275
                numReads = 0;
                discardSomeReadBytes();
            }

            int size = out.size();
            if (size == 0) {
                decodeWasNull = true;
            } else if (size == 1) {
                ctx.fireChannelRead(out.get(0));
            } else {
                ArrayList<Object> ret = new ArrayList<Object>(size);
                for (int i = 0; i < size; i++) {
                    ret.add(out.get(i));
                }
                ctx.fireChannelRead(ret);
            }

            out.recycle();
        }
    } else {
        ctx.fireChannelRead(msg);
    }
}
 
Example 9
Source File: RecyclableArrayListBenchmark.java    From netty4.0.27Learn with Apache License 2.0 4 votes vote down vote up
@Benchmark
public void recycleSameThread() {
    RecyclableArrayList list = RecyclableArrayList.newInstance(size);
    list.recycle();
}
 
Example 10
Source File: MessageToMessageEncoder.java    From netty4.0.27Learn with Apache License 2.0 4 votes vote down vote up
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
    RecyclableArrayList out = null;
    try {
        if (acceptOutboundMessage(msg)) {
            out = RecyclableArrayList.newInstance();
            @SuppressWarnings("unchecked")
            I cast = (I) msg;
            try {
                encode(ctx, cast, out);
            } finally {
                ReferenceCountUtil.release(cast);
            }

            if (out.isEmpty()) {
                out.recycle();
                out = null;

                throw new EncoderException(
                        StringUtil.simpleClassName(this) + " must produce at least one message.");
            }
        } else {
            ctx.write(msg, promise);
        }
    } catch (EncoderException e) {
        throw e;
    } catch (Throwable t) {
        throw new EncoderException(t);
    } finally {
        if (out != null) {
            final int sizeMinusOne = out.size() - 1;
            if (sizeMinusOne == 0) {
                ctx.write(out.get(0), promise);
            } else if (sizeMinusOne > 0) {
                // Check if we can use a voidPromise for our extra writes to reduce GC-Pressure
                // See https://github.com/netty/netty/issues/2525
                ChannelPromise voidPromise = ctx.voidPromise();
                boolean isVoidPromise = promise == voidPromise;
                for (int i = 0; i < sizeMinusOne; i ++) {
                    ChannelPromise p;
                    if (isVoidPromise) {
                        p = voidPromise;
                    } else {
                        p = ctx.newPromise();
                    }
                    ctx.write(out.get(i), p);
                }
                ctx.write(out.get(sizeMinusOne), promise);
            }
            out.recycle();
        }
    }
}
 
Example 11
Source File: MessageToMessageEncoder.java    From ProtocolSupport with GNU Affero General Public License v3.0 4 votes vote down vote up
@Override
@SuppressWarnings("unchecked")
public void write(final ChannelHandlerContext channelHandlerContext, final Object o, final ChannelPromise channelPromise) {
	RecyclableArrayList instance = null;
	try {
		if (this.acceptOutboundMessage(o)) {
			instance = RecyclableArrayList.newInstance();
			try {
				this.encode(channelHandlerContext, (I) o, (List<Object>) instance);
			} finally {
				ReferenceCountUtil.release(o);
			}
			if (instance.isEmpty()) {
				instance.recycle();
				instance = null;
				channelPromise.setSuccess();
			}
		} else {
			channelHandlerContext.write(o, channelPromise);
		}
	} catch (EncoderException ex) {
		throw ex;
	} catch (Throwable t) {
		throw new EncoderException(t);
	} finally {
		if (instance != null) {
			final int n = instance.size() - 1;
			if (n == 0) {
				channelHandlerContext.write(instance.get(0), channelPromise);
			} else if (n > 0) {
				ChannelPromise voidPromise = channelHandlerContext.voidPromise();
				boolean b = channelPromise == voidPromise;
				for (int i = 0; i < n; ++i) {
					ChannelPromise promise;
					if (b) {
						promise = voidPromise;
					} else {
						promise = channelHandlerContext.newPromise();
					}
					channelHandlerContext.write(instance.get(i), promise);
				}
				channelHandlerContext.write(instance.get(n), channelPromise);
			}
			instance.recycle();
		}
	}
}