Examples of io.netty.util.internal.RecyclableArrayList

io.netty.util.internal.RecyclableArrayList
A simple list which is reyclable. This implementation does not allow {@code null} elements to be added.

    protected void handlerRemoved0(ChannelHandlerContext ctx) throws Exception { }


    @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 {
                    if (cumulation.writerIndex() > cumulation.maxCapacity() - data.readableBytes()
                            || cumulation.refCnt() > 1) {
                        // Expand cumulation (by replace it) when either there is not more room in the buffer
                        // or if the refCnt is greater then 1 which may happen when the user use slice().retain() or
                        // duplicate().retain().
                        //
                        // See:
                        // - https://github.com/netty/netty/issues/2327
                        // - https://github.com/netty/netty/issues/1764
                        expandCumulation(ctx, data.readableBytes());
                    }
                    cumulation.writeBytes(data);
                    data.release();
                }
                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();
                decodeWasNull = size == 0;


                for (int i = 0; i < size; i ++) {
                    ctx.fireChannelRead(out.get(i));
                }
                out.recycle();
            }
        } else {
            ctx.fireChannelRead(msg);
        }
    }

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        ctx.fireChannelReadComplete();
    }


    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            if (cumulation != null) {
                callDecode(ctx, cumulation, out);
                decodeLast(ctx, cumulation, out);
            } else {
                decodeLast(ctx, Unpooled.EMPTY_BUFFER, out);
            }
        } catch (DecoderException e) {
            throw e;
        } catch (Exception e) {
            throw new DecoderException(e);
        } finally {
            try {
                if (cumulation != null) {
                    cumulation.release();
                    cumulation = null;
                }
                int size = out.size();
                for (int i = 0; i < size; i++) {
                    ctx.fireChannelRead(out.get(i));
                }
                if (size > 0) {
                    // Something was read, call fireChannelReadComplete()
                    ctx.fireChannelReadComplete();
                }
                ctx.fireChannelInactive();
            } finally {
                // recycle in all cases
                out.recycle();
            }
        }
    }

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        return oldState;
    }


    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            replayable.terminate();
            callDecode(ctx, internalBuffer(), out);
            decodeLast(ctx, replayable, out);
        } catch (Signal replay) {
            // Ignore
            replay.expect(REPLAY);
        } catch (DecoderException e) {
            throw e;
        } catch (Exception e) {
            throw new DecoderException(e);
        } finally {
            try {
                if (cumulation != null) {
                    cumulation.release();
                    cumulation = null;
                }
                int size = out.size();
                for (int i = 0; i < size; i++) {
                    ctx.fireChannelRead(out.get(i));
                }
                if (size > 0) {
                    // Something was read, call fireChannelReadComplete()
                    ctx.fireChannelReadComplete();
                }
                ctx.fireChannelInactive();
            } finally {
                // recycle in all cases
                out.recycle();
            }
        }
    }

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        ensureOpen();
        if (msgs.length == 0) {
            return !outboundMessages.isEmpty();
        }


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


            flush();


            int size = futures.size();
            for (int i = 0; i < size; i++) {
                ChannelFuture future = (ChannelFuture) futures.get(i);
                assert future.isDone();
                if (future.cause() != null) {
                    recordException(future.cause());
                }
            }


            runPendingTasks();
            checkException();
            return !outboundMessages.isEmpty();
        } finally {
            futures.recycle();
        }
    }

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        ensureOpen();
        if (msgs.length == 0) {
            return !outboundMessages.isEmpty();
        }


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


            flush();


            int size = futures.size();
            for (int i = 0; i < size; i++) {
                ChannelFuture future = (ChannelFuture) futures.get(i);
                assert future.isDone();
                if (future.cause() != null) {
                    recordException(future.cause());
                }
            }


            runPendingTasks();
            checkException();
            return !outboundMessages.isEmpty();
        } finally {
            futures.recycle();
        }
    }

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        return matcher.match(msg);
    }


    @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();
            }
        }
    }

View Full Code Here

    protected void handlerRemoved0(ChannelHandlerContext ctx) throws Exception { }


    @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 {
                    if (cumulation.writerIndex() > cumulation.maxCapacity() - data.readableBytes()
                            || cumulation.refCnt() > 1) {
                        // Expand cumulation (by replace it) when either there is not more room in the buffer
                        // or if the refCnt is greater then 1 which may happen when the user use slice().retain() or
                        // duplicate().retain().
                        //
                        // See:
                        // - https://github.com/netty/netty/issues/2327
                        // - https://github.com/netty/netty/issues/1764
                        expandCumulation(ctx, data.readableBytes());
                    }
                    cumulation.writeBytes(data);
                    data.release();
                }
                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();
                decodeWasNull = size == 0;


                for (int i = 0; i < size; i ++) {
                    ctx.fireChannelRead(out.get(i));
                }
                out.recycle();
            }
        } else {
            ctx.fireChannelRead(msg);
        }
    }

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        ctx.fireChannelReadComplete();
    }


    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            if (cumulation != null) {
                callDecode(ctx, cumulation, out);
                decodeLast(ctx, cumulation, out);
            } else {
                decodeLast(ctx, Unpooled.EMPTY_BUFFER, out);
            }
        } catch (DecoderException e) {
            throw e;
        } catch (Exception e) {
            throw new DecoderException(e);
        } finally {
            try {
                if (cumulation != null) {
                    cumulation.release();
                    cumulation = null;
                }
                int size = out.size();
                for (int i = 0; i < size; i++) {
                    ctx.fireChannelRead(out.get(i));
                }
                if (size > 0) {
                    // Something was read, call fireChannelReadComplete()
                    ctx.fireChannelReadComplete();
                }
                ctx.fireChannelInactive();
            } finally {
                // recycle in all cases
                out.recycle();
            }
        }
    }

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        return matcher.match(msg);
    }


    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        RecyclableArrayList out = RecyclableArrayList.newInstance();
        try {
            if (acceptInboundMessage(msg)) {
                @SuppressWarnings("unchecked")
                I cast = (I) msg;
                try {
                    decode(ctx, cast, out);
                } finally {
                    ReferenceCountUtil.release(cast);
                }
            } else {
                out.add(msg);
            }
        } catch (DecoderException e) {
            throw e;
        } catch (Exception e) {
            throw new DecoderException(e);
        } finally {
            int size = out.size();
            for (int i = 0; i < size; i ++) {
                ctx.fireChannelRead(out.get(i));
            }
            out.recycle();
        }
    }

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    @Param({ "00000", "00256", "01024", "04096", "16384", "65536" })
    public int size;


    @Benchmark
    public void recycleSameThread() {
        RecyclableArrayList list = RecyclableArrayList.newInstance(size);
        list.recycle();
    }

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io.netty.channel.embedded.EmbeddedChannel

io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.MessageToMessageDecoder

io.netty.handler.codec.MessageToMessageEncoder

io.netty.handler.codec.ReplayingDecoder

io.netty.microbench.internal.RecyclableArrayListBenchmark

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