Package org.voltcore.utils.DBBPool

Examples of org.voltcore.utils.DBBPool.BBContainer.b()

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        try {
            BBContainer chunkC;
            ByteBuffer chunk;
            try {
                chunkC = tupleData.call();
                chunk = chunkC.b();
            } catch (Exception e) {
                return Futures.immediateFailedFuture(e);
            }

            // cleanup and exit immediately if in failure mode
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                m_writeBuffer.b().flip();
                m_readBuffers.add(m_writeBuffer);
                firstC = m_writeBuffer;
                m_writeBuffer = null;
            }
            ByteBuffer first = firstC.b();
            assert first.remaining() > 0;

            // Copy bytes from first into output
            int bytesRemaining = first.remaining();
            int bytesToCopy = output.length - bytesCopied;
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            processedWrites++;
            final int serializedSize = ds.getSerializedSize();
            if (serializedSize == DeferredSerialization.EMPTY_MESSAGE_LENGTH) continue;
            BBContainer outCont = m_queuedBuffers.peekLast();
            ByteBuffer outbuf = null;
            if (outCont == null || !outCont.b().hasRemaining()) {
                outCont = pool.acquire();
                outCont.b().clear();
                m_queuedBuffers.offer(outCont);
            }
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            if (serializedSize == DeferredSerialization.EMPTY_MESSAGE_LENGTH) continue;
            BBContainer outCont = m_queuedBuffers.peekLast();
            ByteBuffer outbuf = null;
            if (outCont == null || !outCont.b().hasRemaining()) {
                outCont = pool.acquire();
                outCont.b().clear();
                m_queuedBuffers.offer(outCont);
            }

            outbuf = outCont.b();
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                outCont = pool.acquire();
                outCont.b().clear();
                m_queuedBuffers.offer(outCont);
            }

            outbuf = outCont.b();

            //Fastpath, serialize to direct buffer creating no garbage
            if (outbuf.remaining() >= serializedSize) {
                final int oldLimit = outbuf.limit();
                outbuf.limit(outbuf.position() + serializedSize);
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                buf.position(0);
                bytesQueued += buf.remaining();
                while (buf.hasRemaining()) {
                    if (!outbuf.hasRemaining()) {
                        outCont = pool.acquire();
                        outbuf = outCont.b();
                        outbuf.clear();
                        m_queuedBuffers.offer(outCont);
                    }
                    if (outbuf.remaining() >= buf.remaining()) {
                        outbuf.put(buf);
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            bytesReleased += m_currentWriteBuffer.b().remaining();
            m_currentWriteBuffer.discard();
        }
        while ((c = m_queuedBuffers.poll()) != null) {
            //Buffer is not flipped after being written to in swap and serialize, need to do it here
            c.b().flip();
            bytesReleased += c.b().remaining();
            c.discard();
        }
        updateQueued(-bytesReleased, false);
    }
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            m_currentWriteBuffer.discard();
        }
        while ((c = m_queuedBuffers.poll()) != null) {
            //Buffer is not flipped after being written to in swap and serialize, need to do it here
            c.b().flip();
            bytesReleased += c.b().remaining();
            c.discard();
        }
        updateQueued(-bytesReleased, false);
    }
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    }
    BBContainer acquire() {
       final BBContainer cont = m_buffers.poll();
       if (cont == null) {
           final BBContainer originContainer = DBBPool.allocateDirect(1024 * 32);
           return new BBContainer(originContainer.b()) {
                @Override
                public void discard() {
                    checkDoubleFree();
                    //If we had to allocate over the desired limit, start discarding
                    if (m_buffers.size() > m_numBuffers) {
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            r.nextBytes(bytes);
            PureJavaCrc32C checksum = new PureJavaCrc32C();
            checksum.update(bytes);
            int javaSum = (int)checksum.getValue();
            BBContainer cont = DBBPool.allocateDirect(nextLength);
            cont.b().put(bytes);
            int cSum = DBBPool.getCRC32C(cont.address(), 0, nextLength);
            cont.discard();
            assertEquals(javaSum, cSum);
        }
    }
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