Examples with Bytes net.openhft.chronicle.bytes.Bytes used on opensource projects

Example 36 with Bytes

use of net.openhft.chronicle.bytes.Bytes in project Chronicle-Queue by OpenHFT.

the class ThreadedQueueTest method testMultipleThreads.

@Test(timeout = 10000)
public void testMultipleThreads() throws InterruptedException, ExecutionException, TimeoutException {
    final File path = getTmpDir();
    final AtomicInteger counter = new AtomicInteger();
    ExecutorService tailerES = Executors.newSingleThreadExecutor(new NamedThreadFactory("tailer"));
    Future tf = tailerES.submit(() -> {
        try (final ChronicleQueue rqueue = ChronicleQueue.singleBuilder(path).testBlockSize().build()) {
            final ExcerptTailer tailer = rqueue.createTailer();
            final Bytes bytes = Bytes.elasticByteBuffer();
            while (counter.get() < REQUIRED_COUNT && !Thread.interrupted()) {
                bytes.clear();
                if (tailer.readBytes(bytes))
                    counter.incrementAndGet();
            }
            bytes.releaseLast();
        } catch (Throwable t) {
            t.printStackTrace();
        }
    });
    ExecutorService appenderES = Executors.newSingleThreadExecutor(new NamedThreadFactory("appender"));
    Future af = appenderES.submit(() -> {
        try (final ChronicleQueue wqueue = ChronicleQueue.singleBuilder(path).testBlockSize().build()) {
            final ExcerptAppender appender = wqueue.acquireAppender();
            final Bytes message = Bytes.elasticByteBuffer();
            for (int i = 0; i < REQUIRED_COUNT; i++) {
                message.clear();
                message.append(i);
                appender.writeBytes(message);
            }
            message.releaseLast();
        } catch (Throwable t) {
            t.printStackTrace();
        }
    });
    appenderES.shutdown();
    tailerES.shutdown();
    long end = System.currentTimeMillis() + 9000;
    af.get(9000, TimeUnit.MILLISECONDS);
    tf.get(end - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
    assertEquals(REQUIRED_COUNT, counter.get());
}

Example 37 with Bytes

use of net.openhft.chronicle.bytes.Bytes in project Chronicle-Queue by OpenHFT.

the class LatencyDistributionMain method runTest.

protected void runTest(@NotNull ChronicleQueue queue, @NotNull ChronicleQueue queue2) throws InterruptedException {
    Histogram histogramCo = new Histogram();
    Histogram histogramIn = new Histogram();
    Histogram histogramWr = new Histogram();
    Thread pretoucher = new Thread(() -> {
        ExcerptAppender appender = queue.acquireAppender();
        try {
            while (!Thread.currentThread().isInterrupted()) {
                appender.pretouch();
                Jvm.pause(50);
            }
        } catch (Exception e) {
            if (!appender.isClosed())
                e.printStackTrace();
        }
    });
    pretoucher.setDaemon(true);
    pretoucher.start();
    ExcerptAppender appender = queue.acquireAppender();
    // two queues as most like in a different process.
    ExcerptTailer tailer = queue2.createTailer();
    String name = getClass().getName();
    Thread tailerThread = new Thread(() -> {
        AffinityLock lock = null;
        try {
            if (Jvm.getBoolean("enableTailerAffinity") || !Jvm.getBoolean("disableAffinity")) {
                lock = Affinity.acquireLock();
            }
            int counter = 0;
            while (!Thread.currentThread().isInterrupted()) {
                try {
                    // if (SAMPLING)
                    // sampler.thread(Thread.currentThread());
                    // boolean found = tailer.readDocument(myReadMarshallable);
                    boolean found;
                    try (DocumentContext dc = tailer.readingDocument()) {
                        found = dc.isPresent();
                        if (found) {
                            int count = counter++;
                            if (count == WARMUP) {
                                histogramCo.reset();
                                histogramIn.reset();
                                histogramWr.reset();
                            }
                            Bytes<?> bytes = dc.wire().bytes();
                            long startCo = bytes.readLong();
                            long startIn = bytes.readLong();
                            long now = System.nanoTime();
                            histogramCo.sample(now - startCo);
                            histogramIn.sample(now - startIn);
                            if (count % INTLOG_INTERVAL == 0)
                                System.out.println("read  " + count);
                        }
                    }
                /*
                        if (SAMPLING) {
                            StackTraceElement[] stack = sampler.getAndReset();
                            if (stack != null) {
                                if (!stack[0].getClassName().equals(name) &&
                                        !stack[0].getClassName().equals("java.lang.Thread")) {
                                    StringBuilder sb = new StringBuilder();
                                    Jvm.trimStackTrace(sb, stack);
                                   // System.out.println(sb);
                                }
                            } else if (!found) {
                                Thread.yield();
                            }
                        }
                        */
                } catch (Exception e) {
                    break;
                }
            }
        } finally {
            if (lock != null) {
                lock.release();
            }
        }
    });
    Thread appenderThread = new Thread(() -> {
        AffinityLock lock = null;
        try {
            if (Jvm.getBoolean("enableAppenderAffinity") || !Jvm.getBoolean("disableAffinity")) {
                lock = Affinity.acquireLock();
            }
            long next = System.nanoTime();
            long interval = 1_000_000_000 / throughput;
            Map<String, Integer> stackCount = new LinkedHashMap<>();
            BytesStore<?, ?> bytes24 = BytesStore.nativeStoreFrom(new byte[Main.size - 16]);
            for (int i = -WARMUP; i < iterations; i++) {
                long s0 = System.nanoTime();
                if (s0 < next) {
                    do ; while (System.nanoTime() < next);
                    // if we failed to come out of the spin loop on time, reset next.
                    next = System.nanoTime();
                }
                if (SAMPLING) {
                    sampler.thread(Thread.currentThread());
                }
                long start = System.nanoTime();
                try (@NotNull DocumentContext dc = appender.writingDocument(false)) {
                    Wire wire = dc.wire();
                    Bytes<?> bytes2 = wire.bytes();
                    // when it should have started
                    bytes2.writeLong(next);
                    // when it actually started.
                    bytes2.writeLong(start);
                    bytes2.write(bytes24);
                    ThroughputMain.addToEndOfCache(wire);
                }
                long time = System.nanoTime() - start;
                histogramWr.sample(start - next);
                if (SAMPLING && time > 1e3 && i > 0) {
                    StackTraceElement[] stack = sampler.getAndReset();
                    if (stack != null) {
                        if (!stack[0].getClassName().equals(name) && !stack[0].getClassName().equals("java.lang.Thread")) {
                            StringBuilder sb = new StringBuilder();
                            Jvm.trimStackTrace(sb, stack);
                            stackCount.compute(sb.toString(), (k, v) -> v == null ? 1 : v + 1);
                        }
                    }
                }
                next += interval;
                if (i % INTLOG_INTERVAL == 0)
                    System.out.println("wrote " + i);
            }
            stackCount.entrySet().stream().filter(e -> e.getValue() > 1).forEach(System.out::println);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (lock != null) {
                lock.release();
            }
        }
    });
    tailerThread.start();
    appenderThread.start();
    appenderThread.join();
    pretoucher.interrupt();
    pretoucher.join();
    // Pause to allow tailer to catch up (if needed)
    Jvm.pause(500);
    tailerThread.interrupt();
    tailerThread.join();
    System.out.println("wr: " + histogramWr.toLongMicrosFormat());
    System.out.println("in: " + histogramIn.toLongMicrosFormat());
    System.out.println("co: " + histogramCo.toLongMicrosFormat());
}

Example 38 with Bytes

use of net.openhft.chronicle.bytes.Bytes in project Chronicle-Queue by OpenHFT.

the class BytesRingBufferTest method testPollWithNoData.

@Test
public void testPollWithNoData() {
    try (NativeBytesStore<Void> nativeStore = NativeBytesStore.nativeStoreWithFixedCapacity(150)) {
        assert nativeStore.isNative();
        final BytesRingBuffer bytesRingBuffer = new BytesRingBuffer(nativeStore.bytes());
        Bytes actual = bytesRingBuffer.poll(maxSize -> input.clear());
        assertEquals(null, actual);
    }
}

Example 39 with Bytes

use of net.openhft.chronicle.bytes.Bytes in project Chronicle-Queue by OpenHFT.

the class BytesRingBufferTest method testFlowAroundSingleThreadedWriteDifferentSizeBuffers.

@Test
public void testFlowAroundSingleThreadedWriteDifferentSizeBuffers() {
    try (NativeBytesStore<Void> nativeStore = NativeBytesStore.nativeStoreWithFixedCapacity(150)) {
        // System.out.println(nativeStore.limit());
        assert !nativeStore.isElastic();
        Bytes<Void> bytes = nativeStore.bytes();
        for (int j = 23 + 34; j < 100; j++) {
            final BytesRingBuffer bytesRingBuffer = new BytesRingBuffer(nativeStore.bytes());
            for (int i = 0; i < 50; i++) {
                bytesRingBuffer.offer(data());
                String actual = bytesRingBuffer.take(maxSize -> input.clear()).readUTFΔ();
                assertEquals(EXPECTED, actual);
            }
        }
    }
}

Example 40 with Bytes

use of net.openhft.chronicle.bytes.Bytes in project Chronicle-Queue by OpenHFT.

the class BytesRingBufferTest method testWriteAndRead.

@Test
public void testWriteAndRead() {
    try (NativeBytesStore<Void> nativeStore = NativeBytesStore.nativeStoreWithFixedCapacity(150)) {
        assert nativeStore.isNative();
        final BytesRingBuffer bytesRingBuffer = new BytesRingBuffer(nativeStore.bytes());
        data();
        bytesRingBuffer.offer(data());
        Bytes actual = bytesRingBuffer.take(maxSize -> input.clear());
        assertEquals(EXPECTED, actual.readUTFΔ());
    }
}