Examples with Wire net.openhft.chronicle.wire.Wire used on opensource projects

Example 11 with Wire

use of net.openhft.chronicle.wire.Wire in project Chronicle-Queue by OpenHFT.

the class RollEOFTest method removeEOF.

private void removeEOF(Path path) throws IOException {
    long blockSize = 64 << 10;
    long chunkSize = OS.pageAlign(blockSize);
    long overlapSize = OS.pageAlign(blockSize / 4);
    final MappedBytes mappedBytes = MappedBytes.mappedBytes(path.toFile(), chunkSize, overlapSize, false);
    mappedBytes.reserve();
    try {
        final Wire wire = WireType.BINARY_LIGHT.apply(mappedBytes);
        final Bytes<?> bytes = wire.bytes();
        bytes.readLimit(bytes.capacity());
        bytes.readSkip(4);
        // move past header
        try (final SingleChronicleQueueStore qs = loadStore(wire)) {
            assertNotNull(qs);
            long l = qs.writePosition();
            long len = Wires.lengthOf(bytes.readVolatileInt(l));
            long eofOffset = l + len + 4L;
            bytes.writePosition(eofOffset);
            bytes.writeInt(0);
        }
    } finally {
        mappedBytes.release();
    }
}

Example 12 with Wire

use of net.openhft.chronicle.wire.Wire in project Chronicle-Queue by OpenHFT.

the class SingleChronicleQueue method newIndex.

/**
 * Creates a new Excerpt containing and index which will be 1L << 17L bytes long, This method is used for creating
 * both the primary and secondary indexes. Chronicle Queue uses a root primary index ( each entry in the primary
 * index points to a unique a secondary index. The secondary index only records the addressForRead of every 64th except,
 * the except are linearly scanned from there on.
 *
 * @return the addressForRead of the Excerpt containing the usable index, just after the header
 */
long newIndex() {
    final ByteableLongArrayValues array = longArray.get();
    final long size = array.sizeInBytes(NUMBER_OF_ENTRIES_IN_EACH_INDEX);
    final Bytes buffer = NativeBytes.nativeBytes(size);
    buffer.zeroOut(0, size);
    final Wire wire = WireUtil.createWire(this.builder.wireType(), buffer);
    wire.write(() -> "index").int64array(NUMBER_OF_ENTRIES_IN_EACH_INDEX);
    buffer.flip();
    return appendMetaDataReturnAddress(buffer);
}