Java Code Examples for net.openhft.chronicle.core.OS#pageAlign()

The following examples show how to use net.openhft.chronicle.core.OS#pageAlign() . 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: RollEOFTest.java    From Chronicle-Queue with Apache License 2.0 6 votes vote down vote up 
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(test);
    try {
        final Wire wire = WireType.BINARY_LIGHT.apply(mappedBytes);
        final Bytes<?> bytes = wire.bytes();
        bytes.readLimitToCapacity();
        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(test);
    }
}
Example 2
Source File: VanillaChronicleHash.java    From Chronicle-Map with Apache License 2.0 5 votes vote down vote up 
private void msync(long address, long length) throws IOException {
    // address should be a multiple of page size
    if (OS.pageAlign(address) != address) {
        long oldAddress = address;
        address = OS.pageAlign(address) - OS.pageSize();
        length += oldAddress - address;
    }
    if (OS.isWindows()) {
        WindowsMsync.msync(raf, address, length);
    } else {
        PosixMsync.msync(address, length);
    }
}
Example 3
Source File: SingleChronicleQueue.java    From Chronicle-Queue with Apache License 2.0 5 votes vote down vote up 
@NotNull
@PackageLocal
MappedFile mappedFile(File file) throws FileNotFoundException {
    long chunkSize = OS.pageAlign(blockSize);
    long overlapSize = OS.pageAlign(blockSize / 4);
    return MappedFile.of(file, chunkSize, overlapSize, readOnly);
}