Examples of jnr.ffi.Pointer.slice()

jnr.ffi.Pointer.slice()
Creates a new {@code Pointer} representing a sub-region of the memoryreferred to by this {@code Pointer}. @param offset the offset from the start of the memory this {@code Pointer}represents at which the new {@code Pointer} will start. @return a {@code Pointer} instance representing the new sub-region.

        Pointer ptr = posix.getRuntime().getMemoryManager().allocateDirect(totalSize);


        int offset = 0;
        for (int i = 0; i < dataLengths.length; ++i) {
            int eachLen = posix.socketMacros().CMSG_SPACE(dataLengths[i]);
            CmsgHdr each = allocateCmsgHdrInternal(posix, ptr.slice(offset, eachLen), eachLen);
            cmsgs[i] = each;
            offset += eachLen;
        }


        setControlPointer(ptr);

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        int offset = 0;


        Pointer controlPtr = getControlPointer();


        while (offset < len) {
            CmsgHdr each = allocateCmsgHdrInternal(posix, controlPtr.slice(offset), -1);
            offset += each.getLen();
            control.add(each);
        }


        return control.toArray(new CmsgHdr[control.size()]);

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