private void applyDefaultHeader(
final UnsafeBuffer buffer,
final int termOffset,
final int frameLength,
final long defaultVersionFlagsType,
final long defaultSessionId) {
long lengthVersionFlagsType;
long termOffsetAndSessionId;
if (ByteOrder.nativeOrder() == LITTLE_ENDIAN) {
lengthVersionFlagsType = defaultVersionFlagsType | ((-frameLength) & 0xFFFF_FFFFL);
termOffsetAndSessionId = defaultSessionId | termOffset;
} else {
lengthVersionFlagsType =
(((reverseBytes(-frameLength)) & 0xFFFF_FFFFL) << 32) | defaultVersionFlagsType;
termOffsetAndSessionId =
(((reverseBytes(termOffset)) & 0xFFFF_FFFFL) << 32) | defaultSessionId;
}
buffer.putLongOrdered(termOffset + FRAME_LENGTH_FIELD_OFFSET, lengthVersionFlagsType);
UnsafeAccess.UNSAFE.storeFence();
buffer.putLong(termOffset + TERM_OFFSET_FIELD_OFFSET, termOffsetAndSessionId);
// read the stream(int) and term(int), this is the mutable part of the default header
final long streamAndTermIds = defaultHeader.getLong(STREAM_ID_FIELD_OFFSET);
buffer.putLong(termOffset + STREAM_ID_FIELD_OFFSET, streamAndTermIds);
}
/** {@inheritDoc} */
public boolean write(
final int msgTypeId, final DirectBuffer srcBuffer, final int srcIndex, final int length) {
checkTypeId(msgTypeId);
checkMsgLength(length);
boolean isSuccessful = false;
final AtomicBuffer buffer = this.buffer;
final int recordLength = length + HEADER_LENGTH;
final int requiredCapacity = align(recordLength, ALIGNMENT);
final int recordIndex = claimCapacity(buffer, requiredCapacity);
if (INSUFFICIENT_CAPACITY != recordIndex) {
buffer.putLongOrdered(recordIndex, makeHeader(-recordLength, msgTypeId));
UnsafeAccess.UNSAFE.storeFence();
buffer.putBytes(encodedMsgOffset(recordIndex), srcBuffer, srcIndex, length);
buffer.putIntOrdered(lengthOffset(recordIndex), recordLength);
isSuccessful = true;
}
return isSuccessful;
}
