/// <summary>
/// Pre touch memory pages so they are faulted in to be available before access.
/// </summary>
public void PreTouch()
{
const int value = 0;
int pageSize = LogBufferDescriptor.PageSize(_logMetaDataBuffer);
UnsafeBuffer atomicBuffer = new UnsafeBuffer();
foreach (MappedByteBuffer buffer in _mappedByteBuffers)
{
atomicBuffer.Wrap(buffer.Pointer, 0, (int)buffer.Capacity);
for (int i = 0, length = atomicBuffer.Capacity; i < length; i += pageSize)
{
atomicBuffer.CompareAndSetInt(i, value, value);
}
}
}
/// <summary>
/// Compare and set the value of the current active term count.
/// </summary>
/// <param name="metaDataBuffer"> containing the metadata. </param>
/// <param name="expectedTermCount"> value of the active term count expected in the log </param>
/// <param name="updateTermCount"> value of the active term count to be updated in the log </param>
/// <returns> true if successful otherwise false. </returns>
public static bool CasActiveTermCount(UnsafeBuffer metaDataBuffer, int expectedTermCount, int updateTermCount)
{
return(metaDataBuffer.CompareAndSetInt(LOG_ACTIVE_TERM_COUNT_OFFSET, expectedTermCount, updateTermCount));
}
