/// <summary>
/// Try to enqueue entry to log (in memory). If it returns true, we are
/// done. If it returns false, we need to retry.
/// </summary>
/// <param name="entry">Entry to be enqueued to log</param>
/// <param name="logicalAddress">Logical address of added entry</param>
/// <returns>Whether the append succeeded</returns>
public unsafe bool TryEnqueue(byte[] entry, out long logicalAddress)
{
logicalAddress = 0;
epoch.Resume();
var length = entry.Length;
logicalAddress = allocator.TryAllocate(headerSize + Align(length));
if (logicalAddress == 0)
{
epoch.Suspend();
return(false);
}
var physicalAddress = allocator.GetPhysicalAddress(logicalAddress);
fixed(byte *bp = entry)
Buffer.MemoryCopy(bp, (void *)(headerSize + physicalAddress), length, length);
SetHeader(length, (byte *)physicalAddress);
epoch.Suspend();
return(true);
}
