Concurrent Max
Concurrent Max
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Can you think of a better way to implement this code?
private volatile Guid lastEtag;
private readonly object lastEtagLocker = new object();
internal void UpdateLastWrittenEtag(Guid? etag)
{
if (etag == null)
return;
var newEtag = etag.Value.ToByteArray();
// not the most recent etag
if (Buffers.Compare(lastEtag.ToByteArray(), newEtag) <= 0)
{
return;
}
lock (lastEtagLocker)
{
// not the most recent etag
if (Buffers.Compare(lastEtag.ToByteArray(), newEtag) <= 0)
{
return;
}
lastEtag = etag.Value;
}
}
We have multiple threads calling this function, and we need to ensure that lastEtag value is always the maximum value. This has the potential to be called often, so I want to make sure that I chose the best way to do this. Ideas?
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