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Tony:<BR><BR>> Also, I am unconvinced that the current implementation of AssignSlot can ever<BR>> be correct without the critical section. It requires atomic update of both<BR>> the slots array pointer (with the new slots) *and* the array elements. This<BR>> requires a proper CS instead of non-blocking synchronization.<BR><BR>
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I don't see it.<BR>
I could be wrong.<BR>
<BR>
The writes are done within a critical section, to avoid racing with other writers.<BR>
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Writes interact with readers in that:<BR>
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SUBARRAY (new_slots^, 0, n) := slots^;<BR>finish writing to the array elements<BR>
MemoryBarrier<BR>
slots := new_slots;<BR><BR>
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so readers don't see slots unless it has been fully initialized.<BR>
<BR>
AssignSlots should also be able to be lock free via InterlockedCompareExchangePointer.<BR>
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- Jay<BR>
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