Re: Thread-safety guarantees for basic ops

<"Günter Prossliner" <g.prossliner/gmx/at>> wrote:
When thinking about thread-safety I've been assuming that the
following are automatically thread-safe without the need for any
explicit locking by the programmer:

- Reading a reference value

This depends on the size of the Reference. Reading Word-Sizes (Int32 on x32)
are thread-safe, but above not (Int64 on x32). Obviously for 64 bit
Platforms, reading Int64 is also threadsafe.

That depends on what you mean by "thread-safe". They're atomic, but
unless you take *some* sort of action, there'll be no guarantee you get
the latest value.

Personally, I don't count "I'll read a value which was definitely valid
at some point, but might be an hour out of date" as thread-safe :)

--
Jon Skeet - <skeet@xxxxxxxxx>
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