c# - Replacing volatile with personal lock or Interlocked? -

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curiosity killed cat, cannot resist... asking :-).

there lot of advices floating around avoid volatile. wonder correct/sane replacement -- personal lock, i.e. have variable x wrap in setter/getter lock created it:

private volatile bool x; // // replacement private readonly object x_lock = new object(); private bool __x; private bool x {     { lock (x_lock) return __x; } ...

or better use interlocked methods (for reading using no-op compareexchange):

private bool x {     { return interlocked.compareexchange(ref __x,false,false); }     ...

i use bool type avoid discussion problems of compound operations, classic increment of int when have read , write value in 1 atomic step. volatile not such cases in first place, off-topic here.

update: quote eric lippert blog "volatile fields sign doing downright crazy: you’re attempting read , write same value on 2 different threads without putting lock in place". started thinking (up don't see crazy flags). absence of evidence not evidence of absence...


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