Testing some singleton implementations
Stanislav Blinov
stanislav.blinov at gmail.com
Fri Feb 7 04:31:32 PST 2014
On Friday, 7 February 2014 at 11:31:14 UTC, Stanislav Blinov
wrote:
> On Friday, 7 February 2014 at 10:25:52 UTC, TC wrote:
>
>> Should't be the LockSingleton implemented like this instead?
>>
>> class LockSingleton
>> {
>> static auto get()
>> {
>> if (_instance is null)
>
> (_instance is null) will most likely not be an atomic
> operation. References are two words. Imagine that one thread
> writes half a reference inside synchronized {}, then goes to
> sleep. What would the thread that gets to that 'if' return? I'd
> say it'll return "ouch".
Scratch that.
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