Testing some singleton implementations

[Andrej Mitrovic]

On 1/31/14, Stanislav Blinov <stanislav.blinov at gmail.com> wrote:
> I've reworked the unittest a little, to accomodate for multiple
> runs:
>
> http://codepad.org/ghZdjvUE

I've finally managed to build LDC2 on Windows (MinGW version), here
are the timings between DMD and LDC2:

$ dmd -release -inline -O -noboundscheck -unittest singleton_2.d
 -oftest.exe && test.exe
Test time for LockSingleton: 606.5 msecs.
Test time for SyncSingleton: 7 msecs.
Test time for AtomicSingleton: 138 msecs.

$ ldmd2 -release -inline -O -noboundscheck -unittest singleton_2.d
 -oftest.exe && test.exe
Test time for LockSingleton: 536.25 msecs.
Test time for SyncSingleton: 5 msecs.
Test time for AtomicSingleton: 3 msecs.

Freaking awesome!