Re: [PATCH] s_lock support for win32

Because we don't support non-gcc Win32 builds of the backend, adding
this patch doesn't make sense.  If we ever start to support non-gcc
Win32 backends we can add this.

---------------------------------------------------------------------------

Manfred Spraul wrote:
> Hi,
>
> The win32 port doesn't have a native user space spinlock implementation
> yet. Attached is an untested patch - could someone test it? I don't have
> Visual C++.
>
> --
>     Manfred
>
>
> !DSPAM:40e2f9cf213266268715824!

> Index: src/include/storage/s_lock.h
> ===================================================================
> RCS file: /projects/cvsroot/pgsql-server/src/include/storage/s_lock.h,v
> retrieving revision 1.126
> diff -c -r1.126 s_lock.h
> *** src/include/storage/s_lock.h    19 Jun 2004 23:02:32 -0000    1.126
> --- src/include/storage/s_lock.h    30 Jun 2004 17:14:08 -0000
> ***************
> *** 648,653 ****
> --- 648,661 ----
>
>   #endif    /* !defined(HAS_TEST_AND_SET) */
>
> + #if defined(WIN32)
> + #define HAS_TEST_AND_SET
> +
> + typedef long slock_t;
> +
> + #define TAS(lock)    (InterlockedExchange(lock, 1))
> + #define S_UNLOCK(lock)    (InterlockedExchange(lock, 0))
> + #endif
>
>   /* Blow up if we didn't have any way to do spinlocks */
>   #ifndef HAS_TEST_AND_SET
>
>
> !DSPAM:40e2f9cf213266268715824!

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