[x265] [PATCH] Resolve some patching issues for previous patch (deadlock)

[Derek Buitenhuis]

On 9/17/2013 2:11 PM, Min Chen wrote:
> # HG changeset patch
> # User Min Chen <chenm003 at 163.com>
> # Date 1379423463 -28800
> # Node ID c5c645aa14bfdbf482186730c59a000fdae10e07
> # Parent  0d33ff236f68bc2238138a7213301b2efc0e6426
> Resolve some patching issues for previous patch (deadlock).

Can you add a short description of how it is fixed to
the commit message?

Much of the patch is confusing without context.

>              uint64_t oldval = m_queuedBitmap[w];
> -            if (oldval == 0) // race condition
> +            uint64_t mask = m_queuedBitmap[w] & m_enableBitmap[w];
> +            if (mask == 0) // race condition
>                  break;

if (!(oldval & m_enableBitmap[w]))
    break;

No need for a new stack var. Just a matter of preference; feel
free to ignore.

- Derek