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Date: Wed, 03 Jul 2013 12:11:42 +0800
From: Julian Elischer <julian@freebsd.org>
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To: John Baldwin <jhb@freebsd.org>
Subject: Re: svn commit: r252346 - head/share/man/man9
References: <201306281633.r5SGXjFU017827@svn.freebsd.org>
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On 7/3/13 12:00 AM, John Baldwin wrote:
> On 6/29/13 6:37 AM, Julian Elischer wrote:
>> On 6/29/13 9:16 PM, Julian Elischer wrote:
>>> thanks!
>>>
>>>
>>>> -If the owner is not currently actually running then the spin step is
>>>> skipped.
>>>> +then a thread attempting to acquire the mutex will spin rather than
>>>> yielding
>>>> +the processor.
>> Am I wrong in thinking that it will only spin for a short while,
>> eventually yielding?
>>
>> The original text said this but the new text implies it will spin forever.
> It does not use a spin timeout.  I considered adding a separate note to
> define adaptive spinning generically as it is used by multiple lock
> types (mutexes, rwlocks, and sx locks).

this would be a good idea.
>