[zeromq-dev] [PATCH] zmq::clock_t : return correct value in rdtsc() on solaris

Martin Pales m.pales at gmail.com
Thu Oct 14 16:04:21 CEST 2010

On Thu, Oct 14, 2010 at 3:15 PM, Martin Sustrik <sustrik at 250bpm.com> wrote:

> On 10/14/2010 03:08 PM, Martin Sustrik wrote:
>> Hi Martin,
>>  the attached patch ensures that a correct rdtsc value is returned when
>>> compiled
>>> with sunstudio 12 compiler.
>> Just a check: This is a performance patch, right? The codebase still
>> works with sunstudio, even without this patch?
Correct, it's a performance patch. Previously, the rdtsc() function
returned 0 in my case, thus now_us() was used in now_ms() instead.
Now, an inline assembly code is in place.

> Also, you should check for the platform (x86 or x86-64). I would expect
> that sunstudio works with platforms that have no rdtsc instruction -- such
> as SPARC.
True. I also added platform checks. See the updated patch attached.


> Martin
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