Sure. The plan is to use __thread when possible ;-)
Victor
On Thu, Feb 25, 2021 at 4:58 AM 谢俊逸 via Python-Dev
<python-dev@python.org> wrote:
>
> On MacOS & iOS, __thread variable is 35% faster than using
> pthread_getspecific.
>
> getSpecific cost: 0.000649
> getTLS cost: 0.000423
>
>
> - (void)test { double t1 = CFAbsoluteTimeGetCurrent(); for (int i = 0; i <
> 100000; i++) { [self getSpecific]; } double t2 = CFAbsoluteTimeGetCurrent();
> printf("getSpecific cost: %f\n", t2 - t1); double t3 =
> CFAbsoluteTimeGetCurrent(); for (int i = 0; i < 100000; i++) { [self getTLS];
> } double t4 = CFAbsoluteTimeGetCurrent(); printf("getTLS cost: %f\n", t4 -
> t3); } - (int)getSpecific { int * value = pthread_getspecific(tlsKey); return
> *value; } - (int)getTLS { return *tlv_v5; }
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