Przemyslaw,
Przemysław Czerpak wrote:
> Such results can be a little bit change by autoinlining when -O3 is used
> so it would be nice if you can also test this function:
>
> ULONG _hb_gettid2( void )
> {
> ULONG tid = 0;
> PTIB ptib = NULL;
>
> if( DosGetInfoBlocks( &ptib, NULL ) == NO_ERROR )
> tid = ptib->tib_ptib2->tib2_ultid;
>
> return tid;
> }
>
Here it is:
(E:\harbour\test)gettid
Time _hb_gettid() 693
Time _gettid() 1787
Time _hb_gettid2() 2952
> Yes it is and it's good place to store such information but it's not TLS
> area :-)
Ok, but bear in mind that on OS/2 TLS area is a very limited resource:
--------8<---------------
When a process is started, a small block of memory is set aside to be used as
a thread-local memory area. This memory is at the same virtual address for
each thread, but is backed by different physical memory. This permits each
thread to have a small block of memory that is unique, or local, to that thread.
The thread-local memory area consists of 32 DWORDs (128 bytes), each DWORD
being 4 bytes in size. Up to 8 DWORDs (32 bytes) can be requested each time
this function is called. If you want to allocate more than 8 DWORDs, you must
call this function more than once.
Allocation is by DWORD only. If you want to store a BYTE in the thread-local
memory area, you would still allocate a DWORD, then store the BYTE in it.
Best regards.
Maurilio.
--
__________
| | | |__| Maurilio Longo
|_|_|_|____| farmaconsult s.r.l.
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