Przemyslaw Czerpak wrote:
> Thank you very much for the information. It means that dlmalloc.c
> will have to be updated to use native OS2 API in the future if it
> works as expected for Windows users.
> Probably you are the best person to make it in such case :-)
>
Przemyslaw,
I was looking at dlmalloc, so I decided to try the test program from Pritpal
(message of september, 18th), on OS/2, latest cvs code, hbrun with vmmt linked
in I can add nearly 816000 items before I get a realloc error.
809000
810000
811000
812000
813000
814000
815000
816000
Unrecoverable error 9009: hb_xrealloc can't reallocate memory
Called from AADD(0)
Called from MAIN(6) in pcode.hrb
Called from HB_HRBRUN(0)
Called from _APPMAIN(114) in ../../hbrun.prg
Now it has to be said that on OS/2 a program can allocate a maximum of 512Mb
(actually you top around 450-500Mb) because this is the virtual address space
assigned to each process.
It is possible to use more memory calling specific APIs, but a pointer to a
block into this memory, called 'high memory', cannot be passed to all OS/2
APIs. So it is of limited use.
That said, I think that porting dlmalloc to OS/2 is a waste of time without,
probably, any real advantage in terms of speed or stability (I see from
dlmalloc.c that it is not well suited for mt programs since it uses a global
lock which can become the bottleneck).
Those above are my two cents :)
Maurilio.
--
__________
| | | |__| Maurilio Longo
|_|_|_|____| farmaconsult s.r.l.
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