Jeff Garzik writes:
> When dealing with files it is common to mmap all of a file, or up to XXX
> bytes of a file. Is there any way to reduce the number of syscalls for
> this operation from 3 to 1?
>
> fd = open(...);
> stat(...); /* get size for mmap */
> addr = mmap(...);
Why do you want to reduce the number of syscalls? To improve speed?
You might find that the time is dominated by the mmap(2) call, which
has to set up page tables.
Regards,
Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca
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This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:37 EST