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Re: stats (and back-monitor) counters wrap when overflowing (ITS#3324)

hyc@symas.com wrote:

>It's a bit of an indirection, but I note that OpenSSL includes a BigNum 
>library for arbitrary precision. I'm hesitant to make OpenSSL a 
>requirement to support back-monitor, but since all of my deployments 
>include OpenSSL anyway, I'm also reluctant to add another math library 
Honestly, I preferred to use GMP if available; if not,
counters wrap, but at least remain unsigned!

Here's the output.

    [masarati@ando ldap]$ ldapsearch -x -H ldap://:9011 -b 
cn=statistics,cn=monitor monitorcounter -LLL
    dn: cn=Entries,cn=Statistics,cn=Monitor
    monitorCounter: 448337

    dn: cn=Referrals,cn=Statistics,cn=Monitor
    monitorCounter: 0

    dn: cn=PDU,cn=Statistics,cn=Monitor
    monitorCounter: 495515

    dn: cn=Bytes,cn=Statistics,cn=Monitor
    monitorCounter: 5244552798

I haven't checked yet if it still works without GMP
because I can't find a machine without, I'll manually
modify portable.h.  I haven't used the custom malloc
facilities of GMP; do you think it's worth, or should
we stay with system's malloc?


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