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From: Muttley@dastardlyhq.com
Newsgroups: comp.lang.c++
Subject: Re: counting_semaphore question
Date: Fri, 13 Sep 2024 13:41:33 -0000 (UTC)
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On Fri, 13 Sep 2024 15:29:37 +0200
Bonita Montero <Bonita.Montero@gmail.com> boringly babbled:
>Am 13.09.2024 um 15:21 schrieb Muttley@dastardlyhq.com:
>
>> Oh right, so for 32 bit TCP seq number instead of just doing:
>> 
>> ++tcp->seq_num;
>> 
>> which would autonatically wrap after 2^32, in your world we'd have do to:
>> 
>> tcp->seq_num = (uint32_t)(((uint_64_t)tcp->seq_num + 1) % 0x100000000L);
>> 
>> Really?
>> 
>> Don't be an ass.
>
>I've also not seen any meaningful code which shows what this
>maximum is good for .... But what sense should a wrap-around
>make with a semaphore ??? A semaphore should remember all its
>releases if possible.

Its not about semaphores any more, its about wrapping values in general.