ZMQ_ERRNO(3)

💖 ZMQ_ERRNO(3) 💖

okay so bestie, welcome to the 0MQ Manual corner of the internet, where we talk about zmq_errno — the tiny little function that grabs your thread's errno value and hands it to you like it's a friendship bracelet. ✨

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🌸 NAME 🌸

zmq_errno — retrieve value of errno for the calling thread

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🎀 SYNOPSIS 🎀

int zmq_errno (void);

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🦋 DESCRIPTION 🦋

okay so the way that zmq_errno() works is it shall retrieve the value of the errno variable for the calling thread. that's it. that's the whole vibe. 💅

and like, why does this even exist? because zmq_errno() is here to assist users on non-POSIX systems who are out here experiencing issues with retrieving the correct value of errno directly. specifically — and this is the important part — users on Win32 systems whose application is using a different C run-time library from the C run-time library in use by 0MQ will need to use zmq_errno() for correct operation. it's giving "two different CRTs, one chaotic error value" 😭

Important 🚨 if you're not experiencing issues with retrieving the correct value of errno, do not use this function. like, literally just access the errno variable directly. this function is not for you, bestie, it's for the people whose runtime libraries are fighting 💀

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⭐ RETURN VALUE ⭐

the zmq_errno() function shall return the value of the errno variable for the calling thread. yes, the same thing we said in DESCRIPTION. yes, it's a whole circle. that's the API, babes. 🔥

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💀 ERRORS 💀

no errors are defined. not a single one. the error function has no errors. iconic behavior honestly 👑

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🌈 SEE ALSO 🌈

• zmq(7)

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👑 AUTHORS 👑

this page was written by the 0MQ community. to make a change please read the 0MQ Contribution Policy at http://www.zeromq.org/docs:contributing. 🫶

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and that's the whole page, bestie!! 🍓 this one came to you from 0MQ 4.3.5, dated 10/09/2023 — so if you see a version bump later, don't come for me, come for the maintainers 💖 mwah, go read your errno directly if you can, ily 🧚