qthread_id(3)

📦 version 1.22^20251007gitcedb1fc, in fedora 43, fedora 44

💖 qthread_id(3) 💖

okay bestie, so this one's from libqthread, and it's literally just "what's my number" for a qthread. tiny function, big main character energy. let's get into it 🫶

✨ NAME ✨

qthread_id — returns the qthread's unique ID number 👑

🌸 SYNOPSIS 🌸

#include <qthread.h>

unsigned int
qthread_id (void);

that's it. no args, no drama, just vibes 💅

🦋 DESCRIPTION 🦋

So this function returns the unique identifier that's associated with the qthread me — like, the you that is currently running. 🪞

It's used mostly for debugging, and here's the why: getting a global identifier requires synchronization, and bestie, synchronization is expensive. not the vibe. 🙈

Unless it's otherwise configured, the qthread library is lowkey lazy in the best way — it only assigns thread ids when they're asked for. no asking, no assigning. very demure. ✨

And generally, those values are monotonically increasing 📈 — but heads up, the value can wrap around after UINT_MAX-2 threads. so like, if you've spawned a truly unhinged number of threads, the numbers loop back around. she's circular, your honor. 🔁

💀 RETURN VALUE 💀

  • On success? you get the thread's identifying number back. slay. 💚
  • If you call it from outside the Qthreads library, you get QTHREAD_NON_TASK_ID back instead. (translation: "girl, you are not a task rn") 😭
  • The special value QTHREAD_NULL_TASK_ID will never be returned. never ever. not once. 🚫

🎀 SEE ALSO 🎀

go read those next, bestie, they're part of the same little family 🌈

fr fr: this is the debugging-friendly way to know which qthread you are. global ids cost synchronization, so this one is the cheap, iconic, no-sync option. iykyk 💅

and that's the whole page, angel 💜 — brought to you by libqthread, dated APRIL 2011, and originally formatted as qthread_id(3) under the libqthread manual. periodt. 🎀✨🦋

📦 where this page comes from