PTHREAD_RWLOCKATTR_DESTROY(3)

💅 PTHREAD_RWLOCKATTR_DESTROY(3) 💅

okay so bestie, you're in section 3 of the manual — that's the library functions section, iykyk — and today's main character is pthread_rwlockattr_destroy. yes, it's a long name, no, we're not abbreviating it, we're respecting her 💖

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✨ NAME ✨

pthread_rwlockattr_destroy — destroy a read/write lock attributes object 🎀

like, literally just clean up after yourself, that's the whole vibe.

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📚 LIBRARY 📚

POSIX Threads Library (that's libpthread, and you link it with -lpthread) 🧵✨

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🫶 SYNOPSIS 🫶

#include <pthread.h>

int
pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);

she takes exactly one argument, returns an int, that's it, that's the whole function signature, periodt 🌸

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💫 DESCRIPTION 💫

so pthread_rwlockattr_destroy() is the function you call to destroy a read/write lock attributes object — specifically one that was previously created with pthread_rwlockattr_init(). 🦋

think of it as the goodbye hug after the hello hug. init makes it, destroy un-makes it. the way that closure is important 😭💜

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🔥 RETURN VALUES 🔥

if everything goes great (and we love that for you), pthread_rwlockattr_destroy() returns zero. 🎉

otherwise it returns an error number to tell you what went wrong — that's error number, not -1 with errno set, so don't come for her with the errno assumptions 🙈

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💀 ERRORS 💀

the pthread_rwlockattr_destroy() function may fail if:

• [EINVAL] — the value specified by attr is invalid. 🚩 like, she looked at what you passed her and went "bestie what is this". make sure attr is actually a real attributes object, okay?

note: it says may fail, so this is the possible failure mode, not a promise. ngl, the wording is doing a lot of heavy lifting here 🫠

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🎀 SEE ALSO 🎀

• pthread_rwlockattr_init(3) — the other half of this story, the origin story if you will 👑

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🌈 STANDARDS 🌈

pthread_rwlockattr_destroy() is expected to conform to Version 2 of the Single UNIX Specification — you'll see that written as “SUSv2” 👑✨ so yes she's certified, she's legit, she's on spec.

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🧚 HISTORY 🧚

pthread_rwlockattr_destroy() first appeared in FreeBSD 3.0. ⭐ a whole era. a whole legacy. we stan a longstanding API.

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and that's the page, bestie 🫶 go destroy those attributes responsibly, and remember: what init joins together, destroy puts asunder 💅

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Debian 🌸 August 4, 1998 — yeah she's been sitting in this manpage since the late nineties and she still ate, fr fr 💖🎀