PTHREAD_RWLOCKATTR_GETPSHARED(3)

📦 version 15.1, in freebsd 14.5, freebsd 15.1, nixpkgs unstable

✨ NAME ✨

okay bestie, welcome to the pthread_rwlockattr_getpshared(3) page from the Library Functions Manual 💖 this one is literally about getting the process shared attribute, and it's lowkey iconic.

pthread_rwlockattr_getpshared — get the process shared attribute. 🫶

📚 LIBRARY 📚

POSIX Threads Library (libpthread, -lpthread) — that's where this lives, bestie. ✨

🧚 SYNOPSIS 🧚

#include <pthread.h>

int
pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *restrict attr,
    int *restrict pshared);

No cap, that's the exact include and signature — copy it character for character. 💅

🌸 DESCRIPTION 🌸

So the pthread_rwlockattr_getpshared() function is used to get the process shared setting of a read/write lock attribute object. The setting is returned via pshared, and it may be one of two values:

  • PTHREAD_PROCESS_SHARED — Any thread of any process that has access to the memory where the read/write lock resides can manipulate the lock. 🔥
  • PTHREAD_PROCESS_PRIVATE — Only threads created within the same process as the thread that initialized the read/write lock can manipulate the lock. This is the default value. 👑

🎀 RETURN VALUES 🎀

If successful, the pthread_rwlockattr_getpshared() function will return zero. Otherwise an error number will be returned to indicate the error. periodt. 💅

💀 ERRORS 💀

The pthread_rwlockattr_getpshared() function may fail if:

  • [EINVAL] — The value specified by attr is invalid. 🚩

🦋 SEE ALSO 🦋

go check these besties, iykyk 🫶✨

⭐ STANDARDS ⭐

The pthread_rwlockattr_getpshared() function is expected to conform to Version 2 of the Single UNIX Specification (“SUSv2”). 🌈

👑 HISTORY 👑

The pthread_rwlockattr_getpshared() function first appeared in FreeBSD 3.0. vintage but still iconic, fr fr. 🎀

source/version: Debian · date: August 17, 2018 · stamp: PTHREAD_RWLOCKATTR_GETPSHARED(3) — mwah 💋✨

📦 where this page comes from