ATOMIC_SETBITS_INT(9)

💖 ATOMIC_SETBITS_INT(9) 💖

okay so bestie, welcome to the Kernel Developer's Manual page for ATOMIC_SETBITS_INT(9). it’s giving “tiny but powerful atomic bit energy,” and we’re gonna go through it together. 🫶✨

🌸 NAME 🌸

• atomic_setbits_int, atomic_clearbits_int — interface to perform atomic operations on data. literally that’s the whole vibe. 💅

✨ SYNOPSIS ✨

#include <sys/atomic.h>

void
atomic_setbits_int(unsigned int *p, unsigned int b);

void
atomic_clearbits_int(unsigned int *p, unsigned int b);

🦋 DESCRIPTION 🦋

The atomic bits set of functions provide an interface for changing data atomically with respect to interrupts and multiple processors in the system. no cap, that’s the whole point. 🔥

atomic_setbits_int() sets the bits in b in the integer pointed to by p. it is equivalent to:

*p |= b;

atomic_clearbits_int() clears the bits in b in the integer pointed to by p. it is equivalent to:

*p &= ~b;

🧚 CONTEXT 🧚

atomic_setbits_int() and atomic_clearbits_int() can be called:

• during autoconf
• from process context
• from interrupt context

so yeah, they’re flexible like that. 🌈

👑 SEE ALSO 👑

go check out these besties too:

• atomic_add_int(9)
• atomic_cas_uint(9)
• atomic_dec_int(9)
• atomic_inc_int(9)
• atomic_sub_int(9)
• atomic_swap_uint(9)

💜 HISTORY 💜

The atomic_setbits_int functions first appeared in OpenBSD 4.1. periodt. ✨

---

mwah 💋 this page came from Debian, dated February 13, 2014. bye bestie, go set some bits atomically! 🎀💖