NAME

ck_pr_btr_ptr, ck_pr_btr_uint, ck_pr_btr_int, ck_pr_btr_64, ck_pr_btr_32, ck_pr_btr_16 —

atomic bit test-and-reset operations

LIBRARY

Concurrency Kit (libck, -lck)

#include <ck_pr.h>

bool
ck_pr_btr_ptr(void *target, unsigned int bit_index);

bool
ck_pr_btr_uint(uint *target, unsigned int bit_index);

bool
ck_pr_btr_int(int *target, unsigned int bit_index);

bool
ck_pr_btr_64(uint64_t *target, unsigned int bit_index);

bool
ck_pr_btr_32(uint32_t *target, unsigned int bit_index);

bool
ck_pr_btr_16(uint16_t *target, unsigned int bit_index);

The ck_pr_btr(3) family of functions atomically fetch the value of the bit in target at index bit_index and set that bit to 0.

This family of functions returns the original value of the bit at offset bit_index that is in the value pointed to by target.