Reference count

include/types/refcount.h

refcount_init

void refcount_init(refcount_t *rc, unsigned int val);

refcount_init referenced types:

• refcount_t

refcount_inc

bool refcount_inc(refcount_t *rc);

refcount_inc referenced types:

• refcount_t

refcount_inc_not_zero

bool refcount_inc_not_zero(refcount_t *rc);

refcount_inc_not_zero referenced types:

• refcount_t

refcount_read

uint32_t refcount_read(refcount_t *rc);

refcount_read referenced types:

• refcount_t

refcount_dec_and_test

bool refcount_dec_and_test(refcount_t *rc);

refcount_dec_and_test referenced types:

• refcount_t

Defines

REFCOUNT_GENERATE_GET_FOR_STRUCT_WITH_FAILURE_COND( \ __struct, __refcount_member, __failure_member, __failure_state)

#define REFCOUNT_GENERATE_GET_FOR_STRUCT_WITH_FAILURE_COND(                    \ __struct, __refcount_member, __failure_member, __failure_state)            \ static inline bool __struct##_get(struct __struct *obj) {                  \ uint32_t old;                                                          \ while (true) {                                                         \ old = atomic_load_explicit(&obj->__refcount_member,                \ memory_order_acquire);                  \ \ /* panic if refcount is zero (possible UAF) */

REFCOUNT_ASSERT_ZERO(rc)

#define REFCOUNT_ASSERT_ZERO(rc) (kassert(atomic_load(&rc) == 0))

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