diff options
Diffstat (limited to 'src/basic/refcnt.h')
| -rw-r--r-- | src/basic/refcnt.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/basic/refcnt.h b/src/basic/refcnt.h index d2be6086d2..40f9a84a22 100644 --- a/src/basic/refcnt.h +++ b/src/basic/refcnt.h @@ -14,3 +14,41 @@ typedef struct { #define REFCNT_DEC(r) (__sync_sub_and_fetch(&(r)._value, 1)) #define REFCNT_INIT ((RefCount) { ._value = 1 }) + +#define _DEFINE_ATOMIC_REF_FUNC(type, name, scope) \ + scope type *name##_ref(type *p) { \ + if (!p) \ + return NULL; \ + \ + assert_se(REFCNT_INC(p->n_ref) >= 2); \ + return p; \ + } + +#define _DEFINE_ATOMIC_UNREF_FUNC(type, name, free_func, scope) \ + scope type *name##_unref(type *p) { \ + if (!p) \ + return NULL; \ + \ + if (REFCNT_DEC(p->n_ref) > 0) \ + return NULL; \ + \ + return free_func(p); \ + } + +#define DEFINE_ATOMIC_REF_FUNC(type, name) \ + _DEFINE_ATOMIC_REF_FUNC(type, name,) +#define DEFINE_PUBLIC_ATOMIC_REF_FUNC(type, name) \ + _DEFINE_ATOMIC_REF_FUNC(type, name, _public_) + +#define DEFINE_ATOMIC_UNREF_FUNC(type, name, free_func) \ + _DEFINE_ATOMIC_UNREF_FUNC(type, name, free_func,) +#define DEFINE_PUBLIC_ATOMIC_UNREF_FUNC(type, name, free_func) \ + _DEFINE_ATOMIC_UNREF_FUNC(type, name, free_func, _public_) + +#define DEFINE_ATOMIC_REF_UNREF_FUNC(type, name, free_func) \ + DEFINE_ATOMIC_REF_FUNC(type, name); \ + DEFINE_ATOMIC_UNREF_FUNC(type, name, free_func); + +#define DEFINE_PUBLIC_ATOMIC_REF_UNREF_FUNC(type, name, free_func) \ + DEFINE_PUBLIC_ATOMIC_REF_FUNC(type, name); \ + DEFINE_PUBLIC_ATOMIC_UNREF_FUNC(type, name, free_func); |