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Make refcount 64 bits to avoid alignment issues; 

There may be a better way to solve this, but I can't think of one
that doesn't also violate strict aliasing.
This commit is contained in:
bjorn 2019-11-28 16:03:42 -08:00
parent 1030c01a35
commit 08f90ab1bd
1 changed files with 12 additions and 12 deletions
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24
src/core/ref.h
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@ -11,27 +11,27 @@
// Thread module is off, don't use atomics
typedef uint32_t Ref;
static inline uint32_t ref_inc(Ref* ref) { return ++*ref; }
static inline uint32_t ref_dec(Ref* ref) { return --*ref; }
typedef uint64_t Ref;
static inline uint64_t ref_inc(Ref* ref) { return ++*ref; }
static inline uint64_t ref_dec(Ref* ref) { return --*ref; }
#elif defined(_MSC_VER)
// MSVC atomics
#include <intrin.h>
typedef uint32_t Ref;
static inline uint32_t ref_inc(Ref* ref) { return _InterlockedIncrement(ref); }
static inline uint32_t ref_dec(Ref* ref) { return _InterlockedDecrement(ref); }
typedef uint64_t Ref;
static inline uint64_t ref_inc(Ref* ref) { return _InterlockedIncrement(ref); }
static inline uint64_t ref_dec(Ref* ref) { return _InterlockedDecrement(ref); }
#elif (defined(__GNUC_MINOR__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))) \
|| (__has_builtin(__atomic_add_fetch) && __has_builtin(__atomic_sub_fetch))
// GCC/Clang atomics
typedef uint32_t Ref;
static inline uint32_t ref_inc(Ref* ref) { return __atomic_add_fetch(ref, 1, __ATOMIC_SEQ_CST); }
static inline uint32_t ref_dec(Ref* ref) { return __atomic_sub_fetch(ref, 1, __ATOMIC_SEQ_CST); }
typedef uint64_t Ref;
static inline uint64_t ref_inc(Ref* ref) { return __atomic_add_fetch(ref, 1, __ATOMIC_SEQ_CST); }
static inline uint64_t ref_dec(Ref* ref) { return __atomic_sub_fetch(ref, 1, __ATOMIC_SEQ_CST); }
#else
@ -43,9 +43,9 @@ static inline uint32_t ref_dec(Ref* ref) { return __atomic_sub_fetch(ref, 1, __A
#endif
#include <stdatomic.h>
typedef _Atomic(uint32_t) Ref;
static inline uint32_t ref_inc(Ref* ref) { return atomic_fetch_add(ref, 1) + 1; }
static inline uint32_t ref_dec(Ref* ref) { return atomic_fetch_sub(ref, 1) - 1; }
typedef _Atomic(uint64_t) Ref;
static inline uint64_t ref_inc(Ref* ref) { return atomic_fetch_add(ref, 1) + 1; }
static inline uint64_t ref_dec(Ref* ref) { return atomic_fetch_sub(ref, 1) - 1; }
#endif