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mdbx: workaround for older stdatomic.h versions, where the ATOMIC_*_LOCK_FREE macros mistakenly redefined using functions (backport).

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Леонид Юрьев (Leonid Yuriev) 2022-10-13 17:36:53 +03:00
parent 7b60363a31
commit 2684c89d91
3 changed files with 9 additions and 28 deletions
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2
ChangeLog.md
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@ -6,6 +6,8 @@ ChangeLog
Fixes:
- Fixed builds with older libc versions after using `fcntl64()` (backport).
- Fixed builds with older `stdatomic.h` versions,
where the `ATOMIC_*_LOCK_FREE` macros mistakenly redefined using functions (backport).
## v0.11.12 (Эребуни) at 2022-10-12

21
src/core.c
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@ -983,14 +983,7 @@ static __always_inline bool atomic_cas64(MDBX_atomic_uint64_t *p, uint64_t c,
uint64_t v) {
#ifdef MDBX_HAVE_C11ATOMICS
STATIC_ASSERT(sizeof(long long) >= sizeof(uint64_t));
#ifdef ATOMIC_LLONG_LOCK_FREE
STATIC_ASSERT(ATOMIC_LLONG_LOCK_FREE > 0);
#if ATOMIC_LLONG_LOCK_FREE < 2
assert(atomic_is_lock_free(MDBX_c11a_rw(uint64_t, p)));
#endif /* ATOMIC_LLONG_LOCK_FREE < 2 */
#else /* defined(ATOMIC_LLONG_LOCK_FREE) */
assert(atomic_is_lock_free(MDBX_c11a_rw(uint64_t, p)));
#endif
return atomic_compare_exchange_strong(MDBX_c11a_rw(uint64_t, p), &c, v);
#elif defined(__GNUC__) || defined(__clang__)
return __sync_bool_compare_and_swap(&p->weak, c, v);
@ -1009,14 +1002,7 @@ static __always_inline bool atomic_cas32(MDBX_atomic_uint32_t *p, uint32_t c,
uint32_t v) {
#ifdef MDBX_HAVE_C11ATOMICS
STATIC_ASSERT(sizeof(int) >= sizeof(uint32_t));
#ifdef ATOMIC_INT_LOCK_FREE
STATIC_ASSERT(ATOMIC_INT_LOCK_FREE > 0);
#if ATOMIC_INT_LOCK_FREE < 2
assert(atomic_is_lock_free(MDBX_c11a_rw(uint32_t, p)));
#endif
#else
assert(atomic_is_lock_free(MDBX_c11a_rw(uint32_t, p)));
#endif
return atomic_compare_exchange_strong(MDBX_c11a_rw(uint32_t, p), &c, v);
#elif defined(__GNUC__) || defined(__clang__)
return __sync_bool_compare_and_swap(&p->weak, c, v);
@ -1035,14 +1021,7 @@ static __always_inline uint32_t atomic_add32(MDBX_atomic_uint32_t *p,
uint32_t v) {
#ifdef MDBX_HAVE_C11ATOMICS
STATIC_ASSERT(sizeof(int) >= sizeof(uint32_t));
#ifdef ATOMIC_INT_LOCK_FREE
STATIC_ASSERT(ATOMIC_INT_LOCK_FREE > 0);
#if ATOMIC_INT_LOCK_FREE < 2
assert(atomic_is_lock_free(MDBX_c11a_rw(uint32_t, p)));
#endif
#else
assert(atomic_is_lock_free(MDBX_c11a_rw(uint32_t, p)));
#endif
return atomic_fetch_add(MDBX_c11a_rw(uint32_t, p), v);
#elif defined(__GNUC__) || defined(__clang__)
return __sync_fetch_and_add(&p->weak, v);

14
src/options.h
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@ -326,13 +326,7 @@
#endif /* MDBX_64BIT_ATOMIC */
#ifndef MDBX_64BIT_CAS
#if defined(ATOMIC_LLONG_LOCK_FREE)
#if ATOMIC_LLONG_LOCK_FREE > 1
#define MDBX_64BIT_CAS 1
#else
#define MDBX_64BIT_CAS 0
#endif
#elif defined(__GCC_ATOMIC_LLONG_LOCK_FREE)
#if defined(__GCC_ATOMIC_LLONG_LOCK_FREE)
#if __GCC_ATOMIC_LLONG_LOCK_FREE > 1
#define MDBX_64BIT_CAS 1
#else
@ -344,6 +338,12 @@
#else
#define MDBX_64BIT_CAS 0
#endif
#elif defined(ATOMIC_LLONG_LOCK_FREE)
#if ATOMIC_LLONG_LOCK_FREE > 1
#define MDBX_64BIT_CAS 1
#else
#define MDBX_64BIT_CAS 0
#endif
#elif defined(_MSC_VER) || defined(__APPLE__) || defined(DOXYGEN)
#define MDBX_64BIT_CAS 1
#else