Store fiber serial as Ractor-local

1 files changed, 0 insertions, 23 deletions

diff --git a/ruby_atomic.h b/ruby_atomic.h
index b60c56cfd8..cbcfe682ce 100644
--- a/ruby_atomic.h
+++ b/ruby_atomic.h
@@ -70,27 +70,4 @@ rbimpl_atomic_u64_set_relaxed(volatile rbimpl_atomic_uint64_t *address, uint64_t
 }
 #define ATOMIC_U64_SET_RELAXED(var, val) rbimpl_atomic_u64_set_relaxed(&(var), val)
 
-static inline uint64_t
-rbimpl_atomic_u64_fetch_add(volatile rbimpl_atomic_uint64_t *ptr, uint64_t val)
-{
-#if defined(HAVE_GCC_ATOMIC_BUILTINS_64)
-    return __atomic_fetch_add(ptr, val, __ATOMIC_SEQ_CST);
-#elif defined(_WIN32)
-    return InterlockedExchangeAdd64((volatile LONG64 *)ptr, val);
-#elif defined(__sun) && defined(HAVE_ATOMIC_H) && (defined(_LP64) || defined(_I32LPx))
-    return atomic_add_64_nv(ptr, val) - val;
-#elif defined(HAVE_STDATOMIC_H)
-    return atomic_fetch_add_explicit((_Atomic uint64_t *)ptr, val, memory_order_seq_cst);
-#else
-    // Fallback using mutex for platforms without 64-bit atomics
-    static rb_nativethread_mutex_t lock = RB_NATIVETHREAD_LOCK_INIT;
-    rb_native_mutex_lock(&lock);
-    uint64_t old = *ptr;
-    *ptr = old + val;
-    rb_native_mutex_unlock(&lock);
-    return old;
-#endif
-}
-#define ATOMIC_U64_FETCH_ADD(var, val) rbimpl_atomic_u64_fetch_add(&(var), val)
-
 #endif