Allow volatile pointer relaxed atomic operations

nobu · nobu · commit 9f112afcde51 · 2025-06-05T17:32:24.000+09:00
diff --git a/ruby_atomic.h b/ruby_atomic.h
@@ -26,7 +26,7 @@
 #define ATOMIC_VALUE_EXCHANGE(var, val) RUBY_ATOMIC_VALUE_EXCHANGE(var, val)
 
 static inline rb_atomic_t
-rbimpl_atomic_load_relaxed(rb_atomic_t *ptr)
+rbimpl_atomic_load_relaxed(volatile rb_atomic_t *ptr)
 {
 #if defined(HAVE_GCC_ATOMIC_BUILTINS)
     return __atomic_load_n(ptr, __ATOMIC_RELAXED);
@@ -37,7 +37,7 @@ rbimpl_atomic_load_relaxed(rb_atomic_t *ptr)
 #define ATOMIC_LOAD_RELAXED(var) rbimpl_atomic_load_relaxed(&(var))
 
 static inline uint64_t
-rbimpl_atomic_u64_load_relaxed(const uint64_t *value)
+rbimpl_atomic_u64_load_relaxed(const volatile uint64_t *value)
 {
 #if defined(HAVE_GCC_ATOMIC_BUILTINS_64)
     return __atomic_load_n(value, __ATOMIC_RELAXED);
@@ -54,7 +54,7 @@ rbimpl_atomic_u64_load_relaxed(const uint64_t *value)
 #define ATOMIC_U64_LOAD_RELAXED(var) rbimpl_atomic_u64_load_relaxed(&(var))
 
 static inline void
-rbimpl_atomic_u64_set_relaxed(uint64_t *address, uint64_t value)
+rbimpl_atomic_u64_set_relaxed(volatile uint64_t *address, uint64_t value)
 {
 #if defined(HAVE_GCC_ATOMIC_BUILTINS_64)
     __atomic_store_n(address, value, __ATOMIC_RELAXED);
