FT_ATOMIC_STORE_CHAR_RELEASE -> FT_ATOMIC_STORE_CHAR_RELAXED

Author: dpdani

Include/cpython/pyatomic.h

@@ -479,6 +479,9 @@ static inline void
 _Py_atomic_store_ullong_relaxed(unsigned long long *obj,
                                 unsigned long long value);
 
+static inline void
+_Py_atomic_store_char_relaxed(char *obj, char value);
+
 
 // --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
 
@@ -502,9 +505,6 @@ _Py_atomic_store_ssize_release(Py_ssize_t *obj, Py_ssize_t value);
 static inline void
 _Py_atomic_store_int_release(int *obj, int value);
 
-static inline void
-_Py_atomic_store_char_release(char *obj, char value);
-
 static inline void
 _Py_atomic_store_uchar_release(unsigned char *obj, unsigned char value);
 

Include/cpython/pyatomic_gcc.h

@@ -517,6 +517,10 @@ _Py_atomic_store_ullong_relaxed(unsigned long long *obj,
                                 unsigned long long value)
 { __atomic_store_n(obj, value, __ATOMIC_RELAXED); }
 
+static inline void
+_Py_atomic_store_char_relaxed(char *obj, char value)
+{ __atomic_store_n(obj, value, __ATOMIC_RELEASE); }
+
 
 // --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
 
@@ -540,10 +544,6 @@ static inline void
 _Py_atomic_store_int_release(int *obj, int value)
 { __atomic_store_n(obj, value, __ATOMIC_RELEASE); }
 
-static inline void
-_Py_atomic_store_char_release(char *obj, char value)
-{ __atomic_store_n(obj, value, __ATOMIC_RELEASE); }
-
 static inline void
 _Py_atomic_store_uchar_release(unsigned char *obj, unsigned char value)
 { __atomic_store_n(obj, value, __ATOMIC_RELEASE); }

Include/cpython/pyatomic_msc.h

@@ -947,6 +947,12 @@ _Py_atomic_store_ullong_relaxed(unsigned long long *obj,
     *(volatile unsigned long long *)obj = value;
 }
 
+static inline void
+_Py_atomic_store_char_relaxed(char *obj, char value)
+{
+    *(volatile char *)obj = value;
+}
+
 
 // --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
 
@@ -1012,19 +1018,6 @@ _Py_atomic_store_int_release(int *obj, int value)
 #endif
 }
 
-static inline void
-_Py_atomic_store_char_release(char *obj, char value)
-{
-#if defined(_M_X64) || defined(_M_IX86)
-    *(char volatile *)obj = value;
-#elif defined(_M_ARM64)
-    _Py_atomic_ASSERT_ARG_TYPE(unsigned __int8);
-    __stlr8((unsigned __int8 volatile *)obj, (unsigned __int8)value);
-#else
-#  error "no implementation of _Py_atomic_store_char_release"
-#endif
-}
-
 static inline void
 _Py_atomic_store_uchar_release(unsigned char *obj, unsigned char value)
 {

Include/cpython/pyatomic_std.h

@@ -916,6 +916,14 @@ _Py_atomic_store_ullong_relaxed(unsigned long long *obj,
                           memory_order_relaxed);
 }
 
+static inline void
+_Py_atomic_store_char_relaxed(char *obj, char value)
+{
+    _Py_USING_STD;
+    atomic_store_explicit((_Atomic(char)*)obj, value,
+                          memory_order_relaxed);
+}
+
 
 // --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
 
@@ -959,14 +967,6 @@ _Py_atomic_store_int_release(int *obj, int value)
                           memory_order_release);
 }
 
-static inline void
-_Py_atomic_store_char_release(char *obj, char value)
-{
-    _Py_USING_STD;
-    atomic_store_explicit((_Atomic(char)*)obj, value,
-                          memory_order_release);
-}
-
 static inline void
 _Py_atomic_store_uchar_release(unsigned char *obj, unsigned char value)
 {

Include/internal/pycore_pyatomic_ft_wrappers.h

@@ -61,8 +61,8 @@ extern "C" {
     _Py_atomic_store_uint16_relaxed(&value, new_value)
 #define FT_ATOMIC_STORE_UINT32_RELAXED(value, new_value) \
     _Py_atomic_store_uint32_relaxed(&value, new_value)
-#define FT_ATOMIC_STORE_CHAR_RELEASE(value, new_value) \
-    _Py_atomic_store_char_release(&value, new_value)
+#define FT_ATOMIC_STORE_CHAR_RELAXED(value, new_value) \
+    _Py_atomic_store_char_relaxed(&value, new_value)
 #define FT_ATOMIC_LOAD_CHAR_RELAXED(value) \
     _Py_atomic_load_char_relaxed(&value)
 #define FT_ATOMIC_STORE_UCHAR_RELEASE(value, new_value) \

Python/structmember.c

@@ -171,16 +171,16 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             return -1;
         }
         if (v == Py_True)
-            FT_ATOMIC_STORE_CHAR_RELEASE(*(char*)addr, 1);
+            FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, 1);
         else
-            FT_ATOMIC_STORE_CHAR_RELEASE(*(char*)addr, 0);
+            FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, 0);
         break;
         }
     case Py_T_BYTE:{
         long long_val = PyLong_AsLong(v);
         if ((long_val == -1) && PyErr_Occurred())
             return -1;
-        FT_ATOMIC_STORE_CHAR_RELEASE(*(char*)addr, (char)long_val);
+        FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, (char)long_val);
         /* XXX: For compatibility, only warn about truncations
            for now. */
         if ((long_val > CHAR_MAX) || (long_val < CHAR_MIN))
@@ -320,7 +320,7 @@ PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
             PyErr_BadArgument();
             return -1;
         }
-        FT_ATOMIC_STORE_CHAR_RELEASE(*(char*)addr, string[0]);
+        FT_ATOMIC_STORE_CHAR_RELAXED(*(char*)addr, string[0]);
         break;
         }
     case Py_T_STRING: