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Name	Size	Permission	Date
internal	[ DIR ]	drwxr-xr-x	2024-05-22 10:37
Python-ast.h	21.29 KB	-rw-r--r--	2023-06-05 20:46
Python.h	3.47 KB	-rw-r--r--	2023-06-05 20:45
abstract.h	39.84 KB	-rw-r--r--	2023-06-05 20:45
accu.h	1016 B	-rw-r--r--	2023-06-05 20:45
asdl.h	1.18 KB	-rw-r--r--	2023-06-05 20:45
ast.h	641 B	-rw-r--r--	2023-06-05 20:45
bitset.h	810 B	-rw-r--r--	2023-06-05 20:45
bltinmodule.h	264 B	-rw-r--r--	2023-06-05 20:45
boolobject.h	886 B	-rw-r--r--	2023-06-05 20:45
bytearrayobject.h	2.06 KB	-rw-r--r--	2023-06-05 20:45
bytes_methods.h	3.22 KB	-rw-r--r--	2023-06-05 20:45
bytesobject.h	8.29 KB	-rw-r--r--	2023-06-05 20:45
cellobject.h	713 B	-rw-r--r--	2023-06-05 20:45
ceval.h	8.51 KB	-rw-r--r--	2023-06-05 20:45
classobject.h	1.64 KB	-rw-r--r--	2023-06-05 20:45
code.h	5.92 KB	-rw-r--r--	2023-06-05 20:45
codecs.h	6.63 KB	-rw-r--r--	2023-06-05 20:45
compile.h	2.88 KB	-rw-r--r--	2023-06-05 20:45
complexobject.h	1.76 KB	-rw-r--r--	2023-06-05 20:45
context.h	1.97 KB	-rw-r--r--	2023-06-05 20:45
datetime.h	9.62 KB	-rw-r--r--	2023-06-05 20:45
descrobject.h	3.06 KB	-rw-r--r--	2023-06-05 20:45
dictobject.h	7.15 KB	-rw-r--r--	2023-06-05 20:45
dtoa.h	458 B	-rw-r--r--	2023-06-05 20:45
dynamic_annotations.h	21.94 KB	-rw-r--r--	2023-06-05 20:45
enumobject.h	253 B	-rw-r--r--	2023-06-05 20:45
errcode.h	1.66 KB	-rw-r--r--	2023-06-05 20:45
eval.h	1.18 KB	-rw-r--r--	2023-06-05 20:45
fileobject.h	1.77 KB	-rw-r--r--	2023-06-05 20:45
fileutils.h	4.43 KB	-rw-r--r--	2023-06-05 20:45
floatobject.h	4.68 KB	-rw-r--r--	2023-06-05 20:45
frameobject.h	3.24 KB	-rw-r--r--	2023-06-05 20:45
funcobject.h	4.08 KB	-rw-r--r--	2023-06-05 20:45
genobject.h	3.56 KB	-rw-r--r--	2023-06-05 20:45
graminit.h	1.95 KB	-rw-r--r--	2023-06-05 20:45
grammar.h	2.26 KB	-rw-r--r--	2023-06-05 20:45
import.h	4.86 KB	-rw-r--r--	2023-06-05 20:45
intrcheck.h	861 B	-rw-r--r--	2023-06-05 20:45
iterobject.h	567 B	-rw-r--r--	2023-06-05 20:45
listobject.h	2.86 KB	-rw-r--r--	2023-06-05 20:45
longintrepr.h	3.71 KB	-rw-r--r--	2023-06-05 20:45
longobject.h	8.39 KB	-rw-r--r--	2023-06-05 20:45
marshal.h	803 B	-rw-r--r--	2023-06-05 20:45
memoryobject.h	2.7 KB	-rw-r--r--	2023-06-05 20:45
metagrammar.h	253 B	-rw-r--r--	2023-06-05 20:45
methodobject.h	4.41 KB	-rw-r--r--	2023-06-05 20:45
modsupport.h	8.36 KB	-rw-r--r--	2023-06-05 20:45
moduleobject.h	2.25 KB	-rw-r--r--	2023-06-05 20:45
namespaceobject.h	349 B	-rw-r--r--	2023-06-05 20:45
node.h	1.09 KB	-rw-r--r--	2023-06-05 20:45
object.h	40.86 KB	-rw-r--r--	2023-06-05 20:45
objimpl.h	14.13 KB	-rw-r--r--	2023-06-05 20:45
odictobject.h	1.25 KB	-rw-r--r--	2023-06-05 20:45
opcode.h	4.99 KB	-rw-r--r--	2023-06-05 20:45
osdefs.h	691 B	-rw-r--r--	2023-06-05 20:45
osmodule.h	291 B	-rw-r--r--	2023-06-05 20:45
parsetok.h	2.84 KB	-rw-r--r--	2023-06-05 20:45
patchlevel.h	1.27 KB	-rw-r--r--	2023-06-05 20:45
pgen.h	253 B	-rw-r--r--	2023-06-05 20:45
pgenheaders.h	1.19 KB	-rw-r--r--	2023-06-05 20:45
py_curses.h	3.97 KB	-rw-r--r--	2023-06-05 20:45
pyarena.h	2.68 KB	-rw-r--r--	2023-06-05 20:45
pyatomic.h	15.74 KB	-rw-r--r--	2023-06-05 20:45
pycapsule.h	1.69 KB	-rw-r--r--	2023-06-05 20:45
pyconfig-64.h	44.25 KB	-rw-r--r--	2024-04-17 17:33
pyconfig.h	162 B	-rw-r--r--	2024-04-17 17:35
pyctype.h	1.29 KB	-rw-r--r--	2023-06-05 20:45
pydebug.h	1.19 KB	-rw-r--r--	2023-06-05 20:45
pydtrace.h	2.23 KB	-rw-r--r--	2023-06-05 20:45
pyerrors.h	16.96 KB	-rw-r--r--	2023-06-05 20:45
pyexpat.h	2.39 KB	-rw-r--r--	2023-06-05 20:45
pyfpe.h	341 B	-rw-r--r--	2023-06-05 20:45
pyhash.h	4.04 KB	-rw-r--r--	2023-06-05 20:45
pylifecycle.h	7.6 KB	-rw-r--r--	2023-06-05 20:45
pymacconfig.h	2.92 KB	-rw-r--r--	2023-06-05 20:45
pymacro.h	3.45 KB	-rw-r--r--	2023-06-05 20:45
pymath.h	8.12 KB	-rw-r--r--	2023-06-05 20:45
pymem.h	8.78 KB	-rw-r--r--	2023-06-05 20:45
pyport.h	27.57 KB	-rw-r--r--	2023-06-05 20:45
pystate.h	15.94 KB	-rw-r--r--	2023-06-05 20:45
pystrcmp.h	436 B	-rw-r--r--	2023-06-05 20:45
pystrhex.h	495 B	-rw-r--r--	2023-06-05 20:45
pystrtod.h	1.45 KB	-rw-r--r--	2023-06-05 20:45
pythonrun.h	6.06 KB	-rw-r--r--	2023-06-05 20:45
pythread.h	5.21 KB	-rw-r--r--	2023-06-05 20:45
pytime.h	8.72 KB	-rw-r--r--	2023-06-05 20:45
rangeobject.h	629 B	-rw-r--r--	2023-06-05 20:45
setobject.h	3.28 KB	-rw-r--r--	2023-06-05 20:45
sliceobject.h	2.42 KB	-rw-r--r--	2023-06-05 20:45
structmember.h	1.98 KB	-rw-r--r--	2023-06-05 20:45
structseq.h	1.34 KB	-rw-r--r--	2023-06-05 20:45
symtable.h	4.81 KB	-rw-r--r--	2023-06-05 20:45
sysmodule.h	1.48 KB	-rw-r--r--	2023-06-05 20:45
token.h	2.42 KB	-rw-r--r--	2023-06-05 20:45
traceback.h	3.56 KB	-rw-r--r--	2023-06-05 20:45
tupleobject.h	2.41 KB	-rw-r--r--	2023-06-05 20:45
typeslots.h	2.2 KB	-rw-r--r--	2023-06-05 20:45
ucnhash.h	1.03 KB	-rw-r--r--	2023-06-05 20:45
unicodeobject.h	80.35 KB	-rw-r--r--	2023-06-05 20:45
warnings.h	1.73 KB	-rw-r--r--	2023-06-05 20:45
weakrefobject.h	2.8 KB	-rw-r--r--	2023-06-05 20:45

Rename

#ifndef Py_ATOMIC_H
#define Py_ATOMIC_H
#ifdef Py_BUILD_CORE

#include "dynamic_annotations.h"

#include "pyconfig.h"

#if defined(HAVE_STD_ATOMIC)
#include <stdatomic.h>
#endif

#if defined(_MSC_VER)
#include <intrin.h>
#include <immintrin.h>
#endif

/* This is modeled after the atomics interface from C1x, according to
 * the draft at
 * http://www.open-std.org/JTC1/SC22/wg14/www/docs/n1425.pdf.
 * Operations and types are named the same except with a _Py_ prefix
 * and have the same semantics.
 *
 * Beware, the implementations here are deep magic.
 */

#if defined(HAVE_STD_ATOMIC)

typedef enum _Py_memory_order {
    _Py_memory_order_relaxed = memory_order_relaxed,
    _Py_memory_order_acquire = memory_order_acquire,
    _Py_memory_order_release = memory_order_release,
    _Py_memory_order_acq_rel = memory_order_acq_rel,
    _Py_memory_order_seq_cst = memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    atomic_uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    atomic_int _value;
} _Py_atomic_int;

#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
    atomic_signal_fence(ORDER)

#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
    atomic_thread_fence(ORDER)

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    atomic_store_explicit(&(ATOMIC_VAL)->_value, NEW_VAL, ORDER)

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    atomic_load_explicit(&(ATOMIC_VAL)->_value, ORDER)

/* Use builtin atomic operations in GCC >= 4.7 */
#elif defined(HAVE_BUILTIN_ATOMIC)

typedef enum _Py_memory_order {
    _Py_memory_order_relaxed = __ATOMIC_RELAXED,
    _Py_memory_order_acquire = __ATOMIC_ACQUIRE,
    _Py_memory_order_release = __ATOMIC_RELEASE,
    _Py_memory_order_acq_rel = __ATOMIC_ACQ_REL,
    _Py_memory_order_seq_cst = __ATOMIC_SEQ_CST
} _Py_memory_order;

typedef struct _Py_atomic_address {
    uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    int _value;
} _Py_atomic_int;

#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
    __atomic_signal_fence(ORDER)

#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
    __atomic_thread_fence(ORDER)

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    (assert((ORDER) == __ATOMIC_RELAXED                       \
            || (ORDER) == __ATOMIC_SEQ_CST                    \
            || (ORDER) == __ATOMIC_RELEASE),                  \
     __atomic_store_n(&(ATOMIC_VAL)->_value, NEW_VAL, ORDER))

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER)           \
    (assert((ORDER) == __ATOMIC_RELAXED                       \
            || (ORDER) == __ATOMIC_SEQ_CST                    \
            || (ORDER) == __ATOMIC_ACQUIRE                    \
            || (ORDER) == __ATOMIC_CONSUME),                  \
     __atomic_load_n(&(ATOMIC_VAL)->_value, ORDER))

/* Only support GCC (for expression statements) and x86 (for simple
 * atomic semantics) and MSVC x86/x64/ARM */
#elif defined(__GNUC__) && (defined(__i386__) || defined(__amd64))
typedef enum _Py_memory_order {
    _Py_memory_order_relaxed,
    _Py_memory_order_acquire,
    _Py_memory_order_release,
    _Py_memory_order_acq_rel,
    _Py_memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    int _value;
} _Py_atomic_int;

static __inline__ void
_Py_atomic_signal_fence(_Py_memory_order order)
{
    if (order != _Py_memory_order_relaxed)
        __asm__ volatile("":::"memory");
}

static __inline__ void
_Py_atomic_thread_fence(_Py_memory_order order)
{
    if (order != _Py_memory_order_relaxed)
        __asm__ volatile("mfence":::"memory");
}

/* Tell the race checker about this operation's effects. */
static __inline__ void
_Py_ANNOTATE_MEMORY_ORDER(const volatile void *address, _Py_memory_order order)
{
    (void)address;              /* shut up -Wunused-parameter */
    switch(order) {
    case _Py_memory_order_release:
    case _Py_memory_order_acq_rel:
    case _Py_memory_order_seq_cst:
        _Py_ANNOTATE_HAPPENS_BEFORE(address);
        break;
    case _Py_memory_order_relaxed:
    case _Py_memory_order_acquire:
        break;
    }
    switch(order) {
    case _Py_memory_order_acquire:
    case _Py_memory_order_acq_rel:
    case _Py_memory_order_seq_cst:
        _Py_ANNOTATE_HAPPENS_AFTER(address);
        break;
    case _Py_memory_order_relaxed:
    case _Py_memory_order_release:
        break;
    }
}

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    __extension__ ({ \
        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
        __typeof__(atomic_val->_value) new_val = NEW_VAL;\
        volatile __typeof__(new_val) *volatile_data = &atomic_val->_value; \
        _Py_memory_order order = ORDER; \
        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
        \
        /* Perform the operation. */ \
        _Py_ANNOTATE_IGNORE_WRITES_BEGIN(); \
        switch(order) { \
        case _Py_memory_order_release: \
            _Py_atomic_signal_fence(_Py_memory_order_release); \
            /* fallthrough */ \
        case _Py_memory_order_relaxed: \
            *volatile_data = new_val; \
            break; \
        \
        case _Py_memory_order_acquire: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            __asm__ volatile("xchg %0, %1" \
                         : "+r"(new_val) \
                         : "m"(atomic_val->_value) \
                         : "memory"); \
            break; \
        } \
        _Py_ANNOTATE_IGNORE_WRITES_END(); \
    })

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    __extension__ ({  \
        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
        __typeof__(atomic_val->_value) result; \
        volatile __typeof__(result) *volatile_data = &atomic_val->_value; \
        _Py_memory_order order = ORDER; \
        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
        \
        /* Perform the operation. */ \
        _Py_ANNOTATE_IGNORE_READS_BEGIN(); \
        switch(order) { \
        case _Py_memory_order_release: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            /* Loads on x86 are not releases by default, so need a */ \
            /* thread fence. */ \
            _Py_atomic_thread_fence(_Py_memory_order_release); \
            break; \
        default: \
            /* No fence */ \
            break; \
        } \
        result = *volatile_data; \
        switch(order) { \
        case _Py_memory_order_acquire: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            /* Loads on x86 are automatically acquire operations so */ \
            /* can get by with just a compiler fence. */ \
            _Py_atomic_signal_fence(_Py_memory_order_acquire); \
            break; \
        default: \
            /* No fence */ \
            break; \
        } \
        _Py_ANNOTATE_IGNORE_READS_END(); \
        result; \
    })

#elif defined(_MSC_VER)
/*  _Interlocked* functions provide a full memory barrier and are therefore
    enough for acq_rel and seq_cst. If the HLE variants aren't available
    in hardware they will fall back to a full memory barrier as well.

This might affect performance but likely only in some very specific and
    hard to meassure scenario.
*/
#if defined(_M_IX86) || defined(_M_X64)
typedef enum _Py_memory_order {
    _Py_memory_order_relaxed,
    _Py_memory_order_acquire,
    _Py_memory_order_release,
    _Py_memory_order_acq_rel,
    _Py_memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    volatile uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    volatile int _value;
} _Py_atomic_int;

#if defined(_M_X64)
#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) \
    switch (ORDER) { \
    case _Py_memory_order_acquire: \
      _InterlockedExchange64_HLEAcquire((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
    case _Py_memory_order_release: \
      _InterlockedExchange64_HLERelease((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
    default: \
      _InterlockedExchange64((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
  }
#else
#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) ((void)0);
#endif

#define _Py_atomic_store_32bit(ATOMIC_VAL, NEW_VAL, ORDER) \
  switch (ORDER) { \
  case _Py_memory_order_acquire: \
    _InterlockedExchange_HLEAcquire((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  case _Py_memory_order_release: \
    _InterlockedExchange_HLERelease((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  default: \
    _InterlockedExchange((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  }

#if defined(_M_X64)
/*  This has to be an intptr_t for now.
    gil_created() uses -1 as a sentinel value, if this returns
    a uintptr_t it will do an unsigned compare and crash
*/
inline intptr_t _Py_atomic_load_64bit(volatile uintptr_t* value, int order) {
    __int64 old;
    switch (order) {
    case _Py_memory_order_acquire:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64_HLEAcquire((volatile __int64*)value, old, old) != old);
      break;
    }
    case _Py_memory_order_release:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64_HLERelease((volatile __int64*)value, old, old) != old);
      break;
    }
    case _Py_memory_order_relaxed:
      old = *value;
      break;
    default:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64((volatile __int64*)value, old, old) != old);
      break;
    }
    }
    return old;
}

#else
#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) *ATOMIC_VAL
#endif

inline int _Py_atomic_load_32bit(volatile int* value, int order) {
    long old;
    switch (order) {
    case _Py_memory_order_acquire:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange_HLEAcquire((volatile long*)value, old, old) != old);
      break;
    }
    case _Py_memory_order_release:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange_HLERelease((volatile long*)value, old, old) != old);
      break;
    }
    case _Py_memory_order_relaxed:
      old = *value;
      break;
    default:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange((volatile long*)value, old, old) != old);
      break;
    }
    }
    return old;
}

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
  if (sizeof(*ATOMIC_VAL._value) == 8) { \
    _Py_atomic_store_64bit((volatile long long*)ATOMIC_VAL._value, NEW_VAL, ORDER) } else { \
    _Py_atomic_store_32bit((volatile long*)ATOMIC_VAL._value, NEW_VAL, ORDER) }

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
  ( \
    sizeof(*(ATOMIC_VAL._value)) == 8 ? \
    _Py_atomic_load_64bit((volatile long long*)ATOMIC_VAL._value, ORDER) : \
    _Py_atomic_load_32bit((volatile long*)ATOMIC_VAL._value, ORDER) \
  )
#elif defined(_M_ARM) || defined(_M_ARM64)
typedef enum _Py_memory_order {
    _Py_memory_order_relaxed,
    _Py_memory_order_acquire,
    _Py_memory_order_release,
    _Py_memory_order_acq_rel,
    _Py_memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    volatile uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    volatile int _value;
} _Py_atomic_int;

#if defined(_M_ARM64)
#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) \
    switch (ORDER) { \
    case _Py_memory_order_acquire: \
      _InterlockedExchange64_acq((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
    case _Py_memory_order_release: \
      _InterlockedExchange64_rel((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
    default: \
      _InterlockedExchange64((__int64 volatile*)ATOMIC_VAL, (__int64)NEW_VAL); \
      break; \
  }
#else
#define _Py_atomic_store_64bit(ATOMIC_VAL, NEW_VAL, ORDER) ((void)0);
#endif

#define _Py_atomic_store_32bit(ATOMIC_VAL, NEW_VAL, ORDER) \
  switch (ORDER) { \
  case _Py_memory_order_acquire: \
    _InterlockedExchange_acq((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  case _Py_memory_order_release: \
    _InterlockedExchange_rel((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  default: \
    _InterlockedExchange((volatile long*)ATOMIC_VAL, (int)NEW_VAL); \
    break; \
  }

#if defined(_M_ARM64)
/*  This has to be an intptr_t for now.
    gil_created() uses -1 as a sentinel value, if this returns
    a uintptr_t it will do an unsigned compare and crash
*/
inline intptr_t _Py_atomic_load_64bit(volatile uintptr_t* value, int order) {
    uintptr_t old;
    switch (order) {
    case _Py_memory_order_acquire:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64_acq(value, old, old) != old);
      break;
    }
    case _Py_memory_order_release:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64_rel(value, old, old) != old);
      break;
    }
    case _Py_memory_order_relaxed:
      old = *value;
      break;
    default:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange64(value, old, old) != old);
      break;
    }
    }
    return old;
}

#else
#define _Py_atomic_load_64bit(ATOMIC_VAL, ORDER) *ATOMIC_VAL
#endif

inline int _Py_atomic_load_32bit(volatile int* value, int order) {
    int old;
    switch (order) {
    case _Py_memory_order_acquire:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange_acq(value, old, old) != old);
      break;
    }
    case _Py_memory_order_release:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange_rel(value, old, old) != old);
      break;
    }
    case _Py_memory_order_relaxed:
      old = *value;
      break;
    default:
    {
      do {
        old = *value;
      } while(_InterlockedCompareExchange(value, old, old) != old);
      break;
    }
    }
    return old;
}

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
  if (sizeof(*ATOMIC_VAL._value) == 8) { \
    _Py_atomic_store_64bit(ATOMIC_VAL._value, NEW_VAL, ORDER) } else { \
    _Py_atomic_store_32bit(ATOMIC_VAL._value, NEW_VAL, ORDER) }

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
  ( \
    sizeof(*(ATOMIC_VAL._value)) == 8 ? \
    _Py_atomic_load_64bit(ATOMIC_VAL._value, ORDER) : \
    _Py_atomic_load_32bit(ATOMIC_VAL._value, ORDER) \
  )
#endif
#else  /* !gcc x86  !_msc_ver */
typedef enum _Py_memory_order {
    _Py_memory_order_relaxed,
    _Py_memory_order_acquire,
    _Py_memory_order_release,
    _Py_memory_order_acq_rel,
    _Py_memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    int _value;
} _Py_atomic_int;
/* Fall back to other compilers and processors by assuming that simple
   volatile accesses are atomic.  This is false, so people should port
   this. */
#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) ((void)0)
#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) ((void)0)
#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    ((ATOMIC_VAL)->_value = NEW_VAL)
#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    ((ATOMIC_VAL)->_value)
#endif

/* Standardized shortcuts. */
#define _Py_atomic_store(ATOMIC_VAL, NEW_VAL) \
    _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, _Py_memory_order_seq_cst)
#define _Py_atomic_load(ATOMIC_VAL) \
    _Py_atomic_load_explicit(ATOMIC_VAL, _Py_memory_order_seq_cst)

/* Python-local extensions */

#define _Py_atomic_store_relaxed(ATOMIC_VAL, NEW_VAL) \
    _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, _Py_memory_order_relaxed)
#define _Py_atomic_load_relaxed(ATOMIC_VAL) \
    _Py_atomic_load_explicit(ATOMIC_VAL, _Py_memory_order_relaxed)
#endif  /* Py_BUILD_CORE */
#endif  /* Py_ATOMIC_H */