cpython/Include/cpython/pyatomic_std.h
Sam Gross 1d3cf79a50
gh-121368: Fix seq lock memory ordering in _PyType_Lookup (#121388)
The `_PySeqLock_EndRead` function needs an acquire fence to ensure that
the load of the sequence happens after any loads within the read side
critical section. The missing fence can trigger bugs on macOS arm64.

Additionally, we need a release fence in `_PySeqLock_LockWrite` to
ensure that the sequence update is visible before any modifications to
the cache entry.
2024-07-08 14:52:07 -04:00

976 lines
24 KiB
C

// This is the implementation of Python atomic operations using C++11 or C11
// atomics. Note that the pyatomic_gcc.h implementation is preferred for GCC
// compatible compilers, even if they support C++11 atomics.
#ifndef Py_ATOMIC_STD_H
# error "this header file must not be included directly"
#endif
#ifdef __cplusplus
extern "C++" {
# include <atomic>
}
# define _Py_USING_STD using namespace std
# define _Atomic(tp) atomic<tp>
#else
# define _Py_USING_STD
# include <stdatomic.h>
#endif
// --- _Py_atomic_add --------------------------------------------------------
static inline int
_Py_atomic_add_int(int *obj, int value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(int)*)obj, value);
}
static inline int8_t
_Py_atomic_add_int8(int8_t *obj, int8_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(int8_t)*)obj, value);
}
static inline int16_t
_Py_atomic_add_int16(int16_t *obj, int16_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(int16_t)*)obj, value);
}
static inline int32_t
_Py_atomic_add_int32(int32_t *obj, int32_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(int32_t)*)obj, value);
}
static inline int64_t
_Py_atomic_add_int64(int64_t *obj, int64_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(int64_t)*)obj, value);
}
static inline intptr_t
_Py_atomic_add_intptr(intptr_t *obj, intptr_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(intptr_t)*)obj, value);
}
static inline unsigned int
_Py_atomic_add_uint(unsigned int *obj, unsigned int value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(unsigned int)*)obj, value);
}
static inline uint8_t
_Py_atomic_add_uint8(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(uint8_t)*)obj, value);
}
static inline uint16_t
_Py_atomic_add_uint16(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(uint16_t)*)obj, value);
}
static inline uint32_t
_Py_atomic_add_uint32(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(uint32_t)*)obj, value);
}
static inline uint64_t
_Py_atomic_add_uint64(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(uint64_t)*)obj, value);
}
static inline uintptr_t
_Py_atomic_add_uintptr(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(uintptr_t)*)obj, value);
}
static inline Py_ssize_t
_Py_atomic_add_ssize(Py_ssize_t *obj, Py_ssize_t value)
{
_Py_USING_STD;
return atomic_fetch_add((_Atomic(Py_ssize_t)*)obj, value);
}
// --- _Py_atomic_compare_exchange -------------------------------------------
static inline int
_Py_atomic_compare_exchange_int(int *obj, int *expected, int desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(int)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_int8(int8_t *obj, int8_t *expected, int8_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(int8_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_int16(int16_t *obj, int16_t *expected, int16_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(int16_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_int32(int32_t *obj, int32_t *expected, int32_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(int32_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_int64(int64_t *obj, int64_t *expected, int64_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(int64_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_intptr(intptr_t *obj, intptr_t *expected, intptr_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(intptr_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uint(unsigned int *obj, unsigned int *expected, unsigned int desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(unsigned int)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uint8(uint8_t *obj, uint8_t *expected, uint8_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(uint8_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uint16(uint16_t *obj, uint16_t *expected, uint16_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(uint16_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uint32(uint32_t *obj, uint32_t *expected, uint32_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(uint32_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uint64(uint64_t *obj, uint64_t *expected, uint64_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(uint64_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_uintptr(uintptr_t *obj, uintptr_t *expected, uintptr_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(uintptr_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_ssize(Py_ssize_t *obj, Py_ssize_t *expected, Py_ssize_t desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(Py_ssize_t)*)obj,
expected, desired);
}
static inline int
_Py_atomic_compare_exchange_ptr(void *obj, void *expected, void *desired)
{
_Py_USING_STD;
return atomic_compare_exchange_strong((_Atomic(void *)*)obj,
(void **)expected, desired);
}
// --- _Py_atomic_exchange ---------------------------------------------------
static inline int
_Py_atomic_exchange_int(int *obj, int value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(int)*)obj, value);
}
static inline int8_t
_Py_atomic_exchange_int8(int8_t *obj, int8_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(int8_t)*)obj, value);
}
static inline int16_t
_Py_atomic_exchange_int16(int16_t *obj, int16_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(int16_t)*)obj, value);
}
static inline int32_t
_Py_atomic_exchange_int32(int32_t *obj, int32_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(int32_t)*)obj, value);
}
static inline int64_t
_Py_atomic_exchange_int64(int64_t *obj, int64_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(int64_t)*)obj, value);
}
static inline intptr_t
_Py_atomic_exchange_intptr(intptr_t *obj, intptr_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(intptr_t)*)obj, value);
}
static inline unsigned int
_Py_atomic_exchange_uint(unsigned int *obj, unsigned int value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(unsigned int)*)obj, value);
}
static inline uint8_t
_Py_atomic_exchange_uint8(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(uint8_t)*)obj, value);
}
static inline uint16_t
_Py_atomic_exchange_uint16(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(uint16_t)*)obj, value);
}
static inline uint32_t
_Py_atomic_exchange_uint32(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(uint32_t)*)obj, value);
}
static inline uint64_t
_Py_atomic_exchange_uint64(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(uint64_t)*)obj, value);
}
static inline uintptr_t
_Py_atomic_exchange_uintptr(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(uintptr_t)*)obj, value);
}
static inline Py_ssize_t
_Py_atomic_exchange_ssize(Py_ssize_t *obj, Py_ssize_t value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(Py_ssize_t)*)obj, value);
}
static inline void*
_Py_atomic_exchange_ptr(void *obj, void *value)
{
_Py_USING_STD;
return atomic_exchange((_Atomic(void *)*)obj, value);
}
// --- _Py_atomic_and --------------------------------------------------------
static inline uint8_t
_Py_atomic_and_uint8(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
return atomic_fetch_and((_Atomic(uint8_t)*)obj, value);
}
static inline uint16_t
_Py_atomic_and_uint16(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
return atomic_fetch_and((_Atomic(uint16_t)*)obj, value);
}
static inline uint32_t
_Py_atomic_and_uint32(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
return atomic_fetch_and((_Atomic(uint32_t)*)obj, value);
}
static inline uint64_t
_Py_atomic_and_uint64(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
return atomic_fetch_and((_Atomic(uint64_t)*)obj, value);
}
static inline uintptr_t
_Py_atomic_and_uintptr(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
return atomic_fetch_and((_Atomic(uintptr_t)*)obj, value);
}
// --- _Py_atomic_or ---------------------------------------------------------
static inline uint8_t
_Py_atomic_or_uint8(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
return atomic_fetch_or((_Atomic(uint8_t)*)obj, value);
}
static inline uint16_t
_Py_atomic_or_uint16(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
return atomic_fetch_or((_Atomic(uint16_t)*)obj, value);
}
static inline uint32_t
_Py_atomic_or_uint32(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
return atomic_fetch_or((_Atomic(uint32_t)*)obj, value);
}
static inline uint64_t
_Py_atomic_or_uint64(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
return atomic_fetch_or((_Atomic(uint64_t)*)obj, value);
}
static inline uintptr_t
_Py_atomic_or_uintptr(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
return atomic_fetch_or((_Atomic(uintptr_t)*)obj, value);
}
// --- _Py_atomic_load -------------------------------------------------------
static inline int
_Py_atomic_load_int(const int *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(int)*)obj);
}
static inline int8_t
_Py_atomic_load_int8(const int8_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(int8_t)*)obj);
}
static inline int16_t
_Py_atomic_load_int16(const int16_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(int16_t)*)obj);
}
static inline int32_t
_Py_atomic_load_int32(const int32_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(int32_t)*)obj);
}
static inline int64_t
_Py_atomic_load_int64(const int64_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(int64_t)*)obj);
}
static inline intptr_t
_Py_atomic_load_intptr(const intptr_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(intptr_t)*)obj);
}
static inline uint8_t
_Py_atomic_load_uint8(const uint8_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(uint8_t)*)obj);
}
static inline uint16_t
_Py_atomic_load_uint16(const uint16_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(uint32_t)*)obj);
}
static inline uint32_t
_Py_atomic_load_uint32(const uint32_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(uint32_t)*)obj);
}
static inline uint64_t
_Py_atomic_load_uint64(const uint64_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(uint64_t)*)obj);
}
static inline uintptr_t
_Py_atomic_load_uintptr(const uintptr_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(uintptr_t)*)obj);
}
static inline unsigned int
_Py_atomic_load_uint(const unsigned int *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(unsigned int)*)obj);
}
static inline Py_ssize_t
_Py_atomic_load_ssize(const Py_ssize_t *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(Py_ssize_t)*)obj);
}
static inline void*
_Py_atomic_load_ptr(const void *obj)
{
_Py_USING_STD;
return atomic_load((const _Atomic(void*)*)obj);
}
// --- _Py_atomic_load_relaxed -----------------------------------------------
static inline int
_Py_atomic_load_int_relaxed(const int *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int)*)obj,
memory_order_relaxed);
}
static inline int8_t
_Py_atomic_load_int8_relaxed(const int8_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int8_t)*)obj,
memory_order_relaxed);
}
static inline int16_t
_Py_atomic_load_int16_relaxed(const int16_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int16_t)*)obj,
memory_order_relaxed);
}
static inline int32_t
_Py_atomic_load_int32_relaxed(const int32_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int32_t)*)obj,
memory_order_relaxed);
}
static inline int64_t
_Py_atomic_load_int64_relaxed(const int64_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int64_t)*)obj,
memory_order_relaxed);
}
static inline intptr_t
_Py_atomic_load_intptr_relaxed(const intptr_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(intptr_t)*)obj,
memory_order_relaxed);
}
static inline uint8_t
_Py_atomic_load_uint8_relaxed(const uint8_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint8_t)*)obj,
memory_order_relaxed);
}
static inline uint16_t
_Py_atomic_load_uint16_relaxed(const uint16_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint16_t)*)obj,
memory_order_relaxed);
}
static inline uint32_t
_Py_atomic_load_uint32_relaxed(const uint32_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint32_t)*)obj,
memory_order_relaxed);
}
static inline uint64_t
_Py_atomic_load_uint64_relaxed(const uint64_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint64_t)*)obj,
memory_order_relaxed);
}
static inline uintptr_t
_Py_atomic_load_uintptr_relaxed(const uintptr_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uintptr_t)*)obj,
memory_order_relaxed);
}
static inline unsigned int
_Py_atomic_load_uint_relaxed(const unsigned int *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(unsigned int)*)obj,
memory_order_relaxed);
}
static inline Py_ssize_t
_Py_atomic_load_ssize_relaxed(const Py_ssize_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(Py_ssize_t)*)obj,
memory_order_relaxed);
}
static inline void*
_Py_atomic_load_ptr_relaxed(const void *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(void*)*)obj,
memory_order_relaxed);
}
static inline unsigned long long
_Py_atomic_load_ullong_relaxed(const unsigned long long *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(unsigned long long)*)obj,
memory_order_relaxed);
}
// --- _Py_atomic_store ------------------------------------------------------
static inline void
_Py_atomic_store_int(int *obj, int value)
{
_Py_USING_STD;
atomic_store((_Atomic(int)*)obj, value);
}
static inline void
_Py_atomic_store_int8(int8_t *obj, int8_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(int8_t)*)obj, value);
}
static inline void
_Py_atomic_store_int16(int16_t *obj, int16_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(int16_t)*)obj, value);
}
static inline void
_Py_atomic_store_int32(int32_t *obj, int32_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(int32_t)*)obj, value);
}
static inline void
_Py_atomic_store_int64(int64_t *obj, int64_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(int64_t)*)obj, value);
}
static inline void
_Py_atomic_store_intptr(intptr_t *obj, intptr_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(intptr_t)*)obj, value);
}
static inline void
_Py_atomic_store_uint8(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(uint8_t)*)obj, value);
}
static inline void
_Py_atomic_store_uint16(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(uint16_t)*)obj, value);
}
static inline void
_Py_atomic_store_uint32(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(uint32_t)*)obj, value);
}
static inline void
_Py_atomic_store_uint64(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(uint64_t)*)obj, value);
}
static inline void
_Py_atomic_store_uintptr(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(uintptr_t)*)obj, value);
}
static inline void
_Py_atomic_store_uint(unsigned int *obj, unsigned int value)
{
_Py_USING_STD;
atomic_store((_Atomic(unsigned int)*)obj, value);
}
static inline void
_Py_atomic_store_ptr(void *obj, void *value)
{
_Py_USING_STD;
atomic_store((_Atomic(void*)*)obj, value);
}
static inline void
_Py_atomic_store_ssize(Py_ssize_t *obj, Py_ssize_t value)
{
_Py_USING_STD;
atomic_store((_Atomic(Py_ssize_t)*)obj, value);
}
// --- _Py_atomic_store_relaxed ----------------------------------------------
static inline void
_Py_atomic_store_int_relaxed(int *obj, int value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_int8_relaxed(int8_t *obj, int8_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int8_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_int16_relaxed(int16_t *obj, int16_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int16_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_int32_relaxed(int32_t *obj, int32_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int32_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_int64_relaxed(int64_t *obj, int64_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int64_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_intptr_relaxed(intptr_t *obj, intptr_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(intptr_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uint8_relaxed(uint8_t *obj, uint8_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint8_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uint16_relaxed(uint16_t *obj, uint16_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint16_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uint32_relaxed(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint32_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uint64_relaxed(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint64_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uintptr_relaxed(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uintptr_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_uint_relaxed(unsigned int *obj, unsigned int value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(unsigned int)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_ptr_relaxed(void *obj, void *value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(void*)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_ssize_relaxed(Py_ssize_t *obj, Py_ssize_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(Py_ssize_t)*)obj, value,
memory_order_relaxed);
}
static inline void
_Py_atomic_store_ullong_relaxed(unsigned long long *obj,
unsigned long long value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(unsigned long long)*)obj, value,
memory_order_relaxed);
}
// --- _Py_atomic_load_ptr_acquire / _Py_atomic_store_ptr_release ------------
static inline void *
_Py_atomic_load_ptr_acquire(const void *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(void*)*)obj,
memory_order_acquire);
}
static inline uintptr_t
_Py_atomic_load_uintptr_acquire(const uintptr_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uintptr_t)*)obj,
memory_order_acquire);
}
static inline void
_Py_atomic_store_ptr_release(void *obj, void *value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(void*)*)obj, value,
memory_order_release);
}
static inline void
_Py_atomic_store_uintptr_release(uintptr_t *obj, uintptr_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uintptr_t)*)obj, value,
memory_order_release);
}
static inline void
_Py_atomic_store_int_release(int *obj, int value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(int)*)obj, value,
memory_order_release);
}
static inline void
_Py_atomic_store_ssize_release(Py_ssize_t *obj, Py_ssize_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(Py_ssize_t)*)obj, value,
memory_order_release);
}
static inline int
_Py_atomic_load_int_acquire(const int *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(int)*)obj,
memory_order_acquire);
}
static inline void
_Py_atomic_store_uint32_release(uint32_t *obj, uint32_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint32_t)*)obj, value,
memory_order_release);
}
static inline void
_Py_atomic_store_uint64_release(uint64_t *obj, uint64_t value)
{
_Py_USING_STD;
atomic_store_explicit((_Atomic(uint64_t)*)obj, value,
memory_order_release);
}
static inline uint64_t
_Py_atomic_load_uint64_acquire(const uint64_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint64_t)*)obj,
memory_order_acquire);
}
static inline uint32_t
_Py_atomic_load_uint32_acquire(const uint32_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(uint32_t)*)obj,
memory_order_acquire);
}
static inline Py_ssize_t
_Py_atomic_load_ssize_acquire(const Py_ssize_t *obj)
{
_Py_USING_STD;
return atomic_load_explicit((const _Atomic(Py_ssize_t)*)obj,
memory_order_acquire);
}
// --- _Py_atomic_fence ------------------------------------------------------
static inline void
_Py_atomic_fence_seq_cst(void)
{
_Py_USING_STD;
atomic_thread_fence(memory_order_seq_cst);
}
static inline void
_Py_atomic_fence_acquire(void)
{
_Py_USING_STD;
atomic_thread_fence(memory_order_acquire);
}
static inline void
_Py_atomic_fence_release(void)
{
_Py_USING_STD;
atomic_thread_fence(memory_order_release);
}