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Include/internal/pycore_pyatomic_ft_wrappers.h
213 строк
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Alper
gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233)
11 май 2026, 18:39
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11 май 2026, 18:39
8a48959
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// This header file provides wrappers around the atomic operations found in // `pyatomic.h` that are only atomic in free-threaded builds. // // These are intended to be used in places where atomics are required in // free-threaded builds, but not in the default build, and we don't want to // introduce the potential performance overhead of an atomic operation in the // default build. // // All usages of these macros should be replaced with unconditionally atomic or // non-atomic versions, and this file should be removed, once the dust settles // on free threading. #ifndef Py_ATOMIC_FT_WRAPPERS_H #define Py_ATOMIC_FT_WRAPPERS_H #ifdef __cplusplus extern "C" { #endif #ifndef Py_BUILD_CORE #error "this header requires Py_BUILD_CORE define" #endif #ifdef Py_GIL_DISABLED #define FT_ATOMIC_LOAD_PTR(value) _Py_atomic_load_ptr(&value) #define FT_ATOMIC_STORE_PTR(value, new_value) _Py_atomic_store_ptr(&value, new_value) #define FT_ATOMIC_LOAD_SSIZE(value) _Py_atomic_load_ssize(&value) #define FT_ATOMIC_LOAD_SSIZE_ACQUIRE(value) \ _Py_atomic_load_ssize_acquire(&value) #define FT_ATOMIC_LOAD_SSIZE_RELAXED(value) \ _Py_atomic_load_ssize_relaxed(&value) #define FT_ATOMIC_STORE_PTR(value, new_value) \ _Py_atomic_store_ptr(&value, new_value) #define FT_ATOMIC_LOAD_PTR_ACQUIRE(value) \ _Py_atomic_load_ptr_acquire(&value) #define FT_ATOMIC_LOAD_PTR_CONSUME(value) \ _Py_atomic_load_ptr_consume(&value) #define FT_ATOMIC_LOAD_UINTPTR_ACQUIRE(value) \ _Py_atomic_load_uintptr_acquire(&value) #define FT_ATOMIC_LOAD_PTR_RELAXED(value) \ _Py_atomic_load_ptr_relaxed(&value) #define FT_ATOMIC_LOAD_UINT8(value) \ _Py_atomic_load_uint8(&value) #define FT_ATOMIC_STORE_UINT8(value, new_value) \ _Py_atomic_store_uint8(&value, new_value) #define FT_ATOMIC_LOAD_INT8_RELAXED(value) \ _Py_atomic_load_int8_relaxed(&value) #define FT_ATOMIC_LOAD_UINT8_RELAXED(value) \ _Py_atomic_load_uint8_relaxed(&value) #define FT_ATOMIC_LOAD_UINT16_RELAXED(value) \ _Py_atomic_load_uint16_relaxed(&value) #define FT_ATOMIC_LOAD_UINT32_RELAXED(value) \ _Py_atomic_load_uint32_relaxed(&value) #define FT_ATOMIC_LOAD_UINT64_ACQUIRE(value) \ _Py_atomic_load_uint64_acquire(&value) #define FT_ATOMIC_LOAD_UINT64_RELAXED(value) \ _Py_atomic_load_uint64_relaxed(&value) #define FT_ATOMIC_LOAD_ULONG_RELAXED(value) \ _Py_atomic_load_ulong_relaxed(&value) #define FT_ATOMIC_STORE_PTR_RELAXED(value, new_value) \ _Py_atomic_store_ptr_relaxed(&value, new_value) #define FT_ATOMIC_STORE_PTR_RELEASE(value, new_value) \ _Py_atomic_store_ptr_release(&value, new_value) #define FT_ATOMIC_STORE_UINTPTR_RELEASE(value, new_value) \ _Py_atomic_store_uintptr_release(&value, new_value) #define FT_ATOMIC_STORE_INT8_RELAXED(value, new_value) \ _Py_atomic_store_int8_relaxed(&value, new_value) #define FT_ATOMIC_STORE_INT8_RELEASE(value, new_value) \ _Py_atomic_store_int8_release(&value, new_value) #define FT_ATOMIC_STORE_SSIZE_RELAXED(value, new_value) \ _Py_atomic_store_ssize_relaxed(&value, new_value) #define FT_ATOMIC_STORE_SSIZE_RELEASE(value, new_value) \ _Py_atomic_store_ssize_release(&value, new_value) #define FT_ATOMIC_STORE_UINT8_RELAXED(value, new_value) \ _Py_atomic_store_uint8_relaxed(&value, new_value) #define FT_ATOMIC_STORE_UINT16_RELAXED(value, new_value) \ _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_AND_UINT64(value, new_value) \ (void)_Py_atomic_and_uint64(&value, new_value) #define FT_ATOMIC_OR_UINT64(value, new_value) \ (void)_Py_atomic_or_uint64(&value, new_value) #define FT_ATOMIC_ADD_UINT64(value, new_value) \ (void)_Py_atomic_add_uint64(&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_RELAXED(value, new_value) \ _Py_atomic_store_uchar_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_UCHAR_RELAXED(value) \ _Py_atomic_load_uchar_relaxed(&value) #define FT_ATOMIC_STORE_SHORT_RELAXED(value, new_value) \ _Py_atomic_store_short_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_SHORT_RELAXED(value) \ _Py_atomic_load_short_relaxed(&value) #define FT_ATOMIC_STORE_USHORT_RELAXED(value, new_value) \ _Py_atomic_store_ushort_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_USHORT_RELAXED(value) \ _Py_atomic_load_ushort_relaxed(&value) #define FT_ATOMIC_LOAD_INT(value) \ _Py_atomic_load_int(&value) #define FT_ATOMIC_STORE_INT(value, new_value) \ _Py_atomic_store_int(&value, new_value) #define FT_ATOMIC_STORE_INT_RELAXED(value, new_value) \ _Py_atomic_store_int_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_INT_RELAXED(value) \ _Py_atomic_load_int_relaxed(&value) #define FT_ATOMIC_LOAD_UINT(value) \ _Py_atomic_load_uint(&value) #define FT_ATOMIC_STORE_UINT_RELAXED(value, new_value) \ _Py_atomic_store_uint_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_UINT_RELAXED(value) \ _Py_atomic_load_uint_relaxed(&value) #define FT_ATOMIC_STORE_LONG_RELAXED(value, new_value) \ _Py_atomic_store_long_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_LONG_RELAXED(value) \ _Py_atomic_load_long_relaxed(&value) #define FT_ATOMIC_STORE_ULONG_RELAXED(value, new_value) \ _Py_atomic_store_ulong_relaxed(&value, new_value) #define FT_ATOMIC_STORE_SSIZE_RELAXED(value, new_value) \ _Py_atomic_store_ssize_relaxed(&value, new_value) #define FT_ATOMIC_STORE_FLOAT_RELAXED(value, new_value) \ _Py_atomic_store_float_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_FLOAT_RELAXED(value) \ _Py_atomic_load_float_relaxed(&value) #define FT_ATOMIC_STORE_DOUBLE_RELAXED(value, new_value) \ _Py_atomic_store_double_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_DOUBLE_RELAXED(value) \ _Py_atomic_load_double_relaxed(&value) #define FT_ATOMIC_STORE_LLONG_RELAXED(value, new_value) \ _Py_atomic_store_llong_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_LLONG_RELAXED(value) \ _Py_atomic_load_llong_relaxed(&value) #define FT_ATOMIC_STORE_ULLONG_RELAXED(value, new_value) \ _Py_atomic_store_ullong_relaxed(&value, new_value) #define FT_ATOMIC_LOAD_ULLONG_RELAXED(value) \ _Py_atomic_load_ullong_relaxed(&value) #define FT_ATOMIC_ADD_SSIZE(value, new_value) \ (void)_Py_atomic_add_ssize(&value, new_value) #define FT_MUTEX_LOCK(lock) PyMutex_Lock(lock) #define FT_MUTEX_LOCK_FLAGS(lock, flags) PyMutex_LockFlags(lock, flags) #define FT_MUTEX_UNLOCK(lock) PyMutex_Unlock(lock) #else #define FT_ATOMIC_LOAD_PTR(value) value #define FT_ATOMIC_STORE_PTR(value, new_value) value = new_value #define FT_ATOMIC_LOAD_SSIZE(value) value #define FT_ATOMIC_LOAD_SSIZE_ACQUIRE(value) value #define FT_ATOMIC_LOAD_SSIZE_RELAXED(value) value #define FT_ATOMIC_LOAD_PTR_ACQUIRE(value) value #define FT_ATOMIC_LOAD_PTR_CONSUME(value) value #define FT_ATOMIC_LOAD_UINTPTR_ACQUIRE(value) value #define FT_ATOMIC_LOAD_PTR_RELAXED(value) value #define FT_ATOMIC_LOAD_UINT8(value) value #define FT_ATOMIC_STORE_UINT8(value, new_value) value = new_value #define FT_ATOMIC_LOAD_INT8_RELAXED(value) value #define FT_ATOMIC_LOAD_UINT8_RELAXED(value) value #define FT_ATOMIC_LOAD_UINT16_RELAXED(value) value #define FT_ATOMIC_LOAD_UINT32_RELAXED(value) value #define FT_ATOMIC_LOAD_UINT64_ACQUIRE(value) value #define FT_ATOMIC_LOAD_UINT64_RELAXED(value) value #define FT_ATOMIC_LOAD_ULONG_RELAXED(value) value #define FT_ATOMIC_STORE_PTR_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_PTR_RELEASE(value, new_value) value = new_value #define FT_ATOMIC_STORE_UINTPTR_RELEASE(value, new_value) value = new_value #define FT_ATOMIC_STORE_INT8_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_INT8_RELEASE(value, new_value) value = new_value #define FT_ATOMIC_STORE_SSIZE_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_SSIZE_RELEASE(value, new_value) value = new_value #define FT_ATOMIC_STORE_UINT8_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_UINT16_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_UINT32_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_AND_UINT64(value, new_value) (void)(value &= new_value) #define FT_ATOMIC_OR_UINT64(value, new_value) (void)(value |= new_value) #define FT_ATOMIC_ADD_UINT64(value, new_value) (void)(value += new_value) #define FT_ATOMIC_LOAD_CHAR_RELAXED(value) value #define FT_ATOMIC_STORE_CHAR_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_UCHAR_RELAXED(value) value #define FT_ATOMIC_STORE_UCHAR_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_SHORT_RELAXED(value) value #define FT_ATOMIC_STORE_SHORT_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_USHORT_RELAXED(value) value #define FT_ATOMIC_STORE_USHORT_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_INT(value) value #define FT_ATOMIC_STORE_INT(value, new_value) value = new_value #define FT_ATOMIC_LOAD_INT_RELAXED(value) value #define FT_ATOMIC_STORE_INT_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_UINT(value) value #define FT_ATOMIC_LOAD_UINT_RELAXED(value) value #define FT_ATOMIC_STORE_UINT_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_LONG_RELAXED(value) value #define FT_ATOMIC_STORE_LONG_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_ULONG_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_STORE_SSIZE_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_FLOAT_RELAXED(value) value #define FT_ATOMIC_STORE_FLOAT_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_DOUBLE_RELAXED(value) value #define FT_ATOMIC_STORE_DOUBLE_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_LLONG_RELAXED(value) value #define FT_ATOMIC_STORE_LLONG_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_LOAD_ULLONG_RELAXED(value) value #define FT_ATOMIC_STORE_ULLONG_RELAXED(value, new_value) value = new_value #define FT_ATOMIC_ADD_SSIZE(value, new_value) (void)(value += new_value) #define FT_MUTEX_LOCK(lock) do {} while (0) #define FT_MUTEX_LOCK_FLAGS(lock, flags) do {} while (0) #define FT_MUTEX_UNLOCK(lock) do {} while (0) #endif #ifdef __cplusplus } #endif #endif /* !Py_ATOMIC_FT_WRAPPERS_H */