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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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||||
* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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||||
* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef COMPAT_ATOMICS_WIN32_STDATOMIC_H
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#define COMPAT_ATOMICS_WIN32_STDATOMIC_H
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#define WIN32_LEAN_AND_MEAN
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#include <stddef.h>
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#include <stdint.h>
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#include <windows.h>
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#ifdef _MSC_VER
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#define cpu_relax() _mm_pause()
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#else
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#define cpu_relax() __asm__ __volatile__ ("pause")
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#endif
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#define ATOMIC_FLAG_INIT 0
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#define ATOMIC_VAR_INIT(value) (value)
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#define atomic_init(obj, value) \
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do \
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{ \
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*(obj) = (value); \
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} while (0)
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#define kill_dependency(y) ((void)0)
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// memory order policies - we use "sequentially consistent" by default
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#define memory_order_relaxed 0
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#define memory_order_consume 1
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#define memory_order_acquire 2
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#define memory_order_release 3
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#define memory_order_acq_rel 4
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#define memory_order_seq_cst 5
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#ifdef _MSC_VER
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#define atomic_thread_fence(order) \
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do { \
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switch (order) { \
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case memory_order_release: \
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_WriteBarrier(); \
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_ReadWriteBarrier(); \
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break; \
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case memory_order_acquire: \
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_ReadBarrier(); \
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_ReadWriteBarrier(); \
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break; \
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case memory_order_acq_rel: \
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_ReadBarrier(); \
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_WriteBarrier(); \
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_ReadWriteBarrier(); \
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break; \
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case memory_order_seq_cst: \
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MemoryBarrier(); \
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break; \
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default: /* relaxed, consume */ \
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break; \
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} \
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} while (0)
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#else
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#define atomic_thread_fence(order) do { \
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switch (order) { \
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case memory_order_relaxed: \
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break; \
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case memory_order_acquire: \
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case memory_order_consume: \
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case memory_order_release: \
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case memory_order_acq_rel: \
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__asm__ __volatile__ ("" : : : "memory"); \
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break; \
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case memory_order_seq_cst: \
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__asm__ __volatile__ ("mfence" : : : "memory"); \
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break; \
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default: \
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__asm__ __volatile__ ("mfence" : : : "memory"); \
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break; \
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} \
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} while (0)
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#endif
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#define atomic_signal_fence(order) \
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((void)0)
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#define atomic_is_lock_free(obj) 0
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typedef intptr_t atomic_flag;
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typedef _Atomic bool atomic_bool;
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typedef _Atomic char atomic_char;
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typedef _Atomic signed char atomic_schar;
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typedef _Atomic unsigned char atomic_uchar;
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typedef _Atomic short atomic_short;
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typedef _Atomic unsigned short atomic_ushort;
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typedef _Atomic int atomic_int;
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typedef _Atomic unsigned int atomic_uint;
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typedef _Atomic long atomic_long;
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typedef _Atomic unsigned long atomic_ulong;
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typedef _Atomic long long atomic_llong;
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typedef _Atomic unsigned long long atomic_ullong;
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typedef intptr_t atomic_wchar_t;
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typedef intptr_t atomic_int_least8_t;
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typedef intptr_t atomic_uint_least8_t;
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typedef intptr_t atomic_int_least16_t;
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typedef intptr_t atomic_uint_least16_t;
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typedef intptr_t atomic_int_least32_t;
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typedef intptr_t atomic_uint_least32_t;
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typedef intptr_t atomic_int_least64_t;
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typedef intptr_t atomic_uint_least64_t;
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typedef intptr_t atomic_int_fast8_t;
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typedef intptr_t atomic_uint_fast8_t;
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typedef intptr_t atomic_int_fast16_t;
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typedef intptr_t atomic_uint_fast16_t;
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typedef intptr_t atomic_int_fast32_t;
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typedef intptr_t atomic_uint_fast32_t;
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typedef intptr_t atomic_int_fast64_t;
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typedef intptr_t atomic_uint_fast64_t;
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typedef _Atomic intptr_t atomic_intptr_t;
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typedef _Atomic uintptr_t atomic_uintptr_t;
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typedef _Atomic size_t atomic_size_t;
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typedef intptr_t atomic_ptrdiff_t;
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typedef intptr_t atomic_intmax_t;
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typedef intptr_t atomic_uintmax_t;
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#ifdef __TINYC__
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/*
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For TCC it is missing the x64 version of _InterlockedExchangeAdd64 so we
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fake it (works the same) with InterlockedCompareExchange64 until it
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succeeds
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*/
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__CRT_INLINE LONGLONG _InterlockedExchangeAdd64(LONGLONG volatile *Addend, LONGLONG Value)
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{
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LONGLONG Old;
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do
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{
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Old = *Addend;
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} while (InterlockedCompareExchange64(Addend, Old + Value, Old) != Old);
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return Old;
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}
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__CRT_INLINE LONG _InterlockedExchangeAdd(LONG volatile *Addend, LONG Value)
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{
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LONG Old;
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do
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{
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Old = *Addend;
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} while (InterlockedCompareExchange(Addend, Old + Value, Old) != Old);
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return Old;
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}
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#ifndef InterlockedIncrement64
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#define InterlockedIncrement64 _InterlockedExchangeAdd64
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#endif
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#endif
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#define atomic_store(object, desired) \
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do \
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{ \
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MemoryBarrier(); \
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*(object) = (desired); \
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MemoryBarrier(); \
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} while (0)
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#define atomic_store_explicit(object, desired, order) \
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atomic_store(object, desired)
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#define atomic_load(object) \
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(MemoryBarrier(), *(object))
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#define atomic_load_explicit(object, order) \
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atomic_load(object)
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#define atomic_exchange(object, desired) \
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InterlockedExchangePointer(object, desired)
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#define atomic_exchange_explicit(object, desired, order) \
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atomic_exchange(object, desired)
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static inline int atomic_compare_exchange_strong(intptr_t volatile *object, intptr_t volatile *expected,
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intptr_t desired)
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{
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intptr_t old = *expected;
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*expected = (intptr_t)InterlockedCompareExchangePointer(
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(PVOID *)object, (PVOID)desired, (PVOID)old);
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return *expected == old;
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}
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#define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
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atomic_compare_exchange_strong(object, expected, desired)
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#define atomic_compare_exchange_weak(object, expected, desired) \
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atomic_compare_exchange_strong(object, expected, desired)
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#define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
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atomic_compare_exchange_weak(object, expected, desired)
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#ifdef _WIN64
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#define atomic_fetch_add(object, operand) \
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InterlockedExchangeAdd64(object, operand)
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#define atomic_fetch_sub(object, operand) \
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InterlockedExchangeAdd64(object, -(operand))
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#define atomic_fetch_or(object, operand) \
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InterlockedOr64(object, operand)
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#define atomic_fetch_xor(object, operand) \
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InterlockedXor64(object, operand)
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#define atomic_fetch_and(object, operand) \
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InterlockedAnd64(object, operand)
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#else
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#define atomic_fetch_add(object, operand) \
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InterlockedExchangeAdd(object, operand)
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#define atomic_fetch_sub(object, operand) \
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InterlockedExchangeAdd(object, -(operand))
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#define atomic_fetch_or(object, operand) \
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InterlockedOr(object, operand)
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#define atomic_fetch_xor(object, operand) \
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InterlockedXor(object, operand)
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#define atomic_fetch_and(object, operand) \
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InterlockedAnd(object, operand)
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#endif /* _WIN64 */
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/* specialized versions with explicit object size */
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#define atomic_load_ptr atomic_load
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#define atomic_store_ptr atomic_store
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#define atomic_compare_exchange_weak_ptr atomic_compare_exchange_weak
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#define atomic_compare_exchange_strong_ptr atomic_compare_exchange_strong
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#define atomic_exchange_ptr atomic_exchange
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#define atomic_fetch_add_ptr atomic_fetch_add
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#define atomic_fetch_sub_ptr atomic_fetch_sub
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#define atomic_fetch_and_ptr atomic_fetch_and
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#define atomic_fetch_or_ptr atomic_fetch_or
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#define atomic_fetch_xor_ptr atomic_fetch_xor
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static inline void atomic_store_u64(unsigned long long volatile * object, unsigned long long desired) {
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do {
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MemoryBarrier();
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*(object) = (desired);
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MemoryBarrier();
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} while (0);
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||||
}
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static inline unsigned long long atomic_load_u64(unsigned long long volatile * object) {
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return (MemoryBarrier(), *(object));
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}
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#define atomic_exchange_u64(object, desired) \
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InterlockedExchange64(object, desired)
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static inline int atomic_compare_exchange_strong_u64(unsigned long long volatile * object, unsigned long long volatile * expected,
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unsigned long long desired)
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{
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unsigned long long old = *expected;
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*expected = InterlockedCompareExchange64(object, desired, old);
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return *expected == old;
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}
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#define atomic_compare_exchange_weak_u64(object, expected, desired) \
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atomic_compare_exchange_strong_u64(object, expected, desired)
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#define atomic_fetch_add_u64(object, operand) \
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InterlockedExchangeAdd64(object, operand)
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#define atomic_fetch_sub_u64(object, operand) \
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InterlockedExchangeAdd64(object, -(operand))
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#define atomic_fetch_or_u64(object, operand) \
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InterlockedOr64(object, operand)
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#define atomic_fetch_xor_u64(object, operand) \
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InterlockedXor64(object, operand)
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#define atomic_fetch_and_u64(object, operand) \
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InterlockedAnd64(object, operand)
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static inline void atomic_store_u32(unsigned volatile * object, unsigned desired) {
|
||||
do {
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||||
MemoryBarrier();
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*(object) = (desired);
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||||
MemoryBarrier();
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||||
} while (0);
|
||||
}
|
||||
|
||||
static inline unsigned atomic_load_u32(unsigned volatile * object) {
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return (MemoryBarrier(), *(object));
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||||
}
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#define atomic_exchange_u32(object, desired) \
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InterlockedExchange(object, desired)
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||||
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static inline int atomic_compare_exchange_strong_u32(unsigned volatile * object, unsigned volatile * expected,
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unsigned desired)
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||||
{
|
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unsigned old = *expected;
|
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*expected = InterlockedCompareExchange((void *)object, desired, old);
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return *expected == old;
|
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}
|
||||
|
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#define atomic_compare_exchange_weak_u32(object, expected, desired) \
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atomic_compare_exchange_strong_u32(object, expected, desired)
|
||||
|
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#define atomic_fetch_add_u32(object, operand) \
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InterlockedExchangeAdd(object, operand)
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|
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#define atomic_fetch_sub_u32(object, operand) \
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InterlockedExchangeAdd(object, -(operand))
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|
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#define atomic_fetch_or_u32(object, operand) \
|
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InterlockedOr(object, operand)
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||||
|
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#define atomic_fetch_xor_u32(object, operand) \
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InterlockedXor(object, operand)
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|
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#define atomic_fetch_and_u32(object, operand) \
|
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InterlockedAnd(object, operand)
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|
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#ifdef _MSC_VER
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|
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#define InterlockedExchangeAdd16 _InterlockedExchangeAdd16
|
||||
|
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#else
|
||||
|
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#define InterlockedExchange16 ManualInterlockedExchange16
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#define InterlockedExchangeAdd16 ManualInterlockedExchangeAdd16
|
||||
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static inline uint16_t ManualInterlockedExchange16(volatile uint16_t* object, uint16_t desired) {
|
||||
__asm__ __volatile__ (
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||||
"xchgw %0, %1"
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||||
: "+r" (desired),
|
||||
"+m" (*object)
|
||||
:
|
||||
: "memory"
|
||||
);
|
||||
return desired;
|
||||
}
|
||||
|
||||
static inline unsigned short ManualInterlockedExchangeAdd16(unsigned short volatile* Addend, unsigned short Value) {
|
||||
__asm__ __volatile__ (
|
||||
"lock xaddw %w[value], %[mem]"
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||||
: [mem] "+m" (*Addend), [value] "+r" (Value)
|
||||
: : "memory"
|
||||
);
|
||||
return Value;
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void atomic_store_u16(unsigned short volatile * object, unsigned short desired) {
|
||||
do {
|
||||
MemoryBarrier();
|
||||
*(object) = (desired);
|
||||
MemoryBarrier();
|
||||
} while (0);
|
||||
}
|
||||
|
||||
static inline unsigned short atomic_load_u16(unsigned short volatile * object) {
|
||||
return (MemoryBarrier(), *(object));
|
||||
}
|
||||
|
||||
#define atomic_exchange_u16(object, desired) \
|
||||
InterlockedExchange16(object, desired)
|
||||
|
||||
static inline int atomic_compare_exchange_strong_u16(unsigned short volatile * object, unsigned short volatile * expected,
|
||||
unsigned short desired)
|
||||
{
|
||||
unsigned short old = *expected;
|
||||
*expected = InterlockedCompareExchange16(object, desired, old);
|
||||
return *expected == old;
|
||||
}
|
||||
|
||||
#define atomic_compare_exchange_weak_u16(object, expected, desired) \
|
||||
atomic_compare_exchange_strong_u16((void*)object, expected, desired)
|
||||
|
||||
#define atomic_fetch_add_u16(object, operand) \
|
||||
InterlockedExchangeAdd16(object, operand)
|
||||
|
||||
#define atomic_fetch_sub_u16(object, operand) \
|
||||
InterlockedExchangeAdd16(object, -(operand))
|
||||
|
||||
#define atomic_fetch_or_u16(object, operand) \
|
||||
InterlockedOr16(object, operand)
|
||||
|
||||
#define atomic_fetch_xor_u16(object, operand) \
|
||||
InterlockedXor16(object, operand)
|
||||
|
||||
#define atomic_fetch_and_u16(object, operand) \
|
||||
InterlockedAnd16(object, operand)
|
||||
|
||||
|
||||
#define atomic_fetch_add_explicit(object, operand, order) \
|
||||
atomic_fetch_add(object, operand)
|
||||
|
||||
#define atomic_fetch_sub_explicit(object, operand, order) \
|
||||
atomic_fetch_sub(object, operand)
|
||||
|
||||
#define atomic_fetch_or_explicit(object, operand, order) \
|
||||
atomic_fetch_or(object, operand)
|
||||
|
||||
#define atomic_fetch_xor_explicit(object, operand, order) \
|
||||
atomic_fetch_xor(object, operand)
|
||||
|
||||
#define atomic_fetch_and_explicit(object, operand, order) \
|
||||
atomic_fetch_and(object, operand)
|
||||
|
||||
#define atomic_flag_test_and_set(object) \
|
||||
atomic_exchange(object, 1)
|
||||
|
||||
#define atomic_flag_test_and_set_explicit(object, order) \
|
||||
atomic_flag_test_and_set(object)
|
||||
|
||||
#define atomic_flag_clear(object) \
|
||||
atomic_store(object, 0)
|
||||
|
||||
#define atomic_flag_clear_explicit(object, order) \
|
||||
atomic_flag_clear(object)
|
||||
|
||||
#ifdef _MSC_VER
|
||||
|
||||
#define InterlockedCompareExchange8 _InterlockedCompareExchange8
|
||||
#define InterlockedExchangeAdd8 _InterlockedExchangeAdd8
|
||||
#define InterlockedOr8 _InterlockedOr8
|
||||
#define InterlockedXor8 _InterlockedXor8
|
||||
#define InterlockedAnd8 _InterlockedAnd8
|
||||
|
||||
#else
|
||||
|
||||
#define InterlockedExchange8 ManualInterlockedExchange8
|
||||
#define InterlockedCompareExchange8 ManualInterlockedCompareExchange8
|
||||
#define InterlockedExchangeAdd8 ManualInterlockedExchangeAdd8
|
||||
#define InterlockedOr8 ManualInterlockedOr8
|
||||
#define InterlockedXor8 ManualInterlockedXor8
|
||||
#define InterlockedAnd8 ManualInterlockedAnd8
|
||||
|
||||
static inline char ManualInterlockedExchange8(char volatile* object, char desired) {
|
||||
__asm__ __volatile__ (
|
||||
"xchgb %0, %1"
|
||||
: "+q" (desired), "+m" (*object)
|
||||
:
|
||||
: "memory"
|
||||
);
|
||||
return desired;
|
||||
}
|
||||
|
||||
static inline unsigned char ManualInterlockedCompareExchange8(unsigned char volatile * dest, unsigned char exchange, unsigned char comparand) {
|
||||
unsigned char result;
|
||||
|
||||
__asm__ volatile (
|
||||
"lock cmpxchgb %[exchange], %[dest]"
|
||||
: "=a" (result), [dest] "+m" (*dest)
|
||||
: [exchange] "q" (exchange), "a" (comparand)
|
||||
: "memory"
|
||||
);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static inline unsigned char ManualInterlockedExchangeAdd8(unsigned char volatile * dest, unsigned char value) {
|
||||
unsigned char oldValue;
|
||||
unsigned char newValue;
|
||||
do {
|
||||
oldValue = *dest;
|
||||
} while (ManualInterlockedCompareExchange8(dest, oldValue + value, oldValue) != oldValue);
|
||||
return oldValue;
|
||||
}
|
||||
|
||||
static inline unsigned char ManualInterlockedOr8(unsigned char volatile * dest, unsigned char value) {
|
||||
unsigned char oldValue;
|
||||
do {
|
||||
oldValue = *dest;
|
||||
} while (ManualInterlockedCompareExchange8(dest, oldValue | value, oldValue) != oldValue);
|
||||
return oldValue;
|
||||
}
|
||||
|
||||
static inline unsigned char ManualInterlockedXor8(unsigned char volatile * dest, unsigned char value) {
|
||||
unsigned char oldValue;
|
||||
do {
|
||||
oldValue = *dest;
|
||||
} while (ManualInterlockedCompareExchange8(dest, oldValue ^ value, oldValue) != oldValue);
|
||||
return oldValue;
|
||||
}
|
||||
|
||||
static inline unsigned char ManualInterlockedAnd8(unsigned char volatile * dest, unsigned char value) {
|
||||
unsigned char oldValue;
|
||||
do {
|
||||
oldValue = *dest;
|
||||
} while (ManualInterlockedCompareExchange8(dest, oldValue & value, oldValue) != oldValue);
|
||||
return oldValue;
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void atomic_store_byte(unsigned char volatile * object, unsigned char desired) {
|
||||
do {
|
||||
MemoryBarrier();
|
||||
*(object) = (desired);
|
||||
MemoryBarrier();
|
||||
} while (0);
|
||||
}
|
||||
|
||||
static inline unsigned char atomic_load_byte(unsigned char volatile * object) {
|
||||
return (MemoryBarrier(), *(object));
|
||||
}
|
||||
|
||||
#define atomic_exchange_byte(object, desired) \
|
||||
InterlockedExchange8(object, desired)
|
||||
|
||||
static inline int atomic_compare_exchange_strong_byte(unsigned char volatile * object, unsigned char volatile * expected,
|
||||
unsigned char desired)
|
||||
{
|
||||
unsigned char old = *expected;
|
||||
*expected = InterlockedCompareExchange8(object, desired, old);
|
||||
return *expected == old;
|
||||
}
|
||||
|
||||
#define atomic_compare_exchange_weak_byte(object, expected, desired) \
|
||||
atomic_compare_exchange_strong_byte(object, expected, desired)
|
||||
|
||||
#define atomic_fetch_add_byte(object, operand) \
|
||||
InterlockedExchangeAdd8(object, operand)
|
||||
|
||||
#define atomic_fetch_sub_byte(object, operand) \
|
||||
InterlockedExchangeAdd8(object, -(operand))
|
||||
|
||||
#define atomic_fetch_or_byte(object, operand) \
|
||||
InterlockedOr8(object, operand)
|
||||
|
||||
#define atomic_fetch_xor_byte(object, operand) \
|
||||
InterlockedXor8(object, operand)
|
||||
|
||||
#define atomic_fetch_and_byte(object, operand) \
|
||||
InterlockedAnd8(object, operand)
|
||||
|
||||
#endif /* COMPAT_ATOMICS_WIN32_STDATOMIC_H */
|
||||
Reference in new issue
Block a user