Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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111 lines
3.9 KiB
111 lines
3.9 KiB
/* |
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* Copyright (c) 2023, Google LLC |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* * Neither the name of Google LLC nor the |
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* names of its contributors may be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef UPB_PORT_ATOMIC_H_ |
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#define UPB_PORT_ATOMIC_H_ |
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#include "upb/port/def.inc" |
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#ifdef UPB_USE_C11_ATOMICS |
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#include <stdatomic.h> |
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#include <stdbool.h> |
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UPB_INLINE void upb_Atomic_Init(_Atomic uintptr_t* addr, uintptr_t val) { |
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atomic_init(addr, val); |
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} |
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UPB_INLINE uintptr_t upb_Atomic_LoadAcquire(_Atomic uintptr_t* addr) { |
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return atomic_load_explicit(addr, memory_order_acquire); |
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} |
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UPB_INLINE void upb_Atomic_StoreRelaxed(_Atomic uintptr_t* addr, |
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uintptr_t val) { |
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atomic_store_explicit(addr, val, memory_order_relaxed); |
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} |
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UPB_INLINE void upb_Atomic_AddRelease(_Atomic uintptr_t* addr, uintptr_t val) { |
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atomic_fetch_add_explicit(addr, val, memory_order_release); |
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} |
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UPB_INLINE void upb_Atomic_SubRelease(_Atomic uintptr_t* addr, uintptr_t val) { |
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atomic_fetch_sub_explicit(addr, val, memory_order_release); |
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} |
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UPB_INLINE uintptr_t upb_Atomic_ExchangeAcqRel(_Atomic uintptr_t* addr, |
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uintptr_t val) { |
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return atomic_exchange_explicit(addr, val, memory_order_acq_rel); |
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} |
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UPB_INLINE bool upb_Atomic_CompareExchangeStrongAcqRel(_Atomic uintptr_t* addr, |
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uintptr_t* expected, |
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uintptr_t desired) { |
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return atomic_compare_exchange_strong_explicit( |
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addr, expected, desired, memory_order_release, memory_order_acquire); |
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} |
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#else // !UPB_USE_C11_ATOMICS |
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UPB_INLINE void upb_Atomic_Init(uintptr_t* addr, uintptr_t val) { *addr = val; } |
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UPB_INLINE uintptr_t upb_Atomic_LoadAcquire(uintptr_t* addr) { return *addr; } |
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UPB_INLINE void upb_Atomic_StoreRelaxed(uintptr_t* addr, uintptr_t val) { |
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*addr = val; |
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} |
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UPB_INLINE void upb_Atomic_AddRelease(uintptr_t* addr, uintptr_t val) { |
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*addr += val; |
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} |
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UPB_INLINE void upb_Atomic_SubRelease(uintptr_t* addr, uintptr_t val) { |
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*addr -= val; |
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} |
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UPB_INLINE uintptr_t upb_Atomic_ExchangeAcqRel(uintptr_t* addr, uintptr_t val) { |
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uintptr_t ret = *addr; |
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*addr = val; |
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return ret; |
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} |
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UPB_INLINE bool upb_Atomic_CompareExchangeStrongAcqRel(uintptr_t* addr, |
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uintptr_t* expected, |
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uintptr_t desired) { |
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if (*addr == *expected) { |
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*addr = desired; |
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return true; |
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} else { |
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*expected = *addr; |
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return false; |
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} |
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} |
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#endif |
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#include "upb/port/undef.inc" |
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#endif // UPB_PORT_ATOMIC_H_
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