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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// clang-format off
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/* Copyright 2016 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#ifndef NSYNC_PUBLIC_NSYNC_ATOMIC_H_
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#define NSYNC_PUBLIC_NSYNC_ATOMIC_H_
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#include "libc/thread/nsync_cpp.h"
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/* This file is not to be included directly by the client. It exists because
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on some platforms, one cannot use a simple uint32_t with atomic operations.
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*/
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#if NSYNC_ATOMIC_TYPECHECK
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#include "libc/fmt/conv.h"
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#include "libc/inttypes.h"
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NSYNC_CPP_START_
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typedef struct { uint32_t value; } nsync_atomic_uint32_;
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NSYNC_CPP_END_
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#define NSYNC_ATOMIC_UINT32_INIT_ { 0 }
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#define NSYNC_ATOMIC_UINT32_LOAD_(p) ((p)->value)
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#define NSYNC_ATOMIC_UINT32_STORE_(p,v) ((p)->value = (v))
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#define NSYNC_ATOMIC_UINT32_PTR_(p) (&(p)->value)
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#elif NSYNC_ATOMIC_C11
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#include "libc/intrin/atomic.h"
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NSYNC_CPP_START_
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typedef atomic_uint_least32_t nsync_atomic_uint32_;
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NSYNC_CPP_END_
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#define NSYNC_ATOMIC_UINT32_INIT_ 0
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#define NSYNC_ATOMIC_UINT32_LOAD_(p) (*(p))
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#define NSYNC_ATOMIC_UINT32_STORE_(p,v) (*(p) = (v))
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#define NSYNC_ATOMIC_UINT32_PTR_(p) (p)
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#elif NSYNC_ATOMIC_CPP11
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#include "third_party/libcxx/atomic"
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NSYNC_CPP_START_
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typedef std::atomic<uint32_t> nsync_atomic_uint32_;
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NSYNC_CPP_END_
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#define NSYNC_ATOMIC_UINT32_INIT_ ATOMIC_VAR_INIT (0)
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#define NSYNC_ATOMIC_UINT32_LOAD_(p) (std::atomic_load (p))
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#define NSYNC_ATOMIC_UINT32_STORE_(p,v) (std::atomic_store ((p), (uint32_t) (v)))
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#define NSYNC_ATOMIC_UINT32_PTR_(p) (p)
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#else
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#include "libc/fmt/conv.h"
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#include "libc/inttypes.h"
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NSYNC_CPP_START_
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typedef uint32_t nsync_atomic_uint32_;
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NSYNC_CPP_END_
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#define NSYNC_ATOMIC_UINT32_INIT_ 0
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#define NSYNC_ATOMIC_UINT32_LOAD_(p) (*(p))
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#define NSYNC_ATOMIC_UINT32_STORE_(p,v) (*(p) = (v))
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#define NSYNC_ATOMIC_UINT32_PTR_(p) (p)
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#endif
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#endif /*NSYNC_PUBLIC_NSYNC_ATOMIC_H_*/
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