#pragma once
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// Off by default, can be enabled in platform specific configuration
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#ifndef UNITY_ATOMIC_USE_CLANG_ATOMICS
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# define UNITY_ATOMIC_USE_CLANG_ATOMICS 0
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#endif
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#ifndef UNITY_ATOMIC_USE_GCC_ATOMICS
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# define UNITY_ATOMIC_USE_GCC_ATOMICS 0
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#endif
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#if UNITY_ATOMIC_USE_GCC_ATOMICS || UNITY_ATOMIC_USE_CLANG_ATOMICS
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#include <stdint.h>
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# if __SIZEOF_POINTER__ == 8
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typedef int64_t non_atomic_word;
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typedef __int128 non_atomic_word2;
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# define UNITY_ATOMIC_INT_OVERLOAD
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# elif __SIZEOF_POINTER__ == 4
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typedef int32_t non_atomic_word;
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typedef int64_t non_atomic_word2;
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# else
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# error unsupported __SIZEOF_POINTER__
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# endif
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typedef non_atomic_word atomic_word;
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// that might look weird as we have non_atomic_word2 member that should have proper alignment
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// but on arm7 (32bits) on older ios, we sometimes saw unaligned acess to atomic_word2
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// it seems that adding explicit align here helps
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union alignas(2 * __SIZEOF_POINTER__)atomic_word2
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{
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non_atomic_word2 v;
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struct
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{
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atomic_word lo;
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atomic_word hi;
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};
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};
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#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
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// on arm/arm64 we have custom implementation for atomic queue (so no DCAS)
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#else
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#define ATOMIC_HAS_DCAS
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#endif
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#elif defined(__x86_64__) || defined(_M_X64)
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# include <emmintrin.h>
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/// atomic_word must be 8 bytes aligned if you want to use it with atomic_* ops.
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# if defined(_MSC_VER)
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typedef __int64 atomic_word;
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# else
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typedef long long atomic_word;
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# endif
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/// atomic_word2 must be 16 bytes aligned if you want to use it with atomic_* ops.
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union atomic_word2
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{
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__m128i v;
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struct
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{
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atomic_word lo, hi;
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};
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};
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#define ATOMIC_HAS_DCAS
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#define UNITY_ATOMIC_INT_OVERLOAD
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#elif defined(__x86__) || defined(__i386__) || defined(_M_IX86)
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/// atomic_word must be 4 bytes aligned if you want to use it with atomic_* ops.
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typedef int atomic_word;
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/// atomic_word2 must be 8 bytes aligned if you want to use it with atomic_* ops.
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union atomic_word2
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{
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# if defined(_MSC_VER)
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__int64 v;
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# else
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long long v;
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# endif
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# if !defined(__SSE2__)
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double d;
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# endif
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struct
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{
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atomic_word lo, hi;
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};
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};
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#define ATOMIC_HAS_DCAS
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#elif defined(_M_ARM64) || (defined(__arm64__) || defined(__aarch64__)) && (defined(__clang__) || defined(__GNUC__))
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typedef long long atomic_word;
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struct alignas(16) atomic_word2
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{
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atomic_word lo;
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atomic_word hi;
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};
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# define ATOMIC_HAS_DCAS
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# define ATOMIC_HAS_LDR
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# define UNITY_ATOMIC_INT_OVERLOAD
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#elif defined(_M_ARM) || (defined(__arm__) && (defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)) && (defined(__clang__) || defined(__GNUC__)))
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typedef int atomic_word;
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union atomic_word2
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{
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# if defined(_MSC_VER)
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__int64 v;
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# else
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long long v;
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# endif
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struct
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{
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atomic_word lo;
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atomic_word hi;
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};
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};
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# define ATOMIC_HAS_DCAS
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# if !defined(_MSC_VER)
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# define ATOMIC_HAS_LDR
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# endif
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#elif PLATFORM_WEBGL
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#include <stdint.h>
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typedef int32_t atomic_word;
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union atomic_word2
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{
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int64_t v;
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struct
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{
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atomic_word lo;
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atomic_word hi;
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};
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};
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#if SUPPORT_THREADS
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# define ATOMIC_HAS_DCAS
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# define ATOMIC_HAS_LDR
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#endif
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#elif defined(__ppc64__) || defined(_ARCH_PPC64)
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typedef long atomic_word;
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# define ATOMIC_HAS_LDR
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# define UNITY_ATOMIC_INT_OVERLOAD
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#elif defined(__ppc__)
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typedef int atomic_word;
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# define ATOMIC_HAS_LDR
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#else
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# if defined(__LP64__)
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typedef long long atomic_word;
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# define UNITY_ATOMIC_INT_OVERLOAD
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# else
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typedef int atomic_word;
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# endif
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struct atomic_word2
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{
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atomic_word lo;
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atomic_word hi;
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};
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#endif
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#if defined(ATOMIC_HAS_DCAS)
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#define ATOMIC_HAS_QUEUE 2
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#elif (defined(__arm64__) || defined(__aarch64__)) && (defined(__clang__) || defined(__GNUC__))
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#define ATOMIC_HAS_QUEUE 1
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#elif defined(__arm__) && (defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__)) && (defined(__clang__) || defined(__GNUC__))
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#define ATOMIC_HAS_QUEUE 1
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#else
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#define ATOMIC_HAS_QUEUE 0
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#endif
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