56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
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#pragma once
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#include <stdint.h>
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#include "xxhash.h"
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namespace il2cpp
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{
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namespace utils
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{
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class MemoryUtils
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{
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public:
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template<typename T>
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static int32_t MemCmpRef(T* left, T* right)
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{
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return memcmp(left, right, sizeof(T));
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}
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#if IL2CPP_TINY
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template<typename T>
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static int32_t MemHashRef(T* val)
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{
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return XXH32(val, sizeof(T), 0x8f37154b);
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}
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#endif
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};
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#define DECL_MEMCMP_NUM(typ) template<> inline int32_t MemoryUtils::MemCmpRef<typ>(typ* left, typ* right) { return (*right > *left) ? -1 : (*right < *left) ? 1 : 0; }
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DECL_MEMCMP_NUM(int8_t)
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DECL_MEMCMP_NUM(int16_t)
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DECL_MEMCMP_NUM(int32_t)
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DECL_MEMCMP_NUM(int64_t)
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DECL_MEMCMP_NUM(uint8_t)
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DECL_MEMCMP_NUM(uint16_t)
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DECL_MEMCMP_NUM(uint32_t)
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DECL_MEMCMP_NUM(uint64_t)
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// don't think this will give the right result for NaNs and such
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DECL_MEMCMP_NUM(float)
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DECL_MEMCMP_NUM(double)
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#undef DECL_MEMCMP_NUM
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#define DECL_MEMHASH_NUM(typ) template<> inline int32_t MemoryUtils::MemHashRef(typ* val) { return (int32_t)(*val); }
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DECL_MEMHASH_NUM(int8_t)
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DECL_MEMHASH_NUM(int16_t)
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DECL_MEMHASH_NUM(int32_t)
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DECL_MEMHASH_NUM(uint8_t)
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DECL_MEMHASH_NUM(uint16_t)
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DECL_MEMHASH_NUM(uint32_t)
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DECL_MEMHASH_NUM(float)
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#undef DECL_MEMHASH_NUM
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template<> inline int32_t MemoryUtils::MemHashRef(int64_t* val) { int64_t k = *val; return (int32_t)(k & 0xffffffff) ^ (int32_t)((k >> 32) & 0xffffffff); }
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template<> inline int32_t MemoryUtils::MemHashRef(uint64_t* val) { return MemHashRef(reinterpret_cast<int64_t*>(val)); }
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template<> inline int32_t MemoryUtils::MemHashRef(double* val) { return MemHashRef(reinterpret_cast<int64_t*>(val)); }
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} // namespace utils
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} // namespace il2cpp
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