69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
#pragma once
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#ifdef DXX_HAVE_POISON_VALGRIND
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#include <valgrind/memcheck.h>
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#endif
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template <typename T>
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static inline void DXX_MAKE_MEM_UNDEFINED(T *b, unsigned long l)
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{
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(void)b;(void)l;
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#ifdef DXX_HAVE_POISON_VALGRIND
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VALGRIND_MAKE_MEM_UNDEFINED(b, l);
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#define DXX_HAVE_POISON_UNDEFINED 1
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#endif
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}
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template <typename T>
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static inline void DXX_MAKE_MEM_UNDEFINED(T *b, T *e)
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{
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unsigned char *bc = reinterpret_cast<unsigned char *>(b);
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DXX_MAKE_MEM_UNDEFINED(bc, reinterpret_cast<unsigned char *>(e) - bc);
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}
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template <typename T>
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static inline void DXX_MAKE_VAR_UNDEFINED(T &b)
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{
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unsigned char *const bc = reinterpret_cast<unsigned char *>(&b);
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DXX_MAKE_MEM_UNDEFINED(bc, sizeof(T));
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}
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template <typename T, typename V>
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static inline void _DXX_POISON_MEMORY_RANGE(T b, T e, const V &v)
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{
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#ifdef DXX_HAVE_POISON
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int store = 0;
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#ifdef DXX_HAVE_POISON_OVERWRITE
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store |= 1;
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#endif
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#ifdef DXX_HAVE_POISON_VALGRIND
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if (!store)
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store |= RUNNING_ON_VALGRIND;
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#endif
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if (!store)
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return;
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for (; b != e; ++b)
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*b = v;
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#else
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(void)b;(void)e;(void)v;
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#endif
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}
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template <typename T, typename V>
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static inline void DXX_POISON_MEMORY(T b, unsigned long l, const V &v)
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{
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_DXX_POISON_MEMORY_RANGE(b, b + l, v);
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DXX_MAKE_MEM_UNDEFINED(b, l);
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}
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template <typename T, typename V>
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static inline void DXX_POISON_MEMORY(T b, T e, const V &v)
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{
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_DXX_POISON_MEMORY_RANGE(b, e, v);
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DXX_MAKE_MEM_UNDEFINED(b, e);
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}
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#ifndef DXX_HAVE_POISON_UNDEFINED
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#define DXX_HAVE_POISON_UNDEFINED 0
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#endif
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