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Merge remote-tracking branch 'origin/feature/memory_set_clear' into development

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# Conflicts:
#	include/etl/memory.h
#	include/etl/version.h
#	support/Release notes.txt
This commit is contained in:
John Wellbelove 2019-05-07 21:28:29 +01:00
parent 2a3aa9fcee
commit a8253b2a3f
3 changed files with 42 additions and 12 deletions
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48
include/etl/memory.h
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@ -1108,31 +1108,57 @@ namespace etl
//*****************************************************************************
/// A low level function that clears an object's memory to zero.
///\tparam T The type.
///\param object The object to clear.
///\param p Pointer to the memory.
///\param n Size of the memory.
///\ingroup memory
//*****************************************************************************
inline void memory_clear(volatile char* p, size_t n)
{
while (n--)
{
*p++ = 0;
}
}
//*****************************************************************************
/// A low level function that clears an object's memory to zero.
///\tparam T The type.
///\param object The object to clear.
///\ingroup memory
//*****************************************************************************
template <typename T>
void memory_clear(T &object)
{
std::fill_n(reinterpret_cast<char*>(&object),
sizeof(T),
0);
memory_clear(reinterpret_cast<volatile char*>(&object), sizeof(T));
}
//*****************************************************************************
/// A low level function that clears an object's memory to zero.
///\param p Pointer to the memory.
///\param n Size of the memory.
///\param value The value to set.
///\ingroup memory
//*****************************************************************************
inline void memory_set(volatile char* p, size_t n, char value)
{
while (n--)
{
*p++ = value;
}
}
//*****************************************************************************
/// A low level function that sets an object's memory to a value.
///\tparam T The type.
///\param object The object to set.
///\param value The value to set the object with.
///\param object The object to set.
///\param value The value to set the object's memory to.
///\ingroup memory
//*****************************************************************************
template <typename T>
void memory_set(T &object, int value)
void memory_set(T &object, char value)
{
std::fill_n(reinterpret_cast<char*>(&object),
sizeof(T),
static_cast<char>(value));
memory_set(reinterpret_cast<volatile char*>(&object), sizeof(T), value);
}
}

2
include/etl/version.h
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@ -39,7 +39,7 @@ SOFTWARE.
#define ETL_VERSION_MAJOR 14
#define ETL_VERSION_MINOR 22
#define ETL_VERSION_PATCH 0
#define ETL_VERSION_PATCH 1
#define ETL_VERSION ETL_STRINGIFY(ETL_VERSION_MAJOR) ETL_STRINGIFY(ETL_VERSION_MINOR) ETL_STRINGIFY(ETL_VERSION_PATCH)
#define ETL_VERSION_W ETL_WIDE_STRING(ETL_CONCAT(ETL_CONCAT(ETL_VERSION_MAJOR, ETL_VERSION_MINOR), ETL_VERSION_PATCH))

4
support/Release notes.txt
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@ -1,3 +1,7 @@
===============================================================================
14.22.1
Modified memory functions so that they will not be optimised away.
===============================================================================
14.22.0
Added etl::memory_clear and etl::memory_set utility functions.