/**
* FUNCTION: smlLibRealloc
*
* Changes size of preallocated space for memory object "pObject"
* to the new size specified by "constSize".
*
* If the new size is larger than the old size, the old contents
* is not changed. Additionally space is added at the the end of
* "pObject". The new allocated space is not initialized
* to any special value.
* If the new size is smaller than the old size, the unused space
* is discarded.
*
* If "pObject" is a NULL pointer, this function behaves just like
* smlLibMalloc().
* If "pObject" does not point to a previously allocated memory area,
* the behavior is undefined.
* If "constSize" is 0, a NULL pointer is returned and the space
* which "pObject" points to is freed up.
*
* Returns a pointer to the first byte of the resized object.
* If no new memory could be allocated, a NULL Pointer is returned
* without changing the memory object "pObject" (Nothing happens to the content).
*
* IN/OUT void *pObject, memory object, which size should be changed
* IN: MemSize_t constSize new size the memory object shall use
* RETURN: void* Pointer to memory object, which size has been
* be changed
* NULL, if not successfull or
* if constSize==0
*/
SML_API void *smlLibRealloc(void *pObject, MemSize_t constSize)
{
#ifdef __PALM_OS__
VoidPtr_t _new_object;
MemSize_t _old_size;
// It's a malloc!
if (pObject == NULL)
return smlLibMalloc(constSize);
_old_size = MemPtrSize(pObject);
if (constSize <= _old_size) {
// make it smaller
MemPtrResize(pObject, constSize);
_new_object = pObject;
} else {
// maker it larger (we need to allocate new memory somewhere else)
_new_object = smlLibMalloc(constSize);
if (_new_object != NULL) {
smlLibMemmove(_new_object, pObject, _old_size);
smlLibFree(pObject);
}
}
return _new_object;
#else
return DmReallocMem(pObject, (UINT32)constSize);
#endif
}
/**
* Changes size of preallocated space for memory object "pObject"
* to the new size specified by "constSize".
*
* If the new size is larger than the old size, the old contents
* is not changed. Additionally space is added at the the end of
* "pObject". The new allocated space is not initialized
* to any special value.
* If the new size is smaller than the old size, the unused space
* is discarded.
*
* If "pObject" is a NULL pointer, this function behaves just like
* smlLibMalloc().
* If "pObject" does not point to a previously allocated memory area,
* the behavior is undefined.
* If "constSize" is 0, a NULL pointer is returned and the space
* which "pObject" points to is freed up.
*
* Returns a pointer to the first byte of the resized object.
* If no new memory could be allocated, a NULL Pointer is returned
* without changing the memory object "pObject" (Nothing happens to the content).
*
* @param pObject (IN/OUT)
* memory object, which size should be changed
* @param constSize (IN)
* new size the memory object shall use
* @return void pointer to memory object, which size has been be changed\n
* NULL, if not successfull or if constSize==0
*/
SML_API void *smlLibRealloc(void *pObject, MemSize_t constSize)
{
#ifdef __PALM_OS__
VoidPtr_t _new_object;
MemSize_t _old_size;
// It's a malloc!
if (pObject == NULL)
return smlLibMalloc(constSize);
_old_size = MemPtrSize(pObject);
if (constSize <= _old_size) {
// make it smaller
MemPtrResize(pObject, constSize);
_new_object = pObject;
} else {
// maker it larger (we need to allocate new memory somewhere else)
_new_object = smlLibMalloc(constSize);
if (_new_object != NULL) {
smlLibMemmove(_new_object, pObject, _old_size);
smlLibFree(pObject);
}
}
return _new_object;
#else
// %%% luz 2002-10-02
#ifdef MEMORY_PROFILING
return sysync_realloc(pObject, constSize);
#else
return realloc(pObject, constSize);
#endif
#endif
}
