Re: Can't get custom allocation function to work
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- Subject: Re: Can't get custom allocation function to work
- From: Ralph Hempel <rhempel@...>
- Date: 2009年3月24日 10:34:03 -0400
kathrin_69@gmx.de wrote:
Hi,
I'm trying to replace the Lua default l_alloc function with my own one.
My aim is to have all memory Lua allocates inside a single array of
pre-allocated memory.
<snip>
void* alloc_impl_manual( void* ptr, size_t osize, size_t nsize )
{
if (nsize)
{
std::vector<unsigned char>* mem = new std::vector<unsigned
char>(nsize);
//yes, it will leak. don't care for now
return &(*mem)[0]; //returned memory position should be aligned by
new
}
return NULL;
}
Ummm, besides the leak, should you not be returning:
return( mem )
since mem is already a pointer to the memory you allocated?
And this expression &(*mem)[0] is very strange. I parse that as:
(the adress of ( (the contents of mem) ???? )
my compiler warns that the subscripted value is neither an array nor a
pointer...
Ralph