Re: Defining placement new[] and delete[]
On Dec 23, 8:05 pm, "Ron AF Greve" <ron@localhost> wrote:
--"zr" <zvir...@gmail.com> wrote in message
news:69274235-4512-42c4-b1e8-eff85bfb406c@r10g2000prf.googlegroups.com...
FAQ 11.14
(http://www.parashift.com/c++-faq-lite/dtors.html#faq-11.14)
shows how to write placement new operator that uses a custom
memory pool. For the given example, how would the
corresponding new[] and delete[] operators be defined?
AFAIK (don't actually use that often (not to say never at all
:-) ):
//static void * operator new( size_t Size );
//static void * operator new( size_t Size, void *Serialize );
//static void * operator new( size_t Size, VUniqueId UniqueId );
//static void * operator new( size_t Size, VNoUniqueId NoUniqueId );
//static void operator delete( void *Serialize );
//static void operator delete( void *Memory, void *Serialize );
//static void operator delete( void *Memory, VUniqueId UniqueId );
//static void operator delete( void *Memory, VNoUniqueId NoUniqueId );
Note that the compiler calls the corresponding one if it
throws but you can't do a 'delete' since then the compiler
would not know what to call.So you have to call ~Class
directly;.
Not really. All you have to do is ensure that the default
operator delete can handle all of the cases correctly.
Typically, this will be done by squirreling information in front
of the returned pointer (which of course means that you also
have to provide a replacement for the default operator new).
--
James Kanze (GABI Software) email:james.kanze@gmail.com
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