Re: Using special allocator interfaces...

"Chris Thomasson" <cristom@[EMAIL PROTECTED]
> wrote in message 
news:m8CdnYy2573wR77VnZ2dnUVZ_j2dnZ2d@[EMAIL PROTECTED]
> "Chris Thomasson" <cristom@[EMAIL PROTECTED]
> wrote in message 
> news:6YadndjqnMtxkL7VnZ2dnUVZ_rSrnZ2d@[EMAIL PROTECTED]
>> "Alf P. Steinbach" <alfps@[EMAIL PROTECTED]
> wrote in message
> [...]
>
>
>
>> // Can I use the above allocator interface like this:
>> template<typename T>
>> struct AllocatorBlock {
>>  unsigned char mBuffer[sizeof(T)];
>>  Allocator::Region* mRegion;
>>
>>  static void* MemRequest() {
>>    Allocator::Region* region;
>>    AllocatorBlock* const block = (AllocatorBlock*)
>>      Allocator::MemRequest(&region, sizeof(T));
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> This is in ERROR!
>
>    The size is all wrong on a per-object basis; here is correction:
>
[...]
>>  static void MemRelease(void* ptr) {
>>    AllocatorBlock* const block = (AllocatorBlock*)ptr;
>>    Allocator::MemRelease(block->mRegion, ptr, sizeof(T));
>>  }
>> };


sizeof(*block), not sizeof(T) in MemRelease:

    static void MemRelease(void* ptr) {
      AllocatorBlock* const block = (AllocatorBlock*)ptr;
      Allocator::MemRelease(block->mRegion, ptr, sizeof(*block)); // <-- !
    }


Of course!