Re: serialization, size errors... or something else.

  • From: Tyler Littlefield <tyler@xxxxxxxxxxxxx>
  • To: programmingblind@xxxxxxxxxxxxx
  • Date: Wed, 30 Jun 2010 16:16:19 -0600

What do you mean I'm passing it around as different types? Fwrite takes the 
size of the block your writing, the number of blocks, and the file to write to, 
as well as the block. so you supply 1 for the count, sizelf(T), and the address 
of t. T is just the templated type. It looks something like:
template <class T>
void Write(const &T data)

                Thanks,
Tyler Littlefield
        http://tds-solutions.net
        Twitter: sorressean

On Jun 30, 2010, at 4:13 PM, qubit wrote:

> Ok, the plot thickens -- did you cast the address of the pointer to a char* 
> to pass to fwrite? Maybe a dumb question but I'm just feeling this out.
> You have p being of some type T* and you say
>    fwrite(fp, (char*)p, sizeof(T));
> Is this done in a template function where you don't know the final type of 
> T?
> What is T anyway?
> I'm just hoping some funny pointer arithmetic is not getting done on p 
> because you are passing it around as different types.
> Any progress?
> --le
> 
> 
> ----- Original Message ----- 
> From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Wednesday, June 30, 2010 4:55 PM
> Subject: Re: serialization, size errors... or something else.
> 
> 
> Basically what I did was used a templated function to write, then I write 
> the arg with fwrite, and use sizeof(T) to get the size. Reading does the 
> same thing, I also overloaded operators << and >> to read and write.
> Thanks,
> Tyler Littlefield
> http://tds-solutions.net
> Twitter: sorressean
> 
> On Jun 30, 2010, at 3:53 PM, qubit wrote:
> 
>> without knowing a little about your serialization strategy, it's hard to
>> diagnose what might be wrong.
>> Do you do something similar to Boost, or do you have some other algorithm?
>> --le
>> 
>> ----- Original Message ----- 
>> From: "Tyler Littlefield" <tyler@xxxxxxxxxxxxx>
>> To: <programmingblind@xxxxxxxxxxxxx>
>> Sent: Wednesday, June 30, 2010 4:02 PM
>> Subject: Re: serialization, size errors... or something else.
>> 
>> 
>> I do know I'm reading to much because I get a size excception. I'm not 
>> sure
>> how to cut this down because the serialization works through an 
>> inheritance
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