Amount of heap memory reserved by a procces

[jose luis fernandez diaz]

Hi,

The program below gets 1 byte of heap memory:

int main(void)
{
char *ptr = new char;
}

Is there a C system call that give the amount of memory reserved by a process ?

Thanks,
Jose Luis.

[John Harrison]

Re: Amount of heap memory reserved by a procces


"jose luis fernandez diaz" <jose_luis_fdez _diaz_news@yaho o.es> wrote in
message news:c2f95fd0.0 402090045.53297 699@posting.goo gle.com...[color=blue]
> Hi,
>
> The program below gets 1 byte of heap memory:
>[/color]

To be specific, one byte of useable heap memory. It might actually reserve
more.
[color=blue]
> int main(void)
> {
> char *ptr = new char;
> }
>
> Is there a C system call that give the amount of memory reserved by a[/color]
process ?

No. Not in standard C, (or C++ either).
[color=blue]
>
> Thanks,
> Jose Luis.[/color]

john

[Michael Groys]

Re: Amount of heap memory reserved by a procces



John Harrison wrote:[color=blue]
> "jose luis fernandez diaz" <jose_luis_fdez _diaz_news@yaho o.es> wrote in
> message news:c2f95fd0.0 402090045.53297 699@posting.goo gle.com...
>[color=green]
>>Hi,
>>
>>The program below gets 1 byte of heap memory:
>>[/color]
>
>
> To be specific, one byte of useable heap memory. It might actually reserve
> more.
>
>[color=green]
>>int main(void)
>>{
>> char *ptr = new char;
>>}
>>
>>Is there a C system call that give the amount of memory reserved by a[/color]
>
> process ?
>
> No. Not in standard C, (or C++ either).
>[/color]

In VC there is function:
size_t _msize(void *memblock)
It returns size of allocated memory block.
It works with malloc/calloc/realloc.
Still it may return more then 1 in your example.
I assume that it also works with new although no guarantee.
[color=blue][color=green]
>>Thanks,
>>Jose Luis.[/color]
>
>
> john
>
>[/color]