On 2013-Mar-29 20:27:27 -0400, Rod Person <[email protected]> wrote: >Everything is going we except that the program gives warnings that there >isn't enough free memory on the system to perform certain actions.
That premise sounds suspiciously like the upstream author doesn't
understand how Unix VM works.
>int getSysCtl(int top_level, int next_level){
> int mib[2], ctlvalue;
> size_t len;
>
> mib[0] = top_level;
> mib[1] = next_level;
> len = sizeof(ctlvalue);
>
> sysctl(mib, 2, &ctlvalue, &len, NULL, 0);
>
> return ctlvalue;
>}
>
>
>int main(void){
> int realmem = getSysCtl(CTL_HW, HW_REALMEM);
> int usermem = getSysCtl(CTL_HW, HW_USERMEM);
HW_REALMEM and HW_USERMEM return an unsigned long, not an int. That
probably explains the nonsense value you are seeing in 'User Memory'.
> printf("Total VM Memory: %i\n",vmsize.t_vm);
> printf("Total Real Memory: %i\n",vmsize.t_rm);
> printf("shared real memory: %i\n",vmsize.t_rmshr);
> printf("active shared real memory: %i\n",vmsize.t_armshr);
> printf("Total Free Memory pages: %i\n",vmsize.t_free);
And these numbers are all in pages as you surmise.
--
Peter Jeremy
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