Hу здорово, уважаемый All!

using borland c++ 3.1/DOS
i need to determine available conv.mem

i tried to use asm to call INT 12h, but it doesn`t work in modern computers
(always returning 640Kb)

also tried to use asm  to call dos`s INT 48h, but it always returned
constant value after a several malloc`s.

i also tried to use a standart  DOS.H lib to call
allocmem(0xFFFF,&seg), but it just returns a largest block available(i
think it is same as INT 48h)

so i wrote a very DUMB code to get know available conv.mem size in bytes
it works, and it does what i need, but it so dumb. I know it should be a
right way to do the thing. Tell me please.


And here is the code: (don`t laugh :)

------------------------------------------------
//... some includes

void sayfreemem(void){
size_t i=65535;
char *str;

//step by 1000
while(i)  {
    if ( (str = (char *) malloc(i)) ){
       free(str);
       break;
       }
    i-=1000;
}//while

//step by 100
while(i) {
 i+=100;
    if (!(str = (char *) malloc(i)))
       break;
     else
       free(str);
}//while

//step by 10
i-=10;
while(i)  {
    if ((str = (char *) malloc(i))){
       free(str);
       break;
       }
    i-=10;
}//while

//step by 1
while(++i) {
    if (!(str = (char *) malloc(i)))
       break;
     else
       free(str);
}//while
printf("\n available mem: %u\n",i);
}//func

main (){
char *str;

//....some code

 sayfreemem();          //says 4example: available mem: 43455
 str = (char *) malloc(100);
 sayfreemem();          //says: available mem: 43353

//....some code

 free(str);

}//main

------------------------------------------------




  wbr, Dmitry
                                                       [win98 up: 10+14:58:44]
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