Re: macro for fir list?

bart wrote:

On 30/03/2024 09:56, fir wrote:
>

>

yet other example
>
//bytes container
   char* bytes = NULL; int bytes_size = 0;
   void bytes_add(char val) {
(bytes=(char*)realloc(bytes,++bytes_size*sizeof(char)))[bytes_size-1]=val;
 }
   void bytes_load(char* name)  {    FILE *f = fopen(name, "rb"); int
c; while((c=getc(f))!=EOF) bytes_add(c);   fclose(f);  }

>
This is pretty inefficient. Loading an 8MB file this way takes 3
seconds, vs. 50ms to load it in one go.
>
Loading the same 90KB file 10,000 times took 120 seconds, vs. 0.8
seconds even using a scripting language.
>
80% of the inefficiency is growing the buffer one byte at a time. The
other 20% is reading the file one byte at a time.
>
>

according to what its said its a fault of reallock designers imo
(unles maybe there is faster reallock to use) as it could be
much faster imo
i vaguelly remember some code of mmclean when he uset fgets it
was pointed out its slow - but i dont remember if it was
ponted reallock is yet 3 times slower than fgets if your measurings are right and representative