[9fans] atexit() & atexitdont()

[Oleg <lego12239@yandex.ru>]

  Hi, all.

I looked at atexit() and atexitdont() and i don't understand why these
functions are implemented with a static array instead of singly linked list?
May be somebody with a greater plan9 experience can help me with my question.

If i do:

#include <u.h>
#include <libc.h>

void f1(void)
{
  print("f1\n");
}

void f2(void)
{
  print("f2\n");
}

void main(int, char**)
{
  atexit(f1);
  atexit(f2);
  atexit(f1);

  atexitdont(f2);
  atexit(f2);

  exits(nil);
}

i get:

f1
f2
f1

instead of:

f1
f1
f2

because of atexit.c source code.

  Thanks.