klibc/exit.c

/*
 * exit.c
 *
 * exit(), including the handling of the atexit chain.
 */

#include <stdlib.h>
#include <unistd.h>
#include <sys/syscall.h>
#include "atexit.h"

/* Link chain for atexit/on_exit */
struct atexit *__atexit_list;

__noreturn exit(int rv)
{
  struct atexit *ap;

  for ( ap = __atexit_list ; ap ; ap = ap->next ) {
    /* This assumes extra args are harmless.  They should be in all
       normal C ABIs, but if an architecture has some particularly
       bizarre ABI this might be worth watching out for. */
    ap->fctn(rv, ap->arg);
  }

  /* Handle any library destructors */

  _exit(rv);
}