musl/src/exit/at_quick_exit.c
2012-08-25 22:49:47 -04:00

30 lines
422 B
C

#include <stdlib.h>
#include "libc.h"
#define COUNT 32
static void (*funcs[COUNT])(void);
static int count;
static int lock[2];
void __funcs_on_quick_exit()
{
void (*func)(void);
LOCK(lock);
while (count > 0) {
func = funcs[--count];
UNLOCK(lock);
func();
LOCK(lock);
}
}
int at_quick_exit(void (*func)(void))
{
if (count == 32) return -1;
LOCK(lock);
funcs[count++] = func;
UNLOCK(lock);
return 0;
}