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#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include "_stdlib.h"
/** register a function to run at quick exit **/
int at_quick_exit(void (*func)(void))
{
SIGNAL_SAFE(0);
struct atexit *ae = &(__stdlib.at_quick_exit);
while (ae->nfns == sizeof(ae->fns) / sizeof(ae->fns[0])) {
if (ae->next == NULL) {
ae->next = calloc(1, sizeof(*ae->next));
if (ae->next == NULL) {
#ifdef ENOMEM
errno = ENOMEM;
#endif
return 1;
}
ae->next->prev = ae;
}
ae = ae->next;
}
ae->fns[ae->nfns++] = func;
return 0;
}
/***
The fn(at_quick_exit) registers the function arg(func) to be called when the
program exits via fn(quick_exit). The function must take no parameters.
***/
/* UNSPECIFIED: - */
/* UNDEFINED: - */
/* IMPLEMENTATION: the number of registrations allowed (at least 32) */
/* LOCALE: - */
/* RETURN(0): success */
/* RETURN(NZ): failure */
/*
STDC(201112)
*/
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