static void
backtrace_and_maps (int do_abort, bool written, int fd)
{
if (do_abort > 1 && written)
{
void *addrs[64];
#define naddrs (sizeof (addrs) / sizeof (addrs[0]))
int n = __backtrace (addrs, naddrs);
if (n > 2)
{
#define strnsize(str) str, strlen (str)
#define writestr(str) write_not_cancel (fd, str)
writestr (strnsize ("======= Backtrace: =========\n"));
__backtrace_symbols_fd (addrs + 1, n - 1, fd);
writestr (strnsize ("======= Memory map: ========\n"));
int fd2 = open_not_cancel_2 ("/proc/self/maps", O_RDONLY);
char buf[1024];
ssize_t n2;
while ((n2 = read_not_cancel (fd2, buf, sizeof (buf))) > 0)
if (write_not_cancel (fd, buf, n2) != n2)
break;
close_not_cancel_no_status (fd2);
}
}
}
/*+ register a pointer to be automatically cleaned up at program exit +*/
void alloc_register(void *ptr) /*+ pointer to newly-alloc'd memory +*/
{
#if defined(DEBUG) && defined(DEBUG_ALLOC)
fprintf(stderr, "alloc_register(%p)\n", ptr);
__backtrace();
#endif
assert(NULL != ptr);
void* tmp;
tmp = realloc(alloc_cleanup, sizeof(void *) * (alloc_cleanup_count + 1));
assert(NULL != tmp);
alloc_cleanup = tmp;
alloc_cleanup[alloc_cleanup_count++] = ptr;
}
void release_fiq(struct fiq_handler *f)
{
if (current_fiq != f) {
printk(KERN_ERR "%s FIQ trying to release %s FIQ\n",
f->name, current_fiq->name);
#ifdef CONFIG_DEBUG_ERRORS
__backtrace();
#endif
return;
}
do
current_fiq = current_fiq->next;
while (current_fiq->fiq_op(current_fiq->dev_id, 0));
}
/*+ backtrace and exit immediately. +*/
void __backtrace_and_die() {
__backtrace();
exit(0);
}
