diff options
Diffstat (limited to 'resolv/tst-res_hconf_reorder.c')
-rw-r--r-- | resolv/tst-res_hconf_reorder.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/resolv/tst-res_hconf_reorder.c b/resolv/tst-res_hconf_reorder.c deleted file mode 100644 index 20e5a5a448..0000000000 --- a/resolv/tst-res_hconf_reorder.c +++ /dev/null @@ -1,113 +0,0 @@ -/* BZ #17977 _res_hconf_reorder_addrs test. - - Copyright (C) 2015-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <dlfcn.h> -#include <pthread.h> -#include <netdb.h> -#include <netinet/in.h> -#include <sys/socket.h> - -static struct timespec ts; - -/* The first thread that gets a lock in _res_hconf_reorder_addrs() - should hold the lock long enough to make two other threads blocked. - This is achieved by slowing down realloc(3) that is called several times - by _res_hconf_reorder_addrs(). */ - -void * -realloc (void *ptr, size_t len) -{ - static void *(*fun) (void *, size_t); - - if (!fun) - fun = dlsym (RTLD_NEXT, "realloc"); - - if (ts.tv_nsec) - nanosleep (&ts, NULL); - - return (*fun) (ptr, len); -} - -static void * -resolve (void *arg) -{ - struct in_addr addr; - struct hostent ent; - struct hostent *result; - int err; - char buf[1024]; - - addr.s_addr = htonl (INADDR_LOOPBACK); - (void) gethostbyaddr_r ((void *) &addr, sizeof (addr), AF_INET, - &ent, buf, sizeof (buf), &result, &err); - return arg; -} - -static int -do_test (void) -{ - #define N 3 - pthread_t thr[N]; - unsigned int i; - int result = 0; - - /* turn on realloc slowdown */ - ts.tv_nsec = 100000000; - - for (i = 0; i < N; ++i) - { - int rc = pthread_create (&thr[i], NULL, resolve, NULL); - - if (rc) - { - printf ("pthread_create: %s\n", strerror(rc)); - exit (1); - } - } - - for (i = 0; i < N; ++i) - { - void *retval; - int rc = pthread_join (thr[i], &retval); - - if (rc) - { - printf ("pthread_join: %s\n", strerror(rc)); - exit (1); - } - if (retval) - { - printf ("thread %u exit status %p\n", i, retval); - result = 1; - } - } - - /* turn off realloc slowdown, no longer needed */ - ts.tv_nsec = 0; - - return result; -} - -#define TEST_FUNCTION do_test () -#include "../test-skeleton.c" |