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glibc/nptl/tst-cancel20.c
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/* Copyright (C) 2003-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
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 <pthread.h> | |
#include <signal.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
static int fd[4]; | |
static pthread_barrier_t b; | |
volatile int in_sh_body; | |
unsigned long cleanups; | |
static void | |
cl (void *arg) | |
{ | |
cleanups = (cleanups << 4) | (long) arg; | |
} | |
static void __attribute__((noinline)) | |
sh_body (void) | |
{ | |
char c; | |
pthread_cleanup_push (cl, (void *) 1L); | |
in_sh_body = 1; | |
if (read (fd[2], &c, 1) == 1) | |
{ | |
puts ("read succeeded"); | |
exit (1); | |
} | |
pthread_cleanup_pop (0); | |
} | |
static void | |
sh (int sig) | |
{ | |
pthread_cleanup_push (cl, (void *) 2L); | |
sh_body (); | |
in_sh_body = 0; | |
pthread_cleanup_pop (0); | |
} | |
static void __attribute__((noinline)) | |
tf_body (void) | |
{ | |
char c; | |
pthread_cleanup_push (cl, (void *) 3L); | |
int r = pthread_barrier_wait (&b); | |
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) | |
{ | |
puts ("child thread: barrier_wait failed"); | |
exit (1); | |
} | |
if (read (fd[0], &c, 1) == 1) | |
{ | |
puts ("read succeeded"); | |
exit (1); | |
} | |
read (fd[0], &c, 1); | |
pthread_cleanup_pop (0); | |
} | |
static void * | |
tf (void *arg) | |
{ | |
pthread_cleanup_push (cl, (void *) 4L); | |
tf_body (); | |
pthread_cleanup_pop (0); | |
return NULL; | |
} | |
static int | |
do_one_test (void) | |
{ | |
in_sh_body = 0; | |
cleanups = 0; | |
if (pipe (fd) != 0 || pipe (fd + 2) != 0) | |
{ | |
puts ("pipe failed"); | |
return 1; | |
} | |
pthread_t th; | |
if (pthread_create (&th, NULL, tf, NULL) != 0) | |
{ | |
puts ("create failed"); | |
return 1; | |
} | |
int r = pthread_barrier_wait (&b); | |
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) | |
{ | |
puts ("parent thread: barrier_wait failed"); | |
return 1; | |
} | |
sleep (1); | |
r = pthread_kill (th, SIGHUP); | |
if (r) | |
{ | |
errno = r; | |
printf ("pthread_kill failed %m\n"); | |
return 1; | |
} | |
while (in_sh_body == 0) | |
sleep (1); | |
if (pthread_cancel (th) != 0) | |
{ | |
puts ("cancel failed"); | |
return 1; | |
} | |
void *ret; | |
if (pthread_join (th, &ret) != 0) | |
{ | |
puts ("join failed"); | |
return 1; | |
} | |
if (ret != PTHREAD_CANCELED) | |
{ | |
puts ("result is wrong"); | |
return 1; | |
} | |
if (cleanups != 0x1234L) | |
{ | |
printf ("called cleanups %lx\n", cleanups); | |
return 1; | |
} | |
/* The pipe closing must be issued after the cancellation handling to avoid | |
a race condition where the cancellation runs after both pipe ends are | |
closed. In this case the read syscall returns EOF and the cancellation | |
must not act. */ | |
close (fd[0]); | |
close (fd[1]); | |
close (fd[2]); | |
close (fd[3]); | |
return 0; | |
} | |
static int | |
do_test (void) | |
{ | |
stack_t ss; | |
ss.ss_sp = malloc (2 * SIGSTKSZ); | |
if (ss.ss_sp == NULL) | |
{ | |
puts ("failed to allocate alternate stack"); | |
return 1; | |
} | |
ss.ss_flags = 0; | |
ss.ss_size = 2 * SIGSTKSZ; | |
if (sigaltstack (&ss, NULL) < 0) | |
{ | |
printf ("sigaltstack failed %m\n"); | |
return 1; | |
} | |
if (pthread_barrier_init (&b, NULL, 2) != 0) | |
{ | |
puts ("barrier_init failed"); | |
return 1; | |
} | |
struct sigaction sa; | |
sa.sa_handler = sh; | |
sigemptyset (&sa.sa_mask); | |
sa.sa_flags = 0; | |
if (sigaction (SIGHUP, &sa, NULL) != 0) | |
{ | |
puts ("sigaction failed"); | |
return 1; | |
} | |
puts ("sa_flags = 0 test"); | |
if (do_one_test ()) | |
return 1; | |
sa.sa_handler = sh; | |
sigemptyset (&sa.sa_mask); | |
sa.sa_flags = SA_ONSTACK; | |
if (sigaction (SIGHUP, &sa, NULL) != 0) | |
{ | |
puts ("sigaction failed"); | |
return 1; | |
} | |
puts ("sa_flags = SA_ONSTACK test"); | |
if (do_one_test ()) | |
return 1; | |
#ifdef SA_SIGINFO | |
sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh; | |
sigemptyset (&sa.sa_mask); | |
sa.sa_flags = SA_SIGINFO; | |
if (sigaction (SIGHUP, &sa, NULL) != 0) | |
{ | |
puts ("sigaction failed"); | |
return 1; | |
} | |
puts ("sa_flags = SA_SIGINFO test"); | |
if (do_one_test ()) | |
return 1; | |
sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh; | |
sigemptyset (&sa.sa_mask); | |
sa.sa_flags = SA_SIGINFO | SA_ONSTACK; | |
if (sigaction (SIGHUP, &sa, NULL) != 0) | |
{ | |
puts ("sigaction failed"); | |
return 1; | |
} | |
puts ("sa_flags = SA_SIGINFO|SA_ONSTACK test"); | |
if (do_one_test ()) | |
return 1; | |
#endif | |
return 0; | |
} | |
#define TIMEOUT 40 | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |