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-rw-r--r--REORG.TODO/nptl/tst-cancel17.c356
1 files changed, 356 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/tst-cancel17.c b/REORG.TODO/nptl/tst-cancel17.c
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+/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@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 <aio.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+static pthread_barrier_t b;
+
+
+/* Cleanup handling test. */
+static int cl_called;
+
+static void
+cl (void *arg)
+{
+ ++cl_called;
+}
+
+
+static void *
+tf (void *arg)
+{
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("tf: barrier_wait failed");
+ exit (1);
+ }
+
+ pthread_cleanup_push (cl, NULL);
+
+ const struct aiocb *l[1] = { arg };
+
+ TEMP_FAILURE_RETRY (aio_suspend (l, 1, NULL));
+
+ pthread_cleanup_pop (0);
+
+ puts ("tf: aio_suspend returned");
+
+ exit (1);
+}
+
+
+static void *
+tf2 (void *arg)
+{
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("tf2: barrier_wait failed");
+ exit (1);
+ }
+
+ pthread_cleanup_push (cl, NULL);
+
+ const struct aiocb *l[1] = { arg };
+ struct timespec ts = { .tv_sec = 1000, .tv_nsec = 0 };
+
+ TEMP_FAILURE_RETRY (aio_suspend (l, 1, &ts));
+
+ pthread_cleanup_pop (0);
+
+ puts ("tf2: aio_suspend returned");
+
+ exit (1);
+}
+
+
+static int
+do_test (void)
+{
+ int fds[2];
+ if (pipe (fds) != 0)
+ {
+ puts ("pipe failed");
+ return 1;
+ }
+
+ struct aiocb a, a2, *ap;
+ char mem[1];
+ memset (&a, '\0', sizeof (a));
+ a.aio_fildes = fds[0];
+ a.aio_buf = mem;
+ a.aio_nbytes = sizeof (mem);
+ if (aio_read (&a) != 0)
+ {
+ puts ("aio_read failed");
+ return 1;
+ }
+
+ if (pthread_barrier_init (&b, NULL, 2) != 0)
+ {
+ puts ("barrier_init failed");
+ return 1;
+ }
+
+ pthread_t th;
+ if (pthread_create (&th, NULL, tf, &a) != 0)
+ {
+ puts ("1st create failed");
+ return 1;
+ }
+
+ int r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("barrier_wait failed");
+ exit (1);
+ }
+
+ struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
+ while (nanosleep (&ts, &ts) != 0)
+ continue;
+
+ puts ("going to cancel tf in-time");
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("1st cancel failed");
+ return 1;
+ }
+
+ void *status;
+ if (pthread_join (th, &status) != 0)
+ {
+ puts ("1st join failed");
+ return 1;
+ }
+ if (status != PTHREAD_CANCELED)
+ {
+ puts ("1st thread not canceled");
+ return 1;
+ }
+
+ if (cl_called == 0)
+ {
+ puts ("tf cleanup handler not called");
+ return 1;
+ }
+ if (cl_called > 1)
+ {
+ puts ("tf cleanup handler called more than once");
+ return 1;
+ }
+
+ cl_called = 0;
+
+ if (pthread_create (&th, NULL, tf2, &a) != 0)
+ {
+ puts ("2nd create failed");
+ return 1;
+ }
+
+ r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("2nd barrier_wait failed");
+ exit (1);
+ }
+
+ ts.tv_sec = 0;
+ ts.tv_nsec = 100000000;
+ while (nanosleep (&ts, &ts) != 0)
+ continue;
+
+ puts ("going to cancel tf2 in-time");
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("2nd cancel failed");
+ return 1;
+ }
+
+ if (pthread_join (th, &status) != 0)
+ {
+ puts ("2nd join failed");
+ return 1;
+ }
+ if (status != PTHREAD_CANCELED)
+ {
+ puts ("2nd thread not canceled");
+ return 1;
+ }
+
+ if (cl_called == 0)
+ {
+ puts ("tf2 cleanup handler not called");
+ return 1;
+ }
+ if (cl_called > 1)
+ {
+ puts ("tf2 cleanup handler called more than once");
+ return 1;
+ }
+
+ puts ("in-time cancellation succeeded");
+
+ ap = &a;
+ if (aio_cancel (fds[0], &a) != AIO_CANCELED)
+ {
+ puts ("aio_cancel failed");
+ /* If aio_cancel failed, we cannot reuse aiocb a. */
+ ap = &a2;
+ }
+
+
+ cl_called = 0;
+
+ size_t len2 = fpathconf (fds[1], _PC_PIPE_BUF);
+ size_t page_size = sysconf (_SC_PAGESIZE);
+ len2 = 20 * (len2 < page_size ? page_size : len2) + sizeof (mem) + 1;
+ char *mem2 = malloc (len2);
+ if (mem2 == NULL)
+ {
+ puts ("could not allocate memory for pipe write");
+ return 1;
+ }
+
+ memset (ap, '\0', sizeof (*ap));
+ ap->aio_fildes = fds[1];
+ ap->aio_buf = mem2;
+ ap->aio_nbytes = len2;
+ if (aio_write (ap) != 0)
+ {
+ puts ("aio_write failed");
+ return 1;
+ }
+
+ if (pthread_create (&th, NULL, tf, ap) != 0)
+ {
+ puts ("3rd create failed");
+ return 1;
+ }
+
+ puts ("going to cancel tf early");
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("3rd cancel failed");
+ return 1;
+ }
+
+ r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("3rd barrier_wait failed");
+ exit (1);
+ }
+
+ if (pthread_join (th, &status) != 0)
+ {
+ puts ("3rd join failed");
+ return 1;
+ }
+ if (status != PTHREAD_CANCELED)
+ {
+ puts ("3rd thread not canceled");
+ return 1;
+ }
+
+ if (cl_called == 0)
+ {
+ puts ("tf cleanup handler not called");
+ return 1;
+ }
+ if (cl_called > 1)
+ {
+ puts ("tf cleanup handler called more than once");
+ return 1;
+ }
+
+ cl_called = 0;
+
+ if (pthread_create (&th, NULL, tf2, ap) != 0)
+ {
+ puts ("4th create failed");
+ return 1;
+ }
+
+ puts ("going to cancel tf2 early");
+ if (pthread_cancel (th) != 0)
+ {
+ puts ("4th cancel failed");
+ return 1;
+ }
+
+ r = pthread_barrier_wait (&b);
+ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+ {
+ puts ("4th barrier_wait failed");
+ exit (1);
+ }
+
+ if (pthread_join (th, &status) != 0)
+ {
+ puts ("4th join failed");
+ return 1;
+ }
+ if (status != PTHREAD_CANCELED)
+ {
+ puts ("4th thread not canceled");
+ return 1;
+ }
+
+ if (cl_called == 0)
+ {
+ puts ("tf2 cleanup handler not called");
+ return 1;
+ }
+ if (cl_called > 1)
+ {
+ puts ("tf2 cleanup handler called more than once");
+ return 1;
+ }
+
+ puts ("early cancellation succeeded");
+
+ if (ap == &a2)
+ {
+ /* The aio_read(&a) was not canceled because the read request was
+ already in progress. In the meanwhile aio_write(ap) wrote something
+ to the pipe and the read request either has already been finished or
+ is able to read the requested byte.
+ Wait for the read request before returning from this function because
+ the return value and error code from the read syscall will be written
+ to the struct aiocb a, which lies on the stack of this function.
+ Otherwise the stack from subsequent function calls - e.g. _dl_fini -
+ will be corrupted, which can lead to undefined behaviour like a
+ segmentation fault. */
+ const struct aiocb *l[1] = { &a };
+ TEMP_FAILURE_RETRY (aio_suspend(l, 1, NULL));
+ }
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
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