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[COMMITTED PATCH] Test that pthread_create diagnoses invalid scheduling parameters.
- From: Roland McGrath <roland at hack dot frob dot com>
- To: "GNU C. Library" <libc-alpha at sourceware dot org>
- Date: Wed, 19 Nov 2014 17:33:41 -0800 (PST)
- Subject: [COMMITTED PATCH] Test that pthread_create diagnoses invalid scheduling parameters.
- Authentication-results: sourceware.org; auth=none
Tested x86_64-linux-gnu.
Thanks,
Roland
2014-11-19 Roland McGrath <roland@hack.frob.com>
* nptl/tst-bad-schedattr.c: New file.
* nptl/Makefile (tests): Add it.
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -270,7 +270,8 @@ tests = tst-typesizes \
tst-vfork1 tst-vfork2 tst-vfork1x tst-vfork2x \
tst-getpid1 tst-getpid2 tst-getpid3 \
tst-setuid3 \
- tst-initializers1 $(patsubst %,tst-initializers1-%,c89 gnu89 c99 gnu99)
+ tst-initializers1 $(addprefix tst-initializers1-,c89 gnu89 c99 gnu99) \
+ tst-bad-schedattr
xtests = tst-setuid1 tst-setuid1-static tst-setuid2 \
tst-mutexpp1 tst-mutexpp6 tst-mutexpp10
test-srcs = tst-oddstacklimit
--- /dev/null
+++ b/nptl/tst-bad-schedattr.c
@@ -0,0 +1,97 @@
+/* Test that pthread_create diagnoses invalid scheduling parameters.
+ Copyright (C) 2014 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 <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+static void *
+thread_function (void *arg)
+{
+ abort ();
+}
+
+
+static int
+do_test (void)
+{
+#if !defined SCHED_FIFO || !defined SCHED_OTHER
+ puts ("SCHED_FIFO or SCHED_OTHER not available at compile time");
+ return 0; /* 77 */
+#else
+
+ int err;
+
+#define TRY(func, arglist) \
+ if ((err = func arglist) != 0) \
+ { \
+ printf ("%s: %s\n", #func, strerror (err)); \
+ return 2; \
+ }
+
+ int fifo_max = sched_get_priority_max (SCHED_FIFO);
+ if (fifo_max == -1)
+ {
+ assert (errno == ENOTSUP || errno == ENOSYS);
+ puts ("SCHED_FIFO not supported, cannot test");
+ return 0; /* 77 */
+ }
+
+ int other_max = sched_get_priority_max (SCHED_OTHER);
+ if (other_max == -1)
+ {
+ assert (errno == ENOTSUP || errno == ENOSYS);
+ puts ("SCHED_OTHER not supported, cannot test");
+ return 0; /* 77 */
+ }
+
+ assert (fifo_max > other_max);
+
+ pthread_attr_t attr;
+ TRY (pthread_attr_init, (&attr));
+ TRY (pthread_attr_setinheritsched, (&attr, PTHREAD_EXPLICIT_SCHED));
+ TRY (pthread_attr_setschedpolicy, (&attr, SCHED_FIFO));
+
+ /* This value is chosen so as to be valid for SCHED_FIFO but invalid for
+ SCHED_OTHER. */
+ struct sched_param param = { .sched_priority = other_max + 1 };
+ TRY (pthread_attr_setschedparam, (&attr, ¶m));
+
+ TRY (pthread_attr_setschedpolicy, (&attr, SCHED_OTHER));
+
+ /* Now ATTR has a sched_param that is invalid for its policy. */
+ pthread_t th;
+ err = pthread_create (&th, &attr, &thread_function, NULL);
+ if (err != EINVAL)
+ {
+ printf ("pthread_create returned %d (%s), expected %d (EINVAL: %s)\n",
+ err, strerror (err), EINVAL, strerror (EINVAL));
+ return 1;
+ }
+
+ return 0;
+#endif
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"