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Add more tests of pthread attributes initial values

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There are various existing tests that call pthread_attr_init and then
verify properties of the resulting initial values retrieved with
pthread_attr_get* functions.  However, those are missing coverage of
the initial values retrieved with pthread_attr_getschedparam and
pthread_attr_getstacksize.  Add testing for initial values from those
functions as well.

(tst-attr2 covers pthread_attr_getdetachstate,
pthread_attr_getguardsize, pthread_attr_getinheritsched,
pthread_attr_getschedpolicy, pthread_attr_getscope.  tst-attr3 covers
some of those together with pthread_attr_getaffinity_np.
tst-pthread-attr-sigmask covers pthread_attr_getsigmask_np.
pthread_attr_getstack has unspecified results if called before the
relevant attributes have been set, while pthread_attr_getstackaddr is
deprecated.)

Tested for x86_64.
This commit is contained in:
Joseph Myers 2024-10-29 17:35:21 +00:00
parent 7fe1fde499
commit 36b549924b
2 changed files with 63 additions and 0 deletions
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1
nptl/Makefile
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@ -276,6 +276,7 @@ LDLIBS-tst-minstack-throw = -lstdc++
tests = \
tst-attr2 \
tst-attr3 \
tst-attr4 \
tst-cancel4_1 \
tst-cancel4_2 \
tst-cancel7 \

62
nptl/tst-attr4.c Normal file
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@ -0,0 +1,62 @@
/* Test initial values of pthread attributes.
Copyright (C) 2024 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
<https://www.gnu.org/licenses/>. */
#include <sched.h>
#include <stdio.h>
#include <stdint.h>
#include <support/check.h>
#include <support/test-driver.h>
#include <support/xthread.h>
int
do_test (void)
{
pthread_attr_t a;
int ret;
xpthread_attr_init (&a);
size_t stacksize = 0;
verbose_printf ("testing default stack size\n");
ret = pthread_attr_getstacksize (&a, &stacksize);
TEST_VERIFY_EXIT (ret == 0);
TEST_VERIFY (stacksize >= PTHREAD_STACK_MIN);
TEST_VERIFY (stacksize <= SIZE_MAX / 2);
int policy;
verbose_printf ("testing default scheduler parameters\n");
ret = pthread_attr_getschedpolicy (&a, &policy);
TEST_VERIFY_EXIT (ret == 0);
struct sched_param param;
ret = pthread_attr_getschedparam (&a, &param);
TEST_VERIFY_EXIT (ret == 0);
int min = sched_get_priority_min (policy);
TEST_VERIFY (min != -1);
int max = sched_get_priority_max (policy);
TEST_VERIFY (max != -1);
TEST_VERIFY (param.sched_priority >= min);
TEST_VERIFY (param.sched_priority <= max);
xpthread_attr_destroy (&a);
return 0;
}
#include <support/test-driver.c>