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//===-- Unittests for sched_getaffinity and sched_setaffinity -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/__support/OSUtil/syscall.h"
#include "src/errno/libc_errno.h"
#include "src/sched/sched_getaffinity.h"
#include "src/sched/sched_setaffinity.h"
#include "test/UnitTest/ErrnoSetterMatcher.h"
#include <sched.h>
#include <sys/syscall.h>
TEST(LlvmLibcSchedAffinityTest, SmokeTest) {
cpu_set_t mask;
libc_errno = 0;
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
pid_t tid = LIBC_NAMESPACE::syscall_impl<pid_t>(SYS_gettid);
ASSERT_GT(tid, pid_t(0));
// We just get and set the same mask.
ASSERT_THAT(LIBC_NAMESPACE::sched_getaffinity(tid, sizeof(cpu_set_t), &mask),
Succeeds(0));
ASSERT_THAT(LIBC_NAMESPACE::sched_setaffinity(tid, sizeof(cpu_set_t), &mask),
Succeeds(0));
}
TEST(LlvmLibcSchedAffinityTest, BadMask) {
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
pid_t tid = LIBC_NAMESPACE::syscall_impl<pid_t>(SYS_gettid);
libc_errno = 0;
ASSERT_THAT(
LIBC_NAMESPACE::sched_getaffinity(tid, sizeof(cpu_set_t), nullptr),
Fails(EFAULT));
libc_errno = 0;
ASSERT_THAT(
LIBC_NAMESPACE::sched_setaffinity(tid, sizeof(cpu_set_t), nullptr),
Fails(EFAULT));
libc_errno = 0;
}
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