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gVisor bot
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <sched.h>
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#include "gtest/gtest.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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TEST(GetcpuTest, IsValidCpuStress) {
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const int num_cpus = NumCPUs();
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absl::Time deadline = absl::Now() + absl::Seconds(10);
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while (absl::Now() < deadline) {
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int cpu;
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ASSERT_THAT(cpu = sched_getcpu(), SyscallSucceeds());
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ASSERT_LT(cpu, num_cpus);
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}
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}
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TEST(GetcpuTest, IsValidCpu) {
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const int num_cpus = NumCPUs();
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cpu_set_t orig_set;
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ASSERT_THAT(sched_getaffinity(getpid(), sizeof(orig_set), &orig_set),
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SyscallSucceeds());
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for (int i = 0; i < num_cpus; i++) {
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if (CPU_ISSET(i, &orig_set) == 0) continue;
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cpu_set_t set = {};
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int cpu;
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CPU_SET(i, &set);
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ASSERT_THAT(sched_setaffinity(getpid(), sizeof(set), &set),
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SyscallSucceeds());
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ASSERT_THAT(cpu = sched_getcpu(), SyscallSucceeds());
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// sched_setaffinity doesn't work if Kernel.useHostCores is true.
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ASSERT_THAT(sched_getaffinity(getpid(), sizeof(set), &set),
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SyscallSucceeds());
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ASSERT_NE(CPU_ISSET(cpu, &set), 0);
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}
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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