75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
// Copyright 2018 Google LLC
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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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#ifndef GVISOR_TEST_UTIL_TIMER_UTIL_H_
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#define GVISOR_TEST_UTIL_TIMER_UTIL_H_
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#include <errno.h>
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#include <sys/time.h>
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#include <functional>
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#include "gmock/gmock.h"
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#include "absl/time/time.h"
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#include "test/util/cleanup.h"
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#include "test/util/logging.h"
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#include "test/util/posix_error.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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// MonotonicTimer is a simple timer that uses a monotic clock.
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class MonotonicTimer {
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public:
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MonotonicTimer() {}
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absl::Duration Duration() {
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struct timespec ts;
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TEST_CHECK(clock_gettime(CLOCK_MONOTONIC, &ts) == 0);
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return absl::TimeFromTimespec(ts) - start_;
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}
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void Start() {
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struct timespec ts;
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TEST_CHECK(clock_gettime(CLOCK_MONOTONIC, &ts) == 0);
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start_ = absl::TimeFromTimespec(ts);
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}
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protected:
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absl::Time start_;
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};
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// Sets the given itimer and returns a cleanup function that restores the
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// previous itimer when it goes out of scope.
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inline PosixErrorOr<Cleanup> ScopedItimer(int which,
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struct itimerval const& new_value) {
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struct itimerval old_value;
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int rc = setitimer(which, &new_value, &old_value);
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MaybeSave();
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if (rc < 0) {
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return PosixError(errno, "setitimer failed");
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}
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return Cleanup(std::function<void(void)>([which, old_value] {
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EXPECT_THAT(setitimer(which, &old_value, nullptr), SyscallSucceeds());
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}));
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}
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// Returns the current time.
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absl::Time Now(clockid_t id);
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} // namespace testing
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} // namespace gvisor
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#endif // GVISOR_TEST_UTIL_TIMER_UTIL_H_
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