/*
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* Copyright (C) 2016 The Android Open Source Project
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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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*/
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#include "chre/platform/system_time.h"
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#include <cerrno>
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#include <cstring>
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#include <ctime>
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#include "chre/platform/assert.h"
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#include "chre/platform/log.h"
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namespace chre {
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Nanoseconds SystemTime::getMonotonicTime() {
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struct timespec timeNow;
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if (clock_gettime(CLOCK_MONOTONIC, &timeNow)) {
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CHRE_ASSERT_LOG(false, "Failed to obtain time with error: %s",
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strerror(errno));
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return Nanoseconds(UINT64_MAX);
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}
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// The C++11 spec guarantees that tv_sec and tv_nsec only have values >= 0 and
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// [0, 999999999]. It is safe to static cast these to their unsigned
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// counterpart.
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return Seconds(static_cast<uint64_t>(timeNow.tv_sec))
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+ Nanoseconds(static_cast<uint64_t>(timeNow.tv_nsec));
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}
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int64_t SystemTime::getEstimatedHostTimeOffset() {
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return 0;
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}
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} // namespace chre
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