| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "chre/platform/system_time.h" |
| |
| #include <cerrno> |
| #include <cstring> |
| #include <ctime> |
| |
| #include "chre/platform/assert.h" |
| #include "chre/platform/log.h" |
| |
| namespace chre { |
| |
| Nanoseconds SystemTime::getMonotonicTime() { |
| struct timespec timeNow; |
| if (clock_gettime(CLOCK_MONOTONIC, &timeNow)) { |
| CHRE_ASSERT_LOG(false, "Failed to obtain time with error: %s", |
| strerror(errno)); |
| return Nanoseconds(UINT64_MAX); |
| } |
| |
| // The C++11 spec guarantees that tv_sec and tv_nsec only have values >= 0 and |
| // [0, 999999999]. It is safe to static cast these to their unsigned |
| // counterpart. |
| return Seconds(static_cast<uint64_t>(timeNow.tv_sec)) + |
| Nanoseconds(static_cast<uint64_t>(timeNow.tv_nsec)); |
| } |
| |
| int64_t SystemTime::getEstimatedHostTimeOffset() { |
| return 0; |
| } |
| |
| } // namespace chre |