| /* |
| * Copyright (C) 2018 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. |
| */ |
| |
| #pragma once |
| |
| /* Augment time.h with trusty-specific functions. */ |
| #include <time.h> |
| |
| #include <stdint.h> |
| |
| /* Don't use convenience macros here, it will polute the namespace. */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Prefixed with trusty_ because the signatures do not match POSIX. */ |
| int trusty_gettime(clockid_t clock_id, int64_t* time); |
| int trusty_nanosleep(clockid_t clock_id, uint32_t flags, uint64_t sleep_time); |
| |
| /* |
| * The trusty_nanosleep() can sleep longer than expected in certain scenarios |
| * (like CPUIdle is enabled). trusty_nanodelay() is less likely to oversleep, |
| * but at the cost of additional CPU usage. Use trusty_nanodelay() when working |
| * with hardware with precise timing requirements. But avoid using |
| * trusty_nanodelay() with large sleep_time values. |
| */ |
| int trusty_nanodelay(clockid_t clock_id, uint32_t flags, uint64_t sleep_time); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
