| /* |
| * |
| * Embedded Linux library |
| * |
| * Copyright (C) 2019 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifndef __ELL_TIME_H |
| #define __ELL_TIME_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| #define L_USEC_PER_SEC 1000000ULL |
| #define L_MSEC_PER_SEC 1000ULL |
| #define L_USEC_PER_MSEC 1000ULL |
| #define L_NSEC_PER_SEC 1000000000ULL |
| #define L_NSEC_PER_MSEC 1000000ULL |
| #define L_NSEC_PER_USEC 1000ULL |
| #define L_TIME_INVALID ((uint64_t) -1) |
| |
| uint64_t l_time_now(void); |
| |
| static inline bool l_time_after(uint64_t a, uint64_t b) |
| { |
| return a > b; |
| } |
| |
| static inline bool l_time_before(uint64_t a, uint64_t b) |
| { |
| return l_time_after(b, a); |
| } |
| |
| static inline uint64_t l_time_offset(uint64_t time, uint64_t offset) |
| { |
| /* check overflow */ |
| if (offset > UINT64_MAX - time) |
| return UINT64_MAX; |
| |
| return time + offset; |
| } |
| |
| static inline uint64_t l_time_diff(uint64_t a, uint64_t b) |
| { |
| return (a < b) ? b - a : a - b; |
| } |
| |
| static inline uint64_t l_time_to_secs(uint64_t time) |
| { |
| return time / L_USEC_PER_SEC; |
| } |
| |
| static inline uint64_t l_time_to_msecs(uint64_t time) |
| { |
| return time / L_USEC_PER_MSEC; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __ELL_TIME_H */ |