| /* |
| Copyright (c) 2012 Martin Sustrik All rights reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| and/or sell copies of the Software, and to permit persons to whom |
| the Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| IN THE SOFTWARE. |
| */ |
| |
| #ifndef NN_CLOCK_INCLUDED |
| #define NN_CLOCK_INCLUDED |
| |
| #include "int.h" |
| |
| /* Optimised retrieval of the current time. The clock object is not |
| thread-safe. */ |
| |
| struct nn_clock |
| { |
| uint64_t last_tsc; |
| uint64_t last_time; |
| }; |
| |
| /* Initialise the clock object. */ |
| void nn_clock_init (struct nn_clock *self); |
| |
| /* Terminate the clock object. */ |
| void nn_clock_term (struct nn_clock *self); |
| |
| /* Returns current time in milliseconds. */ |
| uint64_t nn_clock_now (struct nn_clock *self); |
| |
| /* Returns an unique timestamp. If the system doesn't support producing |
| timestamps the return value is zero. */ |
| uint64_t nn_clock_timestamp (); |
| |
| #endif |
| |