You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
51 lines
1.8 KiB
51 lines
1.8 KiB
/*
|
|
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
|
|
|
|
|