mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-06-19 14:15:21 -06:00
0e88c146af
Tested on linux32 (ubuntu 10.10) and win32 (windows XP SP3). git-svn-id: svn://ultimatepp.org/upp/trunk@3264 f0d560ea-af0d-0410-9eb7-867de7ffcac7
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
|
|
Copyright (c) 2007-2010 iMatix Corporation
|
|
|
|
This file is part of 0MQ.
|
|
|
|
0MQ 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
0MQ 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 program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __ZMQ_CLOCK_HPP_INCLUDED__
|
|
#define __ZMQ_CLOCK_HPP_INCLUDED__
|
|
|
|
#include "stdint.hpp"
|
|
|
|
namespace zmq
|
|
{
|
|
|
|
class clock_t
|
|
{
|
|
public:
|
|
|
|
clock_t ();
|
|
~clock_t ();
|
|
|
|
// CPU's timestamp counter. Returns 0 if it's not available.
|
|
static uint64_t rdtsc ();
|
|
|
|
// High precision timestamp.
|
|
static uint64_t now_us ();
|
|
|
|
// Low precision timestamp. In tight loops generating it can be
|
|
// 10 to 100 times faster than the high precision timestamp.
|
|
uint64_t now_ms ();
|
|
|
|
private:
|
|
|
|
// TSC timestamp of when last time measurement was made.
|
|
uint64_t last_tsc;
|
|
|
|
// Physical time corresponding to the TSC above (in milliseconds).
|
|
uint64_t last_time;
|
|
|
|
clock_t (const clock_t&);
|
|
const clock_t &operator = (const clock_t&);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|