42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/*!
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* Copyright (c) 2014-2019 by Contributors
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* \file timer.h
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* \brief This file defines the utils for timing
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* \author Tianqi Chen, Nacho, Tianyi
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*/
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#ifndef RABIT_INTERNAL_TIMER_H_
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#define RABIT_INTERNAL_TIMER_H_
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#include <time.h>
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#ifdef __MACH__
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#include <mach/clock.h>
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#include <mach/mach.h>
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#endif // __MACH__
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#include "./utils.h"
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namespace rabit {
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namespace utils {
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/*!
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* \brief return time in seconds, not cross platform, avoid to use this in most places
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*/
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inline double GetTime(void) {
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#ifdef __MACH__
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clock_serv_t cclock;
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mach_timespec_t mts;
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host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
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utils::Check(clock_get_time(cclock, &mts) == 0, "failed to get time");
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mach_port_deallocate(mach_task_self(), cclock);
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return static_cast<double>(mts.tv_sec) + static_cast<double>(mts.tv_nsec) * 1e-9;
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#else
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#if defined(__unix__) || defined(__linux__)
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timespec ts;
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utils::Check(clock_gettime(CLOCK_REALTIME, &ts) == 0, "failed to get time");
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return static_cast<double>(ts.tv_sec) + static_cast<double>(ts.tv_nsec) * 1e-9;
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#else
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return static_cast<double>(time(NULL));
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#endif // defined(__unix__) || defined(__linux__)
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#endif // __MACH__
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}
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} // namespace utils
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} // namespace rabit
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#endif // RABIT_INTERNAL_TIMER_H_
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