github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/session/mbtime/mbtime_darwin.go (about)

     1  /*
     2   * Copyright (C) 2020 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package mbtime
    19  
    20  import (
    21  	"golang.org/x/sys/unix"
    22  )
    23  
    24  func nanotime() (uint64, error) {
    25  	var ts unix.Timespec
    26  	if err := unix.ClockGettime(unix.CLOCK_MONOTONIC_RAW, &ts); err != nil {
    27  		if tempSyscallErr(err) {
    28  			if err := unix.ClockGettime(unix.CLOCK_MONOTONIC_RAW, &ts); err != nil {
    29  				return 0, err
    30  			}
    31  		}
    32  	}
    33  	// explicit cast prevents overflow on 32 bit systems
    34  	castedSec := uint64(ts.Sec)
    35  	castedNsec := uint64(ts.Nsec)
    36  	return castedSec*1e9 + castedNsec, nil
    37  }