Dubhe/point-cloud/sfa/utils/misc.py

"""
# -*- coding: utf-8 -*-
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# Author: Nguyen Mau Dung
# DoC: 2020.07.31
# email: nguyenmaudung93.kstn@gmail.com
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# Description: This script for logging

"""

import os
import torch
import time

def make_folder(folder_name):
    if not os.path.exists(folder_name):
        os.makedirs(folder_name)
    # or os.makedirs(folder_name, exist_ok=True)


class AverageMeter(object):
    """Computes and stores the average and current value"""

    def __init__(self, name, fmt=':f'):
        self.name = name
        self.fmt = fmt
        self.reset()

    def reset(self):
        self.val = 0
        self.avg = 0
        self.sum = 0
        self.count = 0

    def update(self, val, n=1):
        self.val = val
        self.sum += val * n
        self.count += n
        self.avg = self.sum / self.count

    def __str__(self):
        fmtstr = '{name} {val' + self.fmt + '} ({avg' + self.fmt + '})'
        return fmtstr.format(**self.__dict__)


class ProgressMeter(object):
    def __init__(self, num_batches, meters, prefix=""):
        self.batch_fmtstr = self._get_batch_fmtstr(num_batches)
        self.meters = meters
        self.prefix = prefix

    def display(self, batch):
        entries = [self.prefix + self.batch_fmtstr.format(batch)]
        entries += [str(meter) for meter in self.meters]
        print('\t'.join(entries))

    def get_message(self, batch):
        entries = [self.prefix + self.batch_fmtstr.format(batch)]
        entries += [str(meter) for meter in self.meters]
        return '\t'.join(entries)

    def _get_batch_fmtstr(self, num_batches):
        num_digits = len(str(num_batches // 1))
        fmt = '{:' + str(num_digits) + 'd}'
        return '[' + fmt + '/' + fmt.format(num_batches) + ']'


def time_synchronized():
    torch.cuda.synchronize() if torch.cuda.is_available() else None
    return time.time()