# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.

"""Megatron global variables."""

import os
import sys
import torch

_GLOBAL_ARGS = None

def get_args():
    """Return arguments."""
    _ensure_var_is_initialized(_GLOBAL_ARGS, 'args')
    return _GLOBAL_ARGS



def set_global_variables(args):
    """Set args, tokenizer, tensorboard-writer, adlr-autoresume, and timers."""

    assert args is not None

    _ensure_var_is_not_initialized(_GLOBAL_ARGS, 'args')
    set_args(args)

    
def set_args(args):
    global _GLOBAL_ARGS
    _GLOBAL_ARGS = args


def _ensure_var_is_initialized(var, name):
    """Make sure the input variable is not None."""
    assert var is not None, '{} is not initialized.'.format(name)


def _ensure_var_is_not_initialized(var, name):
    """Make sure the input variable is not None."""
    assert var is None, '{} is already initialized.'.format(name)