import sys
import threading

_console_lock = threading.Lock()

def _log(prefix: str, message: str):
    with _console_lock:
        print(prefix + ": " + message)

def info(message: str):
    _log("INFO", message)

def warning(message: str):
    _log("WARNING", message)

def error(message: str):
    _log("ERROR", message)
    sys.exit(1)