plchat/monkeypatch.py

#PlChat is a pleroma chat client
#    Copyright (C) 2021  Knott Eye
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
import os, time, platform
from ctypes import cdll, util

try:
    if platform.system() == "Windows":
        libc_path = "kernel32"
    else:
        libc_path = util.find_library("c")
    libc = cdll.LoadLibrary(libc_path)
    print("Loaded libc from "+libc_path)
except:
    libc_path = None
    libc = None

def posixsleep(t):
    libc.usleep(int(t * 1000000))

def ntsleep(t):
    libc.Sleep(int(t * 1000))

if libc_path == 'libc.so.6':
    sleep = posixsleep
elif libc_path == 'kernel32':
    sleep = ntsleep
elif libc_path == "libSystem.dylib":
    sleep = posixsleep
else:
    print("Couldn't figure out how to use native sleep calls with "+str(libc_path)+", event loop performance may suffer.")
    sleep = time.sleep