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Add lock for thread-safe access to winterm #229

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Add lock for thread-safe access to winterm #229

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20 changes: 13 additions & 7 deletions colorama/ansitowin32.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
import re
import sys
import os
from threading import Lock

from .ansi import AnsiFore, AnsiBack, AnsiStyle, Style
from .winterm import WinTerm, WinColor, WinStyle
Expand All @@ -12,6 +13,7 @@
if windll is not None:
winterm = WinTerm()

winterm_lock = Lock()

class StreamWrapper(object):
'''
Expand Down Expand Up @@ -158,13 +160,17 @@ def get_win32_calls(self):
return dict()

def write(self, text):
if self.strip or self.convert:
self.write_and_convert(text)
else:
self.wrapped.write(text)
self.wrapped.flush()
if self.autoreset:
self.reset_all()
try:
winterm_lock.acquire()
if self.strip or self.convert:
self.write_and_convert(text)
else:
self.wrapped.write(text)
self.wrapped.flush()
if self.autoreset:
self.reset_all()
finally:
winterm_lock.release()


def reset_all(self):
Expand Down