From: Ben Darnell <ben@bendarnell.com>
Date: Sun, 20 May 2018 03:28:45 +0000 (-0400)
Subject: autoreload: Improve autoreload wrapper on windows
X-Git-Tag: v5.1.0b1~11^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=feee98fc1293f8a5a006ce7556c8f76a6081dbce;p=thirdparty%2Ftornado.git

autoreload: Improve autoreload wrapper on windows

On platforms without execv(), we must spawn a separate subprocess.
This breaks down when an internal autoreload is firing in a wrapped
process, since the internal reload raises an exception with the
wrapper catches (triggering a second reload and another copy of the
process).
---

diff --git a/tornado/autoreload.py b/tornado/autoreload.py
index 1c8bd88c8..7d69474a3 100644
--- a/tornado/autoreload.py
+++ b/tornado/autoreload.py
@@ -233,7 +233,7 @@ def _reload():
                                         os.environ.get("PYTHONPATH", ""))
     if not _has_execv:
         subprocess.Popen([sys.executable] + argv)
-        sys.exit(0)
+        os._exit(0)
     else:
         try:
             os.execv(sys.executable, [sys.executable] + argv)