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authorSteve Dower <steve.dower@python.org>2019-09-13 16:40:19 (GMT)
committerMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>2019-09-13 16:40:19 (GMT)
commitf2b7556ef851ac85e7cbf189d1b29fdeb9539b88 (patch)
tree9edb116c3709bec6acbadf309788da6d4e8a9771
parent5b9ff7a0dcb16d6f5c3cd4f1f52e0ca6a4bde586 (diff)
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bpo-38092: Reduce overhead when using multiprocessing in a Windows virtual environment (GH-16098)
https://bugs.python.org/issue38092
-rw-r--r--Lib/multiprocessing/popen_spawn_win32.py2
-rw-r--r--Lib/multiprocessing/spawn.py2
-rw-r--r--Misc/NEWS.d/next/Windows/2019-09-13-14-11-42.bpo-38092.x31ehI.rst1
3 files changed, 3 insertions, 2 deletions
diff --git a/Lib/multiprocessing/popen_spawn_win32.py b/Lib/multiprocessing/popen_spawn_win32.py
index ea9c555..9c4098d 100644
--- a/Lib/multiprocessing/popen_spawn_win32.py
+++ b/Lib/multiprocessing/popen_spawn_win32.py
@@ -72,7 +72,7 @@ class Popen(object):
try:
hp, ht, pid, tid = _winapi.CreateProcess(
python_exe, cmd,
- env, None, False, 0, None, None, None)
+ None, None, False, 0, env, None, None)
_winapi.CloseHandle(ht)
except:
_winapi.CloseHandle(rhandle)
diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
index 7cc129e..075f345 100644
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -36,7 +36,7 @@ else:
if WINSERVICE:
_python_exe = os.path.join(sys.exec_prefix, 'python.exe')
else:
- _python_exe = sys.executable
+ _python_exe = sys._base_executable
def set_executable(exe):
global _python_exe
diff --git a/Misc/NEWS.d/next/Windows/2019-09-13-14-11-42.bpo-38092.x31ehI.rst b/Misc/NEWS.d/next/Windows/2019-09-13-14-11-42.bpo-38092.x31ehI.rst
new file mode 100644
index 0000000..48e83c8
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2019-09-13-14-11-42.bpo-38092.x31ehI.rst
@@ -0,0 +1 @@
+Reduce overhead when using multiprocessing in a Windows virtual environment.