diff options
Diffstat (limited to 'Lib/multiprocessing/popen_forkserver.py')
| -rw-r--r-- | Lib/multiprocessing/popen_forkserver.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Lib/multiprocessing/popen_forkserver.py b/Lib/multiprocessing/popen_forkserver.py index a51a2771aed..a56eb9bf110 100644 --- a/Lib/multiprocessing/popen_forkserver.py +++ b/Lib/multiprocessing/popen_forkserver.py @@ -49,7 +49,11 @@ class Popen(popen_fork.Popen): set_spawning_popen(None) self.sentinel, w = forkserver.connect_to_new_process(self._fds) - self.finalizer = util.Finalize(self, os.close, (self.sentinel,)) + # Keep a duplicate of the data pipe's write end as a sentinel of the + # parent process used by the child process. + _parent_w = os.dup(w) + self.finalizer = util.Finalize(self, util.close_fds, + (_parent_w, self.sentinel)) with open(w, 'wb', closefd=True) as f: f.write(buf.getbuffer()) self.pid = forkserver.read_signed(self.sentinel) |