bpo-30794: added kill() method to multiprocessing.Process (#2528)

* bpo-30794: added kill() method to multiprocessing.Process

* Added entries to documentation and NEWS

* Refactored test_terminate and test_kill

* Fix SIGTERM and SIGKILL being used on Windows for the tests

* Added "versionadded" marker to the documentation

* Fix trailing whitespace in doc

1 files changed, 8 insertions, 2 deletions

diff --git a/Lib/multiprocessing/popen_fork.py b/Lib/multiprocessing/popen_fork.py
index 5af9d919e4..44ce9a9e79 100644
--- a/Lib/multiprocessing/popen_fork.py
+++ b/Lib/multiprocessing/popen_fork.py
@@ -49,16 +49,22 @@ class Popen(object):
             return self.poll(os.WNOHANG if timeout == 0.0 else 0)
         return self.returncode
 
-    def terminate(self):
+    def _send_signal(self, sig):
         if self.returncode is None:
             try:
-                os.kill(self.pid, signal.SIGTERM)
+                os.kill(self.pid, sig)
             except ProcessLookupError:
                 pass
             except OSError:
                 if self.wait(timeout=0.1) is None:
                     raise
 
+    def terminate(self):
+        self._send_signal(signal.SIGTERM)
+
+    def kill(self):
+        self._send_signal(signal.SIGKILL)
+
     def _launch(self, process_obj):
         code = 1
         parent_r, child_w = os.pipe()