[3.14] gh-143121: Skip test that leak threads under TSan (gh-143125)

(cherry picked from commit 4ee6929)

Co-authored-by: Sam Gross <colesbury@gmail.com>

Author: colesbury

Lib/test/_test_multiprocessing.py

@@ -3312,6 +3312,7 @@ class _TestMyManager(BaseTestCase):
 
     ALLOWED_TYPES = ('manager',)
 
+    @support.skip_if_sanitizer('TSan: leaks threads', thread=True)
     def test_mymanager(self):
         manager = MyManager(shutdown_timeout=SHUTDOWN_TIMEOUT)
         manager.start()
@@ -3323,6 +3324,7 @@ def test_mymanager(self):
         # which happens on slow buildbots.
         self.assertIn(manager._process.exitcode, (0, -signal.SIGTERM))
 
+    @support.skip_if_sanitizer('TSan: leaks threads', thread=True)
     def test_mymanager_context(self):
         manager = MyManager(shutdown_timeout=SHUTDOWN_TIMEOUT)
         with manager:
@@ -3332,6 +3334,7 @@ def test_mymanager_context(self):
         # which happens on slow buildbots.
         self.assertIn(manager._process.exitcode, (0, -signal.SIGTERM))
 
+    @support.skip_if_sanitizer('TSan: leaks threads', thread=True)
     def test_mymanager_context_prestarted(self):
         manager = MyManager(shutdown_timeout=SHUTDOWN_TIMEOUT)
         manager.start()
@@ -3402,6 +3405,7 @@ def _putter(cls, address, authkey):
         # Note that xmlrpclib will deserialize object as a list not a tuple
         queue.put(tuple(cls.values))
 
+    @support.skip_if_sanitizer('TSan: leaks threads', thread=True)
     def test_remote(self):
         authkey = os.urandom(32)
 
@@ -3443,6 +3447,7 @@ def _putter(cls, address, authkey):
         queue = manager.get_queue()
         queue.put('hello world')
 
+    @support.skip_if_sanitizer("TSan: leaks threads", thread=True)
     def test_rapid_restart(self):
         authkey = os.urandom(32)
         manager = QueueManager(