fix: the SIGTERM handler is now opt-in. #1310

2 files changed, 9 insertions, 6 deletions

diff --git a/coverage/config.py b/coverage/config.py
index 1571c017..1ad46597 100644
--- a/coverage/config.py
+++ b/coverage/config.py
@@ -190,6 +190,7 @@ class CoverageConfig:
         self.relative_files = False
         self.run_include = None
         self.run_omit = None
+        self.sigterm = False
         self.source = None
         self.source_pkgs = []
         self.timid = False
@@ -364,6 +365,7 @@ class CoverageConfig:
         ('relative_files', 'run:relative_files', 'boolean'),
         ('run_include', 'run:include', 'list'),
         ('run_omit', 'run:omit', 'list'),
+        ('sigterm', 'run:sigterm', 'boolean'),
         ('source', 'run:source', 'list'),
         ('source_pkgs', 'run:source_pkgs', 'list'),
         ('timid', 'run:timid', 'boolean'),
diff --git a/coverage/control.py b/coverage/control.py
index 6387d0dd..a0571c97 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -536,12 +536,13 @@ class Coverage:
 
         # Register our clean-up handlers.
         atexit.register(self._atexit)
-        is_main = (threading.current_thread() == threading.main_thread())
-        if is_main and not env.WINDOWS:
-            # The Python docs seem to imply that SIGTERM works uniformly even
-            # on Windows, but that's not my experience, and this agrees:
-            # https://stackoverflow.com/questions/35772001/x/35792192#35792192
-            self._old_sigterm = signal.signal(signal.SIGTERM, self._on_sigterm)
+        if self.config.sigterm:
+            is_main = (threading.current_thread() == threading.main_thread())
+            if is_main and not env.WINDOWS:
+                # The Python docs seem to imply that SIGTERM works uniformly even
+                # on Windows, but that's not my experience, and this agrees:
+                # https://stackoverflow.com/questions/35772001/x/35792192#35792192
+                self._old_sigterm = signal.signal(signal.SIGTERM, self._on_sigterm)
 
     def _init_data(self, suffix):
         """Create a data file if we don't have one yet."""