#2025: make it possible to disable the signal watcher code

git-svn-id: https://xpra.org/svn/Xpra/trunk@20929 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/client/mixins/window_manager.py

@@ -68,6 +68,7 @@
 SAVE_WINDOW_ICONS = envbool("XPRA_SAVE_WINDOW_ICONS", False)
 SAVE_CURSORS = envbool("XPRA_SAVE_CURSORS", False)
 MODAL_WINDOWS = envbool("XPRA_MODAL_WINDOWS", False)
+SIGNAL_WATCHER = envbool("XPRA_SIGNAL_WATCHER", False)
 
 
 DRAW_TYPES = {bytes : "bytes", str : "bytes", tuple : "arrays", list : "arrays"}
@@ -748,6 +749,8 @@ def should_force_grab(self, metadata):
     ######################################################################
     # listen for process signals using a watcher process:
     def assign_signal_watcher_pid(self, wid, pid):
+        if not SIGNAL_WATCHER:
+            return 0
         if not POSIX or OSX or not pid:
             return 0
         proc = self._pid_to_signalwatcher.get(pid)