fix: check platform compat for windows signals

Author: greysonlalonde

lib/crewai/src/crewai/events/types/system_events.py

@@ -19,9 +19,9 @@ class SignalType(IntEnum):
 
     SIGTERM = signal.SIGTERM
     SIGINT = signal.SIGINT
-    SIGHUP = signal.SIGHUP
-    SIGTSTP = signal.SIGTSTP
-    SIGCONT = signal.SIGCONT
+    SIGHUP = getattr(signal, "SIGHUP", 1)
+    SIGTSTP = getattr(signal, "SIGTSTP", 20)
+    SIGCONT = getattr(signal, "SIGCONT", 18)
 
 
 class SigTermEvent(BaseEvent):

lib/crewai/src/crewai/telemetry/telemetry.py

@@ -174,9 +174,12 @@ def _register_shutdown_handlers(self) -> None:
 
         self._register_signal_handler(signal.SIGTERM, SigTermEvent, shutdown=True)
         self._register_signal_handler(signal.SIGINT, SigIntEvent, shutdown=True)
-        self._register_signal_handler(signal.SIGHUP, SigHupEvent, shutdown=False)
-        self._register_signal_handler(signal.SIGTSTP, SigTStpEvent, shutdown=False)
-        self._register_signal_handler(signal.SIGCONT, SigContEvent, shutdown=False)
+        if hasattr(signal, "SIGHUP"):
+            self._register_signal_handler(signal.SIGHUP, SigHupEvent, shutdown=False)
+        if hasattr(signal, "SIGTSTP"):
+            self._register_signal_handler(signal.SIGTSTP, SigTStpEvent, shutdown=False)
+        if hasattr(signal, "SIGCONT"):
+            self._register_signal_handler(signal.SIGCONT, SigContEvent, shutdown=False)
 
     def _register_signal_handler(
         self,

lib/crewai/tests/events/types/test_system_events.py

@@ -27,9 +27,9 @@ def test_signal_type_values(self) -> None:
         """Verify SignalType maps to correct signal numbers."""
         assert SignalType.SIGTERM == signal.SIGTERM
         assert SignalType.SIGINT == signal.SIGINT
-        assert SignalType.SIGHUP == signal.SIGHUP
-        assert SignalType.SIGTSTP == signal.SIGTSTP
-        assert SignalType.SIGCONT == signal.SIGCONT
+        assert SignalType.SIGHUP == getattr(signal, "SIGHUP", 1)
+        assert SignalType.SIGTSTP == getattr(signal, "SIGTSTP", 20)
+        assert SignalType.SIGCONT == getattr(signal, "SIGCONT", 18)
 
 
 class TestSignalEvents: