timeout init

vr180_streaming/timeout_init.py

@@ -0,0 +1,45 @@
+"""
+Timeout wrapper for SAM2 initialization to prevent hanging
+"""
+
+import signal
+import functools
+from typing import Any, Callable
+
+
+class TimeoutError(Exception):
+    pass
+
+
+def timeout(seconds: int = 120):
+    """Decorator to add timeout to function calls"""
+    def decorator(func: Callable) -> Callable:
+        @functools.wraps(func)
+        def wrapper(*args, **kwargs) -> Any:
+            # Define signal handler
+            def timeout_handler(signum, frame):
+                raise TimeoutError(f"Function {func.__name__} timed out after {seconds} seconds")
+            
+            # Set signal handler
+            old_handler = signal.signal(signal.SIGALRM, timeout_handler)
+            signal.alarm(seconds)
+            
+            try:
+                result = func(*args, **kwargs)
+            finally:
+                # Restore old handler
+                signal.alarm(0)
+                signal.signal(signal.SIGALRM, old_handler)
+                
+            return result
+        return wrapper
+    return decorator
+
+
+@timeout(120)  # 2 minute timeout
+def safe_init_state(predictor, video_path: str, **kwargs) -> Any:
+    """Safely initialize SAM2 state with timeout"""
+    return predictor.init_state(
+        video_path=video_path,
+        **kwargs
+    )