signal: Add basic signal implementation (only IGN & DFL are supported).

signal/signal.py

@@ -0,0 +1,18 @@
+import _libc
+
+
+SIG_DFL = 0
+SIG_IGN = 1
+
+SIGINT = 2
+SIGPIPE = 13
+SIGTERM = 15
+
+libc = _libc.get()
+
+signal_ = libc.func("i", "signal", "ii")
+
+def signal(n, handler):
+    if isinstance(handler, int):
+        return signal_(n, handler)
+    raise NotImplementedError