Some simple signal+resource support for the tester selfhost

from_cpython/Include/pyconfig.h

@@ -46,6 +46,7 @@
 #define HAVE_EPOLL 1
 #define HAVE_POLL 1
 #define HAVE_SELECT 1
+#define HAVE_ALARM 1
 
 #define PY_FORMAT_LONG_LONG "ll"
 #define PY_FORMAT_SIZE_T "z"

src/runtime/capi.cpp

@@ -543,6 +543,9 @@ extern "C" Py_ssize_t PySequence_Index(PyObject* o, PyObject* value) noexcept {
 }
 
 extern "C" PyObject* PySequence_Tuple(PyObject* o) noexcept {
+    if (o->cls == tuple_cls)
+        return o;
+
     Py_FatalError("unimplemented");
 }
 

test/tests/resource_test.py

@@ -4,3 +4,9 @@ for k in sorted(dir(resource)):
     if not k.startswith("RLIMIT_"):
         continue
     print k, getattr(resource, k)
+
+TIME_LIMIT = 100
+resource.setrlimit(resource.RLIMIT_CPU, (TIME_LIMIT + 1, TIME_LIMIT + 1))
+
+MAX_MEM_MB = 100
+resource.setrlimit(resource.RLIMIT_RSS, (MAX_MEM_MB * 1024 * 1024, MAX_MEM_MB * 1024 * 1024))

test/tests/signal_test.py

@@ -4,3 +4,5 @@ for k in sorted(dir(signal)):
     if not k.startswith("SIG"):
         continue
     print k, getattr(signal, k)
+
+print hasattr(signal, "alarm")