SystemRestart exception to restart the interpreter

src/org/python/core/PyTableCode.java

 // Copyright (c) Corporation for National Research Initiatives
 package org.python.core;
 
 /**
  * An implementation of PyCode where the actual executable content
  * is stored as a PyFunctionTable instance and an integer index.
  */
 
 public class PyTableCode extends PyCode
 {
@@ skipping 208 matching lines @@
         }
         // Handle trace function for profiling
         if (ts.profilefunc != null) {
             ts.profilefunc.traceReturn(frame, ret);
         }
 
         // Restore previously defined exception
         ts.exception = previous_exception;
 
         ts.frame = ts.frame.f_back;
+
+        // Check for interruption, which is used for restarting the interpreter
+        // on Jython
+        if (Thread.currentThread().isInterrupted()) {
+            throw Py.SystemRestart();
+        }
         return ret;
     }
 
     public PyObject call(PyObject globals, PyObject[] defaults,
                          PyObject closure)
     {
         if (co_argcount != 0 || varargs || varkwargs)
             return call(Py.EmptyObjects, Py.NoKeywords, globals, defaults,
                         closure);
         PyFrame frame = new PyFrame(this, globals);
@@ skipping 163 matching lines @@
             return new PyGenerator(frame, closure);
         }
         return call(frame, closure);
     }
 
     public String toString() {
         return String.format("<code object %.100s at %s, file \"%.300s\", line %d>",
                              co_name, Py.idstr(this), co_filename, co_firstlineno);
     }
 }