hal getattr

Author: hdiethelm

lib/python/hal.py

@@ -29,6 +29,51 @@
 
 import _hal
 from _hal import *
+import warnings
+import os
+
+def __getattr__(name):
+    if name == 'is_rt':
+        warnings.simplefilter('always', DeprecationWarning)
+        warnings.warn(f"{name} is deprecated, use get_realtime_type() instead", DeprecationWarning)
+        warnings.simplefilter('default', DeprecationWarning)
+
+        #We the hal to be initialized to use get_realtime_type()
+        #If it is not initialized, create a component which will inizialize it
+        #It will be cleaned up imediately
+        comp_name=f"halpy{os.getpid()}"
+        if not is_initialized():
+            c=component(comp_name);
+
+        t = get_realtime_type()
+        if t == REALTIME_TYPE_UNINITIALIZED:
+            warnings.warn("Unable to check realtime status, not initialized", Warning)
+            return False
+        elif t == REALTIME_TYPE_NONE:
+            return False
+        else:
+            return True
+    if name == 'is_sim':
+        warnings.simplefilter('always', DeprecationWarning)
+        warnings.warn(f"{name} is deprecated, use get_realtime_type() instead", DeprecationWarning)
+        warnings.simplefilter('default', DeprecationWarning)
+
+        #We the hal to be initialized to use get_realtime_type()
+        #If it is not initialized, create a component which will inizialize it
+        #It will be cleaned up imediately
+        comp_name=f"halpy{os.getpid()}"
+        if not is_initialized():
+            c=component(comp_name);
+
+        t = get_realtime_type()
+        if t == REALTIME_TYPE_UNINITIALIZED:
+            warnings.warn("Unable to check realtime status, not initialized", Warning)
+            return True
+        elif t == REALTIME_TYPE_NONE:
+            return True
+        else:
+            return False
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
 
 class _ItemWrap(object):
     def __new__(cls, item):

src/hal/halmodule.cc

@@ -1835,6 +1835,10 @@ static PyObject *pyhal_get_realtime_type(PyObject * /*self*/, PyObject * /*o*/)
     return PyLong_FromLong(res);
 }
 
+static PyObject *pyhal_is_initialized(PyObject * /*self*/, PyObject * /*o*/) {
+    return PyBool_FromLong(hal_shmem_base != NULL);
+}
+
 struct shmobject {
     PyObject_HEAD
     halobject *comp;
@@ -2306,7 +2310,9 @@ static PyMethodDef module_methods[] = {
     {"get_info_params", get_info_params, METH_VARARGS,
 	".get_info_params(): Get a list of dicts for all the parameters; {NAME:, VALUE:}"},
     {"get_realtime_type", pyhal_get_realtime_type, METH_NOARGS,
-        "Call get_realtime_type"},
+        ".get_realtime_type(): Return the type of the running realtime"},
+    {"is_initialized", pyhal_is_initialized, METH_NOARGS,
+        ".is_initialized(): Return if hal is initialized"},
     {},
 };
 
@@ -2395,10 +2401,6 @@ PyMODINIT_FUNC PyInit__hal(void)
     PyModule_AddIntConstant(m, "REALTIME_TYPE_XENOMAI", REALTIME_TYPE_XENOMAI);
     PyModule_AddIntConstant(m, "REALTIME_TYPE_XENOMAI_EVL", REALTIME_TYPE_XENOMAI_EVL);
 
-    //ToDo: Search all references and eliminate them
-    //PyModule_AddIntConstant(m, "is_sim", !rtapi_is_realtime());
-    //PyModule_AddIntConstant(m, "is_rt", rtapi_is_realtime());
-
     PyModule_AddIntConstant(m, "is_kernelspace", rtapi_is_kernelspace());
     PyModule_AddIntConstant(m, "is_userspace", !rtapi_is_kernelspace());