- Add preliminary code for Python policy management
git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@370 3ecf2c5c-341e-0410-92b4-d18e462d057c
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@ -20,9 +20,11 @@
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#include "python_policy_manager.hh"
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#include <string>
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#include <cassert>
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#include <cstdio>
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using namespace sgpem;
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//static object
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PythonPolicyManager* PythonPolicyManager::_instance = NULL;
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@ -63,8 +65,79 @@ PythonPolicyManager::init()
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PyRun_SimpleString("import sys\n"
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"sys.path[:0] = [ '" MODDIR "', '" PYCDIR "' ]\n");
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// Okay, here we go.
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// Black magic at work.
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// FIXME : Hardcoded policy
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char* policy_name = "fcfs_policy";
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PyObject* pLoadmeStr = PyString_FromString(policy_name);
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PyObject *pModule = PyImport_Import(pLoadmeStr);
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Py_DECREF(pLoadmeStr);
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if( !pModule )
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{
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PyErr_Print(); // Error in import
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// FIXME : don't exit abruptly, but fall back gracefully
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exit(-1);
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}
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// Dictionary with defined ``symbols'' for .pyc file
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PyObject* pDict = PyModule_GetDict(pModule);
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assert(pDict);
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// Build up UserPythonScriptAdapter
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{
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std::string py_adapter = std::string("class UserPythonScriptAdapter(") +
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policy_name + "):\n"
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" def __init__(self):\n"
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" pass;\n"
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" def async_configure():\n"
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" pass;\n"
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" def async_sort_queue():\n"
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" pass;\n"
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" def async_is_preemptible():\n"
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" pass;\n"
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" def async_is_timesliced():\n"
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" pass;\n"
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"\n";
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PyRun_SimpleString(py_adapter.c_str());
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}
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//build SWIG proxy object inside the interpreter
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PyRun_SimpleString("py_ad = UserPythonScriptAdapter");
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/* const char *buildPyProcess =
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"import proto_process\n"
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"p = proto_process.Process(19, 'param')\n"
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"#set ownership to C++ code\n"
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"p.thisown = 0\n";
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PyRun_SimpleString(buildPyProcess);
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*/
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Py_DECREF(pModule);
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pModule = PyImport_AddModule("__main__");
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pDict = PyModule_GetDict(pModule);
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// PyObject *pPyProcess = PyMapping_GetItemString(pDict, "p");
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// assert(pPyProcess);
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// Matteo: PyTuple_SetItem steals the reference, so
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// we don't DECREF pPyProcess.
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// See http://www.python.org/doc/2.4.2/api/refcountDetails.html#l2h-13
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// PyTuple_SetItem(pArgs, 0, pPyProcess);
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// assert(pFunc);
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/* if(PyCallable_Check(pFunc))
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{
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PyObject* ret = PyObject_CallObject(pFunc, pArgs);
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Py_DECREF(pArgs);
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if(!ret) PyErr_Print();
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else Py_DECREF(ret);
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}
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*/
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}
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