Added PyScModule to forward simulation phase callbacks

PyScModule.cpp

@@ -0,0 +1,57 @@
+/*
+ * PyScModule.cpp
+ *
+ *  Created on: 08.06.2019
+ *      Author: eyck
+ */
+
+#include "PyScModule.h"
+#define PY_SSIZE_T_CLEAN
+#include <python3.6/Python.h>
+
+class TPyScriptThreadLocker {
+    PyGILState_STATE m_state;
+public:
+    TPyScriptThreadLocker(): m_state(PyGILState_Ensure()) {}
+    ~TPyScriptThreadLocker() { PyGILState_Release(m_state); }
+};
+
+scc::PyScModule::PyScModule(PyObject*  self, const sc_core::sc_module_name& nm)
+: sc_core::sc_module(nm)
+, self(self)
+{
+    if (! PyEval_ThreadsInitialized())
+        PyEval_InitThreads();
+    Py_INCREF(self);
+}
+
+scc::PyScModule::~PyScModule() {
+    Py_DECREF(self);
+}
+
+void scc::PyScModule::before_end_of_elaboration(){
+    invoke_callback("BeforeEndOfElaboration");
+}
+
+void scc::PyScModule::end_of_elaboration(){
+    invoke_callback("EndOfElaboration");
+}
+void scc::PyScModule::start_of_simulation(){
+    invoke_callback("StartOfSimulation");
+}
+
+void scc::PyScModule::end_of_simulation(){
+    invoke_callback("EndOfSimulation");
+}
+
+void scc::PyScModule::invoke_callback(const char* callback_name) {
+    // acquiring the GIL
+    PyGILState_STATE gstate;
+    gstate = PyGILState_Ensure();
+    if(PyObject_HasAttrString(self, callback_name)){
+        auto* func = PyObject_GetAttrString(self, callback_name);
+        PyObject_CallFunctionObjArgs(func, nullptr);
+    }
+    // Release the thread. No Python API allowed beyond this point.
+    PyGILState_Release(gstate);
+}

PyScModule.h

@@ -0,0 +1,33 @@
+/*
+ * PyScModule.h
+ *
+ *  Created on: 08.06.2019
+ *      Author: eyck
+ */
+
+#ifndef COMPONENTS_PYSCMODULE_H_
+#define COMPONENTS_PYSCMODULE_H_
+#include <systemc>
+#include <unordered_map>
+#include <tuple>
+
+typedef struct _object  PyObject;
+
+namespace scc {
+
+class PyScModule: public sc_core::sc_module {
+public:
+    PyScModule(PyObject*  self, const sc_core::sc_module_name& nm);
+    virtual ~PyScModule();
+protected:
+    void before_end_of_elaboration() override;
+    void end_of_elaboration() override;
+    void start_of_simulation() override;
+    void end_of_simulation() override;
+private:
+    void invoke_callback(const char*);
+    PyObject* self{nullptr};
+};
+
+}
+#endif /* COMPONENTS_PYSCMODULE_H_ */

pysysc/sccppyy.py

@@ -1,6 +1,7 @@
 import json
 import cppyy
 import os.path
+from pathlib import Path
 import sys
 import tempfile
 import conans.client.conan_api as conan
@@ -13,8 +14,6 @@ lang_symbols = {
     14:'201402L',
     17:'201703L'}
 lang_level=11
-'''
-'''
 
 sysIncludeDirs = set()
 
@@ -92,6 +91,7 @@ namespace sc_core { extern void pln(); }
             if systemc_loaded: break;
         if not interactive: cppyy.gbl.sc_core.pln()
         cppyy.gbl.sc_core.sc_in_action=True
+        _load_pythonization_lib()
         return True
     return False
 
@@ -121,6 +121,16 @@ def _load_systemc_cci():
         return True
     return False
 
+def _load_pythonization_lib():
+    import pysysc
+    path = os.path.dirname(os.path.dirname(pysysc.__file__))
+    for file in os.listdir(path):
+        if file.endswith(".so"):
+            cppyy.load_library(os.path.join(path, file))
+            cppyy.include(os.path.join(path, "PyScModule.h"))
+            return
+
+
 def add_library(file, lib):
     buf = io.StringIO()
     with redirect_stdout(buf), redirect_stderr(buf):
@@ -150,8 +160,6 @@ def _pythonizor(clazz, name):
         clazz.__repr__ = lambda self: repr(self.name())
     elif len(name) > 10 and name[:9] == 'sc_export<':
         clazz.__repr__ = lambda self: repr(self.name())
-#     else:
-#         print('not pythonizing', name)
 
 # install the pythonizor as a callback on namespace 'Math' (default is the global namespace)
 cppyy.py.add_pythonization(_pythonizor, 'sc_core')

pysysc/structural.py

@@ -8,7 +8,6 @@ from builtins import getattr
 import re
 from enum import Enum
 import logging
-import pysysc
 
 class Mode(Enum):
     SIM = 1
@@ -21,6 +20,8 @@ class Simulation(object):
     @staticmethod
     def run():
         cpp.sc_core.sc_start()
+        if not cpp.sc_core.sc_end_of_simulation_invoked():
+            cpp.sc_core.sc_stop()
         
     @staticmethod
     def setup(log_level = logging.WARNING):

setup.py

@@ -1,15 +1,26 @@
-from setuptools import setup
-
+from setuptools import setup, Extension
+import os
 
 def readme():
     with open('README.md') as f:
         return f.read()
 
+sysc_home = os.environ['SYSTEMC_HOME']
+
+pysyscsc = Extension('pysyscsc',
+                    define_macros = [('MAJOR_VERSION', '1'), ('MINOR_VERSION', '0')],
+                    extra_compile_args = ['-std=c++11'],
+                    include_dirs = [sysc_home+'/include'],
+                    libraries = ['systemc'],
+                    library_dirs = [sysc_home+'/lib'],
+                    sources = ['PyScModule.cpp'])
+
 
 setup(name='PySysC',
     version='0.1',
     description='Python SystemC binding',
     long_description=readme(),
+    ext_modules = [pysyscsc],
     classifiers=[
         'Development Status :: 3 - Alpha',
         'License :: OSI Approved :: Apache Software License',
@@ -22,11 +33,12 @@ setup(name='PySysC',
     author_email='info@minres.com',
     license='Apache-2.0',
     packages=['pysysc'],
+    data_files=[('.',['PyScModule.h'])],
+    include_package_data=True,
     install_requires=[
         'cppyy',
         'conan'
         ],
-    include_package_data=True,
     test_suite='nose.collector',
     tests_require=['nose'],
 )