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-/* -*- c++ -*- */
-/*
- * Copyright 2006,2010 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * GNU Radio is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3, or (at your option)
- * any later version.
- *
- * GNU Radio is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Radio; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- */
-
-
-/*
- * N.B., this is a _very_ non-standard SWIG .i file
- *
- * It contains a bunch of magic that is required to ensure that when
- * these classes are used as base classes for python code,
- * everything works when calling back from C++ into Python.
- *
- * The gist of the problem is that our C++ code is usually not holding
- * the Python Global Interpreter Lock (GIL). Thus if we invoke a
- * "director" method from C++, we'll end up in Python not holding the
- * GIL. Disaster (SIGSEGV) will result. To avoid this we insert a
- * "shim" that grabs and releases the GIL.
- *
- * If you don't understand SWIG "directors" or the Python GIL,
- * don't bother trying to understand what's going on in here.
- *
- * [We could eliminate a bunch of this hair by requiring SWIG 1.3.29
- * or later and some additional magic declarations, but many systems
- * aren't shipping that version yet. Thus we kludge...]
- */
-
-
-// Directors are only supported in Python, Java and C#
-#ifdef SWIGPYTHON
-%include "pmt_swig.i"
-using namespace pmt;
-
-// Enable SWIG directors for these classes
-%feature("director") gr_py_feval_dd;
-%feature("director") gr_py_feval_cc;
-%feature("director") gr_py_feval_ll;
-%feature("director") gr_py_feval;
-%feature("director") gr_py_feval_p;
-
-%feature("nodirector") gr_py_feval_dd::calleval;
-%feature("nodirector") gr_py_feval_cc::calleval;
-%feature("nodirector") gr_py_feval_ll::calleval;
-%feature("nodirector") gr_py_feval::calleval;
-%feature("nodirector") gr_py_feval_p::calleval;
-
-
-%rename(feval_dd) gr_py_feval_dd;
-%rename(feval_cc) gr_py_feval_cc;
-%rename(feval_ll) gr_py_feval_ll;
-%rename(feval) gr_py_feval;
-%rename(feval_p) gr_py_feval_p;
-
-//%exception {
-// try { $action }
-// catch (Swig::DirectorException &e) { std::cerr << e.getMessage(); SWIG_fail; }
-//}
-
-%{
-
-// class that ensures we acquire and release the Python GIL
-
-class ensure_py_gil_state {
- PyGILState_STATE d_gstate;
-public:
- ensure_py_gil_state() { d_gstate = PyGILState_Ensure(); }
- ~ensure_py_gil_state() { PyGILState_Release(d_gstate); }
-};
-
-%}
-
-/*
- * These are the real C++ base classes, however we don't want these exposed.
- */
-%ignore gr_feval_dd;
-class gr_feval_dd
-{
-protected:
- virtual double eval(double x);
-
-public:
- gr_feval_dd() {}
- virtual ~gr_feval_dd();
-
- virtual double calleval(double x);
-};
-
-%ignore gr_feval_cc;
-class gr_feval_cc
-{
-protected:
- virtual gr_complex eval(gr_complex x);
-
-public:
- gr_feval_cc() {}
- virtual ~gr_feval_cc();
-
- virtual gr_complex calleval(gr_complex x);
-};
-
-%ignore gr_feval_ll;
-class gr_feval_ll
-{
-protected:
- virtual long eval(long x);
-
-public:
- gr_feval_ll() {}
- virtual ~gr_feval_ll();
-
- virtual long calleval(long x);
-};
-
-%ignore gr_feval;
-class gr_feval
-{
-protected:
- virtual void eval();
-
-public:
- gr_feval() {}
- virtual ~gr_feval();
-
- virtual void calleval();
-};
-
-%ignore gr_feval_p;
-class gr_feval_p
-{
-protected:
- virtual void eval(pmt_t x);
-
-public:
- gr_feval_p() {}
- virtual ~gr_feval_p();
-
- virtual void calleval(pmt_t x);
-};
-
-/*
- * These are the ones to derive from in Python. They have the magic shim
- * that ensures that we're holding the Python GIL when we enter Python land...
- */
-
-%inline %{
-#include <pmt/pmt.h>
-
-class gr_py_feval_dd : public gr_feval_dd
-{
- public:
- double calleval(double x)
- {
- ensure_py_gil_state _lock;
- return eval(x);
- }
-};
-
-class gr_py_feval_cc : public gr_feval_cc
-{
- public:
- gr_complex calleval(gr_complex x)
- {
- ensure_py_gil_state _lock;
- return eval(x);
- }
-};
-
-class gr_py_feval_ll : public gr_feval_ll
-{
- public:
- long calleval(long x)
- {
- ensure_py_gil_state _lock;
- return eval(x);
- }
-};
-
-class gr_py_feval : public gr_feval
-{
- public:
- void calleval()
- {
- ensure_py_gil_state _lock;
- eval();
- }
-};
-
-class gr_py_feval_p : public gr_feval_p
-{
- public:
- void calleval(pmt::pmt_t x)
- {
- ensure_py_gil_state _lock;
- eval(x);
- }
-};
-
-%}
-
-
-
-// examples / test cases
-
-%rename(feval_dd_example) gr_feval_dd_example;
-double gr_feval_dd_example(gr_feval_dd *f, double x);
-
-%rename(feval_cc_example) gr_feval_cc_example;
-gr_complex gr_feval_cc_example(gr_feval_cc *f, gr_complex x);
-
-%rename(feval_ll_example) gr_feval_ll_example;
-long gr_feval_ll_example(gr_feval_ll *f, long x);
-
-%rename(feval_example) gr_feval_example;
-void gr_feval_example(gr_feval *f);
-
-#endif // SWIGPYTHON