1 // (C) Copyright 2006 Douglas Gregor <doug.gregor -at- gmail.com>
2
3 // Use, modification and distribution is subject to the Boost Software
4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6
7 // Authors: Douglas Gregor
8
9 /** @file request.cpp
10 *
11 * This file reflects the Boost.MPI @c request class into
12 * Python.
13 */
14 #include <boost/python.hpp>
15 #include <boost/mpi.hpp>
16 #include "request_with_value.hpp"
17
18 using namespace boost::python;
19 using namespace boost::mpi;
20
get_value() const21 const object python::request_with_value::get_value() const
22 {
23 if (m_internal_value.get())
24 return *m_internal_value;
25 else if (m_external_value)
26 return *m_external_value;
27 else
28 {
29 PyErr_SetString(PyExc_ValueError, "request value not available");
30 throw boost::python::error_already_set();
31 }
32 }
33
get_value_or_none() const34 const object python::request_with_value::get_value_or_none() const
35 {
36 if (m_internal_value.get())
37 return *m_internal_value;
38 else if (m_external_value)
39 return *m_external_value;
40 else
41 return object();
42 }
43
wrap_wait()44 const object python::request_with_value::wrap_wait()
45 {
46 status stat = request::wait();
47 if (m_internal_value.get() || m_external_value)
48 return boost::python::make_tuple(get_value(), stat);
49 else
50 return object(stat);
51 }
52
wrap_test()53 const object python::request_with_value::wrap_test()
54 {
55 ::boost::optional<status> stat = request::test();
56 if (stat)
57 {
58 if (m_internal_value.get() || m_external_value)
59 return boost::python::make_tuple(get_value(), *stat);
60 else
61 return object(*stat);
62 }
63 else
64 return object();
65 }
66
67
68 namespace boost { namespace mpi { namespace python {
69
request_test(request & req)70 const object request_test(request &req)
71 {
72 ::boost::optional<status> stat = req.test();
73 if (stat)
74 return object(*stat);
75 else
76 return object();
77 }
78
79 extern const char* request_docstring;
80 extern const char* request_with_value_docstring;
81 extern const char* request_wait_docstring;
82 extern const char* request_test_docstring;
83 extern const char* request_cancel_docstring;
84 extern const char* request_value_docstring;
85
export_request()86 void export_request()
87 {
88 using boost::python::arg;
89 using boost::python::object;
90
91 {
92 typedef request cl;
93 class_<cl>("Request", request_docstring, no_init)
94 .def("wait", &cl::wait, request_wait_docstring)
95 .def("test", &request_test, request_test_docstring)
96 .def("cancel", &cl::cancel, request_cancel_docstring)
97 ;
98 }
99 {
100 typedef request_with_value cl;
101 class_<cl, bases<request> >(
102 "RequestWithValue", request_with_value_docstring, no_init)
103 .def("wait", &cl::wrap_wait, request_wait_docstring)
104 .def("test", &cl::wrap_test, request_test_docstring)
105 ;
106 }
107
108 implicitly_convertible<request, request_with_value>();
109 }
110
111 } } } // end namespace boost::mpi::python
112