L4Re - L4 Runtime Environment
ipc_helper
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1 // vi:set ft=cpp: -*- Mode: C++ -*-
2 /**
3  * \file
4  * \brief IPC helper
5  */
6 /*
7  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
8  * Alexander Warg <warg@os.inf.tu-dresden.de>
9  * economic rights: Technische Universit├Ąt Dresden (Germany)
10  *
11  * This file is part of TUD:OS and distributed under the terms of the
12  * GNU General Public License 2.
13  * Please see the COPYING-GPL-2 file for details.
14  *
15  * As a special exception, you may use this file as part of a free software
16  * library without restriction. Specifically, if other files instantiate
17  * templates or use macros or inline functions from this file, or you compile
18  * this file and link it with other files to produce an executable, this
19  * file does not by itself cause the resulting executable to be covered by
20  * the GNU General Public License. This exception does not however
21  * invalidate any other reasons why the executable file might be covered by
22  * the GNU General Public License.
23  */
24 
25 #pragma once
26 
27 #include <l4/cxx/exceptions>
28 #include <l4/sys/utcb.h>
29 
30 namespace L4
31 {
32 
33 
34 #ifdef __EXCEPTIONS
35  /**
36  * \brief Throw an L4 IPC error as exception.
37  *
38  * \ingroup helper
39  * \param o The client side object, for which the IPC was invoked.
40  * \param err The IPC result code (error code).
41  * \utcb{utcb}
42  */
43  inline void
44  throw_ipc_exception(L4::Cap<void> const &o, l4_msgtag_t const &err,
45  l4_utcb_t *utcb)
46  {
47  (void)o;
48  if (err.has_error())
49  throw (L4::Com_error(l4_error_u(err, utcb)));
50  }
51 
52  /**
53  * \brief Throw an L4 IPC error as exception.
54  *
55  * \ingroup helper
56  * \param o The client side object, for which the IPC was invoked.
57  * \param err The IPC result code (error code).
58  * \utcb{utcb}
59  */
60  inline void
61  throw_ipc_exception(void const *o, l4_msgtag_t const &err,
62  l4_utcb_t *utcb)
63  { throw_ipc_exception(L4::Cap<void>(o), err, utcb); }
64 #endif
65 
66 };