root/trunk/libffado/src/libutil/Functors.h

Revision 960, 4.0 kB (checked in by ppalmers, 16 years ago)

make dbus server handle bus resets and dynamic add/remove of devices

Line 
1 /*
2  * Copyright (C) 2005-2008 by Daniel Wagner
3  *
4  * This file is part of FFADO
5  * FFADO = Free Firewire (pro-)audio drivers for linux
6  *
7  * FFADO is based upon FreeBoB
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, either version 2 of the License, or
12  * (at your option) version 3 of the License.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  */
23
24 #ifndef __FFADO_FUNCTORS__
25 #define __FFADO_FUNCTORS__
26
27 #include <semaphore.h>
28
29 namespace Util {
30
31 class Functor
32 {
33 public:
34     Functor() {}
35     virtual ~Functor() {}
36
37     virtual void operator() () = 0;
38 };
39
40 ////////////////////////////////////////////////////////////////////////
41
42 template< typename CalleePtr, typename MemFunPtr >
43 class MemberFunctor0
44     : public Functor
45 {
46 public:
47     MemberFunctor0( const CalleePtr& pCallee,
48             MemFunPtr pMemFun,
49             bool bDelete = true )
50         : m_pCallee( pCallee )
51         , m_pMemFun( pMemFun )
52         , m_pSem( 0 )
53         , m_bDelete( bDelete )
54         {}
55
56     MemberFunctor0( const CalleePtr& pCallee,
57             MemFunPtr pMemFun,
58             sem_t* pSem,
59             bool bDelete = true )
60         : m_pCallee( pCallee )
61         , m_pMemFun( pMemFun )
62         , m_pSem( pSem )
63         , m_bDelete( bDelete )
64         {}
65
66     virtual ~MemberFunctor0()
67         {}
68
69     virtual void operator() ()
70         {
71             ( ( *m_pCallee ).*m_pMemFun )();
72             if ( m_pSem ) {
73                 sem_post( m_pSem);
74             }
75             if (m_bDelete) {
76             delete this;
77         }
78     }
79
80 private:
81     CalleePtr  m_pCallee;
82     MemFunPtr  m_pMemFun;
83     sem_t* m_pSem;
84     bool       m_bDelete;
85 };
86
87 template< typename CalleePtr, typename MemFunPtr, typename Parm0 >
88 class MemberFunctor1
89     : public Functor
90 {
91 public:
92     MemberFunctor1( const CalleePtr& pCallee,
93             MemFunPtr pMemFun,
94             Parm0 parm0,
95             bool bDelete = true)
96         : m_pCallee( pCallee )
97         , m_pMemFun( pMemFun )
98         , m_parm0( parm0 )
99         , m_pSem( 0 )
100         , m_bDelete( bDelete )
101         {}
102
103     MemberFunctor1( const CalleePtr& pCallee,
104             MemFunPtr pMemFun,
105             Parm0 parm0,
106             sem_t* pSem,
107             bool bDelete = true )
108         : m_pCallee( pCallee )
109         , m_pMemFun( pMemFun )
110         , m_parm0( parm0 )
111         , m_pSem( 0 )
112         , m_bDelete( bDelete )
113         {}
114     virtual ~MemberFunctor1()
115     {}
116
117     virtual void operator() ()
118     {
119             ( ( *m_pCallee ).*m_pMemFun )( m_parm0 );
120             if ( m_pSem ) {
121                 sem_post( m_pSem);
122             }
123             if (m_bDelete) {
124                 delete this;
125             }
126     }
127
128 private:
129     CalleePtr  m_pCallee;
130     MemFunPtr  m_pMemFun;
131     Parm0      m_parm0;
132     sem_t* m_pSem;
133     bool       m_bDelete;
134 };
135
136 template< typename FunPtr >
137 class CallbackFunctor0
138     : public Functor
139 {
140 public:
141     CallbackFunctor0( FunPtr pMemFun,
142             bool bDelete = true )
143         : m_pMemFun( pMemFun )
144         , m_pSem( 0 )
145         , m_bDelete( bDelete )
146         {}
147
148     CallbackFunctor0( FunPtr pMemFun,
149             sem_t* pSem,
150             bool bDelete = true )
151         : m_pMemFun( pMemFun )
152         , m_pSem( pSem )
153         , m_bDelete( bDelete )
154         {}
155
156     virtual ~CallbackFunctor0()
157         {}
158
159     virtual void operator() ()
160         {
161             ( *m_pMemFun )();
162             if ( m_pSem ) {
163                 sem_post( m_pSem);
164             }
165             if (m_bDelete) {
166                 delete this;
167             }
168         }
169
170 private:
171     FunPtr      m_pMemFun;
172     sem_t*      m_pSem;
173     bool        m_bDelete;
174 };
175 }; // end of namespace Util
176
177 #endif
178
179
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