1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
namespace DBus
{
using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Reflection;
using System.IO;
using System.Collections;
public class Connection
{
/// <summary>
/// A pointer to the underlying Connection structure
/// </summary>
private IntPtr rawConnection;
/// <summary>
/// The current slot number
/// </summary>
private static int slot = -1;
private int timeout = -1;
internal Connection(IntPtr rawConnection)
{
RawConnection = rawConnection;
}
public Connection(string address)
{
// the assignment bumps the refcount
Error error = new Error();
error.Init();
RawConnection = dbus_connection_open(address, ref error);
if (RawConnection != IntPtr.Zero) {
dbus_connection_unref(RawConnection);
} else {
throw new DBusException(error);
}
SetupWithMain();
}
public void Flush()
{
dbus_connection_flush(RawConnection);
}
public void SetupWithMain()
{
dbus_connection_setup_with_g_main(RawConnection, IntPtr.Zero);
}
~Connection ()
{
if (RawConnection != IntPtr.Zero)
{
dbus_connection_disconnect(rawConnection);
}
RawConnection = IntPtr.Zero; // free the native object
}
internal static Connection Wrap(IntPtr rawConnection)
{
if (slot > -1) {
// Maybe we already have a Connection object associated with
// this rawConnection then return it
IntPtr rawThis = dbus_connection_get_data (rawConnection, slot);
if (rawThis != IntPtr.Zero) {
return (DBus.Connection) ((GCHandle)rawThis).Target;
}
}
// If it doesn't exist then create a new connection around it
return new Connection(rawConnection);
}
public int Timeout
{
get
{
return this.timeout;
}
set
{
this.timeout = value;
}
}
private int Slot
{
get
{
if (slot == -1)
{
// We need to initialize the slot
if (!dbus_connection_allocate_data_slot (ref slot))
throw new OutOfMemoryException ();
Debug.Assert (slot >= 0);
}
return slot;
}
}
internal IntPtr RawConnection
{
get
{
return rawConnection;
}
set
{
if (value == rawConnection)
return;
if (rawConnection != IntPtr.Zero)
{
// Get the reference to this
IntPtr rawThis = dbus_connection_get_data (rawConnection, Slot);
Debug.Assert (rawThis != IntPtr.Zero);
// Blank over the reference
dbus_connection_set_data (rawConnection, Slot, IntPtr.Zero, IntPtr.Zero);
// Free the reference
((GCHandle) rawThis).Free();
// Unref the connection
dbus_connection_unref(rawConnection);
}
this.rawConnection = value;
if (rawConnection != IntPtr.Zero)
{
GCHandle rawThis;
dbus_connection_ref (rawConnection);
// We store a weak reference to the C# object on the C object
rawThis = GCHandle.Alloc (this, GCHandleType.WeakTrackResurrection);
dbus_connection_set_data(rawConnection, Slot, (IntPtr) rawThis, IntPtr.Zero);
}
}
}
[DllImport("dbus-glib-1")]
private extern static void dbus_connection_setup_with_g_main(IntPtr rawConnection,
IntPtr rawContext);
[DllImport ("dbus-1")]
private extern static IntPtr dbus_connection_open (string address, ref Error error);
[DllImport ("dbus-1")]
private extern static void dbus_connection_unref (IntPtr ptr);
[DllImport ("dbus-1")]
private extern static void dbus_connection_ref (IntPtr ptr);
[DllImport ("dbus-1")]
private extern static bool dbus_connection_allocate_data_slot (ref int slot);
[DllImport ("dbus-1")]
private extern static void dbus_connection_free_data_slot (ref int slot);
[DllImport ("dbus-1")]
private extern static bool dbus_connection_set_data (IntPtr ptr,
int slot,
IntPtr data,
IntPtr free_data_func);
[DllImport ("dbus-1")]
private extern static void dbus_connection_flush (IntPtr ptr);
[DllImport ("dbus-1")]
private extern static IntPtr dbus_connection_get_data (IntPtr ptr,
int slot);
[DllImport ("dbus-1")]
private extern static void dbus_connection_disconnect (IntPtr ptr);
}
}
|
