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
|
/** Implementation of the DKMessage class wrapping D-Bus messages
Copyright (C) 2010 Free Software Foundation, Inc.
Written by: Niels Grewe <niels.grewe@halbordnung.de>
Created: June 2010
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02111 USA.
*/
#import "DKMessage.h"
#import <Foundation/NSException.h>
#import "DKEndpoint.h"
#include <dbus/dbus.h>
@implementation DKMessage
- (id) initWithDBusMessage: (DBusMessage*)aMsg
forEndpoint: (DKEndpoint*)anEndpoint
preallocateResources: (BOOL)preallocate
{
DBusConnection *connection = NULL;
if (nil == (self = [super init]))
{
return nil;
}
if ((aMsg == NULL) || (anEndpoint == nil))
{
[self release];
return nil;
}
ASSIGN(endpoint,anEndpoint);
msg = aMsg;
/* Reference the message so it won't disappear behind our back. */
dbus_message_ref(msg);
connection = [anEndpoint DBusConnection];
if (connection == NULL)
{
[self release];
return nil;
}
if (preallocate)
{
/* Preallocate the resources needed to send the message. */
res = dbus_connection_preallocate_send(connection);
if (res == NULL)
{
[self release];
return nil;
}
}
return self;
}
- (void) dealloc
{
if (res != NULL)
{
dbus_connection_free_preallocated_send([endpoint DBusConnection], res);
res = NULL;
}
if (msg != NULL)
{
dbus_message_unref(msg);
msg = NULL;
}
[endpoint release];
[super dealloc];
}
- (void) send
{
if (res != NULL)
{
// We have preallocated resources and use those to send the message
dbus_connection_send_preallocated([endpoint DBusConnection],
res,
msg,
&serial);
// The resources have been "consumed" so we set the pointer to NULL in order
// not to double free it on dealloc time.
res = NULL;
}
else
{
// If we were asked not to preallocate the resources, the send might fail,
// so we need to check and raise an exception if necessary.
BOOL couldSend = dbus_connection_send([endpoint DBusConnection],
msg,
&serial);
if (NO == couldSend)
{
[NSException raise: @"DKDBusOutOfMemoryException"
format: @"Out of memory when sending D-Bus message"];
}
}
}
- (DBusMessage*) DBusMessage
{
return msg;
}
- (NSUInteger)serial
{
return serial;
}
@end;
|
