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
|
// $Id$
#ifndef ACE_RMCAST_REASSEMBLY_C
#define ACE_RMCAST_REASSEMBLY_C
#include "RMCast_Reassembly.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "RMCast_Partial_Message.h"
#if !defined (__ACE_INLINE__)
#include "RMCast_Reassembly.i"
#endif /* __ACE_INLINE__ */
ACE_RCSID(ace, RMCast_Reassembly, "$Id$")
template <ACE_SYNCH_DECL>
ACE_RMCast_Reassembly<ACE_SYNCH_USE>::
ACE_RMCast_Reassembly (ACE_Thread_Manager *thr_mgr,
ACE_Message_Queue<ACE_SYNCH_USE> *mq)
: ACE_Task<ACE_SYNCH_USE> (thr_mgr, mq)
{
}
template <ACE_SYNCH_DECL>
ACE_RMCast_Reassembly<ACE_SYNCH_USE>::
~ACE_RMCast_Reassembly (void)
{
for (Message_Map_Iterator i = this->messages_.begin ();
i != this->messages_.end ();
++i)
{
ACE_RMCast_Partial_Message *message = (*i).int_id_;
if (message != 0)
delete message;
}
this->messages_.unbind_all ();
}
template <ACE_SYNCH_DECL> int
ACE_RMCast_Reassembly<ACE_SYNCH_USE>::put (ACE_Message_Block *mb,
ACE_Time_Value *tv)
{
ACE_UINT32 header[3];
size_t fragment_header_size = sizeof(header);
if (mb->length () < fragment_header_size)
ACE_ERROR_RETURN ((LM_ERROR,
"Message block too small, "
"not enough room for the header\n"),
-1);
ACE_OS::memcpy (header, mb->rd_ptr (), fragment_header_size);
ACE_UINT32 message_sequence_number = ACE_NTOHL(header[0]);
ACE_UINT32 offset = ACE_NTOHL(header[1]);
ACE_UINT32 message_size = ACE_NTOHL(header[2]);
if (mb->length () + offset > message_size)
return -1; // Corrupt message?
ACE_RMCast_Partial_Message *message;
{
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX_T, ace_mon, this->mutex_, -1);
if (this->messages_.find (message_sequence_number, message) == -1)
{
ACE_NEW_RETURN (message,
ACE_RMCast_Partial_Message (message_size),
-1);
if (this->messages_.bind (message_sequence_number,
message) == -1)
return -1; // Internal error?
}
// The message was in the collection, but it has been received
// already, this is a duplicate fragment, just drop it.
if (message == 0)
return 0;
if (message->fragment_received (message_size,
offset,
mb) == -1)
return -1;
if (!message->is_complete ())
return 0;
// Remove the message from the collection, but leave a marker
// to indicate that it was already received...
if (this->messages_.rebind (message_sequence_number, 0) == -1)
return -1;
}
// Push the message...
int r = this->put_next (message->message_body (), tv);
delete message;
return r;
}
#endif /* ACE_RMCAST_REASSEMBLY_C */
|
