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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_EXTENSIONS_SOURCE_PLUGIN_INC_PLUGIN_UNX_MEDIATOR_HXX
#define INCLUDED_EXTENSIONS_SOURCE_PLUGIN_INC_PLUGIN_UNX_MEDIATOR_HXX
#include <string.h>
#include <tools/link.hxx>
#include <tools/solar.h>
#include <osl/pipe.hxx>
#include <osl/mutex.hxx>
#include <osl/conditn.hxx>
#include <osl/thread.hxx>
#include <vector>
struct MediatorMessage
{
sal_uLong m_nID;
sal_uLong m_nBytes;
char* m_pBytes;
char* m_pRun;
MediatorMessage() : m_nID( 0 ), m_nBytes( 0 ),
m_pBytes( NULL ), m_pRun( NULL ) {}
MediatorMessage( sal_uLong nID, sal_uLong nBytes, char* pBytes ) :
m_nID( nID ),m_nBytes( nBytes ), m_pRun( NULL )
{
m_pBytes = new char[ m_nBytes ];
memcpy( m_pBytes, pBytes, (size_t)m_nBytes );
}
~MediatorMessage()
{
if( m_pBytes )
delete [] m_pBytes;
}
void Set( sal_uLong nBytes, char* pBytes )
{
if( m_pBytes )
delete [] m_pBytes;
m_nBytes = nBytes;
m_pBytes = new char[ m_nBytes ];
memcpy( m_pBytes, pBytes, (size_t)m_nBytes );
}
sal_uLong ExtractULONG();
char* GetString();
sal_uInt32 GetUINT32();
void* GetBytes( sal_uLong& );
void* GetBytes() { sal_uLong nBytes; return GetBytes( nBytes ); }
void Rewind() { m_pRun = NULL; }
};
class MediatorListener;
class Mediator
{
friend class MediatorListener;
protected:
int m_nSocket;
std::vector<MediatorMessage*> m_aMessageQueue;
osl::Mutex m_aQueueMutex;
osl::Mutex m_aSendMutex;
// only one thread can send a message at any given time
osl::Condition m_aNewMessageCdtn;
MediatorListener* m_pListener;
// thread to fill the queue
sal_uLong m_nCurrentID;
// will be constantly increased with each message sent
bool m_bValid;
Link<> m_aConnectionLostHdl;
Link<> m_aNewMessageHdl;
public:
Mediator( int nSocket );
virtual ~Mediator();
// mark mediator as invalid. No more messages will be processed,
// SendMessage, WaitForMessage, TransactMessage will return immediately
// with error
void invalidate() { m_bValid = false; }
sal_uLong SendMessage( sal_uLong nBytes, const char* pBytes, sal_uLong nMessageID = 0 );
sal_uLong SendMessage( const OString& rMessage, sal_uLong nMessageID = 0 )
{
return SendMessage( rMessage.getLength(), rMessage.getStr(), nMessageID );
}
bool WaitForMessage( sal_uLong nTimeOut = 5000 );
// timeout in ms
// TRUE: Message came in
// FALSE: timed out
// if timeout is set, WaitForMessage will wait even if there are messages
// in the queue
virtual MediatorMessage* WaitForAnswer( sal_uLong nMessageID );
// wait for an answer message ( ID >= 1 << 24 )
// the message will be removed from the queue and returned
MediatorMessage* TransactMessage( sal_uLong nBytes, char* pBytes );
// sends a message and waits for an answer
MediatorMessage* GetNextMessage( bool bWait = false );
Link<> SetConnectionLostHdl( const Link<>& rLink )
{
Link<> aRet = m_aConnectionLostHdl;
m_aConnectionLostHdl = rLink;
return aRet;
}
Link<> SetNewMessageHdl( const Link<>& rLink )
{
Link<> aRet = m_aNewMessageHdl;
m_aNewMessageHdl = rLink;
return aRet;
}
};
class MediatorListener : public osl::Thread
{
friend class Mediator;
private:
Mediator* m_pMediator;
::osl::Mutex m_aMutex;
MediatorListener( Mediator* );
virtual ~MediatorListener();
virtual void run() SAL_OVERRIDE;
virtual void onTerminated() SAL_OVERRIDE;
};
#endif // INCLUDED_EXTENSIONS_SOURCE_PLUGIN_INC_PLUGIN_UNX_MEDIATOR_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
