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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 :
21 : #include <stdio.h>
22 :
23 : #include <sal/log.hxx>
24 :
25 : #include <com/sun/star/io/XActiveDataSource.hpp>
26 : #include <com/sun/star/io/XActiveDataSink.hpp>
27 : #include <com/sun/star/io/XActiveDataControl.hpp>
28 : #include <com/sun/star/io/XConnectable.hpp>
29 : #include <com/sun/star/lang/XSingleServiceFactory.hpp>
30 : #include <com/sun/star/lang/XMultiServiceFactory.hpp>
31 : #include <com/sun/star/lang/XServiceInfo.hpp>
32 : #include <com/sun/star/registry/XRegistryKey.hpp>
33 :
34 : #include <uno/dispatcher.h>
35 : #include <uno/mapping.hxx>
36 : #include <cppuhelper/implbase5.hxx>
37 : #include <cppuhelper/factory.hxx>
38 : #include <cppuhelper/interfacecontainer.hxx>
39 : #include <cppuhelper/supportsservice.hxx>
40 : #include <osl/mutex.hxx>
41 : #include <osl/thread.h>
42 :
43 :
44 : using namespace osl;
45 : using namespace std;
46 : using namespace cppu;
47 : using namespace com::sun::star::uno;
48 : using namespace com::sun::star::lang;
49 : using namespace com::sun::star::registry;
50 : using namespace com::sun::star::io;
51 :
52 : #include "services.hxx"
53 :
54 : namespace io_stm {
55 :
56 : class Pump : public WeakImplHelper5<
57 : XActiveDataSource, XActiveDataSink, XActiveDataControl, XConnectable, XServiceInfo >
58 : {
59 : Mutex m_aMutex;
60 : oslThread m_aThread;
61 :
62 : Reference< XConnectable > m_xPred;
63 : Reference< XConnectable > m_xSucc;
64 : Reference< XInputStream > m_xInput;
65 : Reference< XOutputStream > m_xOutput;
66 : OInterfaceContainerHelper m_cnt;
67 : bool m_closeFired;
68 :
69 : void run();
70 : static void static_run( void* pObject );
71 :
72 : void close();
73 : void fireClose();
74 : void fireStarted();
75 : void fireTerminated();
76 : void fireError( const Any &a );
77 :
78 : public:
79 : Pump();
80 : virtual ~Pump();
81 :
82 : // XActiveDataSource
83 : virtual void SAL_CALL setOutputStream( const Reference< ::com::sun::star::io::XOutputStream >& xOutput ) throw(std::exception) SAL_OVERRIDE;
84 : virtual Reference< ::com::sun::star::io::XOutputStream > SAL_CALL getOutputStream() throw(std::exception) SAL_OVERRIDE;
85 :
86 : // XActiveDataSink
87 : virtual void SAL_CALL setInputStream( const Reference< ::com::sun::star::io::XInputStream >& xStream ) throw(std::exception) SAL_OVERRIDE;
88 : virtual Reference< ::com::sun::star::io::XInputStream > SAL_CALL getInputStream() throw(std::exception) SAL_OVERRIDE;
89 :
90 : // XActiveDataControl
91 : virtual void SAL_CALL addListener( const Reference< ::com::sun::star::io::XStreamListener >& xListener ) throw(std::exception) SAL_OVERRIDE;
92 : virtual void SAL_CALL removeListener( const Reference< ::com::sun::star::io::XStreamListener >& xListener ) throw(std::exception) SAL_OVERRIDE;
93 : virtual void SAL_CALL start() throw( RuntimeException, std::exception ) SAL_OVERRIDE;
94 : virtual void SAL_CALL terminate() throw(std::exception) SAL_OVERRIDE;
95 :
96 : // XConnectable
97 : virtual void SAL_CALL setPredecessor( const Reference< ::com::sun::star::io::XConnectable >& xPred ) throw(std::exception) SAL_OVERRIDE;
98 : virtual Reference< ::com::sun::star::io::XConnectable > SAL_CALL getPredecessor() throw(std::exception) SAL_OVERRIDE;
99 : virtual void SAL_CALL setSuccessor( const Reference< ::com::sun::star::io::XConnectable >& xSucc ) throw(std::exception) SAL_OVERRIDE;
100 : virtual Reference< ::com::sun::star::io::XConnectable > SAL_CALL getSuccessor() throw(std::exception) SAL_OVERRIDE;
101 :
102 : public: // XServiceInfo
103 : virtual OUString SAL_CALL getImplementationName() throw(std::exception ) SAL_OVERRIDE;
104 : virtual Sequence< OUString > SAL_CALL getSupportedServiceNames(void) throw(std::exception ) SAL_OVERRIDE;
105 : virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) throw(std::exception ) SAL_OVERRIDE;
106 : };
107 :
108 0 : Pump::Pump() : m_aThread( 0 ),
109 : m_cnt( m_aMutex ),
110 0 : m_closeFired( false )
111 : {
112 0 : }
113 :
114 0 : Pump::~Pump()
115 : {
116 : // exit gracefully
117 0 : if( m_aThread )
118 : {
119 0 : osl_joinWithThread( m_aThread );
120 0 : osl_destroyThread( m_aThread );
121 : }
122 0 : }
123 :
124 0 : void Pump::fireError( const Any & exception )
125 : {
126 0 : OInterfaceIteratorHelper iter( m_cnt );
127 0 : while( iter.hasMoreElements() )
128 : {
129 : try
130 : {
131 0 : static_cast< XStreamListener * > ( iter.next() )->error( exception );
132 : }
133 0 : catch ( const RuntimeException &e )
134 : {
135 : SAL_WARN("io.streams","com.sun.star.comp.stoc.Pump: unexpected exception during calling listeners" << e.Message);
136 : }
137 0 : }
138 0 : }
139 :
140 0 : void Pump::fireClose()
141 : {
142 0 : bool bFire = false;
143 : {
144 0 : MutexGuard guard( m_aMutex );
145 0 : if( ! m_closeFired )
146 : {
147 0 : m_closeFired = true;
148 0 : bFire = true;
149 0 : }
150 : }
151 :
152 0 : if( bFire )
153 : {
154 0 : OInterfaceIteratorHelper iter( m_cnt );
155 0 : while( iter.hasMoreElements() )
156 : {
157 : try
158 : {
159 0 : static_cast< XStreamListener * > ( iter.next() )->closed( );
160 : }
161 0 : catch ( const RuntimeException &e )
162 : {
163 : SAL_WARN("io.streams","com.sun.star.comp.stoc.Pump: unexpected exception during calling listeners" << e.Message);
164 : }
165 0 : }
166 : }
167 0 : }
168 :
169 0 : void Pump::fireStarted()
170 : {
171 0 : OInterfaceIteratorHelper iter( m_cnt );
172 0 : while( iter.hasMoreElements() )
173 : {
174 : try
175 : {
176 0 : static_cast< XStreamListener * > ( iter.next() )->started( );
177 : }
178 0 : catch ( const RuntimeException &e )
179 : {
180 : SAL_WARN("io.streams","com.sun.star.comp.stoc.Pump: unexpected exception during calling listeners" << e.Message);
181 : }
182 0 : }
183 0 : }
184 :
185 0 : void Pump::fireTerminated()
186 : {
187 0 : OInterfaceIteratorHelper iter( m_cnt );
188 0 : while( iter.hasMoreElements() )
189 : {
190 : try
191 : {
192 0 : static_cast< XStreamListener * > ( iter.next() )->terminated();
193 : }
194 0 : catch ( const RuntimeException &e )
195 : {
196 : SAL_WARN("io.streams","com.sun.star.comp.stoc.Pump: unexpected exception during calling listeners" << e.Message);
197 : }
198 0 : }
199 0 : }
200 :
201 :
202 :
203 0 : void Pump::close()
204 : {
205 : // close streams and release references
206 0 : Reference< XInputStream > rInput;
207 0 : Reference< XOutputStream > rOutput;
208 : {
209 0 : MutexGuard guard( m_aMutex );
210 0 : rInput = m_xInput;
211 0 : m_xInput.clear();
212 :
213 0 : rOutput = m_xOutput;
214 0 : m_xOutput.clear();
215 0 : m_xSucc.clear();
216 0 : m_xPred.clear();
217 : }
218 0 : if( rInput.is() )
219 : {
220 : try
221 : {
222 0 : rInput->closeInput();
223 : }
224 0 : catch( Exception & )
225 : {
226 : // go down calm
227 : }
228 : }
229 0 : if( rOutput.is() )
230 : {
231 : try
232 : {
233 0 : rOutput->closeOutput();
234 : }
235 0 : catch( Exception & )
236 : {
237 : // go down calm
238 : }
239 0 : }
240 0 : }
241 :
242 0 : void Pump::static_run( void* pObject )
243 : {
244 0 : osl_setThreadName("io_stm::Pump::run()");
245 0 : ((Pump*)pObject)->run();
246 0 : ((Pump*)pObject)->release();
247 0 : }
248 :
249 0 : void Pump::run()
250 : {
251 : try
252 : {
253 0 : fireStarted();
254 : try
255 : {
256 0 : Reference< XInputStream > rInput;
257 0 : Reference< XOutputStream > rOutput;
258 : {
259 0 : Guard< Mutex > aGuard( m_aMutex );
260 0 : rInput = m_xInput;
261 0 : rOutput = m_xOutput;
262 : }
263 :
264 0 : if( ! rInput.is() )
265 : {
266 0 : throw NotConnectedException( "no input stream set", (OWeakObject*)this );
267 : }
268 0 : Sequence< sal_Int8 > aData;
269 0 : while( rInput->readSomeBytes( aData, 65536 ) )
270 : {
271 0 : if( ! rOutput.is() )
272 : {
273 0 : throw NotConnectedException( "no output stream set", (OWeakObject*)this );
274 : }
275 0 : rOutput->writeBytes( aData );
276 0 : osl_yieldThread();
277 0 : }
278 : }
279 0 : catch ( const IOException & e )
280 : {
281 0 : fireError( makeAny( e ) );
282 : }
283 0 : catch ( const RuntimeException & e )
284 : {
285 0 : fireError( makeAny( e ) );
286 : }
287 0 : catch ( const Exception & e )
288 : {
289 0 : fireError( makeAny( e ) );
290 : }
291 :
292 0 : close();
293 0 : fireClose();
294 : }
295 0 : catch ( const com::sun::star::uno::Exception &e )
296 : {
297 : // we are the last on the stack.
298 : // this is to avoid crashing the program, when e.g. a bridge crashes
299 : SAL_WARN("io.streams","com.sun.star.comp.stoc.Pump: unexpected exception during calling listeners" << e.Message);
300 : }
301 0 : }
302 :
303 :
304 :
305 : /*
306 : * XConnectable
307 : */
308 :
309 0 : void Pump::setPredecessor( const Reference< XConnectable >& xPred ) throw(std::exception)
310 : {
311 0 : Guard< Mutex > aGuard( m_aMutex );
312 0 : m_xPred = xPred;
313 0 : }
314 :
315 :
316 :
317 0 : Reference< XConnectable > Pump::getPredecessor() throw(std::exception)
318 : {
319 0 : Guard< Mutex > aGuard( m_aMutex );
320 0 : return m_xPred;
321 : }
322 :
323 :
324 :
325 0 : void Pump::setSuccessor( const Reference< XConnectable >& xSucc ) throw(std::exception)
326 : {
327 0 : Guard< Mutex > aGuard( m_aMutex );
328 0 : m_xSucc = xSucc;
329 0 : }
330 :
331 :
332 :
333 0 : Reference< XConnectable > Pump::getSuccessor() throw(std::exception)
334 : {
335 0 : Guard< Mutex > aGuard( m_aMutex );
336 0 : return m_xSucc;
337 : }
338 :
339 :
340 :
341 : /*
342 : * XActiveDataControl
343 : */
344 :
345 0 : void Pump::addListener( const Reference< XStreamListener >& xListener ) throw(std::exception)
346 : {
347 0 : m_cnt.addInterface( xListener );
348 0 : }
349 :
350 :
351 :
352 0 : void Pump::removeListener( const Reference< XStreamListener >& xListener ) throw(std::exception)
353 : {
354 0 : m_cnt.removeInterface( xListener );
355 0 : }
356 :
357 :
358 :
359 0 : void Pump::start() throw( RuntimeException, std::exception )
360 : {
361 0 : Guard< Mutex > aGuard( m_aMutex );
362 0 : m_aThread = osl_createSuspendedThread((oslWorkerFunction)Pump::static_run,this);
363 0 : if( m_aThread )
364 : {
365 : // will be released by OPump::static_run
366 0 : acquire();
367 0 : osl_resumeThread( m_aThread );
368 : }
369 : else
370 : {
371 : throw RuntimeException(
372 : "Pump::start Couldn't create worker thread",
373 0 : *this);
374 0 : }
375 0 : }
376 :
377 :
378 :
379 0 : void Pump::terminate() throw(std::exception)
380 : {
381 0 : close();
382 :
383 : // wait for the worker to die
384 0 : if( m_aThread )
385 0 : osl_joinWithThread( m_aThread );
386 :
387 0 : fireTerminated();
388 0 : fireClose();
389 0 : }
390 :
391 :
392 :
393 : /*
394 : * XActiveDataSink
395 : */
396 :
397 0 : void Pump::setInputStream( const Reference< XInputStream >& xStream ) throw(std::exception)
398 : {
399 0 : Guard< Mutex > aGuard( m_aMutex );
400 0 : m_xInput = xStream;
401 0 : Reference< XConnectable > xConnect( xStream, UNO_QUERY );
402 0 : if( xConnect.is() )
403 0 : xConnect->setSuccessor( this );
404 : // data transfer starts in XActiveDataControl::start
405 0 : }
406 :
407 :
408 :
409 0 : Reference< XInputStream > Pump::getInputStream() throw(std::exception)
410 : {
411 0 : Guard< Mutex > aGuard( m_aMutex );
412 0 : return m_xInput;
413 : }
414 :
415 :
416 :
417 : /*
418 : * XActiveDataSource
419 : */
420 :
421 0 : void Pump::setOutputStream( const Reference< XOutputStream >& xOut ) throw(std::exception)
422 : {
423 0 : Guard< Mutex > aGuard( m_aMutex );
424 0 : m_xOutput = xOut;
425 0 : Reference< XConnectable > xConnect( xOut, UNO_QUERY );
426 0 : if( xConnect.is() )
427 0 : xConnect->setPredecessor( this );
428 : // data transfer starts in XActiveDataControl::start
429 0 : }
430 :
431 0 : Reference< XOutputStream > Pump::getOutputStream() throw(std::exception)
432 : {
433 0 : Guard< Mutex > aGuard( m_aMutex );
434 0 : return m_xOutput;
435 : }
436 :
437 : // XServiceInfo
438 0 : OUString Pump::getImplementationName() throw(std::exception )
439 : {
440 0 : return OPumpImpl_getImplementationName();
441 : }
442 :
443 : // XServiceInfo
444 0 : sal_Bool Pump::supportsService(const OUString& ServiceName) throw(std::exception )
445 : {
446 0 : return cppu::supportsService(this, ServiceName);
447 : }
448 :
449 : // XServiceInfo
450 0 : Sequence< OUString > Pump::getSupportedServiceNames(void) throw(std::exception )
451 : {
452 0 : return OPumpImpl_getSupportedServiceNames();
453 : }
454 :
455 :
456 0 : Reference< XInterface > SAL_CALL OPumpImpl_CreateInstance(
457 : SAL_UNUSED_PARAMETER const Reference< XComponentContext > & )
458 : throw (Exception)
459 : {
460 0 : return Reference< XInterface >( *new Pump );
461 : }
462 :
463 208 : OUString OPumpImpl_getImplementationName()
464 : {
465 208 : return OUString("com.sun.star.comp.io.Pump");
466 : }
467 :
468 0 : Sequence<OUString> OPumpImpl_getSupportedServiceNames(void)
469 : {
470 0 : OUString s("com.sun.star.io.Pump");
471 0 : Sequence< OUString > seq( &s , 1 );
472 0 : return seq;
473 : }
474 :
475 : }
476 :
477 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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