Marcel Offermans | 613a620 | 2009-03-11 22:31:44 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.apache.felix.das; |
| 20 | |
| 21 | |
| 22 | import java.util.ArrayList; |
| 23 | import java.util.Collections; |
| 24 | import java.util.Dictionary; |
| 25 | import java.util.HashMap; |
| 26 | import java.util.List; |
| 27 | import java.util.Map; |
| 28 | import java.util.Properties; |
| 29 | import java.util.concurrent.Callable; |
| 30 | import java.util.concurrent.CountDownLatch; |
| 31 | import java.util.concurrent.ExecutorService; |
| 32 | import java.util.concurrent.Executors; |
| 33 | import java.util.concurrent.ScheduledExecutorService; |
| 34 | import java.util.concurrent.TimeUnit; |
| 35 | |
| 36 | import org.apache.felix.das.util.DriverLoader; |
| 37 | import org.apache.felix.das.util.DriverMatcher; |
| 38 | import org.apache.felix.das.util.Util; |
| 39 | import org.osgi.framework.Bundle; |
| 40 | import org.osgi.framework.BundleContext; |
| 41 | import org.osgi.framework.Filter; |
| 42 | import org.osgi.framework.FrameworkEvent; |
| 43 | import org.osgi.framework.FrameworkListener; |
| 44 | import org.osgi.framework.InvalidSyntaxException; |
| 45 | import org.osgi.framework.ServiceReference; |
| 46 | import org.osgi.service.device.Constants; |
| 47 | import org.osgi.service.device.Device; |
| 48 | import org.osgi.service.device.Driver; |
| 49 | import org.osgi.service.device.DriverLocator; |
| 50 | import org.osgi.service.device.DriverSelector; |
| 51 | import org.osgi.service.device.Match; |
| 52 | import org.osgi.service.log.LogService; |
| 53 | |
| 54 | |
| 55 | /** |
| 56 | * TODO: add javadoc |
| 57 | * |
| 58 | * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| 59 | */ |
| 60 | public class DeviceManager implements Log |
| 61 | { |
| 62 | |
| 63 | private final long DEFAULT_TIMEOUT_SEC = 1; |
| 64 | |
| 65 | // the logger |
| 66 | private LogService m_log; |
| 67 | |
| 68 | // the bundle context |
| 69 | private final BundleContext m_context; |
| 70 | |
| 71 | // the driver selector |
| 72 | private DriverSelector m_selector; |
| 73 | |
| 74 | // the driver locators |
| 75 | private List<DriverLocator> m_locators; |
| 76 | |
| 77 | // the devices |
| 78 | private Map<ServiceReference, Object> m_devices; |
| 79 | |
| 80 | // the drivers |
| 81 | private Map<ServiceReference, DriverAttributes> m_drivers; |
| 82 | |
| 83 | // performs all the background actions |
| 84 | private ExecutorService m_worker; |
| 85 | |
| 86 | // used to add delayed actions |
| 87 | private ScheduledExecutorService m_delayed; |
| 88 | |
| 89 | private Filter m_deviceImplFilter; |
| 90 | |
| 91 | private Filter m_driverImplFilter; |
| 92 | |
| 93 | |
| 94 | public DeviceManager( BundleContext context ) |
| 95 | { |
| 96 | m_context = context; |
| 97 | } |
| 98 | |
| 99 | |
| 100 | public void debug( String message ) |
| 101 | { |
| 102 | m_log.log( LogService.LOG_DEBUG, message ); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | public void info( String message ) |
| 107 | { |
| 108 | m_log.log( LogService.LOG_INFO, message ); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | public void warning( String message ) |
| 113 | { |
| 114 | m_log.log( LogService.LOG_WARNING, message ); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | public void error( String message, Throwable e ) |
| 119 | { |
| 120 | System.err.println( message ); |
| 121 | if ( e != null ) |
| 122 | { |
| 123 | e.printStackTrace(); |
| 124 | } |
| 125 | m_log.log( LogService.LOG_ERROR, message, e ); |
| 126 | } |
| 127 | |
| 128 | |
| 129 | // dependency manager methods |
| 130 | @SuppressWarnings("unused") |
| 131 | private void init() throws InvalidSyntaxException |
| 132 | { |
| 133 | m_locators = Collections.synchronizedList( new ArrayList<DriverLocator>() ); |
| 134 | m_worker = Executors.newSingleThreadExecutor( new NamedThreadFactory( "Apache Felix Device Manager" ) ); |
| 135 | m_delayed = Executors.newScheduledThreadPool( 1, new NamedThreadFactory( |
| 136 | "Apache Felix Device Manager - delayed" ) ); |
| 137 | m_deviceImplFilter = Util.createFilter( "(%s=%s)", new Object[] |
| 138 | { org.osgi.framework.Constants.OBJECTCLASS, Device.class.getName() } ); |
| 139 | m_driverImplFilter = Util.createFilter( "(%s=%s)", new Object[] |
| 140 | { org.osgi.framework.Constants.OBJECTCLASS, Driver.class.getName() } ); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | @SuppressWarnings("unused") |
| 145 | private void start() |
| 146 | { |
| 147 | m_drivers = new HashMap<ServiceReference, DriverAttributes>(); |
| 148 | m_devices = new HashMap<ServiceReference, Object>(); |
| 149 | submit( new WaitForStartFramework() ); |
| 150 | } |
| 151 | |
| 152 | |
| 153 | public void stop() |
| 154 | { |
| 155 | // nothing to do ? |
| 156 | } |
| 157 | |
| 158 | |
| 159 | public void destroy() |
| 160 | { |
| 161 | m_worker.shutdownNow(); |
| 162 | m_delayed.shutdownNow(); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | // callback methods |
| 167 | |
| 168 | public void locatorAdded( DriverLocator locator ) |
| 169 | { |
| 170 | m_locators.add( locator ); |
| 171 | debug( "driver locator appeared" ); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | public void locatorRemoved( DriverLocator locator ) |
| 176 | { |
| 177 | m_locators.remove( locator ); |
| 178 | debug( "driver locator lost" ); |
| 179 | } |
| 180 | |
| 181 | |
| 182 | public void driverAdded( ServiceReference ref, Object obj ) |
| 183 | { |
| 184 | final Driver driver = Driver.class.cast( obj ); |
| 185 | m_drivers.put( ref, new DriverAttributes( ref, driver ) ); |
| 186 | |
| 187 | debug( "driver appeared: " + Util.showDriver( ref ) ); |
| 188 | } |
| 189 | |
| 190 | |
| 191 | public void driverRemoved( ServiceReference ref ) |
| 192 | { |
| 193 | String driverId = String.class.cast( ref.getProperty( Constants.DRIVER_ID ) ); |
| 194 | debug( "driver lost: " + Util.showDriver( ref ) ); |
| 195 | m_drivers.remove( driverId ); |
| 196 | |
| 197 | // check if devices have become idle |
| 198 | // after some time |
| 199 | schedule( new CheckForIdleDevices() ); |
| 200 | |
| 201 | } |
| 202 | |
| 203 | |
| 204 | public void deviceAdded( ServiceReference ref, Object device ) |
| 205 | { |
| 206 | m_devices.put( ref, device ); |
| 207 | debug( "device appeared: " + Util.showDevice( ref ) ); |
| 208 | submit( new DriverAttachAlgorithm( ref, device ) ); |
| 209 | } |
| 210 | |
| 211 | |
| 212 | public void deviceModified( ServiceReference ref, Object device ) |
| 213 | { |
| 214 | debug( "device modified: " + Util.showDevice( ref ) ); |
| 215 | // nothing further to do ? |
| 216 | // DeviceAttributes da = m_devices.get(ref); |
| 217 | // submit(new DriverAttachAlgorithm(da)); |
| 218 | } |
| 219 | |
| 220 | |
| 221 | public void deviceRemoved( ServiceReference ref ) |
| 222 | { |
| 223 | debug( "device removed: " + Util.showDevice( ref ) ); |
| 224 | m_devices.remove( ref ); |
| 225 | // nothing further to do ? |
| 226 | // the services that use this |
| 227 | // device should track it. |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /** |
| 232 | * perform this task as soon as possible. |
| 233 | * |
| 234 | * @param task |
| 235 | * the task |
| 236 | */ |
| 237 | private void submit( Callable<Object> task ) |
| 238 | { |
| 239 | m_worker.submit( new LoggedCall( task ) ); |
| 240 | } |
| 241 | |
| 242 | |
| 243 | /** |
| 244 | * perform this task after the default delay. |
| 245 | * |
| 246 | * @param task |
| 247 | * the task |
| 248 | */ |
| 249 | private void schedule( Callable<Object> task ) |
| 250 | { |
| 251 | m_delayed.schedule( new DelayedCall( task ), DEFAULT_TIMEOUT_SEC, TimeUnit.SECONDS ); |
| 252 | } |
| 253 | |
| 254 | // worker callables |
| 255 | |
| 256 | /** |
| 257 | * Callable used to start the DeviceManager. It either waits (blocking the |
| 258 | * worker thread) for the framework to start, or if it has already started, |
| 259 | * returns immediately, freeing up the worker thread. |
| 260 | * |
| 261 | * @author dennisg |
| 262 | * |
| 263 | */ |
| 264 | private class WaitForStartFramework implements Callable<Object>, FrameworkListener |
| 265 | { |
| 266 | |
| 267 | private final CountDownLatch m_latch = new CountDownLatch( 1 ); |
| 268 | |
| 269 | |
| 270 | public Object call() throws Exception |
| 271 | { |
| 272 | boolean addedAsListener = false; |
| 273 | if ( m_context.getBundle( 0 ).getState() == Bundle.ACTIVE ) |
| 274 | { |
| 275 | m_latch.countDown(); |
| 276 | debug( "Starting Device Manager immediately" ); |
| 277 | } |
| 278 | else |
| 279 | { |
| 280 | m_context.addFrameworkListener( this ); |
| 281 | addedAsListener = true; |
| 282 | debug( "Waiting for framework to start" ); |
| 283 | } |
| 284 | |
| 285 | m_latch.await(); |
| 286 | for ( Map.Entry<ServiceReference, Object> entry : m_devices.entrySet() ) |
| 287 | { |
| 288 | submit( new DriverAttachAlgorithm( entry.getKey(), entry.getValue() ) ); |
| 289 | } |
| 290 | // cleanup |
| 291 | if ( addedAsListener ) |
| 292 | { |
| 293 | m_context.removeFrameworkListener( this ); |
| 294 | } |
| 295 | return null; |
| 296 | } |
| 297 | |
| 298 | |
| 299 | // FrameworkListener method |
| 300 | public void frameworkEvent( FrameworkEvent event ) |
| 301 | { |
| 302 | switch ( event.getType() ) |
| 303 | { |
| 304 | case FrameworkEvent.STARTED: |
| 305 | debug( "Framework has started" ); |
| 306 | m_latch.countDown(); |
| 307 | break; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | |
| 312 | @Override |
| 313 | public String toString() |
| 314 | { |
| 315 | return getClass().getSimpleName(); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | private class LoggedCall implements Callable<Object> |
| 320 | { |
| 321 | |
| 322 | private final Callable<Object> m_call; |
| 323 | |
| 324 | |
| 325 | public LoggedCall( Callable<Object> call ) |
| 326 | { |
| 327 | m_call = call; |
| 328 | } |
| 329 | |
| 330 | |
| 331 | private String getName() |
| 332 | { |
| 333 | return m_call.getClass().getSimpleName(); |
| 334 | } |
| 335 | |
| 336 | |
| 337 | public Object call() throws Exception |
| 338 | { |
| 339 | |
| 340 | try |
| 341 | { |
| 342 | return m_call.call(); |
| 343 | } |
| 344 | catch ( Exception e ) |
| 345 | { |
| 346 | error( "call failed: " + getName(), e ); |
| 347 | throw e; |
| 348 | } |
| 349 | catch ( Throwable e ) |
| 350 | { |
| 351 | error( "call failed: " + getName(), e ); |
| 352 | throw new RuntimeException( e ); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | } |
| 357 | |
| 358 | private class DelayedCall implements Callable<Object> |
| 359 | { |
| 360 | |
| 361 | private final Callable<Object> m_call; |
| 362 | |
| 363 | |
| 364 | public DelayedCall( Callable<Object> call ) |
| 365 | { |
| 366 | m_call = call; |
| 367 | } |
| 368 | |
| 369 | |
| 370 | private String getName() |
| 371 | { |
| 372 | return m_call.getClass().getSimpleName(); |
| 373 | } |
| 374 | |
| 375 | |
| 376 | public Object call() throws Exception |
| 377 | { |
| 378 | info( "Delayed call: " + getName() ); |
| 379 | return m_worker.submit( m_call ); |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * Checks for Idle devices, and attaches them |
| 385 | * |
| 386 | * @author dennisg |
| 387 | * |
| 388 | */ |
| 389 | private class CheckForIdleDevices implements Callable<Object> |
| 390 | { |
| 391 | |
| 392 | public Object call() throws Exception |
| 393 | { |
| 394 | debug( "START - check for idle devices" ); |
| 395 | for ( ServiceReference ref : getIdleDevices() ) |
| 396 | { |
| 397 | info( "IDLE: " + ref.getBundle().getSymbolicName() ); |
| 398 | submit( new DriverAttachAlgorithm( ref, m_devices.get( ref ) ) ); |
| 399 | } |
| 400 | |
| 401 | submit( new IdleDriverUninstallAlgorithm() ); |
| 402 | debug( "STOP - check for idle devices" ); |
| 403 | return null; |
| 404 | } |
| 405 | |
| 406 | |
| 407 | /** |
| 408 | * get a list of all idle devices. |
| 409 | * |
| 410 | * @return |
| 411 | */ |
| 412 | private List<ServiceReference> getIdleDevices() |
| 413 | { |
| 414 | List<ServiceReference> list = new ArrayList<ServiceReference>(); |
| 415 | |
| 416 | for ( ServiceReference ref : m_devices.keySet() ) |
| 417 | { |
| 418 | info( "checking if idle: " + ref.getBundle().getSymbolicName() ); |
| 419 | |
| 420 | final Bundle[] usingBundles = ref.getUsingBundles(); |
| 421 | for ( Bundle bundle : usingBundles ) |
| 422 | { |
| 423 | if ( isDriverBundle( bundle ) ) |
| 424 | { |
| 425 | info( "used by driver: " + bundle.getSymbolicName() ); |
| 426 | debug( "not idle: " + ref.getBundle().getSymbolicName() ); |
Marcel Offermans | 613a620 | 2009-03-11 22:31:44 +0000 | [diff] [blame] | 427 | break; |
| 428 | } |
Stuart McCulloch | 0a0508c | 2009-04-16 09:41:41 +0000 | [diff] [blame] | 429 | |
| 430 | list.add( ref ); |
| 431 | |
Marcel Offermans | 613a620 | 2009-03-11 22:31:44 +0000 | [diff] [blame] | 432 | } |
| 433 | } |
| 434 | return list; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | |
| 439 | private boolean isDriverBundle( Bundle bundle ) |
| 440 | { |
| 441 | ServiceReference[] refs = bundle.getRegisteredServices(); |
| 442 | for ( ServiceReference ref : refs ) |
| 443 | { |
| 444 | if ( m_driverImplFilter.match( ref ) ) |
| 445 | { |
| 446 | return true; |
| 447 | } |
| 448 | } |
| 449 | return false; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * |
| 454 | * Used to uninstall unused drivers |
| 455 | * |
| 456 | * @author dennisg |
| 457 | * |
| 458 | */ |
| 459 | private class IdleDriverUninstallAlgorithm implements Callable<Object> |
| 460 | { |
| 461 | |
| 462 | public Object call() throws Exception |
| 463 | { |
| 464 | |
| 465 | info( "cleaning driver cache" ); |
| 466 | for ( DriverAttributes da : m_drivers.values() ) |
| 467 | { |
| 468 | // just call the tryUninstall; the da itself |
| 469 | // will know if it should really uninstall the driver. |
| 470 | da.tryUninstall(); |
| 471 | } |
| 472 | |
| 473 | return null; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | private class DriverAttachAlgorithm implements Callable<Object> |
| 478 | { |
| 479 | |
| 480 | private final ServiceReference m_ref; |
| 481 | |
| 482 | private final Device m_device; |
| 483 | |
| 484 | private List<DriverAttributes> m_included; |
| 485 | |
| 486 | private List<DriverAttributes> m_excluded; |
| 487 | |
| 488 | private final DriverLoader m_driverLoader; |
| 489 | |
| 490 | private DriverAttributes m_finalDriver; |
| 491 | |
| 492 | |
| 493 | public DriverAttachAlgorithm( ServiceReference ref, Object obj ) |
| 494 | { |
| 495 | m_ref = ref; |
| 496 | if ( m_deviceImplFilter.match( ref ) ) |
| 497 | { |
| 498 | m_device = Device.class.cast( obj ); |
| 499 | } |
| 500 | else |
| 501 | { |
| 502 | m_device = null; |
| 503 | } |
| 504 | |
| 505 | m_driverLoader = new DriverLoader( DeviceManager.this, m_context ); |
| 506 | } |
| 507 | |
| 508 | |
| 509 | @SuppressWarnings("all") |
| 510 | private Dictionary createDictionary( ServiceReference ref ) |
| 511 | { |
| 512 | final Properties p = new Properties(); |
| 513 | |
| 514 | for ( String key : ref.getPropertyKeys() ) |
| 515 | { |
| 516 | p.put( key, ref.getProperty( key ) ); |
| 517 | } |
| 518 | return p; |
| 519 | } |
| 520 | |
| 521 | |
| 522 | @SuppressWarnings("all") |
| 523 | public Object call() throws Exception |
| 524 | { |
| 525 | info( "finding suitable driver for: " + Util.showDevice( m_ref ) ); |
| 526 | |
| 527 | final Dictionary dict = createDictionary( m_ref ); |
| 528 | |
| 529 | // first create a copy of all the drivers that are already there. |
| 530 | // during the process, drivers will be added, but also excluded. |
| 531 | m_included = new ArrayList<DriverAttributes>( m_drivers.values() ); |
| 532 | m_excluded = new ArrayList<DriverAttributes>(); |
| 533 | |
| 534 | // first find matching driver bundles |
| 535 | // if there are no driver locators |
| 536 | // we'll have to do with the drivers that where |
| 537 | // added 'manually' |
| 538 | List<String> driverIds = m_driverLoader.findDrivers( m_locators, dict ); |
| 539 | |
| 540 | // remove the driverIds that are already available |
| 541 | for ( DriverAttributes da : m_drivers.values() ) |
| 542 | { |
| 543 | driverIds.remove( da.getDriverId() ); |
| 544 | } |
| 545 | driverIds.removeAll( m_drivers.keySet() ); |
| 546 | try |
| 547 | { |
| 548 | return driverAttachment( dict, driverIds.toArray( new String[0] ) ); |
| 549 | } |
| 550 | finally |
| 551 | { |
| 552 | // unload loaded drivers |
| 553 | // that were unnecessarily loaded |
| 554 | m_driverLoader.unload( m_finalDriver ); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | |
| 559 | @SuppressWarnings("all") |
| 560 | private Object driverAttachment( Dictionary dict, String[] driverIds ) throws Exception |
| 561 | { |
| 562 | m_finalDriver = null; |
| 563 | |
| 564 | // remove the excluded drivers |
| 565 | m_included.removeAll( m_excluded ); |
| 566 | |
| 567 | // now load the drivers |
| 568 | List<ServiceReference> driverRefs = m_driverLoader.loadDrivers( m_locators, driverIds ); |
| 569 | // these are the possible driver references that have been added |
| 570 | // add the to the list of included drivers |
| 571 | for ( ServiceReference serviceReference : driverRefs ) |
| 572 | { |
| 573 | DriverAttributes da = m_drivers.get( serviceReference ); |
| 574 | if ( da != null ) |
| 575 | { |
| 576 | m_included.add( da ); |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | // now start matching all drivers |
| 581 | final DriverMatcher mi = new DriverMatcher( DeviceManager.this ); |
| 582 | |
| 583 | for ( DriverAttributes driver : m_included ) |
| 584 | { |
| 585 | try |
| 586 | { |
| 587 | int match = driver.match( m_ref ); |
| 588 | if ( match <= Device.MATCH_NONE ) |
| 589 | continue; |
| 590 | mi.add( match, driver ); |
| 591 | } |
| 592 | catch ( Throwable t ) |
| 593 | { |
| 594 | error( "match threw an exception", new Exception( t ) ); |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | // get the best match |
| 599 | Match bestMatch; |
| 600 | |
| 601 | // local copy |
| 602 | final DriverSelector selector = m_selector; |
| 603 | if ( selector != null ) |
| 604 | { |
| 605 | bestMatch = mi.selectBestMatch( m_ref, selector ); |
| 606 | } |
| 607 | else |
| 608 | { |
| 609 | bestMatch = mi.getBestMatch(); |
| 610 | } |
| 611 | |
| 612 | if ( bestMatch == null ) |
| 613 | { |
| 614 | noDriverFound(); |
| 615 | // really return |
| 616 | return null; |
| 617 | } |
| 618 | |
| 619 | String driverId = String.class.cast( bestMatch.getDriver().getProperty( Constants.DRIVER_ID ) ); |
| 620 | |
| 621 | debug( "best match: " + driverId ); |
| 622 | m_finalDriver = m_drivers.get( bestMatch.getDriver() ); |
| 623 | |
| 624 | if ( m_finalDriver == null ) |
| 625 | { |
| 626 | error( "we found a driverId, but not the corresponding driver: " + driverId, null ); |
| 627 | noDriverFound(); |
| 628 | return null; |
| 629 | } |
| 630 | |
| 631 | // here we get serious... |
| 632 | try |
| 633 | { |
| 634 | debug( "attaching to: " + driverId ); |
| 635 | String newDriverId = m_finalDriver.attach( m_ref ); |
| 636 | if ( newDriverId == null ) |
| 637 | { |
| 638 | // successful attach |
| 639 | return null; |
| 640 | } |
| 641 | // its a referral |
| 642 | info( "attach led to a referral to: " + newDriverId ); |
| 643 | m_excluded.add( m_finalDriver ); |
| 644 | return driverAttachment( dict, new String[] |
| 645 | { newDriverId } ); |
| 646 | } |
| 647 | catch ( Throwable t ) |
| 648 | { |
| 649 | error( "attach failed due to an exception", t ); |
| 650 | } |
| 651 | m_excluded.add( m_finalDriver ); |
| 652 | return driverAttachment( dict, driverIds ); |
| 653 | } |
| 654 | |
| 655 | |
| 656 | private void noDriverFound() |
| 657 | { |
| 658 | debug( "no suitable driver found for: " + Util.showDevice( m_ref ) ); |
| 659 | if ( m_device != null ) |
| 660 | { |
| 661 | m_device.noDriverFound(); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | |
| 666 | @Override |
| 667 | public String toString() |
| 668 | { |
| 669 | return getClass().getSimpleName();// + ": " + |
| 670 | // Util.showDevice(m_ref); |
| 671 | } |
| 672 | |
| 673 | } |
| 674 | } |