/[svn]/linuxsampler/trunk/src/engines/gig/DiskThread.cpp
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Diff of /linuxsampler/trunk/src/engines/gig/DiskThread.cpp

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revision 53 by schoenebeck, Mon Apr 26 17:15:51 2004 UTC revision 1789 by iliev, Sat Nov 1 19:01:27 2008 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 by Benno Senoner                                   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 48  namespace LinuxSampler { namespace gig { Line 49  namespace LinuxSampler { namespace gig {
49      void DiskThread::Reset() {      void DiskThread::Reset() {
50          bool running = this->IsRunning();          bool running = this->IsRunning();
51          if (running) this->StopThread();          if (running) this->StopThread();
52          for (int i = 0; i < MAX_INPUT_STREAMS; i++) {          for (int i = 0; i < CONFIG_MAX_STREAMS; i++) {
53              pStreams[i]->Kill();              pStreams[i]->Kill();
54          }          }
55          for (int i = 1; i <= MAX_INPUT_STREAMS; i++) {          for (int i = 1; i <= CONFIG_MAX_STREAMS; i++) {
56              pCreatedStreams[i] = NULL;              pCreatedStreams[i] = NULL;
57          }          }
58          GhostQueue->init();          GhostQueue->init();
59          CreationQueue->init();          CreationQueue->init();
60          DeletionQueue->init();          DeletionQueue->init();
61          ActiveStreamCount = 0;          DeletionNotificationQueue.init();
62    
63            // make sure that all DimensionRegions are released
64            while (DeleteDimregQueue->read_space() > 0) {
65                ::gig::DimensionRegion* dimreg;
66                DeleteDimregQueue->pop(&dimreg);
67                pInstruments->HandBackDimReg(dimreg);
68            }
69            DeleteDimregQueue->init();
70            SetActiveStreamCount(0);
71          ActiveStreamCountMax = 0;          ActiveStreamCountMax = 0;
72          if (running) this->StartThread(); // start thread only if it was running before          if (running) this->StartThread(); // start thread only if it was running before
73      }      }
# Line 85  namespace LinuxSampler { namespace gig { Line 95  namespace LinuxSampler { namespace gig {
95          std::stringstream ss;          std::stringstream ss;
96          for (uint i = 0; i < this->Streams; i++) {          for (uint i = 0; i < this->Streams; i++) {
97              if (pStreams[i]->GetState() == Stream::state_unused) continue;              if (pStreams[i]->GetState() == Stream::state_unused) continue;
98              uint bufferfill = (uint) ((float) pStreams[i]->GetReadSpace() / (float) STREAM_BUFFER_SIZE * 100);              uint bufferfill = (uint) ((float) pStreams[i]->GetReadSpace() / (float) CONFIG_STREAM_BUFFER_SIZE * 100);
99              uint streamid   = (uint) pStreams[i]->GetHandle();              uint streamid   = (uint) pStreams[i]->GetHandle();
100              if (!streamid) continue;              if (!streamid) continue;
101    
# Line 102  namespace LinuxSampler { namespace gig { Line 112  namespace LinuxSampler { namespace gig {
112       * Returns -1 if command queue or pickup pool is full, 0 on success (will be       * Returns -1 if command queue or pickup pool is full, 0 on success (will be
113       * called by audio thread within the voice class).       * called by audio thread within the voice class).
114       */       */
115      int DiskThread::OrderNewStream(Stream::reference_t* pStreamRef, ::gig::Sample* pSample, unsigned long SampleOffset, bool DoLoop) {      int DiskThread::OrderNewStream(Stream::reference_t* pStreamRef, ::gig::DimensionRegion* pDimRgn, unsigned long SampleOffset, bool DoLoop) {
116          dmsg(4,("Disk Thread: new stream ordered\n"));          dmsg(4,("Disk Thread: new stream ordered\n"));
117          if (CreationQueue->write_space() < 1) {          if (CreationQueue->write_space() < 1) {
118              dmsg(1,("DiskThread: Order queue full!\n"));              dmsg(1,("DiskThread: Order queue full!\n"));
119              return -1;              return -1;
120          }          }
121    
122            const Stream::OrderID_t newOrder = CreateOrderID();
123            if (!newOrder) {
124                    dmsg(1,("DiskThread: there was no free slot\n"));
125                    return -1; // there was no free slot
126            }
127    
128          pStreamRef->State   = Stream::state_active;          pStreamRef->State   = Stream::state_active;
129          pStreamRef->OrderID = CreateOrderID();          pStreamRef->OrderID = newOrder;
130          pStreamRef->hStream = CreateHandle();          pStreamRef->hStream = CreateHandle();
131          pStreamRef->pStream = NULL; // a stream has to be activated by the disk thread first          pStreamRef->pStream = NULL; // a stream has to be activated by the disk thread first
132    
         if (!pStreamRef->OrderID) return -1; // there was no free slot  
   
133          create_command_t cmd;          create_command_t cmd;
134          cmd.OrderID      = pStreamRef->OrderID;          cmd.OrderID      = pStreamRef->OrderID;
135          cmd.hStream      = pStreamRef->hStream;          cmd.hStream      = pStreamRef->hStream;
136          cmd.pStreamRef   = pStreamRef;          cmd.pStreamRef   = pStreamRef;
137          cmd.pSample      = pSample;          cmd.pDimRgn      = pDimRgn;
138          cmd.SampleOffset = SampleOffset;          cmd.SampleOffset = SampleOffset;
139          cmd.DoLoop       = DoLoop;          cmd.DoLoop       = DoLoop;
140    
# Line 129  namespace LinuxSampler { namespace gig { Line 143  namespace LinuxSampler { namespace gig {
143      }      }
144    
145      /**      /**
146       * Returns -1 if command queue is full, 0 on success (will be called by audio       * Request the disk thread to delete the given disk stream. This method
147       * thread within the voice class).       * will return immediately, thus it won't block until the respective voice
148         * was actually deleted. (Called by audio thread within the Voice class).
149         *
150         * @param pStreamRef           - stream that shall be deleted
151         * @param bRequestNotification - set to true in case you want to receive a
152         *                               notification once the stream has actually
153         *                               been deleted
154         * @returns 0 on success, -1 if command queue is full
155         * @see AskForDeletedStream()
156       */       */
157      int DiskThread::OrderDeletionOfStream(Stream::reference_t* pStreamRef) {      int DiskThread::OrderDeletionOfStream(Stream::reference_t* pStreamRef, bool bRequestNotification) {
158          dmsg(4,("Disk Thread: stream deletion ordered\n"));          dmsg(4,("Disk Thread: stream deletion ordered\n"));
159          if (DeletionQueue->write_space() < 1) {          if (DeletionQueue->write_space() < 1) {
160              dmsg(1,("DiskThread: Deletion queue full!\n"));              dmsg(1,("DiskThread: Deletion queue full!\n"));
# Line 143  namespace LinuxSampler { namespace gig { Line 165  namespace LinuxSampler { namespace gig {
165          cmd.pStream = pStreamRef->pStream;          cmd.pStream = pStreamRef->pStream;
166          cmd.hStream = pStreamRef->hStream;          cmd.hStream = pStreamRef->hStream;
167          cmd.OrderID = pStreamRef->OrderID;          cmd.OrderID = pStreamRef->OrderID;
168            cmd.bNotify = bRequestNotification;
169    
170          DeletionQueue->push(&cmd);          DeletionQueue->push(&cmd);
171          return 0;          return 0;
172      }      }
173    
174      /**      /**
175         * Tell the disk thread to release a dimension region that belongs
176         * to an instrument which isn't loaded anymore. The disk thread
177         * will hand back the dimension region to the instrument resource
178         * manager. (OrderDeletionOfDimreg is called from the audio thread
179         * when a voice dies.)
180         */
181        int DiskThread::OrderDeletionOfDimreg(::gig::DimensionRegion* dimreg) {
182            dmsg(4,("Disk Thread: dimreg deletion ordered\n"));
183            if (DeleteDimregQueue->write_space() < 1) {
184                dmsg(1,("DiskThread: DeleteDimreg queue full!\n"));
185                return -1;
186            }
187            DeleteDimregQueue->push(&dimreg);
188            return 0;
189        }
190    
191        /**
192       * Returns the pointer to a disk stream if the ordered disk stream       * Returns the pointer to a disk stream if the ordered disk stream
193       * represented by the \a StreamOrderID was already activated by the disk       * represented by the \a StreamOrderID was already activated by the disk
194       * thread, returns NULL otherwise. If the call was successful, thus if it       * thread, returns NULL otherwise. If the call was successful, thus if it
# Line 173  namespace LinuxSampler { namespace gig { Line 213  namespace LinuxSampler { namespace gig {
213          return NULL;          return NULL;
214      }      }
215    
216        /**
217         * In case the original sender requested a notification with his stream
218         * deletion order, he can use this method to poll if the respective stream
219         * has actually been deleted.
220         *
221         * @returns handle / identifier of the deleted stream, or
222         *          Stream::INVALID_HANDLE if no notification present
223         */
224        Stream::Handle DiskThread::AskForDeletedStream() {
225            if (DeletionNotificationQueue.read_space()) {
226                Stream::Handle hStream;
227                DeletionNotificationQueue.pop(&hStream);
228                return hStream;
229            } else return Stream::INVALID_HANDLE; // no notification received yet
230        }
231    
232    
233    
234      // #########################################################################      // #########################################################################
# Line 180  namespace LinuxSampler { namespace gig { Line 236  namespace LinuxSampler { namespace gig {
236      // #         (following code should only be executed by the disk thread)      // #         (following code should only be executed by the disk thread)
237    
238    
239      DiskThread::DiskThread(uint BufferWrapElements) : Thread(false, 1, -2) {      DiskThread::DiskThread(uint BufferWrapElements, InstrumentResourceManager* pInstruments) :
240          CreationQueue       = new RingBuffer<create_command_t>(1024);          Thread(true, false, 1, -2),
241          DeletionQueue       = new RingBuffer<delete_command_t>(1024);          pInstruments(pInstruments),
242          GhostQueue          = new RingBuffer<Stream::Handle>(MAX_INPUT_STREAMS);          DeletionNotificationQueue(4*CONFIG_MAX_STREAMS)
243          Streams             = MAX_INPUT_STREAMS;      {
244          RefillStreamsPerRun = REFILL_STREAMS_PER_RUN;          DecompressionBuffer = ::gig::Sample::CreateDecompressionBuffer(CONFIG_STREAM_MAX_REFILL_SIZE);
245          for (int i = 0; i < MAX_INPUT_STREAMS; i++) {          CreationQueue       = new RingBuffer<create_command_t,false>(4*CONFIG_MAX_STREAMS);
246              pStreams[i] = new Stream(STREAM_BUFFER_SIZE, BufferWrapElements); // 131072 sample words          DeletionQueue       = new RingBuffer<delete_command_t,false>(4*CONFIG_MAX_STREAMS);
247            GhostQueue          = new RingBuffer<delete_command_t,false>(CONFIG_MAX_STREAMS);
248            DeleteDimregQueue   = new RingBuffer< ::gig::DimensionRegion*,false>(4*CONFIG_MAX_STREAMS);
249            Streams             = CONFIG_MAX_STREAMS;
250            RefillStreamsPerRun = CONFIG_REFILL_STREAMS_PER_RUN;
251            for (int i = 0; i < CONFIG_MAX_STREAMS; i++) {
252                pStreams[i] = new Stream(&DecompressionBuffer, CONFIG_STREAM_BUFFER_SIZE, BufferWrapElements); // 131072 sample words
253          }          }
254          for (int i = 1; i <= MAX_INPUT_STREAMS; i++) {          for (int i = 1; i <= CONFIG_MAX_STREAMS; i++) {
255              pCreatedStreams[i] = NULL;              pCreatedStreams[i] = NULL;
256          }          }
257            ActiveStreamCountMax = 0;
258      }      }
259    
260      DiskThread::~DiskThread() {      DiskThread::~DiskThread() {
261          for (int i = 0; i < MAX_INPUT_STREAMS; i++) {          for (int i = 0; i < CONFIG_MAX_STREAMS; i++) {
262              if (pStreams[i]) delete pStreams[i];              if (pStreams[i]) delete pStreams[i];
263          }          }
264          if (CreationQueue) delete CreationQueue;          if (CreationQueue) delete CreationQueue;
265          if (DeletionQueue) delete DeletionQueue;          if (DeletionQueue) delete DeletionQueue;
266          if (GhostQueue)    delete GhostQueue;          if (GhostQueue)    delete GhostQueue;
267            if (DeleteDimregQueue) delete DeleteDimregQueue;
268            ::gig::Sample::DestroyDecompressionBuffer(DecompressionBuffer);
269      }      }
270    
271      int DiskThread::Main() {      int DiskThread::Main() {
272          dmsg(3,("Disk thread running\n"));          dmsg(3,("Disk thread running\n"));
273          while (true) {          while (true) {
274                #if !defined(WIN32)
275                pthread_testcancel(); // mandatory for OSX
276                #endif
277                            #if CONFIG_PTHREAD_TESTCANCEL
278                            TestCancel();
279                            #endif
280              IsIdle = true; // will be set to false if a stream got filled              IsIdle = true; // will be set to false if a stream got filled
281    
282              // if there are ghost streams, delete them              // if there are ghost streams, delete them
283              for (int i = 0; i < GhostQueue->read_space(); i++) { //FIXME: unefficient              for (int i = 0; i < GhostQueue->read_space(); i++) { //FIXME: unefficient
284                  Stream::Handle hGhostStream;                  delete_command_t ghostStream;
285                  GhostQueue->pop(&hGhostStream);                  GhostQueue->pop(&ghostStream);
286                  bool found = false;                  bool found = false;
287                  for (int i = 0; i < this->Streams; i++) {                  for (int i = 0; i < this->Streams; i++) {
288                      if (pStreams[i]->GetHandle() == hGhostStream) {                      if (pStreams[i]->GetHandle() == ghostStream.hStream) {
289                          pStreams[i]->Kill();                          pStreams[i]->Kill();
290                          found = true;                          found = true;
291                            // if original sender requested a notification, let him know now
292                            if (ghostStream.bNotify)
293                                DeletionNotificationQueue.push(&ghostStream.hStream);
294                          break;                          break;
295                      }                      }
296                  }                  }
297                  if (!found) GhostQueue->push(&hGhostStream); // put ghost stream handle back to the queue                  if (!found) GhostQueue->push(&ghostStream); // put ghost stream handle back to the queue
298              }              }
299    
300              // if there are creation commands, create new streams              // if there are creation commands, create new streams
# Line 231  namespace LinuxSampler { namespace gig { Line 305  namespace LinuxSampler { namespace gig {
305              }              }
306    
307              // if there are deletion commands, delete those streams              // if there are deletion commands, delete those streams
308              while (Stream::UnusedStreams < Streams && DeletionQueue->read_space() > 0) {              while (Stream::UnusedStreams < Stream::TotalStreams && DeletionQueue->read_space() > 0) {
309                  delete_command_t command;                  delete_command_t command;
310                  DeletionQueue->pop(&command);                  DeletionQueue->pop(&command);
311                  DeleteStream(command);                  DeleteStream(command);
312              }              }
313    
314                // release DimensionRegions that belong to instruments
315                // that are no longer loaded
316                while (DeleteDimregQueue->read_space() > 0) {
317                    ::gig::DimensionRegion* dimreg;
318                    DeleteDimregQueue->pop(&dimreg);
319                    pInstruments->HandBackDimReg(dimreg);
320                }
321    
322              RefillStreams(); // refill the most empty streams              RefillStreams(); // refill the most empty streams
323    
324              // if nothing was done during this iteration (eg no streambuffer              // if nothing was done during this iteration (eg no streambuffer
325              // filled with data) then sleep for 50ms              // filled with data) then sleep for 30ms
326              if (IsIdle) usleep(30000);              if (IsIdle) usleep(30000);
327    
328              int streamsInUsage = 0;              int streamsInUsage = 0;
329              for (int i = Streams - 1; i >= 0; i--) {              for (int i = Streams - 1; i >= 0; i--) {
330                  if (pStreams[i]->GetState() != Stream::state_unused) streamsInUsage++;                  if (pStreams[i]->GetState() != Stream::state_unused) streamsInUsage++;
331              }              }
332              ActiveStreamCount = streamsInUsage;              SetActiveStreamCount(streamsInUsage);
333              if (streamsInUsage > ActiveStreamCountMax) ActiveStreamCountMax = streamsInUsage;              if (streamsInUsage > ActiveStreamCountMax) ActiveStreamCountMax = streamsInUsage;
334          }          }
335    
# Line 267  namespace LinuxSampler { namespace gig { Line 349  namespace LinuxSampler { namespace gig {
349              std::cerr << "No unused stream found (OrderID:" << Command.OrderID << ") - report if this happens, this is a bug!\n" << std::flush;              std::cerr << "No unused stream found (OrderID:" << Command.OrderID << ") - report if this happens, this is a bug!\n" << std::flush;
350              return;              return;
351          }          }
352          newstream->Launch(Command.hStream, Command.pStreamRef, Command.pSample, Command.SampleOffset, Command.DoLoop);          newstream->Launch(Command.hStream, Command.pStreamRef, Command.pDimRgn, Command.SampleOffset, Command.DoLoop);
353          dmsg(4,("new Stream launched by disk thread (OrderID:%d,StreamHandle:%d)\n", Command.OrderID, Command.hStream));          dmsg(4,("new Stream launched by disk thread (OrderID:%d,StreamHandle:%d)\n", Command.OrderID, Command.hStream));
354          if (pCreatedStreams[Command.OrderID] != SLOT_RESERVED) {          if (pCreatedStreams[Command.OrderID] != SLOT_RESERVED) {
355              std::cerr << "DiskThread: Slot " << Command.OrderID << " already occupied! Please report this!\n" << std::flush;              std::cerr << "DiskThread: Slot " << Command.OrderID << " already occupied! Please report this!\n" << std::flush;
# Line 286  namespace LinuxSampler { namespace gig { Line 368  namespace LinuxSampler { namespace gig {
368              if (pStream && pStream != SLOT_RESERVED) {              if (pStream && pStream != SLOT_RESERVED) {
369                  pStream->Kill();                  pStream->Kill();
370                  pCreatedStreams[Command.OrderID] = NULL; // free slot for new order                  pCreatedStreams[Command.OrderID] = NULL; // free slot for new order
371                    // if original sender requested a notification, let him know now
372                    if (Command.bNotify)
373                        DeletionNotificationQueue.push(&Command.hStream);
374                  return;                  return;
375              }              }
376    
377              // the stream was not created yet              // the stream was not created yet
378              if (GhostQueue->write_space() > 0) {              if (GhostQueue->write_space() > 0) {
379                  GhostQueue->push(&Command.hStream);                  GhostQueue->push(&Command);
380                } else { // error, queue full
381                    if (Command.bNotify) {
382                        dmsg(1,("DiskThread: GhostQueue full! (might lead to dead lock with instrument editor!)\n"));
383                    } else {
384                        dmsg(1,("DiskThread: GhostQueue full!\n"));
385                    }
386              }              }
             else dmsg(1,("DiskThread: GhostQueue full!\n"));  
387          }          }
388      }      }
389    
# Line 313  namespace LinuxSampler { namespace gig { Line 403  namespace LinuxSampler { namespace gig {
403    
404                  int capped_writespace = writespace;                  int capped_writespace = writespace;
405                  // if there is too much buffer space available then cut the read/write                  // if there is too much buffer space available then cut the read/write
406                  // size to MAX_REFILL_SIZE which is by default 65536 samples = 256KBytes                  // size to CONFIG_STREAM_MAX_REFILL_SIZE which is by default 65536 samples = 256KBytes
407                  if (writespace > MAX_REFILL_SIZE) capped_writespace = MAX_REFILL_SIZE;                  if (writespace > CONFIG_STREAM_MAX_REFILL_SIZE) capped_writespace = CONFIG_STREAM_MAX_REFILL_SIZE;
408    
409                  // adjust the amount to read in order to ensure that the buffer wraps correctly                  // adjust the amount to read in order to ensure that the buffer wraps correctly
410                  int read_amount = pStreams[i]->AdjustWriteSpaceToAvoidBoundary(writespace, capped_writespace);                  int read_amount = pStreams[i]->AdjustWriteSpaceToAvoidBoundary(writespace, capped_writespace);
411                  // if we wasn't able to refill one of the stream buffers by more than                  // if we wasn't able to refill one of the stream buffers by more than
412                  // MIN_REFILL_SIZE we'll send the disk thread to sleep later                  // CONFIG_STREAM_MIN_REFILL_SIZE we'll send the disk thread to sleep later
413                  if (pStreams[i]->ReadAhead(read_amount) > MIN_REFILL_SIZE) this->IsIdle = false;                  if (pStreams[i]->ReadAhead(read_amount) > CONFIG_STREAM_MIN_REFILL_SIZE) this->IsIdle = false;
414              }              }
415          }          }
416      }      }
# Line 335  namespace LinuxSampler { namespace gig { Line 425  namespace LinuxSampler { namespace gig {
425    
426      /// order ID Generator      /// order ID Generator
427      Stream::OrderID_t DiskThread::CreateOrderID() {      Stream::OrderID_t DiskThread::CreateOrderID() {
428          static uint32_t counter = 0;          static Stream::OrderID_t counter(0);
429          for (int i = 0; i < MAX_INPUT_STREAMS; i++) {          for (int i = 0; i < CONFIG_MAX_STREAMS; i++) {
430              if (counter == MAX_INPUT_STREAMS) counter = 1; // we use '0' as 'invalid order' only, so we skip 0              if (counter == CONFIG_MAX_STREAMS) counter = 1; // we use '0' as 'invalid order' only, so we skip 0
431              else                              counter++;              else                              counter++;
432              if (!pCreatedStreams[counter]) {              if (!pCreatedStreams[counter]) {
433                  pCreatedStreams[counter] = SLOT_RESERVED; // mark this slot as reserved                  pCreatedStreams[counter] = SLOT_RESERVED; // mark this slot as reserved
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