]> git.uio.no Git - u/mrichter/AliRoot.git/blame - RAW/AliMDC.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Missing includes
[u/mrichter/AliRoot.git] / RAW / AliMDC.cxx
CommitLineData
a197a4ce 1// @(#)alimdc:$Name$:$Id$
2// Author: Fons Rademakers 26/11/99
3// Updated: Dario Favretto 15/04/2003
4
5/**************************************************************************
6 * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
7 * *
8 * Author: The ALICE Off-line Project. *
9 * Contributors are mentioned in the code where appropriate. *
10 * *
11 * Permission to use, copy, modify and distribute this software and its *
12 * documentation strictly for non-commercial purposes is hereby granted *
13 * without fee, provided that the above copyright notice appears in all *
14 * copies and that both the copyright notice and this permission notice *
15 * appear in the supporting documentation. The authors make no claims *
16 * about the suitability of this software for any purpose. It is *
17 * provided "as is" without express or implied warranty. *
18 **************************************************************************/
19
8c49c5a5 20/* $Id$ */
21
a197a4ce 22//////////////////////////////////////////////////////////////////////////
23// //
24// AliMDC //
25// //
26// Set of classes defining the ALICE RAW event format. The AliRawEvent //
27// class defines a RAW event. It consists of an AliEventHeader object //
28// an AliEquipmentHeader object, an AliRawData object and an array of //
29// sub-events, themselves also being AliRawEvents. The number of //
30// sub-events depends on the number of DATE LDC's. //
31// The AliRawEvent objects are written to a ROOT file using different //
32// technologies, i.e. to local disk via AliRawDB or via rfiod using //
33// AliRawRFIODB or via rootd using AliRawRootdDB or to CASTOR via //
34// rootd using AliRawCastorDB (and for performance testing there is //
35// also AliRawNullDB). //
36// The AliRunDB class provides the interface to the run and file //
37// catalogues (AliEn or plain MySQL). //
38// The AliStats class provides statics information that is added as //
39// a single keyed object to each raw file. //
40// The AliTagDB provides an interface to a TAG database. //
41// The AliMDC class is usid by the "alimdc" stand-alone program //
42// that reads data directly from DATE. //
43// //
44//////////////////////////////////////////////////////////////////////////
45
8c49c5a5 46#include <sys/types.h>
47#include <sys/stat.h>
48
a197a4ce 49#include <errno.h>
50
51#include <TSystem.h>
52#include <TError.h>
53#include <TStopwatch.h>
54
55#ifdef ALI_DATE
56#include "event.h"
57#endif
58#ifdef USE_EB
59#include "libDateEb.h"
60#endif
61
62#include "AliRawEvent.h"
63#include "AliRawEventHeader.h"
64#include "AliRawEquipmentHeader.h"
65#include "AliRawData.h"
66#include "AliStats.h"
67#include "AliRawDB.h"
68#include "AliRawRFIODB.h"
69#include "AliRawCastorDB.h"
70#include "AliRawRootdDB.h"
71#include "AliRawNullDB.h"
72#include "AliTagDB.h"
73
74#include "AliMDC.h"
75
76
77ClassImp(AliMDC)
78
79
80#define ALIDEBUG(level) \
81 if (AliMDC::Instance() && (AliMDC::Instance()->GetDebugLevel() >= (level)))
82
83
84// Fixed file system locations for the different DB's
85#ifdef USE_RDM
86const char* const AliMDC::fgkFifo = "/tmp/alimdc.fifo";
87const char* const AliMDC::fgkRawDBFS[2] = { "/tmp/mdc1", "/tmp/mdc2" };
88const char* const AliMDC::fgkTagDBFS = "/tmp/mdc1/tags";
89const char* const AliMDC::fgkRunDBFS = "/tmp/mdc1/meta";
90const char* const AliMDC::fgkRFIOFS = "rfio:/castor/cern.ch/user/r/rdm";
91const char* const AliMDC::fgkCastorFS = "castor:/castor/cern.ch/user/r/rdm";
92const char* const AliMDC::fgkRootdFS = "root://localhost//tmp/mdc1";
93const char* const AliMDC::fgkAlienHost = "alien://aliens7.cern.ch:15000/?direct";
94const char* const AliMDC::fgkAlienDir = "/alice_mdc/DC";
95#else
96const char* const AliMDC::fgkFifo = "/tmp/alimdc.fifo";
97const char* const AliMDC::fgkRawDBFS[2] = { "/data1/mdc", "/data2/mdc" };
98const char* const AliMDC::fgkTagDBFS = "/data1/mdc/tags";
99const char* const AliMDC::fgkRunDBFS = "/data1/mdc/meta";
100const char* const AliMDC::fgkRFIOFS = "rfio:/castor/cern.ch/lcg/dc5";
101const char* const AliMDC::fgkCastorFS = "castor:/castor/cern.ch/lcg/dc5";
102const char* const AliMDC::fgkRootdFS = "root://localhost//tmp/mdc1";
103const char* const AliMDC::fgkAlienHost = "alien://aliens7.cern.ch:15000/?direct";
104const char* const AliMDC::fgkAlienDir = "/alice_mdc/DC";
105#endif
106
107// Maximum size of tag db files
108const Double_t AliMDC::fgkMaxTagFileSize = 2.5e8; // 250MB
109
110Bool_t AliMDC::fgDeleteFiles = kFALSE;
111AliMDC* AliMDC::fgInstance = NULL;
112
113
114//______________________________________________________________________________
115AliMDC::AliMDC(Int_t fd, Int_t compress, Double_t maxFileSize, Bool_t useFilter,
116 EWriteMode mode, Bool_t useLoop, Bool_t delFiles)
117{
118 // Create MDC processor object.
119
120 fFd = fd;
121 fCompress = compress;
122 fMaxFileSize = maxFileSize;
123 fUseFilter = useFilter;
124 fWriteMode = mode;
125 fUseLoop = useLoop;
126 fUseFifo = kFALSE;
127 fUseEb = kFALSE;
128 fStopLoop = kFALSE;
129 fNumEvents = 0;
130 fDebugLevel = 0;
131 fgDeleteFiles = delFiles;
132
133 if (fFd == -1) {
134#ifdef USE_EB
135 if (!ebRegister()) {
136 Error("AliMDC", "cannot register with the event builder (%s)",
137 ebGetLastError());
138 return;
139 }
140 fUseEb = kTRUE;
141#else
142 if ((mkfifo(fgkFifo, 0644) < 0) && (errno != EEXIST)) {
143 Error("AliMDC", "cannot create fifo %s", fgkFifo);
144 return;
145 }
146 if ((chmod(fgkFifo, 0666) == -1) && (errno != EPERM)) {
147 Error("AliMDC", "cannot change permission of fifo %s", fgkFifo);
148 return;
149 }
150 if ((fFd = open(fgkFifo, O_RDONLY)) == -1) {
151 Error("AliMDC", "cannot open input file %s", fgkFifo);
152 return;
153 }
154 fUseFifo = kTRUE;
155#endif
156 fUseLoop = kFALSE;
157 }
158
159 printf("<AliMDC::AliMDC>: input = %s, rawdb size = %f, filter = %s, "
160 "looping = %s, compression = %d, delete files = %s",
161 fUseFifo ? "fifo" : (fUseEb ? "eb" : "file"), fMaxFileSize,
162 fUseFilter ? "on" : "off", fUseLoop ? "yes" : "no", fCompress,
163 fgDeleteFiles ? "yes" : "no");
164 if (fWriteMode == kRFIO)
165 printf(", use RFIO\n");
166 else if (fWriteMode == kROOTD)
167 printf(", use rootd\n");
168 else if (fWriteMode == kCASTOR)
169 printf(", use CASTOR/rootd\n");
170 else if (fWriteMode == kDEVNULL)
171 printf(", write raw data to /dev/null\n");
172 else
173 printf("\n");
174
175 // install SIGUSR1 handler to allow clean interrupts
176 gSystem->AddSignalHandler(new AliMDCInterruptHandler(this));
177
178 fgInstance = this;
179}
180
181//______________________________________________________________________________
182AliMDC::AliMDC(const AliMDC& mdc): TObject(mdc)
183{
184// copy constructor
185
186 Fatal("AliMDC", "copy constructor not implemented");
187}
188
189//______________________________________________________________________________
190AliMDC& AliMDC::operator = (const AliMDC& /*mdc*/)
191{
192// assignment operator
193
194 Fatal("operator =", "assignment operator not implemented");
195 return *this;
196}
197
198//______________________________________________________________________________
199Int_t AliMDC::Run()
200{
201 // Run the MDC processor. Read from the input stream and only return
202 // when the input gave and EOF or a fatal error occured. On success 0
203 // is returned, 1 in case of a fatality.
204
205 TStopwatch timer;
206 Int_t status;
207
208 // Make sure needed directories exist
209 const char *dirs[4];
210 dirs[0] = fgkRawDBFS[0];
211 dirs[1] = fgkRawDBFS[1];
212 dirs[2] = fgkTagDBFS;
213 dirs[3] = fgkRunDBFS;
214 for (int idir = 0; idir < 4; idir++) {
215 gSystem->ResetErrno();
216 gSystem->MakeDirectory(dirs[idir]);
217 if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) {
218 SysError("Run", "mkdir %s", dirs[idir]);
219 return 1;
220 }
221 }
222
223 // Used for statistics
224 timer.Start();
225 Double_t told = 0, tnew = 0;
226 Float_t chunkSize = fMaxFileSize/100, nextChunk = chunkSize;
227
228 // Event object used to store event data.
229 AliRawEvent *event = new AliRawEvent;
230
231 // Create new raw DB.
232 AliRawDB *rawdb;
233 if (fWriteMode == kRFIO)
234 rawdb = new AliRawRFIODB(event, fMaxFileSize, fCompress);
235 else if (fWriteMode == kROOTD)
236 rawdb = new AliRawRootdDB(event, fMaxFileSize, fCompress);
237 else if (fWriteMode == kCASTOR)
238 rawdb = new AliRawCastorDB(event, fMaxFileSize, fCompress);
239 else if (fWriteMode == kDEVNULL)
240 rawdb = new AliRawNullDB(event, fMaxFileSize, fCompress);
241 else
242 rawdb = new AliRawDB(event, fMaxFileSize, fCompress);
243
244 if (rawdb->IsZombie()) return 1;
245 printf("Filling raw DB %s\n", rawdb->GetDBName());
246
247 // Create new tag DB.
248 AliTagDB *tagdb = 0;
249#if 0
250 // no tagdb for the time being to get maximum speed
251 if (fWriteMode == fgkDEVNULL)
252 tagdb = new AliTagNullDB(event->GetHeader(), fgkMaxTagFileSize);
253 else
254 tagdb = new AliTagDB(event->GetHeader(), fgkMaxTagFileSize);
255 if (tagdb->IsZombie())
256 tagdb = 0;
257 else
258 printf("Filling tag DB %s\n", tagdb->GetDBName());
259#endif
260
261 // Create AliStats object
262 AliStats *stats = new AliStats(rawdb->GetDBName(), fCompress, fUseFilter);
263
264 // Shortcut for easy header access
265 AliRawEventHeader &header = *event->GetHeader();
266
267 // Process input stream
268#ifdef USE_EB
269 Int_t eorFlag = 0;
270 while (!(eorFlag = ebEor())) {
271 struct iovec *ebvec;
272 if ((ebvec = ebGetNextEvent()) == (void *)-1) {
273 Error("Run", "error getting next event (%s)", ebGetLastError());
274 break;
275 }
276 if (ebvec == 0) {
277 // no event, sleep for 1 second and try again
278 gSystem->Sleep(1000);
279 continue;
280 }
281 char *ebdata = (char *) ebvec[0].iov_base;
282#else
283 while (1) {
284 char *ebdata = 0;
285#endif
286
287 // Read event header
288 if ((status = ReadHeader(header, ebdata)) != header.HeaderSize()) {
289 if (status == 0) {
290 if (fUseLoop) {
291#ifndef USE_EB
292 ::lseek(fFd, 0, SEEK_SET);
293#endif
294 continue;
295 }
296 printf("<AliMDC::Run>: EOF, processed %d events\n", fNumEvents);
297 break;
298 }
299 return 1;
300 }
301 ALIDEBUG(3)
302 header.Dump();
303
304 // If we were in looping mode stop directly after a SIGUSR1 signal
305 if (StopLoop()) {
306 Info("Run", "Stopping loop, processed %d events", fNumEvents);
307 break;
308 }
309
310 // Check if event has any hard track flagged
311 Bool_t callFilter = kFALSE;
312 // This needs to be re-engineered for the next ADC...
313 //if (fUseFilter && TEST_USER_ATTRIBUTE(header.GetTypeAttribute(), 0))
314 // callFilter = kTRUE;
315
316 // Check event type and skip "Start of Run", "End of Run",
317 // "Start of Run Files" and "End of Run Files"
318 switch (header.GetType()) {
319 case AliRawEventHeader::kStartOfRun:
320 case AliRawEventHeader::kEndOfRun:
321 case AliRawEventHeader::kStartOfRunFiles:
322 case AliRawEventHeader::kEndOfRunFiles:
323 {
324 Int_t skip = header.GetEventSize() - header.HeaderSize();
325#ifndef USE_EB
326 ::lseek(fFd, skip, SEEK_CUR);
327#endif
328 ALIDEBUG(1)
329 Info("Run", "Skipping %s (%d bytes)", header.GetTypeName(), skip);
330 continue;
331 }
332 default:
333 ALIDEBUG(1) {
334 Int_t s = header.GetEventSize() - header.HeaderSize();
335 Info("Run", "Processing %s (%d bytes)", header.GetTypeName(), s);
336 }
337 }
338
339 // Amount of data left to read for this event
340 Int_t toRead = header.GetEventSize() - header.HeaderSize();
341
342 // If there is less data for this event than the next sub-event
343 // header, something is wrong. Skip to next event...
344 if (toRead < header.HeaderSize()) {
345 ALIDEBUG(1) {
346 Warning("Run",
347 "header size (%d) exceeds number of bytes to read (%d)\n",
348 header.HeaderSize(), toRead);
349 header.Dump();
350 }
351 if ((status = DumpEvent(toRead)) != toRead) {
352 if (status == 0)
353 break;
354 return 1;
355 }
356 Error("Run", "discarding event %d (too little data for header)", fNumEvents);
357 continue;
358 }
359
360 // Loop over all sub-events... (LDCs)
361 Int_t nsub = 1;
362 while (toRead > 0) {
363#ifdef USE_EB
364 ebdata = (char *)ebvec[nsub].iov_base;
365#endif
366
367 ALIDEBUG(1)
368 Info("Run", "reading LDC %d", nsub);
369
370 AliRawEvent *subEvent = event->NextSubEvent();
371
372 // Read sub-event header
373 AliRawEventHeader &subHeader = *subEvent->GetHeader();
374 if ((status = ReadHeader(subHeader, ebdata)) != subHeader.HeaderSize()) {
375 if (status == 0) {
376 Error("Run", "unexpected EOF reading sub-event header");
377 break;
378 }
379 return 1;
380 }
381
382 ALIDEBUG(3)
383 subHeader.Dump();
384
385 toRead -= subHeader.HeaderSize();
386
387#ifdef USE_EB
388 ebdata = (char *)(ebvec[nsub].iov_base) + subHeader.HeaderSize();
389#endif
390
391 Int_t rawSize = subHeader.GetEventSize() - subHeader.HeaderSize();
392
393 // Read Equipment Header (in case of physics or calibration event)
394 if (header.GetType() == AliRawEventHeader::kPhysicsEvent ||
395 header.GetType() == AliRawEventHeader::kCalibrationEvent) {
396 AliRawEquipmentHeader &equipment = *subEvent->GetEquipmentHeader();
397 Int_t equipHeaderSize = equipment.HeaderSize();
398 if ((status = ReadEquipmentHeader(equipment, header.DataIsSwapped(),
399 ebdata)) != equipHeaderSize) {
400 if (status == 0) {
401 Error("Run", "unexpected EOF reading equipment-header");
402 break;
403 }
404 return 1;
405 }
406 toRead -= equipHeaderSize;
407 rawSize -= equipHeaderSize;
408#ifdef USE_EB
409 ebdata = (char *)(ebvec[nsub].iov_base) + subHeader.HeaderSize() +
410 equipHeaderSize;
411#endif
412 }
413
414 // Make sure raw data less than left over bytes for current event
415 if (rawSize > toRead) {
416 ALIDEBUG(1) {
417 Warning("Run", "raw data size (%d) exceeds number of bytes "
418 "to read (%d)\n", rawSize, toRead);
419 subHeader.Dump();
420 }
421 if ((status = DumpEvent(toRead)) != toRead) {
422 if (status == 0)
423 break;
424 return 1;
425 }
426 Error("Run", "discarding event %d (too much data)", fNumEvents);
427 continue;
428 }
429
430 // Read sub-event raw data
431 AliRawData &subRaw = *subEvent->GetRawData();
432 if ((status = ReadRawData(subRaw, rawSize, ebdata)) != rawSize) {
433 if (status == 0) {
434 Error("Run", "unexpected EOF reading sub-event raw data");
435 break;
436 }
437 return 1;
438 }
439
440 if (callFilter) {
441#ifdef ALI_DATE
442 if (TEST_USER_ATTRIBUTE(subHeader.GetTypeAttribute(), 0))
443 Filter(subRaw);
444 else {
445 // set size of all sectors without hard track flag to 0
446 subRaw.SetSize(0);
447 }
448#endif
449 }
450
451 toRead -= rawSize;
452 nsub++;
453 }
454
455 // Set stat info for first event of this file
456 if (rawdb->GetEvents() == 0)
457 stats->SetFirstId(header.GetRunNumber(), header.GetEventInRun());
458
459 // Store raw event in tree
460 rawdb->Fill();
461
462 // Store header in tree
463 if (tagdb) tagdb->Fill();
464
465 fNumEvents++;
466
467 if (!(fNumEvents%10))
468 printf("Processed event %d (%d)\n", fNumEvents, rawdb->GetEvents());
469
470 // Filling time statistics
471 if (rawdb->GetBytesWritten() > nextChunk) {
472 tnew = timer.RealTime();
473 stats->Fill(tnew-told);
474 told = tnew;
475 timer.Continue();
476 nextChunk += chunkSize;
477 }
478
479 // Check size of raw db. If bigger than maxFileSize, close file
480 // and continue with new file.
481 if (rawdb->FileFull()) {
482
483 printf("Written raw DB at a rate of %.1f MB/s\n",
484 rawdb->GetBytesWritten() / timer.RealTime() / 1000000.);
485
486 // Write stats object to raw db, run db, MySQL and AliEn
487 stats->WriteToDB(rawdb);
488 delete stats;
489
490 if (!rawdb->NextFile()) {
491 Error("Run", "error opening next raw data file");
492 return 1;
493 }
494
495 printf("Filling raw DB %s\n", rawdb->GetDBName());
496 stats = new AliStats(rawdb->GetDBName(), fCompress, fUseFilter);
497
498 timer.Start();
499 told = 0, tnew = 0;
500 nextChunk = chunkSize;
501 }
502
503 // Check size of tag db
504 if (tagdb && tagdb->FileFull()) {
505 if (!tagdb->NextFile())
506 tagdb = 0;
507 else
508 printf("Filling tag DB %s\n", tagdb->GetDBName());
509 }
510
511 // Make top event object ready for next event data
512 //printf("Event %d has %d sub-events\n", fNumEvents, event->GetNSubEvents());
513 event->Reset();
514
515#ifdef USE_EB
516 if (!ebReleaseEvent(ebvec)) {
517 Error("Run", "problem releasing event (%s)", ebGetLastError());
518 break;
519 }
520#endif
521 }
522
523 printf("Written raw DB at a rate of %.1f MB/s\n",
524 rawdb->GetBytesWritten() / timer.RealTime() / 1000000.);
525
526 // Write stats to raw db and run db and delete stats object
527 stats->WriteToDB(rawdb);
528 delete stats;
529
530 // Close the raw DB
531 delete rawdb;
532
533 // Close the tag DB
534 delete tagdb;
535
536 // Close input source
537 close(fFd);
538
539#if 0
540 // Cleanup fifo
541 if (fUseFifo && ::unlink(fgkFifo) == -1) {
542 SysError("Run", "unlink");
543 return 1;
544 }
545#endif
546
547#ifdef USE_EB
548 // Print eor flag
549 if (eorFlag) {
550 Info("Run", "event builder reported end of run (%d)", eorFlag);
551 }
552#endif
553
554 return 0;
555}
556
557//______________________________________________________________________________
558Int_t AliMDC::Read(void *buffer, Int_t length)
559{
560 // Read exactly length bytes into buffer. Returns number of bytes
561 // received, returns -1 in case of error and 0 for EOF.
562
563 errno = 0;
564
565 if (fFd < 0) return -1;
566
567 Int_t n, nrecv = 0;
568 char *buf = (char *)buffer;
569
570 for (n = 0; n < length; n += nrecv) {
571 if ((nrecv = read(fFd, buf+n, length-n)) <= 0) {
572 if (nrecv == 0)
573 break; // EOF
574 if (errno != EINTR)
575 SysError("Read", "read");
576 return -1;
577 }
578 }
579 return n;
580}
581
582//______________________________________________________________________________
583Int_t AliMDC::ReadHeader(AliRawEventHeader &header, void *eb)
584{
585 // Read header info from DATE data stream. Returns bytes read (i.e.
586 // AliRawEventHeader::HeaderSize()), -1 in case of error and 0 for EOF.
587
588 Int_t nrecv;
589
590 if (eb) {
591 // read from event builder memory area
592 memcpy(header.HeaderBegin(), eb, header.HeaderSize());
593 nrecv = header.HeaderSize();
594 } else {
595 // read from fifo or file
596 if ((nrecv = Read(header.HeaderBegin(), header.HeaderSize())) !=
597 header.HeaderSize()) {
598 if (nrecv == 0)
599 return 0;
600 return -1;
601 }
602 }
603
604 // Swap header data if needed
605 if (header.IsSwapped())
606 header.Swap();
607
608 // Is header valid...
609 if (!header.IsValid()) {
610 Error("ReadHeader", "invalid header format");
611 // try recovery... how?
612 return -1;
613 }
614 if (header.GetEventSize() < (UInt_t)header.HeaderSize()) {
615 Error("ReadHeader", "invalid header size");
616 // try recovery... how?
617 return -1;
618 }
619
620 return nrecv;
621}
622
623//______________________________________________________________________________
624Int_t AliMDC::ReadEquipmentHeader(AliRawEquipmentHeader &header,
625 Bool_t isSwapped, void *eb)
626{
627 // Read equipment header info from DATE data stream. Returns bytes read
628 // (i.e. AliRawEquipmentHeader::HeaderSize()), -1 in case of error and
629 // 0 for EOF. If isSwapped is kTRUE the event data is byte swapped
630 // and we will swap the header to host format.
631
632 Int_t nrecv;
633
634 if (eb) {
635 // read from event builder memory area
636 memcpy(header.HeaderBegin(), eb, header.HeaderSize());
637 nrecv = header.HeaderSize();
638 } else {
639 // read from fifo or file
640 if ((nrecv = Read(header.HeaderBegin(), header.HeaderSize())) !=
641 header.HeaderSize()) {
642 if (nrecv == 0)
643 return 0;
644 return -1;
645 }
646 }
647
648 // Swap equipment header data if needed
649 if (isSwapped)
650 header.Swap();
651
652 if (header.GetEquipmentSize() < (UInt_t)header.HeaderSize()) {
653 Error("ReadEquipmentHeader", "invalid equipment header size");
654 // try recovery... how?
655 return -1;
656 }
657
658 return nrecv;
659}
660
661//______________________________________________________________________________
662Int_t AliMDC::ReadRawData(AliRawData &raw, Int_t size, void *eb)
663{
664 // Read raw data from DATE data stream. Returns bytes read (i.e.
665 // AliRawEventHeader::HeaderSize()), -1 in case of error and 0 for EOF.
666
667 Int_t nrecv;
668
669 if (eb) {
670 // read from event builder memory area
671 raw.SetBuffer(eb, size);
672 nrecv = size;
673 } else {
674 // read from fifo or file
675 raw.SetSize(size);
676 if ((nrecv = Read(raw.GetBuffer(), size)) != size) {
677 if (nrecv == 0) {
678 Error("ReadRawData", "unexpected EOF");
679 return 0;
680 }
681 return -1;
682 }
683 }
684
685 return nrecv;
686}
687
688//______________________________________________________________________________
689Int_t AliMDC::DumpEvent(Int_t toRead)
690{
691 // This case should not happen, but if it does try to handle it
692 // gracefully by reading the rest of the event and discarding it.
693 // Returns bytes read, -1 in case of fatal error and 0 for EOF.
694
695 Error("DumpEvent", "dumping %d bytes of event %d", toRead, fNumEvents);
696
697 Int_t nrecv;
698 char *tbuf = new char[toRead];
699 if ((nrecv = Read(tbuf, toRead)) != toRead) {
700 if (nrecv == 0) {
701 Error("DumpEvent", "unexpected EOF");
702 return 0;
703 }
704 return -1;
705 }
706 delete [] tbuf;
707
708 return nrecv;
709}
710
711//______________________________________________________________________________
712Int_t AliMDC::Filter(AliRawData &raw)
713{
714 // Call 3rd level filter for this raw data segment.
715
716#ifdef USE_HLT
717
718 // Add HLT code here
719
720#else
721
722 raw.GetSize();
723 printf("Filter called for event %d\n", fNumEvents);
724
725#endif
726
727 return 0;
728}
729
730//______________________________________________________________________________
731AliMDC::AliMDCInterruptHandler::AliMDCInterruptHandler(const
732 AliMDCInterruptHandler&
733 handler):
734 TSignalHandler(handler)
735{
736// copy constructor
737
738 Fatal("AliMDCInterruptHandler", "copy constructor not implemented");
739}
740
741//______________________________________________________________________________
742AliMDC::AliMDCInterruptHandler&
743 AliMDC::AliMDCInterruptHandler::operator = (const AliMDCInterruptHandler&
744 /*handler*/)
745{
746// assignment operator
747
748 Fatal("operator =", "assignment operator not implemented");
749 return *this;
750}