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3f2a1b1c | 1 | // $Id$ |
2 | ||
c5123824 | 3 | //************************************************************************** |
4 | //* This file is property of and copyright by the ALICE HLT Project * | |
5 | //* ALICE Experiment at CERN, All rights reserved. * | |
6 | //* * | |
7 | //* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> * | |
8 | //* for The ALICE HLT Project. * | |
9 | //* * | |
10 | //* Permission to use, copy, modify and distribute this software and its * | |
11 | //* documentation strictly for non-commercial purposes is hereby granted * | |
12 | //* without fee, provided that the above copyright notice appears in all * | |
13 | //* copies and that both the copyright notice and this permission notice * | |
14 | //* appear in the supporting documentation. The authors make no claims * | |
15 | //* about the suitability of this software for any purpose. It is * | |
16 | //* provided "as is" without express or implied warranty. * | |
17 | //************************************************************************** | |
3f2a1b1c | 18 | |
b22e91eb | 19 | /** @file AliHLTDataBuffer.cxx |
20 | @author Matthias Richter | |
21 | @date | |
22 | @brief Handling of Data Buffers for HLT components. | |
23 | */ | |
3f2a1b1c | 24 | |
0c0c9d99 | 25 | #if __GNUC__>= 3 |
3f2a1b1c | 26 | using namespace std; |
27 | #endif | |
28 | ||
29 | #include "AliHLTDataBuffer.h" | |
6235cd38 | 30 | #include "AliHLTConsumerDescriptor.h" |
b22e91eb | 31 | #include "AliHLTComponent.h" |
b46ca65e | 32 | #include "AliHLTTask.h" |
66043029 | 33 | #include <cerrno> |
d6cbe999 | 34 | #include <cassert> |
66043029 | 35 | //#include <string> |
36 | //#include "AliHLTSystem.h" | |
3f2a1b1c | 37 | |
2be3f004 | 38 | typedef vector<AliHLTDataBuffer::AliHLTDataSegment> AliHLTDataSegmentList; |
39 | typedef vector<AliHLTDataBuffer::AliHLTRawBuffer*> AliHLTRawBufferPList; | |
40 | ||
b22e91eb | 41 | /** ROOT macro for the implementation of ROOT specific class methods */ |
3f2a1b1c | 42 | ClassImp(AliHLTDataBuffer) |
43 | ||
3f2a1b1c | 44 | AliHLTDataBuffer::AliHLTDataBuffer() |
85869391 | 45 | : |
46 | fSegments(), | |
47 | fConsumers(), | |
48 | fActiveConsumers(), | |
49 | fReleasedConsumers(), | |
50 | fpBuffer(NULL), | |
b46ca65e | 51 | fFlags(0), |
52 | fForwardedSegmentSources(), | |
53 | fForwardedSegments() | |
3f2a1b1c | 54 | { |
70ed7d01 | 55 | // see header file for class documentation |
56 | // or | |
57 | // refer to README to build package | |
58 | // or | |
59 | // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt | |
85869391 | 60 | fSegments.empty(); |
61 | fConsumers.empty(); | |
62 | fActiveConsumers.empty(); | |
63 | fReleasedConsumers.empty(); | |
70ed7d01 | 64 | fgNofInstances++; |
3f2a1b1c | 65 | } |
66 | ||
70ed7d01 | 67 | int AliHLTDataBuffer::fgNofInstances=0; |
2be3f004 | 68 | AliHLTRawBufferPList AliHLTDataBuffer::fgFreeBuffers; |
69 | AliHLTRawBufferPList AliHLTDataBuffer::fgActiveBuffers; | |
70ed7d01 | 70 | AliHLTUInt32_t AliHLTDataBuffer::fgMargin=1024; |
b22e91eb | 71 | AliHLTLogging AliHLTDataBuffer::fgLogging; |
8451168b | 72 | const Int_t AliHLTDataBuffer::fgkSafetyPatternSize=16; |
73 | const char AliHLTDataBuffer::fgkSafetyPattern[]={0x28, 0x63, 0x29, 0x4d, 0x52, 0x49, 0x43, 0x48, 0x54, 0x45, 0x52, 0x20, 0x32, 0x30, 0x30, 0x37}; | |
0a7afbf0 | 74 | AliHLTUInt32_t AliHLTDataBuffer::fgEventCount=0; |
b22e91eb | 75 | |
3f2a1b1c | 76 | AliHLTDataBuffer::~AliHLTDataBuffer() |
77 | { | |
70ed7d01 | 78 | // see header file for function documentation |
79 | if (--fgNofInstances<=0) { | |
3f2a1b1c | 80 | DeleteRawBuffers(); |
81 | } | |
82 | CleanupConsumerList(); | |
83 | } | |
84 | ||
0c0c9d99 | 85 | int AliHLTDataBuffer::SetConsumer(AliHLTComponent* pConsumer) |
3f2a1b1c | 86 | { |
70ed7d01 | 87 | // see header file for function documentation |
3f2a1b1c | 88 | int iResult=0; |
89 | if (pConsumer) { | |
9ce4bf4a | 90 | if (FindConsumer(pConsumer)) { |
91 | HLTWarning("consumer %s (%p) already set to data buffer %p", pConsumer->GetComponentID(), pConsumer, this); | |
92 | } | |
0c0c9d99 | 93 | AliHLTConsumerDescriptor* pDesc=new AliHLTConsumerDescriptor(pConsumer); |
3f2a1b1c | 94 | if (pDesc) { |
95 | fConsumers.push_back(pDesc); | |
9ce4bf4a | 96 | HLTDebug("set consumer %s (%p) to data buffer %p", pConsumer->GetComponentID(), pConsumer, this); |
3f2a1b1c | 97 | } else { |
98 | HLTError("memory allocation failed"); | |
99 | iResult=-ENOMEM; | |
100 | } | |
101 | } else { | |
9ce4bf4a | 102 | HLTError("invalid parameter: consumer component (nil)"); |
3f2a1b1c | 103 | iResult=-EINVAL; |
104 | } | |
105 | return iResult; | |
106 | } | |
107 | ||
2be3f004 | 108 | int AliHLTDataBuffer::FindMatchingDataBlocks(const AliHLTComponent* pConsumer, AliHLTComponentDataTypeList* tgtList) |
0c0c9d99 | 109 | { |
70ed7d01 | 110 | // see header file for function documentation |
0c0c9d99 | 111 | int iResult=0; |
112 | if (pConsumer) { | |
2be3f004 | 113 | AliHLTDataSegmentList segments; |
0c0c9d99 | 114 | if ((iResult=FindMatchingDataSegments(pConsumer, segments))>=0) { |
115 | if (tgtList) { | |
2be3f004 | 116 | AliHLTDataSegmentList::iterator segment=segments.begin(); |
0c0c9d99 | 117 | while (segment!=segments.end()) { |
118 | tgtList->push_back((*segment).fDataType); | |
119 | segment++; | |
120 | } | |
121 | } | |
122 | iResult=segments.size(); | |
123 | } | |
124 | } else { | |
125 | iResult=-EINVAL; | |
126 | } | |
127 | return iResult; | |
128 | } | |
129 | ||
6235cd38 | 130 | int AliHLTDataBuffer::FindMatchingDataSegments(const AliHLTComponent* pConsumer, vector<AliHLTDataBuffer::AliHLTDataSegment>& tgtList) |
0c0c9d99 | 131 | { |
70ed7d01 | 132 | // see header file for function documentation |
0c0c9d99 | 133 | int iResult=0; |
9b7fe12d | 134 | |
135 | // Matthias 26.09.2007 relax the restriction to matching data blocks | |
136 | // all blocks are passed to the consumer, which is the policy also in | |
137 | // PubSub | |
138 | tgtList.assign(fSegments.begin(), fSegments.end()); | |
b46ca65e | 139 | |
140 | // add all forwarded blocks | |
141 | tgtList.insert(tgtList.begin(), fForwardedSegments.begin(), fForwardedSegments.end()); | |
9b7fe12d | 142 | iResult=tgtList.size(); |
143 | return iResult; | |
144 | ||
0c0c9d99 | 145 | if (pConsumer) { |
2be3f004 | 146 | AliHLTComponentDataTypeList dtlist; |
0c0c9d99 | 147 | ((AliHLTComponent*)pConsumer)->GetInputDataTypes(dtlist); |
2be3f004 | 148 | AliHLTDataSegmentList::iterator segment=fSegments.begin(); |
0c0c9d99 | 149 | while (segment!=fSegments.end()) { |
2be3f004 | 150 | AliHLTComponentDataTypeList::iterator type=dtlist.begin(); |
0c0c9d99 | 151 | while (type!=dtlist.end()) { |
d8f5c9fe | 152 | if ((*segment).fDataType==(*type)) { |
0c0c9d99 | 153 | tgtList.push_back(*segment); |
154 | iResult++; | |
155 | break; | |
156 | } | |
157 | type++; | |
158 | } | |
159 | segment++; | |
160 | } | |
161 | } else { | |
162 | iResult=-EINVAL; | |
163 | } | |
164 | return iResult; | |
165 | } | |
166 | ||
457ec821 | 167 | int AliHLTDataBuffer::Subscribe(const AliHLTComponent* pConsumer, AliHLTComponentBlockDataList& blockDescList) |
3f2a1b1c | 168 | { |
70ed7d01 | 169 | // see header file for function documentation |
3f2a1b1c | 170 | int iResult=0; |
457ec821 | 171 | if (pConsumer) { |
b46ca65e | 172 | if (1/*fpBuffer*/) { |
0c0c9d99 | 173 | AliHLTConsumerDescriptor* pDesc=FindConsumer(pConsumer, fConsumers); |
3f2a1b1c | 174 | if (pDesc) { |
2be3f004 | 175 | AliHLTDataSegmentList tgtList; |
9b7fe12d | 176 | // Matthias 26.07.2007 AliHLTSystem should behave the same way as PubSub |
177 | // so it does not matter if there are matching data types or not, unless | |
178 | // we implement such a check in PubSub | |
179 | if ((iResult=FindMatchingDataSegments(pConsumer, tgtList))>=0) { | |
2be3f004 | 180 | AliHLTDataSegmentList::iterator segment=tgtList.begin(); |
457ec821 | 181 | while (segment!=tgtList.end()) { |
3f2a1b1c | 182 | // fill the block data descriptor |
457ec821 | 183 | AliHLTComponentBlockData bd; |
184 | AliHLTComponent::FillBlockData(bd); | |
3294f81a | 185 | // This models the behavior of PubSub. |
186 | // For incoming data blocks, fOffset must be ignored by the | |
187 | // processing component. It is set for bookkeeping in the framework. | |
188 | // fPtr always points to the beginning of the data. | |
457ec821 | 189 | bd.fOffset=0; |
b46ca65e | 190 | AliHLTUInt8_t* pTgt=*segment; |
457ec821 | 191 | bd.fPtr=reinterpret_cast<void*>(pTgt); |
192 | bd.fSize=(*segment).fSegmentSize; | |
193 | bd.fDataType=(*segment).fDataType; | |
194 | bd.fSpecification=(*segment).fSpecification; | |
195 | blockDescList.push_back(bd); | |
b46ca65e | 196 | pDesc->SetActiveDataSegment(*segment); |
457ec821 | 197 | HLTDebug("component %p (%s) subscribed to segment offset %d size %d data type %s %#x", |
198 | pConsumer, ((AliHLTComponent*)pConsumer)->GetComponentID(), bd.fOffset, | |
199 | bd.fSize, (AliHLTComponent::DataType2Text(bd.fDataType)).c_str(), | |
200 | bd.fSpecification); | |
0c0c9d99 | 201 | segment++; |
202 | } | |
203 | // move this consumer to the active list | |
457ec821 | 204 | if (tgtList.size()==0) { |
b46ca65e | 205 | ChangeConsumerState(pDesc, fConsumers, fReleasedConsumers); |
206 | HLTDebug("no input data for component %p (%s) available", pConsumer, ((AliHLTComponent*)pConsumer)->GetComponentID()); | |
207 | } else if (ChangeConsumerState(pDesc, fConsumers, fActiveConsumers)>=0) { | |
0c0c9d99 | 208 | HLTDebug("component %p (%s) subscribed to data buffer %p", pConsumer, ((AliHLTComponent*)pConsumer)->GetComponentID(), this); |
3f2a1b1c | 209 | } else { |
0c0c9d99 | 210 | // TODO: cleanup the consumer descriptor correctly |
457ec821 | 211 | segment=tgtList.begin(); |
212 | while (segment!=tgtList.end()) { | |
213 | blockDescList.pop_back(); | |
214 | segment++; | |
215 | } | |
3f2a1b1c | 216 | HLTError("can not activate consumer %p for data buffer %p", pConsumer, this); |
217 | iResult=-EACCES; | |
218 | } | |
219 | } else { | |
0c0c9d99 | 220 | HLTError("unresolved data segment(s) for component %p (%s)", pConsumer, ((AliHLTComponent*)pConsumer)->GetComponentID()); |
3f2a1b1c | 221 | iResult=-EBADF; |
222 | } | |
223 | } else { | |
d4a18597 | 224 | if (!FindConsumer(pConsumer)) { |
225 | HLTError("component %p is not a data consumer of data buffer %p", pConsumer, this); | |
226 | } else { | |
227 | HLTError("component %p is a valid data consumer of data buffer %p, but did not release it's buffer subscription", pConsumer, this); | |
228 | } | |
3f2a1b1c | 229 | iResult=-ENOENT; |
230 | } | |
231 | } else { | |
9b7fe12d | 232 | // Matthias 26.07.2007 until now, data had to be present for successful subscription |
233 | // in order to be consistent with the PubSub framework, this restiction has been | |
234 | // removed | |
235 | //HLTError("data buffer %p is empty", this); | |
236 | //iResult=-ENODATA; | |
3f2a1b1c | 237 | } |
238 | } else { | |
239 | HLTError("invalid parameter"); | |
240 | iResult=-EINVAL; | |
241 | } | |
242 | return iResult; | |
243 | } | |
244 | ||
b46ca65e | 245 | int AliHLTDataBuffer::Release(AliHLTComponentBlockData* pBlockDesc, |
246 | const AliHLTComponent* pConsumer, | |
247 | const AliHLTTask* pOwnerTask) | |
3f2a1b1c | 248 | { |
70ed7d01 | 249 | // see header file for function documentation |
3f2a1b1c | 250 | int iResult=0; |
251 | if (pBlockDesc && pConsumer) { | |
0c0c9d99 | 252 | AliHLTConsumerDescriptor* pDesc=FindConsumer(pConsumer, fActiveConsumers); |
253 | if (pDesc) { | |
b46ca65e | 254 | if ((iResult=pDesc->CheckActiveDataSegment(AliHLTDataSegment(pBlockDesc->fPtr, pBlockDesc->fOffset, pBlockDesc->fSize)))!=1) { |
c5123824 | 255 | HLTWarning("data segment mismatch, component %p has not subscribed to a segment with offset %#x and size %d", pConsumer, pBlockDesc->fOffset, pBlockDesc->fSize); |
0c0c9d99 | 256 | // TODO: appropriate error handling, but so far optional |
257 | iResult=0; | |
258 | } else { | |
b46ca65e | 259 | pDesc->ReleaseActiveDataSegment(AliHLTDataSegment(pBlockDesc->fPtr, pBlockDesc->fOffset, pBlockDesc->fSize)); |
260 | } | |
261 | if (GetNofPendingConsumers()==0 && fForwardedSegments.size()>0) { | |
262 | // last consumer, release forwarded segments | |
d4a18597 | 263 | ReleaseForwardedBlock(pBlockDesc, pOwnerTask); |
264 | } | |
265 | pBlockDesc->fOffset=0; | |
266 | pBlockDesc->fPtr=NULL; | |
267 | pBlockDesc->fSize=0; | |
268 | if (pDesc->GetNofActiveSegments()==0) { | |
269 | if ((iResult=ChangeConsumerState(pDesc, fActiveConsumers, fReleasedConsumers))>=0) { | |
270 | if (GetNofActiveConsumers()==0 && GetNofPendingConsumers()==0) { | |
271 | // this is the last consumer, reset the consumer list and release the raw buffer | |
272 | ResetDataBuffer(); | |
273 | } | |
274 | } else { | |
275 | HLTError("can not deactivate consumer %p for data buffer %p", pConsumer, this); | |
276 | iResult=-EACCES; | |
277 | } | |
278 | } | |
279 | } else { | |
280 | HLTWarning("component %p has currently not subscribed to the data buffer %p", pConsumer, this); | |
281 | iResult=-ENOENT; | |
282 | } | |
283 | } else { | |
284 | HLTError("inavalid parameter: pBlockDesc=%p pConsumer=%p", pBlockDesc, pConsumer); | |
285 | iResult=-EINVAL; | |
286 | } | |
287 | return iResult; | |
288 | } | |
289 | ||
290 | int AliHLTDataBuffer::ReleaseForwardedBlock(AliHLTComponentBlockData* pBlockDesc, | |
291 | const AliHLTTask* pOwnerTask) | |
292 | { | |
293 | // see header file for function documentation | |
294 | int iResult=0; | |
295 | if (pBlockDesc && pOwnerTask) { | |
b46ca65e | 296 | assert(fForwardedSegments.size()==fForwardedSegmentSources.size()); |
297 | AliHLTDataSegmentList::iterator segment=fForwardedSegments.begin(); | |
298 | AliHLTTaskPList::iterator src=fForwardedSegmentSources.begin(); | |
299 | //HLTDebug("%p checking forwarded segments", this); | |
300 | for (; segment!=fForwardedSegments.end(); segment++, src++) { | |
301 | //HLTDebug("segment ptr=%p offset=%d size=%d\n" | |
302 | // "block ptr=%p offset=%d size=%d", (*segment).fPtr, (*segment).fSegmentOffset, (*segment).fSegmentSize, pBlockDesc->fPtr, pBlockDesc->fOffset, pBlockDesc->fSize); | |
303 | if ((*segment)==AliHLTDataSegment(pBlockDesc->fPtr, pBlockDesc->fOffset, pBlockDesc->fSize)) { | |
304 | //HLTDebug("release segment of task %p", *src); | |
305 | assert((*src)!=NULL); | |
306 | if ((*src)!=NULL) { | |
307 | if ((*src)->Release(pBlockDesc, pOwnerTask)>=0) { | |
308 | HLTDebug("task %s (%p) released forwarded segment %p size %d of task %s (%p)", | |
309 | pOwnerTask->GetName(), pOwnerTask, (*segment).GetPtr(), (*segment).GetSize(), | |
310 | (*src)->GetName(), *src); | |
311 | } else { | |
312 | HLTError("task %s (%p) failed releasing forwarded segment %p size %d of task %s (%p)", | |
313 | pOwnerTask->GetName(), pOwnerTask, (*segment).GetPtr(), (*segment).GetSize(), | |
314 | (*src)->GetName(), *src); | |
315 | } | |
316 | } | |
317 | fForwardedSegments.erase(segment); | |
318 | fForwardedSegmentSources.erase(src); | |
319 | break; | |
320 | } | |
321 | } | |
3f2a1b1c | 322 | } else { |
d4a18597 | 323 | HLTError("inavalid parameter: pBlockDesc=%p pOwnerTask=%p", pBlockDesc, pOwnerTask); |
3f2a1b1c | 324 | iResult=-EINVAL; |
325 | } | |
326 | return iResult; | |
327 | } | |
328 | ||
b46ca65e | 329 | int AliHLTDataBuffer::Forward(AliHLTTask* pSrcTask, AliHLTComponentBlockData* pBlockDesc) |
330 | { | |
331 | // see header file for function documentation | |
332 | if (pSrcTask==NULL || pBlockDesc==NULL) return -EINVAL; | |
333 | assert(fForwardedSegments.size()==fForwardedSegmentSources.size()); | |
334 | if (fForwardedSegments.size()!=fForwardedSegmentSources.size()) return -EFAULT; | |
335 | fForwardedSegmentSources.push_back(pSrcTask); | |
457ec821 | 336 | fForwardedSegments.push_back(AliHLTDataSegment(pBlockDesc->fPtr, pBlockDesc->fOffset, pBlockDesc->fSize, pBlockDesc->fDataType, pBlockDesc->fSpecification)); |
b46ca65e | 337 | return 0; |
338 | } | |
339 | ||
3f2a1b1c | 340 | AliHLTUInt8_t* AliHLTDataBuffer::GetTargetBuffer(int iMinSize) |
341 | { | |
70ed7d01 | 342 | // see header file for function documentation |
3f2a1b1c | 343 | AliHLTUInt8_t* pTargetBuffer=NULL; |
b6800be0 | 344 | if (fpBuffer!=NULL) { |
345 | HLTWarning("data buffer not properly reset, possible memory leak\n"); | |
346 | } | |
3f2a1b1c | 347 | fpBuffer=CreateRawBuffer(iMinSize); |
9ce4bf4a | 348 | if (fpBuffer) { |
1e6e67ec | 349 | pTargetBuffer=*fpBuffer; |
9ce4bf4a | 350 | } else { |
351 | HLTError("can not create raw buffer"); | |
352 | } | |
3f2a1b1c | 353 | return pTargetBuffer; |
354 | } | |
355 | ||
8ede8717 | 356 | int AliHLTDataBuffer::SetSegments(AliHLTUInt8_t* pTgt, AliHLTComponentBlockData* arrayBlockData, int iSize) |
3f2a1b1c | 357 | { |
70ed7d01 | 358 | // see header file for function documentation |
3f2a1b1c | 359 | int iResult=0; |
360 | if (pTgt && arrayBlockData && iSize>=0) { | |
0c0c9d99 | 361 | if (fpBuffer) { |
1e6e67ec | 362 | if (*fpBuffer==pTgt) { |
6235cd38 | 363 | AliHLTDataBuffer::AliHLTDataSegment segment; |
0c0c9d99 | 364 | for (int i=0; i<iSize; i++) { |
3294f81a | 365 | // This function has to model the behavior of PubSub |
366 | // For output blocks only the fOffset value is used, this must be the offset | |
367 | // relative to the output pointer. fPtr must be either NULL or the output | |
b46ca65e | 368 | // pointer. In either case it is 'ignored' and set to the beginning of the |
369 | // data buffer | |
6434d28a | 370 | if (arrayBlockData[i].fPtr==NULL || |
3294f81a | 371 | arrayBlockData[i].fPtr==*fpBuffer) { |
b46ca65e | 372 | arrayBlockData[i].fPtr=*fpBuffer; |
0ad4ebd1 | 373 | if ((arrayBlockData[i].fOffset+arrayBlockData[i].fSize<=fpBuffer->GetUsedSize()) || |
374 | ((arrayBlockData[i].fOffset==~(AliHLTUInt32_t)0) && arrayBlockData[i].fSize==0)) { | |
3294f81a | 375 | segment.fSegmentOffset=arrayBlockData[i].fOffset; |
b46ca65e | 376 | segment.fPtr=(AliHLTUInt8_t*)arrayBlockData[i].fPtr; |
1e6e67ec | 377 | segment.fSegmentSize=arrayBlockData[i].fSize; |
378 | segment.fDataType=arrayBlockData[i].fDataType; | |
379 | segment.fSpecification=arrayBlockData[i].fSpecification; | |
380 | fSegments.push_back(segment); | |
381 | HLTDebug("set segment %s with size %d at offset %d", AliHLTComponent::DataType2Text(segment.fDataType).data(), segment.fSegmentSize, segment.fSegmentOffset); | |
382 | } else { | |
383 | HLTError("block data specification %#d (%s) exceeds size of data buffer", i, AliHLTComponent::DataType2Text(arrayBlockData[i].fDataType).data()); | |
c0a2bfc2 | 384 | HLTError("block offset=%d, block size=%d, buffer size=%d", arrayBlockData[i].fOffset, arrayBlockData[i].fSize, fpBuffer->GetUsedSize()); |
1e6e67ec | 385 | iResult=-E2BIG; |
386 | } | |
0c0c9d99 | 387 | } else { |
3294f81a | 388 | HLTError("invalid pointer (%p) in block data specification (buffer %p size %d)." |
389 | "please note: for output blocks only the fOffset value is valid and must " | |
c0a2bfc2 | 390 | "be relative to the output buffer", arrayBlockData[i].fPtr, fpBuffer->GetPointer(), fpBuffer->GetUsedSize()); |
1e6e67ec | 391 | iResult=-ERANGE; |
0c0c9d99 | 392 | } |
393 | } | |
3f2a1b1c | 394 | } else { |
c0a2bfc2 | 395 | HLTError("this data buffer (%p) does not match the internal data buffer %p of raw buffer %p", pTgt, fpBuffer->GetPointer(), fpBuffer); |
8451168b | 396 | iResult=-EINVAL; |
3f2a1b1c | 397 | } |
0c0c9d99 | 398 | } else { |
c5123824 | 399 | HLTFatal("internal data structur mismatch"); |
0c0c9d99 | 400 | iResult=-EFAULT; |
3f2a1b1c | 401 | } |
402 | } else { | |
0c0c9d99 | 403 | HLTError("invalid parameter: pTgtBuffer=%p arrayBlockData=%p", pTgt, arrayBlockData); |
3f2a1b1c | 404 | iResult=-EINVAL; |
405 | } | |
406 | return iResult; | |
407 | } | |
408 | ||
409 | int AliHLTDataBuffer::IsEmpty() | |
410 | { | |
70ed7d01 | 411 | // see header file for function documentation |
d4a18597 | 412 | int iResult=(fpBuffer==NULL && fForwardedSegments.size()==0) || GetNofSegments()==0; |
3f2a1b1c | 413 | return iResult; |
414 | } | |
415 | ||
416 | int AliHLTDataBuffer::GetNofSegments() | |
417 | { | |
70ed7d01 | 418 | // see header file for function documentation |
d4a18597 | 419 | int iResult=fSegments.size() + fForwardedSegments.size(); |
3f2a1b1c | 420 | return iResult; |
421 | } | |
422 | ||
423 | int AliHLTDataBuffer::GetNofConsumers() | |
424 | { | |
70ed7d01 | 425 | // see header file for function documentation |
3f2a1b1c | 426 | int iResult=fConsumers.size() + GetNofActiveConsumers() + fReleasedConsumers.size(); |
427 | return iResult; | |
428 | } | |
429 | ||
b426991e | 430 | int AliHLTDataBuffer::GetNofPendingConsumers() |
431 | { | |
432 | // see header file for function documentation | |
433 | int iResult=fConsumers.size(); | |
434 | return iResult; | |
435 | } | |
436 | ||
3f2a1b1c | 437 | int AliHLTDataBuffer::GetNofActiveConsumers() |
438 | { | |
70ed7d01 | 439 | // see header file for function documentation |
3f2a1b1c | 440 | int iResult=fActiveConsumers.size(); |
441 | return iResult; | |
442 | } | |
443 | ||
6235cd38 | 444 | AliHLTDataBuffer::AliHLTRawBuffer* AliHLTDataBuffer::CreateRawBuffer(AliHLTUInt32_t size) |
3f2a1b1c | 445 | { |
70ed7d01 | 446 | // see header file for function documentation |
3f2a1b1c | 447 | AliHLTRawBuffer* pRawBuffer=NULL; |
7a5ccd96 | 448 | unsigned int reqSize=size+fgkSafetyPatternSize; |
2be3f004 | 449 | AliHLTRawBufferPList::iterator buffer=fgFreeBuffers.begin(); |
70ed7d01 | 450 | while (buffer!=fgFreeBuffers.end() && pRawBuffer==NULL) { |
d6cbe999 | 451 | if ((*buffer)->CheckSize(reqSize)) { |
3f2a1b1c | 452 | // assign this element |
453 | pRawBuffer=*buffer; | |
d6cbe999 | 454 | pRawBuffer->UseBuffer(size); |
70ed7d01 | 455 | fgFreeBuffers.erase(buffer); |
c0a2bfc2 | 456 | fgLogging.Logging(kHLTLogDebug, "AliHLTDataBuffer::CreateRawBuffer", "data buffer handling", "raw buffer container %p provided for request of %d bytes (total %d available in buffer %p)", pRawBuffer, size, pRawBuffer->GetTotalSize(), pRawBuffer->GetPointer()); |
70ed7d01 | 457 | fgActiveBuffers.push_back(pRawBuffer); |
0c0c9d99 | 458 | break; |
3f2a1b1c | 459 | } |
0c0c9d99 | 460 | buffer++; |
3f2a1b1c | 461 | } |
462 | if (pRawBuffer==NULL) { | |
0c0c9d99 | 463 | // no buffer found, create a new one |
d6cbe999 | 464 | pRawBuffer=new AliHLTRawBuffer(reqSize); |
3f2a1b1c | 465 | if (pRawBuffer) { |
c0a2bfc2 | 466 | if (pRawBuffer->GetPointer()) { |
d6cbe999 | 467 | pRawBuffer->UseBuffer(size); |
70ed7d01 | 468 | fgActiveBuffers.push_back(pRawBuffer); |
c0a2bfc2 | 469 | fgLogging.Logging(kHLTLogDebug, "AliHLTDataBuffer::CreateRawBuffer", "data buffer handling", "new raw buffer %p of size %d created (container %p)", pRawBuffer->GetPointer(), pRawBuffer->GetTotalSize(), pRawBuffer); |
3f2a1b1c | 470 | } else { |
471 | delete pRawBuffer; | |
472 | pRawBuffer=NULL; | |
0c0c9d99 | 473 | fgLogging.Logging(kHLTLogError, "AliHLTDataBuffer::CreateRawBuffer", "data buffer handling", "memory allocation failed"); |
3f2a1b1c | 474 | } |
475 | } else { | |
0c0c9d99 | 476 | fgLogging.Logging(kHLTLogError, "AliHLTDataBuffer::CreateRawBuffer", "data buffer handling", "memory allocation failed"); |
3f2a1b1c | 477 | } |
478 | } | |
73ede1d3 | 479 | if (pRawBuffer!=NULL && fgkSafetyPatternSize>0) { |
c0a2bfc2 | 480 | //fgLogging.Logging(kHLTLogDebug, "AliHLTDataBuffer::CreateRawBuffer", "data buffer handling", "writing safety pattern to %p offset %d", (*buffer)->GetPointer(), (*buffer)->GetUsedSize()); |
49b01d04 | 481 | pRawBuffer->WritePattern(fgkSafetyPattern, fgkSafetyPatternSize); |
73ede1d3 | 482 | } |
3f2a1b1c | 483 | return pRawBuffer; |
484 | } | |
485 | ||
486 | int AliHLTDataBuffer::ReleaseRawBuffer(AliHLTRawBuffer* pBuffer) | |
487 | { | |
70ed7d01 | 488 | // see header file for function documentation |
3f2a1b1c | 489 | int iResult=0; |
490 | if (pBuffer) { | |
2be3f004 | 491 | AliHLTRawBufferPList::iterator buffer=fgActiveBuffers.begin(); |
70ed7d01 | 492 | while (buffer!=fgActiveBuffers.end() && (*buffer)!=pBuffer) { |
3f2a1b1c | 493 | buffer++; |
494 | } | |
70ed7d01 | 495 | if (buffer!=fgActiveBuffers.end()) { |
8451168b | 496 | if (fgkSafetyPatternSize>0) { |
c0a2bfc2 | 497 | //fgLogging.Logging(kHLTLogDebug, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "comparing safety pattern at %p offset %d", (*buffer)->GetPointer(), reinterpret_cast<AliHLTUInt32_t>(*buffer)); |
d6cbe999 | 498 | if ((*buffer)->CheckPattern(fgkSafetyPattern, fgkSafetyPatternSize)) { |
c0a2bfc2 | 499 | fgLogging.Logging(kHLTLogFatal, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "component has written beyond end of data buffer %p size %d", (*buffer)->GetPointer(), (*buffer)->GetUsedSize()); |
8451168b | 500 | } |
501 | } | |
d6cbe999 | 502 | (*buffer)->Reset(); |
70ed7d01 | 503 | fgFreeBuffers.push_back(*buffer); |
504 | fgActiveBuffers.erase(buffer); | |
3f2a1b1c | 505 | } else { |
0c0c9d99 | 506 | fgLogging.Logging(kHLTLogWarning, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "can not find raw buffer container %p in the list of active containers", pBuffer); |
3f2a1b1c | 507 | iResult=-ENOENT; |
508 | } | |
509 | } else { | |
0c0c9d99 | 510 | fgLogging.Logging(kHLTLogError, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "invalid parameter"); |
3f2a1b1c | 511 | iResult=-EINVAL; |
512 | } | |
513 | return iResult; | |
514 | } | |
515 | ||
516 | ||
517 | int AliHLTDataBuffer::DeleteRawBuffers() | |
518 | { | |
70ed7d01 | 519 | // see header file for function documentation |
3f2a1b1c | 520 | int iResult=0; |
950a0e40 | 521 | #ifdef ALIHLTSYSTEM_PROFILING |
522 | int iTotalSize=0; | |
523 | int iCount=fgFreeBuffers.size()+fgActiveBuffers.size(); | |
524 | #endif //ALIHLTSYSTEM_PROFILING | |
dba03d72 | 525 | AliHLTRawBufferPList::iterator buffer;; |
526 | while ((buffer=fgFreeBuffers.begin())!=fgFreeBuffers.end()) { | |
950a0e40 | 527 | #ifdef ALIHLTSYSTEM_PROFILING |
528 | iTotalSize+=(*buffer)->GetTotalSize(); | |
529 | #endif //ALIHLTSYSTEM_PROFILING | |
3f2a1b1c | 530 | delete *buffer; |
70ed7d01 | 531 | fgFreeBuffers.erase(buffer); |
3f2a1b1c | 532 | } |
dba03d72 | 533 | while ((buffer=fgActiveBuffers.begin())!=fgActiveBuffers.end()) { |
950a0e40 | 534 | #ifdef ALIHLTSYSTEM_PROFILING |
535 | iTotalSize+=(*buffer)->GetTotalSize(); | |
536 | #endif //ALIHLTSYSTEM_PROFILING | |
c0a2bfc2 | 537 | fgLogging.Logging(kHLTLogWarning, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "request to delete active raw buffer container (raw buffer %p, size %d)", (*buffer)->GetPointer(), (*buffer)->GetTotalSize()); |
3f2a1b1c | 538 | delete *buffer; |
70ed7d01 | 539 | fgActiveBuffers.erase(buffer); |
3f2a1b1c | 540 | } |
950a0e40 | 541 | #ifdef ALIHLTSYSTEM_PROFILING |
542 | fgLogging.Logging(kHLTLogImportant, "AliHLTDataBuffer::ReleaseRawBuffer", "data buffer handling", "Total memory allocation: %d byte in %d buffers", iTotalSize, iCount); | |
543 | #endif //ALIHLTSYSTEM_PROFILING | |
3f2a1b1c | 544 | return iResult; |
545 | } | |
546 | ||
0a7afbf0 | 547 | int AliHLTDataBuffer::PrintStatistics() |
548 | { | |
549 | // see header file for function documentation | |
550 | int iResult=0; | |
551 | int iFree=0; | |
552 | int iActive=0; | |
553 | AliHLTRawBufferPList::iterator buffer;; | |
554 | for (buffer=fgFreeBuffers.begin(); buffer!=fgFreeBuffers.end(); buffer++) { | |
555 | iFree+=(*buffer)->GetTotalSize(); | |
556 | } | |
557 | for (buffer=fgActiveBuffers.begin(); buffer!=fgActiveBuffers.end(); buffer++) { | |
558 | iActive+=(*buffer)->GetTotalSize(); | |
559 | } | |
560 | fgLogging.Logging(kHLTLogInfo, "AliHLTDataBuffer::PrintStatistics", "data buffer handling", "Total memory allocation: %d byte; %d free buffers (%d byte) - %d active buffers (%d byte) ", iFree+iActive, fgFreeBuffers.size(), iFree, fgActiveBuffers.size(), iActive); | |
561 | return iResult; | |
562 | } | |
563 | ||
2be3f004 | 564 | AliHLTConsumerDescriptor* AliHLTDataBuffer::FindConsumer(const AliHLTComponent* pConsumer, AliHLTConsumerDescriptorPList &list) const |
3f2a1b1c | 565 | { |
70ed7d01 | 566 | // see header file for function documentation |
3f2a1b1c | 567 | AliHLTConsumerDescriptor* pDesc=NULL; |
2be3f004 | 568 | AliHLTConsumerDescriptorPList::iterator desc=list.begin(); |
3f2a1b1c | 569 | while (desc!=list.end() && pDesc==NULL) { |
0c0c9d99 | 570 | if ((pConsumer==NULL || (*desc)->GetComponent()==pConsumer)) { |
3f2a1b1c | 571 | pDesc=*desc; |
572 | } | |
0c0c9d99 | 573 | desc++; |
3f2a1b1c | 574 | } |
575 | return pDesc; | |
576 | } | |
577 | ||
0c0c9d99 | 578 | int AliHLTDataBuffer::ResetDataBuffer() |
579 | { | |
70ed7d01 | 580 | // see header file for function documentation |
3f2a1b1c | 581 | int iResult=0; |
0c0c9d99 | 582 | AliHLTRawBuffer* pBuffer=fpBuffer; |
3f2a1b1c | 583 | fpBuffer=NULL; |
9ce4bf4a | 584 | |
b46ca65e | 585 | // cleanup forwarded segment lists |
586 | assert(fForwardedSegments.size()==0); | |
587 | fForwardedSegments.clear(); | |
588 | fForwardedSegmentSources.clear(); | |
589 | ||
9ce4bf4a | 590 | // cleanup consumer states |
2be3f004 | 591 | AliHLTConsumerDescriptorPList::iterator desc; |
b426991e | 592 | // if (GetNofPendingConsumers()>0) { |
593 | // desc=fConsumers.begin(); | |
594 | // while (desc!=fConsumers.end()) { | |
595 | // AliHLTComponent* pComp=(*desc)->GetComponent(); | |
596 | // HLTError("internal error: consumer %p (%s %p) did not get data from data buffer %p", *desc, pComp?pComp->GetComponentID():"", pComp, this); | |
597 | // desc++; | |
598 | // } | |
599 | // } | |
600 | desc=fReleasedConsumers.begin(); | |
3f2a1b1c | 601 | while (desc!=fReleasedConsumers.end()) { |
602 | AliHLTConsumerDescriptor* pDesc=*desc; | |
603 | fReleasedConsumers.erase(desc); | |
604 | desc=fReleasedConsumers.begin(); | |
605 | fConsumers.push_back(pDesc); | |
606 | } | |
607 | desc=fActiveConsumers.begin(); | |
608 | while (desc!=fActiveConsumers.end()) { | |
609 | AliHLTConsumerDescriptor* pDesc=*desc; | |
48abe484 | 610 | HLTWarning("consumer %p (%s) was not released", pDesc, pDesc->GetComponent()?pDesc->GetComponent()->GetComponentID():"### invalid component ###"); |
3f2a1b1c | 611 | fActiveConsumers.erase(desc); |
612 | desc=fActiveConsumers.begin(); | |
613 | fConsumers.push_back(pDesc); | |
614 | } | |
9ce4bf4a | 615 | |
616 | // cleanup segments | |
2be3f004 | 617 | AliHLTDataSegmentList::iterator segment=fSegments.begin(); |
9ce4bf4a | 618 | while (segment!=fSegments.end()) { |
619 | fSegments.erase(segment); | |
620 | segment=fSegments.begin(); | |
621 | } | |
622 | ||
623 | // cleanup raw buffer | |
624 | if (pBuffer) { | |
625 | ReleaseRawBuffer(pBuffer); | |
626 | } | |
3f2a1b1c | 627 | return iResult; |
628 | } | |
629 | ||
9ce4bf4a | 630 | int AliHLTDataBuffer::Reset() |
631 | { | |
70ed7d01 | 632 | // see header file for function documentation |
9ce4bf4a | 633 | return ResetDataBuffer(); |
634 | } | |
635 | ||
0c0c9d99 | 636 | // this is the version which works on lists of components instead of consumer descriptors |
2be3f004 | 637 | // int AliHLTDataBuffer::ChangeConsumerState(AliHLTComponent* pConsumer, AliHLTComponentPList &srcList, AliHLTComponentPList &tgtList) |
0c0c9d99 | 638 | // { |
639 | // int iResult=0; | |
640 | // if (pDesc) { | |
2be3f004 | 641 | // AliHLTComponentPList::iterator desc=srcList.begin(); |
0c0c9d99 | 642 | // while (desc!=srcList.end()) { |
643 | // if ((*desc)==pConsumer) { | |
644 | // srcList.erase(desc); | |
645 | // tgtList.push_back(pConsumer); | |
646 | // break; | |
647 | // } | |
648 | // desc++; | |
649 | // } | |
650 | // if (desc==srcList.end()) { | |
651 | // HLTError("can not find consumer component %p in list", pConsumer); | |
652 | // iResult=-ENOENT; | |
653 | // } | |
654 | // } else { | |
655 | // HLTError("invalid parameter"); | |
656 | // iResult=-EINVAL; | |
657 | // } | |
658 | // return iResult; | |
659 | // } | |
660 | ||
2be3f004 | 661 | int AliHLTDataBuffer::ChangeConsumerState(AliHLTConsumerDescriptor* pDesc, AliHLTConsumerDescriptorPList &srcList, AliHLTConsumerDescriptorPList &tgtList) |
3f2a1b1c | 662 | { |
70ed7d01 | 663 | // see header file for function documentation |
9ce4bf4a | 664 | int iResult=-ENOENT; |
3f2a1b1c | 665 | if (pDesc) { |
2be3f004 | 666 | AliHLTConsumerDescriptorPList::iterator desc=srcList.begin(); |
3f2a1b1c | 667 | while (desc!=srcList.end()) { |
668 | if ((*desc)==pDesc) { | |
669 | srcList.erase(desc); | |
670 | tgtList.push_back(pDesc); | |
9ce4bf4a | 671 | iResult=0; |
3f2a1b1c | 672 | break; |
673 | } | |
0c0c9d99 | 674 | desc++; |
3f2a1b1c | 675 | } |
9ce4bf4a | 676 | if (iResult<0) { |
3f2a1b1c | 677 | HLTError("can not find consumer descriptor %p in list", pDesc); |
3f2a1b1c | 678 | } |
679 | } else { | |
680 | HLTError("invalid parameter"); | |
681 | iResult=-EINVAL; | |
682 | } | |
683 | return iResult; | |
684 | } | |
685 | ||
70ed7d01 | 686 | int AliHLTDataBuffer::CleanupConsumerList() |
687 | { | |
688 | // see header file for function documentation | |
3f2a1b1c | 689 | int iResult=0; |
690 | ResetDataBuffer(); | |
2be3f004 | 691 | AliHLTConsumerDescriptorPList::iterator desc=fConsumers.begin(); |
3f2a1b1c | 692 | while (desc!=fConsumers.end()) { |
693 | delete *desc; | |
694 | fConsumers.erase(desc); | |
695 | desc=fConsumers.begin(); | |
696 | } | |
697 | return iResult; | |
698 | } | |
9ce4bf4a | 699 | |
d4a18597 | 700 | int AliHLTDataBuffer::FindConsumer(const AliHLTComponent* pConsumer, int bAllLists) |
70ed7d01 | 701 | { |
702 | // see header file for function documentation | |
2be3f004 | 703 | AliHLTConsumerDescriptorPList::iterator desc=fConsumers.begin(); |
9ce4bf4a | 704 | while (desc!=fConsumers.end()) { |
705 | if ((*desc)->GetComponent()==pConsumer) | |
706 | return 1; | |
707 | desc++; | |
708 | } | |
709 | if (bAllLists==0) return 0; | |
710 | ||
711 | desc=fActiveConsumers.begin(); | |
712 | while (desc!=fActiveConsumers.end()) { | |
713 | if ((*desc)->GetComponent()==pConsumer) | |
714 | return 1; | |
715 | desc++; | |
716 | } | |
717 | desc=fReleasedConsumers.begin(); | |
718 | while (desc!=fReleasedConsumers.end()) { | |
719 | if ((*desc)->GetComponent()==pConsumer) | |
720 | return 1; | |
721 | desc++; | |
722 | } | |
723 | return 0; | |
724 | } | |
1e6e67ec | 725 | |
d6cbe999 | 726 | AliHLTDataBuffer::AliHLTRawBuffer::AliHLTRawBuffer(AliHLTUInt32_t size) |
727 | : | |
c0a2bfc2 | 728 | fSize(0), |
d6cbe999 | 729 | fTotalSize(size), |
0a7afbf0 | 730 | fPtr(static_cast<AliHLTUInt8_t*>(malloc(size))), |
731 | fLastEventCount(0) | |
d6cbe999 | 732 | { |
733 | // see header file for class documentation | |
734 | // or | |
735 | // refer to README to build package | |
736 | // or | |
737 | // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt | |
738 | if (fPtr==NULL) { | |
739 | fSize=0; | |
740 | fTotalSize=0; | |
741 | } | |
742 | } | |
743 | ||
744 | AliHLTDataBuffer::AliHLTRawBuffer::~AliHLTRawBuffer() | |
745 | { | |
746 | if (fPtr) { | |
747 | free(fPtr); | |
748 | } | |
749 | fPtr=NULL; | |
750 | fSize=0; | |
751 | fTotalSize=0; | |
752 | } | |
753 | ||
3a7c0444 | 754 | int AliHLTDataBuffer::AliHLTRawBuffer::operator==(void* ptr) const |
1e6e67ec | 755 | { |
3a7c0444 | 756 | // see header file for function documentation |
1e6e67ec | 757 | return fPtr == static_cast<AliHLTUInt8_t*>(ptr); |
758 | } | |
759 | ||
3a7c0444 | 760 | int AliHLTDataBuffer::AliHLTRawBuffer::operator<=(void* ptr) const |
1e6e67ec | 761 | { |
3a7c0444 | 762 | // see header file for function documentation |
1e6e67ec | 763 | int iResult=fPtr <= static_cast<AliHLTUInt8_t*>(ptr); |
764 | //printf("%p: %p <= %p (%d)\n", this, fPtr, ptr, iResult); | |
765 | return iResult; | |
766 | } | |
767 | ||
3a7c0444 | 768 | int AliHLTDataBuffer::AliHLTRawBuffer::operator>(void* ptr) const |
1e6e67ec | 769 | { |
3a7c0444 | 770 | // see header file for function documentation |
1e6e67ec | 771 | int iResult=fPtr+fSize > static_cast<AliHLTUInt8_t*>(ptr); |
772 | //printf("%p: %p + %d > %p (%d)\n", this, fPtr, fSize, ptr, iResult); | |
773 | return iResult; | |
774 | } | |
775 | ||
3a7c0444 | 776 | int AliHLTDataBuffer::AliHLTRawBuffer::operator-(void* ptr) const |
1e6e67ec | 777 | { |
3a7c0444 | 778 | // see header file for function documentation |
1e6e67ec | 779 | return static_cast<int>(static_cast<AliHLTUInt8_t*>(ptr)-fPtr); |
780 | } | |
d6cbe999 | 781 | |
782 | AliHLTUInt8_t* AliHLTDataBuffer::AliHLTRawBuffer::UseBuffer(AliHLTUInt32_t size) | |
783 | { | |
784 | // see header file for function documentation | |
dba03d72 | 785 | if (size>0 && fTotalSize>=size) { |
d6cbe999 | 786 | fSize=size; |
0a7afbf0 | 787 | fLastEventCount=AliHLTDataBuffer::fgEventCount; |
d6cbe999 | 788 | return fPtr; |
789 | } | |
790 | return NULL; | |
791 | } | |
792 | ||
793 | int AliHLTDataBuffer::AliHLTRawBuffer::CheckSize(AliHLTUInt32_t size) const | |
794 | { | |
795 | // see header file for function documentation | |
0a7afbf0 | 796 | if (fTotalSize<size) return 0; |
797 | unsigned adjust=0; | |
798 | if (fLastEventCount+1<AliHLTDataBuffer::fgEventCount) { | |
799 | adjust=AliHLTDataBuffer::fgEventCount-fLastEventCount; | |
800 | } | |
801 | return (adjust>2) || ((fTotalSize-size)<(fgMargin<<adjust)); | |
d6cbe999 | 802 | } |
803 | ||
804 | int AliHLTDataBuffer::AliHLTRawBuffer::Reset() | |
805 | { | |
806 | // see header file for function documentation | |
807 | fSize=0; | |
2be3f004 | 808 | return 0; |
d6cbe999 | 809 | } |
810 | ||
811 | int AliHLTDataBuffer::AliHLTRawBuffer::WritePattern(const char* pattern, int size) | |
812 | { | |
813 | // see header file for function documentation | |
814 | int iResult=0; | |
815 | if (pattern!=NULL && size>0) { | |
816 | if (fSize+size<=fTotalSize) { | |
817 | memcpy(((char*)fPtr)+fSize, pattern, size); | |
818 | iResult=size; | |
819 | } else { | |
820 | iResult=-ENOSPC; | |
821 | } | |
822 | } | |
823 | return iResult; | |
824 | } | |
825 | ||
826 | int AliHLTDataBuffer::AliHLTRawBuffer::CheckPattern(const char* pattern, int size) const | |
827 | { | |
828 | // see header file for function documentation | |
829 | int iResult=0; | |
830 | if (pattern!=NULL && size>0) { | |
831 | if (fSize+size<=fTotalSize) { | |
832 | iResult=memcmp(((char*)fPtr)+fSize, pattern, size)!=0; | |
833 | } else { | |
834 | iResult=-ENOSPC; | |
835 | } | |
836 | } | |
837 | return iResult; | |
838 | } |