CorrelationJoinExecStream Class Reference

CorrelationJoinExecStream produces a join of two input streams. More...

#include <CorrelationJoinExecStream.h>

Inheritance diagram for CorrelationJoinExecStream:

ConfluenceExecStream SingleOutputExecStream ExecStream ClosableObject TraceSource ErrorSource List of all members.

Public Member Functions

virtual void prepare (CorrelationJoinExecStreamParams const &params)
virtual ExecStreamResult execute (ExecStreamQuantum const &quantum)
 Executes this stream.
void open (bool restart)
 Opens this stream, acquiring any resources needed in order to be able to fetch data.
virtual void close ()
 Closes this object, releasing any unallocated resources.
virtual void prepare (ConfluenceExecStreamParams const &params)
virtual void prepare (SingleOutputExecStreamParams const &params)
virtual void prepare (ExecStreamParams const &params)
 Prepares this stream for execution.
virtual void setInputBufAccessors (std::vector< SharedExecStreamBufAccessor > const &inAccessors)
 Initializes the buffer accessors for inputs to this stream.
virtual ExecStreamBufProvision getInputBufProvision () const
 Queries the BufferProvision which this stream requires of its inputs when consuming their tuples.
virtual void setOutputBufAccessors (std::vector< SharedExecStreamBufAccessor > const &outAccessors)
 Initializes the buffer accessors for outputs from this stream.
virtual ExecStreamBufProvision getOutputBufProvision () const
 Queries the BufferProvision which this stream is capable of when producing tuples.
virtual bool canEarlyClose ()
 
Returns:
true if the stream can be closed early

ExecStreamGraph & getGraph () const
 
Returns:
reference to containing graph

ExecStreamId getStreamId () const
 
Returns:
the identifier for this stream within containing graph

virtual void getResourceRequirements (ExecStreamResourceQuantity &minQuantity, ExecStreamResourceQuantity &optQuantity, ExecStreamResourceSettingType &optType)
 Determines resource requirements for this stream.
virtual void getResourceRequirements (ExecStreamResourceQuantity &minQuantity, ExecStreamResourceQuantity &optQuantity)
virtual void setResourceAllocation (ExecStreamResourceQuantity &quantity)
 Sets current resource allocation for this stream.
virtual void setName (std::string const &)
 Sets unique name of this stream.
virtual std::string const & getName () const
 
Returns:
the name of this stream, as known by the optimizer

virtual bool mayBlock () const
 Queries whether this stream's implementation may block when execute() is called.
virtual void checkAbort () const
 Checks whether there is an abort request for this stream's scheduler.
virtual ExecStreamBufProvision getOutputBufConversion () const
 Queries the BufferProvision to which this stream needs its output to be converted, if any.
bool isClosed () const
 
Returns:
whether the object has been closed

virtual void initTraceSource (SharedTraceTarget pTraceTarget, std::string name)
 For use when initialization has to be deferred until after construction.
void trace (TraceLevel level, std::string message) const
 Records a trace message.
bool isTracing () const
 
Returns:
true iff tracing is enabled for this source

bool isTracingLevel (TraceLevel level) const
 Determines whether a particular level is being traced.
TraceTarget & getTraceTarget () const
 
Returns:
the TraceTarget for this source

SharedTraceTarget getSharedTraceTarget () const
 
Returns:
the SharedTraceTarget for this source

std::string getTraceSourceName () const
 Gets the name of this source.
void setTraceSourceName (std::string const &n)
 Sets the name of this source.
TraceLevel getMinimumTraceLevel () const
void disableTracing ()
virtual void initErrorSource (SharedErrorTarget pErrorTarget, const std::string &name)
 For use when initialization has to be deferred until after construction.
void postError (ErrorLevel level, const std::string &message, void *address, long capacity, int index)
 Posts an exception, such as a row exception.
void postError (ErrorLevel level, const std::string &message, const TupleDescriptor &errorDesc, const TupleData &errorTuple, int index)
 Posts an exception, such as a row exception.
bool hasTarget () const
 
Returns:
true iff an error target has been set

ErrorTarget & getErrorTarget () const
 
Returns:
the ErrorTarget for this source

SharedErrorTarget getSharedErrorTarget () const
 
Returns:
the SharedErrorTarget for this source

std::string getErrorSourceName () const
 Gets the name of this source.
void setErrorSourceName (std::string const &n)
 Sets the name of this source.
void disableTarget ()

Protected Member Functions

virtual void closeImpl ()
 Implements ClosableObject.

Protected Attributes

std::vector< SharedExecStreamBufAccessor > inAccessors
SharedExecStreamBufAccessor pOutAccessor
bool isOpen
 Whether this stream is currently open.
ExecStreamGraph * pGraph
 Dataflow graph containing this stream.
ExecStreamId id
 Identifier for this stream; local to its containing graph.
std::string name
 Name of stream, as known by optimizer.
SharedDynamicParamManager pDynamicParamManager
 The dynamic parameter manager available to this stream.
SharedLogicalTxn pTxn
 The transaction embracing the stream.
ExecStreamResourceQuantity resourceAllocation
 Resource quantities currently allocated to this stream.
SharedCacheAccessor pQuotaAccessor
 CacheAccessor used for quota tracking.
SharedCacheAccessor pScratchQuotaAccessor
 CacheAccessor used for scratch page quota tracking.
bool needsClose

Private Attributes

TupleData outputData
SharedExecStreamBufAccessor pLeftBufAccessor
SharedExecStreamBufAccessor pRightBufAccessor
uint nLeftAttributes
std::vector< Correlation > correlations
uint leftRowCount
 number of rows read from left-hand side since open(false)

Detailed Description

CorrelationJoinExecStream produces a join of two input streams.

The correlation will happen based on one or several given columns from the left-hand side.

Author:
Wael Chatila
Version:
Id
//open/dev/fennel/exec/CorrelationJoinExecStream.h#3

Definition at line 68 of file CorrelationJoinExecStream.h.

Member Function Documentation

void CorrelationJoinExecStream::prepare ( CorrelationJoinExecStreamParams const &  params  )  [virtual]

Definition at line 34 of file CorrelationJoinExecStream.cpp.

References TupleData::compute(), CorrelationJoinExecStreamParams::correlations, correlations, ConfluenceExecStream::inAccessors, nLeftAttributes, outputData, pLeftBufAccessor, SingleOutputExecStream::pOutAccessor, ConfluenceExecStream::prepare(), and pRightBufAccessor.

00036 {
00037     assert(inAccessors.size() == 2);
00038 
00039     pLeftBufAccessor = inAccessors[0];
00040     assert(pLeftBufAccessor);
00041 
00042     pRightBufAccessor = inAccessors[1];
00043     assert(pRightBufAccessor);
00044 
00045     TupleDescriptor const &leftDesc = pLeftBufAccessor->getTupleDesc();
00046     TupleDescriptor const &rightDesc = pRightBufAccessor->getTupleDesc();
00047 
00048     TupleDescriptor outputDesc;
00049     outputDesc.insert(outputDesc.end(),leftDesc.begin(),leftDesc.end());
00050     outputDesc.insert(outputDesc.end(),rightDesc.begin(),rightDesc.end());
00051     outputData.compute(outputDesc);
00052     pOutAccessor->setTupleShape(outputDesc);
00053 
00054     nLeftAttributes = leftDesc.size();
00055     correlations.assign(
00056         params.correlations.begin(),
00057         params.correlations.end());
00058     //correlations.resize(correlations.size());
00059     //assert(correlations.size() > 0);
00060     assert(correlations.size() <= nLeftAttributes);
00061 
00062     ConfluenceExecStream::prepare(params);
00063 }

ExecStreamResult CorrelationJoinExecStream::execute ( ExecStreamQuantum const &  quantum  )  [virtual]

Executes this stream.

Parameters:
quantum governs the maximum amount of execution to perform
Returns:
code indicating reason execution ceased

Implements ExecStream.

Definition at line 103 of file CorrelationJoinExecStream.cpp.

References correlations, EXECBUF_EOS, EXECRC_BUF_OVERFLOW, EXECRC_BUF_UNDERFLOW, EXECRC_EOS, EXECRC_QUANTUM_EXPIRED, ExecStreamGraph::getDynamicParamReaders(), ExecStreamGraph::getScheduler(), ExecStreamGraph::getStream(), ExecStream::getStreamId(), ExecStreamGraph::getStreamInput(), leftRowCount, nLeftAttributes, ExecStreamQuantum::nTuplesMax, outputData, ExecStream::pDynamicParamManager, ExecStream::pGraph, pLeftBufAccessor, SingleOutputExecStream::pOutAccessor, pRightBufAccessor, and ExecStreamScheduler::setRunnable().

00105 {
00106     // Note: implementation similar to CartesianJoinExecStream.
00107     uint nTuplesProduced = 0;
00108 
00109     for (;;) {
00110         if (!pLeftBufAccessor->isTupleConsumptionPending()) {
00111             if (pLeftBufAccessor->getState() == EXECBUF_EOS) {
00112                 pOutAccessor->markEOS();
00113                 return EXECRC_EOS;
00114             }
00115             if (!pLeftBufAccessor->demandData()) {
00116                 return EXECRC_BUF_UNDERFLOW;
00117             }
00118             pLeftBufAccessor->unmarshalTuple(outputData);
00119             // updating the dynamic param(s) with the new left value(s)
00120             std::vector<Correlation>::iterator it = correlations.begin();
00121             for (/* empty */ ; it != correlations.end(); ++it) {
00122                 pDynamicParamManager->writeParam(
00123                     it->dynamicParamId, outputData[it->leftAttributeOrdinal]);
00124             }
00125 
00126             // restart right input stream
00127             pGraph->getStreamInput(getStreamId(),1)->open(true);
00128 
00129             // make runnable
00130             if (++leftRowCount == 1) {
00131                 for (std::vector<Correlation>::iterator it =
00132                      correlations.begin();
00133                      it != correlations.end(); ++it)
00134                 {
00135                     // Make the right-hand descendant that uses the
00136                     // variable runnable. Note that we made it
00137                     // non-runnable in open so that it didn't read an
00138                     // uninitialized variable.
00139                     const std::vector<ExecStreamId> &readerStreamIds =
00140                         pGraph->getDynamicParamReaders(it->dynamicParamId);
00141                     for (std::vector<ExecStreamId>::const_iterator it2 =
00142                              readerStreamIds.begin();
00143                          it2 != readerStreamIds.end(); ++it2)
00144                     {
00145                         pGraph->getScheduler()->setRunnable(
00146                              *pGraph->getStream(*it2), true);
00147                     }
00148                 }
00149             }
00150         }
00151         for (;;) {
00152             if (!pRightBufAccessor->isTupleConsumptionPending()) {
00153                 if (pRightBufAccessor->getState() == EXECBUF_EOS) {
00154                     pLeftBufAccessor->consumeTuple();
00155                     break;
00156                 }
00157                 if (!pRightBufAccessor->demandData()) {
00158                     return EXECRC_BUF_UNDERFLOW;
00159                 }
00160                 pRightBufAccessor->unmarshalTuple(
00161                     outputData, nLeftAttributes);
00162                 break;
00163             }
00164 
00165             if (pOutAccessor->produceTuple(outputData)) {
00166                 ++nTuplesProduced;
00167             } else {
00168                 return EXECRC_BUF_OVERFLOW;
00169             }
00170 
00171             pRightBufAccessor->consumeTuple();
00172 
00173             if (nTuplesProduced >= quantum.nTuplesMax) {
00174                 return EXECRC_QUANTUM_EXPIRED;
00175             }
00176         }
00177     }
00178 }

void CorrelationJoinExecStream::open ( bool  restart  )  [virtual]

Opens this stream, acquiring any resources needed in order to be able to fetch data.

A precondition is that input streams must already be opened. A stream can be closed and reopened.

Parameters:
restart if true, the stream must be already open, and should reset itself to start from the beginning of its result set

Reimplemented from ConfluenceExecStream.

Definition at line 65 of file CorrelationJoinExecStream.cpp.

References correlations, ExecStreamGraph::getDynamicParamReaders(), ExecStreamGraph::getScheduler(), ExecStreamGraph::getStream(), leftRowCount, ConfluenceExecStream::open(), ExecStream::pDynamicParamManager, ExecStream::pGraph, pLeftBufAccessor, and ExecStreamScheduler::setRunnable().

00066 {
00067     ConfluenceExecStream::open(restart);
00068 
00069     if (!restart) {
00070         leftRowCount = 0;
00071         for (std::vector<Correlation>::iterator it = correlations.begin();
00072              it != correlations.end(); ++it)
00073         {
00074             pDynamicParamManager->createParam(
00075                 it->dynamicParamId,
00076                 pLeftBufAccessor->getTupleDesc()[it->leftAttributeOrdinal]);
00077 
00078             // Make right-hand child and its descendants (upstream XOs)
00079             // non-runnable. We don't want them to execute until we have
00080             // read a row from the left and called open(restart=true).
00081             const std::vector<ExecStreamId> &readerStreamIds =
00082                 pGraph->getDynamicParamReaders(it->dynamicParamId);
00083             for (std::vector<ExecStreamId>::const_iterator it2 =
00084                      readerStreamIds.begin();
00085                  it2 != readerStreamIds.end(); ++it2)
00086             {
00087                 pGraph->getScheduler()->setRunnable(
00088                     *pGraph->getStream(*it2), false);
00089             }
00090         }
00091     }
00092 }

void CorrelationJoinExecStream::close (  )  [virtual]

Closes this object, releasing any unallocated resources.

Reimplemented from ClosableObject.

Definition at line 94 of file CorrelationJoinExecStream.cpp.

References ExecStream::closeImpl(), correlations, and ExecStream::pDynamicParamManager.

00095 {
00096     std::vector<Correlation>::iterator it = correlations.begin();
00097     for (/* empty */ ; it != correlations.end(); ++it) {
00098         pDynamicParamManager->deleteParam(it->dynamicParamId);
00099     }
00100     ConfluenceExecStream::closeImpl();
00101 }

void ConfluenceExecStream::prepare ( ConfluenceExecStreamParams const &  params  )  [virtual, inherited]

Definition at line 37 of file ConfluenceExecStream.cpp.

References ConfluenceExecStream::getInputBufProvision(), ConfluenceExecStream::inAccessors, and SingleOutputExecStream::prepare().

Referenced by LcsRowScanBaseExecStream::prepare(), LbmUnionExecStream::prepare(), LbmChopperExecStream::prepare(), LbmBitOpExecStream::prepare(), LhxJoinExecStream::prepare(), MergeExecStream::prepare(), prepare(), CartesianJoinExecStream::prepare(), and BarrierExecStream::prepare().

00038 {
00039     SingleOutputExecStream::prepare(params);
00040 
00041     for (uint i = 0; i < inAccessors.size(); ++i) {
00042         assert(inAccessors[i]->getProvision() == getInputBufProvision());
00043     }
00044 }

void SingleOutputExecStream::prepare ( SingleOutputExecStreamParams const &  params  )  [virtual, inherited]

Definition at line 48 of file SingleOutputExecStream.cpp.

References SingleOutputExecStream::getOutputBufProvision(), SingleOutputExecStreamParams::outputTupleDesc, SingleOutputExecStreamParams::outputTupleFormat, SingleOutputExecStream::pOutAccessor, and ExecStream::prepare().

Referenced by BTreeExecStream::prepare(), FlatFileExecStreamImpl::prepare(), ValuesExecStream::prepare(), MockResourceExecStream::prepare(), MockProducerExecStream::prepare(), ConfluenceExecStream::prepare(), and ConduitExecStream::prepare().

00049 {
00050     ExecStream::prepare(params);
00051     assert(pOutAccessor);
00052     assert(pOutAccessor->getProvision() == getOutputBufProvision());
00053     if (pOutAccessor->getTupleDesc().empty()) {
00054         assert(!params.outputTupleDesc.empty());
00055         pOutAccessor->setTupleShape(
00056             params.outputTupleDesc,
00057             params.outputTupleFormat);
00058     }
00059 }

void ExecStream::prepare ( ExecStreamParams const &  params  )  [virtual, inherited]

Prepares this stream for execution.

A precondition is that input streams must already be defined and prepared. As an effect of this call, the tuple shape should be defined for all output buffers and remain unchanged for the lifetime of the stream. This method is only ever called once, before the first open. Although this method is virtual, derived classes may choose to define an overloaded version instead with a specialized covariant parameter class.

Parameters:
params instance of stream parameterization class which should be used to prepare this stream

Definition at line 84 of file ExecStream.cpp.

References ExecStreamGraph::getDynamicParamManager(), SegmentAccessor::pCacheAccessor, ExecStreamParams::pCacheAccessor, ExecStream::pDynamicParamManager, ExecStream::pGraph, ExecStream::pQuotaAccessor, ExecStream::pScratchQuotaAccessor, and ExecStreamParams::scratchAccessor.

Referenced by JavaTransformExecStream::prepare(), SingleOutputExecStream::prepare(), and SingleInputExecStream::prepare().

00085 {
00086     if (pGraph) {
00087         pDynamicParamManager = pGraph->getDynamicParamManager();
00088     }
00089     pQuotaAccessor = params.pCacheAccessor;
00090     pScratchQuotaAccessor = params.scratchAccessor.pCacheAccessor;
00091 }

void ConfluenceExecStream::setInputBufAccessors ( std::vector< SharedExecStreamBufAccessor > const &  inAccessors  )  [virtual, inherited]

Initializes the buffer accessors for inputs to this stream.

This method is only ever called once, before prepare.

Parameters:
inAccessors buffer accessors ordered by input stream

Reimplemented from SingleOutputExecStream.

Definition at line 31 of file ConfluenceExecStream.cpp.

References ConfluenceExecStream::inAccessors.

00033 {
00034     inAccessors = inAccessorsInit;
00035 }

ExecStreamBufProvision ConfluenceExecStream::getInputBufProvision (  )  const [virtual, inherited]

Queries the BufferProvision which this stream requires of its inputs when consuming their tuples.

Returns:
required model; default is BUFPROV_NONE

Reimplemented from ExecStream.

Definition at line 58 of file ConfluenceExecStream.cpp.

References BUFPROV_PRODUCER.

Referenced by ConfluenceExecStream::prepare().

00059 {
00060     return BUFPROV_PRODUCER;
00061 }

void SingleOutputExecStream::setOutputBufAccessors ( std::vector< SharedExecStreamBufAccessor > const &  outAccessors  )  [virtual, inherited]

Initializes the buffer accessors for outputs from this stream.

This method is only ever called once, before prepare.

Parameters:
outAccessors buffer accessors ordered by output stream

Implements ExecStream.

Reimplemented in ConduitExecStream.

Definition at line 41 of file SingleOutputExecStream.cpp.

References SingleOutputExecStream::pOutAccessor.

Referenced by ConduitExecStream::setOutputBufAccessors().

00043 {
00044     assert(outAccessors.size() == 1);
00045     pOutAccessor = outAccessors[0];
00046 }

ExecStreamBufProvision SingleOutputExecStream::getOutputBufProvision (  )  const [virtual, inherited]

Queries the BufferProvision which this stream is capable of when producing tuples.

Returns:
supported model; default is BUFPROV_NONE

Reimplemented from ExecStream.

Reimplemented in BarrierExecStream, DoubleBufferExecStream, MergeExecStream, MockResourceExecStream, ScratchBufferExecStream, SegBufferExecStream, SegBufferReaderExecStream, ValuesExecStream, FtrsTableWriterExecStream, and LcsClusterAppendExecStream.

Definition at line 69 of file SingleOutputExecStream.cpp.

References BUFPROV_CONSUMER.

Referenced by SingleOutputExecStream::prepare().

00070 {
00071     return BUFPROV_CONSUMER;
00072 }

void ExecStream::closeImpl (  )  [protected, virtual, inherited]

Implements ClosableObject.

ExecStream implementations may override this to release any resources acquired while open.

Implements ClosableObject.

Reimplemented in BarrierExecStream, DoubleBufferExecStream, MockResourceExecStream, ReshapeExecStream, ScratchBufferExecStream, SegBufferExecStream, SegBufferReaderExecStream, SegBufferWriterExecStream, JavaSinkExecStream, JavaTransformExecStream, FlatFileExecStreamImpl, BTreeExecStream, BTreeInsertExecStream, BTreePrefetchSearchExecStream, BTreeReadExecStream, BTreeSearchExecStream, FtrsTableWriterExecStream, LhxAggExecStream, LhxJoinExecStream, LbmBitOpExecStream, LbmChopperExecStream, LbmGeneratorExecStream, LbmIntersectExecStream, LbmMinusExecStream, LbmSplicerExecStream, LbmUnionExecStream, LcsClusterAppendExecStream, LcsRowScanBaseExecStream, LcsRowScanExecStream, and ExternalSortExecStreamImpl.

Definition at line 54 of file ExecStream.cpp.

References ExecStream::isOpen.

Referenced by close(), CollectExecStream::close(), ExternalSortExecStreamImpl::closeImpl(), LcsRowScanBaseExecStream::closeImpl(), LcsClusterAppendExecStream::closeImpl(), LbmUnionExecStream::closeImpl(), LbmSplicerExecStream::closeImpl(), LbmChopperExecStream::closeImpl(), LbmBitOpExecStream::closeImpl(), LhxJoinExecStream::closeImpl(), LhxAggExecStream::closeImpl(), FtrsTableWriterExecStream::closeImpl(), BTreeSearchExecStream::closeImpl(), BTreeInsertExecStream::closeImpl(), BTreeExecStream::closeImpl(), FlatFileExecStreamImpl::closeImpl(), JavaTransformExecStream::closeImpl(), JavaSinkExecStream::closeImpl(), SegBufferWriterExecStream::closeImpl(), SegBufferReaderExecStream::closeImpl(), SegBufferExecStream::closeImpl(), ScratchBufferExecStream::closeImpl(), ReshapeExecStream::closeImpl(), MockResourceExecStream::closeImpl(), DoubleBufferExecStream::closeImpl(), and BarrierExecStream::closeImpl().

00055 {
00056     isOpen = false;
00057 
00058     // REVIEW jvs 19-July-2004:  It would be nice to be able to do this, making
00059     // sure no cache access is attempted while stream is closed.  However,
00060     // it currently causes trouble with TableWriters, which need
00061     // cache access for txn replay.
00062     /*
00063     if (pQuotaAccessor) {
00064         pQuotaAccessor->setMaxLockedPages(0);
00065     }
00066     if (pScratchQuotaAccessor) {
00067         pScratchQuotaAccessor->setMaxLockedPages(0);
00068     }
00069     */
00070 }

bool ExecStream::canEarlyClose (  )  [virtual, inherited]

Returns:
true if the stream can be closed early

Reimplemented in SegBufferWriterExecStream.

Definition at line 49 of file ExecStream.cpp.

00050 {
00051     return true;
00052 }

ExecStreamGraph & ExecStream::getGraph (  )  const [inline, inherited]

Returns:
reference to containing graph

Definition at line 293 of file ExecStream.h.

References ExecStream::pGraph.

Referenced by ExternalSortExecStreamImpl::execute(), JavaSinkExecStream::execute(), SegBufferWriterExecStream::execute(), SegBufferExecStream::execute(), BarrierExecStream::execute(), Java_net_sf_farrago_fennel_FennelStorage_tupleStreamFetch(), Java_net_sf_farrago_fennel_FennelStorage_tupleStreamTransformFetch(), JavaSinkExecStream::stuffByteBuffer(), and ExecStreamScheduler::traceStreamBuffers().

00294 {
00295     assert(pGraph);
00296     return *pGraph;
00297 }

ExecStreamId ExecStream::getStreamId (  )  const [inline, inherited]

Returns:
the identifier for this stream within containing graph

Definition at line 288 of file ExecStream.h.

References ExecStream::id.

Referenced by ExternalSortExecStreamImpl::execute(), SegBufferWriterExecStream::execute(), SegBufferExecStream::execute(), execute(), BarrierExecStream::execute(), Java_net_sf_farrago_fennel_FennelStorage_tupleStreamTransformFetch(), JavaTransformExecStream::open(), SingleInputExecStream::open(), ConfluenceExecStream::open(), CartesianJoinExecStream::prepare(), ParallelExecStreamScheduler::readStream(), DfsTreeExecStreamScheduler::readStream(), LbmMinusExecStream::restartSubtrahends(), ExecStreamScheduler::tracePostExecution(), ExecStreamScheduler::tracePreExecution(), ExecStreamScheduler::traceStreamBuffers(), and ParallelExecStreamScheduler::tryExecuteTask().

00289 {
00290     return id;
00291 }

void ExecStream::getResourceRequirements ( ExecStreamResourceQuantity &  minQuantity,
ExecStreamResourceQuantity &  optQuantity,
ExecStreamResourceSettingType &  optType 
) [virtual, inherited]

Determines resource requirements for this stream.

Default implementation declares zero resource requirements.

Parameters:
minQuantity receives the minimum resource quantity needed by this stream in order to execute
optQuantity receives the resource quantity needed by this stream in order to execute optimally
optType Receives the value indicating the accuracy of the optQuantity parameter. This parameter is optional and defaults to EXEC_RESOURCE_ACCURATE if omitted. If the optimum setting is an estimate or no value can be specified (e.g., due to lack of statistics), then this parameter needs to be used to indicate a non-accurate optimum resource setting.

Reimplemented in MockResourceExecStream, BTreePrefetchSearchExecStream, LhxAggExecStream, LhxJoinExecStream, LbmGeneratorExecStream, LbmUnionExecStream, and ExternalSortExecStreamImpl.

Definition at line 93 of file ExecStream.cpp.

References EXEC_RESOURCE_ACCURATE.

Referenced by ExternalSortExecStreamImpl::getResourceRequirements(), LcsRowScanBaseExecStream::getResourceRequirements(), LcsClusterAppendExecStream::getResourceRequirements(), LbmUnionExecStream::getResourceRequirements(), LbmSplicerExecStream::getResourceRequirements(), LbmGeneratorExecStream::getResourceRequirements(), LbmChopperExecStream::getResourceRequirements(), LhxJoinExecStream::getResourceRequirements(), LhxAggExecStream::getResourceRequirements(), FtrsTableWriterExecStream::getResourceRequirements(), BTreeReadExecStream::getResourceRequirements(), BTreeInsertExecStream::getResourceRequirements(), FlatFileExecStreamImpl::getResourceRequirements(), SegBufferWriterExecStream::getResourceRequirements(), SegBufferReaderExecStream::getResourceRequirements(), SegBufferExecStream::getResourceRequirements(), ScratchBufferExecStream::getResourceRequirements(), and DoubleBufferExecStream::getResourceRequirements().

00097 {
00098     getResourceRequirements(minQuantity, optQuantity);
00099     optType = EXEC_RESOURCE_ACCURATE;
00100 }

void ExecStream::getResourceRequirements ( ExecStreamResourceQuantity &  minQuantity,
ExecStreamResourceQuantity &  optQuantity 
) [virtual, inherited]

Reimplemented in DoubleBufferExecStream, ScratchBufferExecStream, SegBufferExecStream, SegBufferReaderExecStream, SegBufferWriterExecStream, FlatFileExecStreamImpl, BTreeInsertExecStream, BTreeReadExecStream, FtrsTableWriterExecStream, LbmChopperExecStream, LbmSplicerExecStream, LcsClusterAppendExecStream, LcsClusterReplaceExecStream, LcsRowScanBaseExecStream, and LcsRowScanExecStream.

Definition at line 102 of file ExecStream.cpp.

References ExecStreamResourceQuantity::nCachePages, and ExecStreamResourceQuantity::nThreads.

00105 {
00106     minQuantity.nThreads = 0;
00107     minQuantity.nCachePages = 0;
00108     optQuantity = minQuantity;
00109 }

void ExecStream::setResourceAllocation ( ExecStreamResourceQuantity &  quantity  )  [virtual, inherited]

Sets current resource allocation for this stream.

If called while the stream is open, this indicates a request for the stream to dynamically adjust its memory usage. If the stream is incapable of honoring the request, it should update quantity with the actual amounts still in use.

Parameters:
quantity allocated resource quantity

Reimplemented in MockResourceExecStream, BTreePrefetchSearchExecStream, LhxAggExecStream, LhxJoinExecStream, LbmGeneratorExecStream, LbmUnionExecStream, and ExternalSortExecStreamImpl.

Definition at line 111 of file ExecStream.cpp.

References ExecStreamResourceQuantity::nCachePages, ExecStream::pQuotaAccessor, ExecStream::pScratchQuotaAccessor, and ExecStream::resourceAllocation.

Referenced by ExternalSortExecStreamImpl::setResourceAllocation(), LbmUnionExecStream::setResourceAllocation(), LbmGeneratorExecStream::setResourceAllocation(), LhxJoinExecStream::setResourceAllocation(), LhxAggExecStream::setResourceAllocation(), and BTreePrefetchSearchExecStream::setResourceAllocation().

00113 {
00114     resourceAllocation = quantity;
00115     if (pQuotaAccessor) {
00116         pQuotaAccessor->setMaxLockedPages(quantity.nCachePages);
00117     }
00118     if (pScratchQuotaAccessor) {
00119         pScratchQuotaAccessor->setMaxLockedPages(quantity.nCachePages);
00120     }
00121 }

void ExecStream::setName ( std::string const &   )  [virtual, inherited]

Sets unique name of this stream.

Definition at line 157 of file ExecStream.cpp.

References ExecStream::name.

00158 {
00159     name = nameInit;
00160 }

std::string const & ExecStream::getName (  )  const [virtual, inherited]

Returns:
the name of this stream, as known by the optimizer

Definition at line 162 of file ExecStream.cpp.

References ExecStream::name.

Referenced by DfsTreeExecStreamScheduler::findNextConsumer(), ParallelExecStreamScheduler::readStream(), DfsTreeExecStreamScheduler::readStream(), ExecStreamScheduler::tracePostExecution(), and ExecStreamScheduler::tracePreExecution().

00163 {
00164     return name;
00165 }

bool ExecStream::mayBlock (  )  const [virtual, inherited]

Queries whether this stream's implementation may block when execute() is called.

For accurate scheduling, non-blocking implementations are preferred; the scheduler must be aware of the potential for blocking so that it can allocate extra threads accordingly.

Returns:
whether stream may block; default is false

Definition at line 167 of file ExecStream.cpp.

00168 {
00169     return false;
00170 }

void ExecStream::checkAbort (  )  const [virtual, inherited]

Checks whether there is an abort request for this stream's scheduler.

Normally, streams don't need to check this, since the scheduler services abort requests in between quanta. However, streams which enter long-running loops need to check for themselves. If an abort is scheduled, this method will throw an AbortExcn automatically.

Definition at line 72 of file ExecStream.cpp.

References ExecStreamScheduler::checkAbort(), ExecStreamGraph::getScheduler(), and ExecStream::pGraph.

Referenced by LhxJoinExecStream::execute(), LhxAggExecStream::execute(), ExternalSortRunAccessor::fetch(), and ExternalSortMerger::fetch().

00073 {
00074     if (!pGraph) {
00075         return;
00076     }
00077     ExecStreamScheduler *pScheduler = pGraph->getScheduler();
00078     if (!pScheduler) {
00079         return;
00080     }
00081     pScheduler->checkAbort();
00082 }

ExecStreamBufProvision ExecStream::getOutputBufConversion (  )  const [virtual, inherited]

Queries the BufferProvision to which this stream needs its output to be converted, if any.

Returns:
required conversion; default is BUFPROV_NONE

Reimplemented in JavaTransformExecStream.

Definition at line 177 of file ExecStream.cpp.

References BUFPROV_NONE.

00178 {
00179     return BUFPROV_NONE;
00180 }

bool ClosableObject::isClosed (  )  const [inline, inherited]

Returns:
whether the object has been closed

Definition at line 58 of file ClosableObject.h.

00059     {
00060         return !needsClose;
00061     }

void TraceSource::initTraceSource ( SharedTraceTarget  pTraceTarget,
std::string  name 
) [virtual, inherited]

For use when initialization has to be deferred until after construction.

Parameters:
pTraceTarget the TraceTarget to which messages will be sent
name the name of this source

Definition at line 46 of file TraceSource.cpp.

References TraceSource::isTracing(), TraceSource::minimumLevel, TraceSource::name, TraceSource::pTraceTarget, and TRACE_OFF.

Referenced by TestBase::beforeTestCase(), TestBase::TestBase(), and TraceSource::TraceSource().

00049 {
00050     assert(!pTraceTarget.get());
00051 
00052     pTraceTarget = pTraceTargetInit;
00053     name = nameInit;
00054     if (isTracing()) {
00055         minimumLevel = pTraceTarget->getSourceTraceLevel(name);
00056     } else {
00057         minimumLevel = TRACE_OFF;
00058     }
00059 }

void TraceSource::trace ( TraceLevel  level,
std::string  message 
) const [inherited]

Records a trace message.

Normally only called via FENNEL_TRACE.

Parameters:
level severity level of event being trace
message the text of the message

Definition at line 61 of file TraceSource.cpp.

References TraceSource::getTraceTarget(), TraceSource::isTracing(), TraceSource::name, and TraceTarget::notifyTrace().

Referenced by Calculator::exec(), and ExecStreamScheduler::traceStreamBufferContents().

00062 {
00063     if (isTracing()) {
00064         getTraceTarget().notifyTrace(name,level,message);
00065     }
00066 }

bool TraceSource::isTracing (  )  const [inline, inherited]

Returns:
true iff tracing is enabled for this source

Definition at line 88 of file TraceSource.h.

Referenced by TraceSource::initTraceSource(), CalcExecStream::prepare(), and TraceSource::trace().

00089     {
00090         return pTraceTarget.get() ? true : false;
00091     }

bool TraceSource::isTracingLevel ( TraceLevel  level  )  const [inline, inherited]

Determines whether a particular level is being traced.

Parameters:
level trace level to test
Returns:
true iff tracing is enabled for the given level

Definition at line 100 of file TraceSource.h.

Referenced by ExecStreamScheduler::addGraph(), SimpleExecStreamGovernor::assignCachePages(), SimpleExecStreamGovernor::distributeCachePages(), Calculator::exec(), ExecStreamScheduler::ExecStreamScheduler(), LcsClusterNodeWriter::getLastClusterPageForWrite(), LcsClusterNodeWriter::moveFromTempToIndex(), JavaSinkExecStream::stuffByteBuffer(), and ExecStreamScheduler::traceStreamBuffers().

00101     {
00102         return level >= minimumLevel;
00103     }

TraceTarget& TraceSource::getTraceTarget (  )  const [inline, inherited]

Returns:
the TraceTarget for this source

Definition at line 108 of file TraceSource.h.

Referenced by TraceSource::trace().

00109     {
00110         assert(isTracing());
00111         return *(pTraceTarget.get());
00112     }

SharedTraceTarget TraceSource::getSharedTraceTarget (  )  const [inline, inherited]

Returns:
the SharedTraceTarget for this source

Definition at line 117 of file TraceSource.h.

Referenced by Database::init(), LcsClusterAppendExecStream::initLoad(), and CalcExecStream::prepare().

00118     {
00119         return pTraceTarget;
00120     }

std::string TraceSource::getTraceSourceName (  )  const [inline, inherited]

Gets the name of this source.

Useful to construct nested names for subcomponents that are also TraceSources.

Returns:
the name

Definition at line 127 of file TraceSource.h.

Referenced by LcsClusterAppendExecStream::initLoad().

00128     {
00129         return name;
00130     }

void TraceSource::setTraceSourceName ( std::string const &  n  )  [inline, inherited]

Sets the name of this source.

Useful to construct dynamic names for fine-grained filtering.

Definition at line 136 of file TraceSource.h.

00137     {
00138         name = n;
00139     }

TraceLevel TraceSource::getMinimumTraceLevel (  )  const [inline, inherited]

Definition at line 141 of file TraceSource.h.

00142     {
00143         return minimumLevel;
00144     }

void TraceSource::disableTracing (  )  [inherited]

Definition at line 68 of file TraceSource.cpp.

References TraceSource::minimumLevel, TraceSource::pTraceTarget, and TRACE_OFF.

Referenced by TestBase::afterTestCase().

00069 {
00070     pTraceTarget.reset();
00071     minimumLevel = TRACE_OFF;
00072 }

void ErrorSource::initErrorSource ( SharedErrorTarget  pErrorTarget,
const std::string &  name 
) [virtual, inherited]

For use when initialization has to be deferred until after construction.

Parameters:
pErrorTarget the ErrorTarget to which errors will be posted
name the name of this source

Definition at line 47 of file ErrorSource.cpp.

References ErrorSource::name, and ErrorSource::pErrorTarget.

Referenced by ErrorSource::ErrorSource().

00050 {
00051     pErrorTarget = pErrorTargetInit;
00052     name = nameInit;
00053 }

void ErrorSource::postError ( ErrorLevel  level,
const std::string &  message,
void *  address,
long  capacity,
int  index 
) [inherited]

Posts an exception, such as a row exception.

See also:
ErrorTarget for a description of the parameters

Definition at line 55 of file ErrorSource.cpp.

References ErrorSource::getErrorTarget(), ErrorSource::hasTarget(), ErrorSource::name, and ErrorTarget::notifyError().

Referenced by FlatFileExecStreamImpl::logError(), ErrorSource::postError(), and LbmSplicerExecStream::postViolation().

00058 {
00059     if (hasTarget()) {
00060         getErrorTarget().notifyError(
00061             name, level, message, address, capacity, index);
00062     }
00063 }

void ErrorSource::postError ( ErrorLevel  level,
const std::string &  message,
const TupleDescriptor &  errorDesc,
const TupleData &  errorTuple,
int  index 
) [inherited]

Posts an exception, such as a row exception.

See also:
ErrorTarget for a description of the parameters

Definition at line 65 of file ErrorSource.cpp.

References TupleAccessor::compute(), ErrorSource::errorAccessor, FixedBuffer, TupleAccessor::getByteCount(), TupleAccessor::getMaxByteCount(), ErrorSource::hasTarget(), TupleAccessor::marshal(), ErrorSource::pErrorBuf, and ErrorSource::postError().

00068 {
00069     if (!hasTarget()) {
00070         return;
00071     }
00072 
00073     if (!pErrorBuf) {
00074         errorAccessor.compute(errorDesc);
00075         uint cbMax = errorAccessor.getMaxByteCount();
00076         pErrorBuf.reset(new FixedBuffer[cbMax]);
00077     }
00078 
00079     uint cbTuple = errorAccessor.getByteCount(errorTuple);
00080     errorAccessor.marshal(errorTuple, pErrorBuf.get());
00081     postError(level, message, pErrorBuf.get(), cbTuple, index);
00082 }

bool ErrorSource::hasTarget (  )  const [inline, inherited]

Returns:
true iff an error target has been set

Definition at line 112 of file ErrorSource.h.

Referenced by ErrorSource::postError().

00113     {
00114         return pErrorTarget.get() ? true : false;
00115     }

ErrorTarget& ErrorSource::getErrorTarget (  )  const [inline, inherited]

Returns:
the ErrorTarget for this source

Definition at line 120 of file ErrorSource.h.

Referenced by ErrorSource::postError().

00121     {
00122         assert(hasTarget());
00123         return *(pErrorTarget.get());
00124     }

SharedErrorTarget ErrorSource::getSharedErrorTarget (  )  const [inline, inherited]

Returns:
the SharedErrorTarget for this source

Definition at line 129 of file ErrorSource.h.

00130     {
00131         return pErrorTarget;
00132     }

std::string ErrorSource::getErrorSourceName (  )  const [inline, inherited]

Gets the name of this source.

Useful to construct nested names for subcomponents that are also ErrorSources.

Returns:
the name

Definition at line 139 of file ErrorSource.h.

00140     {
00141         return name;
00142     }

void ErrorSource::setErrorSourceName ( std::string const &  n  )  [inline, inherited]

Sets the name of this source.

Useful to construct dynamic names for fine-grained filtering.

Definition at line 148 of file ErrorSource.h.

00149     {
00150         name = n;
00151     }

void ErrorSource::disableTarget (  )  [inherited]

Definition at line 84 of file ErrorSource.cpp.

References ErrorSource::pErrorTarget.

00085 {
00086     pErrorTarget.reset();
00087 }

Member Data Documentation

TupleData CorrelationJoinExecStream::outputData [private]

Definition at line 71 of file CorrelationJoinExecStream.h.

Referenced by execute(), and prepare().

SharedExecStreamBufAccessor CorrelationJoinExecStream::pLeftBufAccessor [private]

Definition at line 72 of file CorrelationJoinExecStream.h.

Referenced by execute(), open(), and prepare().

SharedExecStreamBufAccessor CorrelationJoinExecStream::pRightBufAccessor [private]

Definition at line 73 of file CorrelationJoinExecStream.h.

Referenced by execute(), and prepare().

uint CorrelationJoinExecStream::nLeftAttributes [private]

Definition at line 74 of file CorrelationJoinExecStream.h.

Referenced by execute(), and prepare().

std::vector<Correlation> CorrelationJoinExecStream::correlations [private]

Definition at line 75 of file CorrelationJoinExecStream.h.

Referenced by close(), execute(), open(), and prepare().

uint CorrelationJoinExecStream::leftRowCount [private]

number of rows read from left-hand side since open(false)

Definition at line 78 of file CorrelationJoinExecStream.h.

Referenced by execute(), and open().

std::vector<SharedExecStreamBufAccessor> ConfluenceExecStream::inAccessors [protected, inherited]

Definition at line 50 of file ConfluenceExecStream.h.

Referenced by NestedLoopJoinExecStream::checkNumInputs(), CartesianJoinExecStream::checkNumInputs(), LbmMinusExecStream::comparePrefixes(), LbmGeneratorExecStream::execute(), MergeExecStream::execute(), BarrierExecStream::execute(), LbmMinusExecStream::findMinInput(), LcsRowScanExecStream::initializeFiltersIfNeeded(), LcsRowScanExecStream::open(), LbmUnionExecStream::open(), LbmMinusExecStream::open(), LbmGeneratorExecStream::open(), LbmChopperExecStream::open(), LbmBitOpExecStream::open(), ConfluenceExecStream::open(), LcsRowScanExecStream::prepare(), LbmUnionExecStream::prepare(), LbmMinusExecStream::prepare(), LbmGeneratorExecStream::prepare(), LbmChopperExecStream::prepare(), LbmBitOpExecStream::prepare(), LhxJoinExecStream::prepare(), MergeExecStream::prepare(), prepare(), ConfluenceExecStream::prepare(), CartesianJoinExecStream::prepare(), BarrierExecStream::prepare(), NestedLoopJoinExecStream::preProcessRightInput(), BarrierExecStream::processInputTuple(), LbmBitOpExecStream::producePendingOutput(), LbmMinusExecStream::restartSubtrahends(), LhxJoinExecStream::setHashInfo(), and ConfluenceExecStream::setInputBufAccessors().

SharedExecStreamBufAccessor SingleOutputExecStream::pOutAccessor [protected, inherited]

Definition at line 56 of file SingleOutputExecStream.h.

Referenced by LcsClusterAppendExecStream::compress(), ExternalSortExecStreamImpl::execute(), LcsRowScanExecStream::execute(), LbmUnionExecStream::execute(), LbmNormalizerExecStream::execute(), LbmGeneratorExecStream::execute(), LbmChopperExecStream::execute(), LhxJoinExecStream::execute(), LhxAggExecStream::execute(), FtrsTableWriterExecStream::execute(), BTreeSortExecStream::execute(), BTreeSearchUniqueExecStream::execute(), BTreeScanExecStream::execute(), BTreePrefetchSearchExecStream::execute(), BTreeInsertExecStream::execute(), FlatFileExecStreamImpl::execute(), ValuesExecStream::execute(), UncollectExecStream::execute(), SortedAggExecStream::execute(), SegBufferReaderExecStream::execute(), ScratchBufferExecStream::execute(), ReshapeExecStream::execute(), MockResourceExecStream::execute(), MockProducerExecStream::execute(), MergeExecStream::execute(), DoubleBufferExecStream::execute(), execute(), CopyExecStream::execute(), CollectExecStream::execute(), CartesianJoinExecStream::execute(), BernoulliSamplingExecStream::execute(), BarrierExecStream::execute(), CalcExecStream::execute(), LbmGeneratorExecStream::flushEntry(), MockProducerExecStream::getProducedRowCount(), ExternalSortExecStreamImpl::getResourceRequirements(), BTreeSearchExecStream::innerFetchLoop(), LbmUnionExecStream::open(), LbmChopperExecStream::open(), LbmBitOpExecStream::open(), SingleOutputExecStream::open(), SegBufferReaderExecStream::open(), SegBufferExecStream::open(), ScratchBufferExecStream::open(), DoubleBufferExecStream::open(), CollectExecStream::open(), SegBufferExecStream::openBufferForRead(), ConduitExecStream::precheckConduitBuffers(), LcsRowScanExecStream::prepare(), LcsRowScanBaseExecStream::prepare(), LcsClusterAppendExecStream::prepare(), LbmUnionExecStream::prepare(), LbmGeneratorExecStream::prepare(), LhxJoinExecStream::prepare(), LhxAggExecStream::prepare(), FtrsTableWriterExecStream::prepare(), FlatFileExecStreamImpl::prepare(), UncollectExecStream::prepare(), SortedAggExecStream::prepare(), SingleOutputExecStream::prepare(), ReshapeExecStream::prepare(), MockResourceExecStream::prepare(), MockProducerExecStream::prepare(), MergeExecStream::prepare(), prepare(), ConduitExecStream::prepare(), CollectExecStream::prepare(), CartesianJoinExecStream::prepare(), BernoulliSamplingExecStream::prepare(), BarrierExecStream::prepare(), CalcExecStream::prepare(), SortedAggExecStream::produce(), LbmBitOpExecStream::producePendingOutput(), LbmUnionExecStream::produceTuple(), LbmNormalizerExecStream::produceTuple(), LbmMinusExecStream::produceTuple(), LbmChopperExecStream::produceTuple(), LbmBitOpExecStream::produceTuple(), LbmBitOpExecStream::readInput(), LbmMinusExecStream::readMinuendInput(), and SingleOutputExecStream::setOutputBufAccessors().

bool ExecStream::isOpen [protected, inherited]

Whether this stream is currently open.

Note that this is not quite the opposite of the inherited ClosableObject.needsClose, since a stream needs to be closed before destruction if it has been prepared but never opened.

Definition at line 61 of file ExecStream.h.

Referenced by ExecStream::closeImpl(), ExecStream::ExecStream(), and ExecStream::open().

ExecStreamGraph* ExecStream::pGraph [protected, inherited]

Dataflow graph containing this stream.

Note that we don't use a weak_ptr for this because it needs to be accessed frequently during execution, and the extra locking overhead would be frivolous.

Definition at line 68 of file ExecStream.h.

Referenced by ExecStream::checkAbort(), ExecStream::ExecStream(), execute(), ExecStream::getGraph(), JavaTransformExecStream::open(), SingleInputExecStream::open(), MergeExecStream::open(), ExecStream::open(), open(), ConfluenceExecStream::open(), ExecStream::prepare(), CartesianJoinExecStream::prepare(), and LbmMinusExecStream::restartSubtrahends().

ExecStreamId ExecStream::id [protected, inherited]

Identifier for this stream; local to its containing graph.

Definition at line 73 of file ExecStream.h.

Referenced by ExecStream::getStreamId().

std::string ExecStream::name [protected, inherited]

Name of stream, as known by optimizer.

Reimplemented from TraceSource.

Definition at line 78 of file ExecStream.h.

Referenced by ExecStream::ExecStream(), ExecStream::getName(), FlatFileExecStreamImpl::open(), and ExecStream::setName().

SharedDynamicParamManager ExecStream::pDynamicParamManager [protected, inherited]

The dynamic parameter manager available to this stream.

(Obtained at prepare() time. Keep a shared pointer in case the stream is reassigned to another graph for execution; cf ExecStreamGraph::mergeFrom())

Definition at line 85 of file ExecStream.h.

Referenced by close(), SegBufferReaderExecStream::closeImpl(), LbmUnionExecStream::execute(), LbmSplicerExecStream::execute(), LbmGeneratorExecStream::execute(), LbmChopperExecStream::execute(), execute(), BarrierExecStream::execute(), LcsClusterReplaceExecStream::open(), LbmUnionExecStream::open(), LbmSplicerExecStream::open(), LbmGeneratorExecStream::open(), LbmBitOpExecStream::open(), BTreeSearchExecStream::open(), BTreeInsertExecStream::open(), SegBufferWriterExecStream::open(), SegBufferReaderExecStream::open(), NestedLoopJoinExecStream::open(), open(), ExecStream::prepare(), CalcExecStream::prepare(), NestedLoopJoinExecStream::processLeftInput(), LbmSearchExecStream::reachedTupleLimit(), ReshapeExecStream::readDynamicParams(), SegBufferWriterExecStream::readReaderRefCount(), BTreeSearchExecStream::readSearchKey(), BTreeSearchExecStream::readUpperBoundKey(), LbmSearchExecStream::setAdditionalKeys(), and LbmBitOpExecStream::writeStartRidParamValue().

SharedLogicalTxn ExecStream::pTxn [protected, inherited]

The transaction embracing the stream.

Obtained at open() time; but not released at close() time, to allow TableWriters to replay a txn. Keep a shared pointer in case the stream is reassigned to another graph for execution; cf ExecStreamGraph::mergeFrom())

Definition at line 94 of file ExecStream.h.

Referenced by FtrsTableWriterExecStream::commitSavepoint(), FtrsTableWriterExecStream::createSavepoint(), FtrsTableWriterExecStream::open(), ExecStream::open(), and FtrsTableWriterExecStream::rollbackSavepoint().

ExecStreamResourceQuantity ExecStream::resourceAllocation [protected, inherited]

Resource quantities currently allocated to this stream.

Definition at line 100 of file ExecStream.h.

Referenced by ExecStream::setResourceAllocation().

SharedCacheAccessor ExecStream::pQuotaAccessor [protected, inherited]

CacheAccessor used for quota tracking.

Definition at line 105 of file ExecStream.h.

Referenced by ExecStream::open(), ExecStream::prepare(), and ExecStream::setResourceAllocation().

SharedCacheAccessor ExecStream::pScratchQuotaAccessor [protected, inherited]

CacheAccessor used for scratch page quota tracking.

Definition at line 110 of file ExecStream.h.

Referenced by ExecStream::open(), ExecStream::prepare(), and ExecStream::setResourceAllocation().

bool ClosableObject::needsClose [protected, inherited]

Definition at line 44 of file ClosableObject.h.

Referenced by SegStreamAllocation::beginWrite(), ExecStreamGraphImpl::clear(), ClosableObject::ClosableObject(), ClosableObject::close(), FlatFileBuffer::open(), ExecStreamGraphImpl::open(), ExecStream::open(), and ClosableObject::~ClosableObject().

The documentation for this class was generated from the following files:
Generated on Mon Jun 22 04:00:29 2009 for Fennel by  doxygen 1.5.1