DoubleBufferExecStream Class Reference

DoubleBufferExecStream is an adapter for converting the output of an upstream BUFPROV_CONSUMER producer for use by a downstream BUFPROV_PRODUCER consumer, with support for the producer and consumer executing in parallel. More...

#include <DoubleBufferExecStream.h>

Inheritance diagram for DoubleBufferExecStream:

ConduitExecStream SingleInputExecStream SingleOutputExecStream ExecStream ExecStream ClosableObject TraceSource ErrorSource ClosableObject TraceSource ErrorSource List of all members.

Public Member Functions

virtual void prepare (DoubleBufferExecStreamParams const &params)
virtual void getResourceRequirements (ExecStreamResourceQuantity &minQuantity, ExecStreamResourceQuantity &optQuantity)
virtual void open (bool restart)
 Opens this stream, acquiring any resources needed in order to be able to fetch data.
virtual ExecStreamResult execute (ExecStreamQuantum const &quantum)
 Executes this stream.
virtual void closeImpl ()
 Implements ClosableObject.
virtual ExecStreamBufProvision getOutputBufProvision () const
 Queries the BufferProvision which this stream is capable of when producing tuples.
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 void setInputBufAccessors (std::vector< SharedExecStreamBufAccessor > const &inAccessors)
 Initializes the buffer accessors for inputs to this stream.
virtual void prepare (ConduitExecStreamParams const &params)
virtual void prepare (SingleInputExecStreamParams const &params)
virtual void prepare (ExecStreamParams const &params)
 Prepares this stream for execution.
virtual void prepare (SingleOutputExecStreamParams const &params)
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 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

void close ()
 Closes this object, releasing any unallocated resources.
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

ExecStreamResult precheckConduitBuffers ()
 Checks the state of the input and output buffers.

Protected Attributes

SharedExecStreamBufAccessor pInAccessor
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
SharedExecStreamBufAccessor pOutAccessor

Private Attributes

SegmentAccessor scratchAccessor
SegPageLock bufferLock1
SegPageLock bufferLock2
PBuffer pFrontBuffer
PBuffer pBackBuffer

Detailed Description

DoubleBufferExecStream is an adapter for converting the output of an upstream BUFPROV_CONSUMER producer for use by a downstream BUFPROV_PRODUCER consumer, with support for the producer and consumer executing in parallel.

The implementation works by allocating a pair of scratch buffers and cycling data through them via double buffering; the upstream producer writes its results into the back buffer, and the downstream consumer reads input from the front buffer.

Author:
John V. Sichi
Version:
Id
//open/dev/fennel/exec/DoubleBufferExecStream.h#5

Definition at line 53 of file DoubleBufferExecStream.h.

Member Function Documentation

void DoubleBufferExecStream::prepare ( DoubleBufferExecStreamParams const &  params  )  [virtual]

Definition at line 30 of file DoubleBufferExecStream.cpp.

References SegPageLock::accessSegment(), bufferLock1, bufferLock2, ConduitExecStream::prepare(), and scratchAccessor.

00032 {
00033     ConduitExecStream::prepare(params);
00034     scratchAccessor = params.scratchAccessor;
00035     bufferLock1.accessSegment(scratchAccessor);
00036     bufferLock2.accessSegment(scratchAccessor);
00037 }

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

Reimplemented from ExecStream.

Definition at line 39 of file DoubleBufferExecStream.cpp.

References ExecStream::getResourceRequirements(), and ExecStreamResourceQuantity::nCachePages.

00042 {
00043     ConduitExecStream::getResourceRequirements(minQuantity,optQuantity);
00044 
00045     // two scratch pages
00046     minQuantity.nCachePages += 2;
00047 
00048     optQuantity = minQuantity;
00049 }

void DoubleBufferExecStream::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 ConduitExecStream.

Definition at line 51 of file DoubleBufferExecStream.cpp.

References SegPageLock::allocatePage(), bufferLock1, bufferLock2, BUFPROV_CONSUMER, BUFPROV_PRODUCER, CachePage::getCache(), SegPageLock::getPage(), Cache::getPageSize(), CachePage::getWritableData(), SegPageLock::isLocked(), ConduitExecStream::open(), pBackBuffer, pFrontBuffer, SingleInputExecStream::pInAccessor, and SingleOutputExecStream::pOutAccessor.

00052 {
00053     ConduitExecStream::open(restart);
00054 
00055     assert(pInAccessor);
00056     assert(pInAccessor->getProvision() == BUFPROV_CONSUMER);
00057 
00058     assert(pOutAccessor);
00059     assert(pOutAccessor->getProvision() == BUFPROV_PRODUCER);
00060 
00061     if (!bufferLock1.isLocked()) {
00062         bufferLock1.allocatePage();
00063     }
00064 
00065     if (!bufferLock2.isLocked()) {
00066         bufferLock2.allocatePage();
00067     }
00068 
00069     // until the first swap, only the back buffer is active
00070     pFrontBuffer = NULL;
00071     pBackBuffer = bufferLock1.getPage().getWritableData();
00072 
00073     pInAccessor->provideBufferForProduction(
00074         pBackBuffer,
00075         pBackBuffer + bufferLock1.getPage().getCache().getPageSize(),
00076         false);
00077 }

ExecStreamResult DoubleBufferExecStream::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 79 of file DoubleBufferExecStream.cpp.

References bufferLock1, bufferLock2, EXECBUF_EMPTY, EXECBUF_EOS, EXECBUF_NONEMPTY, EXECBUF_OVERFLOW, EXECBUF_UNDERFLOW, EXECRC_BUF_OVERFLOW, EXECRC_BUF_UNDERFLOW, EXECRC_EOS, CachePage::getCache(), SegPageLock::getPage(), Cache::getPageSize(), CachePage::getWritableData(), pBackBuffer, pFrontBuffer, SingleInputExecStream::pInAccessor, and SingleOutputExecStream::pOutAccessor.

00080 {
00081     if (pFrontBuffer) {
00082         // both front and back buffers are active
00083         switch (pOutAccessor->getState()) {
00084         case EXECBUF_NONEMPTY:
00085         case EXECBUF_OVERFLOW:
00086             // consumer isn't done with front buffer, so we can't swap yet
00087             return EXECRC_BUF_OVERFLOW;
00088         case EXECBUF_UNDERFLOW:
00089         case EXECBUF_EMPTY:
00090             // consumer has finished reading, so fall through to check
00091             // on producer
00092             break;
00093         case EXECBUF_EOS:
00094             assert(pInAccessor->getState() == EXECBUF_EOS);
00095             return EXECRC_EOS;
00096         }
00097     }
00098     switch (pInAccessor->getState()) {
00099     case EXECBUF_NONEMPTY:
00100     case EXECBUF_OVERFLOW:
00101         // producer has given us data, so fall through to swap
00102         break;
00103     case EXECBUF_UNDERFLOW:
00104         // producer hasn't written yet
00105         return EXECRC_BUF_UNDERFLOW;
00106     case EXECBUF_EMPTY:
00107         pInAccessor->requestProduction();
00108         return EXECRC_BUF_UNDERFLOW;
00109     case EXECBUF_EOS:
00110         if (pOutAccessor->getState() == EXECBUF_EOS) {
00111             return EXECRC_EOS;
00112         } else {
00113             // done with back buffer now, but we're not really EOS until
00114             // front buffer is consumed too
00115             pBackBuffer = NULL;
00116             pOutAccessor->markEOS();
00117             return EXECRC_BUF_OVERFLOW;
00118         }
00119     default:
00120         permAssert(false);
00121     }
00122 
00123     if (!pFrontBuffer) {
00124         // from here on both front buffer and back buffer are active
00125         pFrontBuffer = bufferLock2.getPage().getWritableData();
00126     }
00127 
00128     std::swap(pFrontBuffer, pBackBuffer);
00129     pOutAccessor->provideBufferForConsumption(
00130         pFrontBuffer,
00131         pInAccessor->getConsumptionEnd());
00132     pInAccessor->consumeData(pInAccessor->getConsumptionEnd());
00133     if (pInAccessor->getState() == EXECBUF_EOS) {
00134         pBackBuffer = NULL;
00135         pOutAccessor->markEOS();
00136         return EXECRC_BUF_OVERFLOW;
00137     }
00138     pInAccessor->provideBufferForProduction(
00139         pBackBuffer,
00140         pBackBuffer + bufferLock1.getPage().getCache().getPageSize(),
00141         false);
00142     return EXECRC_BUF_UNDERFLOW;
00143 }

void DoubleBufferExecStream::closeImpl (  )  [virtual]

Implements ClosableObject.

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

Reimplemented from ExecStream.

Definition at line 145 of file DoubleBufferExecStream.cpp.

References bufferLock1, bufferLock2, ExecStream::closeImpl(), pBackBuffer, pFrontBuffer, and SegPageLock::unlock().

00146 {
00147     pFrontBuffer = NULL;
00148     pBackBuffer = NULL;
00149     bufferLock1.unlock();
00150     bufferLock2.unlock();
00151     ConduitExecStream::closeImpl();
00152 }

ExecStreamBufProvision DoubleBufferExecStream::getOutputBufProvision (  )  const [virtual]

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

Returns:
supported model; default is BUFPROV_NONE

Reimplemented from SingleOutputExecStream.

Definition at line 154 of file DoubleBufferExecStream.cpp.

References BUFPROV_PRODUCER.

00155 {
00156     return BUFPROV_PRODUCER;
00157 }

ExecStreamBufProvision DoubleBufferExecStream::getInputBufProvision (  )  const [virtual]

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

Returns:
required model; default is BUFPROV_NONE

Reimplemented from SingleInputExecStream.

Definition at line 159 of file DoubleBufferExecStream.cpp.

References BUFPROV_CONSUMER.

00160 {
00161     return BUFPROV_CONSUMER;
00162 }

ExecStreamResult ConduitExecStream::precheckConduitBuffers (  )  [protected, inherited]

Checks the state of the input and output buffers.

If input empty, requests production. If input EOS, propagates that to output buffer. If output full, returns EXECRC_OVERFLOW.

Returns:
result of precheck; anything but EXECRC_YIELD indicates that execution should terminate immediately with returned code

Definition at line 61 of file ConduitExecStream.cpp.

References EXECBUF_EMPTY, EXECBUF_EOS, EXECBUF_NONEMPTY, EXECBUF_OVERFLOW, EXECBUF_UNDERFLOW, EXECRC_BUF_OVERFLOW, EXECRC_BUF_UNDERFLOW, EXECRC_EOS, EXECRC_YIELD, SingleInputExecStream::pInAccessor, and SingleOutputExecStream::pOutAccessor.

Referenced by ExternalSortExecStreamImpl::execute(), FtrsTableWriterExecStream::execute(), BTreeSearchUniqueExecStream::execute(), BTreeSearchExecStream::execute(), BTreeInsertExecStream::execute(), UncollectExecStream::execute(), SortedAggExecStream::execute(), ReshapeExecStream::execute(), CopyExecStream::execute(), CollectExecStream::execute(), BernoulliSamplingExecStream::execute(), and CalcExecStream::execute().

00062 {
00063     switch (pInAccessor->getState()) {
00064     case EXECBUF_EMPTY:
00065         pInAccessor->requestProduction();
00066         return EXECRC_BUF_UNDERFLOW;
00067     case EXECBUF_UNDERFLOW:
00068         return EXECRC_BUF_UNDERFLOW;
00069     case EXECBUF_EOS:
00070         pOutAccessor->markEOS();
00071         return EXECRC_EOS;
00072     case EXECBUF_NONEMPTY:
00073     case EXECBUF_OVERFLOW:
00074         break;
00075     default:
00076         permAssert(false);
00077     }
00078     if (pOutAccessor->getState() == EXECBUF_OVERFLOW) {
00079         return EXECRC_BUF_OVERFLOW;
00080     }
00081     return EXECRC_YIELD;
00082 }

void ConduitExecStream::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

Reimplemented from SingleInputExecStream.

Definition at line 36 of file ConduitExecStream.cpp.

References SingleOutputExecStream::setOutputBufAccessors().

00038 {
00039     SingleOutputExecStream::setOutputBufAccessors(outAccessors);
00040 }

void ConduitExecStream::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 SingleInputExecStream.

Definition at line 30 of file ConduitExecStream.cpp.

References SingleInputExecStream::setInputBufAccessors().

00032 {
00033     SingleInputExecStream::setInputBufAccessors(inAccessors);
00034 }

void ConduitExecStream::prepare ( ConduitExecStreamParams const &  params  )  [virtual, inherited]

Definition at line 42 of file ConduitExecStream.cpp.

References SingleInputExecStream::pInAccessor, SingleOutputExecStream::pOutAccessor, SingleOutputExecStream::prepare(), and SingleInputExecStream::prepare().

Referenced by ExternalSortExecStreamImpl::prepare(), LcsClusterAppendExecStream::prepare(), LbmNormalizerExecStream::prepare(), LhxAggExecStream::prepare(), FtrsTableWriterExecStream::prepare(), BTreeSearchExecStream::prepare(), BTreeInsertExecStream::prepare(), UncollectExecStream::prepare(), SortedAggExecStream::prepare(), SegBufferReaderExecStream::prepare(), SegBufferExecStream::prepare(), ScratchBufferExecStream::prepare(), ReshapeExecStream::prepare(), prepare(), CopyExecStream::prepare(), CollectExecStream::prepare(), BernoulliSamplingExecStream::prepare(), and CalcExecStream::prepare().

00043 {
00044     SingleInputExecStream::prepare(params);
00045 
00046     if (params.outputTupleDesc.empty()) {
00047         pOutAccessor->setTupleShape(
00048             pInAccessor->getTupleDesc(),
00049             pInAccessor->getTupleFormat());
00050     }
00051 
00052     SingleOutputExecStream::prepare(params);
00053 }

void SingleInputExecStream::prepare ( SingleInputExecStreamParams const &  params  )  [virtual, inherited]

Definition at line 44 of file SingleInputExecStream.cpp.

References SingleInputExecStream::getInputBufProvision(), SingleInputExecStream::pInAccessor, and ExecStream::prepare().

Referenced by JavaSinkExecStream::prepare(), MockConsumerExecStream::prepare(), DiffluenceExecStream::prepare(), and ConduitExecStream::prepare().

00045 {
00046     ExecStream::prepare(params);
00047 
00048     assert(pInAccessor);
00049     assert(pInAccessor->getProvision() == getInputBufProvision());
00050 }

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 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 }

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(), CorrelationJoinExecStream::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 getResourceRequirements().

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

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 ClosableObject::close (  )  [inherited]

Closes this object, releasing any unallocated resources.

Reimplemented in CollectExecStream, CorrelationJoinExecStream, LcsClusterAppendExecStream, and LcsClusterReplaceExecStream.

Definition at line 39 of file ClosableObject.cpp.

References ClosableObject::closeImpl(), and ClosableObject::needsClose.

Referenced by CacheImpl< PageT, VictimPolicyT >::allocatePages(), LcsRowScanBaseExecStream::closeImpl(), ExecStreamGraphImpl::closeImpl(), FlatFileBuffer::open(), ClosableObjectDestructor::operator()(), and Segment::~Segment().

00040 {
00041     if (!needsClose) {
00042         return;
00043     }
00044     needsClose = false;
00045     closeImpl();
00046 }

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

SegmentAccessor DoubleBufferExecStream::scratchAccessor [private]

Definition at line 56 of file DoubleBufferExecStream.h.

Referenced by prepare().

SegPageLock DoubleBufferExecStream::bufferLock1 [private]

Definition at line 57 of file DoubleBufferExecStream.h.

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

SegPageLock DoubleBufferExecStream::bufferLock2 [private]

Definition at line 58 of file DoubleBufferExecStream.h.

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

PBuffer DoubleBufferExecStream::pFrontBuffer [private]

Definition at line 59 of file DoubleBufferExecStream.h.

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

PBuffer DoubleBufferExecStream::pBackBuffer [private]

Definition at line 59 of file DoubleBufferExecStream.h.

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

SharedExecStreamBufAccessor SingleInputExecStream::pInAccessor [protected, inherited]

Definition at line 51 of file SingleInputExecStream.h.

Referenced by SortedAggExecStream::compareGroupByKeys(), ExternalSortExecStreamImpl::computeFirstResult(), ExternalSortExecStreamImpl::execute(), LbmSplicerExecStream::execute(), FtrsTableWriterExecStream::execute(), BTreeSortExecStream::execute(), BTreeSearchUniqueExecStream::execute(), BTreeSearchExecStream::execute(), BTreePrefetchSearchExecStream::execute(), BTreeInsertExecStream::execute(), JavaSinkExecStream::execute(), UncollectExecStream::execute(), SplitterExecStream::execute(), SortedAggExecStream::execute(), SegBufferWriterExecStream::execute(), SegBufferReaderExecStream::execute(), SegBufferExecStream::execute(), ScratchBufferExecStream::execute(), ReshapeExecStream::execute(), MockConsumerExecStream::execute(), execute(), CopyExecStream::execute(), CollectExecStream::execute(), BernoulliSamplingExecStream::execute(), CalcExecStream::execute(), BTreePrefetchSearchExecStream::getNextPageForPrefetch(), LcsClusterReplaceExecStream::getTupleForLoad(), LcsClusterAppendExecStream::getTupleForLoad(), LbmSplicerExecStream::getValidatedTuple(), LcsClusterReplaceExecStream::initTupleLoadParams(), BTreeSearchExecStream::innerSearchLoop(), BTreePrefetchSearchExecStream::innerSearchLoop(), LcsClusterReplaceExecStream::open(), LbmNormalizerExecStream::open(), SingleInputExecStream::open(), SegBufferWriterExecStream::open(), SegBufferExecStream::open(), ScratchBufferExecStream::open(), MockConsumerExecStream::open(), open(), CollectExecStream::open(), LcsClusterAppendExecStream::postProcessTuple(), ConduitExecStream::precheckConduitBuffers(), ExternalSortExecStreamImpl::prepare(), LcsClusterAppendExecStream::prepare(), LbmSplicerExecStream::prepare(), LbmNormalizerExecStream::prepare(), BTreeSearchExecStream::prepare(), BTreeInsertExecStream::prepare(), UncollectExecStream::prepare(), SortedAggExecStream::prepare(), SingleInputExecStream::prepare(), SegBufferReaderExecStream::prepare(), ReshapeExecStream::prepare(), DiffluenceExecStream::prepare(), ConduitExecStream::prepare(), CollectExecStream::prepare(), BernoulliSamplingExecStream::prepare(), CalcExecStream::prepare(), SortedAggExecStream::produce(), BTreeSearchExecStream::readSearchKey(), LhxAggExecStream::setAggComputers(), LhxAggExecStream::setHashInfo(), SingleInputExecStream::setInputBufAccessors(), and JavaSinkExecStream::stuffByteBuffer().

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(), CorrelationJoinExecStream::execute(), ExecStream::getGraph(), JavaTransformExecStream::open(), SingleInputExecStream::open(), MergeExecStream::open(), ExecStream::open(), CorrelationJoinExecStream::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 CorrelationJoinExecStream::close(), SegBufferReaderExecStream::closeImpl(), LbmUnionExecStream::execute(), LbmSplicerExecStream::execute(), LbmGeneratorExecStream::execute(), LbmChopperExecStream::execute(), CorrelationJoinExecStream::execute(), BarrierExecStream::execute(), LcsClusterReplaceExecStream::open(), LbmUnionExecStream::open(), LbmSplicerExecStream::open(), LbmGeneratorExecStream::open(), LbmBitOpExecStream::open(), BTreeSearchExecStream::open(), BTreeInsertExecStream::open(), SegBufferWriterExecStream::open(), SegBufferReaderExecStream::open(), NestedLoopJoinExecStream::open(), CorrelationJoinExecStream::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().

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(), execute(), CorrelationJoinExecStream::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(), 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(), CorrelationJoinExecStream::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().

The documentation for this class was generated from the following files:
Generated on Mon Jun 22 04:00:30 2009 for Fennel by  doxygen 1.5.1