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Comparing UserCode/grimes/L1Menu/src/ReducedMenuSample.cpp (file contents):
Revision 1.7 by grimes, Thu Jun 6 15:05:04 2013 UTC vs.
Revision 1.16 by grimes, Thu Jul 4 00:37:53 2013 UTC

#	Line 2 | Line 2
2
3		#include <vector>
4		#include <stdexcept>
5	<	#include <fstream>
5	>	#include <fcntl.h>
6		#include <algorithm>
7	<	#include "l1menu/IReducedEvent.h"
7	>	#include <iostream>
8	>	#include <sstream>
9	>	#include "l1menu/ReducedEvent.h"
10		#include "l1menu/MenuSample.h"
11		#include "l1menu/TriggerMenu.h"
12		#include "l1menu/ITrigger.h"
13	<	#include "l1menu/tools.h"
13	>	#include "l1menu/ICachedTrigger.h"
14	>	#include "l1menu/L1TriggerDPGEvent.h"
15	>	#include "l1menu/IEvent.h"
16	>	#include "l1menu/IMenuRate.h"
17	>	#include "l1menu/ITriggerRate.h"
18	>	#include "l1menu/tools/tools.h"
19	>	#include "l1menu/implementation/MenuRateImplementation.h"
20		#include "protobuf/l1menu.pb.h"
21	+	#include <google/protobuf/io/zero_copy_stream_impl.h>
22	+	#include <google/protobuf/io/gzip_stream.h>
23
24		namespace // unnamed namespace
25		{
26	<	class ReducedEventImplementation : public l1menu::IReducedEvent
26	>	/** @brief Sentry that closes a Unix file descriptor when it goes out of scope.
27	>	* @author Mark Grimes (mark.grimes@bristol.ac.uk)
28	>	* @date 07/Jun/2013
29	>	*/
30	>	class UnixFileSentry
31		{
32		public:
33	<	virtual ~ReducedEventImplementation() {}
34	<	virtual float parameterValue( size_t parameterNumber ) const {  return pProtobufEvent->threshold(parameterNumber); }
35	<	virtual float weight() const { if( pProtobufEvent->has_weight() ) return pProtobufEvent->weight(); else return 1; }
36	<	void setWeight( float newWeight ) { pProtobufEvent->set_weight(newWeight); }
23	<	l1menuprotobuf::Event* pProtobufEvent;
33	>	UnixFileSentry( int fileDescriptor ) : fileDescriptor_(fileDescriptor) {}
34	>	~UnixFileSentry() { close(fileDescriptor_); }
35	>	private:
36	>	int fileDescriptor_;
37		};
38	+
39	+	/** @brief An object that stores pointers to trigger parameters to avoid costly string comparisons.
40	+	*
41	+	* @author Mark Grimes (mark.grimes@bristol.ac.uk)
42	+	* @date 26/Jun/2013
43	+	*/
44	+	class CachedTriggerImplementation : public l1menu::ICachedTrigger
45	+	{
46	+	public:
47	+	CachedTriggerImplementation( const l1menu::ReducedMenuSample& sample, const l1menu::ITrigger& trigger )
48	+	{
49	+	const auto& parameterIdentifiers=sample.getTriggerParameterIdentifiers(trigger);
50	+
51	+	for( const auto& identifier : parameterIdentifiers )
52	+	{
53	+	identifiers_.push_back( std::make_pair( identifier.second, &trigger.parameter(identifier.first) ) );
54	+	}
55	+	}
56	+	virtual bool apply( const l1menu::IEvent& event )
57	+	{
58	+	// Not happy using a static_cast, but this method is called in many, many loops.
59	+	// I should probably find out how much faster this is than a dynamic_cast, maybe
60	+	// it's not even worth it. Anyway, I'm banking that no one will ever pass an
61	+	// event that wasn't created with the same sample that this proxy was created
62	+	// with.
63	+	const l1menu::ReducedEvent* pEvent=static_cast<const l1menu::ReducedEvent*>(&event);
64	+	for( const auto& identifier : identifiers_ )
65	+	{
66	+	if( pEvent->parameterValue(identifier.first) < *identifier.second ) return false;
67	+	}
68	+
69	+	// If control got this far then all of the thresholds passed, and
70	+	// I can pass the event.
71	+	return true;
72	+	}
73	+	protected:
74	+	std::vector< std::pair<l1menu::ReducedEvent::ParameterID,const float*> > identifiers_;
75	+	}; // end of class ReducedSampleCachedTrigger
76	+
77	+	float sumWeights( const l1menuprotobuf::Run& run )
78	+	{
79	+	float returnValue=0;
80	+	for( const auto& event : run.event() )
81	+	{
82	+	if( event.has_weight() ) returnValue+=event.weight();
83	+	else returnValue+=1;
84	+	}
85	+	return returnValue;
86	+	}
87		}
88
89		namespace l1menu
#	Line 36 | Line 98 | namespace l1menu
98		private:
99		l1menu::TriggerMenu mutableTriggerMenu_;
100		public:
101	<	ReducedMenuSamplePrivateMembers( const l1menu::TriggerMenu& newTriggerMenu );
102	<	ReducedMenuSamplePrivateMembers( const std::string& filename );
103	<	void copyMenuToProtobufSample();
104	<	::ReducedEventImplementation event;
105	<	const l1menu::TriggerMenu& triggerMenu;
106	<	l1menuprotobuf::Sample protobufSample;
101	>	ReducedMenuSamplePrivateMembers( const l1menu::ReducedMenuSample& thisObject, const l1menu::TriggerMenu& newTriggerMenu );
102	>	ReducedMenuSamplePrivateMembers( const l1menu::ReducedMenuSample& thisObject, const std::string& filename );
103	>	//void copyMenuToProtobufSample();
104	>	l1menu::ReducedEvent event;
105	>	const l1menu::TriggerMenu& triggerMenu; // External const access to mutableTriggerMenu_
106	>	float eventRate;
107	>	float sumOfWeights;
108	>	l1menuprotobuf::SampleHeader protobufSampleHeader;
109	>	// Protobuf doesn't implement move semantics so I'll use pointers
110	>	std::vector<std::unique_ptr<l1menuprotobuf::Run> > protobufRuns;
111	>	const static int EVENTS_PER_RUN;
112	>	const static char PROTOBUF_MESSAGE_DELIMETER;
113	>	const static std::string FILE_FORMAT_MAGIC_NUMBER;
114		};
115	+
116	+	const int ReducedMenuSamplePrivateMembers::EVENTS_PER_RUN=20000;
117	+	const char ReducedMenuSamplePrivateMembers::PROTOBUF_MESSAGE_DELIMETER='\n';
118	+	const std::string ReducedMenuSamplePrivateMembers::FILE_FORMAT_MAGIC_NUMBER="l1menuReducedMenuSample";
119		}
120
121	<	l1menu::ReducedMenuSamplePrivateMembers::ReducedMenuSamplePrivateMembers( const l1menu::TriggerMenu& newTriggerMenu )
122	<	: mutableTriggerMenu_( newTriggerMenu ), triggerMenu( mutableTriggerMenu_ )
121	>	l1menu::ReducedMenuSamplePrivateMembers::ReducedMenuSamplePrivateMembers( const l1menu::ReducedMenuSample& thisObject, const l1menu::TriggerMenu& newTriggerMenu )
122	>	: mutableTriggerMenu_( newTriggerMenu ), event(thisObject), triggerMenu( mutableTriggerMenu_ ), eventRate(1), sumOfWeights(0)
123		{
124		GOOGLE_PROTOBUF_VERIFY_VERSION;
125
126		// I need to copy the details of the trigger menu into the protobuf storage.
127	<	// This means I'm holding a duplicate, but I need it to write the Sample message
128	<	// so I might as well do it now.
127	>	// This means I'm holding a duplicate, but I need it to write the sample to a
128	>	// protobuf file, so I might as well do it now.
129		for( size_t triggerNumber=0; triggerNumber<triggerMenu.numberOfTriggers(); ++triggerNumber )
130		{
131		const l1menu::ITrigger& trigger=triggerMenu.getTrigger(triggerNumber);
132
133	<	l1menuprotobuf::Trigger* pProtobufTrigger=protobufSample.add_trigger();
133	>	l1menuprotobuf::Trigger* pProtobufTrigger=protobufSampleHeader.add_trigger();
134		pProtobufTrigger->set_name( trigger.name() );
135		pProtobufTrigger->set_version( trigger.version() );
136
#	Line 74 | Line 147 | l1menu::ReducedMenuSamplePrivateMembers:
147
148		// Make a note of the names of the parameters that are recorded for each event. For this
149		// I'm just recording the parameters that refer to the thresholds.
150	<	const auto thresholdNames=l1menu::getThresholdNames(trigger);
151	<	for( const auto& thresholdName : thresholdNames ) pProtobufTrigger->add_threshold(thresholdName);
150	>	const auto thresholdNames=l1menu::tools::getThresholdNames(trigger);
151	>	for( const auto& thresholdName : thresholdNames ) pProtobufTrigger->add_varying_parameter(thresholdName);
152
153		} // end of loop over triggers
154
155	+	// Always make sure there is at least one Run ready to be added to
156	+	std::unique_ptr<l1menuprotobuf::Run> pNewRun( new l1menuprotobuf::Run );
157	+	protobufRuns.push_back( std::move( pNewRun ) );
158	+
159		}
160
161	<	l1menu::ReducedMenuSamplePrivateMembers::ReducedMenuSamplePrivateMembers( const std::string& filename )
162	<	: triggerMenu(mutableTriggerMenu_)
161	>	l1menu::ReducedMenuSamplePrivateMembers::ReducedMenuSamplePrivateMembers( const l1menu::ReducedMenuSample& thisObject, const std::string& filename )
162	>	: event(thisObject), triggerMenu(mutableTriggerMenu_), eventRate(1), sumOfWeights(0)
163		{
164		GOOGLE_PROTOBUF_VERIFY_VERSION;
165
166	<	{ // new block to limit scope of variables, so that the file is closed immediately after reading
167	<	std::ifstream inputFile( filename );
168	<	protobufSample.ParseFromIstream( &inputFile );
166	>	// Open the file with read ability
167	>	int fileDescriptor = open( filename.c_str(), O_RDONLY );
168	>	if( fileDescriptor==0 ) throw std::runtime_error( "ReducedMenuSample initialise from file - couldn't open file" );
169	>	::UnixFileSentry fileSentry( fileDescriptor ); // Use this as an exception safe way of closing the input file
170	>	google::protobuf::io::FileInputStream fileInput( fileDescriptor );
171	>
172	>	// First read the magic number at the start of the file and make sure it
173	>	// matches what I expect. This is uncompressed so I'll wrap it in a block
174	>	// to make sure the CodedInputStream is destructed before creating a new
175	>	// one with gzip input.
176	>	{
177	>	google::protobuf::io::CodedInputStream codedInput( &fileInput );
178	>
179	>	// As a read buffer, I'll create a string the correct size (filled with an arbitrary
180	>	// character) and read straight into that.
181	>	std::string readMagicNumber;
182	>	if( !codedInput.ReadString( &readMagicNumber, FILE_FORMAT_MAGIC_NUMBER.size() ) ) throw std::runtime_error( "ReducedMenuSample initialise from file - error reading magic number" );
183	>	if( readMagicNumber!=FILE_FORMAT_MAGIC_NUMBER ) throw std::runtime_error( "ReducedMenuSample - tried to initialise with a file that is not the correct format" );
184	>
185	>	google::protobuf::uint32 fileformatVersion;
186	>	if( !codedInput.ReadVarint32( &fileformatVersion ) ) throw std::runtime_error( "ReducedMenuSample initialise from file - error reading file format version" );
187	>	// So far I only have (and ever expect to have) one version of the file
188	>	// format, imaginatively versioned "1". You never know though...
189	>	if( fileformatVersion>1 ) std::cerr << "Warning: Attempting to read a ReducedMenuSample with version " << fileformatVersion << " with code that only knows up to version 1." << std::endl;
190		}
191
192	+	google::protobuf::io::GzipInputStream gzipInput( &fileInput );
193	+	google::protobuf::io::CodedInputStream codedInput( &gzipInput );
194
195	<	// I have all of the information in the protobuf Sample, but I also need the trigger information
195	>	// Disable warnings on this input stream (second parameter, -1). The
196	>	// first parameter is the default. I'll change this if necessary in
197	>	// the loop later.
198	>	size_t totalBytesLimit=67108864;
199	>	codedInput.SetTotalBytesLimit( totalBytesLimit, -1 );
200	>
201	>	google::protobuf::uint64 messageSize;
202	>
203	>	// Read the size of the header message
204	>	if( !codedInput.ReadVarint64( &messageSize ) ) throw std::runtime_error( "ReducedMenuSample initialise from file - error reading message size for header" );
205	>	google::protobuf::io::CodedInputStream::Limit readLimit=codedInput.PushLimit(messageSize);
206	>	if( !protobufSampleHeader.ParseFromCodedStream( &codedInput ) ) throw std::runtime_error( "ReducedMenuSample initialise from file - some unknown error while reading header" );
207	>	codedInput.PopLimit(readLimit);
208	>
209	>	// Keep looping until there is nothing more to be read from the file.
210	>	while( codedInput.ReadVarint64( &messageSize ) )
211	>	{
212	>	readLimit=codedInput.PushLimit(messageSize);
213	>
214	>	// Make sure the CodedInputStream doesn't refuse to read the message because it's
215	>	// read too much already. I'll also add an arbitrary 50 on to always make sure
216	>	// I can read the next messageSize if there is one.
217	>	if( gzipInput.ByteCount()+messageSize+50 > totalBytesLimit )
218	>	{
219	>	totalBytesLimit+=messageSize*5; // Might as well set it a little higher than necessary while I'm at it.
220	>	codedInput.SetTotalBytesLimit( totalBytesLimit, -1 );
221	>	}
222	>	std::unique_ptr<l1menuprotobuf::Run> pNewRun( new l1menuprotobuf::Run );
223	>	if( !pNewRun->ParseFromCodedStream( &codedInput ) ) throw std::runtime_error( "ReducedMenuSample initialise from file - some unknown error while reading run" );
224	>	protobufRuns.push_back( std::move( pNewRun ) );
225	>
226	>	codedInput.PopLimit(readLimit);
227	>	}
228	>
229	>
230	>	// Always make sure there is at least one Run ready to be added to. Later
231	>	// code assumes there is already a run there.
232	>	if( protobufRuns.empty() )
233	>	{
234	>	std::unique_ptr<l1menuprotobuf::Run> pNewRun( new l1menuprotobuf::Run );
235	>	protobufRuns.push_back( std::move( pNewRun ) );
236	>	}
237	>
238	>	// Count up the sum of the weights of all events
239	>	for( const auto& pRun : protobufRuns )
240	>	{
241	>	sumOfWeights+=sumWeights( *pRun );
242	>	}
243	>
244	>	// I have all of the information in the protobuf members, but I also need the trigger information
245		// in the form of l1menu::TriggerMenu. Copy out the required information.
246	<	for( int triggerNumber=0; triggerNumber<protobufSample.trigger_size(); ++triggerNumber )
246	>	for( int triggerNumber=0; triggerNumber<protobufSampleHeader.trigger_size(); ++triggerNumber )
247		{
248	<	const l1menuprotobuf::Trigger& inputTrigger=protobufSample.trigger(triggerNumber);
248	>	const l1menuprotobuf::Trigger& inputTrigger=protobufSampleHeader.trigger(triggerNumber);
249
250		mutableTriggerMenu_.addTrigger( inputTrigger.name(), inputTrigger.version() );
251		// Get a reference to the trigger I just created
#	Line 116 | Line 265 | l1menu::ReducedMenuSamplePrivateMembers:
265		}
266
267		l1menu::ReducedMenuSample::ReducedMenuSample( const l1menu::MenuSample& originalSample, const l1menu::TriggerMenu& triggerMenu )
268	<	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( triggerMenu ) )
268	>	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( *this, triggerMenu ) )
269		{
270		addSample( originalSample );
271		}
272
273		l1menu::ReducedMenuSample::ReducedMenuSample( const l1menu::TriggerMenu& triggerMenu )
274	<	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( triggerMenu ) )
274	>	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( *this, triggerMenu ) )
275		{
276		// No operation besides the initialiser list
277		}
278
279	+	l1menu::ReducedMenuSample::ReducedMenuSample( const std::string& filename )
280	+	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( *this, filename ) )
281	+	{
282	+	// No operation except the initialiser list
283	+	}
284	+
285		l1menu::ReducedMenuSample::~ReducedMenuSample()
286		{
287		// No operation. Just need one defined otherwise the default one messes up
#	Line 136 | Line 291 | l1menu::ReducedMenuSample::~ReducedMenuS
291
292		void l1menu::ReducedMenuSample::addSample( const l1menu::MenuSample& originalSample )
293		{
294	+	l1menuprotobuf::Run* pCurrentRun=pImple_->protobufRuns.back().get();
295	+
296		for( size_t eventNumber=0; eventNumber<originalSample.numberOfEvents(); ++eventNumber )
297		{
298	<	const l1menu::IEvent& event=originalSample.getEvent( eventNumber );
299	<	l1menuprotobuf::Event* pProtobufEvent=pImple_->protobufSample.add_event();
298	>	// Split the events up into groups in arbitrary numbers. This is to get around
299	>	// a protobuf aversion to long messages.
300	>	if( pCurrentRun->event_size() >= pImple_->EVENTS_PER_RUN )
301	>	{
302	>	// Gone over the arbitrary limit, so create a new protobuf Run and start
303	>	// using that instead.
304	>	std::unique_ptr<l1menuprotobuf::Run> pNewRun( new l1menuprotobuf::Run );
305	>	pImple_->protobufRuns.push_back( std::move( pNewRun ) );
306	>	pCurrentRun=pImple_->protobufRuns.back().get();
307	>	}
308	>
309	>	const l1menu::L1TriggerDPGEvent& event=originalSample.getFullEvent( eventNumber );
310	>	l1menuprotobuf::Event* pProtobufEvent=pCurrentRun->add_event();
311	>	if( event.weight()!=1 ) pProtobufEvent->set_weight( event.weight() );
312
313		// Loop over all of the triggers
314		for( size_t triggerNumber=0; triggerNumber<pImple_->triggerMenu.numberOfTriggers(); ++triggerNumber )
315		{
316		std::unique_ptr<l1menu::ITrigger> pTrigger=pImple_->triggerMenu.getTriggerCopy(triggerNumber);
317	<	std::vector<std::string> thresholdNames=getThresholdNames(*pTrigger);
317	>	std::vector<std::string> thresholdNames=l1menu::tools::getThresholdNames(*pTrigger);
318
319		try
320		{
321	<	setTriggerThresholdsAsTightAsPossible( event, *pTrigger, 0.001 );
321	>	l1menu::tools::setTriggerThresholdsAsTightAsPossible( event, *pTrigger, 0.001 );
322		// Set all of the parameters to match the thresholds in the trigger
323		for( const auto& thresholdName : thresholdNames )
324		{
#	Line 166 | Line 335 | void l1menu::ReducedMenuSample::addSampl
335
336		} // end of loop over triggers
337
338	+	pImple_->sumOfWeights+=event.weight();
339		} // end of loop over events
340		}
341
172	–	l1menu::ReducedMenuSample::ReducedMenuSample( const std::string& filename )
173	–	: pImple_( new l1menu::ReducedMenuSamplePrivateMembers( filename ) )
174	–	{
175	–	// No operation except the initialiser list
176	–	}
177	–
342		void l1menu::ReducedMenuSample::saveToFile( const std::string& filename ) const
343		{
344	<	std::ofstream outputFile( filename );
345	<	pImple_->protobufSample.SerializeToOstream( &outputFile );
346	<	}
344	>	// Open the file. Parameters are filename, write ability and create, rw-r--r-- permissions.
345	>	int fileDescriptor = open( filename.c_str(), O_WRONLY | O_CREAT, 0644 );
346	>	if( fileDescriptor==0 ) throw std::runtime_error( "ReducedMenuSample save to file - couldn't open file" );
347	>	::UnixFileSentry fileSentry( fileDescriptor ); // Use this as an exception safe way of closing the output file
348	>
349	>	// Setup the protobuf file handlers
350	>	google::protobuf::io::FileOutputStream fileOutput( fileDescriptor );
351	>
352	>	// I want the magic number and file format identifier uncompressed, so
353	>	// I'll write those before switching to using gzipped output.
354	>	{ // Block to make sure codedOutput is destructed before the gzip version is created
355	>	google::protobuf::io::CodedOutputStream codedOutput( &fileOutput );
356	>
357	>	// Write a magic number at the start of all files
358	>	codedOutput.WriteString( pImple_->FILE_FORMAT_MAGIC_NUMBER );
359	>	// Write an integer that specifies what version of the file format I'm using. I
360	>	// have no intention of changing the format but I might as well keep the option
361	>	// open.
362	>	codedOutput.WriteVarint32( 1 );
363	>	}
364	>
365	>	google::protobuf::io::GzipOutputStream gzipOutput( &fileOutput );
366	>	google::protobuf::io::CodedOutputStream codedOutput( &gzipOutput );
367	>
368	>	// Write the size of the header message into the file...
369	>	codedOutput.WriteVarint64( pImple_->protobufSampleHeader.ByteSize() );
370	>	// ...and then write the header
371	>	pImple_->protobufSampleHeader.SerializeToCodedStream( &codedOutput );
372	>
373	>	// Now go through each of the runs and do the same for those
374	>	for( const auto& pRun : pImple_->protobufRuns )
375	>	{
376	>	codedOutput.WriteVarint64( pRun->ByteSize() );
377	>	pRun->SerializeToCodedStream( &codedOutput );
378	>	}
379
184	–	size_t l1menu::ReducedMenuSample::numberOfEvents() const
185	–	{
186	–	return pImple_->protobufSample.event_size();
380		}
381
382	<	const l1menu::IReducedEvent& l1menu::ReducedMenuSample::getEvent( size_t eventNumber ) const
382	>	size_t l1menu::ReducedMenuSample::numberOfEvents() const
383		{
384	<	pImple_->event.pProtobufEvent=pImple_->protobufSample.mutable_event(eventNumber);
385	<	return pImple_->event;
384	>	size_t numberOfEvents=0;
385	>	for( const auto& pRun : pImple_->protobufRuns ) numberOfEvents+=pRun->event_size();
386	>	return numberOfEvents;
387		}
388
389		const l1menu::TriggerMenu& l1menu::ReducedMenuSample::getTriggerMenu() const
#	Line 220 | Line 414 | bool l1menu::ReducedMenuSample::contains
414		// eta cuts or whatever.
415		// I don't care if the thresholds don't match because that's what's stored in the
416		// ReducedMenuSample.
417	<	std::vector<std::string> parameterNames=getNonThresholdParameterNames( trigger );
417	>	std::vector<std::string> parameterNames=l1menu::tools::getNonThresholdParameterNames( trigger );
418		bool allParametersMatch=true;
419		for( const auto& parameterName : parameterNames )
420		{
#	Line 266 | Line 460 | const std::map<std::string,size_t> l1men
460		// ReducedMenuSample.
461		if( triggerWasFound ) // Trigger can still fail, but no point doing this check if it already has
462		{
463	<	std::vector<std::string> parameterNames=getNonThresholdParameterNames( trigger );
463	>	std::vector<std::string> parameterNames=l1menu::tools::getNonThresholdParameterNames( trigger );
464		for( const auto& parameterName : parameterNames )
465		{
466		if( trigger.parameter(parameterName)!=triggerInMenu.parameter(parameterName) ) triggerWasFound=false;
467		}
468		}
469
470	<	std::vector<std::string> thresholdNames=l1menu::getThresholdNames(triggerInMenu);
470	>	std::vector<std::string> thresholdNames=l1menu::tools::getThresholdNames(triggerInMenu);
471		if( triggerWasFound )
472		{
473		for( const auto& thresholdName : thresholdNames )
#	Line 290 | Line 484 | const std::map<std::string,size_t> l1men
484		// (I guess - it would be a pretty pointless trigger though). To indicate the
485		// difference between that and a trigger that wasn't found I'll respectively
486		// return the empty vector or throw an exception.
487	<	if( !triggerWasFound ) throw std::runtime_error( "l1menu::ReducedMenuSample::getTriggerParameterIdentifiers() called for a trigger that was not used to create the sample" );
487	>	if( !triggerWasFound ) throw std::runtime_error( "l1menu::ReducedMenuSample::getTriggerParameterIdentifiers() called for a trigger that was not used to create the sample - "+trigger.name() );
488
489		return returnValue;
490		}
491	+
492	+	const l1menu::IEvent& l1menu::ReducedMenuSample::getEvent( size_t eventNumber ) const
493	+	{
494	+	for( const auto& pRun : pImple_->protobufRuns )
495	+	{
496	+	if( eventNumber<static_cast<size_t>(pRun->event_size()) )
497	+	{
498	+	pImple_->event.pProtobufEvent_=pRun->mutable_event(eventNumber);
499	+	return pImple_->event;
500	+	}
501	+	// Event must be in a later run, so reduce the number by how many events
502	+	// were in this run and look again.
503	+	eventNumber-=pRun->event_size();
504	+	}
505	+
506	+	// Should always find the event before getting to this point, so throw an
507	+	// exception if this happens.
508	+	throw std::runtime_error( "ReducedMenuSample::getEvent(eventNumber) was asked for an invalid eventNumber" );
509	+	}
510	+
511	+	std::unique_ptr<l1menu::ICachedTrigger> l1menu::ReducedMenuSample::createCachedTrigger( const l1menu::ITrigger& trigger ) const
512	+	{
513	+	return std::unique_ptr<l1menu::ICachedTrigger>( new CachedTriggerImplementation(*this,trigger) );
514	+	}
515	+
516	+	float l1menu::ReducedMenuSample::eventRate() const
517	+	{
518	+	return pImple_->eventRate;
519	+	}
520	+
521	+	void l1menu::ReducedMenuSample::setEventRate( float rate )
522	+	{
523	+	pImple_->eventRate=rate;
524	+	}
525	+
526	+	float l1menu::ReducedMenuSample::sumOfWeights() const
527	+	{
528	+	return pImple_->sumOfWeights;
529	+	}
530	+
531	+	std::unique_ptr<const l1menu::IMenuRate> l1menu::ReducedMenuSample::rate( const l1menu::TriggerMenu& menu ) const
532	+	{
533	+	// TODO make sure the TriggerMenu is valid for this sample
534	+
535	+	// The number of events that pass each trigger
536	+	std::vector<size_t> numberOfEventsPassed( menu.numberOfTriggers() );
537	+	float numberOfEventsPassingAnyTrigger;
538	+
539	+	// Using cached triggers significantly increases speed for ReducedMenuSample
540	+	// because it cuts out expensive string comparisons when querying the trigger
541	+	// parameters.
542	+	std::vector< std::unique_ptr<l1menu::ICachedTrigger> > cachedTriggers;
543	+	for( size_t triggerNumber=0; triggerNumber<menu.numberOfTriggers(); ++triggerNumber )
544	+	{
545	+	cachedTriggers.push_back( createCachedTrigger( menu.getTrigger( triggerNumber ) ) );
546	+	}
547	+
548	+	for( size_t eventNumber=0; eventNumber<numberOfEvents(); ++eventNumber )
549	+	{
550	+	const l1menu::IEvent& event=getEvent(eventNumber);
551	+	bool anyTriggerPassed=false;
552	+
553	+	for( size_t triggerNumber=0; triggerNumber<cachedTriggers.size(); ++triggerNumber )
554	+	{
555	+	if( cachedTriggers[triggerNumber]->apply(event) )
556	+	{
557	+	// If the event passes the trigger, increment the counter
558	+	++numberOfEventsPassed[triggerNumber];
559	+	anyTriggerPassed=true;
560	+	}
561	+	}
562	+
563	+	if( anyTriggerPassed ) ++numberOfEventsPassingAnyTrigger;
564	+	}
565	+
566	+	l1menu::implementation::MenuRateImplementation* pRates=new l1menu::implementation::MenuRateImplementation;
567	+	// This is the value I want to return, but I still need access to the extended attributes of the subclass
568	+	std::unique_ptr<const l1menu::IMenuRate> pReturnValue( pRates );
569	+
570	+	pRates->setScaling( pImple_->eventRate );
571	+
572	+	pRates->setTotalFraction( static_cast<float>(numberOfEventsPassingAnyTrigger)/static_cast<float>(numberOfEvents()) );
573	+
574	+	for( size_t triggerNumber=0; triggerNumber<numberOfEventsPassed.size(); ++triggerNumber )
575	+	{
576	+	float fraction=static_cast<float>(numberOfEventsPassed[triggerNumber])/static_cast<float>(numberOfEvents());
577	+	pRates->addTriggerRate( menu.getTrigger(triggerNumber), fraction );
578	+	}
579	+
580	+	return pReturnValue;
581	+	}

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