| The Gaudi Framework v32r1 (f65d50dc)

GaudiSequencer.cpp
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1 // Include files
2 #include <initializer_list>
3 #include <tuple>
4
5 // from Gaudi
6 #include "GaudiAlg/GaudiSequencer.h"
7 #include "GaudiAlg/ISequencerTimerTool.h"
8 #include "GaudiKernel/IAlgManager.h"
9 #include "GaudiKernel/IJobOptionsSvc.h"
10 #include "GaudiKernel/ThreadLocalContext.h"
11
12 #include "GaudiCommon.icpp"
13 template class GaudiCommon<Gaudi::Sequence>;
14
15 namespace {
16
17 bool isDefault( const std::string& s ) { return s.empty(); }
18
19 template <typename Container>
20 bool veto( const Container* props, const char* name ) { // avoid changing properties explicitly present in the JOS...
21 return props &&
22 std::any_of( begin( *props ), end( *props ), [name]( const auto* prop ) { return prop->name() == name; } );
23 }
24
25 template <typename F, typename... Args>
26 void for_each_arg( F&& f, Args&&... args ) {
27 // the std::initializer_list only exists to provide a 'context' in which to
28 // expand the variadic pack
29 (void)std::initializer_list<int>{( f( std::forward<Args>( args ) ), 0 )...};
30 }
31
32 // utility class to populate some properties in the job options service
33 // for a given instance name in case those options are not explicitly
34 // set a-priori (effectively inheriting their values from the GaudiSequencer)
35 class populate_JobOptionsSvc_t {
36 std::vector<std::string> m_props;
37 IJobOptionsSvc* m_jos;
38 std::string m_name;
39
40 template <typename Properties, typename Key, typename Value>
41 void addPropertyToCatalogue( const Properties* props, const std::tuple<Key, Value>& arg ) {
42 const auto& key = std::get<0>( arg );
43 const auto& value = std::get<1>( arg );
44 if ( isDefault( value ) || veto( props, key ) ) return;
45 m_jos->addPropertyToCatalogue( m_name, Gaudi::Property<std::decay_t<Value>>{key, value} ).ignore();
46 m_props.push_back( key );
47 }
48
49 public:
50 template <typename... Args>
51 populate_JobOptionsSvc_t( std::string name, IJobOptionsSvc* jos, Args&&... args )
52 : m_jos{jos}, m_name{std::move( name )} {
53 const auto* props = m_jos->getProperties( m_name );
54 for_each_arg( [&]( auto&& arg ) { this->addPropertyToCatalogue( props, std::forward<decltype( arg )>( arg ) ); },
55 std::forward<Args>( args )... );
56 }
57 ~populate_JobOptionsSvc_t() {
58 std::for_each( begin( m_props ), end( m_props ),
59 [&]( const std::string& key ) { m_jos->removePropertyFromCatalogue( m_name, key ).ignore(); } );
60 }
61 };
62 } // namespace
63
64 //-----------------------------------------------------------------------------
65 // Implementation file for class : GaudiSequencer
66 //
67 // 2004-05-13 : Olivier Callot
68 //-----------------------------------------------------------------------------
69
70 //=============================================================================
71 // Initialisation. Check parameters
72 //=============================================================================
73 StatusCode GaudiSequencer::initialize() {
74 // Note: not calling base class initialize because we want to reimplement the loop over sub algs
75 if ( msgLevel( MSG::DEBUG ) ) debug() << "==> Initialise" << endmsg;
76
77 auto status = decodeNames();
78 if ( !status.isSuccess() ) return status;
79
80 m_timerTool = tool<ISequencerTimerTool>( "SequencerTimerTool" );
81
82 if ( m_timerTool->globalTiming() ) m_measureTime = true;
83
84 if ( m_measureTime ) {
85 m_timer = m_timerTool->addTimer( name() );
86 m_timerTool->increaseIndent();
87 } else {
88 release( m_timerTool );
89 m_timerTool = nullptr;
90 }
91
92 //== Initialize the algorithms
93 for ( auto& entry : m_entries ) {
94 if ( m_measureTime ) { entry.setTimer( m_timerTool->addTimer( entry.algorithm()->name() ) ); }
95
96 status = entry.algorithm()->sysInitialize();
97 if ( !status.isSuccess() ) { return Error( "Can not initialize " + entry.algorithm()->name(), status ); }
98 }
99 if ( m_measureTime ) m_timerTool->decreaseIndent();
100
101 return StatusCode::SUCCESS;
102 }
103
104 //=============================================================================
105 // Main execution
106 //=============================================================================
107 StatusCode GaudiSequencer::execute( const EventContext& ctx ) const {
108
109 if ( m_measureTime ) m_timerTool->start( m_timer );
110
111 if ( msgLevel( MSG::DEBUG ) ) debug() << "==> Execute" << endmsg;
112
113 StatusCode result = StatusCode( StatusCode::SUCCESS, true );
114
115 bool seqPass = !m_modeOR; // for OR, result will be false, unless (at least) one is true
116 // for AND, result will be true, unless (at least) one is false
117 // also see comment below ....
118
119 for ( auto& entry : m_entries ) {
120 Gaudi::Algorithm* myAlg = entry.algorithm();
121 if ( !myAlg->isEnabled() ) continue;
122 if ( myAlg->execState( ctx ).state() != AlgExecState::State::Done ) {
123
124 if ( m_measureTime ) m_timerTool->start( entry.timer() );
125 result = myAlg->sysExecute( ctx );
126 if ( m_measureTime ) m_timerTool->stop( entry.timer() );
127 if ( !result.isSuccess() ) break; //== Abort and return bad status
128 }
129 //== Check the returned status
130 if ( !m_ignoreFilter ) {
131 bool passed = myAlg->execState( ctx ).filterPassed();
132 if ( msgLevel( MSG::VERBOSE ) )
133 verbose() << "Algorithm " << myAlg->name() << " returned filter passed " << ( passed ? "true" : "false" )
134 << endmsg;
135 if ( entry.reverse() ) passed = !passed;
136
137 //== indicate our own result. For OR, exit as soon as true.
138 // If no more, will exit with false.
139 //== for AND, exit as soon as false. Else, will be true (default)
140
141 // if not short-circuiting, make sure we latch iPass to 'true' in
142 // OR mode (i.e. it is sufficient for one item to be true in order
143 // to be true at the end, and thus we start out at 'false'), and latch
144 // to 'false' in AND mode (i.e. it is sufficient for one item to
145 // be false to the false in the end, and thus we start out at 'true')
146 // -- i.e. we should not just blindly return the 'last' passed status!
147
148 // or to put it another way: in OR mode, we don't care about things
149 // which are false, as they leave our current state alone (provided
150 // we stared as 'false'!), and in AND mode, we keep our current
151 // state until someone returns 'false' (provided we started as 'true')
152 if ( m_modeOR ? passed : !passed ) {
153 seqPass = passed;
154 if ( msgLevel( MSG::VERBOSE ) ) verbose() << "SeqPass is now " << ( seqPass ? "true" : "false" ) << endmsg;
155 if ( m_shortCircuit ) break;
156 }
157 }
158 }
159 if ( msgLevel( MSG::VERBOSE ) ) verbose() << "SeqPass is " << ( seqPass ? "true" : "false" ) << endmsg;
160 auto& state = execState( ctx );
161 if ( !m_ignoreFilter && !m_entries.empty() ) state.setFilterPassed( m_invert ? !seqPass : seqPass );
162 state.setState( AlgExecState::State::Done );
163
164 if ( m_measureTime ) m_timerTool->stop( m_timer );
165
166 return m_returnOK ? ( result.ignore(), StatusCode::SUCCESS ) : result;
167 }
168
169 //=========================================================================
170 // Decode the input names and fills the m_algs vector.
171 //=========================================================================
172 StatusCode GaudiSequencer::decodeNames() {
173 StatusCode final = StatusCode::SUCCESS;
174 m_entries.clear();
175
176 //== Get the "Context" option if in the file...
177 auto jos = service<IJobOptionsSvc>( "JobOptionsSvc" );
178
179 //= Get the Application manager, to see if algorithm exist
180 auto appMgr = service<IAlgManager>( "ApplicationMgr" );
181 for ( const auto& item : m_names.value() ) {
182 const Gaudi::Utils::TypeNameString typeName( item );
183 const std::string& theName = typeName.name();
184 const std::string& theType = typeName.type();
185
186 //== Check wether the specified algorithm already exists. If not, create it
187 StatusCode result = StatusCode::SUCCESS;
188 SmartIF<IAlgorithm> myIAlg = appMgr->algorithm( typeName, false ); // do not create it now
189 if ( !myIAlg ) {
190 // ensure some magic properties are set while we create the subalgorithm so
191 // that it effectively inherites 'our' settings -- if they have non-default
192 // values... and are not set explicitly already.
193 populate_JobOptionsSvc_t populate_guard{theName, jos, std::forward_as_tuple( "Context", context() ),
194 std::forward_as_tuple( "RootInTES", rootInTES() )};
195 Gaudi::Algorithm* myAlg = nullptr;
196 result = createSubAlgorithm( theType, theName, myAlg );
197 myIAlg = myAlg; // ensure that myIAlg.isValid() from here onwards!
198 } else {
199 Gaudi::Algorithm* myAlg = dynamic_cast<Gaudi::Algorithm*>( myIAlg.get() );
200 if ( myAlg ) {
201 subAlgorithms()->push_back( myAlg );
202 // when the algorithm is not created, the ref count is short by one, so we have to fix it.
203 myAlg->addRef();
204 }
205 }
206
207 // propagate the sub-algorithm into own state.
208 if ( result.isSuccess() && Gaudi::StateMachine::INITIALIZED <= FSMState() && myIAlg &&
209 Gaudi::StateMachine::INITIALIZED > myIAlg->FSMState() ) {
210 StatusCode sc = myIAlg->sysInitialize();
211 if ( sc.isFailure() ) result = sc;
212 }
213
214 // propagate the sub-algorithm into own state.
215 if ( result.isSuccess() && Gaudi::StateMachine::RUNNING <= FSMState() && myIAlg &&
216 Gaudi::StateMachine::RUNNING > myIAlg->FSMState() ) {
217 StatusCode sc = myIAlg->sysStart();
218 if ( sc.isFailure() ) result = sc;
219 }
220
221 //== Is it an Algorithm ? Strange test...
222 if ( result.isSuccess() ) {
223 // TODO: (MCl) it is possible to avoid the dynamic_cast in most of the
224 // cases by keeping the result of createSubAlgorithm.
225 Gaudi::Algorithm* myAlg = dynamic_cast<Gaudi::Algorithm*>( myIAlg.get() );
226 if ( myAlg ) {
227 // Note: The reference counting is kept by the system of sub-algorithms
228 m_entries.emplace_back( myAlg );
229 if ( msgLevel( MSG::DEBUG ) ) debug() << "Added algorithm " << theName << endmsg;
230 } else {
231 warning() << theName << " is not a Gaudi::Algorithm - failed dynamic_cast" << endmsg;
232 final = StatusCode::FAILURE;
233 }
234 } else {
235 warning() << "Unable to find or create " << theName << endmsg;
236 final = result;
237 }
238 }
239
240 //== Print the list of algorithms
241 MsgStream& msg = info();
242 if ( m_modeOR ) msg << "OR ";
243 msg << "Member list: ";
244 GaudiUtils::details::ostream_joiner( msg, m_entries, ", ",
245 []( auto& os, const AlgorithmEntry& e ) -> decltype( auto ) {
246 Gaudi::Algorithm* alg = e.algorithm();
247 std::string typ = System::typeinfoName( typeid( *alg ) );
248 os << typ;
249 if ( alg->name() != typ ) os << "/" << alg->name();
250 return os;
251 } );
252 if ( !isDefault( context() ) ) msg << ", with context '" << context() << "'";
253 if ( !isDefault( rootInTES() ) ) msg << ", with rootInTES '" << rootInTES() << "'";
254 msg << endmsg;
255
256 return final;
257 }
258
259 //=========================================================================
260 // Interface for the Property manager
261 //=========================================================================
262 void GaudiSequencer::membershipHandler() {
263 // no action for not-yet initialized sequencer
264 if ( Gaudi::StateMachine::INITIALIZED > FSMState() ) return; // RETURN
265
266 decodeNames().ignore();
267
268 if ( !m_measureTime ) return; // RETURN
269
270 // add the entries into timer table:
271
272 if ( !m_timerTool ) { m_timerTool = tool<ISequencerTimerTool>( "SequencerTimerTool" ); }
273
274 if ( m_timerTool->globalTiming() ) m_measureTime = true;
275
276 m_timer = m_timerTool->addTimer( name() );
277 m_timerTool->increaseIndent();
278
279 for ( auto& entry : m_entries ) { entry.setTimer( m_timerTool->addTimer( entry.algorithm()->name() ) ); }
280
281 m_timerTool->decreaseIndent();
282 }
283
284 std::ostream& GaudiSequencer::toControlFlowExpression( std::ostream& os ) const {
285 if ( m_invert ) os << "~";
286 // the default filterpass value for an empty sequencer depends on ModeOR
287 if ( m_entries.empty() ) return os << ( ( !m_modeOR ) ? "CFTrue" : "CFFalse" );
288
289 // if we have only one element, we do not need a name
290 if ( m_entries.size() > 1 ) os << "seq(";
291
292 const auto op = m_modeOR ? " | " : " & ";
293 const auto last = end( m_entries );
294 const auto first = begin( m_entries );
295 for ( auto iterator = first; iterator != last; ++iterator ) {
296 if ( iterator != first ) os << op;
297 if ( iterator->reverse() ) os << "~";
298 iterator->algorithm()->toControlFlowExpression( os );
299 }
300
301 if ( m_entries.size() > 1 ) os << ")";
302 return os;
303 }
304
305 // ============================================================================
306 StatusCode GaudiSequencer::sysExecute( const EventContext& ctx ) {
307 StatusCode sc{StatusCode::SUCCESS};
308
309 IAlgContextSvc* algCtx = nullptr;
310 if ( registerContext() ) { algCtx = contextSvc(); }
311 // Lock the context
312 Gaudi::Utils::AlgContext cnt( this, algCtx, ctx );
313
314 // Do not execute if one or more of the m_vetoObjs exist in TES
315 const auto it = find_if( begin( m_vetoObjs ), end( m_vetoObjs ),
316 [&]( const std::string& loc ) { return this->exist<DataObject>( evtSvc(), loc ); } );
317 if ( it != end( m_vetoObjs ) ) {
318 if ( msgLevel( MSG::DEBUG ) ) debug() << *it << " found, skipping event " << endmsg;
319 return sc;
320 }
321
322 // Execute if m_requireObjs is empty
323 // or if one or more of the m_requireObjs exist in TES
324 bool doIt = m_requireObjs.empty() ||
325 any_of( begin( m_requireObjs ), end( m_requireObjs ),
326 [&]( const std::string& loc ) { return this->exist<DataObject>( evtSvc(), loc ); } );
327
328 // execute the generic method:
329 if ( doIt ) sc = GaudiCommon<Gaudi::Sequence>::sysExecute( ctx );
330 return sc;
331 }
332 //=============================================================================
GaudiSequencer::m_measureTime
Gaudi::Property< bool > m_measureTime
Definition: GaudiSequencer.h:75
MsgStream
Definition of the MsgStream class used to transmit messages.
Definition: MsgStream.h:24
Gaudi::StateMachine::INITIALIZED
Definition: StateMachine.h:15
SmartIF< IAlgorithm >
ISequencerTimerTool::decreaseIndent
virtual void decreaseIndent()=0
Decrease the indentation of the name.
ManySmallAlgs.alg
alg
Definition: ManySmallAlgs.py:69
std::forward_as_tuple
T forward_as_tuple(T... args)
Gaudi::Utils::AlgContext
Helper "sentry" class to automatize the safe register/unregister the algorithm's context.
Definition: IAlgContextSvc.h:74
gaudiComponentHelp.name
name
Definition: gaudiComponentHelp.py:41
Gaudi::Property
Implementation of property with value of concrete type.
Definition: Property.h:352
IAlgorithm::sysStart
virtual StatusCode sysStart()=0
Startup method invoked by the framework.
GaudiSequencer::initialize
StatusCode initialize() override
Definition: GaudiSequencer.cpp:73
System::typeinfoName
GAUDI_API const std::string typeinfoName(const std::type_info &)
Get platform independent information about the class type.
Definition: System.cpp:298
ISequencerTimerTool::addTimer
virtual int addTimer(const std::string &name)=0
add a timer entry with the specified name
ThreadLocalContext.h
MSG::DEBUG
Definition: IMessageSvc.h:15
addPropertyToCatalogue
bool PyHelper() addPropertyToCatalogue(IInterface *p, char *comp, char *name, char *value)
Definition: Bootstrap.cpp:245
GaudiCommon< Gaudi::Sequence >::Error
WARN_UNUSED StatusCode Error(const std::string &msg, const StatusCode st=StatusCode::FAILURE, const size_t mx=10) const
Print the error message and return with the given StatusCode.
Definition: GaudiCommon.icpp:286
IJobOptionsSvc::getProperties
virtual const std::vector< const Gaudi::Details::PropertyBase * > * getProperties(const std::string &client) const =0
Get the properties associated to a given client.
StatusCode::SUCCESS
constexpr static const auto SUCCESS
Definition: StatusCode.h:85
AlgExecState::filterPassed
bool filterPassed() const
Definition: IAlgExecStateSvc.h:31
ISequencerTimerTool::increaseIndent
virtual void increaseIndent()=0
Increase the indentation of the name.
MSG::VERBOSE
Definition: IMessageSvc.h:15
SmartIF::get
TYPE * get() const
Get interface pointer.
Definition: SmartIF.h:76
EventContext
This class represents an entry point to all the event specific data.
Definition: EventContext.h:24
ISequencerTimerTool::globalTiming
virtual bool globalTiming()=0
returns the flag telling that global timing is wanted
IAlgorithm::sysInitialize
virtual StatusCode sysInitialize()=0
Initialization method invoked by the framework.
std::string
STL class.
IJobOptionsSvc::addPropertyToCatalogue
virtual StatusCode addPropertyToCatalogue(const std::string &client, const Gaudi::Details::PropertyBase &property)=0
Add a property into the JobOptions catalog.
GaudiSequencer::m_timerTool
ISequencerTimerTool * m_timerTool
Pointer to the timer tool.
Definition: GaudiSequencer.h:81
GaudiSequencer.h
std::vector::push_back
T push_back(T... args)
GaudiSequencer::sysExecute
StatusCode sysExecute(const EventContext &ctx) override
Definition: GaudiSequencer.cpp:306
GaudiSequencer::m_ignoreFilter
Gaudi::Property< bool > m_ignoreFilter
Definition: GaudiSequencer.h:74
Gaudi::Utils::TypeNameString
Helper class to parse a string of format "type/name".
Definition: TypeNameString.h:10
GaudiSequencer::m_names
Gaudi::Property< std::vector< std::string > > m_names
Definition: GaudiSequencer.h:70
GaudiSequencer::m_invert
Gaudi::Property< bool > m_invert
Definition: GaudiSequencer.h:78
IJobOptionsSvc
Main interface for the JobOptions service.
Definition: IJobOptionsSvc.h:20
gaudirun.args
args
Definition: gaudirun.py:307
StatusCode
This class is used for returning status codes from appropriate routines.
Definition: StatusCode.h:50
AlgExecState::state
State state() const
Definition: IAlgExecStateSvc.h:32
GaudiSequencer::AlgorithmEntry
Definition: GaudiSequencer.h:41
compareRootHistos.state
def state
Definition: compareRootHistos.py:455
GaudiSequencer::AlgorithmEntry::algorithm
Gaudi::Algorithm * algorithm() const
Definition: GaudiSequencer.h:48
IOTest.end
def end
Definition: IOTest.py:112
StatusCode::isSuccess
bool isSuccess() const
Definition: StatusCode.h:267
GaudiCommon< Gaudi::Sequence >::context
const std::string & context() const
Returns the "context" string. Used to identify different processing states.
Definition: GaudiCommon.h:707
GaudiSequencer::m_modeOR
Gaudi::Property< bool > m_modeOR
Definition: GaudiSequencer.h:73
std::move
T move(T... args)
GaudiCommon.icpp
GaudiSequencer::decodeNames
StatusCode decodeNames()
Decode a vector of string.
Definition: GaudiSequencer.cpp:172
GaudiUtils::details::ostream_joiner
Stream & ostream_joiner(Stream &os, Iterator first, Iterator last, Separator sep, OutputElement output=OutputElement{})
Definition: SerializeSTL.h:37
std::tuple
GaudiSequencer::m_shortCircuit
Gaudi::Property< bool > m_shortCircuit
Definition: GaudiSequencer.h:77
FixTESPath::rootInTES
const std::string & rootInTES() const
Returns the "rootInTES" string.
Definition: FixTESPath.h:52
GaudiCommon< Gaudi::Sequence >::release
StatusCode release(const IInterface *interface) const
Manual forced (and 'safe') release of the active tool or service.
Definition: GaudiCommon.icpp:206
ISequencerTimerTool::start
virtual void start(int index)=0
start the counter, i.e.
GaudiSequencer::membershipHandler
void membershipHandler()
for asynchronous changes in the list of algorithms
Definition: GaudiSequencer.cpp:262
StatusCode::ignore
const StatusCode & ignore() const
Ignore/check StatusCode.
Definition: StatusCode.h:153
Gaudi::StateMachine::RUNNING
Definition: StateMachine.h:16
GaudiSequencer::execute
StatusCode execute(const EventContext &ctx) const override
Definition: GaudiSequencer.cpp:107
std::vector< std::string >
Gaudi::Algorithm::execState
AlgExecState & execState(const EventContext &ctx) const override
reference to AlgExecState of Alg
Definition: Algorithm.cpp:657
genconfuser.verbose
verbose
Definition: genconfuser.py:19
std::any_of
T any_of(T... args)
IJobOptionsSvc::removePropertyFromCatalogue
virtual StatusCode removePropertyFromCatalogue(const std::string &client, const std::string &name)=0
Remove a property from the JobOptions catalog.
IAlgTool::sysInitialize
virtual StatusCode sysInitialize()=0
Initialization of the Tool.
Gaudi::Algorithm
Base class from which all concrete algorithm classes should be derived.
Definition: Algorithm.h:79
IOTest.appMgr
appMgr
Definition: IOTest.py:92
GaudiMP.FdsRegistry.msg
msg
Definition: FdsRegistry.py:8
gaudirun.s
string s
Definition: gaudirun.py:316
ISequencerTimerTool.h
StatusCode::FAILURE
constexpr static const auto FAILURE
Definition: StatusCode.h:86
GaudiCommon< Gaudi::Sequence >
IAlgContextSvc
An abstract interface for Algorithm Context Service.
Definition: IAlgContextSvc.h:23
IAlgManager.h
GaudiSequencer::m_returnOK
Gaudi::Property< bool > m_returnOK
Definition: GaudiSequencer.h:76
StatusCode::isFailure
bool isFailure() const
Definition: StatusCode.h:130
Gaudi::Utils::begin
AttribStringParser::Iterator begin(const AttribStringParser &parser)
Definition: AttribStringParser.h:120
Gaudi::Algorithm::isEnabled
bool isEnabled() const override
Is this algorithm enabled or disabled?
Definition: Algorithm.cpp:655
GaudiSequencer::m_requireObjs
Gaudi::Property< std::vector< std::string > > m_requireObjs
Definition: GaudiSequencer.h:67
GaudiDict::typeName
std::string typeName(const std::type_info &typ)
Definition: Dictionary.cpp:21
std::for_each
T for_each(T... args)
ISequencerTimerTool::stop
virtual double stop(int index)=0
stop the counter, return the elapsed time
std::ostream
STL class.
std::forward
T forward(T... args)
GaudiSequencer::m_vetoObjs
Gaudi::Property< std::vector< std::string > > m_vetoObjs
Definition: GaudiSequencer.h:65
endmsg
MsgStream & endmsg(MsgStream &s)
MsgStream Modifier: endmsg. Calls the output method of the MsgStream.
Definition: MsgStream.h:192
std::initializer_list
GaudiSequencer::m_timer
int m_timer
Timer number for the sequencer.
Definition: GaudiSequencer.h:82
GaudiSequencer::m_entries
std::vector< AlgorithmEntry > m_entries
List of algorithms to process.
Definition: GaudiSequencer.h:80
Gaudi::Algorithm::name
const std::string & name() const override
The identifying name of the algorithm object.
Definition: Algorithm.cpp:645
Gaudi::Algorithm::sysExecute
StatusCode sysExecute(const EventContext &ctx) override
The actions to be performed by the algorithm on an event.
Definition: Algorithm.cpp:438
IJobOptionsSvc.h
GaudiSequencer::toControlFlowExpression
std::ostream & toControlFlowExpression(std::ostream &os) const override
Produce string represention of the control flow expression.
Definition: GaudiSequencer.cpp:284