edm::TRandomAdaptor Class Reference

#include <TRandomAdaptor.h>

Inheritance diagram for edm::TRandomAdaptor:

Public Types
typedef value_ptr< TRandom3 >	TRandom3Ptr

Public Member Functions
std::string	beginTag ()
double	flat () override
void	flatArray (int const size, double *vect) override
std::istream &	get (std::istream &is) override
bool	get (std::vector< unsigned long > const &v) override
TRandom3 *	getRootEngine ()
std::istream &	getState (std::istream &is) override
bool	getState (std::vector< unsigned long > const &v) override
std::string	name () const override
	operator float () override
	operator unsigned int () override
std::ostream &	put (std::ostream &os) const override
std::vector< unsigned long >	put () const override
void	restoreStatus (char const filename[]="TRandom.conf") override
void	saveStatus (char const filename[]="TRandom.conf") const override
void	setSeed (long seed, int) override
void	setSeeds (long const *seeds, int) override
void	showStatus () const override
	TRandomAdaptor ()
	TRandomAdaptor (long seed)
	TRandomAdaptor (int rowIndex, int colIndex)
	TRandomAdaptor (std::istream &is)
	~TRandomAdaptor () override

Static Public Member Functions
static std::string	engineName ()

Private Member Functions
void	Grumble (std::string const &errortext) const

Private Attributes
TRandom3Ptr	trand_

Detailed Description

Definition at line 13 of file TRandomAdaptor.h.

Member Typedef Documentation

typedef value_ptr<TRandom3> edm::TRandomAdaptor::TRandom3Ptr

Definition at line 15 of file TRandomAdaptor.h.

Constructor & Destructor Documentation

edm::TRandomAdaptor::TRandomAdaptor

(

)

Definition at line 17 of file TRandomAdaptor.cc.

References trand_.

: trand_(new TRandom3()) { theSeed = trand_->GetSeed(); }

edm::TRandomAdaptor::TRandomAdaptor

(

long

seed

)

Definition at line 18 of file TRandomAdaptor.cc.

References trand_.

: trand_(new TRandom3(seed)) { theSeed = trand_->GetSeed(); }

edm::TRandomAdaptor::TRandomAdaptor	(	int	rowIndex,
		int	colIndex
	)

Definition at line 19 of file TRandomAdaptor.cc.

References trand_.

                                                           : trand_(new TRandom3(rowIndex * colIndex - 1)) {
    theSeed = trand_->GetSeed();
  }

edm::TRandomAdaptor::TRandomAdaptor

(

std::istream &

is

)

Definition at line 23 of file TRandomAdaptor.cc.

References Grumble(), and AlCaHLTBitMon_QueryRunRegistry::string.

                                            {
    Grumble(std::string("Cannot instantiate a TRandom engine from an istream"));
  }

edm::TRandomAdaptor::~TRandomAdaptor ( )

override

Definition at line 27 of file TRandomAdaptor.cc.

{}

Member Function Documentation

std::string edm::TRandomAdaptor::beginTag ( )

inline

Definition at line 54 of file TRandomAdaptor.h.

References getState(), AlCaHLTBitMon_QueryRunRegistry::string, and trand_.

{ return std::string(trand_->GetName()) + std::string("-begin"); }

static std::string edm::TRandomAdaptor::engineName ( )

inlinestatic

Definition at line 59 of file TRandomAdaptor.h.

References put(), AlCaHLTBitMon_QueryRunRegistry::string, and findQualityFiles::v.

{ return std::string("TRandomAdaptor"); }

double edm::TRandomAdaptor::flat ( void  )

inlineoverride

Definition at line 25 of file TRandomAdaptor.h.

References trand_.

{ return trand_->Rndm(); }

void edm::TRandomAdaptor::flatArray ( int const  size, double *  vect  )

inlineoverride

Definition at line 28 of file TRandomAdaptor.h.

References SurveyInfoScenario_cff::seed, setSeed(), setSeeds(), and trand_.

{ trand_->RndmArray(size, vect); }

std::istream & edm::TRandomAdaptor::get ( std::istream &  is )

override

Definition at line 84 of file TRandomAdaptor.cc.

References getState(), Grumble(), and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by Options.Options::__getitem__(), betterConfigParser.BetterConfigParser::__updateDict(), betterConfigParser.BetterConfigParser::getCompares(), betterConfigParser.BetterConfigParser::getGeneral(), and betterConfigParser.BetterConfigParser::getResultingSection().

                                                {
    Grumble(std::string("get(std::istream) not available for TRandom engines"));
    return getState(is);
  }

bool edm::TRandomAdaptor::get ( std::vector< unsigned long > const &  v )

override

Definition at line 94 of file TRandomAdaptor.cc.

References edmScanValgrind::buffer, mps_fire::i, and trand_.

Referenced by Options.Options::__getitem__(), betterConfigParser.BetterConfigParser::__updateDict(), betterConfigParser.BetterConfigParser::getCompares(), betterConfigParser.BetterConfigParser::getGeneral(), and betterConfigParser.BetterConfigParser::getResultingSection().

                                                            {
    if (v.empty())
      return false;
    if (v[0] != CLHEP::engineIDulong<TRandomAdaptor>())
      return false;
    int32_t numItems = v.size() - 1;

    int32_t itemSize = sizeof(uint32_t);
    TBufferFile buffer(TBuffer::kRead, numItems * itemSize + 1024);
    char* bufferPtr = buffer.Buffer();
    for (int32_t i = 0; i < numItems; ++i) {
      *reinterpret_cast<uint32_t*>(bufferPtr + i * itemSize) = static_cast<uint32_t>(v[i + 1] & 0xffffffff);
    }

    // Note that this will fail if the TRandom3 version (specifically the TStreamerInfo)
    // has changed between the time the state was saved and the time the following call
    // is made.  Because we are manually calling the Streamer function, the original
    // TStreamerInfo is not saved anywhere. Normally ROOT saves the TStreamerInfo
    // automatically.
    trand_->Streamer(buffer);

    return true;
  }

TRandom3* edm::TRandomAdaptor::getRootEngine ( )

inline

Definition at line 66 of file TRandomAdaptor.h.

References Grumble(), AlCaHLTBitMon_QueryRunRegistry::string, and trand_.

{ return trand_.operator->(); }

std::istream & edm::TRandomAdaptor::getState ( std::istream &  is )

override

Definition at line 89 of file TRandomAdaptor.cc.

References Grumble(), and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by beginTag(), and get().

                                                     {
    Grumble(std::string("getState(std::istream) not available for TRandom engines"));
    return is;
  }

bool edm::TRandomAdaptor::getState ( std::vector< unsigned long > const &  v )

inlineoverride

Definition at line 63 of file TRandomAdaptor.h.

References findQualityFiles::v.

{ return get(v); }

void edm::TRandomAdaptor::Grumble ( std::string const &  errortext ) const

private

Definition at line 118 of file TRandomAdaptor.cc.

References edm::errors::UnimplementedFeature.

Referenced by get(), getRootEngine(), getState(), put(), and TRandomAdaptor().

                                                               {
    // Throw an edm::Exception for unimplemented functions
    std::ostringstream sstr;
    sstr << "Unimplemented Feature: " << errortext << '\n';
    edm::Exception except(edm::errors::UnimplementedFeature, sstr.str());
    throw except;
  }

std::string edm::TRandomAdaptor::name ( void  ) const

inlineoverride

Definition at line 58 of file TRandomAdaptor.h.

References AlCaHLTBitMon_QueryRunRegistry::string, and trand_.

Referenced by config.CFG::__str__(), validation.Sample::digest(), and VIDSelectorBase.VIDSelectorBase::initialize().

{ return std::string("T") + std::string(trand_->GetName()); }

edm::TRandomAdaptor::operator float ( )

inlineoverride

Definition at line 47 of file TRandomAdaptor.h.

References trand_.

{ return (float)(trand_->Rndm()); }

edm::TRandomAdaptor::operator unsigned int ( )

inlineoverride

Definition at line 50 of file TRandomAdaptor.h.

References put(), and trand_.

{ return (unsigned int)((trand_->Rndm()) * exponent_bit_32()); }

std::ostream & edm::TRandomAdaptor::put ( std::ostream &  os ) const

override

Definition at line 29 of file TRandomAdaptor.cc.

References Grumble(), and AlCaHLTBitMon_QueryRunRegistry::string.

                                                      {
    Grumble(std::string("put(std::ostream) not available for TRandom engines"));
    return os;
  }

std::vector< unsigned long > edm::TRandomAdaptor::put ( ) const

override

Definition at line 34 of file TRandomAdaptor.cc.

References edmScanValgrind::buffer, mps_fire::i, trand_, and findQualityFiles::v.

Referenced by engineName(), and operator unsigned int().

                                                     {
    std::vector<unsigned long> v;

    int32_t itemSize = sizeof(uint32_t);
    TBufferFile buffer(TBuffer::kWrite, 2048 * itemSize);
    trand_->Streamer(buffer);
    buffer.SetReadMode();
    char* bufferPtr = buffer.Buffer();
    int32_t numItems = (buffer.Length() + itemSize - 1) / itemSize;
    v.reserve(numItems + 1);
    v.push_back(CLHEP::engineIDulong<TRandomAdaptor>());
    for (int i = 0; i < numItems; ++i) {
      // Here we do some ugly manipulations to the data to match the format
      // of the output of the CLHEP put function (the whole point of this adaptor
      // is to make TRandom3 work through the CLHEP interface as if it were a
      // a CLHEP engine ...).  In CLHEP, the vector returned by put contains
      // unsigned long's, but these always contain only 32 bits of information.
      // In the case of a 64 bit build the top 32 bits is only padding (all 0's).

      // Get the next 32 bits of data from the buffer
      uint32_t value32 = *reinterpret_cast<uint32_t*>(bufferPtr + i * itemSize);

      if (i == numItems - 1) {
        int nBytes = buffer.Length() % itemSize;
        if (nBytes == 1)
          value32 &= 0xffu;
        else if (nBytes == 2)
          value32 &= 0xffffu;
        else if (nBytes == 3)
          value32 &= 0xffffffu;
      }

      // Push it into the vector in an unsigned long which may be 32 or 64 bits
      v.push_back(static_cast<unsigned long>(value32));
    }
    return v;
  }

void edm::TRandomAdaptor::restoreStatus ( char const  filename[] = "TRandom.conf" )

inlineoverride

Definition at line 41 of file TRandomAdaptor.h.

References corrVsCorr::filename, and trand_.

{ trand_->ReadRandom(filename); }

void edm::TRandomAdaptor::saveStatus ( char const  filename[] = "TRandom.conf" ) const

inlineoverride

Definition at line 38 of file TRandomAdaptor.h.

References corrVsCorr::filename, and trand_.

{ trand_->WriteRandom(filename); }

void edm::TRandomAdaptor::setSeed ( long  seed, int    )

override

Definition at line 72 of file TRandomAdaptor.cc.

References trand_.

Referenced by flatArray().

                                             {
    trand_->SetSeed(seed);
    theSeed = trand_->GetSeed();
  }

void edm::TRandomAdaptor::setSeeds ( long const *  seeds, int    )

override

Definition at line 79 of file TRandomAdaptor.cc.

References trand_.

Referenced by flatArray().

                                                      {
    trand_->SetSeed(seeds[0]);
    theSeed = trand_->GetSeed();
  }

void edm::TRandomAdaptor::showStatus ( ) const

inlineoverride

Definition at line 44 of file TRandomAdaptor.h.

References trand_.

{ trand_->Dump(); }

Member Data Documentation

TRandom3Ptr edm::TRandomAdaptor::trand_

mutableprivate

Definition at line 71 of file TRandomAdaptor.h.

Referenced by beginTag(), flat(), flatArray(), get(), getRootEngine(), name(), operator float(), operator unsigned int(), put(), restoreStatus(), saveStatus(), setSeed(), setSeeds(), showStatus(), and TRandomAdaptor().