arttest::FPCTest Class Reference

Inheritance diagram for arttest::FPCTest:

Public Member Functions
	FPCTest (fhicl::ParameterSet const &)
Public Member Functions inherited from art::EDAnalyzer
	EDAnalyzer (fhicl::ParameterSet const &pset)
template<typename Config >
	EDAnalyzer (Table< Config > const &config)
std::string	workerType () const
Public Member Functions inherited from art::detail::Analyzer
virtual	~Analyzer () noexcept
	Analyzer (fhicl::ParameterSet const &pset)
template<typename Config >
	Analyzer (Table< Config > const &config)
void	doBeginJob (SharedResources const &resources)
void	doEndJob ()
void	doRespondToOpenInputFile (FileBlock const &fb)
void	doRespondToCloseInputFile (FileBlock const &fb)
void	doRespondToOpenOutputFiles (FileBlock const &fb)
void	doRespondToCloseOutputFiles (FileBlock const &fb)
bool	doBeginRun (RunPrincipal &rp, ModuleContext const &mc)
bool	doEndRun (RunPrincipal &rp, ModuleContext const &mc)
bool	doBeginSubRun (SubRunPrincipal &srp, ModuleContext const &mc)
bool	doEndSubRun (SubRunPrincipal &srp, ModuleContext const &mc)
bool	doEvent (EventPrincipal &ep, ModuleContext const &mc, std::atomic< std::size_t > &counts_run, std::atomic< std::size_t > &counts_passed, std::atomic< std::size_t > &counts_failed)
Public Member Functions inherited from art::Observer
	~Observer () noexcept
	Observer (Observer const &)=delete
	Observer (Observer &&)=delete
Observer &	operator= (Observer const &)=delete
Observer &	operator= (Observer &&)=delete
void	registerProducts (ProductDescriptions &, ModuleDescription const &)
void	fillDescriptions (ModuleDescription const &)
fhicl::ParameterSetID	selectorConfig () const
Public Member Functions inherited from art::ModuleBase
virtual	~ModuleBase () noexcept
	ModuleBase ()
ModuleDescription const &	moduleDescription () const
void	setModuleDescription (ModuleDescription const &)
std::array< std::vector< ProductInfo >, NumBranchTypes > const &	getConsumables () const
void	sortConsumables (std::string const &current_process_name)
template<typename T , BranchType BT>
ViewToken< T >	consumesView (InputTag const &tag)
template<typename T , BranchType BT>
ViewToken< T >	mayConsumeView (InputTag const &tag)

Private Member Functions
void	analyze (Event const &)

Additional Inherited Members
Public Types inherited from art::EDAnalyzer
using	WorkerType = WorkerT< EDAnalyzer >
using	ModuleType = EDAnalyzer
Protected Member Functions inherited from art::Observer
std::string const &	processName () const
bool	wantAllEvents () const noexcept
bool	wantEvent (ScheduleID id, Event const &e) const
Handle< TriggerResults >	getTriggerResults (Event const &e) const
	Observer (fhicl::ParameterSet const &config)
	Observer (std::vector< std::string > const &select_paths, std::vector< std::string > const &reject_paths, fhicl::ParameterSet const &config)
Protected Member Functions inherited from art::ModuleBase
ConsumesCollector &	consumesCollector ()
template<typename T , BranchType = InEvent>
ProductToken< T >	consumes (InputTag const &)
template<typename Element , BranchType = InEvent>
ViewToken< Element >	consumesView (InputTag const &)
template<typename T , BranchType = InEvent>
void	consumesMany ()
template<typename T , BranchType = InEvent>
ProductToken< T >	mayConsume (InputTag const &)
template<typename Element , BranchType = InEvent>
ViewToken< Element >	mayConsumeView (InputTag const &)
template<typename T , BranchType = InEvent>
void	mayConsumeMany ()

Detailed Description

Definition at line 31 of file FPCTest_module.cc.

Constructor & Destructor Documentation

arttest::FPCTest::FPCTest ( fhicl::ParameterSet const &  p )

explicit

Definition at line 39 of file FPCTest_module.cc.

                                             : EDAnalyzer{p}
  {
    // Install the SIGFPE handler.
    struct sigaction act;
    memset(&act, 0, sizeof(act));
    act.sa_sigaction = handle_sigfpe;
    act.sa_flags = SA_RESTART;
    if (sigaction(SIGFPE, &act, 0) != 0) {
      perror("sigaction failed");
      throw runtime_error("cannot install sigaction signal handler");
    }
    // Block the floating point exception signal SIGFPE.
    // We need this to be done in the main thread early
    // so that it is blocked in all threads started by tbb.
    sigset_t newset;
    sigemptyset(&newset);
    sigaddset(&newset, SIGFPE);
    pthread_sigmask(SIG_BLOCK, &newset, 0);
  }

Member Function Documentation

void arttest::FPCTest::analyze ( Event const &  e )

privatevirtual

Implements art::EDAnalyzer.

Definition at line 60 of file FPCTest_module.cc.

  {
    double const x{1.0};
    double const y{DBL_MAX};
    if (e.id().event() == 2) {
      // Allow the floating point exception signal SIGFPE.
      sigset_t newset;
      sigemptyset(&newset);
      sigaddset(&newset, SIGFPE);
      pthread_sigmask(SIG_UNBLOCK, &newset, 0);
      // Show the variable values.
      mf::LogVerbatim("FPExceptions") << "\n\t\tx = " << x;
      mf::LogVerbatim("FPExceptions") << "\t\ty = " << y << " (DBL_MAX)";
      // DivideByZero
      mf::LogVerbatim("FPExceptions") << "\t\tForce DivideByZero: a = x/zero";
      double const a{divit(x, 0)};
      mf::LogVerbatim("FPExceptions") << "\t\ta = " << a;
      // Invalid
      mf::LogVerbatim("FPExceptions") << "\t\tForce Invalid: b = log(-1.0)";
      double const b{log(-1.0)};
      mf::LogVerbatim("FPExceptions") << "\t\tb = " << b;
      // Overflow (actually precision)
      mf::LogVerbatim("FPExceptions") << "\t\tForce Overflow: c = y*y";
      double const c{multit(y, y)};
      mf::LogVerbatim("FPExceptions") << "\t\tc = " << c;
      // Underflow (actually precision)
      mf::LogVerbatim("FPExceptions") << "\t\tForce Underflow: d = x/y";
      double const d{divit(x, y)};
      mf::LogVerbatim("FPExceptions") << "\t\td = " << d;
      abort();
    }
  }

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The documentation for this class was generated from the following file:

• art/art/test/Framework/Services/System/FPCTest_module.cc