FWLiteEnabler Class Reference

#include <FWLiteEnabler.h>

Public Member Functions
	FWLiteEnabler (const FWLiteEnabler &)=delete
FWLiteEnabler const &	operator= (FWLiteEnabler const &)=delete

Static Public Member Functions
static void	enable ()
	enable automatic library loading More...

Private Member Functions
	FWLiteEnabler ()

Static Private Attributes
static bool	enabled_

Friends
class	DummyClassToStopCompilerWarning

Detailed Description

helper class to enable fwlite. Using a free function enable() directly does not work in macros.

Definition at line 11 of file FWLiteEnabler.h.

Constructor & Destructor Documentation

FWLiteEnabler::FWLiteEnabler ( const FWLiteEnabler &  )

delete

FWLiteEnabler::FWLiteEnabler ( )

private

Definition at line 40 of file FWLiteEnabler.cc.

{}

Member Function Documentation

void FWLiteEnabler::enable ( )

static

enable automatic library loading

Definition at line 46 of file FWLiteEnabler.cc.

References MessageLogger_cfi::cerr, edmplugin::standard::config(), edmplugin::PluginManager::configure(), dir, enabled_, end, web.browse_db::env, fwlite::setRefStreamer(), and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by CmsShowMain::CmsShowMain(), AutoLibraryLoader::enable(), fwlite::EventContainer::EventContainer(), AutoLibraryLoader::loadAll(), and main().

                           {
  if (enabled_) {
    return;
  }
  enabled_ = true;

  edmplugin::PluginManager::configure(edmplugin::standard::config());
  static BareRootProductGetter s_getter;
  //this function must be called
  // so that the TClass we need will be available
  fwlite::setRefStreamer(&s_getter);

  //Make it easy to load our headers
  TInterpreter* intrp = gROOT->GetInterpreter();
  char const* env = getenv("CMSSW_FWLITE_INCLUDE_PATH");
  if (nullptr != env) {
    //this is a comma separated list
    char const* start = env;
    char const* end;
    do {
      //find end
      for (end = start; *end != 0 and *end != ':'; ++end)
        ;
      std::string dir(start, end);
      intrp->AddIncludePath(dir.c_str());
      start = end + 1;
    } while (*end != 0);
  }

  bool foundCMSIncludes = false;
  env = getenv("CMSSW_BASE");
  if (nullptr != env) {
    foundCMSIncludes = true;
    std::string dir(env);
    dir += "/src";
    intrp->AddIncludePath(dir.c_str());
  }

  env = getenv("CMSSW_RELEASE_BASE");
  if (nullptr != env) {
    foundCMSIncludes = true;
    std::string dir(env);
    dir += "/src";
    intrp->AddIncludePath(dir.c_str());
  }
  if (not foundCMSIncludes) {
    std::cerr << "Could not find the environment variables \n"
              << "  CMSSW_BASE or\n"
              << "  CMSSW_RELEASE_BASE\n"
              << " therefore attempting to '#include' any CMS headers will not work" << std::endl;
  }
  if (nullptr != gApplication) {
    gApplication->InitializeGraphics();
  }
}

FWLiteEnabler const& FWLiteEnabler::operator= ( FWLiteEnabler const &  )

delete

Friends And Related Function Documentation

friend class DummyClassToStopCompilerWarning

friend

Definition at line 12 of file FWLiteEnabler.h.

Member Data Documentation

bool FWLiteEnabler::enabled_

staticprivate

Definition at line 21 of file FWLiteEnabler.h.

Referenced by enable().