#include </builds/gaudi/Gaudi/GaudiSvc/src/FileMgr/RootFileHandler.h>

Collaboration diagram for RootFileHandler:

Public Member Functions
	RootFileHandler (IMessageSvc *)
Io::open_t	openRootFile (const std::string &n, const Io::IoFlags &f, const std::string &desc, Io::Fd &fd, void *&ptr)
Io::close_t	closeRootFile (void *ptr)
Io::reopen_t	reopenRootFile (void *, const Io::IoFlags &)

Private Attributes
MsgStream	m_log
int	m_level

Detailed Description

Definition at line 26 of file RootFileHandler.h.

Constructor & Destructor Documentation

◆ RootFileHandler()

RootFileHandler::RootFileHandler ( IMessageSvc * msg )

Definition at line 19 of file RootFileHandler.cpp.

                                                   : m_log( msg, "RootFileHandler" ) {
  // Protect against multiple instances of TROOT
  if ( !gROOT ) { static TROOT root( "root", "ROOT I/O" ); }
  m_level = msg->outputLevel( "RootFileHandler" );
}

Member Function Documentation

◆ closeRootFile()

Io::close_t RootFileHandler::closeRootFile ( void * ptr )

Definition at line 85 of file RootFileHandler.cpp.

                                                    {
 
  if ( m_log.level() <= MSG::DEBUG ) m_log << MSG::DEBUG << "closeRootFile(ptr:" << ptr << ")" << endmsg;
 
  if ( !ptr ) {
    m_log << MSG::ERROR << "Unable to close file: ptr == 0" << endmsg;
    return -1;
  }
 
  TFile* tf = static_cast<TFile*>( ptr );
 
  try {
    tf->Close();
  } catch ( const std::exception& Exception ) {
    m_log << MSG::ERROR << "exception caught while trying to close root"
          << " file" << Exception.what() << endmsg;
    return -1;
  } catch ( ... ) {
    m_log << MSG::ERROR << "Problems closing ROOT file  \"" << tf->GetName() << "\"" << endmsg;
    return -1;
  }
 
  return 0;
}

◆ openRootFile()

Io::open_t RootFileHandler::openRootFile	(	const std::string &	n,
		const Io::IoFlags &	f,
		const std::string &	desc,
		Io::Fd &	fd,
		void *&	ptr )

Definition at line 27 of file RootFileHandler.cpp.

                                                                 {
 
  m_log.setLevel( m_level );
 
  if ( m_log.level() <= MSG::DEBUG )
    m_log << MSG::DEBUG << "openRootFile(\"" << n << "\"," << f << "," << desc << ")" << endmsg;
 
  ptr = nullptr;
  fd  = -1;
 
  std::string opt;
 
  if ( f == Io::READ ) {
    opt = "READ";
  } else if ( f == ( Io::WRITE | Io::CREATE | Io::EXCL ) ) {
    opt = "NEW";
  } else if ( f == ( Io::WRITE | Io::CREATE ) ) {
    opt = "RECREATE";
  } else if ( f | Io::APPEND ) {
    opt = "UPDATE";
  } else {
    m_log << MSG::ERROR << "Don't know how to handle IoFlag " << f << endmsg;
    return 1;
  }
 
  std::unique_ptr<TFile> tf;
 
  try {
    tf.reset( TFile::Open( n.c_str(), opt.c_str() ) );
  } catch ( const std::exception& Exception ) {
    m_log << MSG::ERROR << "exception caught while trying to open root"
          << " file for reading: " << Exception.what() << std::endl
          << "  -> file probably corrupt." << endmsg;
    return 1;
  } catch ( ... ) {
    m_log << MSG::ERROR << "Problems opening input file  \"" << n << "\": probably corrupt" << endmsg;
    return 1;
  }
 
  if ( !tf || !tf->IsOpen() ) {
    m_log << MSG::ERROR << "Unable to open ROOT file \"" << n << "\" with options \"" << opt << "\"" << endmsg;
 
    tf.reset();
    return 1;
  }
 
  fd = tf->GetFd();
 
  ptr = tf.release();
 
  if ( m_log.level() <= MSG::DEBUG ) m_log << MSG::DEBUG << "opened TFile " << ptr << " Fd: " << fd << endmsg;
 
  return 0;
}

◆ reopenRootFile()

Io::reopen_t RootFileHandler::reopenRootFile	(	void *	,
		const Io::IoFlags &	)

Definition at line 112 of file RootFileHandler.cpp.

                                                                    {
 
  m_log << MSG::ERROR << "reopen not implemented" << endmsg;
  return -1;
}

Member Data Documentation

◆ m_level

int RootFileHandler::m_level

private

Definition at line 39 of file RootFileHandler.h.

◆ m_log

MsgStream RootFileHandler::m_log