edm::streamer::OutputFile Class Reference

#include <StreamerFileIO.h>

Public Member Functions
uint32	adler32 () const
void	close ()
uint64	current_offset () const
std::string	fileName () const
	OutputFile (const std::string &name, uint32 padding=0)
void	set_current_offset (uint64 v)
void	set_do_adler (bool v)
bool	write (const char *ptr, size_t n, bool doPadding=false)
bool	writePadding ()
	~OutputFile ()

Private Attributes
uint32	adlera_
uint32	adlerb_
uint64	current_offset_
bool	do_adler_
std::string	filename_
edm::propagate_const< std::shared_ptr< std::ofstream > >	ost_
uint32	padding_
std::unique_ptr< char[]>	paddingBuf_

Detailed Description

Class representing Output (Streamer) file.

Definition at line 17 of file StreamerFileIO.h.

Constructor & Destructor Documentation

OutputFile()

edm::streamer::OutputFile::OutputFile ( const std::string &  name, uint32  padding = 0  )

explicit

Definition at line 10 of file StreamerFileIO.cc.

References Exception, Skims_PA_cff::name, ost_, edm::streamer::Header::PADDING, padding_, and paddingBuf_.

      : current_offset_(1),
        do_adler_(false),
        adlera_(1),
        adlerb_(0),
        padding_(padding),
        ost_(new std::ofstream(name.c_str(), std::ios_base::binary | std::ios_base::out)),
        filename_(name) {
    if (!ost_->is_open()) {
      throw cms::Exception("OutputFile", "OutputFile") << "Error Opening Output File: " << name << "\n";
    }
    ost_->rdbuf()->pubsetbuf(nullptr, 0);
    if (padding_) {
      paddingBuf_ = std::make_unique<char[]>(padding_);
      memset(paddingBuf_.get(), Header::PADDING, padding_);
    }
  }

~OutputFile()

edm::streamer::OutputFile::~OutputFile

(

)

CTOR, takes file path name as argument

Definition at line 28 of file StreamerFileIO.cc.

References ost_.

{ ost_->close(); }

Member Function Documentation

adler32()

uint32 edm::streamer::OutputFile::adler32 ( ) const

inline

Definition at line 34 of file StreamerFileIO.h.

References adlera_, and adlerb_.

{ return (adlerb_ << 16) | adlera_; }

close()

void edm::streamer::OutputFile::close

(

void

)

Definition at line 54 of file StreamerFileIO.cc.

References Exception, filename_, ost_, padding_, and writePadding().

Referenced by esMonitoring.AsyncLineReaderMixin::handle_close(), and esMonitoring.FDJsonServer::handle_close().

                         {
    if (padding_)
      if (writePadding())
        throw cms::Exception("OutputFile", "OutputFile")
            << "Error writing padding to the output file: " << filename_ << ": " << std::strerror(errno);
    ost_->close();
  }

current_offset()

uint64 edm::streamer::OutputFile::current_offset ( ) const

inline

Definition at line 33 of file StreamerFileIO.h.

References current_offset_.

{ return current_offset_; }

fileName()

std::string edm::streamer::OutputFile::fileName ( ) const

inline

Definition at line 32 of file StreamerFileIO.h.

References filename_.

{ return filename_; }

set_current_offset()

void edm::streamer::OutputFile::set_current_offset ( uint64  v )

inline

Definition at line 37 of file StreamerFileIO.h.

References current_offset_, and findQualityFiles::v.

{ current_offset_ = v; }

set_do_adler()

void edm::streamer::OutputFile::set_do_adler ( bool  v )

inline

Definition at line 36 of file StreamerFileIO.h.

References do_adler_, and findQualityFiles::v.

{ do_adler_ = v; }

write()

bool edm::streamer::OutputFile::write	(	const char *	ptr,
		size_t	n,
		bool	doPadding = false
	)

Definition at line 30 of file StreamerFileIO.cc.

References cms::Adler32(), adlera_, adlerb_, current_offset_, do_adler_, dqmiodumpmetadata::n, ost_, padding_, and writePadding().

Referenced by writePadding().

                                                                  {
    ost_->write(ptr, n);
    if (!ost_->fail()) {
      current_offset_ += (uint64)(n);
      if (do_adler_)
        cms::Adler32(ptr, n, adlera_, adlerb_);
      if (doPadding && padding_) {
        return writePadding();
      }
      return false;
    }
    return true;
  }

writePadding()

bool edm::streamer::OutputFile::writePadding

(

)

Definition at line 44 of file StreamerFileIO.cc.

References mod(), ost_, padding_, paddingBuf_, runTheMatrix::ret, and write().

Referenced by close(), and write().

                                {
    uint64 mod = ost_->tellp() % padding_;
    if (mod) {
      uint32 rem = padding_ - (uint32)(mod % padding_);
      bool ret = write(paddingBuf_.get(), rem, false);
      return ret;
    }
    return false;
  }

Member Data Documentation

adlera_

uint32 edm::streamer::OutputFile::adlera_

private

Definition at line 44 of file StreamerFileIO.h.

Referenced by adler32(), and write().

adlerb_

uint32 edm::streamer::OutputFile::adlerb_

private

Definition at line 45 of file StreamerFileIO.h.

Referenced by adler32(), and write().

current_offset_

uint64 edm::streamer::OutputFile::current_offset_

private

Definition at line 41 of file StreamerFileIO.h.

Referenced by current_offset(), set_current_offset(), and write().

do_adler_

bool edm::streamer::OutputFile::do_adler_

private

Location of current ioptr

Definition at line 43 of file StreamerFileIO.h.

Referenced by set_do_adler(), and write().

filename_

std::string edm::streamer::OutputFile::filename_

private

Definition at line 49 of file StreamerFileIO.h.

Referenced by close(), and fileName().

ost_

edm::propagate_const<std::shared_ptr<std::ofstream> > edm::streamer::OutputFile::ost_

private

Definition at line 48 of file StreamerFileIO.h.

Referenced by close(), OutputFile(), write(), writePadding(), and ~OutputFile().

padding_

uint32 edm::streamer::OutputFile::padding_

private

Definition at line 46 of file StreamerFileIO.h.

Referenced by close(), OutputFile(), write(), and writePadding().

paddingBuf_

std::unique_ptr<char[]> edm::streamer::OutputFile::paddingBuf_

private

Definition at line 50 of file StreamerFileIO.h.

Referenced by OutputFile(), and writePadding().