#include <IoSvc.h>

Inheritance diagram for IoSvc:

Collaboration diagram for IoSvc:

Classes
struct	FdInfos

Public Types
typedef IIoSvc::Fd	Fd

enum	IoType { INVALID = 0, READ = 1<<1, UPDATE = 1<<2, CREATE = 1<<3, RECREATE = (1<<4)+(1<<3) }
	I/O Connection types. More...

Public Member Functions
	IoSvc (const std::string &name, ISvcLocator *pSvcLocator)
	Constructor with parameters: More...

virtual	~IoSvc ()
	Destructor: More...

virtual StatusCode	initialize ()
	Gaudi Service Implementation. More...

virtual StatusCode	finalize ()

virtual StatusCode	queryInterface (const InterfaceID &riid, void **ppvInterface)

bool	has_fd (Fd fd) const
	test if a given file descriptor `fd` is known to us More...

Fd	fd (const std::string &fname) const
	retrieve the file descriptor associated with file `fname` More...

const std::string &	fname (Fd fd) const
	retrieve the file `fname` associated with file descriptor `fd` More...

IoType	mode (Fd fd) const
	retrieve the open mode associated with file descriptor `fd` More...

Fd	open (const std::string &fname, IoType mode)
	open file `fname` with open mode `mode` More...

StatusCode	close (Fd fd)
	close file `fd` More...

MsgStream &	msg () const

MsgStream &	msg (const MSG::Level lvl) const

bool	msgLvl (const MSG::Level lvl) const

Static Public Member Functions
static const InterfaceID &	interfaceID ()

static const std::string &	IoTypeName (IoType mode)

static IoType	IoTypeFromName (const std::string &name)

Private Types
typedef std::unordered_map< Fd, FdInfos >	FdMap_t

Private Member Functions
	IoSvc ()
	Default constructor: More...

Private Attributes
FdMap_t	m_fds
	map of fd->fdinfos More...

Fd	m_last_fd
	last created Fd More...

Friends
class	SvcFactory< IoSvc >

Detailed Description

Definition at line 30 of file IoSvc.h.

Member Typedef Documentation

◆ Fd

typedef IIoSvc::Fd IoSvc::Fd

Definition at line 40 of file IoSvc.h.

◆ FdMap_t

typedef std::unordered_map<Fd, FdInfos> IoSvc::FdMap_t

private

Definition at line 105 of file IoSvc.h.

Member Enumeration Documentation

◆ IoType

enum IIoSvc::IoType

inherited

I/O Connection types.

Enumerator
INVALID
READ
UPDATE
CREATE
RECREATE

Definition at line 39 of file IIoSvc.h.

                 { 
     INVALID  = 0,
     READ     = 1<<1,
     UPDATE   = 1<<2,
     CREATE   = 1<<3,
     RECREATE = (1<<4)+(1<<3) 
   };

Constructor & Destructor Documentation

◆ IoSvc() [1/2]

IoSvc::IoSvc	(	const std::string &	name,
		ISvcLocator *	pSvcLocator
	)

Constructor with parameters:

Definition at line 31 of file IoSvc.cxx.

                                          : 
   ::AthService( name, pSvcLocator ),
   m_fds(),
   m_last_fd(3) // 1==cout, 2==cerr, 3==clog
 {
   //
   // Property declaration
   // 
   //declareProperty( "Property", m_nProperty );
  
 }

◆ ~IoSvc()

IoSvc::~IoSvc ( )

virtual

Destructor:

Definition at line 46 of file IoSvc.cxx.

47 {}

◆ IoSvc() [2/2]

IoSvc::IoSvc ( )

private

Default constructor:

Member Function Documentation

◆ close()

StatusCode IoSvc::close ( Fd fd )

virtual

close file fd

Implements IIoSvc.

Definition at line 165 of file IoSvc.cxx.

 {
   FdMap_t::const_iterator itr = m_fds.find(fd);
   if (itr != m_fds.end()) {
     m_fds.erase(itr);
     return StatusCode::SUCCESS;
   }
   return StatusCode::FAILURE;
 }

◆ fd()

Fd IoSvc::fd ( const std::string & fname ) const

virtual

retrieve the file descriptor associated with file fname

Returns: -1 if no such fname is known

Implements IIoSvc.

Definition at line 97 of file IoSvc.cxx.

 {
   for (FdMap_t::const_iterator 
          itr = m_fds.begin(),
          iend= m_fds.end();
        itr != iend;
        ++itr) {
     if (itr->second.fname == fname) {
       return itr->first;
     }
   }
   return -1;
 }

◆ finalize()

StatusCode IoSvc::finalize ( )

virtual

Definition at line 58 of file IoSvc.cxx.

 {
   ATH_MSG_INFO ("Finalizing " << name() << "...");
  
   return StatusCode::SUCCESS;
 }

◆ fname()

const std::string & IoSvc::fname ( Fd fd ) const

virtual

retrieve the file fname associated with file descriptor fd

Returns: empty string if no such fd is known

Implements IIoSvc.

Definition at line 114 of file IoSvc.cxx.

 {
   FdMap_t::const_iterator itr = m_fds.find(fd);
   if (itr != m_fds.end()) {
     return itr->second.fname;
   }
   static const std::string s_empty = "";
   return s_empty;
 }

◆ has_fd()

bool IoSvc::has_fd ( Fd fd ) const

virtual

test if a given file descriptor fd is known to us

Implements IIoSvc.

Definition at line 89 of file IoSvc.cxx.

 {
   return m_fds.find(fd) != m_fds.end();
 }

◆ initialize()

StatusCode IoSvc::initialize ( )

virtual

Gaudi Service Implementation.

Definition at line 51 of file IoSvc.cxx.

 {
   ATH_MSG_INFO ("Initializing " << name() << "...");
  
   return StatusCode::SUCCESS;
 }

◆ interfaceID()

const InterfaceID & IoSvc::interfaceID ( )

inlinestatic

Definition at line 121 of file IoSvc.h.

 { 
   return IIoSvc::interfaceID(); 
 }

◆ IoTypeFromName()

static IoType IIoSvc::IoTypeFromName ( const std::string & name )

inlinestaticinherited

Definition at line 61 of file IIoSvc.h.

                                                {
     static std::map<std::string, IoType> s_names;
     if (s_names.empty()) {
       s_names[""] = INVALID;
       s_names["READ"] = READ;
       s_names["UPDATE"] = UPDATE;
       s_names["CREATE"] = CREATE;
       s_names["RECREATE"] = RECREATE;
     }
     return s_names[name];
   }

◆ IoTypeName()

static const std::string& IIoSvc::IoTypeName ( IoType mode )

inlinestaticinherited

Definition at line 48 of file IIoSvc.h.

                                            {
     static std::map<IoType, std::string> s_names;
     if (s_names.empty()) {
       s_names[INVALID] = "";
       s_names[READ] = "READ";
       s_names[UPDATE] = "UPDATE";
       s_names[CREATE] = "CREATE";
       s_names[RECREATE] = "RECREATE";
     }
     return s_names[mode];
   }

◆ mode()

IoType IoSvc::mode ( Fd fd ) const

virtual

retrieve the open mode associated with file descriptor fd

Implements IIoSvc.

Definition at line 126 of file IoSvc.cxx.

 {
   FdMap_t::const_iterator itr = m_fds.find(fd);
   if (itr != m_fds.end()) {
     return itr->second.mode;
   }
   return IIoSvc::INVALID;
 }

◆ msg() [1/2]

MsgStream& AthCommonMsg< Service >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                 {
     return this->msgStream();
   }

◆ msg() [2/2]

MsgStream& AthCommonMsg< Service >::msg ( const MSG::Level lvl ) const

inlineinherited

Definition at line 27 of file AthCommonMsg.h.

                                                   {
     return this->msgStream(lvl);
   }

◆ msgLvl()

bool AthCommonMsg< Service >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                                {
     return this->msgLevel(lvl);
   }

◆ open()

Fd IoSvc::open	(	const std::string &	fname,
		IoType	mode
	)

virtual

open file fname with open mode mode

Returns: -1 if not successful

Implements IIoSvc.

Definition at line 138 of file IoSvc.cxx.

 {
   // check this `fname` hasn't been already associated.
   Fd fd = this->fd(fname);
   if (fd == -1) {
     // FIXME: use a recycle bin of fds ?
     if ( m_last_fd == (std::numeric_limits<Fd>::max()-1)) {
       ATH_MSG_ERROR("too many file descriptors opened!");
       return -1;
     }
     fd = ++m_last_fd;
     FdInfos infos = {fname, mode};
     m_fds.insert(std::make_pair(fd, infos));
     return fd;
   }
  
   // check the previous open mode is the same
   if (mode == this->mode(fd)) {
     return fd;
   }
  
   // inconsistency...
   return -1;
 }

◆ queryInterface()

StatusCode IoSvc::queryInterface	(	const InterfaceID &	riid,
		void **	ppvInterface
	)

virtual

Definition at line 71 of file IoSvc.cxx.

 {
   if ( IIoSvc::interfaceID().versionMatch(riid) ) {
     *ppvInterface = dynamic_cast<IIoSvc*>(this);
   } else {
     // Interface is not directly available : try out a base class
     return ::AthService::queryInterface(riid, ppvInterface);
   }
   addRef();
   return StatusCode::SUCCESS;
 }

Friends And Related Function Documentation

◆ SvcFactory< IoSvc >

friend class SvcFactory< IoSvc >

friend

Definition at line 121 of file IoSvc.h.

Member Data Documentation

◆ m_fds

FdMap_t IoSvc::m_fds

private

map of fd->fdinfos

Definition at line 108 of file IoSvc.h.

◆ m_last_fd

Fd IoSvc::m_last_fd

private

last created Fd

Definition at line 111 of file IoSvc.h.

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

Classes

Public Types

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ Fd

◆ FdMap_t

Member Enumeration Documentation

◆ IoType

Constructor & Destructor Documentation

◆ IoSvc() [1/2]

◆ ~IoSvc()

◆ IoSvc() [2/2]

Member Function Documentation

◆ close()

◆ fd()

◆ finalize()

◆ fname()

◆ has_fd()

◆ initialize()

◆ interfaceID()

◆ IoTypeFromName()

◆ IoTypeName()

◆ mode()

◆ msg() [1/2]

◆ msg() [2/2]

◆ msgLvl()

◆ open()

◆ queryInterface()

Friends And Related Function Documentation

◆ SvcFactory< IoSvc >

Member Data Documentation

◆ m_fds

◆ m_last_fd