JNET::JControlHostObjectIterator< T > Class Template Reference

Object iteration through ControlHost. More...

#include <JControlHostObjectIterator.hh>

Inheritance diagram for JNET::JControlHostObjectIterator< T >:

Public Types
typedef JObjectIterator< T >::pointer_type	pointer_type

Public Member Functions
	JControlHostObjectIterator (const JHostname &server, const JSubscription &subscription, JTimeval timeout=JTimeval::max())
	Constructor. More...
	JControlHostObjectIterator (const JHostname &server, JTimeval timeout=JTimeval::max(), bool all=true)
	Constructor. More...
virtual bool	setObject (T &object) override
	Set object. More...
int	Subscribe (const JSubscription &subscription)
	Subscribe to single tag. More...
int	Subscribe (const JSubscriptionList &subscription)
	Subscribe to list of tags. More...
int	MyId (const std::string &nick_name)
	Identify. More...
int	SendMeNext ()
	Tell server to send next message. More...
int	SendMeAlways ()
	Tell server to send messages forever. More...
int	PutFullData (const JTag &tag, const void *buffer, const long long int length)
	Send data. More...
int	PutFullData (const std::string &tag, const void *buffer, const long long int length)
	Send data. More...
int	PutFullString (const JTag &tag, const std::string &buffer)
	Send string. More...
int	PutFullString (const std::string &tag, const std::string &buffer)
	Send string. More...
int	Connected ()
	Send version. More...
int	WaitHead (JPrefix &prefix)
	Wait for header. More...
int	WaitHead (std::string &tag, long long int &length)
	Wait for header. More...
int	CheckHead (JPrefix &prefix, JTimeval timeout=JTimeval::min())
	Check for header, without waiting. More...
int	CheckHead (std::string &tag, long long int &length, const int timeout_us=0)
	Check for header, without waiting. More...
int	GetFullData (void *buffer, long long int length)
	Receive data. More...
int	GetFullString (std::string &buffer)
	Receive string. More...
int	configure ()
	Configure socket (factory reset). More...
int	read (char *buffer, const int length) override
	Read data from socket. More...
int	write (const char *buffer, const int length) override
	Write data to socket. More...
void	setNonBlocking (const bool on)
	Set non-blocking of I/O. More...
bool	getNonBlocking () const
	Get non-blocking of I/O. More...
void	setKeepIdle (const int t_s)
	Set the TCP idle time. More...
void	setKeepCnt (const int count)
	Set the TCP idle count. More...
void	setKeepIntvl (const int t_s)
	Set the TCP interval time. More...
void	setTcpNoDelay (const bool on)
	Set TCP no-delay. More...
bool	getTcpNoDelay () const
	Get TCP no-delay. More...
void	accept (const int server)
	Accept connection from a server. More...
void	connect (const int port)
	Connect to port on local host. More...
void	connect (const JHostname &hostname)
	Connect to port on specified host. More...
void	connect (const std::string &hostname, const int port)
	Connect to port on specified host. More...
void	connect (const int ip_number, const int port)
	Connect to port on specified host. More...
int	shutdown ()
	Shut down socket. More...
void	setKeepAlive (const bool on)
	Set keep alive of socket. More...
bool	getKeepAlive () const
	Get keep alive of socket. More...
void	setReuseAddress (const bool on)
	Set reuse address. More...
bool	getReuseAddress () const
	Get reuse address. More...
void	setReceiveBufferSize (const int size)
	Set receive buffer size. More...
int	getReceiveBufferSize () const
	Set receive buffer size. More...
void	setSendBufferSize (const int size)
	Set send buffer size. More...
int	getSendBufferSize () const
	Get send buffer size. More...
int	close ()
	Close file. More...
bool	in_avail (JTimeval timeout=JTimeval::min()) const
	Check availability of input. More...
bool	out_avail (JTimeval timeout=JTimeval::min()) const
	Check availability of output. More...
virtual bool	good () const
	Check status. More...
virtual bool	fail () const
	Check status. More...
virtual bool	bad () const
	Check status. More...
virtual bool	eof () const
	Check end of file. More...
bool	less (const JAbstractFile &file) const
	Less than operation. More...
int	getFileDescriptor () const
	Get file descriptor. More...
void	setFileDescriptor (const int file)
	Set file descriptor. More...
bool	is_open () const
	Get open status. More...
const sockaddr *	getSockaddr () const
	Get sockaddr. More...
sockaddr *	getSockaddr ()
	Get sockaddr. More...
int	getFamily () const
	Get family. More...
void	setFamily (const int family)
	Set family. More...
std::string	getHostname () const
	Get host name. More...
int	getIPnumber () const
	Get IP number. More...
void	setIPnumber (const int ip_number)
	Set IP number. More...
void	setIPnumber ()
	Set any IP number. More...
int	getPort () const
	Get port number. More...
void	setPort (const int port)
	Set port number. More...
virtual bool	hasNext () override
	Check availability of next element. More...
virtual const pointer_type &	next () override
	Get next element. More...
virtual skip_type	skip (const skip_type ns)
	Skip items. More...
const JTimeval &	getTimeval () const
	Get time value. More...
JTimeval &	getTimeval ()
	Get time value. More...
void	setTimeval (const JTimeval &timeval)
	Set time value. More...
bool	less (const JTimeval &value) const
	Less than method. More...
const timeval *	get () const
	Get pointer to time value. More...
timeval *	get ()
	Get pointer to time value. More...
const timeval *	operator& () const
	Address of operator. More...
timeval *	operator& ()
	Address of operator. More...

Static Public Member Functions
static bool	maybe_special (const JTag &tag)
	Check special ControlHost tags. More...
static bool	is_valid (const char c)
	Check validity of subscription specifier. More...
static int	WhereIs (const std::string &host_name, const std::string &nick_name, std::string &answer)
	Locate ControlHost client(s). More...
static const int	getDefaultBufferSize ()
	Default socket buffer size to be used on this system. More...
static int	sizeOf ()
	Get size of object. More...
static void	Throw (const bool option)
	Enable/disable throw option. More...
static int	Throw (const JException_t &error, const int value=-1)
	Throw exception or return error. More...
static JTimeval	min ()
	Get minimal time value. More...
static JTimeval	max ()
	Get maximal time value. More...

Static Public Attributes
static const int	FILE_CLOSED = -1

Protected Member Functions
template<class T >
void	setOption (const int level, const int option, const T value)
	Set socket option. More...
template<class T >
T	getOption (const int level, const int option) const
	Get socket option. More...

Protected Attributes
int	fileDescriptor
T	object
	object More...
bool	has_next
	status More...

Static Protected Attributes
static bool	do_throw
	throw option More...

Private Attributes
JPrefix	prefix
std::vector< char >	buffer
int	result
pointer_type	ps

Detailed Description

template<class T>
class JNET::JControlHostObjectIterator< T >

Object iteration through ControlHost.

This class implements the JLANG::JObjectIterator interface.

Definition at line 31 of file JControlHostObjectIterator.hh.

Member Typedef Documentation

pointer_type

template<class T >

typedef JObjectIterator<T>::pointer_type JLANG::JAbstractObjectIterator< T >::pointer_type

inherited

Definition at line 39 of file JAbstractObjectIterator.hh.

Constructor & Destructor Documentation

JControlHostObjectIterator() [1/2]

template<class T >

JNET::JControlHostObjectIterator< T >::JControlHostObjectIterator ( const JHostname &  server, const JSubscription &  subscription, JTimeval  timeout = JTimeval::max()  )

inline

Constructor.

Parameters

server	host name and optional port number
subscription	subscription
timeout	timeout

Definition at line 44 of file JControlHostObjectIterator.hh.

                                                                             :
      JControlHost(server),
      JTimeval(timeout)
    {
      Subscribe(subscription);
    }

JControlHostObjectIterator() [2/2]

template<class T >

JNET::JControlHostObjectIterator< T >::JControlHostObjectIterator ( const JHostname &  server, JTimeval  timeout = JTimeval::max(), bool  all = true  )

inline

Constructor.

Parameters

server	host name and optional port number
timeout	timeout
all	subscribe all, subscribe any if false

Definition at line 61 of file JControlHostObjectIterator.hh.

                                                                :
      JControlHost(server),
      JTimeval(timeout)
    {
      if (all) {
        Subscribe(JSubscriptionAll(getTag<T>()));
      } else {
        Subscribe(JSubscriptionAny(getTag<T>()));
      }
    }

Member Function Documentation

setObject()

template<class T >

virtual bool JNET::JControlHostObjectIterator< T >::setObject ( T &  object )

inlineoverridevirtual

Set object.

Parameters

object

reference to object to be set

Returns

true if set; else false

Implements JLANG::JAbstractObjectIterator< T >.

Definition at line 81 of file JControlHostObjectIterator.hh.

    {
      if (this->CheckHead(prefix, this->getTimeval()) > 0) {
 
        buffer.resize(prefix.getSize());
 
        this->GetFullData(buffer.data(), buffer.size());
 
        JIO::JByteArrayReader in(buffer.data(), buffer.size());
 
        in >> object;
 
        return true;
 
      } else {
 
        return false;
      }
    }

maybe_special()

static bool JNET::JControlHost::maybe_special ( const JTag &  tag )

inlinestaticinherited

Check special ControlHost tags.

Parameters

tag

tag

Returns

true if possibly special tag; else false

Definition at line 269 of file JControlHost.hh.

    {
      return tag[0] == '_';
    }

is_valid()

static bool JNET::JControlHost::is_valid ( const char  c )

inlinestaticinherited

Check validity of subscription specifier.

Parameters

c	subscription specifier

Returns

true if valid; else false

Definition at line 281 of file JControlHost.hh.

    {
      return (c == SUBSCRIBE_ALL ||
              c == SUBSCRIBE_ANY);// ||
              //c == SUBSCRIBE_SHARED_MEMORY);
    }

Subscribe() [1/2]

int JNET::JControlHost::Subscribe ( const JSubscription &  subscription )

inlineinherited

Subscribe to single tag.

Parameters

subscription

subscription

Returns

0 if OK; -1 if socket error

Definition at line 360 of file JControlHost.hh.

    {
      return PutFullString(DISPTAG_Subscribe, subscription.toString());
    } 

Subscribe() [2/2]

int JNET::JControlHost::Subscribe ( const JSubscriptionList &  subscription )

inlineinherited

Subscribe to list of tags.

Parameters

subscription

subscription

Returns

0 if OK; -1 if socket error

Definition at line 372 of file JControlHost.hh.

    {
      return PutFullString(DISPTAG_Subscribe, subscription.toString());
    } 

MyId()

int JNET::JControlHost::MyId ( const std::string &  nick_name )

inlineinherited

Identify.

Parameters

nick_name

nick name

Returns

0 if OK; -1 if socket error

Definition at line 384 of file JControlHost.hh.

    {
      return PutFullString(DISPTAG_MyId, nick_name);
    } 

SendMeNext()

int JNET::JControlHost::SendMeNext ( )

inlineinherited

Tell server to send next message.

Returns

0 if OK; -1 if socket error

Definition at line 395 of file JControlHost.hh.

    {
      return PutFullData(DISPTAG_Gime, NULL, 0);
    } 

SendMeAlways()

int JNET::JControlHost::SendMeAlways ( )

inlineinherited

Tell server to send messages forever.

Returns

0 if OK; -1 if socket error

Definition at line 406 of file JControlHost.hh.

    {
      return PutFullData(DISPTAG_Always, NULL, 0);
    } 

PutFullData() [1/2]

int JNET::JControlHost::PutFullData ( const JTag &  tag, const void *  buffer, const long long int  length  )

inlineinherited

Send data.

Parameters

tag	tag
buffer	data
length	number of bytes

Returns

0 if OK; -1 if socket error; -2 if other error

Definition at line 420 of file JControlHost.hh.

    {
      try {
 
        JPrefix __prefix__(tag, length);
 
        write((char*) &__prefix__, sizeof(JPrefix));
 
        if (length != 0) {
          write((char*) buffer, (int) length);
        }
 
        return 0;
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    }

PutFullData() [2/2]

int JNET::JControlHost::PutFullData ( const std::string &  tag, const void *  buffer, const long long int  length  )

inlineinherited

Send data.

Parameters

tag	tag
buffer	data
length	number of bytes

Returns

0 if OK; -1 if socket error; -2 if other error

Definition at line 448 of file JControlHost.hh.

    {
      try {
        return PutFullData(JTag(tag), buffer, length);
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
      catch (const JControlHostException& error) {
        return Throw(error, -2);
      }
    }

PutFullString() [1/2]

int JNET::JControlHost::PutFullString ( const JTag &  tag, const std::string &  buffer  )

inlineinherited

Send string.

Parameters

tag	tag
buffer	data

Returns

0 if OK; -1 if socket error; -2 if other error

Definition at line 469 of file JControlHost.hh.

    {
      return PutFullData(tag, buffer.c_str(), buffer.size());
    }

PutFullString() [2/2]

int JNET::JControlHost::PutFullString ( const std::string &  tag, const std::string &  buffer  )

inlineinherited

Send string.

Parameters

tag	tag
buffer	data

Returns

0 if OK; -1 if socket error; -2 if other error

Definition at line 483 of file JControlHost.hh.

    {
      return PutFullData(tag, buffer.c_str(), buffer.size());
    }

Connected()

int JNET::JControlHost::Connected ( )

inlineinherited

Send version.

Returns

0 if OK; -1 if socket error; -2 if other error

Definition at line 495 of file JControlHost.hh.

    {
      return PutFullString(DISPTAG_Version, CHOO_VERSION);
    }

WaitHead() [1/2]

int JNET::JControlHost::WaitHead ( JPrefix &  prefix )

inlineinherited

Wait for header.

Parameters

prefix

prefix

Returns

0 if OK; -1 if socket error

Definition at line 507 of file JControlHost.hh.

    {
      try {
 
        read((char*) &this->prefix, sizeof(JPrefix));
        
        prefix = this->prefix;
 
        return 0;
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    }

WaitHead() [2/2]

int JNET::JControlHost::WaitHead ( std::string &  tag, long long int &  length  )

inlineinherited

Wait for header.

Parameters

tag	tag
length	number of bytes

Returns

0 if OK; -1 if socket error

Definition at line 530 of file JControlHost.hh.

    {
      const int rvalue = WaitHead(this->prefix);
 
      if (rvalue == 0) {
        tag    = this->prefix.getTag();
        length = this->prefix.getSize();
      }
 
      return rvalue;
    }

CheckHead() [1/2]

int JNET::JControlHost::CheckHead ( JPrefix &  prefix, JTimeval  timeout = JTimeval::min()  )

inlineinherited

Check for header, without waiting.

Parameters

prefix	prefix
timeout	timeout

Returns

1 if header; 0 if no header; -1 if socket error

Definition at line 550 of file JControlHost.hh.

    {
      try {
 
        if (in_avail(timeout)) {
 
          WaitHead(prefix);
 
          return 1;
 
        } else {
 
          return 0;
        }
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    }

CheckHead() [2/2]

int JNET::JControlHost::CheckHead ( std::string &  tag, long long int &  length, const int  timeout_us = 0  )

inlineinherited

Check for header, without waiting.

Parameters

tag	tag
length	number of bytes
timeout_us	timeout [us]

Returns

1 if header; 0 if no header; -1 if socket error

Definition at line 579 of file JControlHost.hh.

    {
      const int rvalue = CheckHead(this->prefix, timeout_us);
 
      if (rvalue == 1) {
        tag    = this->prefix.getTag();
        length = this->prefix.getSize();
      }
 
      return rvalue;
    }

GetFullData()

int JNET::JControlHost::GetFullData ( void *  buffer, long long int  length  )

inlineinherited

Receive data.

Parameters

buffer	data
length	number of bytes

Returns

0 if OK; -1 if socket error

Definition at line 599 of file JControlHost.hh.

    {
      try {
 
        read((char*) buffer, (int) length);
 
        return 0;
      } 
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    }

GetFullString()

int JNET::JControlHost::GetFullString ( std::string &  buffer )

inlineinherited

Receive string.

Parameters

buffer

data

Returns

0 if OK; -1 if socket error

Definition at line 619 of file JControlHost.hh.

    {
      buffer.resize(this->prefix.getSize());
      
      return GetFullData((char*) buffer.data(), buffer.size());
    }

WhereIs()

static int JNET::JControlHost::WhereIs ( const std::string &  host_name, const std::string &  nick_name, std::string &  answer  )

inlinestaticinherited

Locate ControlHost client(s).

Parameters

host_name	host name
nick_name	nick name
answer	list of host names

Returns

0 if OK; -1 if socket error

Definition at line 635 of file JControlHost.hh.

    {
      try {
 
        using namespace std;
 
        JControlHost socket(host_name);
        
        socket.PutFullString(DISPTAG_WhereIs, nick_name);
        
        string        tag;
        long long int length;
        
        socket.WaitHead(tag, length);
        socket.GetFullString(answer);
 
        return 0;
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    } 

configure()

int JNET::JControlHost::configure ( )

inlineinherited

Configure socket (factory reset).

Returns

0 if OK; -1 if socket error

Definition at line 666 of file JControlHost.hh.

    {
      try {
 
        setTcpNoDelay  (true);
        setReuseAddress(true);
        setKeepAlive   (true);
        setSendBufferSize   (128*1024);
        setReceiveBufferSize(128*1024);
        setNonBlocking (false);
 
        return 0;
      }
      catch (const JSocketException& error) {
        return Throw(error, -1);
      }
    } 

read()

int JNET::JSocketBlocking::read ( char *  buffer, const int  length  )

inlineoverridevirtualinherited

Read data from socket.

Parameters

buffer	buffer
length	number of bytes to read

Returns

number of bytes read

Reimplemented from JNET::JSocket.

Definition at line 52 of file JSocketBlocking.hh.

    {
      char* data = buffer;
      int   size = length;
                  
      while (size != 0) { 
        
        const int pos = JSocket::read(data, size);
        
        if (pos != 0) {
          data += pos;
          size -= pos;
        } else {
          in_avail(1);
        }
      }
 
      return length - size;
    }

write()

int JNET::JSocketBlocking::write ( const char *  buffer, const int  length  )

inlineoverridevirtualinherited

Write data to socket.

Parameters

buffer	buffer
length	number of bytes to write

Returns

number of bytes written

Reimplemented from JNET::JSocket.

Definition at line 80 of file JSocketBlocking.hh.

    {
      const char* data = buffer;
      int         size = length;
                  
      while (size != 0) { 
        
        const int pos = JSocket::write(data, size);
        
        if (pos != 0) {
          data += pos;
          size -= pos;
        } else {
          out_avail(1);
        }
      }
 
      return length - size;
    }

setNonBlocking()

void JNET::JTCPSocket::setNonBlocking ( const bool  on )

inlineinherited

Set non-blocking of I/O.

Parameters

on	true to enable non-blocking; false to disable

Definition at line 56 of file JTCPSocket.hh.

    {
      const int flags = fcntl(getFileDescriptor(), F_GETFL, -1);
      const int mask  = FNDELAY;
 
      if (flags == -1) {
        THROW(JSocketException, "Get socket option failed " << errno);
      }
 
      if (((flags & mask) != mask &&  on) ||
          ((flags & mask) != 0    && !on) ) {
 
        if (fcntl(getFileDescriptor(), F_SETFL, flags ^ mask) < 0) {
          THROW(JSocketException, "Set socket option failed " << errno);
        }
      }
    }

getNonBlocking()

bool JNET::JTCPSocket::getNonBlocking ( ) const

inlineinherited

Get non-blocking of I/O.

Returns

true if enabled non-blocking; else false

Definition at line 80 of file JTCPSocket.hh.

    {
      const int flags = fcntl(getFileDescriptor(), F_GETFL, -1);
      const int mask  = FNDELAY;
 
      if (flags == -1) {
        THROW(JSocketException, "Get socket option failed " << errno);
      }
 
      return ((flags & mask) != 0);
    }

setKeepIdle()

void JNET::JTCPSocket::setKeepIdle ( const int  t_s )

inlineinherited

Set the TCP idle time.

Parameters

t_s

time [s]

Definition at line 98 of file JTCPSocket.hh.

    {
      setOption(IPROTO_TCP, TCP_KEEPIDLE, t_s);
    }

setKeepCnt()

void JNET::JTCPSocket::setKeepCnt ( const int  count )

inlineinherited

Set the TCP idle count.

Parameters

count

count

Definition at line 109 of file JTCPSocket.hh.

    {
      setOption(IPROTO_TCP, TCP_KEEPCNT, count);
    }

setKeepIntvl()

void JNET::JTCPSocket::setKeepIntvl ( const int  t_s )

inlineinherited

Set the TCP interval time.

Parameters

t_s

time [s]

Definition at line 120 of file JTCPSocket.hh.

    {
      setOption(IPROTO_TCP, TCP_KEEPINTVL, t_s);
    }

setTcpNoDelay()

void JNET::JTCPSocket::setTcpNoDelay ( const bool  on )

inlineinherited

Set TCP no-delay.

Parameters

on	true to set TCP no-delay; false to disable

Definition at line 131 of file JTCPSocket.hh.

    {
      setOption(IPPROTO_TCP, TCP_NODELAY, int(on ? 1 : 0));
    }

getTcpNoDelay()

bool JNET::JTCPSocket::getTcpNoDelay ( ) const

inlineinherited

Get TCP no-delay.

Returns

true if TCP no-delay; else false

Definition at line 142 of file JTCPSocket.hh.

    {
      return (getOption<int>(IPPROTO_TCP, TCP_NODELAY) == 1);
    }

accept()

void JNET::JTCPSocket::accept ( const int  server )

inlineinherited

Accept connection from a server.

Parameters

server

file descriptor of TCP server socket

Definition at line 153 of file JTCPSocket.hh.

    {
      socklen_t size = sizeof(sockaddr_in);
 
      fileDescriptor = ::accept(server, getSockaddr(), &size);
    }

connect() [1/4]

void JNET::JTCPSocket::connect ( const int  port )

inlineinherited

Connect to port on local host.

Parameters

port	port number

Definition at line 166 of file JTCPSocket.hh.

    {
      connect(INADDR_ANY, port);
    }

connect() [2/4]

void JNET::JTCPSocket::connect ( const JHostname &  hostname )

inlineinherited

Connect to port on specified host.

Parameters

hostname

host name

Definition at line 177 of file JTCPSocket.hh.

    {
      connect(hostname.hostname, hostname.port);
    }

connect() [3/4]

void JNET::JTCPSocket::connect ( const std::string &  hostname, const int  port  )

inlineinherited

Connect to port on specified host.

Parameters

hostname	host name
port	port number

Definition at line 189 of file JTCPSocket.hh.

    {
      connect(JSYSTEM::getIPnumber(hostname), port);
    }

connect() [4/4]

void JNET::JTCPSocket::connect ( const int  ip_number, const int  port  )

inlineinherited

Connect to port on specified host.

Parameters

ip_number	IP number
port	port number

Definition at line 201 of file JTCPSocket.hh.

    {
      setIPnumber(ip_number);
      setPort(port);
 
      if (::connect(getFileDescriptor(), getSockaddr(), sizeof(sockaddr_in)) < 0) {
        THROW(JSocketException, "Socket connection failed " << JSYSTEM::getIPaddress(ip_number) << ":" << port << " / " << getFileDescriptor() << " " << errno);
      }
    }

getDefaultBufferSize()

static const int JNET::JSocket::getDefaultBufferSize ( )

inlinestaticinherited

Default socket buffer size to be used on this system.

Returns

number of bytes

Definition at line 75 of file JSocket.hh.

    {
#if __APPLE__
         return JMATH::MEGABYTE;
#else
         return JMATH::GIGABYTE;
#endif
    }

shutdown()

int JNET::JSocket::shutdown ( )

inlineinherited

Shut down socket.

Returns

return value

Definition at line 89 of file JSocket.hh.

    {
      const int value = ::shutdown(getFileDescriptor(), SHUT_RDWR);
 
      close();
 
      return value;
    }

setKeepAlive()

void JNET::JSocket::setKeepAlive ( const bool  on )

inlineinherited

Set keep alive of socket.

Parameters

on	true to enable keep alive; false to disable

Definition at line 104 of file JSocket.hh.

    {
      setOption(SOL_SOCKET, SO_KEEPALIVE, int(on ? 1 : 0));
    }

getKeepAlive()

bool JNET::JSocket::getKeepAlive ( ) const

inlineinherited

Get keep alive of socket.

Returns

true if keep alive; else false

Definition at line 115 of file JSocket.hh.

    {
      return (getOption<int>(SOL_SOCKET, SO_KEEPALIVE) == 1);
    }

setReuseAddress()

void JNET::JSocket::setReuseAddress ( const bool  on )

inlineinherited

Set reuse address.

Parameters

on	true to enable reuse address; false to disable

Definition at line 126 of file JSocket.hh.

    {
      setOption(SOL_SOCKET, SO_REUSEADDR, int(on ? 1 : 0));
    }

getReuseAddress()

bool JNET::JSocket::getReuseAddress ( ) const

inlineinherited

Get reuse address.

Returns

true if enable reuse address; else false

Definition at line 137 of file JSocket.hh.

    {
      return (getOption<int>(SOL_SOCKET, SO_REUSEADDR) == 1);
    }

setReceiveBufferSize()

void JNET::JSocket::setReceiveBufferSize ( const int  size )

inlineinherited

Set receive buffer size.

Parameters

size	number of bytes

Definition at line 148 of file JSocket.hh.

    {
      setOption(SOL_SOCKET, SO_RCVBUF, int(size));
    }

getReceiveBufferSize()

int JNET::JSocket::getReceiveBufferSize ( ) const

inlineinherited

Set receive buffer size.

Returns

number of bytes

Definition at line 159 of file JSocket.hh.

    {
      return getOption<int>(SOL_SOCKET, SO_RCVBUF);
    }

setSendBufferSize()

void JNET::JSocket::setSendBufferSize ( const int  size )

inlineinherited

Set send buffer size.

Parameters

size	number of bytes

Definition at line 170 of file JSocket.hh.

    {
      setOption(SOL_SOCKET, SO_SNDBUF, int(size));
    }

getSendBufferSize()

int JNET::JSocket::getSendBufferSize ( ) const

inlineinherited

Get send buffer size.

Returns

number of bytes

Definition at line 181 of file JSocket.hh.

    {
      return getOption<int>(SOL_SOCKET, SO_SNDBUF);
    }

setOption()

template<class T >

void JNET::JSocket::setOption ( const int  level, const int  option, const T  value  )

inlineprotectedinherited

Set socket option.

Parameters

level	level
option	option
value	value

Definition at line 274 of file JSocket.hh.

    {
      socklen_t size = sizeof(T);
 
      if (setsockopt(getFileDescriptor(), level, option, &value, size) < 0) {
        THROW(JSocketException, "Set socket option failed " << errno);
      }
    }

getOption()

template<class T >

T JNET::JSocket::getOption ( const int  level, const int  option  ) const

inlineprotectedinherited

Get socket option.

Parameters

level	level
option	option

Returns

value

Definition at line 292 of file JSocket.hh.

    {
      T         value;
      socklen_t size  = sizeof(T);
 
      if (getsockopt(getFileDescriptor(), level, option, &value, &size) < 0) {
        THROW(JSocketException, "Get socket option failed " << errno);
      }
 
      return value;
    }

close()

int JLANG::JFile::close ( )

inlineinherited

Close file.

Returns

return value

Definition at line 57 of file JFile.hh.

    {
      int value = -1;
 
      if (fileDescriptor != FILE_CLOSED) {
 
        value = ::close(fileDescriptor);
 
        fileDescriptor = FILE_CLOSED;
        result         = 0;
      }
 
      return value;
    }

in_avail()

bool JLANG::JFile::in_avail ( JTimeval  timeout = JTimeval::min() ) const

inlineinherited

Check availability of input.

This method returns true if at least one byte can be read without blocking.

Parameters

timeout

timeout

Returns

true if ready to read; else false

Definition at line 106 of file JFile.hh.

    {
      return JFileDescriptorMask(*this).in_avail(timeout);
    }

out_avail()

bool JLANG::JFile::out_avail ( JTimeval  timeout = JTimeval::min() ) const

inlineinherited

Check availability of output.

This method returns true if at least one byte can be written without blocking.

Parameters

timeout

timeout

Returns

true if ready to write; else false

Definition at line 119 of file JFile.hh.

    {
      return JFileDescriptorMask(*this).out_avail(timeout);
    }

good()

virtual bool JLANG::JFile::good ( ) const

inlinevirtualinherited

Check status.

Returns

true if last I/O operation successful; else false

Definition at line 130 of file JFile.hh.

    {
      return is_open() && !eof() && !bad();
    }

fail()

virtual bool JLANG::JFile::fail ( ) const

inlinevirtualinherited

Check status.

Returns

true if last I/O operation caused logical error; else false

Definition at line 141 of file JFile.hh.

    {
      return result == 0;
    }

bad()

virtual bool JLANG::JFile::bad ( ) const

inlinevirtualinherited

Check status.

Returns

true if last I/O operation caused read/write error; else false

Definition at line 152 of file JFile.hh.

    {
      return fail();
    }

eof()

virtual bool JLANG::JFile::eof ( ) const

inlinevirtualinherited

Check end of file.

Returns

true if end of file; else false

Definition at line 163 of file JFile.hh.

    {
      return result == EOF;
    }

less() [1/2]

bool JLANG::JAbstractFile::less ( const JAbstractFile &  file ) const

inlineinherited

Less than operation.

Parameters

file	JAbstractFile to be compared

Returns

true if this file descriptor is less; else false

Definition at line 64 of file JAbstractFile.hh.

    {
      return getFileDescriptor() < file.getFileDescriptor();
    }

getFileDescriptor()

int JLANG::JAbstractFile::getFileDescriptor ( ) const

inlineinherited

Get file descriptor.

Returns

file descriptor

Definition at line 75 of file JAbstractFile.hh.

    {
      return fileDescriptor;
    }

setFileDescriptor()

void JLANG::JAbstractFile::setFileDescriptor ( const int  file )

inlineinherited

Set file descriptor.

Parameters

file	file descriptor

Definition at line 86 of file JAbstractFile.hh.

    {
      fileDescriptor = file;
    }

is_open()

bool JLANG::JAbstractFile::is_open ( ) const

inlineinherited

Get open status.

Definition at line 95 of file JAbstractFile.hh.

    {
      return fileDescriptor != FILE_CLOSED;
    }

getSockaddr() [1/2]

const sockaddr* JNET::JSocketAddress::getSockaddr ( ) const

inlineinherited

Get sockaddr.

Returns

pointer to sockaddr structure

Definition at line 44 of file JSocketAddress.hh.

    {
      return (const sockaddr*) static_cast<const sockaddr_in*>(this);
    }

getSockaddr() [2/2]

sockaddr* JNET::JSocketAddress::getSockaddr ( )

inlineinherited

Get sockaddr.

Returns

pointer to sockaddr structure

Definition at line 55 of file JSocketAddress.hh.

    {
      return (sockaddr*) static_cast<sockaddr_in*>(this);
    }

getFamily()

int JNET::JSocketAddress::getFamily ( ) const

inlineinherited

Get family.

Returns

family

Definition at line 66 of file JSocketAddress.hh.

    {
      return sin_family;
    }

setFamily()

void JNET::JSocketAddress::setFamily ( const int  family )

inlineinherited

Set family.

Parameters

family

family

Definition at line 77 of file JSocketAddress.hh.

    {
      sin_family = family;
    }

getHostname()

std::string JNET::JSocketAddress::getHostname ( ) const

inlineinherited

Get host name.

Returns

host name

Definition at line 88 of file JSocketAddress.hh.

    {
      return JSYSTEM::getHostname(this->getIPnumber());
    }

getIPnumber()

int JNET::JSocketAddress::getIPnumber ( ) const

inlineinherited

Get IP number.

Returns

IP number

Definition at line 99 of file JSocketAddress.hh.

    {
      return sin_addr.s_addr;
    }

setIPnumber() [1/2]

void JNET::JSocketAddress::setIPnumber ( const int  ip_number )

inlineinherited

Set IP number.

Parameters

ip_number

IP number

Definition at line 110 of file JSocketAddress.hh.

    {
      sin_addr.s_addr = ip_number;
    }

setIPnumber() [2/2]

void JNET::JSocketAddress::setIPnumber ( )

inlineinherited

Set any IP number.

Definition at line 119 of file JSocketAddress.hh.

    {
      sin_addr.s_addr = htonl(INADDR_ANY);
    }

getPort()

int JNET::JSocketAddress::getPort ( ) const

inlineinherited

Get port number.

Returns

port number

Definition at line 130 of file JSocketAddress.hh.

    {
      return ntohs(this->sin_port);
    }

setPort()

void JNET::JSocketAddress::setPort ( const int  port )

inlineinherited

Set port number.

Parameters

port	port number

Definition at line 141 of file JSocketAddress.hh.

    {
      if (port >= 0 && port <= std::numeric_limits<u_short>::max())
        sin_port = htons((u_short) port);
      else
        THROW(JCastException, "JSocketAddress::setPort() illegal value.");
    }

sizeOf()

static int JNET::JSocketAddress::sizeOf ( )

inlinestaticinherited

Get size of object.

Returns

number of bytes

Definition at line 155 of file JSocketAddress.hh.

    {
      return sizeof(sockaddr_in);
    }

Throw() [1/2]

static void JLANG::JThrow< JControlHost >::Throw ( const bool  option )

inlinestaticinherited

Enable/disable throw option.

Parameters

option

true enable; false disable

Definition at line 37 of file JThrow.hh.

    {
      do_throw = option;
    }

Throw() [2/2]

static int JLANG::JThrow< JControlHost >::Throw ( const JException_t &  error, const int  value = -1  )

inlinestaticinherited

Throw exception or return error.

Parameters

error	exception
value	return code

Returns

return code

Definition at line 51 of file JThrow.hh.

    {
      using namespace std;
      
      if (do_throw) {
        throw error;
      }
 
      cerr << error.what() << endl;
      
      return value;
    }

hasNext()

template<class T >

virtual bool JLANG::JAbstractObjectIterator< T >::hasNext ( )

inlineoverridevirtualinherited

Check availability of next element.

Returns

true if the iteration has more elements; else false

Implements JLANG::JObjectIterator< T >.

Definition at line 56 of file JAbstractObjectIterator.hh.

    {
      if (!has_next) {
        has_next = this->setObject(object);
      }
 
      return has_next;
    }

next()

template<class T >

virtual const pointer_type& JLANG::JAbstractObjectIterator< T >::next ( )

inlineoverridevirtualinherited

Get next element.

Returns

pointer to element

Implements JLANG::JObjectIterator< T >.

Definition at line 71 of file JAbstractObjectIterator.hh.

    {
      if (has_next)
        ps.reset(&this->object);
      else
        ps.reset(NULL);
 
      has_next = false;
      
      return ps;
    }

skip()

template<class T >

virtual skip_type JLANG::JObjectIterator< T >::skip ( const skip_type  ns )

inlinevirtualinherited

Skip items.

Parameters

ns	number of items to skip

Returns

number of items skipped

Reimplemented in JLANG::JSTDObjectIterator< T >, JLANG::JPipe< T >, JLANG::JPipe< JTail_t >, JLANG::JPipe< JHead_t >, and JLANG::JAbstractObjectReader< T >.

Definition at line 90 of file JObjectIterator.hh.

    {
      skip_type i = 0;
 
      for ( ; i != ns && hasNext(); ++i) {
        next();
      }
 
      return i;
    }

getTimeval() [1/2]

const JTimeval& JLANG::JTimeval::getTimeval ( ) const

inlineinherited

Get time value.

Returns

time value

Definition at line 71 of file JTimeval.hh.

    {
      return static_cast<const JTimeval&>(*this);
    }

getTimeval() [2/2]

JTimeval& JLANG::JTimeval::getTimeval ( )

inlineinherited

Get time value.

Returns

time value

Definition at line 82 of file JTimeval.hh.

    {
      return static_cast<JTimeval&>(*this);
    }

setTimeval()

void JLANG::JTimeval::setTimeval ( const JTimeval &  timeval )

inlineinherited

Set time value.

Parameters

timeval

time value

Definition at line 93 of file JTimeval.hh.

    {
      static_cast<JTimeval&>(*this) = timeval;
    }

less() [2/2]

bool JLANG::JTimeval::less ( const JTimeval &  value ) const

inlineinherited

Less than method.

Parameters

value

time value

Returns

true if this time value less than given time value; else false

Definition at line 105 of file JTimeval.hh.

    {
      if (this->tv_sec == value.tv_sec)
        return this->tv_usec < value.tv_usec;
      else
        return this->tv_sec  < value.tv_sec;
    }

min()

static JTimeval JLANG::JTimeval::min ( )

inlinestaticinherited

Get minimal time value.

Returns

time value

Definition at line 119 of file JTimeval.hh.

    {
      return JTimeval(0, 0);
    }

max()

static JTimeval JLANG::JTimeval::max ( )

inlinestaticinherited

Get maximal time value.

Returns

time value

Definition at line 131 of file JTimeval.hh.

    {
      return JTimeval(std::numeric_limits<int>::max(), std::numeric_limits<int>::max());
    }

get() [1/2]

const timeval* JLANG::JTimeval::get ( ) const

inlineinherited

Get pointer to time value.

Returns

pointer to time value

Definition at line 143 of file JTimeval.hh.

    {
      return static_cast<const timeval*>(this);
    }

get() [2/2]

timeval* JLANG::JTimeval::get ( )

inlineinherited

Get pointer to time value.

Returns

pointer to time value

Definition at line 154 of file JTimeval.hh.

    {
      return static_cast<timeval*>(this);
    }

operator&() [1/2]

const timeval* JLANG::JTimeval::operator& ( ) const

inlineinherited

Address of operator.

Returns

pointer to time value

Definition at line 165 of file JTimeval.hh.

    {
      return get();
    }

operator&() [2/2]

timeval* JLANG::JTimeval::operator& ( )

inlineinherited

Address of operator.

Returns

pointer to time value

Definition at line 176 of file JTimeval.hh.

    {
      return get();
    }

Member Data Documentation

prefix

template<class T >

JPrefix JNET::JControlHostObjectIterator< T >::prefix

private

Definition at line 102 of file JControlHostObjectIterator.hh.

buffer

template<class T >

std::vector<char> JNET::JControlHostObjectIterator< T >::buffer

private

Definition at line 103 of file JControlHostObjectIterator.hh.

result

int JLANG::JFile::result

privateinherited

Definition at line 170 of file JFile.hh.

FILE_CLOSED

const int JLANG::JAbstractFile::FILE_CLOSED = -1

staticinherited

Definition at line 27 of file JAbstractFile.hh.

fileDescriptor

int JLANG::JAbstractFile::fileDescriptor

protectedinherited

Definition at line 102 of file JAbstractFile.hh.

do_throw

bool JLANG::JThrow< JControlHost >::do_throw

staticprotectedinherited

throw option

Set default throw option to true.

Definition at line 28 of file JThrow.hh.

object

template<class T >

T JLANG::JAbstractObjectIterator< T >::object

protectedinherited

object

Definition at line 34 of file JAbstractObjectIterator.hh.

has_next

template<class T >

bool JLANG::JAbstractObjectIterator< T >::has_next

protectedinherited

status

Definition at line 35 of file JAbstractObjectIterator.hh.

ps

template<class T >

pointer_type JLANG::JAbstractObjectIterator< T >::ps

privateinherited

Definition at line 84 of file JAbstractObjectIterator.hh.

---

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

• JControlHostObjectIterator.hh