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Public Member Functions | Protected Member Functions

PStatServer Class Reference

The overall manager of the network connections. More...

#include "pStatServer.h"

Inheritance diagram for PStatServer:
ConnectionManager GtkStatsServer TextStats WinStatsServer

List of all members.

Public Member Functions

void add_reader (Connection *connection, PStatReader *reader)
 Adds the newly-created PStatReader to the list of currently active readers.
int add_user_guide_bar (double height)
 Creates a new user guide bar and returns its index number.
int find_user_guide_bar (double from_height, double to_height) const
 Returns the index number of the first user guide bar found whose height is within the indicated range, or -1 if no user guide bars fall within the range.
int get_num_user_guide_bars () const
 Returns the current number of user-defined guide bars.
int get_udp_port ()
 Returns a new port number that will probably be free to use as a UDP port.
double get_user_guide_bar_height (int n) const
 Returns the height of the nth user-defined guide bar.
virtual bool is_thread_safe ()
 This should be redefined to return true in derived classes that want to deal with multithreaded readers and such.
bool listen (int port=-1)
 Establishes a port number that the manager will listen on for TCP connections.
void main_loop (bool *interrupt_flag=NULL)
 An alternative to repeatedly calling poll(), this function yields control of the program to the PStatServer.
virtual PStatMonitormake_monitor ()=0
void move_user_guide_bar (int n, double height)
 Adjusts the height of the nth user-defined guide bar.
void poll ()
 Checks for any network activity and handles it, if appropriate, and then returns.
void release_udp_port (int port)
 Indicates that the given UDP port is once again free for use.
void remove_reader (Connection *connection, PStatReader *reader)
 Removes the indicated reader.
void remove_user_guide_bar (int n)
 Removes the user guide bar with the indicated index number.

Protected Member Functions

virtual void connection_reset (const PT(Connection)&connection, bool okflag)
 Called when a lost connection is detected by the net code, this should pass the word on to the interested parties and clean up gracefully.

Detailed Description

The overall manager of the network connections.

This class gets the ball rolling; to use this package, you need to derive from this and define make_monitor() to allocate and return a PStatMonitor of the suitable type.

Then create just one PStatServer object and call listen() with the port(s) you would like to listen on. It will automatically create PStatMonitors as connections are established and mark the connections closed as they are lost.

Definition at line 41 of file pStatServer.h.


Member Function Documentation

void PStatServer::add_reader ( Connection connection,
PStatReader reader 
)

Adds the newly-created PStatReader to the list of currently active readers.

Definition at line 156 of file pStatServer.cxx.

Referenced by PStatListener::connection_opened().

int PStatServer::add_user_guide_bar ( double  height)

Creates a new user guide bar and returns its index number.

Definition at line 247 of file pStatServer.cxx.

void PStatServer::connection_reset ( const PT(Connection)&  connection,
bool  okflag 
) [protected, virtual]

Called when a lost connection is detected by the net code, this should pass the word on to the interested parties and clean up gracefully.

Reimplemented from ConnectionManager.

Definition at line 332 of file pStatServer.cxx.

References ConnectionManager::close_connection().

int PStatServer::find_user_guide_bar ( double  from_height,
double  to_height 
) const

Returns the index number of the first user guide bar found whose height is within the indicated range, or -1 if no user guide bars fall within the range.

Definition at line 277 of file pStatServer.cxx.

int PStatServer::get_num_user_guide_bars ( ) const

Returns the current number of user-defined guide bars.

Definition at line 213 of file pStatServer.cxx.

int PStatServer::get_udp_port ( )

Returns a new port number that will probably be free to use as a UDP port.

The caller should be prepared to accept the possibility that it will be already in use by another process, however.

Definition at line 186 of file pStatServer.cxx.

Referenced by PStatReader::set_tcp_connection().

double PStatServer::get_user_guide_bar_height ( int  n) const

Returns the height of the nth user-defined guide bar.

Definition at line 223 of file pStatServer.cxx.

bool PStatServer::is_thread_safe ( ) [virtual]

This should be redefined to return true in derived classes that want to deal with multithreaded readers and such.

If this returns true, the manager will create the listener in its own thread, and thus the PStatReader constructors at least will run in a different thread.

This is not related to the question of whether the reader can handle multiple different PStatThreadDatas; it's strictly a question of whether the readers themselves can run in a separate thread.

Definition at line 320 of file pStatServer.cxx.

bool PStatServer::listen ( int  port = -1)

Establishes a port number that the manager will listen on for TCP connections.

This may be called more than once to listen simulataneously on multiple connections, as if that were at all useful.

The default parameter, -1, indicates the use of whatever port number has been indicated in the Config file.

This function returns true if the port was successfully opened, or false if it could not open the port.

Definition at line 59 of file pStatServer.cxx.

References ConnectionReader::add_connection().

void PStatServer::main_loop ( bool *  interrupt_flag = NULL)

An alternative to repeatedly calling poll(), this function yields control of the program to the PStatServer.

It does not return until the program is done.

If interrupt_flag is non-NULL, it is the address of a bool variable that is initially false, and may be asynchronously set true to indicate the loop should terminate.

Definition at line 142 of file pStatServer.cxx.

References poll(), and Thread::sleep().

void PStatServer::move_user_guide_bar ( int  n,
double  height 
)

Adjusts the height of the nth user-defined guide bar.

Definition at line 234 of file pStatServer.cxx.

void PStatServer::poll ( )

Checks for any network activity and handles it, if appropriate, and then returns.

This must be called periodically unless is_thread_safe() is redefined to return true on this class and also on all PStatMonitors in use.

Alternatively, a program may call main_loop() and yield control of the program entirely to the PStatServer.

Definition at line 96 of file pStatServer.cxx.

References PStatReader::idle(), PStatReader::lost_connection(), and ConnectionReader::poll().

Referenced by main_loop().

void PStatServer::release_udp_port ( int  port)

Indicates that the given UDP port is once again free for use.

Definition at line 202 of file pStatServer.cxx.

void PStatServer::remove_reader ( Connection connection,
PStatReader reader 
)

Removes the indicated reader.

Definition at line 166 of file pStatServer.cxx.

Referenced by PStatReader::close().

void PStatServer::remove_user_guide_bar ( int  n)

Removes the user guide bar with the indicated index number.

All subsequent index numbers are adjusted down one.

Definition at line 263 of file pStatServer.cxx.


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