isc::dhcp::ClientHandler Class Reference

Client race avoidance RAII handler. More...

#include <client_handler.h>

Inheritance diagram for isc::dhcp::ClientHandler:

Public Member Functions
	ClientHandler ()
	Public interface. More...
	ClientHandler ()
	Public interface. More...
virtual	~ClientHandler ()
	Destructor. More...
virtual	~ClientHandler ()
	Destructor. More...
bool	tryLock (Pkt6Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client. More...
bool	tryLock (Pkt4Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client. More...

Detailed Description

Client race avoidance RAII handler.

Definition at line 38 of file dhcp4/client_handler.h.

Constructor & Destructor Documentation

isc::dhcp::ClientHandler::ClientHandler

(

)

Public interface.

Constructor.

Definition at line 134 of file dhcp4/client_handler.cc.

isc::dhcp::ClientHandler::~ClientHandler ( )

virtual

Destructor.

Releases the client if it was acquired.

Definition at line 138 of file dhcp4/client_handler.cc.

References isc::util::ThreadPool< WorkItem, Container >::addFront(), isc::dhcp::DBG_DHCP4_BASIC, isc::dhcp::dhcp4_logger, isc::dhcp::DHCP4_PACKET_QUEUE_FULL, isc::util::MultiThreadingMgr::getMode(), isc::util::MultiThreadingMgr::getThreadPool(), and LOG_DEBUG.

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isc::dhcp::ClientHandler::ClientHandler

(

)

Public interface.

Constructor.

virtual isc::dhcp::ClientHandler::~ClientHandler ( )

virtual

Destructor.

Releases the client if it was acquired.

Member Function Documentation

bool isc::dhcp::ClientHandler::tryLock	(	Pkt6Ptr	query,
		ContinuationPtr	cont = ContinuationPtr()
	)

Tries to acquires a client.

Lookup the client:

• if not found insert the client in the clients map and return true
• if found, if has a continuation put it in the holder, and return false

Parameters

query	The query from the client.
cont	The continuation in the case the client was held.

Returns

true if the client was acquired, false if there is already a query from the same client.

Definition at line 85 of file dhcp6/client_handler.cc.

References isc::stats::StatsMgr::addValue(), isc::dhcp::bad_packet6_logger, isc::dhcp::DHCP6_PACKET_DROP_DUPLICATE, isc::stats::StatsMgr::instance(), isc_throw, and LOG_WARN.

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bool isc::dhcp::ClientHandler::tryLock	(	Pkt4Ptr	query,
		ContinuationPtr	cont = ContinuationPtr()
	)

Tries to acquires a client.

Lookup the client:

• if not found insert the client in the clients map and return true
• if found, if has a continuation put it in the holder, and return false

Parameters

query	The query from the client.
cont	The continuation in the case the client was held.

Returns

true if the client was acquired, false if there is already a query from the same client.

Definition at line 163 of file dhcp4/client_handler.cc.

References isc::stats::StatsMgr::addValue(), isc::dhcp::bad_packet4_logger, isc::dhcp::DHCP4_PACKET_DROP_0011, isc::dhcp::DHCP4_PACKET_DROP_0012, isc::dhcp::DHO_DHCP_CLIENT_IDENTIFIER, isc::stats::StatsMgr::instance(), isc_throw, and LOG_WARN.

Referenced by isc::dhcp::Dhcpv4Srv::processDhcp4Query(), and isc::dhcp::Dhcpv6Srv::processDhcp6Query().

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

• dhcp4/client_handler.h
• dhcp4/client_handler.cc