Client race avoidance RAII handler. More...

#include <client_handler.h>

Inheritance diagram for isc::dhcp::ClientHandler:

Public Member Functions
	ClientHandler ()
	Public interface.

	ClientHandler ()
	Public interface.

virtual	~ClientHandler ()
	Destructor.

virtual	~ClientHandler ()
	Destructor.

bool	tryLock (Pkt4Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client.

bool	tryLock (Pkt6Ptr query, ContinuationPtr cont=ContinuationPtr())
	Tries to acquires a client.

Detailed Description

Client race avoidance RAII handler.

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

Constructor & Destructor Documentation

◆ ClientHandler() [1/2]

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

Public interface.

Constructor.

Definition at line 135 of file dhcp4/client_handler.cc.

◆ ~ClientHandler() [1/2]

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

virtual

Destructor.

Releases the client if it was acquired.

Definition at line 139 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(), isc::util::MultiThreadingMgr::instance(), and LOG_DEBUG.

Here is the call graph for this function:

◆ ClientHandler() [2/2]

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

Public interface.

Constructor.

◆ ~ClientHandler() [2/2]

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

virtual

Destructor.

Releases the client if it was acquired.

Member Function Documentation

◆ tryLock() [1/2]

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 164 of file dhcp4/client_handler.cc.

References isc::stats::StatsMgr::addValue(), isc::dhcp::bad_packet4_logger, isc::log::DBGLVL_PKT_HANDLING, 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_DEBUG.

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