Comm::AcceptLimiter Class Reference

#include <AcceptLimiter.h>

Collaboration diagram for Comm::AcceptLimiter:

Public Member Functions
void	defer (const TcpAcceptor::Pointer &afd)
void	removeDead (const TcpAcceptor::Pointer &afd)
void	kick ()

Static Public Member Functions
static AcceptLimiter &	Instance ()

Private Attributes
std::deque< TcpAcceptor::Pointer >	deferred_

Detailed Description

FIFO Queue holding listener socket handlers which have been activated ready to dupe their FD and accept() a new client connection. But when doing so there were not enough FD available to handle the new connection. These handlers are awaiting some FD to become free.

defer - used only by Comm layer ConnAcceptor adding themselves when FD are limited. removeDead - used only by Comm layer ConnAcceptor to remove themselves when dying. kick - used by Comm layer when FD are closed.

Definition at line 29 of file AcceptLimiter.h.

Member Function Documentation

defer()

void Comm::AcceptLimiter::defer

(

const TcpAcceptor::Pointer &

afd

)

delay accepting a new client connection.

Definition at line 24 of file AcceptLimiter.cc.

References debugs.

Referenced by Comm::TcpAcceptor::doAccept().

Instance()

Comm::AcceptLimiter & Comm::AcceptLimiter::Instance ( )

static

retrieve the global instance of the queue.

Definition at line 17 of file AcceptLimiter.cc.

Referenced by comm_close_complete(), Comm::TcpAcceptor::doAccept(), and Comm::TcpAcceptor::swanSong().

kick()

void Comm::AcceptLimiter::kick

(

)

try to accept and begin processing any delayed client connections.

Definition at line 44 of file AcceptLimiter.cc.

References debugs, and Comm::TcpAcceptor::okToAccept().

Referenced by comm_close_complete().

removeDead()

void Comm::AcceptLimiter::removeDead

(

const TcpAcceptor::Pointer &

afd

)

remove all records of an acceptor. Only to be called by the ConnAcceptor::swanSong()

Definition at line 31 of file AcceptLimiter.cc.

References debugs.

Referenced by Comm::TcpAcceptor::swanSong().

Member Data Documentation

deferred_

std::deque<TcpAcceptor::Pointer> Comm::AcceptLimiter::deferred_

private

FIFO queue

Definition at line 47 of file AcceptLimiter.h.

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

• src/comm/AcceptLimiter.h
• src/comm/AcceptLimiter.cc