ModPoll.cc File Reference

#include "squid.h"
#include "anyp/PortCfg.h"
#include "comm/Connection.h"
#include "comm/Loops.h"
#include "fd.h"
#include "fde.h"
#include "globals.h"
#include "ICP.h"
#include "mgr/Registration.h"
#include "SquidConfig.h"
#include "StatCounters.h"
#include "Store.h"
#include <cerrno>

Include dependency graph for ModPoll.cc:

Go to the source code of this file.

Macros
#define	POLLRDNORM   POLLIN
#define	POLLWRNORM   POLLOUT
#define	howmany(x, y)   (((x)+((y)-1))/(y))
#define	NBBY   8
#define	FD_MASK_BYTES   sizeof(fd_mask)
#define	FD_MASK_BITS   (FD_MASK_BYTES*NBBY)
#define	MAX_INCOMING_INTEGER   256
#define	INCOMING_FACTOR   5
#define	MAX_INCOMING_INTERVAL   (MAX_INCOMING_INTEGER << INCOMING_FACTOR)
#define	commCheckUdpIncoming   (++udp_io_events > (incoming_udp_interval>> INCOMING_FACTOR))
#define	commCheckDnsIncoming   (++dns_io_events > (incoming_dns_interval>> INCOMING_FACTOR))
#define	commCheckTcpIncoming   (++tcp_io_events > (incoming_tcp_interval>> INCOMING_FACTOR))

Functions
static int	fdIsTcpListen (int fd)
static int	fdIsUdpListen (int fd)
static int	fdIsDns (int fd)
static int	comm_check_incoming_poll_handlers (int nfds, int *fds)
static void	comm_poll_dns_incoming (void)
static void	comm_poll_udp_incoming (void)
static void	comm_poll_tcp_incoming (void)
static void	commPollRegisterWithCacheManager (void)
static void	commIncomingStats (StoreEntry *sentry)

Variables
static int	MAX_POLL_TIME = 1000
static OBJH	commIncomingStats
static int	udp_io_events = 0
	I/O events passed since last UDP receiver socket poll. More...
static int	dns_io_events = 0
	I/O events passed since last DNS socket poll. More...
static int	tcp_io_events = 0
	I/O events passed since last TCP listening socket poll. More...
static int	incoming_udp_interval = 16 << INCOMING_FACTOR
static int	incoming_dns_interval = 16 << INCOMING_FACTOR
static int	incoming_tcp_interval = 16 << INCOMING_FACTOR

Macro Definition Documentation

commCheckDnsIncoming

#define commCheckDnsIncoming   (++dns_io_events > (incoming_dns_interval>> INCOMING_FACTOR))

Definition at line 118 of file ModPoll.cc.

commCheckTcpIncoming

#define commCheckTcpIncoming   (++tcp_io_events > (incoming_tcp_interval>> INCOMING_FACTOR))

Definition at line 119 of file ModPoll.cc.

commCheckUdpIncoming

#define commCheckUdpIncoming   (++udp_io_events > (incoming_udp_interval>> INCOMING_FACTOR))

Definition at line 117 of file ModPoll.cc.

FD_MASK_BITS

#define FD_MASK_BITS   (FD_MASK_BYTES*NBBY)

Definition at line 50 of file ModPoll.cc.

FD_MASK_BYTES

#define FD_MASK_BYTES   sizeof(fd_mask)

Definition at line 49 of file ModPoll.cc.

howmany

#define howmany	(		x,
			y
	)		(((x)+((y)-1))/(y))

Definition at line 44 of file ModPoll.cc.

INCOMING_FACTOR

#define INCOMING_FACTOR   5

Definition at line 109 of file ModPoll.cc.

MAX_INCOMING_INTEGER

#define MAX_INCOMING_INTEGER   256

Definition at line 108 of file ModPoll.cc.

MAX_INCOMING_INTERVAL

#define MAX_INCOMING_INTERVAL   (MAX_INCOMING_INTEGER << INCOMING_FACTOR)

Definition at line 110 of file ModPoll.cc.

NBBY

#define NBBY   8

Definition at line 47 of file ModPoll.cc.

POLLRDNORM

#define POLLRDNORM   POLLIN

Definition at line 34 of file ModPoll.cc.

POLLWRNORM

#define POLLWRNORM   POLLOUT

Definition at line 37 of file ModPoll.cc.

Function Documentation

comm_check_incoming_poll_handlers()

static int comm_check_incoming_poll_handlers ( int  nfds, int *  fds  )

static

Definition at line 181 of file ModPoll.cc.

References DBG_IMPORTANT, debugs, fd_table, getCurrentTime(), incoming_sockets_accepted, MAXTCPLISTENPORTS, pfds, POLLRDNORM, POLLWRNORM, StatCounters::selects, statCounter, and StatCounters::syscalls.

Referenced by comm_poll_dns_incoming(), comm_poll_tcp_incoming(), and comm_poll_udp_incoming().

comm_poll_dns_incoming()

static void comm_poll_dns_incoming ( void  )

static

Definition at line 546 of file ModPoll.cc.

References SquidConfig::average, comm_check_incoming_poll_handlers(), StatCounters::comm_dns_incoming, SquidConfig::comm_incoming, Config, StatHist::count(), SquidConfig::dns, dns_io_events, DnsSocketA, DnsSocketB, incoming_dns_interval, INCOMING_DNS_MAX, MAX_INCOMING_INTERVAL, SquidConfig::min_poll, and statCounter.

comm_poll_tcp_incoming()

static void comm_poll_tcp_incoming ( void  )

static

Definition at line 283 of file ModPoll.cc.

References SquidConfig::average, comm_check_incoming_poll_handlers(), SquidConfig::comm_incoming, StatCounters::comm_tcp_incoming, Config, StatHist::count(), HttpSockets, incoming_tcp_interval, INCOMING_TCP_MAX, MAX_INCOMING_INTERVAL, MAXTCPLISTENPORTS, SquidConfig::min_poll, NHttpSockets, statCounter, SquidConfig::tcp, and tcp_io_events.

comm_poll_udp_incoming()

static void comm_poll_udp_incoming ( void  )

static

Definition at line 246 of file ModPoll.cc.

References SquidConfig::average, comm_check_incoming_poll_handlers(), SquidConfig::comm_incoming, StatCounters::comm_udp_incoming, Config, StatHist::count(), Comm::Connection::fd, icpIncomingConn, icpOutgoingConn, incoming_udp_interval, INCOMING_UDP_MAX, Comm::IsConnOpen(), MAX_INCOMING_INTERVAL, SquidConfig::min_poll, statCounter, SquidConfig::udp, and udp_io_events.

commIncomingStats()

static void commIncomingStats ( StoreEntry *  sentry )

static

Definition at line 600 of file ModPoll.cc.

References StatCounters::comm_dns_incoming, StatCounters::comm_tcp_incoming, StatCounters::comm_udp_incoming, StatHist::dump(), incoming_dns_interval, INCOMING_FACTOR, incoming_tcp_interval, incoming_udp_interval, statCounter, statHistIntDumper, and storeAppendPrintf().

commPollRegisterWithCacheManager()

static void commPollRegisterWithCacheManager ( void  )

static

Definition at line 586 of file ModPoll.cc.

References commIncomingStats, and Mgr::RegisterAction().

fdIsDns()

static int fdIsDns ( int  fd )

static

Definition at line 158 of file ModPoll.cc.

References DnsSocketA, and DnsSocketB.

fdIsTcpListen()

static int fdIsTcpListen ( int  fd )

static

Definition at line 170 of file ModPoll.cc.

References HttpPortList.

fdIsUdpListen()

static int fdIsUdpListen ( int  fd )

static

Definition at line 146 of file ModPoll.cc.

References Comm::Connection::fd, icpIncomingConn, and icpOutgoingConn.

Variable Documentation

commIncomingStats

OBJH commIncomingStats

static

Definition at line 56 of file ModPoll.cc.

Referenced by commPollRegisterWithCacheManager().

dns_io_events

int dns_io_events = 0

static

Definition at line 112 of file ModPoll.cc.

Referenced by comm_poll_dns_incoming().

incoming_dns_interval

int incoming_dns_interval = 16 << INCOMING_FACTOR

static

Definition at line 115 of file ModPoll.cc.

Referenced by comm_poll_dns_incoming(), and commIncomingStats().

incoming_tcp_interval

int incoming_tcp_interval = 16 << INCOMING_FACTOR

static

Definition at line 116 of file ModPoll.cc.

Referenced by comm_poll_tcp_incoming(), and commIncomingStats().

incoming_udp_interval

int incoming_udp_interval = 16 << INCOMING_FACTOR

static

Definition at line 114 of file ModPoll.cc.

Referenced by comm_poll_udp_incoming(), and commIncomingStats().

MAX_POLL_TIME

int MAX_POLL_TIME = 1000

static

Definition at line 41 of file ModPoll.cc.

tcp_io_events

int tcp_io_events = 0

static

Definition at line 113 of file ModPoll.cc.

Referenced by comm_poll_tcp_incoming().

udp_io_events

int udp_io_events = 0

static

Definition at line 111 of file ModPoll.cc.

Referenced by comm_poll_udp_incoming().