pegasus/src/Pegasus/Common/Monitor.cpp - diff

Return to Monitor.cpp CVS log

Up to [Pegasus] / pegasus / src / Pegasus / Common

Diff for /pegasus/src/Pegasus/Common/Monitor.cpp between version 1.1.2.7 and 1.107

version 1.1.2.7, 2001/08/01 21:07:38

version 1.107, 2006/06/26 22:56:40

Line 1

//%/////////////////////////////////////////////////////////////////////////////

//%2006////////////////////////////////////////////////////////////////////////

// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.

// IBM Corp.; EMC Corporation, The Open Group.

// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.

// EMC Corporation; VERITAS Software Corporation; The Open Group.

// EMC Corporation; Symantec Corporation; The Open Group.

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to

Line 22

Line 31

// Author: Mike Brasher (mbrasher@bmc.com)

// Modified By:

// Modified By: Mike Day (monitor_2) mdday@us.ibm.com

// Amit K Arora (Bug#1153) amita@in.ibm.com

// Alagaraja Ramasubramanian (alags_raj@in.ibm.com) for Bug#1090

// Sushma Fernandes (sushma@hp.com) for Bug#2057

// Josephine Eskaline Joyce (jojustin@in.ibm.com) for PEP#101

// Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)

//%/////////////////////////////////////////////////////////////////////////////

#include "Config.h"

#include "Network.h"

#include <Pegasus/Common/Config.h>

#ifdef PEGASUS_OS_TYPE_WINDOWS

# define FD_SETSIZE 1024

# include <winsock.h>

#else

# include <sys/types.h>

# include <sys/socket.h>

# include <sys/time.h>

# include <netinet/in.h>

# include <netdb.h>

# include <arpa/inet.h>

# include <unistd.h>

#endif

#include <cstring>

#include "Monitor.h"

#include "MessageQueue.h"

#include "Socket.h"

#include <Pegasus/Common/Tracer.h>

#include <Pegasus/Common/HTTPConnection.h>

#include <Pegasus/Common/MessageQueueService.h>

#include <Pegasus/Common/Exception.h>

#include "ArrayIterator.h"

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static AtomicInt _connections(0);

////////////////////////////////////////////////////////////////////////////////

// Routines for starting and stoping socket interface.

// _getError()

////////////////////////////////////////////////////////////////////////////////

extern Uint32 _socketInterfaceRefCount;

static inline int _getError()

static void _OpenSocketInterface()

{

#ifdef PEGASUS_OS_TYPE_WINDOWS

if (_socketInterfaceRefCount == 0)

{

WSADATA tmp;

if (WSAStartup(0x202, &tmp) == SOCKET_ERROR)

WSACleanup();

}

_socketInterfaceRefCount++;

#endif

}

static void _CloseSocketInterface()

{

#ifdef PEGASUS_OS_TYPE_WINDOWS

_socketInterfaceRefCount--;

return WSAGetLastError()

#else

if (_socketInterfaceRefCount == 0)

return errno;

WSACleanup();

#endif

}

////////////////////////////////////////////////////////////////////////////////

// MonitorRep

////////////////////////////////////////////////////////////////////////////////

struct MonitorRep

{

fd_set rd_fd_set;

fd_set wr_fd_set;

fd_set ex_fd_set;

fd_set active_rd_fd_set;

fd_set active_wr_fd_set;

fd_set active_ex_fd_set;

};

////////////////////////////////////////////////////////////////////////////////

// Monitor

////////////////////////////////////////////////////////////////////////////////

#define MAX_NUMBER_OF_MONITOR_ENTRIES 32

Monitor::Monitor()

: _stopConnections(0),

_stopConnectionsSem(0),

_solicitSocketCount(0),

_tickle_client_socket(-1),

_tickle_server_socket(-1),

_tickle_peer_socket(-1)

{

int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES;

Socket::initializeInterface();

_entries.reserveCapacity(numberOfMonitorEntriesToAllocate);

// setup the tickler

initializeTickler();

// Start the count at 1 because initilizeTickler()

// has added an entry in the first position of the

// _entries array

for( int i = 1; i < numberOfMonitorEntriesToAllocate; i++ )

{

_OpenSocketInterface();

_MonitorEntry entry(0, 0, 0);

_entries.append(entry);

_rep = new MonitorRep;

}

FD_ZERO(&_rep->rd_fd_set);

FD_ZERO(&_rep->wr_fd_set);

FD_ZERO(&_rep->ex_fd_set);

FD_ZERO(&_rep->active_rd_fd_set);

FD_ZERO(&_rep->active_wr_fd_set);

FD_ZERO(&_rep->active_ex_fd_set);

}

Monitor::~Monitor()

{

_CloseSocketInterface();

Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface");

}

Boolean Monitor::run(Uint32 milliseconds)

try{

if(_tickle_peer_socket >= 0)

{

#ifdef PEGASUS_OS_TYPE_WINDOWS

Socket::close(_tickle_peer_socket);

}

if(_tickle_client_socket >= 0)

{

Socket::close(_tickle_client_socket);

}

if(_tickle_server_socket >= 0)

{

Socket::close(_tickle_server_socket);

}

catch(...)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Failed to close tickle sockets");

}

// Windows select() has a strange little bug. It returns immediately if

Socket::uninitializeInterface();

// there are no descriptors in the set even if the timeout is non-zero.

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

// To work around this, we call Sleep() for now:

"returning from monitor destructor");

}

if (_entries.size() == 0)

void Monitor::initializeTickler(){

Sleep(milliseconds);

NOTE: On any errors trying to

setup out tickle connection,

throw an exception/end the server

#endif

/* setup the tickle server/listener */

// Check for events on the selected file descriptors. Only do this if

// get a socket for the server side

// there were no undispatched events from last time.

if((_tickle_server_socket = ::socket(PF_INET, SOCK_STREAM, 0)) == PEGASUS_INVALID_SOCKET){

//handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CREATE",

"Received error number $0 while creating the internal socket.",

_getError());

throw Exception(parms);

}

static int count = 0;

// set TCP_NODELAY

int opt = 1;

setsockopt(_tickle_server_socket, IPPROTO_TCP, TCP_NODELAY, (char*)&opt, sizeof(opt));

if (count == 0)

// initialize the address

{

memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr));

memcpy(&_rep->active_rd_fd_set, &_rep->rd_fd_set, sizeof(fd_set));

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

memcpy(&_rep->active_wr_fd_set, &_rep->wr_fd_set, sizeof(fd_set));

#pragma convert(37)

memcpy(&_rep->active_ex_fd_set, &_rep->ex_fd_set, sizeof(fd_set));

#endif

_tickle_server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");

const Uint32 SEC = milliseconds / 1000;

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

const Uint32 USEC = (milliseconds % 1000) * 1000;

#pragma convert(0)

struct timeval tv = { SEC, USEC };

#endif

_tickle_server_addr.sin_family = PF_INET;

count = select(

_tickle_server_addr.sin_port = 0;

FD_SETSIZE,

&_rep->active_rd_fd_set,

&_rep->active_wr_fd_set,

&_rep->active_ex_fd_set,

&tv);

if (count == 0)

socklen_t _addr_size = sizeof(_tickle_server_addr);

return false;

#ifdef PEGASUS_OS_TYPE_WINDOWS

// bind server side to socket

else if (count == SOCKET_ERROR)

if((::bind(_tickle_server_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),

sizeof(_tickle_server_addr))) < 0){

// handle error

#ifdef PEGASUS_OS_ZOS

MessageLoaderParms parms("Common.Monitor.TICKLE_BIND_LONG",

"Received error:$0 while binding the internal socket.",strerror(errno));

#else

else if (count == -1)

MessageLoaderParms parms("Common.Monitor.TICKLE_BIND",

"Received error number $0 while binding the internal socket.",

_getError());

#endif

{

throw Exception(parms);

count = 0;

}

return false;

// tell the kernel we are a server

if((::listen(_tickle_server_socket,3)) < 0){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_LISTEN",

"Received error number $0 while listening to the internal socket.",

_getError());

throw Exception(parms);

}

// make sure we have the correct socket for our server

int sock = ::getsockname(_tickle_server_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),

&_addr_size);

if(sock < 0){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_SOCKNAME",

"Received error number $0 while getting the internal socket name.",

_getError());

throw Exception(parms);

}

/* set up the tickle client/connector */

// get a socket for our tickle client

if((_tickle_client_socket = ::socket(PF_INET, SOCK_STREAM, 0)) == PEGASUS_INVALID_SOCKET){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CREATE",

"Received error number $0 while creating the internal client socket.",

_getError());

throw Exception(parms);

}

// set TCP_NODELAY

setsockopt(_tickle_client_socket, IPPROTO_TCP, TCP_NODELAY, (char*)&opt, sizeof(opt));

// setup the address of the client

memset(&_tickle_client_addr, 0, sizeof(_tickle_client_addr));

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#pragma convert(37)

#endif

_tickle_client_addr.sin_addr.s_addr = inet_addr("127.0.0.1");

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#pragma convert(0)

#endif

_tickle_client_addr.sin_family = PF_INET;

_tickle_client_addr.sin_port = 0;

// bind socket to client side

if((::bind(_tickle_client_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_client_addr),

sizeof(_tickle_client_addr))) < 0){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_BIND",

"Received error number $0 while binding the internal client socket.",

_getError());

throw Exception(parms);

}

// connect to server side

if((::connect(_tickle_client_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),

sizeof(_tickle_server_addr))) < 0){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CONNECT",

"Received error number $0 while connecting the internal client socket.",

_getError());

throw Exception(parms);

}

/* set up the slave connection */

memset(&_tickle_peer_addr, 0, sizeof(_tickle_peer_addr));

socklen_t peer_size = sizeof(_tickle_peer_addr);

pegasus_sleep(1);

// this call may fail, we will try a max of 20 times to establish this peer connection

if((_tickle_peer_socket = ::accept(_tickle_server_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr),

&peer_size)) < 0){

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

// Only retry on non-windows platforms.

if(_tickle_peer_socket == -1 && errno == EAGAIN)

{

int retries = 0;

{

pegasus_sleep(1);

_tickle_peer_socket = ::accept(_tickle_server_socket,

reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr),

&peer_size);

retries++;

} while(_tickle_peer_socket == -1 && errno == EAGAIN && retries < 20);

}

#endif

}

if(_tickle_peer_socket == -1){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_ACCEPT",

"Received error number $0 while accepting the internal socket connection.",

_getError());

throw Exception(parms);

}

// add the tickler to the list of entries to be monitored and set to IDLE because Monitor only

// checks entries with IDLE state for events

_MonitorEntry entry(_tickle_peer_socket, 1, INTERNAL);

entry._status = _MonitorEntry::IDLE;

_entries.append(entry);

}

for (Uint32 i = 0, n = _entries.size(); i < n; i++)

void Monitor::tickle(void)

{

Sint32 socket = _entries[i].socket;

static char _buffer[] =

Uint32 events = 0;

{

'0','0'

if (FD_ISSET(socket, &_rep->active_rd_fd_set))

};

events |= SocketMessage::READ;

if (FD_ISSET(socket, &_rep->active_wr_fd_set))

AutoMutex autoMutex(_tickle_mutex);

events |= SocketMessage::WRITE;

Socket::disableBlocking(_tickle_client_socket);

Socket::write(_tickle_client_socket,&_buffer, 2);

Socket::enableBlocking(_tickle_client_socket);

}

if (FD_ISSET(socket, &_rep->active_ex_fd_set))

void Monitor::setState( Uint32 index, _MonitorEntry::entry_status status )

events |= SocketMessage::EXCEPTION;

{

// Set the state to requested state

_entries[index]._status = status;

}

if (events)

Boolean Monitor::run(Uint32 milliseconds)

{

MessageQueue* queue = MessageQueue::lookup(_entries[i].queueId);

if (!queue)

Boolean handled_events = false;

unsolicitSocketMessages(_entries[i].queueId);

int i = 0;

struct timeval tv = {milliseconds/1000, milliseconds%1000*1000};

fd_set fdread;

FD_ZERO(&fdread);

Message* message = new SocketMessage(socket, events);

AutoMutex autoEntryMutex(_entry_mut);

queue->enqueue(message);

if (events & SocketMessage::WRITE)

ArrayIterator<_MonitorEntry> entries(_entries);

// Check the stopConnections flag. If set, clear the Acceptor monitor entries

if (_stopConnections.get() == 1)

{

for ( int indx = 0; indx < (int)entries.size(); indx++)

{

FD_CLR(socket, &_rep->active_wr_fd_set);

if (entries[indx]._type == Monitor::ACCEPTOR)

{

if ( entries[indx]._status.get() != _MonitorEntry::EMPTY)

{

if ( entries[indx]._status.get() == _MonitorEntry::IDLE ||

entries[indx]._status.get() == _MonitorEntry::DYING )

{

// remove the entry

entries[indx]._status = _MonitorEntry::EMPTY;

}

else

if (events & SocketMessage::EXCEPTION)

{

FD_CLR(socket, &_rep->active_ex_fd_set);

// set status to DYING

entries[indx]._status = _MonitorEntry::DYING;

}

_stopConnections = 0;

_stopConnectionsSem.signal();

}

if (events & SocketMessage::READ)

for( int indx = 0; indx < (int)entries.size(); indx++)

{

const _MonitorEntry &entry = entries[indx];

if ((entry._status.get() == _MonitorEntry::DYING) &&

(entry._type == Monitor::CONNECTION))

{

FD_CLR(socket, &_rep->active_rd_fd_set);

MessageQueue *q = MessageQueue::lookup(entry.queueId);

PEGASUS_ASSERT(q != 0);

HTTPConnection &h = *static_cast<HTTPConnection *>(q);

if (h._connectionClosePending == false)

continue;

// NOTE: do not attempt to delete while there are pending responses

// coming thru. The last response to come thru after a

// _connectionClosePending will reset _responsePending to false

// and then cause the monitor to rerun this code and clean up.

// (see HTTPConnection.cpp)

if (h._responsePending == true)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "Monitor::run - "

"Ignoring connection delete request because "

"responses are still pending. "

"connection=0x%p, socket=%d\n",

(void *)&h, h.getSocket());

continue;

}

h._connectionClosePending = false;

MessageQueue &o = h.get_owner();

Message* message= new CloseConnectionMessage(entry.socket);

message->dest = o.getQueueId();

count--;

// HTTPAcceptor is responsible for closing the connection.

return true;

// The lock is released to allow HTTPAcceptor to call

// unsolicitSocketMessages to free the entry.

// Once HTTPAcceptor completes processing of the close

// connection, the lock is re-requested and processing of

// the for loop continues. This is safe with the current

// implementation of the entries object. Note that the

// loop condition accesses the entries.size() on each

// iteration, so that a change in size while the mutex is

// unlocked will not result in an ArrayIndexOutOfBounds

// exception.

autoEntryMutex.unlock();

o.enqueue(message);

autoEntryMutex.lock();

// After enqueue a message and the autoEntryMutex has been released and locked again,

// the array of _entries can be changed. The ArrayIterator has be reset with the original _entries.

entries.reset(_entries);

}

return false;

Uint32 _idleEntries = 0;

}

Boolean Monitor::solicitSocketMessages(

Sint32 socket,

We will keep track of the maximum socket number and pass this value

Uint32 events,

to the kernel as a parameter to SELECT. This loop seems like a good

Uint32 queueId)

place to calculate the max file descriptor (maximum socket number)

because we have to traverse the entire array.

SocketHandle maxSocketCurrentPass = 0;

for( int indx = 0; indx < (int)entries.size(); indx++)

{

// See whether a handler is already registered for this one:

if(maxSocketCurrentPass < entries[indx].socket)

maxSocketCurrentPass = entries[indx].socket;

Uint32 pos = _findEntry(socket);

if(entries[indx]._status.get() == _MonitorEntry::IDLE)

{

_idleEntries++;

FD_SET(entries[indx].socket, &fdread);

}

Add 1 then assign maxSocket accordingly. We add 1 to account for

descriptors starting at 0.

maxSocketCurrentPass++;

autoEntryMutex.unlock();

if (pos != PEGASUS_NOT_FOUND)

return false;

// The first argument to select() is ignored on Windows and it is not

// a socket value. The original code assumed that the number of sockets

// and a socket value have the same type. On Windows they do not.

#ifdef PEGASUS_OS_TYPE_WINDOWS

int events = select(0, &fdread, NULL, NULL, &tv);

#else

int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv);

#endif

autoEntryMutex.lock();

// After enqueue a message and the autoEntryMutex has been released and locked again,

// the array of _entries can be changed. The ArrayIterator has be reset with the original _entries

entries.reset(_entries);

if (events == PEGASUS_SOCKET_ERROR)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::run - errorno = %d has occurred on select.", errno);

// The EBADF error indicates that one or more or the file

// descriptions was not valid. This could indicate that

// the entries structure has been corrupted or that

// we have a synchronization error.

PEGASUS_ASSERT(errno != EBADF);

}

else if (events)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::run select event received events = %d, monitoring %d idle entries",

events, _idleEntries);

for( int indx = 0; indx < (int)entries.size(); indx++)

{

// The Monitor should only look at entries in the table that are IDLE (i.e.,

// owned by the Monitor).

if((entries[indx]._status.get() == _MonitorEntry::IDLE) &&

(FD_ISSET(entries[indx].socket, &fdread)))

{

MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::run indx = %d, queueId = %d, q = %p",

indx, entries[indx].queueId, q);

PEGASUS_ASSERT(q !=0);

try

{

if(entries[indx]._type == Monitor::CONNECTION)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"entries[indx].type for indx = %d is Monitor::CONNECTION", indx);

static_cast<HTTPConnection *>(q)->_entry_index = indx;

// Do not update the entry just yet. The entry gets updated once

// the request has been read.

//entries[indx]._status = _MonitorEntry::BUSY;

// If allocate_and_awaken failure, retry on next iteration

/* Removed for PEP 183.

if (!MessageQueueService::get_thread_pool()->allocate_and_awaken(

(void *)q, _dispatch))

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"Monitor::run: Insufficient resources to process request.");

entries[indx]._status = _MonitorEntry::IDLE;

return true;

}

// Added for PEP 183

HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p",

dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);

try

{

dst->run(1);

}

catch (...)

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::_dispatch: exception received");

}

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::_dispatch: exited run() for index %d", dst->_entry_index);

// It is possible the entry status may not be set to busy.

// The following will fail in that case.

// PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.get() == _MonitorEntry::BUSY);

// Once the HTTPConnection thread has set the status value to either

// Monitor::DYING or Monitor::IDLE, it has returned control of the connection

// to the Monitor. It is no longer permissible to access the connection

// or the entry in the _entries table.

// The following is not relevant as the worker thread or the

// reader thread will update the status of the entry.

//if (dst->_connectionClosePending)

//{

// dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;

//}

//else

//{

// dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;

//}

// end Added for PEP 183

}

else if( entries[indx]._type == Monitor::INTERNAL){

// set ourself to BUSY,

// read the data

// and set ourself back to IDLE

entries[indx]._status = _MonitorEntry::BUSY;

static char buffer[2];

Socket::disableBlocking(entries[indx].socket);

Sint32 amt = Socket::read(entries[indx].socket,&buffer, 2);

Socket::enableBlocking(entries[indx].socket);

entries[indx]._status = _MonitorEntry::IDLE;

}

else

{

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Non-connection entry, indx = %d, has been received.", indx);

int events = 0;

events |= SocketMessage::READ;

Message *msg = new SocketMessage(entries[indx].socket, events);

entries[indx]._status = _MonitorEntry::BUSY;

autoEntryMutex.unlock();

q->enqueue(msg);

autoEntryMutex.lock();

// After enqueue a message and the autoEntryMutex has been released and locked again,

// the array of entries can be changed. The ArrayIterator has be reset with the original _entries

entries.reset(_entries);

entries[indx]._status = _MonitorEntry::IDLE;

return true;

}

catch(...)

{

}

handled_events = true;

}

// Set the events:

return(handled_events);

}

if (events & SocketMessage::READ)

void Monitor::stopListeningForConnections(Boolean wait)

FD_SET(socket, &_rep->rd_fd_set);

{

PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()");

// set boolean then tickle the server to recognize _stopConnections

_stopConnections = 1;

tickle();

if (events & SocketMessage::WRITE)

if (wait)

FD_SET(socket, &_rep->wr_fd_set);

{

// Wait for the monitor to notice _stopConnections. Otherwise the

// caller of this function may unbind the ports while the monitor

// is still accepting connections on them.

_stopConnectionsSem.wait();

}

if (events & SocketMessage::EXCEPTION)

PEG_METHOD_EXIT();

FD_SET(socket, &_rep->ex_fd_set);

}

// Add the entry to the list:

_MonitorEntry entry = { socket, queueId };

int Monitor::solicitSocketMessages(

SocketHandle socket,

Uint32 events,

Uint32 queueId,

int type)

{

PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages");

AutoMutex autoMut(_entry_mut);

// Check to see if we need to dynamically grow the _entries array

// We always want the _entries array to 2 bigger than the

// current connections requested

_solicitSocketCount++; // bump the count

int size = (int)_entries.size();

if((int)_solicitSocketCount >= (size-1)){

for(int i = 0; i < ((int)_solicitSocketCount - (size-1)); i++){

_MonitorEntry entry(0, 0, 0);

_entries.append(entry);

}

int index;

for(index = 1; index < (int)_entries.size(); index++)

{

try

{

if(_entries[index]._status.get() == _MonitorEntry::EMPTY)

{

_entries[index].socket = socket;

_entries[index].queueId = queueId;

_entries[index]._type = type;

_entries[index]._status = _MonitorEntry::IDLE;

// Success!

return index;

}

catch(...)

{

}

_solicitSocketCount--; // decrease the count, if we are here we didnt do anything meaningful

PEG_METHOD_EXIT();

return -1;

return true;

}

Boolean Monitor::unsolicitSocketMessages(Sint32 socket)

void Monitor::unsolicitSocketMessages(SocketHandle socket)

{

// Look for the given entry and remove it:

for (Uint32 i = 0, n = _entries.size(); i < n; i++)

PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages");

AutoMutex autoMut(_entry_mut);

Start at index = 1 because _entries[0] is the tickle entry which never needs

to be EMPTY;

unsigned int index;

for(index = 1; index < _entries.size(); index++)

{

if (_entries[i].socket == socket)

if(_entries[index].socket == socket)

{

Sint32 socket = _entries[i].socket;

_entries[index]._status = _MonitorEntry::EMPTY;

FD_CLR(socket, &_rep->rd_fd_set);

_entries[index].socket = PEGASUS_INVALID_SOCKET;

FD_CLR(socket, &_rep->wr_fd_set);

_solicitSocketCount--;

FD_CLR(socket, &_rep->ex_fd_set);

break;

_entries.remove(i);

return true;

}

return false;

Dynamic Contraction:

To remove excess entries we will start from the end of the _entries array

and remove all entries with EMPTY status until we find the first NON EMPTY.

This prevents the positions, of the NON EMPTY entries, from being changed.

index = _entries.size() - 1;

while(_entries[index]._status.get() == _MonitorEntry::EMPTY){

if(_entries.size() > MAX_NUMBER_OF_MONITOR_ENTRIES)

_entries.remove(index);

index--;

}

PEG_METHOD_EXIT();

}

Uint32 Monitor::_findEntry(Sint32 socket) const

// Note: this is no longer called with PEP 183.

PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)

{

HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm);

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p",

dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst);

try

{

for (Uint32 i = 0, n = _entries.size(); i < n; i++)

dst->run(1);

}

catch (...)

{

if (_entries[i].socket == socket)

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

return i;

"Monitor::_dispatch: exception received");

}

Tracer::trace(TRC_HTTP, Tracer::LEVEL4,

"Monitor::_dispatch: exited run() for index %d", dst->_entry_index);

PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.get() == _MonitorEntry::BUSY);

return PEG_NOT_FOUND;

// Once the HTTPConnection thread has set the status value to either

// Monitor::DYING or Monitor::IDLE, it has returned control of the connection

// to the Monitor. It is no longer permissible to access the connection

// or the entry in the _entries table.

if (dst->_connectionClosePending)

{

dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING;

}

else

{

dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE;

}

return 0;

}

PEGASUS_NAMESPACE_END

Legend:

Removed from v.1.1.2.7
changed lines
	Added in v.1.107

No CVS admin address has been configured