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 1.49 and 1.104

version 1.49, 2003/09/26 19:04:06

version 1.104, 2006/06/07 06:58:12

Line 1

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

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

// The Open Group, Tivoli Systems

// 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 24

Line 32

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

// 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)

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

Line 35

Line 48

#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"

#ifdef PEGASUS_OS_TYPE_WINDOWS

# if defined(FD_SETSIZE) && FD_SETSIZE != 1024

# error "FD_SETSIZE was not set to 1024 prior to the last inclusion \

of <winsock.h>. It may have been indirectly included (e.g., by including \

<windows.h>). Finthe inclusion of that header which is visible to this \

<windows.h>). Find inclusion of that header which is visible to this \

compilation unit and #define FD_SETZIE to 1024 prior to that inclusion; \

otherwise, less than 64 clients (the default) will be able to connect to the \

CIMOM. PLEASE DO NOT SUPPRESS THIS WARNING; PLEASE FIX THE PROBLEM."

Line 56

Line 72

# include <netdb.h>

# include <arpa/inet.h>

#endif

# include <netinet/tcp.h>

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static AtomicInt _connections(0);

static AtomicInt _connections = 0;

static struct timeval create_time = {0, 1};

static struct timeval destroy_time = {300, 0};

static struct timeval deadlock_time = {0, 0};

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

// 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;

};

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

Line 91

Line 86

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

#define MAX_NUMBER_OF_MONITOR_ENTRIES 32

Monitor::Monitor()

: _module_handle(0), _controller(0), _async(false), _stopConnections(0)

: _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();

_rep = 0;

_entries.reserveCapacity(numberOfMonitorEntriesToAllocate);

_entries.reserveCapacity(32);

for( int i = 0; i < 32; i++ )

// 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++ )

{

_MonitorEntry entry(0, 0, 0);

_entries.append(entry);

}

Monitor::Monitor(Boolean async)

Monitor::~Monitor()

: _module_handle(0), _controller(0), _async(async), _stopConnections(0)

{

Socket::initializeInterface();

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

_rep = 0;

_entries.reserveCapacity(32);

try{

for( int i = 0; i < 32; i++ )

if(_tickle_peer_socket >= 0)

{

_MonitorEntry entry(0, 0, 0);

Socket::close(_tickle_peer_socket);

_entries.append(entry);

}

if( _async == true )

if(_tickle_client_socket >= 0)

{

_thread_pool = new ThreadPool(0,

Socket::close(_tickle_client_socket);

"Monitor",

create_time,

destroy_time,

deadlock_time);

}

else

if(_tickle_server_socket >= 0)

_thread_pool = 0;

{

Socket::close(_tickle_server_socket);

}

Monitor::~Monitor()

catch(...)

{

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

"deregistering with module controller");

"Failed to close tickle sockets");

if(_module_handle != NULL)

{

_controller->deregister_module(PEGASUS_MODULENAME_MONITOR);

_controller = 0;

delete _module_handle;

}

Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "deleting rep");

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

Socket::uninitializeInterface();

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

"returning from monitor destructor");

if(_async == true)

delete _thread_pool;

}

int Monitor::kill_idle_threads()

{

static struct timeval now, last;

gettimeofday(&now, NULL);

int dead_threads = 0;

if( now.tv_sec - last.tv_sec > 120 )

{

gettimeofday(&last, NULL);

try

{

dead_threads = _thread_pool->kill_dead_threads();

}

catch(IPCException& )

{

}

return dead_threads;

}

void Monitor::initializeTickler(){

Boolean Monitor::run(Uint32 milliseconds)

{

NOTE: On any errors trying to

setup out tickle connection,

Boolean handled_events = false;

throw an exception/end the server

int i = 0;

#if defined(PEGASUS_OS_OS400) || defined(PEGASUS_OS_HPUX)

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

/* setup the tickle server/listener */

// get a socket for the server side

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.",

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

struct timeval tv = {0, 1};

WSAGetLastError());

#endif

fd_set fdread;

throw Exception(parms);

FD_ZERO(&fdread);

_entry_mut.lock(pegasus_thread_self());

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

if (_stopConnections == 1)

{

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

{

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

{

if ( _entries[indx]._status.value() != _MonitorEntry::EMPTY)

{

if ( _entries[indx]._status.value() == _MonitorEntry::IDLE ||

_entries[indx]._status.value() == _MonitorEntry::DYING )

{

// remove the entry

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

}

else

{

// set status to DYING

_entries[indx]._status.value() == _MonitorEntry::DYING;

}

_stopConnections = 0;

}

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

// set TCP_NODELAY

{

int opt = 1;

if(_entries[indx]._status.value() == _MonitorEntry::IDLE)

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

{

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

}

// initialize the address

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

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#pragma convert(37)

#endif

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

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#pragma convert(0)

#endif

_tickle_server_addr.sin_family = PF_INET;

_tickle_server_addr.sin_port = 0;

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

PEGASUS_SOCKLEN_T _addr_size = sizeof(_tickle_server_addr);

#ifdef PEGASUS_OS_TYPE_WINDOWS

// bind server side to socket

if(events && events != 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

if(events && events != -1 )

MessageLoaderParms parms("Common.Monitor.TICKLE_BIND",

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

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

{

#endif

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

throw Exception(parms);

{

if(FD_ISSET(_entries[indx].socket, &fdread))

{

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

if(q == 0)

{

try

{

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

}

catch(...)

{

// 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.",

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

throw Exception(parms);

}

continue;

}

try

{

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

{

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

if(static_cast<HTTPConnection *>(q)->_dying.value() > 0 )

{

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

MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner();

Message* message= new CloseConnectionMessage(_entries[indx].socket);

message->dest = o.getQueueId();

_entry_mut.unlock();

o.enqueue(message);

return true;

}

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

_thread_pool->allocate_and_awaken((void *)q, _dispatch);

}

else

{

int events = 0;

events |= SocketMessage::READ;

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

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

_entry_mut.unlock();

q->enqueue(msg);

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

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

int sock = ::getsockname(_tickle_server_socket,

return true;

reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),

}

&_addr_size);

}

if(sock < 0){

catch(...)

// handle error

{

MessageLoaderParms parms("Common.Monitor.TICKLE_SOCKNAME",

}

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

handled_events = true;

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

}

errno);

}

#else

}

WSAGetLastError());

_entry_mut.unlock();

#endif

return(handled_events);

throw Exception(parms);

}

void Monitor::stopListeningForConnections()

/* set up the tickle client/connector */

{

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

_stopConnections = 1;

PEG_METHOD_EXIT();

// 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.",

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

throw Exception(parms);

}

// set TCP_NODELAY

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

int Monitor::solicitSocketMessages(

// setup the address of the client

Sint32 socket,

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

Uint32 events,

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

Uint32 queueId,

#pragma convert(37)

int type)

#endif

{

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

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

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

#pragma convert(0)

#endif

int index = -1;

_tickle_client_addr.sin_family = PF_INET;

_entry_mut.lock(pegasus_thread_self());

_tickle_client_addr.sin_port = 0;

for(index = 0; index < (int)_entries.size(); index++)

{

try

{

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

{

_entries[index].socket = socket;

_entries[index].queueId = queueId;

_entries[index]._type = type;

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

_entry_mut.unlock();

return index;

// bind socket to client side

}

if((::bind(_tickle_client_socket,

}

reinterpret_cast<struct sockaddr*>(&_tickle_client_addr),

catch(...)

sizeof(_tickle_client_addr))) < 0){

{

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_BIND",

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

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

throw Exception(parms);

}

// connect to server side

_entry_mut.unlock();

if((::connect(_tickle_client_socket,

PEG_METHOD_EXIT();

reinterpret_cast<struct sockaddr*>(&_tickle_server_addr),

return index;

sizeof(_tickle_server_addr))) < 0){

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CONNECT",

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

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

throw Exception(parms);

}

void Monitor::unsolicitSocketMessages(Sint32 socket)

/* set up the slave connection */

{

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

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

PEGASUS_SOCKLEN_T peer_size = sizeof(_tickle_peer_addr);

_entry_mut.lock(pegasus_thread_self());

pegasus_sleep(1);

for(int index = 0; index < (int)_entries.size(); index++)

// 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,

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

reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr),

{

&peer_size)) < 0){

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

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

break;

// 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

}

_entry_mut.unlock();

if(_tickle_peer_socket == -1){

PEG_METHOD_EXIT();

// handle error

MessageLoaderParms parms("Common.Monitor.TICKLE_ACCEPT",

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

#if !defined(PEGASUS_OS_TYPE_WINDOWS)

errno);

#else

WSAGetLastError());

#endif

throw Exception(parms);

}

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

PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)

// checks entries with IDLE state for events

{

_MonitorEntry entry(_tickle_peer_socket, 1, INTERNAL);

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

entry._status = _MonitorEntry::IDLE;

_entries.append(entry);

dst->run(1);

if( dst->_monitor->_entries.size() > (Uint32)dst->_entry_index )

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

return 0;

}

void Monitor::tickle(void)

////************************* monitor 2 *****************************////

m2e_rep::m2e_rep(void)

:Base(), state(IDLE)

{

}

static char _buffer[] =

m2e_rep::m2e_rep(monitor_2_entry_type _type,

pegasus_socket _sock,

void* _accept,

void* _dispatch)

: Base(), type(_type), state(IDLE), psock(_sock),

accept_parm(_accept), dispatch_parm(_dispatch)

{

'0','0'

};

AutoMutex autoMutex(_tickle_mutex);

Socket::disableBlocking(_tickle_client_socket);

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

Socket::enableBlocking(_tickle_client_socket);

}

m2e_rep::~m2e_rep(void)

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

{

// Set the state to requested state

_entries[index]._status = status;

}

m2e_rep::m2e_rep(const m2e_rep& r)

Boolean Monitor::run(Uint32 milliseconds)

: Base()

{

if(this != &r){

type = r.type;

psock = r.psock;

accept_parm = r.accept_parm;

dispatch_parm = r.dispatch_parm;

state = IDLE;

}

Boolean handled_events = false;

}

int i = 0;

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

m2e_rep& m2e_rep::operator =(const m2e_rep& r)

fd_set fdread;

{

FD_ZERO(&fdread);

if(this != &r) {

type = r.type;

psock = r.psock;

accept_parm = r.accept_parm;

dispatch_parm = r.dispatch_parm;

state = IDLE;

}

return *this;

}

Boolean m2e_rep::operator ==(const m2e_rep& r)

AutoMutex autoEntryMutex(_entry_mut);

{

if(this == &r)

return true;

return false;

}

Boolean m2e_rep::operator ==(void* r)

ArrayIterator<_MonitorEntry> entries(_entries);

{

if((void*)this == r)

return true;

return false;

}

m2e_rep::operator pegasus_socket() const

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

if (_stopConnections.get() == 1)

{

return psock;

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

}

monitor_2_entry::monitor_2_entry(void)

{

_rep = new m2e_rep();

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

}

monitor_2_entry::monitor_2_entry(pegasus_socket& _psock,

monitor_2_entry_type _type,

void* _accept_parm, void* _dispatch_parm)

{

_rep = new m2e_rep(_type, _psock, _accept_parm, _dispatch_parm);

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

}

monitor_2_entry::monitor_2_entry(const monitor_2_entry& e)

{

if(this != &e){

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

Inc(this->_rep = e._rep);

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

}

monitor_2_entry::~monitor_2_entry(void)

{

Dec(_rep);

// remove the entry

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

}

else

monitor_2_entry& monitor_2_entry::operator=(const monitor_2_entry& e)

{

if(this != &e){

// set status to DYING

Dec(_rep);

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

Inc(this->_rep = e._rep);

}

return *this;

}

Boolean monitor_2_entry::operator ==(const monitor_2_entry& me) const

{

if(this == &me)

return true;

return false;

}

Boolean monitor_2_entry::operator ==(void* k) const

{

if((void *)this == k)

return true;

return false;

}

_stopConnections = 0;

_stopConnectionsSem.signal();

monitor_2_entry_type monitor_2_entry::get_type(void) const

{

return _rep->type;

}

void monitor_2_entry::set_type(monitor_2_entry_type t)

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

{

_rep->type = t;

const _MonitorEntry &entry = entries[indx];

}

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

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

{

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

PEGASUS_ASSERT(q != 0);

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

if (h._connectionClosePending == false)

continue;

monitor_2_entry_state monitor_2_entry::get_state(void) const

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

{

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

return (monitor_2_entry_state) _rep->state.value();

// _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();

void monitor_2_entry::set_state(monitor_2_entry_state t)

// HTTPAcceptor is responsible for closing the connection.

{

// The lock is released to allow HTTPAcceptor to call

_rep->state = t;

// 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.

void* monitor_2_entry::get_accept(void) const

autoEntryMutex.unlock();

{

o.enqueue(message);

return _rep->accept_parm;

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);

}

void monitor_2_entry::set_accept(void* a)

{

_rep->accept_parm = a;

}

Uint32 _idleEntries = 0;

void* monitor_2_entry::get_dispatch(void) const

{

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

return _rep->dispatch_parm;

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

}

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

because we have to traverse the entire array.

void monitor_2_entry::set_dispatch(void* a)

PEGASUS_SOCKET maxSocketCurrentPass = 0;

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

{

_rep->dispatch_parm = a;

if(maxSocketCurrentPass < entries[indx].socket)

}

maxSocketCurrentPass = entries[indx].socket;

pegasus_socket monitor_2_entry::get_sock(void) const

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

{

return _rep->psock;

_idleEntries++;

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

}

void monitor_2_entry::set_sock(pegasus_socket& s)

{

_rep->psock = s;

}

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

descriptors starting at 0.

maxSocketCurrentPass++;

AsyncDQueue<HTTPConnection2> monitor_2::_connections(true, 0);

autoEntryMutex.unlock();

monitor_2::monitor_2(void)

: _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0),

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

_ready(true, 0), _die(0), _requestCount(0)

// 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.

try {

#ifdef PEGASUS_OS_TYPE_WINDOWS

bsd_socket_factory _factory;

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

// set up the listener/acceptor

pegasus_socket temp = pegasus_socket(&_factory);

temp.socket(PF_INET, SOCK_STREAM, 0);

// initialize the address

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

#ifdef PEGASUS_OS_ZOS

_tickle_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");

#else

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

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

#endif

_tickle_addr.sin_family = PF_INET;

autoEntryMutex.lock();

_tickle_addr.sin_port = 0;

// 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

PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_addr);

entries.reset(_entries);

#ifdef PEGASUS_OS_TYPE_WINDOWS

temp.bind((struct sockaddr *)&_tickle_addr, sizeof(_tickle_addr));

if(events == SOCKET_ERROR)

temp.listen(3);

temp.getsockname((struct sockaddr*)&_tickle_addr, &_addr_size);

// set up the connector

pegasus_socket tickler = pegasus_socket(&_factory);

tickler.socket(PF_INET, SOCK_STREAM, 0);

struct sockaddr_in _addr;

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

#ifdef PEGASUS_OS_ZOS

_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1");

#else

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

if(events == -1)

#endif

_addr.sin_family = PF_INET;

{

_addr.sin_port = 0;

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

tickler.bind((struct sockaddr*)&_addr, sizeof(_addr));

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

tickler.connect((struct sockaddr*)&_tickle_addr, sizeof(_tickle_addr));

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

// descriptions was not valid. This could indicate that

_tickler.set_sock(tickler);

// the entries structure has been corrupted or that

_tickler.set_type(INTERNAL);

// we have a synchronization error.

_tickler.set_state(BUSY);

struct sockaddr_in peer;

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

PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer);

pegasus_socket accepted = temp.accept((struct sockaddr*)&peer, &peer_size);

monitor_2_entry* _tickle = new monitor_2_entry(accepted, INTERNAL, 0, 0);

_tickle->set_state(BUSY);

_listeners.insert_first(_tickle);

PEGASUS_ASSERT(errno != EBADF);

}

catch(...){ }

else if (events)

}

monitor_2::~monitor_2(void)

{

try {

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

monitor_2_entry* temp = _listeners.remove_first();

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

while(temp){

events, _idleEntries);

delete temp;

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

temp = _listeners.remove_first();

{

}

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

}

// owned by the Monitor).

catch(...){ }

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

}

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

void monitor_2::run(void)

{

monitor_2_entry* temp;

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

while(_die.value() == 0) {

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

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

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

PEGASUS_ASSERT(q !=0);

struct timeval tv = {0, 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;

// place all sockets in the select set

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

FD_ZERO(&rd_fd_set);

// the request has been read.

try {

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

_listeners.lock(pegasus_thread_self());

temp = _listeners.next(0);

// If allocate_and_awaken failure, retry on next iteration

while(temp != 0 ){

/* Removed for PEP 183.

if(temp->get_state() == CLOSED ){

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

monitor_2_entry* closed = temp;

(void *)q, _dispatch))

temp = _listeners.next(closed);

{

_listeners.remove_no_lock(closed);

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

HTTPConnection2 *cn = monitor_2::remove_connection((Sint32)(closed->get_sock()));

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

delete cn;

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

delete closed;

return true;

}

if(temp == 0)

break;

Sint32 fd = (Sint32) temp->get_sock();

if(fd >= 0 )

FD_SET(fd , &rd_fd_set);

temp = _listeners.next(temp);

}

_listeners.unlock();

}

catch(...){

return;

}

// important - the dispatch routine has pointers to all the

// entries that are readable. These entries can be changed but

// Added for PEP 183

// the pointer must not be tampered with.

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

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

int events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, NULL);

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

try {

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

_listeners.lock(pegasus_thread_self());

temp = _listeners.next(0);

while(temp != 0 ){

Sint32 fd = (Sint32) temp->get_sock();

if(fd >= 0 && FD_ISSET(fd, &rd_fd_set)) {

temp->set_state(BUSY);

FD_CLR(fd, &rd_fd_set);

monitor_2_entry* ready = new monitor_2_entry(*temp);

try

{

_ready.insert_first(ready);

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);

_requestCount++;

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

}

// The following will fail in that case.

temp = _listeners.next(temp);

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

}

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

_listeners.unlock();

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

}

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

catch(...){

// or the entry in the _entries table.

return;

}

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

// now handle the sockets that are ready to read

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

_dispatch();

//if (dst->_connectionClosePending)

} // while alive

//{

}

// 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

void* monitor_2::set_session_dispatch(void (*dp)(monitor_2_entry*))

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

{

static char buffer[2];

void* old = (void *)_session_dispatch;

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

_session_dispatch = dp;

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

return old;

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

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

}

else

void* monitor_2::set_accept_dispatch(void (*dp)(monitor_2_entry*))

{

void* old = (void*)_accept_dispatch;

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

_accept_dispatch = dp;

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

return old;

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;

}

// important - the dispatch routine has pointers to all the

// entries that are readable. These entries can be changed but

// the pointer must not be tampered with.

void monitor_2::_dispatch(void)

{

monitor_2_entry* entry;

if(_ready.count() == 0 )

return;

try

{

entry = _ready.remove_first();

}

catch(...)

{

}

handled_events = true;

while(entry != 0 ) {

switch(entry->get_type()) {

case INTERNAL:

static char buffer[2];

entry->get_sock().disableBlocking();

entry->get_sock().read(&buffer, 2);

entry->get_sock().enableBlocking();

break;

case LISTEN:

{

static struct sockaddr peer;

static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer);

entry->get_sock().disableBlocking();

pegasus_socket connected = entry->get_sock().accept(&peer, &peer_size);

entry->get_sock().enableBlocking();

monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch());

if(temp && _accept_dispatch != 0)

_accept_dispatch(temp);

}

break;

case SESSION:

if(_session_dispatch != 0 )

_session_dispatch(entry);

else {

static char buffer[4096];

int bytes = entry->get_sock().read(&buffer, 4096);

}

break;

case UNTYPED:

default:

break;

}

_requestCount--;

delete entry;

if(_ready.count() == 0 )

break;

try

{

entry = _ready.remove_first();

}

catch(...)

{

}

return(handled_events);

}

void monitor_2::stop(void)

void Monitor::stopListeningForConnections(Boolean wait)

{

_die = 1;

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

// set boolean then tickle the server to recognize _stopConnections

_stopConnections = 1;

tickle();

// shut down the listener list, free the list nodes

if (wait)

_tickler.get_sock().close();

_listeners.shutdown_queue();

}

void monitor_2::tickle(void)

{

static char _buffer[] =

{

'0','0'

// 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();

}

_tickler.get_sock().write(&_buffer, 2);

PEG_METHOD_EXIT();

}

monitor_2_entry* monitor_2::add_entry(pegasus_socket& ps,

int Monitor::solicitSocketMessages(

monitor_2_entry_type type,

PEGASUS_SOCKET socket,

void* accept_parm,

Uint32 events,

void* dispatch_parm)

Uint32 queueId,

int type)

{

monitor_2_entry* m2e = new monitor_2_entry(ps, type, accept_parm, dispatch_parm);

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

AutoMutex autoMut(_entry_mut);

try{

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

_listeners.insert_first(m2e);

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

}

// current connections requested

catch(...){

_solicitSocketCount++; // bump the count

delete m2e;

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

return 0;

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

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

_MonitorEntry entry(0, 0, 0);

_entries.append(entry);

}

tickle();

return m2e;

}

Boolean monitor_2::remove_entry(Sint32 s)

int index;

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

{

monitor_2_entry* temp;

try

try {

{

_listeners.try_lock(pegasus_thread_self());

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

temp = _listeners.next(0);

{

while(temp != 0){

_entries[index].socket = socket;

if(s == (Sint32)temp->_rep->psock ){

_entries[index].queueId = queueId;

temp = _listeners.remove_no_lock(temp);

_entries[index]._type = type;

delete temp;

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

_listeners.unlock();

return true;

return index;

}

temp = _listeners.next(temp);

}

_listeners.unlock();

}

catch(...){

catch(...)

{

}

return false;

}

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

Uint32 monitor_2::getOutstandingRequestCount(void)

PEG_METHOD_EXIT();

{

return -1;

return _requestCount.value();

}

void Monitor::unsolicitSocketMessages(PEGASUS_SOCKET socket)

HTTPConnection2* monitor_2::remove_connection(Sint32 sock)

{

HTTPConnection2* temp;

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

try

AutoMutex autoMut(_entry_mut);

{

monitor_2::_connections.lock(pegasus_thread_self());

temp = monitor_2::_connections.next(0);

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

while(temp != 0 )

to be EMPTY;

unsigned int index;

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

{

if(sock == temp->getSocket())

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

{

temp = monitor_2::_connections.remove_no_lock(temp);

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

monitor_2::_connections.unlock();

_entries[index].socket = PEGASUS_INVALID_SOCKET;

return temp;

_solicitSocketCount--;

}

break;

temp = monitor_2::_connections.next(temp);

}

monitor_2::_connections.unlock();

}

catch(...)

{

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--;

}

return 0;

PEG_METHOD_EXIT();

}

Boolean monitor_2::insert_connection(HTTPConnection2* connection)

// 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

{

monitor_2::_connections.insert_first(connection);

dst->run(1);

}

catch(...)

{

return false;

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

}

"Monitor::_dispatch: exception received");

return true;

}

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);

// 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.1.49
changed lines
	Added in v.1.104

No CVS admin address has been configured