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Diff for /pegasus/src/Pegasus/Common/Monitor.cpp between version 1.31.2.1 and 1.139.8.2

version 1.31.2.1, 2002/10/25 20:49:43

version 1.139.8.2, 2013/06/03 22:35:13

Line 1

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

//%LICENSE////////////////////////////////////////////////////////////////

// The Open Group, Tivoli Systems

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

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

// deal in the Software without restriction, including without limitation the

// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

// sell copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN

// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED

// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT

// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR

// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//==============================================================================

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

// Licensed to The Open Group (TOG) under one or more contributor license

// agreements. Refer to the OpenPegasusNOTICE.txt file distributed with

// this work for additional information regarding copyright ownership.

// Each contributor licenses this file to you under the OpenPegasus Open

// Source License; you may not use this file except in compliance with the

// License.

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

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

// to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense,

// and/or sell copies of the Software, and to permit persons to whom the

// Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// Modified By:

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

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

#include "Network.h"

#include <Pegasus/Common/Config.h>

#include <cstring>

#include "Monitor.h"

Line 34

Line 37

#include "Socket.h"

#include <Pegasus/Common/Tracer.h>

#include <Pegasus/Common/HTTPConnection.h>

#include <Pegasus/Common/HTTPAcceptor.h>

#ifdef PEGASUS_OS_TYPE_WINDOWS

#include <Pegasus/Common/MessageQueueService.h>

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

#include <Pegasus/Common/Exception.h>

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

#include "ArrayIterator.h"

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

#include "HostAddress.h"

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

#include <errno.h>

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."

# endif

# define FD_SETSIZE 1024

# include <windows.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

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static AtomicInt _connections = 0;

static struct timeval create_time = {0, 1};

static struct timeval destroy_time = {15, 0};

static struct timeval deadlock_time = {0, 0};

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

// MonitorRep

// Tickler

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

struct MonitorRep

Tickler::Tickler()

: _listenSocket(PEGASUS_INVALID_SOCKET),

_clientSocket(PEGASUS_INVALID_SOCKET),

_serverSocket(PEGASUS_INVALID_SOCKET)

{

try

{

fd_set rd_fd_set;

_initialize();

fd_set wr_fd_set;

}

fd_set ex_fd_set;

catch (...)

fd_set active_rd_fd_set;

{

fd_set active_wr_fd_set;

_uninitialize();

fd_set active_ex_fd_set;

throw;

};

}

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

Tickler::~Tickler()

{

_uninitialize();

}

void Tickler::notify()

{

Socket::write(_clientSocket, "\0", 1);

}

void Tickler::reset()

{

// Clear all bytes from the tickle socket

char buffer[32];

while (Socket::read(_serverSocket, buffer, 32) > 0)

{

}

#if defined(PEGASUS_OS_TYPE_UNIX)

// Use an anonymous pipe for the tickle connection.

void Tickler::_initialize()

{

int fds[2];

if (pipe(fds) == -1)

{

MessageLoaderParms parms(

"Common.Monitor.TICKLE_CREATE",

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

getSocketError());

throw Exception(parms);

}

_serverSocket = fds[0];

_clientSocket = fds[1];

Socket::disableBlocking(_serverSocket);

}

#else

// Use an external loopback socket connection to allow the tickle socket to

// be included in the select() array on non-Unix platforms.

void Tickler::_initialize()

{

// Monitor

// Set up the addresses for the listen, client, and server sockets

// based on whether IPv6 is enabled.

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

Monitor::Monitor()

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

{

Socket::initializeInterface();

_rep = 0;

_entries.reserveCapacity(32);

# ifdef PEGASUS_ENABLE_IPV6

int i = 0;

struct sockaddr_storage listenAddress;

for( ; i < 32; i++ )

struct sockaddr_storage clientAddress;

struct sockaddr_storage serverAddress;

# else

struct sockaddr_in listenAddress;

struct sockaddr_in clientAddress;

struct sockaddr_in serverAddress;

# endif

int addressFamily;

SocketLength addressLength;

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

# ifdef PEGASUS_ENABLE_IPV6

if (System::isIPv6StackActive())

{

_MonitorEntry entry(0, 0, 0);

// Use the IPv6 loopback address for the listen sockets

_entries.append(entry);

HostAddress::convertTextToBinary(

HostAddress::AT_IPV6,

"::1",

&reinterpret_cast<struct sockaddr_in6*>(&listenAddress)->sin6_addr);

listenAddress.ss_family = AF_INET6;

reinterpret_cast<struct sockaddr_in6*>(&listenAddress)->sin6_port = 0;

addressFamily = AF_INET6;

addressLength = sizeof(struct sockaddr_in6);

}

else

# endif

{

// Use the IPv4 loopback address for the listen sockets

HostAddress::convertTextToBinary(

HostAddress::AT_IPV4,

"127.0.0.1",

&reinterpret_cast<struct sockaddr_in*>(

&listenAddress)->sin_addr.s_addr);

reinterpret_cast<struct sockaddr_in*>(&listenAddress)->sin_family =

AF_INET;

reinterpret_cast<struct sockaddr_in*>(&listenAddress)->sin_port = 0;

addressFamily = AF_INET;

addressLength = sizeof(struct sockaddr_in);

}

Monitor::Monitor(Boolean async)

// Use the same address for the client socket as the listen socket

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

clientAddress = listenAddress;

// Set up a listen socket to allow the tickle client and server to connect

// Create the listen socket

if ((_listenSocket = Socket::createSocket(addressFamily, SOCK_STREAM, 0)) ==

PEGASUS_INVALID_SOCKET)

{

Socket::initializeInterface();

MessageLoaderParms parms(

_rep = 0;

"Common.Monitor.TICKLE_CREATE",

_entries.reserveCapacity(32);

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

int i = 0;

getSocketError());

for( ; i < 32; i++ )

throw Exception(parms);

}

// Bind the listen socket to the loopback address

if (::bind(

_listenSocket,

reinterpret_cast<struct sockaddr*>(&listenAddress),

addressLength) < 0)

{

_MonitorEntry entry(0, 0, 0);

MessageLoaderParms parms(

_entries.append(entry);

"Common.Monitor.TICKLE_BIND",

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

getSocketError());

throw Exception(parms);

}

if( _async == true )

// Listen for a connection from the tickle client

if ((::listen(_listenSocket, 3)) < 0)

{

_thread_pool = new ThreadPool(0,

MessageLoaderParms parms(

"Monitor",

"Common.Monitor.TICKLE_LISTEN",

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

getSocketError());

create_time,

throw Exception(parms);

destroy_time,

deadlock_time);

}

else

_thread_pool = 0;

// Verify we have the correct listen socket

SocketLength tmpAddressLength = addressLength;

int sock = ::getsockname(

_listenSocket,

reinterpret_cast<struct sockaddr*>(&listenAddress),

&tmpAddressLength);

if (sock < 0)

{

MessageLoaderParms parms(

"Common.Monitor.TICKLE_SOCKNAME",

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

getSocketError());

throw Exception(parms);

}

Monitor::~Monitor()

// Set up the client side of the tickle connection.

// Create the client socket

if ((_clientSocket = Socket::createSocket(addressFamily, SOCK_STREAM, 0)) ==

PEGASUS_INVALID_SOCKET)

{

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

MessageLoaderParms parms(

"deregistering with module controller");

"Common.Monitor.TICKLE_CLIENT_CREATE",

"Received error number $0 while creating the internal client "

"socket.",

getSocketError());

throw Exception(parms);

}

if(_module_handle != NULL)

// Bind the client socket to the loopback address

if (::bind(

_clientSocket,

reinterpret_cast<struct sockaddr*>(&clientAddress),

addressLength) < 0)

{

_controller->deregister_module(PEGASUS_MODULENAME_MONITOR);

MessageLoaderParms parms(

_controller = 0;

"Common.Monitor.TICKLE_CLIENT_BIND",

delete _module_handle;

"Received error number $0 while binding the internal client "

"socket.",

getSocketError());

throw Exception(parms);

}

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

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

// Connect the client socket to the listen socket address

Socket::uninitializeInterface();

if (::connect(

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

_clientSocket,

"returning from monitor destructor");

reinterpret_cast<struct sockaddr*>(&listenAddress),

if(_async == true)

addressLength) < 0)

delete _thread_pool;

{

MessageLoaderParms parms(

"Common.Monitor.TICKLE_CLIENT_CONNECT",

"Received error number $0 while connecting the internal client "

"socket.",

getSocketError());

throw Exception(parms);

}

// Set up the server side of the tickle connection.

tmpAddressLength = addressLength;

int Monitor::kill_idle_threads()

// Accept the client socket connection.

_serverSocket = ::accept(

_listenSocket,

reinterpret_cast<struct sockaddr*>(&serverAddress),

&tmpAddressLength);

if (_serverSocket == PEGASUS_SOCKET_ERROR)

{

static struct timeval now, last;

MessageLoaderParms parms(

gettimeofday(&now, NULL);

"Common.Monitor.TICKLE_ACCEPT",

int dead_threads = 0;

"Received error number $0 while accepting the internal socket "

"connection.",

getSocketError());

throw Exception(parms);

}

// Close the listen socket and make the other sockets non-blocking

if( now.tv_sec - last.tv_sec > 300 )

Socket::close(_listenSocket);

Socket::disableBlocking(_serverSocket);

Socket::disableBlocking(_clientSocket);

}

#endif

void Tickler::_uninitialize()

{

PEGASUS_STD(cout) << "Monitor Thread Pool currently has " <<

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

_thread_pool->running_count() +

_thread_pool->pool_count() << " Threads." << PEGASUS_STD(endl);

gettimeofday(&last, NULL);

try

{

dead_threads = _thread_pool->kill_dead_threads();

Socket::close(_serverSocket);

Socket::close(_clientSocket);

Socket::close(_listenSocket);

}

catch(IPCException& )

catch (...)

{

PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL2,

"Failed to close tickle sockets");

}

Socket::uninitializeInterface();

}

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

// Monitor

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

#define MAX_NUMBER_OF_MONITOR_ENTRIES 32

Monitor::Monitor()

: _stopConnections(0),

_stopConnectionsSem(0),

_solicitSocketCount(0)

{

int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES;

_entries.reserveCapacity(numberOfMonitorEntriesToAllocate);

// Create a MonitorEntry for the Tickler and set its state to IDLE so the

// Monitor will watch for its events.

_entries.append(MonitorEntry(

_tickler.getReadHandle(),

MonitorEntry::STATUS_IDLE,

MonitorEntry::TYPE_TICKLER));

// Start the count at 1 because _entries[0] is the Tickler

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

{

_entries.append(MonitorEntry());

}

return dead_threads;

}

Monitor::~Monitor()

{

PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,

"returning from monitor destructor");

}

void Monitor::tickle()

{

_tickler.notify();

}

Boolean Monitor::run(Uint32 milliseconds)

void Monitor::setState(

Uint32 index,

MonitorEntry::Status status)

{

AutoMutex autoEntryMutex(_entriesMutex);

// Set the state to requested state

_entries[index].status = status;

}

Boolean handled_events = false;

void Monitor::run(Uint32 milliseconds)

int i = 0;

{

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

struct timeval tv = {0,1};

fd_set fdread;

FD_ZERO(&fdread);

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

AutoMutex autoEntryMutex(_entriesMutex);

ArrayIterator<MonitorEntry> entries(_entries);

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

// entries

if (_stopConnections.get() == 1)

{

for (Uint32 indx = 0; indx < entries.size(); indx++)

{

if (entries[indx].type == MonitorEntry::TYPE_ACCEPTOR)

{

if (entries[indx].status != MonitorEntry::STATUS_EMPTY)

{

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

if (entries[indx].status == MonitorEntry::STATUS_IDLE ||

entries[indx].status == MonitorEntry::STATUS_DYING)

{

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

// remove the entry

entries[indx].status = MonitorEntry::STATUS_EMPTY;

}

else

{

// set status to DYING

entries[indx].status = MonitorEntry::STATUS_DYING;

}

_stopConnections = 0;

_stopConnectionsSem.signal();

}

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

for (Uint32 indx = 0; indx < entries.size(); indx++)

{

const MonitorEntry& entry = entries[indx];

if ((entry.status == MonitorEntry::STATUS_DYING) &&

(entry.type == MonitorEntry::TYPE_CONNECTION))

{

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)

{

PEG_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;

HTTPAcceptor &o = h.getOwningAcceptor();

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

message->dest = o.getQueueId();

// HTTPAcceptor is responsible for closing the connection.

// 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.

_entriesMutex.unlock();

o.enqueue(message);

_entriesMutex.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);

}

Uint32 _idleEntries = 0;

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

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.

SocketHandle maxSocketCurrentPass = 0;

for (Uint32 indx = 0; indx < entries.size(); indx++)

{

if (maxSocketCurrentPass < entries[indx].socket)

maxSocketCurrentPass = entries[indx].socket;

if (entries[indx].status == MonitorEntry::STATUS_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++;

_entriesMutex.unlock();

// 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

if(events && events != SOCKET_ERROR )

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

#else

if(events && events != -1 )

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

#endif

_entriesMutex.lock();

struct timeval timeNow;

Time::gettimeofday(&timeNow);

// 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)

{

int selectErrno = 0;

selectErrno = getSocketError();

PEG_TRACE((TRC_HTTP, Tracer::LEVEL1,

"Monitor::run - select() returned error %d.", selectErrno));

// 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(selectErrno != EBADF);

}

else if (events)

{

PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,

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

"idle entries",

events, _idleEntries));

for (Uint32 indx = 0; indx < 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 == MonitorEntry::STATUS_IDLE) &&

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

{

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

PEGASUS_ASSERT(q != 0);

PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,

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

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

try

{

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

if (entries[indx].type == MonitorEntry::TYPE_CONNECTION)

{

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

{

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

if(q == 0)

{

PEGASUS_STD(cout) << "Monitor:: found an empty connection slot" << PEGASUS_STD(endl);

PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,

"entries[%d].type is TYPE_CONNECTION",

indx));

HTTPConnection *dst =

reinterpret_cast<HTTPConnection *>(q);

dst->_entry_index = indx;

// Update idle start time because we have received some

// data. Any data is good data at this point, and we'll

// keep the connection alive, even if we've exceeded

// the idleConnectionTimeout, which will be checked

// when we call closeConnectionOnTimeout() next.

Time::gettimeofday(&dst->_idleStartTime);

// Check for accept pending (ie. SSL handshake pending)

// or idle connection timeouts for sockets from which

// we received data (avoiding extra queue lookup below).

if (!dst->closeConnectionOnTimeout(&timeNow))

{

PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,

"Entering HTTPConnection::run() for "

"indx = %d, queueId = %d, q = %p",

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

try

{

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

dst->run();

}

catch(...)

{

PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL1,

"Caught exception from "

"HTTPConnection::run()");

}

return true;

PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,

"Exited HTTPConnection::run()");

}

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();

o.enqueue(message);

return true;

}

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

else if (entries[indx].type == MonitorEntry::TYPE_TICKLER)

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

{

_tickler.reset();

}

else

{

int events = 0;

PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,

events |= SocketMessage::READ;

"Non-connection entry, indx = %d, has been "

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

"received.",

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

indx));

Message* msg = new SocketMessage(

entries[indx].socket, SocketMessage::READ);

entries[indx].status = MonitorEntry::STATUS_BUSY;

_entriesMutex.unlock();

q->enqueue(msg);

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

_entriesMutex.lock();

return true;

// After enqueue a message and the autoEntryMutex has

// been released and locked again, the array of

// entries can be changed. The ArrayIterator has to be

// reset with the latest _entries.

entries.reset(_entries);

entries[indx].status = MonitorEntry::STATUS_IDLE;

}

catch(...)

{

}

handled_events = true;

}

// else check for accept pending (ie. SSL handshake pending) or

// idle connection timeouts for sockets from which we did not

// receive data.

else if ((entries[indx].status == MonitorEntry::STATUS_IDLE) &&

entries[indx].type == MonitorEntry::TYPE_CONNECTION)

{

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

PEGASUS_ASSERT(q != 0);

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

dst->_entry_index = indx;

dst->closeConnectionOnTimeout(&timeNow);

}

// else if "events" is zero (ie. select timed out) then we still need

// to check if there are any pending SSL handshakes that have timed out.

else

{

for (Uint32 indx = 0; indx < entries.size(); indx++)

{

if ((entries[indx].status == MonitorEntry::STATUS_IDLE) &&

entries[indx].type == MonitorEntry::TYPE_CONNECTION)

{

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

PEGASUS_ASSERT(q != 0);

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

dst->_entry_index = indx;

dst->closeConnectionOnTimeout(&timeNow);

}

return(handled_events);

void Monitor::stopListeningForConnections(Boolean wait)

{

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

// set boolean then tickle the server to recognize _stopConnections

_stopConnections = 1;

tickle();

if (wait)

{

// 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();

}

PEG_METHOD_EXIT();

}

int Monitor::solicitSocketMessages(

Sint32 socket,

SocketHandle socket,

Uint32 events,

Uint32 queueId,

int type)

Uint32 type)

{

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

AutoMutex autoMut(_entriesMutex);

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

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

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

// current connections requested

_solicitSocketCount++; // bump the count

for (Uint32 i = _entries.size(); i < _solicitSocketCount + 1; i++)

{

_entries.append(MonitorEntry());

}

int index = -1;

for (Uint32 index = 1; index < _entries.size(); index++)

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

{

try

{

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

if (_entries[index].status == MonitorEntry::STATUS_EMPTY)

{

_entries[index].socket = socket;

_entries[index].queueId = queueId;

_entries[index]._type = type;

_entries[index].type = type;

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

_entries[index].status = MonitorEntry::STATUS_IDLE;

return index;

PEG_METHOD_EXIT();

return (int)index;

}

catch(...)

{

}

// decrease the count, if we are here we didn't do anything meaningful

_solicitSocketCount--;

PEG_METHOD_EXIT();

return index;

return -1;

}

void Monitor::unsolicitSocketMessages(Sint32 socket)

void Monitor::unsolicitSocketMessages(SocketHandle socket)

{

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

AutoMutex autoMut(_entriesMutex);

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

Start at index = 1 because _entries[0] is the tickle entry which

never needs to be reset to EMPTY;

for (Uint32 index = 1; index < _entries.size(); index++)

{

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

{

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

_entries[index].reset();

_solicitSocketCount--;

break;

}

PEG_METHOD_EXIT();

if( _async == true )

Dynamic Contraction:

PEGASUS_STD(cout) << "Monitor:: running " << _thread_pool->running_count() <<

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

" idle " << _thread_pool->pool_count() << PEGASUS_STD(endl);

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.

for (Uint32 index = _entries.size() - 1;

PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)

(_entries[index].status == MonitorEntry::STATUS_EMPTY) &&

(index >= MAX_NUMBER_OF_MONITOR_ENTRIES);

index--)

{

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

_entries.remove(index);

dst->run(1);

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

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

return 0;

}

PEG_METHOD_EXIT();

}

PEGASUS_NAMESPACE_END

Legend:

Removed from v.1.31.2.1
changed lines
	Added in v.1.139.8.2

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