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

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Diff for /pegasus/src/Pegasus/Common/Monitor.cpp between version 1.1.2.1 and 1.31.2.1

version 1.1.2.1, 2001/07/26 17:19:09

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

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

// 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

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

#define FD_SETSIZE 1024

#include <Pegasus/Common/Config.h>

#include <winsock.h>

#include <cstring>

#include "Monitor.h"

#include "MessageQueue.h"

#include "Socket.h"

#include <Pegasus/Common/Tracer.h>

#include <Pegasus/Common/HTTPConnection.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 \

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

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

// Local routines:

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

static inline int select_wrapper(

int nfds,

fd_set* rd_fd_set,

fd_set* wr_fd_set,

fd_set* ex_fd_set,

const struct timeval* tv)

{

return select(FD_SETSIZE, rd_fd_set, wr_fd_set, ex_fd_set, tv);

}

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

// Routines for starting and stoping socket interface.

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

extern Uint32 _socketInterfaceInitCount;

static void _SocketInterfaceInc()

{

if (_socketInterfaceInitCount == 0)

{

WSADATA tmp;

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

WSACleanup();

}

_socketInterfaceInitCount++;

static AtomicInt _connections = 0;

}

static void _SocketInterfaceDec()

{

_socketInterfaceInitCount--;

if (_socketInterfaceInitCount == 0)

static struct timeval create_time = {0, 1};

WSACleanup();

static struct timeval destroy_time = {15, 0};

}

static struct timeval deadlock_time = {0, 0};

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

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

Monitor::Monitor()

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

{

_SocketInterfaceInc();

Socket::initializeInterface();

_rep = 0;

_rep = new MonitorRep;

_entries.reserveCapacity(32);

FD_ZERO(&_rep->rd_fd_set);

int i = 0;

FD_ZERO(&_rep->wr_fd_set);

for( ; i < 32; i++ )

FD_ZERO(&_rep->ex_fd_set);

{

FD_ZERO(&_rep->active_rd_fd_set);

_MonitorEntry entry(0, 0, 0);

FD_ZERO(&_rep->active_wr_fd_set);

_entries.append(entry);

FD_ZERO(&_rep->active_ex_fd_set);

}

MonitorHandler::~MonitorHandler()

Monitor::Monitor(Boolean async)

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

{

Socket::initializeInterface();

_rep = 0;

_entries.reserveCapacity(32);

int i = 0;

for( ; i < 32; i++ )

{

_SocketInterfaceDec();

_MonitorEntry entry(0, 0, 0);

_entries.append(entry);

}

Monitor::~Monitor()

if( _async == true )

{

delete _rep;

_thread_pool = new ThreadPool(0,

"Monitor",

create_time,

destroy_time,

deadlock_time);

}

else

_thread_pool = 0;

}

Boolean Monitor::select(Uint32 milliseconds)

Monitor::~Monitor()

{

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

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

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

"deregistering with module controller");

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

if (_entries.size() == 0)

if(_module_handle != NULL)

Sleep(milliseconds);

{

_controller->deregister_module(PEGASUS_MODULENAME_MONITOR);

_controller = 0;

delete _module_handle;

}

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

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

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

// there were no undispatched events from last time.

Socket::uninitializeInterface();

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

"returning from monitor destructor");

if(_async == true)

delete _thread_pool;

}

static int count = 0;

if (count == 0)

int Monitor::kill_idle_threads()

{

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

static struct timeval now, last;

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

gettimeofday(&now, NULL);

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

int dead_threads = 0;

const Uint32 SEC = milliseconds / 1000;

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

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

{

struct timeval tv = { SEC, USEC };

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

_thread_pool->running_count() +

count = select_wrapper(

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

FD_SETSIZE,

gettimeofday(&last, NULL);

&_rep->active_rd_fd_set,

try

&_rep->active_wr_fd_set,

&_rep->active_ex_fd_set,

&tv);

if (count == 0)

return false;

else if (count == SOCKET_ERROR)

{

count = 0;

dead_threads = _thread_pool->kill_dead_threads();

return false;

}

catch(IPCException& )

{

}

return dead_threads;

}

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

{

Sint32 socket = _entries[i].socket;

Uint32 events = 0;

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

Boolean Monitor::run(Uint32 milliseconds)

events |= READ;

{

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

Boolean handled_events = false;

events |= WRITE;

int i = 0;

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

struct timeval tv = {0,1};

events |= EXCEPTION;

fd_set fdread;

FD_ZERO(&fdread);

if (events)

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

{

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

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

{

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

}

if (!queue)

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

unsolicitSocketMessages(_entries[i].queueId);

if (events & WRITE)

#ifdef PEGASUS_OS_TYPE_WINDOWS

if(events && events != SOCKET_ERROR )

#else

if(events && events != -1 )

#endif

{

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

{

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

{

FD_CLR(socket, &_rep->active_wr_fd_set);

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

if(q == 0)

{

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

try

{

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

}

catch(...)

if (events & EXCEPTION)

{

FD_CLR(socket, &_rep->active_ex_fd_set);

}

return true;

if (events & READ)

}

try

{

FD_CLR(socket, &_rep->active_rd_fd_set);

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;

count--;

_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;

q->enqueue(msg);

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

return true;

}

catch(...)

return false;

{

}

handled_events = true;

}

return(handled_events);

}

Boolean Monitor::solicitSocketMessages(

int Monitor::solicitSocketMessages(

Sint32 socket,

Uint32 events,

Uint32 queueId);

Uint32 queueId,

int type)

{

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

Uint32 pos = _findEntry(socket);

if (pos != PEGUSUS_NOT_FOUND)

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

return false;

// Set the events:

int index = -1;

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

if (events & READ)

{

FD_SET(socket, &_rep->rd_fd_set);

try

{

if (events & WRITE)

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

FD_SET(socket, &_rep->wr_fd_set);

{

if (events & EXCEPTION)

FD_SET(socket, &_rep->ex_fd_set);

// Add the entry to the list:

_MonitorEntry entry = { socket, queueId };

_entries.append(entry);

// Success!

return true;

_entries[index].socket = socket;

_entries[index].queueId = queueId;

_entries[index]._type = type;

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

return index;

}

catch(...)

{

}

PEG_METHOD_EXIT();

return index;

}

Boolean Monitor::unolicitSocketMessages(Sint32 socket)

void Monitor::unsolicitSocketMessages(Sint32 socket)

{

// Look for the given entry and remove it:

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

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

for(int index = 0; index < (int)_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);

FD_CLR(socket, &_rep->wr_fd_set);

FD_CLR(socket, &_rep->ex_fd_set);

_entries.remove(i);

return true;

}

return false;

PEG_METHOD_EXIT();

if( _async == true )

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

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

}

Uint32 Monitor::_findEntry(Sint32 socket) const

{

PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm)

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

{

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

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

return i;

}

return PEG_NOT_FOUND;

dst->run(1);

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

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

return 0;

}

PEGASUS_NAMESPACE_END

Legend:

Removed from v.1.1.2.1
changed lines
	Added in v.1.31.2.1

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