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Diff for /pegasus/src/Pegasus/Common/Monitor.cpp between version 1.121.4.3 and 1.130

version 1.121.4.3, 2007/12/14 20:31:37 version 1.130, 2008/02/27 20:21:17
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 #include <Pegasus/Common/Exception.h> #include <Pegasus/Common/Exception.h>
 #include "ArrayIterator.h" #include "ArrayIterator.h"
 #include "HostAddress.h" #include "HostAddress.h"
 #include <errno.h>  
  
 PEGASUS_USING_STD; PEGASUS_USING_STD;
  
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     //     //
  
     Socket::close(_listenSocket);     Socket::close(_listenSocket);
     _listenSocket = PEGASUS_INVALID_SOCKET;  
   
     Socket::disableBlocking(_serverSocket);     Socket::disableBlocking(_serverSocket);
     Socket::disableBlocking(_clientSocket);     Socket::disableBlocking(_clientSocket);
 } }
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     try     try
     {     {
         if (_serverSocket != PEGASUS_INVALID_SOCKET)  
         {  
             Socket::close(_serverSocket);             Socket::close(_serverSocket);
             _serverSocket = PEGASUS_INVALID_SOCKET;  
         }  
         if (_clientSocket != PEGASUS_INVALID_SOCKET)  
         {  
             Socket::close(_clientSocket);             Socket::close(_clientSocket);
             _clientSocket = PEGASUS_INVALID_SOCKET;  
         }  
         if (_listenSocket != PEGASUS_INVALID_SOCKET)  
         {  
             Socket::close(_listenSocket);             Socket::close(_listenSocket);
             _listenSocket = PEGASUS_INVALID_SOCKET;  
         }  
     }     }
     catch (...)     catch (...)
     {     {
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     // Create a MonitorEntry for the Tickler and set its state to IDLE so the     // Create a MonitorEntry for the Tickler and set its state to IDLE so the
     // Monitor will watch for its events.     // Monitor will watch for its events.
     _MonitorEntry entry(_tickler.getServerSocket(), 1, INTERNAL);      _entries.append(MonitorEntry(
     entry._status = _MonitorEntry::IDLE;          _tickler.getServerSocket(),
     _entries.append(entry);          1,
           MonitorEntry::STATUS_IDLE,
           MonitorEntry::TYPE_INTERNAL));
  
     // Start the count at 1 because _entries[0] is the Tickler     // Start the count at 1 because _entries[0] is the Tickler
     for (int i = 1; i < numberOfMonitorEntriesToAllocate; i++)     for (int i = 1; i < numberOfMonitorEntriesToAllocate; i++)
     {     {
        _MonitorEntry entry(0, 0, 0);          _entries.append(MonitorEntry());
        _entries.append(entry);  
     }     }
 } }
  
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 void Monitor::tickle() void Monitor::tickle()
 { {
     AutoMutex autoMutex(_tickleMutex);      Socket::write(_tickler.getClientSocket(), "\0", 1);
     Socket::write(_tickler.getClientSocket(), "\0\0", 2);  
 } }
  
 void Monitor::setState( void Monitor::setState(
     Uint32 index,     Uint32 index,
     _MonitorEntry::entry_status status)      MonitorEntry::Status status)
 { {
     AutoMutex autoEntryMutex(_entry_mut);      AutoMutex autoEntryMutex(_entriesMutex);
     // Set the state to requested state     // Set the state to requested state
     _entries[index]._status = status;      _entries[index].status = status;
 } }
  
 void Monitor::run(Uint32 milliseconds) void Monitor::run(Uint32 milliseconds)
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     fd_set fdread;     fd_set fdread;
     FD_ZERO(&fdread);     FD_ZERO(&fdread);
  
     AutoMutex autoEntryMutex(_entry_mut);      AutoMutex autoEntryMutex(_entriesMutex);
  
     ArrayIterator<_MonitorEntry> entries(_entries);      ArrayIterator<MonitorEntry> entries(_entries);
  
     // Check the stopConnections flag.  If set, clear the Acceptor monitor     // Check the stopConnections flag.  If set, clear the Acceptor monitor
     // entries     // entries
     if (_stopConnections.get() == 1)     if (_stopConnections.get() == 1)
     {     {
         for ( int indx = 0; indx < (int)entries.size(); indx++)          for (Uint32 indx = 0; indx < entries.size(); indx++)
         {         {
             if (entries[indx]._type == Monitor::ACCEPTOR)              if (entries[indx].type == MonitorEntry::TYPE_ACCEPTOR)
             {             {
                 if ( entries[indx]._status.get() != _MonitorEntry::EMPTY)                  if (entries[indx].status != MonitorEntry::STATUS_EMPTY)
                 {                 {
                    if ( entries[indx]._status.get() == _MonitorEntry::IDLE ||                      if (entries[indx].status == MonitorEntry::STATUS_IDLE ||
                         entries[indx]._status.get() == _MonitorEntry::DYING )                          entries[indx].status == MonitorEntry::STATUS_DYING)
                    {                    {
                        // remove the entry                        // remove the entry
                        entries[indx]._status = _MonitorEntry::EMPTY;                          entries[indx].status = MonitorEntry::STATUS_EMPTY;
                    }                    }
                    else                    else
                    {                    {
                        // set status to DYING                        // set status to DYING
                       entries[indx]._status = _MonitorEntry::DYING;                          entries[indx].status = MonitorEntry::STATUS_DYING;
                    }                    }
                }                }
            }            }
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         _stopConnectionsSem.signal();         _stopConnectionsSem.signal();
     }     }
  
     for (int indx = 0; indx < (int)entries.size(); indx++)      for (Uint32 indx = 0; indx < entries.size(); indx++)
     {     {
         const _MonitorEntry &entry = entries[indx];          const MonitorEntry& entry = entries[indx];
         if ((entry._status.get() == _MonitorEntry::DYING) &&  
             (entry._type == Monitor::CONNECTION))          if ((entry.status == MonitorEntry::STATUS_DYING) &&
               (entry.type == MonitorEntry::TYPE_CONNECTION))
         {         {
             MessageQueue *q = MessageQueue::lookup(entry.queueId);             MessageQueue *q = MessageQueue::lookup(entry.queueId);
             PEGASUS_ASSERT(q != 0);             PEGASUS_ASSERT(q != 0);
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             // unlocked will not result in an ArrayIndexOutOfBounds             // unlocked will not result in an ArrayIndexOutOfBounds
             // exception.             // exception.
  
             _entry_mut.unlock();              _entriesMutex.unlock();
             o.enqueue(message);             o.enqueue(message);
             _entry_mut.lock();              _entriesMutex.lock();
  
             // After enqueue a message and the autoEntryMutex has been             // After enqueue a message and the autoEntryMutex has been
             // released and locked again, the array of _entries can be             // released and locked again, the array of _entries can be
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         because we have to traverse the entire array.         because we have to traverse the entire array.
     */     */
     SocketHandle maxSocketCurrentPass = 0;     SocketHandle maxSocketCurrentPass = 0;
     for (int indx = 0; indx < (int)entries.size(); indx++)      for (Uint32 indx = 0; indx < entries.size(); indx++)
     {     {
        if (maxSocketCurrentPass < entries[indx].socket)        if (maxSocketCurrentPass < entries[indx].socket)
            maxSocketCurrentPass = entries[indx].socket;            maxSocketCurrentPass = entries[indx].socket;
  
        if (entries[indx]._status.get() == _MonitorEntry::IDLE)          if (entries[indx].status == MonitorEntry::STATUS_IDLE)
        {        {
            _idleEntries++;            _idleEntries++;
            FD_SET(entries[indx].socket, &fdread);            FD_SET(entries[indx].socket, &fdread);
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     */     */
     maxSocketCurrentPass++;     maxSocketCurrentPass++;
  
     _entry_mut.unlock();      _entriesMutex.unlock();
  
     //     //
     // The first argument to select() is ignored on Windows and it is not     // The first argument to select() is ignored on Windows and it is not
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 #else #else
     int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv);     int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv);
 #endif #endif
     _entry_mut.lock();      int selectErrno = getSocketError();
   
       _entriesMutex.lock();
  
     struct timeval timeNow;     struct timeval timeNow;
     Time::gettimeofday(&timeNow);     Time::gettimeofday(&timeNow);
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     if (events == PEGASUS_SOCKET_ERROR)     if (events == PEGASUS_SOCKET_ERROR)
     {     {
         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,
             "Monitor::run - errorno = %d has occurred on select.", errno));              "Monitor::run - select() returned error %d.", selectErrno));
         // The EBADF error indicates that one or more or the file         // The EBADF error indicates that one or more or the file
         // descriptions was not valid. This could indicate that         // descriptions was not valid. This could indicate that
         // the entries structure has been corrupted or that         // the entries structure has been corrupted or that
         // we have a synchronization error.         // we have a synchronization error.
  
         PEGASUS_ASSERT(errno != EBADF);          PEGASUS_ASSERT(selectErrno != EBADF);
     }     }
     else if (events)     else if (events)
     {     {
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             "Monitor::run select event received events = %d, monitoring %d "             "Monitor::run select event received events = %d, monitoring %d "
                 "idle entries",                 "idle entries",
             events, _idleEntries));             events, _idleEntries));
         for (int indx = 0; indx < (int)entries.size(); indx++)          for (Uint32 indx = 0; indx < entries.size(); indx++)
         {         {
             // The Monitor should only look at entries in the table that are             // The Monitor should only look at entries in the table that are
             // IDLE (i.e., owned by the Monitor).             // IDLE (i.e., owned by the Monitor).
             if ((entries[indx]._status.get() == _MonitorEntry::IDLE) &&              if ((entries[indx].status == MonitorEntry::STATUS_IDLE) &&
                 (FD_ISSET(entries[indx].socket, &fdread)))                 (FD_ISSET(entries[indx].socket, &fdread)))
             {             {
                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);
                   PEGASUS_ASSERT(q != 0);
                 PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,                 PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,
                     "Monitor::run indx = %d, queueId =  %d, q = %p",                     "Monitor::run indx = %d, queueId =  %d, q = %p",
                     indx, entries[indx].queueId, q));                     indx, entries[indx].queueId, q));
                 PEGASUS_ASSERT(q !=0);  
  
                 try                 try
                 {                 {
                     if (entries[indx]._type == Monitor::CONNECTION)                      if (entries[indx].type == MonitorEntry::TYPE_CONNECTION)
                     {                     {
                         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,                         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,
                             "entries[indx].type for indx = %d is "                              "entries[%d].type is TYPE_CONNECTION",
                                 "Monitor::CONNECTION",  
                             indx));                             indx));
   
                         HTTPConnection *dst =                         HTTPConnection *dst =
                             reinterpret_cast<HTTPConnection *>(q);                             reinterpret_cast<HTTPConnection *>(q);
                         dst->_entry_index = indx;                         dst->_entry_index = indx;
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                         // we received data (avoiding extra queue lookup below).                         // we received data (avoiding extra queue lookup below).
                         if (!dst->closeConnectionOnTimeout(&timeNow))                         if (!dst->closeConnectionOnTimeout(&timeNow))
                         {                         {
   
                         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,                         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,
                             "Monitor::_dispatch: entering run() for "                                  "Entering HTTPConnection::run() for "
                                 "indx = %d, queueId = %d, q = %p",                                 "indx = %d, queueId = %d, q = %p",
                             dst->_entry_index,                                  indx, entries[indx].queueId, q));
                                 dst->_monitor->  
                                     _entries[dst->_entry_index].queueId,  
                             dst));  
  
                         try                         try
                         {                         {
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Line 571 
                         }                         }
                         catch (...)                         catch (...)
                         {                         {
                             PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,                                  PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL2,
                                 "Monitor::_dispatch: exception received");                                      "Caught exception from "
                         }                                      "HTTPConnection::run()");
                         PEG_TRACE((TRC_HTTP, Tracer::LEVEL4,  
                             "Monitor::_dispatch: exited run() for index %d",  
                             dst->_entry_index));  
                         }                         }
                               PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,
                                   "Exited HTTPConnection::run()");
                     }                     }
                     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];  
                         Sint32 amt =  
                             Socket::read(entries[indx].socket,&buffer, 2);  
  
                         entries[indx]._status = _MonitorEntry::IDLE;                      }
                       else if (entries[indx].type == MonitorEntry::TYPE_INTERNAL)
                       {
                           char buffer;
                           Sint32 ignored =
                               Socket::read(entries[indx].socket, &buffer, 1);
                     }                     }
                     else                     else
                     {                     {
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                         events |= SocketMessage::READ;                         events |= SocketMessage::READ;
                         Message* msg = new SocketMessage(                         Message* msg = new SocketMessage(
                             entries[indx].socket, events);                             entries[indx].socket, events);
                         entries[indx]._status = _MonitorEntry::BUSY;                          entries[indx].status = MonitorEntry::STATUS_BUSY;
                         _entry_mut.unlock();                          _entriesMutex.unlock();
                         q->enqueue(msg);                         q->enqueue(msg);
                         _entry_mut.lock();                          _entriesMutex.lock();
  
                         // After enqueue a message and the autoEntryMutex has                         // After enqueue a message and the autoEntryMutex has
                         // been released and locked again, the array of                         // been released and locked again, the array of
                         // entries can be changed. The ArrayIterator has be                          // entries can be changed. The ArrayIterator has to be
                         // reset with the original _entries                          // reset with the latest _entries.
                         entries.reset(_entries);                         entries.reset(_entries);
                         entries[indx]._status = _MonitorEntry::IDLE;                          entries[indx].status = MonitorEntry::STATUS_IDLE;
                     }                     }
                 }                 }
                 catch (...)                 catch (...)
Line 638 
Line 617 
             // else check for accept pending (ie. SSL handshake pending) or             // else check for accept pending (ie. SSL handshake pending) or
             // idle connection timeouts for sockets from which we did not             // idle connection timeouts for sockets from which we did not
             // receive data.             // receive data.
             else if ((entries[indx]._status.get() == _MonitorEntry::IDLE) &&              else if ((entries[indx].status == MonitorEntry::STATUS_IDLE) &&
                 entries[indx]._type == Monitor::CONNECTION)                  entries[indx].type == MonitorEntry::TYPE_CONNECTION)
   
             {             {
                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);
                 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);                 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);
Line 652 
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     // to check if there are any pending SSL handshakes that have timed out.     // to check if there are any pending SSL handshakes that have timed out.
     else     else
     {     {
         for (int indx = 0; indx < (int)entries.size(); indx++)          for (Uint32 indx = 0; indx < entries.size(); indx++)
         {         {
             if ((entries[indx]._status.get() == _MonitorEntry::IDLE) &&              if ((entries[indx].status == MonitorEntry::STATUS_IDLE) &&
                 entries[indx]._type == Monitor::CONNECTION)                  entries[indx].type == MonitorEntry::TYPE_CONNECTION)
             {             {
                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);                 MessageQueue *q = MessageQueue::lookup(entries[indx].queueId);
                 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);                 HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q);
Line 689 
Line 669 
     SocketHandle socket,     SocketHandle socket,
     Uint32 events,     Uint32 events,
     Uint32 queueId,     Uint32 queueId,
     int type)      Uint32 type)
 { {
     PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages");     PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages");
     AutoMutex autoMut(_entry_mut);      AutoMutex autoMut(_entriesMutex);
   
     // Check to see if we need to dynamically grow the _entries array     // Check to see if we need to dynamically grow the _entries array
     // We always want the _entries array to 2 bigger than the      // We always want the _entries array to be 2 bigger than the
     // current connections requested     // current connections requested
     _solicitSocketCount++;  // bump the count     _solicitSocketCount++;  // bump the count
     int size = (int)_entries.size();  
     if ((int)_solicitSocketCount >= (size-1))      for (Uint32 i = _entries.size(); i < _solicitSocketCount + 1; i++)
     {  
         for (int i = 0; i < ((int)_solicitSocketCount - (size-1)); i++)  
         {         {
             _MonitorEntry entry(0, 0, 0);          _entries.append(MonitorEntry());
             _entries.append(entry);  
         }  
     }     }
  
     int index;      for (Uint32 index = 1; index < _entries.size(); index++)
     for (index = 1; index < (int)_entries.size(); index++)  
     {     {
         try         try
         {         {
             if (_entries[index]._status.get() == _MonitorEntry::EMPTY)              if (_entries[index].status == MonitorEntry::STATUS_EMPTY)
             {             {
                 _entries[index].socket = socket;                 _entries[index].socket = socket;
                 _entries[index].queueId  = queueId;                 _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;                  return (int)index;
             }             }
         }         }
         catch (...)         catch (...)
Line 735 
Line 711 
 void Monitor::unsolicitSocketMessages(SocketHandle socket) void Monitor::unsolicitSocketMessages(SocketHandle socket)
 { {
     PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages");     PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages");
     AutoMutex autoMut(_entry_mut);      AutoMutex autoMut(_entriesMutex);
  
     /*     /*
         Start at index = 1 because _entries[0] is the tickle entry which         Start at index = 1 because _entries[0] is the tickle entry which
         never needs to be EMPTY;          never needs to be reset to EMPTY;
     */     */
     unsigned int index;      for (Uint32 index = 1; index < _entries.size(); index++)
     for (index = 1; index < _entries.size(); index++)  
     {     {
         if (_entries[index].socket == socket)         if (_entries[index].socket == socket)
         {         {
             _entries[index]._status = _MonitorEntry::EMPTY;              _entries[index].reset();
             _entries[index].socket = PEGASUS_INVALID_SOCKET;  
             _solicitSocketCount--;             _solicitSocketCount--;
             break;             break;
         }         }
Line 760 
Line 734 
         first NON EMPTY.  This prevents the positions, of the NON EMPTY         first NON EMPTY.  This prevents the positions, of the NON EMPTY
         entries, from being changed.         entries, from being changed.
     */     */
     index = _entries.size() - 1;      for (Uint32 index = _entries.size() - 1;
     while (_entries[index]._status.get() == _MonitorEntry::EMPTY)           (_entries[index].status == MonitorEntry::STATUS_EMPTY) &&
                (index >= MAX_NUMBER_OF_MONITOR_ENTRIES);
            index--)
     {     {
         if (_entries.size() > MAX_NUMBER_OF_MONITOR_ENTRIES)  
                 _entries.remove(index);                 _entries.remove(index);
         index--;  
     }  
     PEG_METHOD_EXIT();  
 }  
   
 // Note: this is no longer called with PEP 183.  
 ThreadReturnType PEGASUS_THREAD_CDECL Monitor::_dispatch(void* parm)  
 {  
     HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm);  
     PEG_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 (...)  
     {  
         PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4,  
             "Monitor::_dispatch: exception received");  
     }  
     PEG_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      PEG_METHOD_EXIT();
     // 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 PEGASUS_NAMESPACE_END

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  Added in v.1.130
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