version 1.61, 2003/10/13 14:21:09
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version 1.70, 2004/01/30 15:41:28
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//%///////////////////////////////////////////////////////////////////////////// |
//%2003//////////////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM, |
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Development |
// The Open Group, Tivoli Systems |
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems. |
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// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.; |
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// IBM Corp.; EMC Corporation, The Open Group. |
// | // |
// Permission is hereby granted, free of charge, to any person obtaining a copy | // Permission is hereby granted, free of charge, to any person obtaining a copy |
// of this software and associated documentation files (the "Software"), to | // of this software and associated documentation files (the "Software"), to |
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#include "Socket.h" | #include "Socket.h" |
#include <Pegasus/Common/Tracer.h> | #include <Pegasus/Common/Tracer.h> |
#include <Pegasus/Common/HTTPConnection.h> | #include <Pegasus/Common/HTTPConnection.h> |
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#include <Pegasus/Common/MessageQueueService.h> |
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#ifdef PEGASUS_OS_TYPE_WINDOWS | #ifdef PEGASUS_OS_TYPE_WINDOWS |
# if defined(FD_SETSIZE) && FD_SETSIZE != 1024 | # if defined(FD_SETSIZE) && FD_SETSIZE != 1024 |
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_MonitorEntry entry(0, 0, 0); | _MonitorEntry entry(0, 0, 0); |
_entries.append(entry); | _entries.append(entry); |
} | } |
if( _async == true ) |
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{ |
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_thread_pool = new ThreadPool(0, |
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"Monitor", |
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0, |
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0, |
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create_time, |
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destroy_time, |
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deadlock_time); |
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} |
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else |
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_thread_pool = 0; |
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} | } |
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Monitor::~Monitor() | Monitor::~Monitor() |
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Socket::uninitializeInterface(); | Socket::uninitializeInterface(); |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
"returning from monitor destructor"); | "returning from monitor destructor"); |
if(_async == true) |
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delete _thread_pool; |
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} |
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int Monitor::kill_idle_threads() |
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{ |
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static struct timeval now, last; |
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gettimeofday(&now, NULL); |
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int dead_threads = 0; |
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if( now.tv_sec - last.tv_sec > 120 ) |
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{ |
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gettimeofday(&last, NULL); |
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try |
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{ |
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dead_threads = _thread_pool->kill_dead_threads(); |
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} |
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catch(IPCException& ) |
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{ |
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} | } |
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} |
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return dead_threads; |
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} |
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Boolean Monitor::run(Uint32 milliseconds) | Boolean Monitor::run(Uint32 milliseconds) |
{ | { |
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_stopConnections = 0; | _stopConnections = 0; |
} | } |
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for( int indx = 0; indx < (int)_entries.size(); indx++) |
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{ |
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if ((_entries[indx]._status.value() == _MonitorEntry::DYING) && |
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(_entries[indx]._type == Monitor::CONNECTION)) |
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{ |
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MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); |
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PEGASUS_ASSERT(q != 0); |
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MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner(); |
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Message* message= new CloseConnectionMessage(_entries[indx].socket); |
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message->dest = o.getQueueId(); |
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// HTTPAcceptor is responsible for closing the connection. |
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// The lock is released to allow HTTPAcceptor to call |
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// unsolicitSocketMessages to free the entry. |
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// Once HTTPAcceptor completes processing of the close |
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// connection, the lock is re-requested and processing of |
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// the for loop continues. This is safe with the current |
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// implementation of the _entries object. Note that the |
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// loop condition accesses the _entries.size() on each |
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// iteration, so that a change in size while the mutex is |
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// unlocked will not result in an ArrayIndexOutOfBounds |
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// exception. |
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_entry_mut.unlock(); |
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o.enqueue(message); |
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_entry_mut.lock(pegasus_thread_self()); |
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} |
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} |
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Uint32 _idleEntries = 0; | Uint32 _idleEntries = 0; |
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for( int indx = 0; indx < (int)_entries.size(); indx++) | for( int indx = 0; indx < (int)_entries.size(); indx++) |
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} | } |
} | } |
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// Fixed in monitor_2 but added because Monitor is still the default monitor. |
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// When _idleEntries is 0 don't immediately return, otherwise this loops out of control |
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// kicking off kill idle thread threads. E.g. There is nothing to select on when the cimserver |
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// is shutting down. |
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if( _idleEntries == 0 ) |
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{ |
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Thread::sleep( milliseconds ); |
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_entry_mut.unlock(); |
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return false; |
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} |
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_entry_mut.unlock(); | _entry_mut.unlock(); |
int events = select(FD_SETSIZE, &fdread, NULL, NULL, &tv); | int events = select(FD_SETSIZE, &fdread, NULL, NULL, &tv); |
_entry_mut.lock(pegasus_thread_self()); | _entry_mut.lock(pegasus_thread_self()); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
"_entries[indx].type for indx = %d is Monitor::CONNECTION", indx); | "_entries[indx].type for indx = %d is Monitor::CONNECTION", indx); |
static_cast<HTTPConnection *>(q)->_entry_index = indx; | static_cast<HTTPConnection *>(q)->_entry_index = indx; |
if(static_cast<HTTPConnection *>(q)->_dying.value() > 0 ) |
_entries[indx]._status = _MonitorEntry::BUSY; |
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// If allocate_and_awaken failure, retry on next iteration |
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if (!MessageQueueService::get_thread_pool()->allocate_and_awaken( |
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(void *)q, _dispatch)) |
{ | { |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
"Monitor::run processing dying value > 0 for indx = %d, connection being closed.", |
"Monitor::run: Insufficient resources to process request."); |
indx); |
_entries[indx]._status = _MonitorEntry::IDLE; |
_entries[indx]._status = _MonitorEntry::DYING; |
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MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner(); |
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Message* message= new CloseConnectionMessage(_entries[indx].socket); |
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message->dest = o.getQueueId(); |
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_entry_mut.unlock(); | _entry_mut.unlock(); |
o.enqueue(message); |
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return true; | return true; |
} | } |
_entries[indx]._status = _MonitorEntry::BUSY; |
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_thread_pool->allocate_and_awaken((void *)q, _dispatch); |
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} | } |
else | else |
{ | { |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
"Monitor::_dispatch: exited run() for index %d", dst->_entry_index); | "Monitor::_dispatch: exited run() for index %d", dst->_entry_index); |
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dst->_monitor->_entry_mut.lock(pegasus_thread_self()); |
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// It shouldn't be necessary to set status = _MonitorEntry::IDLE |
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// if the connection is being closed. However, the current logic |
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// in Monitor::run requires this value to be set for the close |
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// to be processed. |
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PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY); | PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY); |
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
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// Once the HTTPConnection thread has set the status value to either |
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// Monitor::DYING or Monitor::IDLE, it has returned control of the connection |
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// to the Monitor. It is no longer permissible to access the connection |
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// or the entry in the _entries table. |
if (dst->_connectionClosePending) | if (dst->_connectionClosePending) |
{ | { |
dst->_dying = 1; |
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING; |
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} |
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else |
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{ |
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dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
} | } |
dst->_monitor->_entry_mut.unlock(); |
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return 0; | return 0; |
} | } |
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} | } |
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int monitor_2::solicitSocketMessages( |
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Sint32 socket, |
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Uint32 events, |
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Uint32 queueId, |
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int type) |
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{ |
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PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages"); |
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_entry_mut.lock(pegasus_thread_self()); |
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for(int index = 0; index < (int)_entries.size(); index++) |
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{ |
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try |
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{ |
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if(_entries[index]._status.value() == monitor_2_entry::EMPTY) |
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{ |
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_entries[index].socket = socket; |
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//_entries[index].queueId = queueId; |
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//_entries[index]._type = type; |
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_entries[index]._status = _MonitorEntry::IDLE; |
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_entry_mut.unlock(); |
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return index; |
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} |
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} |
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catch(...) |
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{ |
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} |
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} |
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_entry_mut.unlock(); |
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PEG_METHOD_EXIT(); |
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return -1; |
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} |
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void monitor_2::unsolicitSocketMessages(Sint32 socket) |
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{ |
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PEG_METHOD_ENTER(TRC_HTTP, "monitor_2::unsolicitSocketMessages"); |
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_entry2_mut.lock(pegasus_thread_self()); |
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for(int index = 0; index < (int)_entries2.size(); index++) |
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{ |
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if(_entries2[index].socket == socket) |
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{ |
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_entries2[index]._status = monitor_2_entry::EMPTY; |
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_entries2[index].socket = -1; |
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break; |
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} |
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} |
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_entry2_mut.unlock(); |
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PEG_METHOD_EXIT(); |
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} |
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void* monitor_2::set_session_dispatch(void (*dp)(monitor_2_entry*)) | void* monitor_2::set_session_dispatch(void (*dp)(monitor_2_entry*)) |
{ | { |
void* old = (void *)_session_dispatch; | void* old = (void *)_session_dispatch; |
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static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); | static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); |
entry->get_sock().disableBlocking(); | entry->get_sock().disableBlocking(); |
pegasus_socket connected = entry->get_sock().accept(&peer, &peer_size); | pegasus_socket connected = entry->get_sock().accept(&peer, &peer_size); |
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#ifdef PEGASUS_OS_TYPE_WINDOWS |
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if((Sint32)connected == SOCKET_ERROR) |
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#else |
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if((Sint32)connected == -1 ) |
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#endif |
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{ |
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delete entry; |
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break; |
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} |
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entry->get_sock().enableBlocking(); | entry->get_sock().enableBlocking(); |
monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch()); | monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch()); |
if(temp && _accept_dispatch != 0) | if(temp && _accept_dispatch != 0) |