version 1.7, 2002/05/15 17:15:34
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version 1.94.8.2, 2005/10/21 17:34:38
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//%///////////////////////////////////////////////////////////////////////////// |
//%2005//////////////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001 The Open group, BMC Software, Tivoli Systems, IBM |
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development |
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// 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. |
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// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; |
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// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. |
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// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
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// EMC Corporation; VERITAS Software 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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// | // |
// Author: Mike Brasher (mbrasher@bmc.com) | // Author: Mike Brasher (mbrasher@bmc.com) |
// | // |
// Modified By: |
// Modified By: Mike Day (monitor_2) mdday@us.ibm.com |
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// Amit K Arora (Bug#1153) amita@in.ibm.com |
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// Alagaraja Ramasubramanian (alags_raj@in.ibm.com) for Bug#1090 |
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// Sushma Fernandes (sushma@hp.com) for Bug#2057 |
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// Josephine Eskaline Joyce (jojustin@in.ibm.com) for PEP#101 |
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// Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com) |
// | // |
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
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#include <Pegasus/Common/Config.h> | #include <Pegasus/Common/Config.h> |
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#include <cstring> | #include <cstring> |
#include "Monitor.h" | #include "Monitor.h" |
#include "MessageQueue.h" | #include "MessageQueue.h" |
#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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#include <Pegasus/Common/Exception.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 |
# error "FD_SETSIZE was not set to 1024 prior to the last inclusion \ | # 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 \ | of <winsock.h>. It may have been indirectly included (e.g., by including \ |
<windows.h>). Find the inclusion of that header which is visible to this \ |
<windows.h>). Finthe inclusion of that header which is visible to this \ |
compilation unit and #define FD_SETZIE to 1024 prior to that inclusion; \ | 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 \ | 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." | CIMOM. PLEASE DO NOT SUPPRESS THIS WARNING; PLEASE FIX THE PROBLEM." |
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# include <netinet/in.h> | # include <netinet/in.h> |
# include <netdb.h> | # include <netdb.h> |
# include <arpa/inet.h> | # include <arpa/inet.h> |
# include <unistd.h> |
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#endif | #endif |
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PEGASUS_USING_STD; | PEGASUS_USING_STD; |
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PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
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//////////////////////////////////////////////////////////////////////////////// |
// Define a platform-neutral socket length type |
// |
#if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) || defined(PEGASUS_OS_VMS) |
// MonitorRep |
typedef size_t PEGASUS_SOCKLEN_T; |
// |
#elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_OS_LINUX) || (defined(PEGASUS_OS_SOLARIS) && !defined(SUNOS_5_6)) |
//////////////////////////////////////////////////////////////////////////////// |
typedef socklen_t PEGASUS_SOCKLEN_T; |
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#else |
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typedef int PEGASUS_SOCKLEN_T; |
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#endif |
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struct MonitorRep |
static AtomicInt _connections(0); |
{ |
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fd_set rd_fd_set; |
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fd_set wr_fd_set; |
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fd_set ex_fd_set; |
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fd_set active_rd_fd_set; |
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fd_set active_wr_fd_set; |
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fd_set active_ex_fd_set; |
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}; |
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//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
// | // |
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// | // |
//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
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#define MAX_NUMBER_OF_MONITOR_ENTRIES 32 |
Monitor::Monitor() | Monitor::Monitor() |
: _module_handle(0), _controller(0), _async(false) |
: _stopConnections(0), |
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_stopConnectionsSem(0), |
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_solicitSocketCount(0), |
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_tickle_client_socket(-1), |
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_tickle_server_socket(-1), |
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_tickle_peer_socket(-1) |
{ | { |
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int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
Socket::initializeInterface(); | Socket::initializeInterface(); |
_rep = new MonitorRep; |
_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
FD_ZERO(&_rep->rd_fd_set); |
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FD_ZERO(&_rep->wr_fd_set); |
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FD_ZERO(&_rep->ex_fd_set); |
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FD_ZERO(&_rep->active_rd_fd_set); |
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FD_ZERO(&_rep->active_wr_fd_set); |
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FD_ZERO(&_rep->active_ex_fd_set); |
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} |
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Monitor::~Monitor() |
// setup the tickler |
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initializeTickler(); |
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// Start the count at 1 because initilizeTickler() |
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// has added an entry in the first position of the |
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// _entries array |
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for( int i = 1; i < numberOfMonitorEntriesToAllocate; i++ ) |
{ | { |
delete _rep; |
_MonitorEntry entry(0, 0, 0); |
Socket::uninitializeInterface(); |
_entries.append(entry); |
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} |
} | } |
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Monitor::~Monitor() |
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//<<< Tue May 14 20:38:26 2002 mdd >>> |
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// register with module controller |
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// when it is time to enqueue the message, |
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// use an async_thread_exec call to |
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// isolate the entire if(events) { enqueue -> fd_clear } block |
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// let the thread pool grow and shrink according to load. |
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Boolean Monitor::run(Uint32 milliseconds) |
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{ | { |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface"); |
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try{ |
// register the monitor as a module to gain access to the cimserver's thread pool |
if(_tickle_peer_socket >= 0) |
// <<< Wed May 15 09:52:16 2002 mdd >>> |
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while(_module_handle == NULL) |
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{ | { |
try |
Socket::close(_tickle_peer_socket); |
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} |
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if(_tickle_client_socket >= 0) |
{ | { |
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Socket::close(_tickle_client_socket); |
_controller = &(ModuleController::register_module(PEGASUS_QUEUENAME_CONTROLSERVICE, |
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PEGASUS_MODULENAME_MONITOR, |
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(void *)this, |
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0, |
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0, |
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0, |
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&_module_handle)); |
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} | } |
catch(AlreadyExists & ) |
if(_tickle_server_socket >= 0) |
{ | { |
break; |
Socket::close(_tickle_server_socket); |
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} |
} | } |
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catch(...) |
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{ |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Failed to close tickle sockets"); |
} | } |
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Socket::uninitializeInterface(); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"returning from monitor destructor"); |
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} |
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#ifdef PEGASUS_OS_TYPE_WINDOWS |
void Monitor::initializeTickler(){ |
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/* |
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NOTE: On any errors trying to |
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setup out tickle connection, |
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throw an exception/end the server |
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*/ |
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/* setup the tickle server/listener */ |
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// get a socket for the server side |
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if((_tickle_server_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){ |
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//handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_CREATE", |
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"Received error number $0 while creating the internal socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
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} |
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// Windows select() has a strange little bug. It returns immediately if |
// initialize the address |
// there are no descriptors in the set even if the timeout is non-zero. |
memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr)); |
// To work around this, we call Sleep() for now: |
#ifdef PEGASUS_OS_ZOS |
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_tickle_server_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
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#else |
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#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(37) |
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#endif |
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_tickle_server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
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#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(0) |
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#endif |
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#endif |
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_tickle_server_addr.sin_family = PF_INET; |
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_tickle_server_addr.sin_port = 0; |
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if (_entries.size() == 0) |
PEGASUS_SOCKLEN_T _addr_size = sizeof(_tickle_server_addr); |
Sleep(milliseconds); |
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// bind server side to socket |
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if((::bind(_tickle_server_socket, |
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reinterpret_cast<struct sockaddr*>(&_tickle_server_addr), |
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sizeof(_tickle_server_addr))) < 0){ |
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// handle error |
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#ifdef PEGASUS_OS_ZOS |
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MessageLoaderParms parms("Common.Monitor.TICKLE_BIND_LONG", |
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"Received error:$0 while binding the internal socket.",strerror(errno)); |
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#else |
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MessageLoaderParms parms("Common.Monitor.TICKLE_BIND", |
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"Received error number $0 while binding the internal socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
#endif | #endif |
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#endif |
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throw Exception(parms); |
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} |
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// Check for events on the selected file descriptors. Only do this if |
// tell the kernel we are a server |
// there were no undispatched events from last time. |
if((::listen(_tickle_server_socket,3)) < 0){ |
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// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_LISTEN", |
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"Received error number $0 while listening to the internal socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
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} |
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static int count = 0; |
// make sure we have the correct socket for our server |
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int sock = ::getsockname(_tickle_server_socket, |
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reinterpret_cast<struct sockaddr*>(&_tickle_server_addr), |
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&_addr_size); |
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if(sock < 0){ |
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// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_SOCKNAME", |
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"Received error number $0 while getting the internal socket name.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
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} |
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if (count == 0) |
/* set up the tickle client/connector */ |
{ |
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memcpy(&_rep->active_rd_fd_set, &_rep->rd_fd_set, sizeof(fd_set)); |
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memcpy(&_rep->active_wr_fd_set, &_rep->wr_fd_set, sizeof(fd_set)); |
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memcpy(&_rep->active_ex_fd_set, &_rep->ex_fd_set, sizeof(fd_set)); |
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const Uint32 SECONDS = milliseconds / 1000; |
// get a socket for our tickle client |
const Uint32 MICROSECONDS = (milliseconds % 1000) * 1000; |
if((_tickle_client_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){ |
struct timeval tv = { SECONDS, MICROSECONDS }; |
// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CREATE", |
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"Received error number $0 while creating the internal client socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
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} |
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count = select( |
// setup the address of the client |
FD_SETSIZE, |
memset(&_tickle_client_addr, 0, sizeof(_tickle_client_addr)); |
&_rep->active_rd_fd_set, |
#ifdef PEGASUS_OS_ZOS |
&_rep->active_wr_fd_set, |
_tickle_client_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
&_rep->active_ex_fd_set, |
#else |
&tv); |
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(37) |
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#endif |
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_tickle_client_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
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#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(0) |
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#endif |
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#endif |
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_tickle_client_addr.sin_family = PF_INET; |
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_tickle_client_addr.sin_port = 0; |
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if (count == 0) |
// bind socket to client side |
return false; |
if((::bind(_tickle_client_socket, |
#ifdef PEGASUS_OS_TYPE_WINDOWS |
reinterpret_cast<struct sockaddr*>(&_tickle_client_addr), |
else if (count == SOCKET_ERROR) |
sizeof(_tickle_client_addr))) < 0){ |
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// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_BIND", |
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"Received error number $0 while binding the internal client socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
#else | #else |
else if (count == -1) |
WSAGetLastError()); |
#endif | #endif |
{ |
throw Exception(parms); |
count = 0; |
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return false; |
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} | } |
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// connect to server side |
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if((::connect(_tickle_client_socket, |
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reinterpret_cast<struct sockaddr*>(&_tickle_server_addr), |
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sizeof(_tickle_server_addr))) < 0){ |
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// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_CLIENT_CONNECT", |
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"Received error number $0 while connecting the internal client socket.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
} | } |
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for (Uint32 i = 0, n = _entries.size(); i < n; i++) |
/* set up the slave connection */ |
{ |
memset(&_tickle_peer_addr, 0, sizeof(_tickle_peer_addr)); |
Sint32 socket = _entries[i].socket; |
PEGASUS_SOCKLEN_T peer_size = sizeof(_tickle_peer_addr); |
Uint32 events = 0; |
pegasus_sleep(1); |
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// this call may fail, we will try a max of 20 times to establish this peer connection |
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if((_tickle_peer_socket = ::accept(_tickle_server_socket, |
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reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr), |
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&peer_size)) < 0){ |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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// Only retry on non-windows platforms. |
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if(_tickle_peer_socket == -1 && errno == EAGAIN) |
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{ |
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int retries = 0; |
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do |
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{ |
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pegasus_sleep(1); |
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_tickle_peer_socket = ::accept(_tickle_server_socket, |
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reinterpret_cast<struct sockaddr*>(&_tickle_peer_addr), |
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&peer_size); |
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retries++; |
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} while(_tickle_peer_socket == -1 && errno == EAGAIN && retries < 20); |
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} |
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#endif |
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} |
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if(_tickle_peer_socket == -1){ |
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// handle error |
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MessageLoaderParms parms("Common.Monitor.TICKLE_ACCEPT", |
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"Received error number $0 while accepting the internal socket connection.", |
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#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
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errno); |
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#else |
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WSAGetLastError()); |
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#endif |
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throw Exception(parms); |
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} |
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// add the tickler to the list of entries to be monitored and set to IDLE because Monitor only |
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// checks entries with IDLE state for events |
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_MonitorEntry entry(_tickle_peer_socket, 1, INTERNAL); |
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entry._status = _MonitorEntry::IDLE; |
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_entries.append(entry); |
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} |
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if (FD_ISSET(socket, &_rep->active_rd_fd_set)) |
void Monitor::tickle(void) |
events |= SocketMessage::READ; |
{ |
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static char _buffer[] = |
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{ |
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'0','0' |
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}; |
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if (FD_ISSET(socket, &_rep->active_wr_fd_set)) |
AutoMutex autoMutex(_tickle_mutex); |
events |= SocketMessage::WRITE; |
Socket::disableBlocking(_tickle_client_socket); |
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Socket::write(_tickle_client_socket,&_buffer, 2); |
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Socket::enableBlocking(_tickle_client_socket); |
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} |
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if (FD_ISSET(socket, &_rep->active_ex_fd_set)) |
void Monitor::setState( Uint32 index, _MonitorEntry::entry_status status ) |
events |= SocketMessage::EXCEPTION; |
{ |
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// Set the state to requested state |
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_entries[index]._status = status; |
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} |
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if (events) |
Boolean Monitor::run(Uint32 milliseconds) |
{ | { |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::run - Socket Event Detected events = %d", events); |
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Boolean handled_events = false; |
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int i = 0; |
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MessageQueue* queue = MessageQueue::lookup(_entries[i].queueId); |
struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; |
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if (!_async) |
fd_set fdread; |
{ |
FD_ZERO(&fdread); |
if( ! queue ) |
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unsolicitSocketMessages(_entries[i].queueId); |
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Message* message = new SocketMessage(socket, events); |
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queue->enqueue(message); |
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if (events & SocketMessage::WRITE) |
AutoMutex autoEntryMutex(_entry_mut); |
{ |
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FD_CLR(socket, &_rep->active_wr_fd_set); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::run FD_CLR WRITE"); |
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} |
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if (events & SocketMessage::EXCEPTION) |
// Check the stopConnections flag. If set, clear the Acceptor monitor entries |
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if (_stopConnections.get() == 1) |
{ | { |
FD_CLR(socket, &_rep->active_ex_fd_set); |
for ( int indx = 0; indx < (int)_entries.size(); indx++) |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::run FD_CLR EXECEPTION"); |
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} |
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if (events & SocketMessage::READ) |
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{ | { |
FD_CLR(socket, &_rep->active_rd_fd_set); |
if (_entries[indx]._type == Monitor::ACCEPTOR) |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
{ |
"Monitor::run FD_CLR READ"); |
if ( _entries[indx]._status.get() != _MonitorEntry::EMPTY) |
} |
{ |
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if ( _entries[indx]._status.get() == _MonitorEntry::IDLE || |
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_entries[indx]._status.get() == _MonitorEntry::DYING ) |
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{ |
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// remove the entry |
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_entries[indx]._status = _MonitorEntry::EMPTY; |
} | } |
else | else |
{ | { |
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// set status to DYING |
monitor_dispatch *parms = |
_entries[indx]._status = _MonitorEntry::DYING; |
new monitor_dispatch(this, queue, i, socket, events); |
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_controller->async_thread_exec(*_module_handle, _dispatch, (void *)parms); |
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} | } |
count--; |
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return true; |
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} | } |
} | } |
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} |
return false; |
_stopConnections = 0; |
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_stopConnectionsSem.signal(); |
} | } |
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Boolean Monitor::solicitSocketMessages( |
for( int indx = 0; indx < (int)_entries.size(); indx++) |
Sint32 socket, |
{ |
Uint32 events, |
const _MonitorEntry &entry = _entries[indx]; |
Uint32 queueId) |
if ((entry._status.get() == _MonitorEntry::DYING) && |
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(entry._type == Monitor::CONNECTION)) |
{ | { |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solictSocketMessage"); |
MessageQueue *q = MessageQueue::lookup(entry.queueId); |
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PEGASUS_ASSERT(q != 0); |
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HTTPConnection &h = *static_cast<HTTPConnection *>(q); |
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// See whether a handler is already registered for this one: |
if (h._connectionClosePending == false) |
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continue; |
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Uint32 pos = _findEntry(socket); |
// NOTE: do not attempt to delete while there are pending responses |
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// coming thru. The last response to come thru after a |
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// _connectionClosePending will reset _responsePending to false |
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// and then cause the monitor to rerun this code and clean up. |
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// (see HTTPConnection.cpp) |
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if (pos != PEGASUS_NOT_FOUND) |
if (h._responsePending == true) |
{ | { |
PEG_METHOD_EXIT(); |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "Monitor::run - " |
return false; |
"Ignoring connection delete request because " |
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"responses are still pending. " |
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"connection=0x%p, socket=%d\n", |
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(void *)&h, h.getSocket()); |
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continue; |
} | } |
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h._connectionClosePending = false; |
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MessageQueue &o = h.get_owner(); |
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Message* message= new CloseConnectionMessage(entry.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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// Set the events: |
autoEntryMutex.unlock(); |
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o.enqueue(message); |
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autoEntryMutex.lock(); |
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} |
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} |
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if (events & SocketMessage::READ) |
Uint32 _idleEntries = 0; |
FD_SET(socket, &_rep->rd_fd_set); |
|
| |
if (events & SocketMessage::WRITE) |
/* |
FD_SET(socket, &_rep->wr_fd_set); |
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. |
|
*/ |
|
int maxSocketCurrentPass = 0; |
|
for( int indx = 0; indx < (int)_entries.size(); indx++) |
|
{ |
|
if(maxSocketCurrentPass < _entries[indx].socket) |
|
maxSocketCurrentPass = _entries[indx].socket; |
| |
if (events & SocketMessage::EXCEPTION) |
if(_entries[indx]._status.get() == _MonitorEntry::IDLE) |
FD_SET(socket, &_rep->ex_fd_set); |
{ |
|
_idleEntries++; |
|
FD_SET(_entries[indx].socket, &fdread); |
|
} |
|
} |
| |
// Add the entry to the list: |
/* |
|
Add 1 then assign maxSocket accordingly. We add 1 to account for |
|
descriptors starting at 0. |
|
*/ |
|
maxSocketCurrentPass++; |
| |
// _MonitorEntry entry = { socket, queueId }; |
autoEntryMutex.unlock(); |
_MonitorEntry entry(socket, queueId); |
int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv); |
|
autoEntryMutex.lock(); |
| |
_entries.append(entry); |
#ifdef PEGASUS_OS_TYPE_WINDOWS |
|
if(events == SOCKET_ERROR) |
|
#else |
|
if(events == -1) |
|
#endif |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run - errorno = %d has occurred on select.", errno); |
|
// 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. |
| |
// Success! |
PEGASUS_ASSERT(errno != EBADF); |
ModuleController* controlService = |
|
new ModuleController(PEGASUS_QUEUENAME_CONTROLSERVICE); |
|
PEG_METHOD_EXIT(); |
|
return true; |
|
} | } |
|
else if (events) |
Boolean Monitor::unsolicitSocketMessages(Sint32 socket) |
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run select event received events = %d, monitoring %d idle entries", |
|
events, _idleEntries); |
|
for( int indx = 0; indx < (int)_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.get() == _MonitorEntry::IDLE) && |
|
(FD_ISSET(_entries[indx].socket, &fdread))) |
{ | { |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessage"); |
MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run indx = %d, queueId = %d, q = %p", |
|
indx, _entries[indx].queueId, q); |
|
PEGASUS_ASSERT(q !=0); |
| |
// Look for the given entry and remove it: |
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; |
| |
for (Uint32 i = 0, n = _entries.size(); i < n; i++) |
// Do not update the entry just yet. The entry gets updated once |
|
// the request has been read. |
|
//_entries[indx]._status = _MonitorEntry::BUSY; |
|
|
|
// If allocate_and_awaken failure, retry on next iteration |
|
/* Removed for PEP 183. |
|
if (!MessageQueueService::get_thread_pool()->allocate_and_awaken( |
|
(void *)q, _dispatch)) |
|
{ |
|
Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
|
"Monitor::run: Insufficient resources to process request."); |
|
_entries[indx]._status = _MonitorEntry::IDLE; |
|
return true; |
|
} |
|
*/ |
|
// Added for PEP 183 |
|
HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q); |
|
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 |
{ | { |
if (_entries[i].socket == socket) |
dst->run(1); |
|
} |
|
catch (...) |
{ | { |
Sint32 socket = _entries[i].socket; |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
FD_CLR(socket, &_rep->rd_fd_set); |
"Monitor::_dispatch: exception received"); |
FD_CLR(socket, &_rep->wr_fd_set); |
} |
FD_CLR(socket, &_rep->ex_fd_set); |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
_entries.remove(i); |
"Monitor::_dispatch: exited run() for index %d", dst->_entry_index); |
PEG_METHOD_EXIT(); |
|
|
// It is possible the entry status may not be set to busy. |
|
// The following will fail in that case. |
|
// 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. |
|
|
|
// The following is not relevant as the worker thread or the |
|
// reader thread will update the status of the entry. |
|
//if (dst->_connectionClosePending) |
|
//{ |
|
// 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 |
|
|
|
_entries[indx]._status.get() == _MonitorEntry::BUSY; |
|
static char buffer[2]; |
|
Socket::disableBlocking(_entries[indx].socket); |
|
Sint32 amt = Socket::read(_entries[indx].socket,&buffer, 2); |
|
Socket::enableBlocking(_entries[indx].socket); |
|
_entries[indx]._status.get() == _MonitorEntry::IDLE; |
|
} |
|
else |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Non-connection entry, indx = %d, has been received.", indx); |
|
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(); |
|
_entries[indx]._status = _MonitorEntry::IDLE; |
|
|
return true; | return true; |
} | } |
} | } |
|
catch(...) |
|
{ |
|
} |
|
handled_events = true; |
|
} |
|
} |
|
} |
| |
PEG_METHOD_EXIT(); |
return(handled_events); |
return false; |
|
} | } |
| |
Uint32 Monitor::_findEntry(Sint32 socket) const |
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) |
{ | { |
for (Uint32 i = 0, n = _entries.size(); i < n; i++) |
// 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. |
|
try |
|
{ |
|
_stopConnectionsSem.time_wait(10000); |
|
} |
|
catch (TimeOut &) |
{ | { |
if (_entries[i].socket == socket) |
// The monitor is probably busy processng a very long request, and is |
return i; |
// not accepting connections. Let the caller unbind the ports. |
|
} |
} | } |
| |
return PEG_NOT_FOUND; |
PEG_METHOD_EXIT(); |
} | } |
| |
| |
PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm) |
int Monitor::solicitSocketMessages( |
|
Sint32 socket, |
|
Uint32 events, |
|
Uint32 queueId, |
|
int type) |
{ | { |
|
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages"); |
|
AutoMutex autoMut(_entry_mut); |
|
// Check to see if we need to dynamically grow the _entries array |
|
// We always want the _entries array to 2 bigger than the |
|
// current connections requested |
|
_solicitSocketCount++; // bump the count |
|
int size = (int)_entries.size(); |
|
if((int)_solicitSocketCount >= (size-1)){ |
|
for(int i = 0; i < ((int)_solicitSocketCount - (size-1)); i++){ |
|
_MonitorEntry entry(0, 0, 0); |
|
_entries.append(entry); |
|
} |
|
} |
| |
Monitor::monitor_dispatch *parms = reinterpret_cast<Monitor::monitor_dispatch *>(parm); |
int index; |
|
for(index = 1; index < (int)_entries.size(); index++) |
|
{ |
|
try |
|
{ |
|
if(_entries[index]._status.get() == _MonitorEntry::EMPTY) |
|
{ |
|
_entries[index].socket = socket; |
|
_entries[index].queueId = queueId; |
|
_entries[index]._type = type; |
|
_entries[index]._status = _MonitorEntry::IDLE; |
| |
if (! parms->_decoder) |
return index; |
|
} |
|
} |
|
catch(...) |
{ | { |
|
} |
|
} |
|
_solicitSocketCount--; // decrease the count, if we are here we didnt do anything meaningful |
|
PEG_METHOD_EXIT(); |
|
return -1; |
| |
parms->_myself->unsolicitSocketMessages(parms->_myself->_entries[parms->_entry].queueId); |
|
return(0); |
|
} | } |
| |
Message* message = new SocketMessage(parms->_socket, parms->_events); |
void Monitor::unsolicitSocketMessages(Sint32 socket) |
parms->_decoder->enqueue(message); |
{ |
|
|
|
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages"); |
|
AutoMutex autoMut(_entry_mut); |
| |
if (parms->_events & SocketMessage::WRITE) |
/* |
|
Start at index = 1 because _entries[0] is the tickle entry which never needs |
|
to be EMPTY; |
|
*/ |
|
unsigned int index; |
|
for(index = 1; index < _entries.size(); index++) |
{ | { |
FD_CLR(parms->_socket, &(parms->_myself->_rep->active_wr_fd_set)); |
if(_entries[index].socket == socket) |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
{ |
"Monitor::run FD_CLR WRITE"); |
_entries[index]._status = _MonitorEntry::EMPTY; |
|
_entries[index].socket = -1; |
|
_solicitSocketCount--; |
|
break; |
|
} |
} | } |
| |
if (parms->_events & SocketMessage::EXCEPTION) |
/* |
{ |
Dynamic Contraction: |
FD_CLR(parms->_socket, &(parms->_myself->_rep->active_ex_fd_set)); |
To remove excess entries we will start from the end of the _entries array |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
and remove all entries with EMPTY status until we find the first NON EMPTY. |
"Monitor::run FD_CLR EXECEPTION"); |
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--; |
|
} |
|
PEG_METHOD_EXIT(); |
} | } |
| |
if (parms->_events & SocketMessage::READ) |
// Note: this is no longer called with PEP 183. |
|
PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm) |
{ | { |
FD_CLR(parms->_socket, &(parms->_myself->_rep->active_rd_fd_set)); |
HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm); |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
"Monitor::run FD_CLR READ"); |
"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 (...) |
delete parms; |
{ |
return(0); |
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); |
| |
|
PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.get() == _MonitorEntry::BUSY); |
| |
void Monitor::set_async(Boolean async) |
// 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) |
{ | { |
_async = async; |
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 |