version 1.54, 2003/10/05 23:25:43
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version 1.82, 2004/12/15 14:12:42
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//%///////////////////////////////////////////////////////////////////////////// |
//%2004//////////////////////////////////////////////////////////////////////// |
// | // |
// 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. |
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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. |
// | // |
// 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: Mike Day (monitor_2) mdday@us.ibm.com | // 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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#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 |
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static AtomicInt _connections = 0; | static AtomicInt _connections = 0; |
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static struct timeval create_time = {0, 1}; | static struct timeval create_time = {0, 1}; |
static struct timeval destroy_time = {300, 0}; | static struct timeval destroy_time = {300, 0}; |
static struct timeval deadlock_time = {0, 0}; | static struct timeval deadlock_time = {0, 0}; |
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#define MAX_NUMBER_OF_MONITOR_ENTRIES 32 | #define MAX_NUMBER_OF_MONITOR_ENTRIES 32 |
Monitor::Monitor() | Monitor::Monitor() |
: _module_handle(0), _controller(0), _async(false), _stopConnections(0) |
: _module_handle(0), |
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_controller(0), |
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_async(false), |
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_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) |
{ | { |
int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; | int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
Socket::initializeInterface(); | Socket::initializeInterface(); |
_rep = 0; | _rep = 0; |
_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); | _entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
for( int i = 0; i < numberOfMonitorEntriesToAllocate; i++ ) |
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// 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++ ) |
{ | { |
_MonitorEntry entry(0, 0, 0); | _MonitorEntry entry(0, 0, 0); |
_entries.append(entry); | _entries.append(entry); |
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} | } |
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Monitor::Monitor(Boolean async) | Monitor::Monitor(Boolean async) |
: _module_handle(0), _controller(0), _async(async), _stopConnections(0) |
: _module_handle(0), |
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_controller(0), |
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_async(async), |
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_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) |
{ | { |
int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; | int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
Socket::initializeInterface(); | Socket::initializeInterface(); |
_rep = 0; | _rep = 0; |
_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); | _entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
for( int i = 0; i < numberOfMonitorEntriesToAllocate; i++ ) |
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// 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++ ) |
{ | { |
_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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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "deleting rep"); | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "deleting rep"); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface"); | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface"); |
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try{ |
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if(_tickle_peer_socket >= 0) |
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{ |
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Socket::close(_tickle_peer_socket); |
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} |
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if(_tickle_client_socket >= 0) |
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{ |
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Socket::close(_tickle_client_socket); |
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} |
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if(_tickle_server_socket >= 0) |
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{ |
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Socket::close(_tickle_server_socket); |
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} |
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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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} |
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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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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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int Monitor::kill_idle_threads() |
// initialize the address |
{ |
memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr)); |
static struct timeval now, last; |
#ifdef PEGASUS_OS_ZOS |
gettimeofday(&now, NULL); |
_tickle_server_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
int dead_threads = 0; |
#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( now.tv_sec - last.tv_sec > 120 ) |
PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_server_addr); |
{ |
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gettimeofday(&last, NULL); |
// bind server side to socket |
try |
if((::bind(_tickle_server_socket, |
{ |
(struct sockaddr *)&_tickle_server_addr, |
dead_threads = _thread_pool->kill_dead_threads(); |
sizeof(_tickle_server_addr))) < 0){ |
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// handle error |
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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()); |
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#endif |
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throw Exception(parms); |
} | } |
catch(IPCException& ) |
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{ |
// tell the kernel we are a server |
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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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// make sure we have the correct socket for our server |
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int sock = ::getsockname(_tickle_server_socket, |
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(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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/* set up the tickle client/connector */ |
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// get a socket for our tickle client |
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if((_tickle_client_socket = ::socket(PF_INET, SOCK_STREAM, 0)) < 0){ |
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// 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); |
} | } |
return dead_threads; |
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// setup the address of the client |
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memset(&_tickle_client_addr, 0, sizeof(_tickle_client_addr)); |
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#ifdef PEGASUS_OS_ZOS |
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_tickle_client_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_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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// bind socket to client side |
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if((::bind(_tickle_client_socket, |
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(struct sockaddr*)&_tickle_client_addr, |
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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); |
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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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// connect to server side |
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if((::connect(_tickle_client_socket, |
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(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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} |
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/* set up the slave connection */ |
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memset(&_tickle_peer_addr, 0, sizeof(_tickle_peer_addr)); |
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PEGASUS_SOCKLEN_SIZE peer_size = sizeof(_tickle_peer_addr); |
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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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(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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(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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void Monitor::tickle(void) |
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{ |
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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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AutoMutex autoMutex(_tickle_mutex); |
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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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void Monitor::setState( Uint32 index, _MonitorEntry::entry_status status ) |
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{ |
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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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Boolean Monitor::run(Uint32 milliseconds) | Boolean Monitor::run(Uint32 milliseconds) |
{ | { |
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Boolean handled_events = false; | Boolean handled_events = false; |
int i = 0; | int i = 0; |
#if defined(PEGASUS_OS_OS400) || defined(PEGASUS_OS_HPUX) |
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struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; | struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; |
#else |
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struct timeval tv = {0, 1}; |
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#endif |
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fd_set fdread; | fd_set fdread; |
FD_ZERO(&fdread); | FD_ZERO(&fdread); |
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_entry_mut.lock(pegasus_thread_self()); | _entry_mut.lock(pegasus_thread_self()); |
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// Check the stopConnections flag. If set, clear the Acceptor monitor entries | // Check the stopConnections flag. If set, clear the Acceptor monitor entries |
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} | } |
} | } |
_stopConnections = 0; | _stopConnections = 0; |
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_stopConnectionsSem.signal(); |
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} |
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for( int indx = 0; indx < (int)_entries.size(); indx++) |
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{ |
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const _MonitorEntry &entry = _entries[indx]; |
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if ((entry._status.value() == _MonitorEntry::DYING) && |
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(entry._type == Monitor::CONNECTION)) |
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{ |
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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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if (h._connectionClosePending == false) |
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continue; |
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// 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 (h._responsePending == true) |
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{ |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "Monitor::run - " |
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"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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} |
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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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_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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Uint32 _idleEntries = 0; | Uint32 _idleEntries = 0; |
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/* |
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We will keep track of the maximum socket number and pass this value |
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to the kernel as a parameter to SELECT. This loop seems like a good |
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place to calculate the max file descriptor (maximum socket number) |
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because we have to traverse the entire array. |
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*/ |
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int maxSocketCurrentPass = 0; |
for( int indx = 0; indx < (int)_entries.size(); indx++) | for( int indx = 0; indx < (int)_entries.size(); indx++) |
{ | { |
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if(maxSocketCurrentPass < _entries[indx].socket) |
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maxSocketCurrentPass = _entries[indx].socket; |
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if(_entries[indx]._status.value() == _MonitorEntry::IDLE) | if(_entries[indx]._status.value() == _MonitorEntry::IDLE) |
{ | { |
_idleEntries++; | _idleEntries++; |
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} | } |
} | } |
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/* |
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Add 1 then assign maxSocket accordingly. We add 1 to account for |
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descriptors starting at 0. |
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*/ |
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maxSocketCurrentPass++; |
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_entry_mut.unlock(); | _entry_mut.unlock(); |
int events = select(FD_SETSIZE, &fdread, NULL, NULL, &tv); |
int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv); |
_entry_mut.lock(pegasus_thread_self()); | _entry_mut.lock(pegasus_thread_self()); |
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#ifdef PEGASUS_OS_TYPE_WINDOWS | #ifdef PEGASUS_OS_TYPE_WINDOWS |
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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 ) |
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// Do not update the entry just yet. The entry gets updated once |
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// the request has been read. |
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//_entries[indx]._status = _MonitorEntry::BUSY; |
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// If allocate_and_awaken failure, retry on next iteration |
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/* Removed for PEP 183. |
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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; |
*/ |
_thread_pool->allocate_and_awaken((void *)q, _dispatch); |
// Added for PEP 183 |
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HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(q); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p", |
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dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst); |
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try |
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{ |
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dst->run(1); |
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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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"Monitor::_dispatch: exception received"); |
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} |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::_dispatch: exited run() for index %d", dst->_entry_index); |
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|
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// It is possible the entry status may not be set to busy. |
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// The following will fail in that case. |
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// PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _MonitorEntry::BUSY); |
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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. |
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|
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// The following is not relevant as the worker thread or the |
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// reader thread will update the status of the entry. |
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//if (dst->_connectionClosePending) |
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//{ |
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// dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING; |
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//} |
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//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 == _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 == _MonitorEntry::IDLE; |
} | } |
else | else |
{ | { |
|
|
return(handled_events); | return(handled_events); |
} | } |
| |
void Monitor::stopListeningForConnections() |
void Monitor::stopListeningForConnections(Boolean wait) |
{ | { |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()"); | PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()"); |
|
// set boolean then tickle the server to recognize _stopConnections |
_stopConnections = 1; | _stopConnections = 1; |
|
tickle(); |
|
|
|
if (wait) |
|
{ |
|
// Wait for the monitor to notice _stopConnections. Otherwise the |
|
// caller of this function may unbind the ports while the monitor |
|
// is still accepting connections on them. |
|
try |
|
{ |
|
_stopConnectionsSem.time_wait(10000); |
|
} |
|
catch (TimeOut &) |
|
{ |
|
// The monitor is probably busy processng a very long request, and is |
|
// not accepting connections. Let the caller unbind the ports. |
|
} |
|
} |
| |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
} | } |
|
|
Uint32 queueId, | Uint32 queueId, |
int type) | int type) |
{ | { |
|
|
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages"); | 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(_solicitSocketCount >= (size-1)){ |
|
for(int i = 0; i < (_solicitSocketCount - (size-1)); i++){ |
|
_MonitorEntry entry(0, 0, 0); |
|
_entries.append(entry); |
|
} |
|
} |
| |
_entry_mut.lock(pegasus_thread_self()); |
int index; |
|
for(index = 1; index < (int)_entries.size(); index++) |
for(int index = 0; index < (int)_entries.size(); index++) |
|
{ | { |
try | try |
{ | { |
|
|
_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::IDLE; |
_entry_mut.unlock(); |
|
| |
return index; | return index; |
} | } |
|
|
catch(...) | catch(...) |
{ | { |
} | } |
|
|
} | } |
_entry_mut.unlock(); |
_solicitSocketCount--; // decrease the count, if we are here we didnt do anything meaningful |
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
return -1; | return -1; |
|
|
} | } |
| |
void Monitor::unsolicitSocketMessages(Sint32 socket) | void Monitor::unsolicitSocketMessages(Sint32 socket) |
{ | { |
| |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages"); | PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages"); |
_entry_mut.lock(pegasus_thread_self()); |
AutoMutex autoMut(_entry_mut); |
| |
for(int index = 0; index < (int)_entries.size(); index++) |
/* |
|
Start at index = 1 because _entries[0] is the tickle entry which never needs |
|
to be EMPTY; |
|
*/ |
|
int 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]._status = _MonitorEntry::EMPTY; |
_entries[index].socket = -1; | _entries[index].socket = -1; |
|
_solicitSocketCount--; |
break; | break; |
} | } |
} | } |
_entry_mut.unlock(); |
|
|
/* |
|
Dynamic Contraction: |
|
To remove excess entries we will start from the end of the _entries array |
|
and remove all entries with EMPTY status until we find the first NON EMPTY. |
|
This prevents the positions, of the NON EMPTY entries, from being changed. |
|
*/ |
|
index = _entries.size() - 1; |
|
while(_entries[index]._status == _MonitorEntry::EMPTY){ |
|
if(_entries.size() > MAX_NUMBER_OF_MONITOR_ENTRIES) |
|
_entries.remove(index); |
|
index--; |
|
} |
|
|
PEG_METHOD_EXIT(); | PEG_METHOD_EXIT(); |
} | } |
| |
|
// Note: this is no longer called with PEP 183. |
PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm) | PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm) |
{ | { |
HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm); | HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm); |
|
|
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); |
| |
dst->_monitor->_entry_mut.lock(pegasus_thread_self()); |
|
// It shouldn't be necessary to set status = _MonitorEntry::IDLE |
|
// if the connection is being closed. However, the current logic |
|
// in Monitor::run requires this value to be set for the close |
|
// to be processed. |
|
|
|
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; |
|
|
// 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) | if (dst->_connectionClosePending) |
{ | { |
dst->_dying = 1; |
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING; |
|
} |
|
else |
|
{ |
|
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
} | } |
dst->_monitor->_entry_mut.unlock(); |
|
return 0; | return 0; |
} | } |
| |
|
|
////************************* monitor 2 *****************************//// | ////************************* monitor 2 *****************************//// |
| |
| |
|
|
|
|
|
|
m2e_rep::m2e_rep(void) | m2e_rep::m2e_rep(void) |
:Base(), state(IDLE) | :Base(), state(IDLE) |
| |
|
|
| |
monitor_2_entry::~monitor_2_entry(void) | monitor_2_entry::~monitor_2_entry(void) |
{ | { |
|
|
Dec(_rep); | Dec(_rep); |
} | } |
| |
|
|
| |
} | } |
| |
|
//static monitor_2* _m2_instance; |
| |
AsyncDQueue<HTTPConnection2> monitor_2::_connections(true, 0); | AsyncDQueue<HTTPConnection2> monitor_2::_connections(true, 0); |
| |
|
|
monitor_2::monitor_2(void) | monitor_2::monitor_2(void) |
: _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0), | : _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0), |
_ready(true, 0), _die(0), _requestCount(0) | _ready(true, 0), _die(0), _requestCount(0) |
|
|
#ifdef PEGASUS_OS_ZOS | #ifdef PEGASUS_OS_ZOS |
_tickle_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); | _tickle_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
#else | #else |
|
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
|
#pragma convert(37) |
|
#endif |
_tickle_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); | _tickle_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
|
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
|
#pragma convert(0) |
|
#endif |
#endif | #endif |
_tickle_addr.sin_family = PF_INET; | _tickle_addr.sin_family = PF_INET; |
_tickle_addr.sin_port = 0; | _tickle_addr.sin_port = 0; |
|
|
PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); | PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); |
| |
pegasus_socket accepted = temp.accept((struct sockaddr*)&peer, &peer_size); | pegasus_socket accepted = temp.accept((struct sockaddr*)&peer, &peer_size); |
|
|
monitor_2_entry* _tickle = new monitor_2_entry(accepted, INTERNAL, 0, 0); | monitor_2_entry* _tickle = new monitor_2_entry(accepted, INTERNAL, 0, 0); |
_tickle->set_state(BUSY); |
|
|
// No need to set _tickle's state as BUSY, since monitor_2::run() now |
|
// does a select only on sockets which are in IDLE (default) state. |
|
// _tickle->set_state(BUSY); |
| |
_listeners.insert_first(_tickle); | _listeners.insert_first(_tickle); |
| |
|
|
| |
monitor_2::~monitor_2(void) | monitor_2::~monitor_2(void) |
{ | { |
|
|
|
stop(); |
|
|
try { | try { |
monitor_2_entry* temp = _listeners.remove_first(); | monitor_2_entry* temp = _listeners.remove_first(); |
while(temp){ | while(temp){ |
|
|
temp = _listeners.remove_first(); | temp = _listeners.remove_first(); |
} | } |
} | } |
|
|
catch(...){ } | catch(...){ } |
|
|
|
|
|
try |
|
{ |
|
HTTPConnection2* temp = _connections.remove_first(); |
|
while(temp) |
|
{ |
|
delete temp; |
|
temp = _connections.remove_first(); |
|
} |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
|
} | } |
| |
| |
void monitor_2::run(void) | void monitor_2::run(void) |
{ | { |
monitor_2_entry* temp; | monitor_2_entry* temp; |
|
int _nonIdle=0, _idleCount=0, events; |
|
|
while(_die.value() == 0) { | while(_die.value() == 0) { |
|
_nonIdle=_idleCount=0; |
| |
struct timeval tv = {0, 0}; |
struct timeval tv_idle = { 60, 0 }; |
| |
// place all sockets in the select set | // place all sockets in the select set |
FD_ZERO(&rd_fd_set); | FD_ZERO(&rd_fd_set); |
try { | try { |
_listeners.lock(pegasus_thread_self()); | _listeners.lock(pegasus_thread_self()); |
temp = _listeners.next(0); | temp = _listeners.next(0); |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::run:Creating New FD list for SELECT."); |
while(temp != 0 ){ | while(temp != 0 ){ |
if(temp->get_state() == CLOSED ){ | if(temp->get_state() == CLOSED ){ |
monitor_2_entry* closed = temp; | monitor_2_entry* closed = temp; |
temp = _listeners.next(closed); | temp = _listeners.next(closed); |
_listeners.remove_no_lock(closed); | _listeners.remove_no_lock(closed); |
|
|
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::run:Deleteing CLOSED socket fd=%d.",(Sint32)closed->get_sock()); |
|
|
HTTPConnection2 *cn = monitor_2::remove_connection((Sint32)(closed->get_sock())); | HTTPConnection2 *cn = monitor_2::remove_connection((Sint32)(closed->get_sock())); |
delete cn; | delete cn; |
delete closed; | delete closed; |
} | } |
if(temp == 0) | if(temp == 0) |
break; | break; |
|
|
|
|
|
//Count the number if IDLE sockets |
|
if(temp->get_state() != IDLE ) _nonIdle++; |
|
else _idleCount++; |
|
|
Sint32 fd = (Sint32) temp->get_sock(); | Sint32 fd = (Sint32) temp->get_sock(); |
if(fd >= 0 ) |
|
|
//Select should be called ONLY on the FDs which are in IDLE state |
|
if((fd >= 0) && (temp->get_state() == IDLE)) |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::run:Adding FD %d to the list for SELECT.",fd); |
FD_SET(fd , &rd_fd_set); | FD_SET(fd , &rd_fd_set); |
|
} |
temp = _listeners.next(temp); | temp = _listeners.next(temp); |
} | } |
_listeners.unlock(); | _listeners.unlock(); |
|
|
catch(...){ | catch(...){ |
return; | return; |
} | } |
|
|
// important - the dispatch routine has pointers to all the | // important - the dispatch routine has pointers to all the |
// entries that are readable. These entries can be changed but | // entries that are readable. These entries can be changed but |
// the pointer must not be tampered with. | // the pointer must not be tampered with. |
|
if(_connections.count() ) |
|
events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, NULL); |
|
else |
|
events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, &tv_idle); |
|
|
|
if(_die.value()) |
|
{ |
|
break; |
|
} |
|
|
|
#ifdef PEGASUS_OS_TYPE_WINDOWS |
|
if(events == SOCKET_ERROR) |
|
#else |
|
if(events == -1) |
|
#endif |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL2, |
|
"monitor_2:run:INVALID FD. errorno = %d 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. |
|
|
|
// Keeping the line below commented for time being. |
|
// PEGASUS_ASSERT(errno != EBADF); |
|
} |
|
else if (events) |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::run select event received events = %d, monitoring %d idle entries", events, _idleCount); |
|
|
| |
int events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, NULL); |
|
try { | try { |
_listeners.lock(pegasus_thread_self()); | _listeners.lock(pegasus_thread_self()); |
temp = _listeners.next(0); | temp = _listeners.next(0); |
while(temp != 0 ){ | while(temp != 0 ){ |
Sint32 fd = (Sint32) temp->get_sock(); | Sint32 fd = (Sint32) temp->get_sock(); |
if(fd >= 0 && FD_ISSET(fd, &rd_fd_set)) { | if(fd >= 0 && FD_ISSET(fd, &rd_fd_set)) { |
temp->set_state(BUSY); |
if(temp->get_type() != CLIENTSESSION) temp->set_state(BUSY); |
FD_CLR(fd, &rd_fd_set); | FD_CLR(fd, &rd_fd_set); |
monitor_2_entry* ready = new monitor_2_entry(*temp); | monitor_2_entry* ready = new monitor_2_entry(*temp); |
try | try |
|
|
return; | return; |
} | } |
// now handle the sockets that are ready to read | // now handle the sockets that are ready to read |
|
if(_ready.count()) |
_dispatch(); | _dispatch(); |
|
else |
|
{ |
|
if(_connections.count() == 0 ) |
|
_idle_dispatch(_idle_parm); |
|
} |
|
} // if events |
} // while alive | } // while alive |
|
_die=0; |
|
|
|
} |
|
|
|
int monitor_2::solicitSocketMessages( |
|
Sint32 socket, |
|
Uint32 events, |
|
Uint32 queueId, |
|
int type) |
|
{ |
|
|
|
PEG_METHOD_ENTER(TRC_HTTP, "monitor_2::solicitSocketMessages"); |
|
|
|
AutoMutex autoMut(_entry_mut); |
|
|
|
for(int index = 0; index < (int)_entries.size(); index++) |
|
{ |
|
try |
|
{ |
|
if(_entries[index]._status.value() == monitor_2_entry::EMPTY) |
|
{ |
|
_entries[index].socket = socket; |
|
//_entries[index].queueId = queueId; |
|
//_entries[index]._type = type; |
|
_entries[index]._status = IDLE; |
|
|
|
return index; |
|
} |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
} |
|
PEG_METHOD_EXIT(); |
|
return -1; |
|
} |
|
|
|
|
|
void monitor_2::unsolicitSocketMessages(Sint32 socket) |
|
{ |
|
|
|
PEG_METHOD_ENTER(TRC_HTTP, "monitor_2::unsolicitSocketMessages"); |
|
AutoMutex autoMut(_entry2_mut); |
|
|
|
for(int index = 0; index < (int)_entries2.size(); index++) |
|
{ |
|
if(_entries2[index].socket == socket) |
|
{ |
|
_entries2[index]._status = monitor_2_entry::EMPTY; |
|
_entries2[index].socket = -1; |
|
break; |
|
} |
|
} |
|
PEG_METHOD_EXIT(); |
} | } |
| |
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*)_accept_dispatch; | void* old = (void*)_accept_dispatch; |
_accept_dispatch = dp; | _accept_dispatch = dp; |
return old; | return old; |
|
} |
| |
|
void* monitor_2::set_idle_dispatch(void (*dp)(void*)) |
|
{ |
|
void* old = (void*)_idle_dispatch; |
|
_idle_dispatch = dp; |
|
return old; |
|
} |
|
|
|
void* monitor_2::set_idle_parm(void* parm) |
|
{ |
|
void* old = _idle_parm; |
|
_idle_parm = parm; |
|
return old; |
} | } |
| |
| |
// important - the dispatch routine has pointers to all the |
|
// entries that are readable. These entries can be changed but |
//----------------------------------------------------------------- |
// the pointer must not be tampered with. |
// Note on deleting the monitor_2_entry nodes: |
|
// Each case: in the switch statement needs to handle the deletion |
|
// of the monitor_2_entry * node differently. A SESSION dispatch |
|
// routine MUST DELETE the entry during its dispatch handling. |
|
// All other dispatch routines MUST NOT delete the entry during the |
|
// dispatch handling, but must allow monitor_2::_dispatch to delete |
|
// the entry. |
|
// |
|
// The reason is pretty obscure and it is debatable whether or not |
|
// to even bother, but during cimserver shutdown the single monitor_2_entry* |
|
// will leak unless the _session_dispatch routine takes care of deleting it. |
|
// |
|
// The reason is that a shutdown messages completely stops everything and |
|
// the _session_dispatch routine never returns. So monitor_2::_dispatch is |
|
// never able to do its own cleanup. |
|
// |
|
// << Mon Oct 13 09:33:33 2003 mdd >> |
|
//----------------------------------------------------------------- |
|
|
void monitor_2::_dispatch(void) | void monitor_2::_dispatch(void) |
{ | { |
monitor_2_entry* entry; | monitor_2_entry* entry; |
| |
if(_ready.count() == 0 ) |
|
return; |
|
|
|
|
|
try | try |
{ | { |
| |
|
|
entry->get_sock().disableBlocking(); | entry->get_sock().disableBlocking(); |
entry->get_sock().read(&buffer, 2); | entry->get_sock().read(&buffer, 2); |
entry->get_sock().enableBlocking(); | entry->get_sock().enableBlocking(); |
|
entry->set_state(IDLE); // Set state of the socket to IDLE so that |
|
// monitor_2::run can add to the list of FDs |
|
// on which select would be called. |
|
|
|
|
|
|
|
delete entry; |
|
|
break; | break; |
case LISTEN: | case LISTEN: |
{ | { |
|
|
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); |
|
entry->set_state(IDLE); // Set state of the LISTEN socket to IDLE |
|
#ifdef PEGASUS_OS_TYPE_WINDOWS |
|
if((Sint32)connected == SOCKET_ERROR) |
|
#else |
|
if((Sint32)connected == -1 ) |
|
#endif |
|
{ |
|
delete entry; |
|
break; |
|
} |
|
|
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) |
_accept_dispatch(temp); | _accept_dispatch(temp); |
|
delete entry; |
|
|
} | } |
break; | break; |
case SESSION: | case SESSION: |
|
case CLIENTSESSION: |
if(_session_dispatch != 0 ) | if(_session_dispatch != 0 ) |
|
{ |
|
// NOTE: _session_dispatch will delete entry - do not do it here |
|
unsigned client=0; |
|
if(entry->get_type() == CLIENTSESSION) client = 1; |
|
Sint32 sock=(Sint32)(entry->get_sock()); |
|
|
_session_dispatch(entry); | _session_dispatch(entry); |
|
|
|
if(client) |
|
{ |
|
HTTPConnection2 *cn = monitor_2::remove_connection(sock); |
|
if(cn) delete cn; |
|
// stop(); |
|
_die=1; |
|
} |
|
} |
|
|
else { | else { |
static char buffer[4096]; | static char buffer[4096]; |
int bytes = entry->get_sock().read(&buffer, 4096); | int bytes = entry->get_sock().read(&buffer, 4096); |
|
delete entry; |
} | } |
| |
break; | break; |
case UNTYPED: | case UNTYPED: |
default: | default: |
|
delete entry; |
break; | break; |
} | } |
_requestCount--; | _requestCount--; |
delete entry; |
|
| |
if(_ready.count() == 0 ) | if(_ready.count() == 0 ) |
break; | break; |
|
|
{ | { |
_die = 1; | _die = 1; |
tickle(); | tickle(); |
|
|
// shut down the listener list, free the list nodes | // shut down the listener list, free the list nodes |
_tickler.get_sock().close(); | _tickler.get_sock().close(); |
_listeners.shutdown_queue(); | _listeners.shutdown_queue(); |
|
|
'0','0' | '0','0' |
}; | }; |
| |
|
_tickler.get_sock().disableBlocking(); |
|
|
_tickler.get_sock().write(&_buffer, 2); | _tickler.get_sock().write(&_buffer, 2); |
|
_tickler.get_sock().enableBlocking(); |
|
|
} | } |
| |
| |
|
|
void* accept_parm, | void* accept_parm, |
void* dispatch_parm) | void* dispatch_parm) |
{ | { |
|
Sint32 fd1,fd2; |
|
|
|
fd2=(Sint32) ps; |
|
|
monitor_2_entry* m2e = new monitor_2_entry(ps, type, accept_parm, dispatch_parm); | monitor_2_entry* m2e = new monitor_2_entry(ps, type, accept_parm, dispatch_parm); |
| |
|
// The purpose of the following piece of code is to avoid duplicate entries in |
|
// the _listeners list. Would it be too much of an overhead ? |
|
try { |
|
|
|
monitor_2_entry* temp; |
|
|
|
_listeners.lock(pegasus_thread_self()); |
|
temp = _listeners.next(0); |
|
while(temp != 0 ) |
|
{ |
|
fd1=(Sint32) temp->get_sock(); |
|
|
|
if(fd1 == fd2) |
|
{ |
|
|
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL3, |
|
"monitor_2::add_entry:Request for duplicate entry in _listeners for %d FD.", fd1); |
|
if(temp->get_state() == CLOSED) |
|
{ |
|
temp->set_state(IDLE); |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL3, |
|
"monitor_2::add_entry:CLOSED state changed to IDLE for %d.", fd1); |
|
} |
|
_listeners.unlock(); |
|
delete m2e; |
|
return 0; |
|
} |
|
temp = _listeners.next(temp); |
|
} |
|
} |
|
catch(...) |
|
{ |
|
delete m2e; |
|
return 0; |
|
} |
|
|
|
|
|
_listeners.unlock(); |
|
|
|
|
try{ | try{ |
_listeners.insert_first(m2e); | _listeners.insert_first(m2e); |
} | } |
|
|
delete m2e; | delete m2e; |
return 0; | return 0; |
} | } |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::add_entry:SUCCESSFULLY added to _listeners list. FD = %d.", fd2); |
tickle(); | tickle(); |
return m2e; | return m2e; |
} | } |