version 1.44, 2003/08/22 16:15:22
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version 1.122, 2007/10/19 18:12:26
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//%///////////////////////////////////////////////////////////////////////////// |
//%2006//////////////////////////////////////////////////////////////////////// |
// | // |
// 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. |
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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. |
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// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; |
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// EMC Corporation; Symantec 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) |
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// |
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// Modified By: |
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// |
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//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
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#include "Network.h" |
#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> |
#ifdef PEGASUS_OS_TYPE_WINDOWS |
#include <Pegasus/Common/Exception.h> |
# if defined(FD_SETSIZE) && FD_SETSIZE != 1024 |
#include "ArrayIterator.h" |
# error "FD_SETSIZE was not set to 1024 prior to the last inclusion \ |
#include "HostAddress.h" |
of <winsock.h>. It may have been indirectly included (e.g., by including \ |
#include <errno.h> |
<windows.h>). Finthe inclusion of that header which is visible to this \ |
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compilation unit and #define FD_SETZIE to 1024 prior to that inclusion; \ |
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otherwise, less than 64 clients (the default) will be able to connect to the \ |
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CIMOM. PLEASE DO NOT SUPPRESS THIS WARNING; PLEASE FIX THE PROBLEM." |
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# endif |
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# define FD_SETSIZE 1024 |
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# include <windows.h> |
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#else |
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# include <sys/types.h> |
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# include <sys/socket.h> |
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# include <sys/time.h> |
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# include <netinet/in.h> |
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# include <netdb.h> |
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# include <arpa/inet.h> |
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#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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static AtomicInt _connections(0); |
static AtomicInt _connections = 0; |
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static struct timeval create_time = {0, 1}; |
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static struct timeval destroy_time = {300, 0}; |
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static struct timeval deadlock_time = {0, 0}; |
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//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
// | // |
// MonitorRep |
// Tickler |
// | // |
//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
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struct MonitorRep |
Tickler::Tickler() |
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: _listenSocket(PEGASUS_INVALID_SOCKET), |
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_clientSocket(PEGASUS_INVALID_SOCKET), |
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_serverSocket(PEGASUS_INVALID_SOCKET) |
{ | { |
fd_set rd_fd_set; |
} |
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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// Monitor |
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// |
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//////////////////////////////////////////////////////////////////////////////// |
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Monitor::Monitor() |
Tickler::~Tickler() |
: _module_handle(0), _controller(0), _async(false) |
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{ | { |
Socket::initializeInterface(); |
uninitialize(); |
_rep = 0; |
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_entries.reserveCapacity(32); |
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for( int i = 0; i < 32; i++ ) |
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{ |
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_MonitorEntry entry(0, 0, 0); |
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_entries.append(entry); |
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} |
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} | } |
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Monitor::Monitor(Boolean async) |
Boolean Tickler::initialize() |
: _module_handle(0), _controller(0), _async(async) |
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{ | { |
Socket::initializeInterface(); |
// |
_rep = 0; |
// Set up the addresses for the listen, client, and server sockets |
_entries.reserveCapacity(32); |
// based on whether IPv6 is enabled. |
for( int i = 0; i < 32; i++ ) |
// |
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#ifdef PEGASUS_ENABLE_IPV6 |
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struct sockaddr_storage listenAddress; |
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struct sockaddr_storage clientAddress; |
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struct sockaddr_storage serverAddress; |
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#else |
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struct sockaddr_in listenAddress; |
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struct sockaddr_in clientAddress; |
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struct sockaddr_in serverAddress; |
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#endif |
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int addressFamily; |
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SocketLength addressLength; |
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#ifdef PEGASUS_ENABLE_IPV6 |
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if (System::isIPv6StackActive()) |
{ | { |
_MonitorEntry entry(0, 0, 0); |
// Use the IPv6 loopback address for the listen sockets |
_entries.append(entry); |
HostAddress::convertTextToBinary( |
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HostAddress::AT_IPV6, |
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"::1", |
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&reinterpret_cast<struct sockaddr_in6*>(&listenAddress)->sin6_addr); |
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listenAddress.ss_family = AF_INET6; |
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reinterpret_cast<struct sockaddr_in6*>(&listenAddress)->sin6_port = 0; |
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addressFamily = AF_INET6; |
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addressLength = sizeof(struct sockaddr_in6); |
} | } |
if( _async == true ) |
else |
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#endif |
{ | { |
_thread_pool = new ThreadPool(0, |
// Use the IPv4 loopback address for the listen sockets |
"Monitor", |
HostAddress::convertTextToBinary( |
0, |
HostAddress::AT_IPV4, |
0, |
"127.0.0.1", |
create_time, |
&reinterpret_cast<struct sockaddr_in*>( |
destroy_time, |
&listenAddress)->sin_addr.s_addr); |
deadlock_time); |
reinterpret_cast<struct sockaddr_in*>(&listenAddress)->sin_family = |
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AF_INET; |
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reinterpret_cast<struct sockaddr_in*>(&listenAddress)->sin_port = 0; |
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addressFamily = AF_INET; |
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addressLength = sizeof(struct sockaddr_in); |
} | } |
else |
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_thread_pool = 0; |
// Use the same address for the client socket as the listen socket |
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clientAddress = listenAddress; |
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// |
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// Set up a listen socket to allow the tickle client and server to connect |
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// |
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// Create the listen socket |
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if ((_listenSocket = Socket::createSocket(addressFamily, SOCK_STREAM, 0)) == |
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PEGASUS_INVALID_SOCKET) |
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{ |
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MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_CREATE", |
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"Received error number $0 while creating the internal socket.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
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Monitor::~Monitor() |
// Bind the listen socket to the loopback address |
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if (::bind( |
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_listenSocket, |
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reinterpret_cast<struct sockaddr*>(&listenAddress), |
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addressLength) < 0) |
{ | { |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
#ifdef PEGASUS_OS_ZOS |
"deregistering with module controller"); |
MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_BIND_LONG", |
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"Received error:$0 while binding the internal socket.", |
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strerror(errno)); |
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#else |
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MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_BIND", |
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"Received error number $0 while binding the internal socket.", |
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getSocketError()); |
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#endif |
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throw Exception(parms); |
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} |
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if(_module_handle != NULL) |
// Listen for a connection from the tickle client |
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if ((::listen(_listenSocket, 3)) < 0) |
{ | { |
_controller->deregister_module(PEGASUS_MODULENAME_MONITOR); |
MessageLoaderParms parms( |
_controller = 0; |
"Common.Monitor.TICKLE_LISTEN", |
delete _module_handle; |
"Received error number $0 while listening to the internal socket.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "deleting rep"); |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface"); |
// Verify we have the correct listen socket |
Socket::uninitializeInterface(); |
SocketLength tmpAddressLength = addressLength; |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
int sock = ::getsockname( |
"returning from monitor destructor"); |
_listenSocket, |
if(_async == true) |
reinterpret_cast<struct sockaddr*>(&listenAddress), |
delete _thread_pool; |
&tmpAddressLength); |
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if (sock < 0) |
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{ |
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MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_SOCKNAME", |
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"Received error number $0 while getting the internal socket name.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
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// |
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// Set up the client side of the tickle connection. |
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// |
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int Monitor::kill_idle_threads() |
// Create the client socket |
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if ((_clientSocket = Socket::createSocket(addressFamily, SOCK_STREAM, 0)) == |
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PEGASUS_INVALID_SOCKET) |
{ | { |
static struct timeval now, last; |
MessageLoaderParms parms( |
gettimeofday(&now, NULL); |
"Common.Monitor.TICKLE_CLIENT_CREATE", |
int dead_threads = 0; |
"Received error number $0 while creating the internal client " |
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"socket.", |
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getSocketError()); |
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throw Exception(parms); |
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} |
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if( now.tv_sec - last.tv_sec > 120 ) |
// Bind the client socket to the loopback address |
{ |
if (::bind( |
gettimeofday(&last, NULL); |
_clientSocket, |
try |
reinterpret_cast<struct sockaddr*>(&clientAddress), |
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addressLength) < 0) |
{ | { |
dead_threads = _thread_pool->kill_dead_threads(); |
MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_CLIENT_BIND", |
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"Received error number $0 while binding the internal client " |
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"socket.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
catch(IPCException& ) |
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// Connect the client socket to the listen socket address |
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if (::connect( |
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_clientSocket, |
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reinterpret_cast<struct sockaddr*>(&listenAddress), |
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addressLength) < 0) |
{ | { |
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MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_CLIENT_CONNECT", |
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"Received error number $0 while connecting the internal client " |
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"socket.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
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} |
// |
return dead_threads; |
// Set up the server side of the tickle connection. |
} |
// |
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tmpAddressLength = addressLength; |
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Boolean Monitor::run(Uint32 milliseconds) |
// Accept the client socket connection. The accept call may fail with |
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// EAGAIN. Try a max of 20 times to establish this connection. |
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unsigned int retries = 0; |
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do |
{ | { |
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_serverSocket = ::accept( |
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_listenSocket, |
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reinterpret_cast<struct sockaddr*>(&serverAddress), |
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&tmpAddressLength); |
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Boolean handled_events = false; |
if ((_serverSocket != PEGASUS_SOCKET_ERROR) || |
int i = 0; |
(getSocketError() != PEGASUS_NETWORK_TRYAGAIN)) |
#if defined(PEGASUS_OS_OS400) || defined(PEGASUS_OS_HPUX) |
{ |
struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; |
break; |
#else |
} |
struct timeval tv = {0, 1}; |
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#endif |
Threads::sleep(1); |
fd_set fdread; |
retries++; |
FD_ZERO(&fdread); |
} while (retries <= 20); |
_entry_mut.lock(pegasus_thread_self()); |
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for( int indx = 0; indx < (int)_entries.size(); indx++) |
if (_serverSocket == PEGASUS_SOCKET_ERROR) |
{ | { |
if(_entries[indx]._status.value() == _MonitorEntry::IDLE) |
if (getSocketError() == PEGASUS_NETWORK_TCPIP_STOPPED) |
{ | { |
FD_SET(_entries[indx].socket, &fdread); |
// TCP/IP is down |
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uninitialize(); |
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return false; |
} | } |
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MessageLoaderParms parms( |
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"Common.Monitor.TICKLE_ACCEPT", |
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"Received error number $0 while accepting the internal socket " |
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"connection.", |
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getSocketError()); |
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throw Exception(parms); |
} | } |
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// |
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// Close the listen socket and make the other sockets non-blocking |
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// |
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int events = select(FD_SETSIZE, &fdread, NULL, NULL, &tv); |
Socket::close(_listenSocket); |
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_listenSocket = PEGASUS_INVALID_SOCKET; |
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#ifdef PEGASUS_OS_TYPE_WINDOWS |
Socket::disableBlocking(_serverSocket); |
if(events && events != SOCKET_ERROR ) |
Socket::disableBlocking(_clientSocket); |
#else |
return true; |
if(events && events != -1 ) |
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#endif |
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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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if(FD_ISSET(_entries[indx].socket, &fdread)) |
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{ |
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MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); |
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if(q == 0) |
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{ |
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try |
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{ |
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_entries[indx]._status = _MonitorEntry::EMPTY; |
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} | } |
catch(...) |
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void Tickler::uninitialize() |
{ | { |
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PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, "uninitializing interface"); |
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} |
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continue; |
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} |
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try | try |
{ | { |
if(_entries[indx]._type == Monitor::CONNECTION) |
if (_serverSocket != PEGASUS_INVALID_SOCKET) |
{ |
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static_cast<HTTPConnection *>(q)->_entry_index = indx; |
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if(static_cast<HTTPConnection *>(q)->_dying.value() > 0 ) |
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{ | { |
_entries[indx]._status = _MonitorEntry::DYING; |
Socket::close(_serverSocket); |
MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner(); |
_serverSocket = PEGASUS_INVALID_SOCKET; |
Message* message= new CloseConnectionMessage(_entries[indx].socket); |
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message->dest = o.getQueueId(); |
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_entry_mut.unlock(); |
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o.enqueue(message); |
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return true; |
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} | } |
_entries[indx]._status = _MonitorEntry::BUSY; |
if (_clientSocket != PEGASUS_INVALID_SOCKET) |
_thread_pool->allocate_and_awaken((void *)q, _dispatch); |
{ |
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Socket::close(_clientSocket); |
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_clientSocket = PEGASUS_INVALID_SOCKET; |
} | } |
else |
if (_listenSocket != PEGASUS_INVALID_SOCKET) |
{ | { |
int events = 0; |
Socket::close(_listenSocket); |
events |= SocketMessage::READ; |
_listenSocket = PEGASUS_INVALID_SOCKET; |
Message *msg = new SocketMessage(_entries[indx].socket, events); |
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_entries[indx]._status = _MonitorEntry::BUSY; |
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_entry_mut.unlock(); |
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q->enqueue(msg); |
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_entries[indx]._status = _MonitorEntry::IDLE; |
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return true; |
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} | } |
} | } |
catch(...) | catch(...) |
{ | { |
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PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, |
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"Failed to close tickle sockets"); |
} | } |
handled_events = true; |
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} |
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} |
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} |
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_entry_mut.unlock(); |
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return(handled_events); |
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} | } |
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//////////////////////////////////////////////////////////////////////////////// |
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// |
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// Monitor |
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// |
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//////////////////////////////////////////////////////////////////////////////// |
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int Monitor::solicitSocketMessages( |
#define MAX_NUMBER_OF_MONITOR_ENTRIES 32 |
Sint32 socket, |
Monitor::Monitor() |
Uint32 events, |
: _stopConnections(0), |
Uint32 queueId, |
_stopConnectionsSem(0), |
int type) |
_solicitSocketCount(0) |
{ | { |
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int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
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Socket::initializeInterface(); |
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_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
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PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solicitSocketMessages"); |
// setup the tickler |
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initializeTickler(); |
int index = -1; |
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_entry_mut.lock(pegasus_thread_self()); |
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for(index = 0; index < (int)_entries.size(); index++) |
// Start the count at 1 because initilizeTickler() |
{ |
// has added an entry in the first position of the |
try |
// _entries array |
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for (int i = 1; i < numberOfMonitorEntriesToAllocate; i++) |
{ | { |
if(_entries[index]._status.value() == _MonitorEntry::EMPTY) |
_MonitorEntry entry(0, 0, 0); |
{ |
_entries.append(entry); |
_entries[index].socket = socket; |
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_entries[index].queueId = queueId; |
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_entries[index]._type = type; |
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_entries[index]._status = _MonitorEntry::IDLE; |
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_entry_mut.unlock(); |
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return index; |
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} | } |
} | } |
catch(...) |
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Monitor::~Monitor() |
{ | { |
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_tickler.uninitialize(); |
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Socket::uninitializeInterface(); |
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PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, |
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"returning from monitor destructor"); |
} | } |
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} |
void Monitor::initializeTickler() |
_entry_mut.unlock(); |
{ |
PEG_METHOD_EXIT(); |
while (!_tickler.initialize()) |
return index; |
{ |
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// Retry until TCP/IP is started |
} | } |
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void Monitor::unsolicitSocketMessages(Sint32 socket) |
// Create a MonitorEntry for the tickler and set its state to IDLE so the |
{ |
// Monitor will watch for its events. |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages"); |
_MonitorEntry entry(_tickler.getServerSocket(), 1, INTERNAL); |
_entry_mut.lock(pegasus_thread_self()); |
entry._status = _MonitorEntry::IDLE; |
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for(int index = 0; index < (int)_entries.size(); index++) |
if (_entries.size() == 0) |
{ | { |
if(_entries[index].socket == socket) |
// The tickler has not been initialized before; add its entry at the |
{ |
// beginning of the list. |
_entries[index]._status = _MonitorEntry::EMPTY; |
_entries.append(entry); |
break; |
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} | } |
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else |
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{ |
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// Overwrite the existing tickler entry. |
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_entries[0] = entry; |
} | } |
_entry_mut.unlock(); |
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PEG_METHOD_EXIT(); |
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} | } |
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PEGASUS_THREAD_RETURN PEGASUS_THREAD_CDECL Monitor::_dispatch(void *parm) |
void Monitor::tickle() |
{ | { |
HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm); |
AutoMutex autoMutex(_tickleMutex); |
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Socket::write(_tickler.getClientSocket(), "\0\0", 2); |
dst->run(1); |
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if( dst->_monitor->_entries.size() > (Uint32)dst->_entry_index ) |
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dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
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return 0; |
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} | } |
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void Monitor::setState( |
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Uint32 index, |
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_MonitorEntry::entry_status status) |
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{ |
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AutoMutex autoEntryMutex(_entry_mut); |
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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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void Monitor::run(Uint32 milliseconds) |
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{ |
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struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; |
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////************************* monitor 2 *****************************//// |
fd_set fdread; |
////************************* monitor 2 *****************************//// |
FD_ZERO(&fdread); |
////************************* monitor 2 *****************************//// |
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////************************* monitor 2 *****************************//// |
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////************************* monitor 2 *****************************//// |
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////************************* monitor 2 *****************************//// |
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////************************* monitor 2 *****************************//// |
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AutoMutex autoEntryMutex(_entry_mut); |
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m2e_rep::m2e_rep(void) |
ArrayIterator<_MonitorEntry> entries(_entries); |
:Base(), state(IDLE) |
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// Check the stopConnections flag. If set, clear the Acceptor monitor |
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// entries |
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if (_stopConnections.get() == 1) |
{ | { |
} |
for ( int indx = 0; indx < (int)entries.size(); indx++) |
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m2e_rep::m2e_rep(monitor_2_entry_type _type, |
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pegasus_socket _sock, |
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void* _accept, |
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void* _dispatch) |
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: Base(), type(_type), state(IDLE), psock(_sock), |
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accept_parm(_accept), dispatch_parm(_dispatch) |
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{ | { |
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if (entries[indx]._type == Monitor::ACCEPTOR) |
} |
{ |
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if ( entries[indx]._status.get() != _MonitorEntry::EMPTY) |
m2e_rep::~m2e_rep(void) |
{ |
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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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// remove the entry |
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entries[indx]._status = _MonitorEntry::EMPTY; |
} | } |
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else |
m2e_rep::m2e_rep(const m2e_rep& r) |
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: Base() |
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{ | { |
if(this != &r){ |
// set status to DYING |
type = r.type; |
entries[indx]._status = _MonitorEntry::DYING; |
psock = r.psock; |
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accept_parm = r.accept_parm; |
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dispatch_parm = r.dispatch_parm; |
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state = IDLE; |
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} | } |
} | } |
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m2e_rep& m2e_rep::operator =(const m2e_rep& r) |
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{ |
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if(this != &r) { |
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type = r.type; |
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psock = r.psock; |
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accept_parm = r.accept_parm; |
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dispatch_parm = r.dispatch_parm; |
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state = IDLE; |
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} | } |
return *this; |
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} | } |
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_stopConnections = 0; |
Boolean m2e_rep::operator ==(const m2e_rep& r) |
_stopConnectionsSem.signal(); |
{ |
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if(this == &r) |
|
return true; |
|
return false; |
|
} | } |
| |
Boolean m2e_rep::operator ==(void* r) |
for (int indx = 0; indx < (int)entries.size(); indx++) |
{ | { |
if((void*)this == r) |
const _MonitorEntry &entry = entries[indx]; |
return true; |
if ((entry._status.get() == _MonitorEntry::DYING) && |
return false; |
(entry._type == Monitor::CONNECTION)) |
} |
|
|
|
m2e_rep::operator pegasus_socket() const |
|
{ | { |
return psock; |
MessageQueue *q = MessageQueue::lookup(entry.queueId); |
} |
PEGASUS_ASSERT(q != 0); |
|
HTTPConnection &h = *static_cast<HTTPConnection *>(q); |
| |
|
if (h._connectionClosePending == false) |
|
continue; |
| |
monitor_2_entry::monitor_2_entry(void) |
// NOTE: do not attempt to delete while there are pending responses |
{ |
// coming thru. The last response to come thru after a |
_rep = new m2e_rep(); |
// _connectionClosePending will reset _responsePending to false |
|
// and then cause the monitor to rerun this code and clean up. |
|
// (see HTTPConnection.cpp) |
|
|
|
if (h._responsePending == true) |
|
{ |
|
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run - Ignoring connection delete request " |
|
"because responses are still pending. " |
|
"connection=0x%p, socket=%d\n", |
|
(void *)&h, h.getSocket())); |
|
continue; |
} | } |
|
h._connectionClosePending = false; |
|
MessageQueue &o = h.get_owner(); |
|
Message* message= new CloseConnectionMessage(entry.socket); |
|
message->dest = o.getQueueId(); |
| |
monitor_2_entry::monitor_2_entry(pegasus_socket& _psock, |
// HTTPAcceptor is responsible for closing the connection. |
monitor_2_entry_type _type, |
// The lock is released to allow HTTPAcceptor to call |
void* _accept_parm, void* _dispatch_parm) |
// unsolicitSocketMessages to free the entry. |
{ |
// Once HTTPAcceptor completes processing of the close |
_rep = new m2e_rep(_type, _psock, _accept_parm, _dispatch_parm); |
// connection, the lock is re-requested and processing of |
} |
// the for loop continues. This is safe with the current |
|
// implementation of the entries object. Note that the |
|
// loop condition accesses the entries.size() on each |
|
// iteration, so that a change in size while the mutex is |
|
// unlocked will not result in an ArrayIndexOutOfBounds |
|
// exception. |
| |
monitor_2_entry::monitor_2_entry(const monitor_2_entry& e) |
_entry_mut.unlock(); |
{ |
o.enqueue(message); |
if(this != &e){ |
_entry_mut.lock(); |
Inc(this->_rep = e._rep); |
|
|
// After enqueue a message and the autoEntryMutex has been |
|
// released and locked again, the array of _entries can be |
|
// changed. The ArrayIterator has be reset with the original |
|
// _entries. |
|
entries.reset(_entries); |
} | } |
} | } |
| |
monitor_2_entry::~monitor_2_entry(void) |
Uint32 _idleEntries = 0; |
{ |
|
Dec(_rep); |
|
} |
|
| |
monitor_2_entry& monitor_2_entry::operator=(const monitor_2_entry& e) |
/* |
|
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. |
|
*/ |
|
SocketHandle maxSocketCurrentPass = 0; |
|
for (int indx = 0; indx < (int)entries.size(); indx++) |
{ | { |
if(this != &e){ |
if (maxSocketCurrentPass < entries[indx].socket) |
Dec(_rep); |
maxSocketCurrentPass = entries[indx].socket; |
Inc(this->_rep = e._rep); |
|
} |
|
return *this; |
|
} |
|
| |
Boolean monitor_2_entry::operator ==(const monitor_2_entry& me) const |
if (entries[indx]._status.get() == _MonitorEntry::IDLE) |
{ | { |
if(this == &me) |
_idleEntries++; |
return true; |
FD_SET(entries[indx].socket, &fdread); |
return false; |
|
} | } |
|
|
Boolean monitor_2_entry::operator ==(void* k) const |
|
{ |
|
if((void *)this == k) |
|
return true; |
|
return false; |
|
} | } |
| |
|
/* |
|
Add 1 then assign maxSocket accordingly. We add 1 to account for |
|
descriptors starting at 0. |
|
*/ |
|
maxSocketCurrentPass++; |
| |
monitor_2_entry_type monitor_2_entry::get_type(void) const |
_entry_mut.unlock(); |
{ |
|
return _rep->type; |
|
} |
|
| |
void monitor_2_entry::set_type(monitor_2_entry_type t) |
// |
{ |
// The first argument to select() is ignored on Windows and it is not |
_rep->type = t; |
// a socket value. The original code assumed that the number of sockets |
} |
// and a socket value have the same type. On Windows they do not. |
|
// |
|
#ifdef PEGASUS_OS_TYPE_WINDOWS |
|
int events = select(0, &fdread, NULL, NULL, &tv); |
|
#else |
|
int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv); |
|
#endif |
|
_entry_mut.lock(); |
| |
|
// After enqueue a message and the autoEntryMutex has been released and |
|
// locked again, the array of _entries can be changed. The ArrayIterator |
|
// has be reset with the original _entries |
|
entries.reset(_entries); |
|
|
|
if (events == PEGASUS_SOCKET_ERROR) |
|
{ |
|
PEG_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. |
|
|
|
PEGASUS_ASSERT(errno != EBADF); |
|
} |
|
else if (events) |
|
{ |
|
PEG_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))) |
|
{ |
|
MessageQueue *q = MessageQueue::lookup(entries[indx].queueId); |
|
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run indx = %d, queueId = %d, q = %p", |
|
indx, entries[indx].queueId, q)); |
|
PEGASUS_ASSERT(q !=0); |
| |
monitor_2_entry_state monitor_2_entry::get_state(void) const |
try |
{ | { |
return (monitor_2_entry_state) _rep->state.value(); |
if (entries[indx]._type == Monitor::CONNECTION) |
} |
|
|
|
void monitor_2_entry::set_state(monitor_2_entry_state t) |
|
{ | { |
_rep->state = t; |
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"entries[indx].type for indx = %d is " |
|
"Monitor::CONNECTION", |
|
indx)); |
|
static_cast<HTTPConnection *>(q)->_entry_index = indx; |
|
|
|
// 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)) |
|
{ |
|
PEG_TRACE_CSTRING(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); |
|
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: entering run() for " |
|
"indx = %d, queueId = %d, q = %p", |
|
dst->_entry_index, |
|
dst->_monitor->_entries[dst->_entry_index].queueId, |
|
dst)); |
| |
void* monitor_2_entry::get_accept(void) const |
try |
{ | { |
return _rep->accept_parm; |
dst->run(1); |
} | } |
|
catch (...) |
void monitor_2_entry::set_accept(void* a) |
|
{ | { |
_rep->accept_parm = a; |
PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exception received"); |
} | } |
|
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exited run() for index %d", |
|
dst->_entry_index)); |
|
|
|
// 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 = _MonitorEntry::BUSY; |
|
static char buffer[2]; |
|
Sint32 amt = |
|
Socket::read(entries[indx].socket,&buffer, 2); |
| |
void* monitor_2_entry::get_dispatch(void) const |
if (amt == PEGASUS_SOCKET_ERROR && |
|
getSocketError() == PEGASUS_NETWORK_TCPIP_STOPPED) |
{ | { |
return _rep->dispatch_parm; |
PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::run: Tickler socket got an IO error. " |
|
"Going to re-create Socket and wait for " |
|
"TCP/IP restart."); |
|
_tickler.uninitialize(); |
|
initializeTickler(); |
} | } |
|
else |
void monitor_2_entry::set_dispatch(void* a) |
|
{ | { |
_rep->dispatch_parm = a; |
entries[indx]._status = _MonitorEntry::IDLE; |
} | } |
|
|
pegasus_socket monitor_2_entry::get_sock(void) const |
|
{ |
|
return _rep->psock; |
|
} | } |
|
else |
|
|
void monitor_2_entry::set_sock(pegasus_socket& s) |
|
{ | { |
_rep->psock = s; |
PEG_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; |
|
_entry_mut.unlock(); |
|
q->enqueue(msg); |
|
_entry_mut.lock(); |
| |
|
// After enqueue a message and the autoEntryMutex has |
|
// been released and locked again, the array of |
|
// entries can be changed. The ArrayIterator has be |
|
// reset with the original _entries |
|
entries.reset(_entries); |
|
entries[indx]._status = _MonitorEntry::IDLE; |
} | } |
|
} |
|
catch (...) |
monitor_2::monitor_2(void) |
|
: _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0), |
|
_ready(true), _die(0), _requestCount(0) |
|
{ | { |
try { |
|
|
|
bsd_socket_factory _factory; |
|
|
|
// set up the listener/acceptor |
|
pegasus_socket temp = pegasus_socket(&_factory); |
|
|
|
temp.socket(PF_INET, SOCK_STREAM, 0); |
|
// initialize the address |
|
memset(&_tickle_addr, 0, sizeof(_tickle_addr)); |
|
_tickle_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
|
_tickle_addr.sin_family = PF_INET; |
|
_tickle_addr.sin_port = 0; |
|
|
|
PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_addr); |
|
|
|
temp.bind((struct sockaddr *)&_tickle_addr, sizeof(_tickle_addr)); |
|
temp.listen(3); |
|
temp.getsockname((struct sockaddr*)&_tickle_addr, &_addr_size); |
|
|
|
// set up the connector |
|
|
|
pegasus_socket tickler = pegasus_socket(&_factory); |
|
tickler.socket(PF_INET, SOCK_STREAM, 0); |
|
struct sockaddr_in _addr; |
|
memset(&_addr, 0, sizeof(_addr)); |
|
_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
|
_addr.sin_family = PF_INET; |
|
_addr.sin_port = 0; |
|
tickler.bind((struct sockaddr*)&_addr, sizeof(_addr)); |
|
tickler.connect((struct sockaddr*)&_tickle_addr, sizeof(_tickle_addr)); |
|
|
|
_tickler.set_sock(tickler); |
|
_tickler.set_type(INTERNAL); |
|
_tickler.set_state(BUSY); |
|
|
|
struct sockaddr_in peer; |
|
memset(&peer, 0, sizeof(peer)); |
|
PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); |
|
|
|
pegasus_socket accepted = temp.accept((struct sockaddr*)&peer, &peer_size); |
|
monitor_2_entry* _tickle = new monitor_2_entry(accepted, INTERNAL, 0, 0); |
|
_tickle->set_state(BUSY); |
|
|
|
_listeners.insert_first(_tickle); |
|
|
|
} | } |
catch(...){ } |
|
} | } |
|
|
monitor_2::~monitor_2(void) |
|
{ |
|
try { |
|
monitor_2_entry* temp = _listeners.remove_first(); |
|
while(temp){ |
|
delete temp; |
|
temp = _listeners.remove_first(); |
|
} | } |
} | } |
catch(...){ } |
|
} | } |
| |
|
void Monitor::stopListeningForConnections(Boolean wait) |
void monitor_2::run(void) |
|
{ | { |
monitor_2_entry* temp; |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()"); |
while(_die.value() == 0) { |
// set boolean then tickle the server to recognize _stopConnections |
struct timeval tv = {0, 0}; |
_stopConnections = 1; |
|
tickle(); |
| |
// place all sockets in the select set |
if (wait) |
FD_ZERO(&rd_fd_set); |
{ |
try { |
// Wait for the monitor to notice _stopConnections. Otherwise the |
_listeners.lock(pegasus_thread_self()); |
// caller of this function may unbind the ports while the monitor |
temp = _listeners.next(0); |
// is still accepting connections on them. |
while(temp != 0 ){ |
_stopConnectionsSem.wait(); |
if(temp->get_state() == CLOSED ){ |
|
monitor_2_entry* closed = temp; |
|
temp = _listeners.next(closed); |
|
_listeners.remove_no_lock(closed); |
|
delete closed; |
|
} | } |
FD_SET((Sint32) temp->get_sock() , &rd_fd_set); |
|
temp = _listeners.next(temp); |
PEG_METHOD_EXIT(); |
} | } |
_listeners.unlock(); |
|
|
|
|
int Monitor::solicitSocketMessages( |
|
SocketHandle 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); |
} | } |
catch(...){ |
|
return; |
|
} | } |
// 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. |
|
| |
int events = select(FD_SETSIZE, &rd_fd_set, NULL, NULL, NULL); |
int index; |
try { |
for (index = 1; index < (int)_entries.size(); index++) |
_listeners.lock(pegasus_thread_self()); |
{ |
temp = _listeners.next(0); |
try |
while(temp != 0 ){ |
{ |
Sint32 fd = (Sint32) temp->get_sock(); |
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(FD_ISSET(fd, &rd_fd_set)) { |
return index; |
temp->set_state(BUSY); |
|
FD_CLR(fd, &rd_fd_set); |
|
monitor_2_entry* ready = new monitor_2_entry(*temp); |
|
_ready.insert_first((void*)ready); |
|
_requestCount++; |
|
} | } |
temp = _listeners.next(temp); |
|
} | } |
_listeners.unlock(); |
catch (...) |
|
{ |
} | } |
catch(...){ |
|
return; |
|
} | } |
// now handle the sockets that are ready to read |
// decrease the count, if we are here we didn't do anything meaningful |
_dispatch(); |
_solicitSocketCount--; |
} // while alive |
PEG_METHOD_EXIT(); |
|
return -1; |
} | } |
| |
void* monitor_2::set_session_dispatch(void (*dp)(monitor_2_entry*)) |
void Monitor::unsolicitSocketMessages(SocketHandle socket) |
{ | { |
void* old = (void *)_session_dispatch; |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::unsolicitSocketMessages"); |
_session_dispatch = dp; |
AutoMutex autoMut(_entry_mut); |
return old; |
|
} |
|
| |
void* monitor_2::set_accept_dispatch(void (*dp)(monitor_2_entry*)) |
/* |
|
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++) |
{ | { |
void* old = (void*)_accept_dispatch; |
if (_entries[index].socket == socket) |
_accept_dispatch = dp; |
|
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. |
|
void monitor_2::_dispatch(void) |
|
{ | { |
monitor_2_entry* entry = (monitor_2_entry*) _ready.remove_first(); |
_entries[index]._status = _MonitorEntry::EMPTY; |
while(entry != 0 ){ |
_entries[index].socket = PEGASUS_INVALID_SOCKET; |
switch(entry->get_type()) { |
_solicitSocketCount--; |
case INTERNAL: |
|
static char buffer[2]; |
|
entry->get_sock().read(&buffer, 2); |
|
break; | break; |
case LISTEN: |
|
{ |
|
static struct sockaddr peer; |
|
static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); |
|
pegasus_socket connected = entry->get_sock().accept(&peer, &peer_size); |
|
monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch()); |
|
if(temp && _accept_dispatch != 0) |
|
_accept_dispatch(temp); |
|
} | } |
break; |
|
case SESSION: |
|
if(_session_dispatch != 0 ) |
|
_session_dispatch(entry); |
|
else { |
|
static char buffer[4096]; |
|
int bytes = entry->get_sock().read(&buffer, 4096); |
|
} | } |
| |
break; |
/* |
case UNTYPED: |
Dynamic Contraction: |
default: |
To remove excess entries we will start from the end of the _entries |
break; |
array and remove all entries with EMPTY status until we find the |
} |
first NON EMPTY. This prevents the positions, of the NON EMPTY |
_requestCount--; |
entries, from being changed. |
delete entry; |
*/ |
entry = (monitor_2_entry*) _ready.remove_first(); |
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(); |
} | } |
| |
void monitor_2::stop(void) |
// Note: this is no longer called with PEP 183. |
|
ThreadReturnType PEGASUS_THREAD_CDECL Monitor::_dispatch(void* parm) |
{ | { |
_die = 1; |
HTTPConnection *dst = reinterpret_cast<HTTPConnection *>(parm); |
tickle(); |
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: entering run() for indx = %d, queueId = %d, " |
// shut down the listener list, free the list nodes |
"q = %p", |
_tickler.get_sock().close(); |
dst->_entry_index, |
_listeners.shutdown_queue(); |
dst->_monitor->_entries[dst->_entry_index].queueId, |
} |
dst)); |
| |
void monitor_2::tickle(void) |
try |
{ | { |
static char _buffer[] = |
dst->run(1); |
|
} |
|
catch (...) |
{ | { |
'0','0' |
PEG_TRACE_CSTRING(TRC_HTTP, Tracer::LEVEL4, |
}; |
"Monitor::_dispatch: exception received"); |
|
|
_tickler.get_sock().write(&_buffer, 2); |
|
} | } |
|
PEG_TRACE((TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exited run() for index %d", dst->_entry_index)); |
| |
|
PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.get() == |
|
_MonitorEntry::BUSY); |
| |
monitor_2_entry* monitor_2::add_entry(pegasus_socket& ps, |
// Once the HTTPConnection thread has set the status value to either |
monitor_2_entry_type type, |
// Monitor::DYING or Monitor::IDLE, it has returned control of the |
void* accept_parm, |
// connection to the Monitor. It is no longer permissible to access the |
void* dispatch_parm) |
// connection or the entry in the _entries table. |
|
if (dst->_connectionClosePending) |
{ | { |
monitor_2_entry* m2e = new monitor_2_entry(ps, type, accept_parm, dispatch_parm); |
dst->_monitor->_entries[dst->_entry_index]._status = |
|
_MonitorEntry::DYING; |
try{ |
|
_listeners.insert_first(m2e); |
|
} |
|
catch(...){ |
|
delete m2e; |
|
return 0; |
|
} | } |
tickle(); |
else |
return m2e; |
|
} |
|
|
|
Boolean monitor_2::remove_entry(Sint32 s) |
|
{ | { |
monitor_2_entry* temp; |
dst->_monitor->_entries[dst->_entry_index]._status = |
try { |
_MonitorEntry::IDLE; |
_listeners.try_lock(pegasus_thread_self()); |
|
temp = _listeners.next(0); |
|
while(temp != 0){ |
|
if(s == (Sint32)temp->_rep->psock ){ |
|
temp = _listeners.remove_no_lock(temp); |
|
delete temp; |
|
_listeners.unlock(); |
|
return true; |
|
} | } |
temp = _listeners.next(temp); |
return 0; |
} |
|
_listeners.unlock(); |
|
} |
|
catch(...){ |
|
} |
|
return false; |
|
} |
|
|
|
Uint32 monitor_2::getOutstandingRequestCount(void) |
|
{ |
|
return _requestCount.value(); |
|
|
|
} | } |
| |
|
|
PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |