version 1.32.2.4, 2002/10/30 21:20:05
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version 1.76, 2004/09/30 16:41:29
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//%///////////////////////////////////////////////////////////////////////////// |
//%2003//////////////////////////////////////////////////////////////////////// |
// | // |
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM, |
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Development |
// The Open Group, Tivoli Systems |
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems. |
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// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.; |
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// IBM Corp.; EMC Corporation, The Open Group. |
// | // |
// Permission is hereby granted, free of charge, to any person obtaining a copy | // Permission is hereby granted, free of charge, to any person obtaining a copy |
// of this software and associated documentation files (the "Software"), to | // of this software and associated documentation files (the "Software"), to |
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// | // |
// Author: Mike Brasher (mbrasher@bmc.com) | // Author: Mike Brasher (mbrasher@bmc.com) |
// | // |
// Modified By: |
// Modified By: Mike Day (monitor_2) mdday@us.ibm.com |
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// Amit K Arora (Bug#1153) amita@in.ibm.com |
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// Alagaraja Ramasubramanian (alags_raj@in.ibm.com) for Bug#1090 |
// | // |
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
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#include <Pegasus/Common/Config.h> |
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#include <cstring> |
#include "Monitor.h" | #include "Monitor.h" |
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#include "MessageQueue.h" |
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#include "Socket.h" |
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#include <Pegasus/Common/Tracer.h> |
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#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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# include <netinet/in.h> | # include <netinet/in.h> |
# include <netdb.h> | # include <netdb.h> |
# include <arpa/inet.h> | # include <arpa/inet.h> |
# include <unistd.h> |
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#endif | #endif |
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PEGASUS_USING_STD; | PEGASUS_USING_STD; |
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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 = {15, 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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//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
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// | // |
//////////////////////////////////////////////////////////////////////////////// | //////////////////////////////////////////////////////////////////////////////// |
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#define MAX_NUMBER_OF_MONITOR_ENTRIES 32 |
Monitor::Monitor() | Monitor::Monitor() |
: _async(false) |
: _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(0), |
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_tickle_server_socket(0), |
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_tickle_peer_socket(0) |
{ | { |
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int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
Socket::initializeInterface(); | Socket::initializeInterface(); |
_rep = 0; | _rep = 0; |
_entries.reserveCapacity(32); |
_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
int i = 0; |
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for( ; i < 32; i++ ) |
// 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) |
: _async(async) |
: _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(0), |
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_tickle_server_socket(0), |
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_tickle_peer_socket(0) |
{ | { |
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int numberOfMonitorEntriesToAllocate = MAX_NUMBER_OF_MONITOR_ENTRIES; |
Socket::initializeInterface(); | Socket::initializeInterface(); |
_rep = 0; | _rep = 0; |
_entries.reserveCapacity(32); |
_entries.reserveCapacity(numberOfMonitorEntriesToAllocate); |
int i = 0; |
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for( ; 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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if( _async == true ) |
// 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++ ) |
{ | { |
_thread_pool = new ThreadPool(0, |
_MonitorEntry entry(0, 0, 0); |
"Monitor", |
_entries.append(entry); |
1, |
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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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} | } |
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, | Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
"deregistering with module controller"); | "deregistering with module controller"); |
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if(_module_handle != NULL) |
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{ |
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_controller->deregister_module(PEGASUS_MODULENAME_MONITOR); |
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_controller = 0; |
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delete _module_handle; |
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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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// initialize the address |
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memset(&_tickle_server_addr, 0, sizeof(_tickle_server_addr)); |
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#ifdef PEGASUS_OS_ZOS |
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_tickle_server_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
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#else |
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#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(37) |
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#endif |
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_tickle_server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
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#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
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#pragma convert(0) |
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#endif |
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#endif |
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_tickle_server_addr.sin_family = PF_INET; |
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_tickle_server_addr.sin_port = 0; |
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int Monitor::kill_idle_threads() |
PEGASUS_SOCKLEN_SIZE _addr_size = sizeof(_tickle_server_addr); |
{ |
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static struct timeval now, last; |
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gettimeofday(&now, NULL); |
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int dead_threads = 0; |
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if( now.tv_sec - last.tv_sec > 300 ) |
// bind server side to socket |
{ |
if((::bind(_tickle_server_socket, |
PEGASUS_STD(cout) << "Monitor Thread Pool currently has " << |
(struct sockaddr *)&_tickle_server_addr, |
_thread_pool->running_count() + |
sizeof(_tickle_server_addr))) < 0){ |
_thread_pool->pool_count() << " Threads." << PEGASUS_STD(endl); |
// handle error |
gettimeofday(&last, NULL); |
MessageLoaderParms parms("Common.Monitor.TICKLE_BIND", |
try |
"Received error number $0 while binding the internal socket.", |
{ |
#if !defined(PEGASUS_OS_TYPE_WINDOWS) |
dead_threads = _thread_pool->kill_dead_threads(); |
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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} |
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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); |
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} |
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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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} |
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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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/* 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 |
} | } |
return dead_threads; |
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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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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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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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; |
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struct timeval tv = {0,1}; |
struct timeval tv = {milliseconds/1000, milliseconds%1000*1000}; |
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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()); |
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// Check the stopConnections flag. If set, clear the Acceptor monitor entries |
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if (_stopConnections == 1) |
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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 (_entries[indx]._type == Monitor::ACCEPTOR) |
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{ |
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if ( _entries[indx]._status.value() != _MonitorEntry::EMPTY) |
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{ |
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if ( _entries[indx]._status.value() == _MonitorEntry::IDLE || |
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_entries[indx]._status.value() == _MonitorEntry::DYING ) |
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{ |
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// remove the entry |
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_entries[indx]._status = _MonitorEntry::EMPTY; |
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} |
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else |
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{ |
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// set status to DYING |
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_entries[indx]._status = _MonitorEntry::DYING; |
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} |
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} |
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} |
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} |
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_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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if ((_entries[indx]._status.value() == _MonitorEntry::DYING) && |
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(_entries[indx]._type == Monitor::CONNECTION)) |
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{ |
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MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); |
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PEGASUS_ASSERT(q != 0); |
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MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner(); |
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Message* message= new CloseConnectionMessage(_entries[indx].socket); |
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message->dest = o.getQueueId(); |
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// HTTPAcceptor is responsible for closing the connection. |
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// The lock is released to allow HTTPAcceptor to call |
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// unsolicitSocketMessages to free the entry. |
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// Once HTTPAcceptor completes processing of the close |
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// connection, the lock is re-requested and processing of |
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// the for loop continues. This is safe with the current |
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// implementation of the _entries object. Note that the |
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// loop condition accesses the _entries.size() on each |
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// iteration, so that a change in size while the mutex is |
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// unlocked will not result in an ArrayIndexOutOfBounds |
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// exception. |
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_entry_mut.unlock(); |
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o.enqueue(message); |
_entry_mut.lock(pegasus_thread_self()); | _entry_mut.lock(pegasus_thread_self()); |
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} |
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} |
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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) |
{ | { |
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_idleEntries++; |
FD_SET(_entries[indx].socket, &fdread); | FD_SET(_entries[indx].socket, &fdread); |
} | } |
} | } |
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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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int events = select(FD_SETSIZE, &fdread, NULL, NULL, &tv); |
_entry_mut.unlock(); |
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int events = select(maxSocketCurrentPass, &fdread, NULL, NULL, &tv); |
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_entry_mut.lock(pegasus_thread_self()); |
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#ifdef PEGASUS_OS_TYPE_WINDOWS | #ifdef PEGASUS_OS_TYPE_WINDOWS |
if(events && events != SOCKET_ERROR ) |
if(events == SOCKET_ERROR) |
#else | #else |
if(events && events != -1 ) |
if(events == -1) |
#endif | #endif |
{ | { |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::run - errorno = %d has occurred on select.", errno); |
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// The EBADF error indicates that one or more or the file |
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// descriptions was not valid. This could indicate that |
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// the _entries structure has been corrupted or that |
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// we have a synchronization error. |
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|
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PEGASUS_ASSERT(errno != EBADF); |
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} |
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else if (events) |
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{ |
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Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"Monitor::run select event received events = %d, monitoring %d idle entries", |
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events, _idleEntries); |
for( int indx = 0; indx < (int)_entries.size(); indx++) | for( int indx = 0; indx < (int)_entries.size(); indx++) |
{ | { |
if(FD_ISSET(_entries[indx].socket, &fdread)) |
// The Monitor should only look at entries in the table that are IDLE (i.e., |
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// owned by the Monitor). |
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if((_entries[indx]._status.value() == _MonitorEntry::IDLE) && |
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(FD_ISSET(_entries[indx].socket, &fdread))) |
{ | { |
MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); | MessageQueue *q = MessageQueue::lookup(_entries[indx].queueId); |
if(q == 0) |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
{ |
"Monitor::run indx = %d, queueId = %d, q = %p", |
PEGASUS_STD(cout) << "Monitor:: found an empty connection slot" << PEGASUS_STD(endl); |
indx, _entries[indx].queueId, q); |
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PEGASUS_ASSERT(q !=0); |
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try | try |
{ | { |
_entries[indx]._status = _MonitorEntry::EMPTY; |
if(_entries[indx]._type == Monitor::CONNECTION) |
} |
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catch(...) |
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{ | { |
} |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
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"_entries[indx].type for indx = %d is Monitor::CONNECTION", indx); |
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static_cast<HTTPConnection *>(q)->_entry_index = indx; |
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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)) |
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{ |
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Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2, |
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"Monitor::run: Insufficient resources to process request."); |
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_entries[indx]._status = _MonitorEntry::IDLE; |
_entry_mut.unlock(); | _entry_mut.unlock(); |
return true; | return true; |
} | } |
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*/ |
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// 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", |
|
dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst); |
try | try |
{ | { |
if(_entries[indx]._type == Monitor::CONNECTION) |
dst->run(1); |
|
} |
|
catch (...) |
{ | { |
static_cast<HTTPConnection *>(q)->_entry_index = indx; |
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
if(static_cast<HTTPConnection *>(q)->_dying.value() > 0 ) |
"Monitor::_dispatch: exception received"); |
|
} |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exited run() for index %d", dst->_entry_index); |
|
|
|
PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _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. |
|
if (dst->_connectionClosePending) |
{ | { |
_entries[indx]._status = _MonitorEntry::DYING; |
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING; |
MessageQueue & o = static_cast<HTTPConnection *>(q)->get_owner(); |
|
Message* message= new CloseConnectionMessage(_entries[indx].socket); |
|
message->dest = o.getQueueId(); |
|
_entry_mut.unlock(); |
|
o.enqueue(message); |
|
return true; |
|
} | } |
_entries[indx]._status = _MonitorEntry::BUSY; |
else |
_thread_pool->allocate_and_awaken((void *)q, _dispatch); |
{ |
|
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 |
{ | { |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Non-connection entry, indx = %d, has been received.", indx); |
int events = 0; | int events = 0; |
events |= SocketMessage::READ; | events |= SocketMessage::READ; |
Message *msg = new SocketMessage(_entries[indx].socket, events); | Message *msg = new SocketMessage(_entries[indx].socket, events); |
_entries[indx]._status = _MonitorEntry::BUSY; | _entries[indx]._status = _MonitorEntry::BUSY; |
_entry_mut.unlock(); | _entry_mut.unlock(); |
|
|
q->enqueue(msg); | q->enqueue(msg); |
_entries[indx]._status = _MonitorEntry::IDLE; | _entries[indx]._status = _MonitorEntry::IDLE; |
return true; | return true; |
|
|
return(handled_events); | return(handled_events); |
} | } |
| |
|
void Monitor::stopListeningForConnections(Boolean wait) |
|
{ |
|
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::stopListeningForConnections()"); |
|
// set boolean then tickle the server to recognize _stopConnections |
|
_stopConnections = 1; |
|
tickle(); |
|
|
|
if (wait) |
|
{ |
|
// 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(); |
|
} |
|
|
| |
int Monitor::solicitSocketMessages( | int Monitor::solicitSocketMessages( |
Sint32 socket, | Sint32 socket, |
|
|
Uint32 queueId, | Uint32 queueId, |
int type) | 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(_solicitSocketCount >= (size-1)){ |
|
for(int i = 0; i < (_solicitSocketCount - (size-1)); i++){ |
|
_MonitorEntry entry(0, 0, 0); |
|
_entries.append(entry); |
|
} |
|
} |
| |
PEG_METHOD_ENTER(TRC_HTTP, "Monitor::solictSocketMessage"); |
int index; |
|
for(index = 1; index < (int)_entries.size(); index++) |
int index = -1; |
|
_entry_mut.lock(pegasus_thread_self()); |
|
|
|
for(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 index; |
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; |
|
_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(); |
if( _async == true ) |
|
PEGASUS_STD(cout) << "Monitor:: running " << _thread_pool->running_count() << |
|
" idle " << _thread_pool->pool_count() << PEGASUS_STD(endl); |
|
|
|
} | } |
| |
|
// 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, |
|
"Monitor::_dispatch: entering run() for indx = %d, queueId = %d, q = %p", |
|
dst->_entry_index, dst->_monitor->_entries[dst->_entry_index].queueId, dst); |
|
try |
|
{ |
dst->run(1); | dst->run(1); |
if( dst->_monitor->_entries.size() > (Uint32)dst->_entry_index ) |
} |
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
catch (...) |
|
{ |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exception received"); |
|
} |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"Monitor::_dispatch: exited run() for index %d", dst->_entry_index); |
|
|
|
PEGASUS_ASSERT(dst->_monitor->_entries[dst->_entry_index]._status.value() == _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. |
|
if (dst->_connectionClosePending) |
|
{ |
|
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::DYING; |
|
} |
|
else |
|
{ |
|
dst->_monitor->_entries[dst->_entry_index]._status = _MonitorEntry::IDLE; |
|
} |
return 0; | return 0; |
} | } |
| |
| |
|
|
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
////************************* monitor 2 *****************************//// |
|
|
|
|
|
|
|
|
|
|
|
m2e_rep::m2e_rep(void) |
|
:Base(), state(IDLE) |
|
|
|
{ |
|
} |
|
|
|
m2e_rep::m2e_rep(monitor_2_entry_type _type, |
|
pegasus_socket _sock, |
|
void* _accept, |
|
void* _dispatch) |
|
: Base(), type(_type), state(IDLE), psock(_sock), |
|
accept_parm(_accept), dispatch_parm(_dispatch) |
|
{ |
|
|
|
} |
|
|
|
m2e_rep::~m2e_rep(void) |
|
{ |
|
} |
|
|
|
m2e_rep::m2e_rep(const m2e_rep& r) |
|
: Base() |
|
{ |
|
if(this != &r){ |
|
type = r.type; |
|
psock = r.psock; |
|
accept_parm = r.accept_parm; |
|
dispatch_parm = r.dispatch_parm; |
|
state = IDLE; |
|
|
|
} |
|
} |
|
|
|
|
|
m2e_rep& m2e_rep::operator =(const m2e_rep& r) |
|
{ |
|
if(this != &r) { |
|
type = r.type; |
|
psock = r.psock; |
|
accept_parm = r.accept_parm; |
|
dispatch_parm = r.dispatch_parm; |
|
state = IDLE; |
|
} |
|
return *this; |
|
} |
|
|
|
Boolean m2e_rep::operator ==(const m2e_rep& r) |
|
{ |
|
if(this == &r) |
|
return true; |
|
return false; |
|
} |
|
|
|
Boolean m2e_rep::operator ==(void* r) |
|
{ |
|
if((void*)this == r) |
|
return true; |
|
return false; |
|
} |
|
|
|
m2e_rep::operator pegasus_socket() const |
|
{ |
|
return psock; |
|
} |
|
|
|
|
|
monitor_2_entry::monitor_2_entry(void) |
|
{ |
|
_rep = new m2e_rep(); |
|
} |
|
|
|
monitor_2_entry::monitor_2_entry(pegasus_socket& _psock, |
|
monitor_2_entry_type _type, |
|
void* _accept_parm, void* _dispatch_parm) |
|
{ |
|
_rep = new m2e_rep(_type, _psock, _accept_parm, _dispatch_parm); |
|
} |
|
|
|
monitor_2_entry::monitor_2_entry(const monitor_2_entry& e) |
|
{ |
|
if(this != &e){ |
|
Inc(this->_rep = e._rep); |
|
} |
|
} |
|
|
|
monitor_2_entry::~monitor_2_entry(void) |
|
{ |
|
|
|
Dec(_rep); |
|
} |
|
|
|
monitor_2_entry& monitor_2_entry::operator=(const monitor_2_entry& e) |
|
{ |
|
if(this != &e){ |
|
Dec(_rep); |
|
Inc(this->_rep = e._rep); |
|
} |
|
return *this; |
|
} |
|
|
|
Boolean monitor_2_entry::operator ==(const monitor_2_entry& me) const |
|
{ |
|
if(this == &me) |
|
return true; |
|
return false; |
|
} |
|
|
|
Boolean monitor_2_entry::operator ==(void* k) const |
|
{ |
|
if((void *)this == k) |
|
return true; |
|
return false; |
|
} |
|
|
|
|
|
monitor_2_entry_type monitor_2_entry::get_type(void) const |
|
{ |
|
return _rep->type; |
|
} |
|
|
|
void monitor_2_entry::set_type(monitor_2_entry_type t) |
|
{ |
|
_rep->type = t; |
|
} |
|
|
|
|
|
monitor_2_entry_state monitor_2_entry::get_state(void) const |
|
{ |
|
return (monitor_2_entry_state) _rep->state.value(); |
|
} |
|
|
|
void monitor_2_entry::set_state(monitor_2_entry_state t) |
|
{ |
|
_rep->state = t; |
|
} |
|
|
|
void* monitor_2_entry::get_accept(void) const |
|
{ |
|
return _rep->accept_parm; |
|
} |
|
|
|
void monitor_2_entry::set_accept(void* a) |
|
{ |
|
_rep->accept_parm = a; |
|
} |
|
|
|
|
|
void* monitor_2_entry::get_dispatch(void) const |
|
{ |
|
return _rep->dispatch_parm; |
|
} |
|
|
|
void monitor_2_entry::set_dispatch(void* a) |
|
{ |
|
_rep->dispatch_parm = a; |
|
} |
|
|
|
pegasus_socket monitor_2_entry::get_sock(void) const |
|
{ |
|
return _rep->psock; |
|
} |
|
|
|
|
|
void monitor_2_entry::set_sock(pegasus_socket& s) |
|
{ |
|
_rep->psock = s; |
|
|
|
} |
|
|
|
//static monitor_2* _m2_instance; |
|
|
|
AsyncDQueue<HTTPConnection2> monitor_2::_connections(true, 0); |
|
|
|
monitor_2::monitor_2(void) |
|
: _session_dispatch(0), _accept_dispatch(0), _listeners(true, 0), |
|
_ready(true, 0), _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)); |
|
#ifdef PEGASUS_OS_ZOS |
|
_tickle_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
|
#else |
|
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
|
#pragma convert(37) |
|
#endif |
|
_tickle_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
|
#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM |
|
#pragma convert(0) |
|
#endif |
|
#endif |
|
_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)); |
|
#ifdef PEGASUS_OS_ZOS |
|
_addr.sin_addr.s_addr = inet_addr_ebcdic("127.0.0.1"); |
|
#else |
|
_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
|
#endif |
|
_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); |
|
|
|
// 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); |
|
|
|
} |
|
catch(...){ } |
|
} |
|
|
|
monitor_2::~monitor_2(void) |
|
{ |
|
|
|
stop(); |
|
|
|
try { |
|
monitor_2_entry* temp = _listeners.remove_first(); |
|
while(temp){ |
|
delete temp; |
|
temp = _listeners.remove_first(); |
|
} |
|
} |
|
|
|
catch(...){ } |
|
|
|
|
|
try |
|
{ |
|
HTTPConnection2* temp = _connections.remove_first(); |
|
while(temp) |
|
{ |
|
delete temp; |
|
temp = _connections.remove_first(); |
|
} |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
|
|
} |
|
|
|
|
|
void monitor_2::run(void) |
|
{ |
|
monitor_2_entry* temp; |
|
int _nonIdle=0, _idleCount=0, events; |
|
|
|
while(_die.value() == 0) { |
|
_nonIdle=_idleCount=0; |
|
|
|
struct timeval tv_idle = { 60, 0 }; |
|
|
|
// place all sockets in the select set |
|
FD_ZERO(&rd_fd_set); |
|
try { |
|
_listeners.lock(pegasus_thread_self()); |
|
temp = _listeners.next(0); |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::run:Creating New FD list for SELECT."); |
|
while(temp != 0 ){ |
|
if(temp->get_state() == CLOSED ) { |
|
monitor_2_entry* closed = temp; |
|
temp = _listeners.next(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())); |
|
delete cn; |
|
delete closed; |
|
} |
|
if(temp == 0) |
|
break; |
|
|
|
|
|
//Count the number if IDLE sockets |
|
if(temp->get_state() != IDLE ) _nonIdle++; |
|
else _idleCount++; |
|
|
|
Sint32 fd = (Sint32) temp->get_sock(); |
|
|
|
//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); |
|
} |
|
temp = _listeners.next(temp); |
|
} |
|
_listeners.unlock(); |
|
} |
|
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. |
|
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); |
|
|
|
|
|
try { |
|
_listeners.lock(pegasus_thread_self()); |
|
temp = _listeners.next(0); |
|
while(temp != 0 ){ |
|
Sint32 fd = (Sint32) temp->get_sock(); |
|
if(fd >= 0 && FD_ISSET(fd, &rd_fd_set)) { |
|
if(temp->get_type() != CLIENTSESSION) temp->set_state(BUSY); |
|
FD_CLR(fd, &rd_fd_set); |
|
monitor_2_entry* ready = new monitor_2_entry(*temp); |
|
try |
|
{ |
|
_ready.insert_first(ready); |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
_requestCount++; |
|
} |
|
temp = _listeners.next(temp); |
|
} |
|
_listeners.unlock(); |
|
} |
|
catch(...){ |
|
return; |
|
} |
|
// now handle the sockets that are ready to read |
|
if(_ready.count()) |
|
_dispatch(); |
|
else |
|
{ |
|
if(_connections.count() == 0 ) |
|
_idle_dispatch(_idle_parm); |
|
} |
|
} // if events |
|
} // 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* old = (void *)_session_dispatch; |
|
_session_dispatch = dp; |
|
return old; |
|
} |
|
|
|
void* monitor_2::set_accept_dispatch(void (*dp)(monitor_2_entry*)) |
|
{ |
|
void* old = (void*)_accept_dispatch; |
|
_accept_dispatch = dp; |
|
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; |
|
} |
|
|
|
|
|
|
|
//----------------------------------------------------------------- |
|
// 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) |
|
{ |
|
monitor_2_entry* entry; |
|
|
|
try |
|
{ |
|
|
|
entry = _ready.remove_first(); |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
while(entry != 0 ) { |
|
switch(entry->get_type()) { |
|
case INTERNAL: |
|
static char buffer[2]; |
|
entry->get_sock().disableBlocking(); |
|
entry->get_sock().read(&buffer, 2); |
|
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; |
|
case LISTEN: |
|
{ |
|
static struct sockaddr peer; |
|
static PEGASUS_SOCKLEN_SIZE peer_size = sizeof(peer); |
|
entry->get_sock().disableBlocking(); |
|
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(); |
|
monitor_2_entry *temp = add_entry(connected, SESSION, entry->get_accept(), entry->get_dispatch()); |
|
if(temp && _accept_dispatch != 0) |
|
_accept_dispatch(temp); |
|
delete entry; |
|
|
|
} |
|
break; |
|
case SESSION: |
|
case CLIENTSESSION: |
|
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); |
|
|
|
if(client) |
|
{ |
|
HTTPConnection2 *cn = monitor_2::remove_connection(sock); |
|
if(cn) delete cn; |
|
// stop(); |
|
_die=1; |
|
} |
|
} |
|
|
|
else { |
|
static char buffer[4096]; |
|
int bytes = entry->get_sock().read(&buffer, 4096); |
|
delete entry; |
|
} |
|
|
|
break; |
|
case UNTYPED: |
|
default: |
|
delete entry; |
|
break; |
|
} |
|
_requestCount--; |
|
|
|
if(_ready.count() == 0 ) |
|
break; |
|
|
|
try |
|
{ |
|
entry = _ready.remove_first(); |
|
} |
|
catch(...) |
|
{ |
|
} |
|
|
|
} |
|
} |
|
|
|
void monitor_2::stop(void) |
|
{ |
|
_die = 1; |
|
tickle(); |
|
// shut down the listener list, free the list nodes |
|
_tickler.get_sock().close(); |
|
_listeners.shutdown_queue(); |
|
} |
|
|
|
void monitor_2::tickle(void) |
|
{ |
|
static char _buffer[] = |
|
{ |
|
'0','0' |
|
}; |
|
|
|
_tickler.get_sock().disableBlocking(); |
|
|
|
_tickler.get_sock().write(&_buffer, 2); |
|
_tickler.get_sock().enableBlocking(); |
|
|
|
} |
|
|
|
|
|
monitor_2_entry* monitor_2::add_entry(pegasus_socket& ps, |
|
monitor_2_entry_type type, |
|
void* accept_parm, |
|
void* dispatch_parm) |
|
{ |
|
Sint32 fd1,fd2; |
|
|
|
fd2=(Sint32) ps; |
|
|
|
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{ |
|
_listeners.insert_first(m2e); |
|
} |
|
catch(...){ |
|
delete m2e; |
|
return 0; |
|
} |
|
Tracer::trace(TRC_HTTP, Tracer::LEVEL4, |
|
"monitor_2::add_entry:SUCCESSFULLY added to _listeners list. FD = %d.", fd2); |
|
tickle(); |
|
return m2e; |
|
} |
|
|
|
Boolean monitor_2::remove_entry(Sint32 s) |
|
{ |
|
monitor_2_entry* temp; |
|
try { |
|
_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); |
|
} |
|
_listeners.unlock(); |
|
} |
|
catch(...){ |
|
} |
|
return false; |
|
} |
|
|
|
Uint32 monitor_2::getOutstandingRequestCount(void) |
|
{ |
|
return _requestCount.value(); |
|
|
|
} |
|
|
|
|
|
HTTPConnection2* monitor_2::remove_connection(Sint32 sock) |
|
{ |
|
|
|
HTTPConnection2* temp; |
|
try |
|
{ |
|
monitor_2::_connections.lock(pegasus_thread_self()); |
|
temp = monitor_2::_connections.next(0); |
|
while(temp != 0 ) |
|
{ |
|
if(sock == temp->getSocket()) |
|
{ |
|
temp = monitor_2::_connections.remove_no_lock(temp); |
|
monitor_2::_connections.unlock(); |
|
return temp; |
|
} |
|
temp = monitor_2::_connections.next(temp); |
|
} |
|
monitor_2::_connections.unlock(); |
|
} |
|
catch(...) |
|
{ |
|
} |
|
return 0; |
|
} |
|
|
|
Boolean monitor_2::insert_connection(HTTPConnection2* connection) |
|
{ |
|
try |
|
{ |
|
monitor_2::_connections.insert_first(connection); |
|
} |
|
catch(...) |
|
{ |
|
return false; |
|
} |
|
return true; |
|
} |
|
|
|
|
PEGASUS_NAMESPACE_END | PEGASUS_NAMESPACE_END |