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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="service.cpp?sortby=date"><IMG SRC="http://www.nevrax.org/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="service.cpp?sortby=date">service.cpp</A>
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Revision <B>1.136</B>, <i>Thu Jul 18 15:01:14 2002 UTC</i> (10 days, 19 hours ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>Changes since <b>1.135: +18 -1
lines</b><PRE>
ADDED: exit and freeze
</PRE>
</td></tr></table><HR noshade><PRE>/** \file service.cpp
* Base class for all network services
*
* $Id: service.cpp,v 1.136 2002/07/18 15:01:14 lecroart Exp $
*
* \todo ace: test the signal redirection on Unix
* \todo ace: add parsing command line (with CLAP?)
*/
/* Copyright, 2001 Nevrax Ltd.
*
* This file is part of NEVRAX NEL.
* NEVRAX NEL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* NEVRAX NEL is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NEVRAX NEL; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "stdnet.h"
#ifdef NL_OS_WINDOWS
//
// Includes
//
// these defines is for IsDebuggerPresent(). it'll not compile on windows 95
// just comment this and the IsDebuggerPresent to compile on windows 95
# define _WIN32_WINDOWS 0x0410
# define WINVER 0x0400
# include <windows.h>
# include <direct.h>
#elif defined NL_OS_UNIX
# include <unistd.h>
#endif
#include <stdlib.h>
#include <signal.h>
#include "nel/misc/config_file.h"
#include "nel/misc/displayer.h"
#include "nel/misc/mutex.h"
#include "nel/misc/window_displayer.h"
#include "nel/misc/gtk_displayer.h"
#include "nel/misc/win_displayer.h"
#include "nel/misc/path.h"
#include "nel/misc/hierarchical_timer.h"
#include "nel/net/naming_client.h"
#include "nel/net/service.h"
#include "nel/net/unified_network.h"
#include "nel/net/net_manager.h"
#include "nel/net/net_displayer.h"
#include "nel/misc/hierarchical_timer.h"
//
// Namespace
//
using namespace std;
using namespace NLMISC;
namespace NLNET
{
//
// Constants
//
static const sint Signal[] = {
SIGABRT, SIGFPE, SIGILL, SIGINT, SIGSEGV, SIGTERM
};
static const char *SignalName[]=
{
"SIGABRT", "SIGFPE", "SIGILL", "SIGINT", "SIGSEGV", "SIGTERM"
};
//
// Variables
//
// class static member
IService *IService::_Instance = NULL;
static sint ExitSignalAsked = 0;
// services stat
static sint32 NetSpeedLoop, UserSpeedLoop;
// this is the thread that initialized the signal redirection
// we ll ignore other thread signals
static uint SignalisedThread;
static CFileDisplayer fd;
static CNetDisplayer commandDisplayer(false);
static CLog commandLog;
//
// Callback managing
//
void AESConnection (const string &serviceName, TSockId from, void *arg)
{
// established a connection to the AES, identify myself
//
// Sends the identification message with the name of the service and all commands available on this service
//
CMessage msgout (CNetManager::getSIDA ("AES"), "SID");
msgout.serial (IService::getInstance()->_AliasName, IService::getInstance()->_ShortName, IService::getInstance()->_LongName);
ICommand::serialCommands (msgout);
CNetManager::send ("AES", msgout);
if (IService::getInstance()->_Initialized)
{
CMessage msgout2 (CNetManager::getSIDA ("AES"), "SR");
CNetManager::send ("AES", msgout2);
}
// add the displayer to the standard logger
CCallbackClient *client = dynamic_cast<CCallbackClient *>(CNetManager::getNetBase("AES"));
commandDisplayer.setLogServer (client);
commandLog.addDisplayer (&commandDisplayer);
}
void AESConnection5 (const string &serviceName, uint16 sid, void *arg)
{
// established a connection to the AES, identify myself
//
// Sends the identification message with the name of the service and all commands available on this service
//
CMessage msgout ("SID");
msgout.serial (IService::getInstance()->_AliasName, IService::getInstance()->_ShortName, IService::getInstance()->_LongName);
ICommand::serialCommands (msgout);
CUnifiedNetwork::getInstance()->send("AES", msgout);
if (IService::getInstance()->_Initialized)
{
CMessage msgout2 ("SR");
CUnifiedNetwork::getInstance()->send("AES", msgout2);
}
// add the displayer to the standard logger
TSockId hid;
CCallbackClient *client = dynamic_cast<CCallbackClient *>(CUnifiedNetwork::getInstance()->getNetBase("AES", hid));
commandDisplayer.setLogServer (client);
commandLog.addDisplayer (&commandDisplayer);
}
static void AESDisconnection (const string &serviceName, TSockId from, void *arg)
{
commandLog.removeDisplayer (&commandDisplayer);
}
static void AESDisconnection5 (const std::string &serviceName, uint16 sid, void *arg)
{
commandLog.removeDisplayer (&commandDisplayer);
}
static void cbExecCommand (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
string command;
msgin.serial (command);
ICommand::execute (command, commandLog);
}
static void cbExecCommand5 (CMessage &msgin, const std::string &serviceName, uint16 sid)
{
string command;
msgin.serial (command);
ICommand::execute (command, commandLog);
}
// if we receive the stop service, we try to exit now
static void cbStopService (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
ExitSignalAsked = 0xFFFF;
}
static void cbStopService5 (CMessage &msgin, const std::string &serviceName, uint16 sid)
{
ExitSignalAsked = 0xFFFF;
}
// layer4
static TCallbackItem AESCallbackArray[] =
{
{ "STOPS", cbStopService },
{ "EXEC_COMMAND", cbExecCommand },
};
// layer 5
static TUnifiedCallbackItem AESCallbackArray5[] =
{
{ "STOPS", cbStopService5 },
{ "EXEC_COMMAND", cbExecCommand5 },
};
//
// Signals managing
//
// This function is called when a signal comes
static void sigHandler(int Sig)
{
// redirect the signal for the next time
signal(Sig, sigHandler);
// find the signal
for (int i = 0; i < (int)(sizeof(Signal)/sizeof(Signal[0])); i++)
{
if (Sig == Signal[i])
{
if (getThreadId () != SignalisedThread)
{
nldebug ("Not the main thread received the signal (%s, %d), ignore it", SignalName[i],Sig);
return;
}
else
{
nlinfo ("Signal %s (%d) received", SignalName[i], Sig);
switch (Sig)
{
case SIGABRT :
case SIGILL :
case SIGINT :
case SIGSEGV :
case SIGTERM :
// you should not call a function and system function like printf in a SigHandle because
// signal-handler routines are usually called asynchronously when an interrupt occurs.
if (ExitSignalAsked == 0)
{
ExitSignalAsked = Sig;
return;
}
else
{
nlinfo ("Signal already received, launch the brutal exit");
exit (EXIT_FAILURE);
}
break;
}
}
}
}
nlinfo ("Unknown signal received (%d)", Sig);
}
// Initialise the signal redirection
static void initSignal()
{
SignalisedThread = getThreadId ();
#ifdef NL_DEBUG
// in debug mode, we only trap the SIGINT signal
signal(Signal[3], sigHandler);
//nldebug("Signal : %s (%d) trapped", SignalName[3], Signal[3]);
#else
// in release, redirect all signals
/* don't redirect now because to hard to debug...
for (int i = 0; i < (int)(sizeof(Signal)/sizeof(Signal[0])); i++)
{
signal(Signal[i], sigHandler);
nldebug("Signal %s (%d) trapped", SignalName[i], Signal[i]);
}
*/
#endif
}
//
// Class implementation
//
// Ctor
IService::IService() :
_Initialized(false), WindowDisplayer(NULL), _UpdateTimeout(100), _Port(0), _RecordingState(CCallbackNetBase::Off), _SId(0), _Status(0), _IsService5(false), _ResetMeasures(false)
{
// Singleton
nlassert( _Instance == NULL );
_Instance = this;
}
bool IService::haveArg (char argName)
{
for (uint32 i = 0; i < _Args.size(); i++)
{
if (_Args[i].size() >= 2 && _Args[i][0] == '-')
{
if (_Args[i][1] == argName)
{
return true;
}
}
}
return false;
}
string IService::getArg (char argName)
{
for (uint32 i = 0; i < _Args.size(); i++)
{
if (_Args[i].size() >= 2 && _Args[i][0] == '-')
{
if (_Args[i][1] == argName)
{
return _Args[i].substr(2);
}
}
}
throw Exception ("Parameter '-%c' is not found in command line", argName);
}
void IService::setArgs (const char *args)
{
_Args.push_back ("<ProgramName>");
string sargs (args);
sint pos1 = 0, pos2 = 0;
do
{
pos1 = sargs.find_first_not_of (" ", pos2);
if (pos1 == string::npos) break;
pos2 = sargs.find_first_of (" ", pos1);
_Args.push_back (sargs.substr (pos1, pos2-pos1));
}
while (pos2 != string::npos);
}
void IService::setArgs (int argc, const char **argv)
{
for (sint i = 0; i < argc; i++)
{
_Args.push_back (argv[i]);
}
}
/*
* Returns a pointer to the CCallbackServer object
*/
CCallbackServer *IService::getServer()
{
if (isService5())
return NULL;
else
return dynamic_cast<CCallbackServer*>(CNetManager::getNetBase(IService::_ShortName));
}
void cbLogFilter (CConfigFile::CVar &var)
{
CLog *log = NULL;
if (var.Name == "NegFiltersDebug")
{
log = DebugLog;
nlinfo ("Updating negative filter on debug from config file");
}
else if (var.Name == "NegFiltersInfo")
{
log = InfoLog;
nlinfo ("Updating negative filter on info from config file");
}
else
{
nlstop;
}
// remove all old filter from configfile
CConfigFile::CVar &oldvar = IService::getInstance()->ConfigFile.getVar (var.Name);
for (sint j = 0; j < oldvar.size(); j++)
{
log->removeFilter (oldvar.asString(j).c_str());
}
// add all new filter from configfile
for (sint i = 0; i < var.size(); i++)
{
log->addNegativeFilter (var.asString(i).c_str());
}
}
//
// The main function of the service
//
sint IService::main (const char *serviceShortName, const char *serviceLongName, uint16 servicePort, const char *configDir, const char *logDir)
{
bool userInitCalled = false;
bool resyncEvenly = false;
CConfigFile::CVar *var = NULL;
try
{
// get the path where to run the service if any in the command line
if (haveArg('A'))
{
_RunningPath = CPath::standardizePath(getArg('A'));
#ifdef NL_OS_WINDOWS
_chdir (_RunningPath.c_str());
#else
chdir (_RunningPath.c_str());
#endif
}
//
// Init parameters
//
_ConfigDir = CPath::standardizePath(configDir);
_LogDir = CPath::standardizePath(logDir);
_ShortName = serviceShortName;
_LongName = serviceLongName;
//
// Init debug/log stuffs (must be first things otherwise we can't log if errors)
//
// get the log dir if any in the command line
if (haveArg('L'))
_LogDir = CPath::standardizePath(getArg('L'));
// get the config file dir if any in the command line
if (haveArg('C'))
_ConfigDir = CPath::standardizePath(getArg('C'));
createDebug (_LogDir.c_str(), false);
DebugLog->addNegativeFilter ("NETL");
// we create the log with service name filename ("test_service.log" for example)
fd.setParam (_LogDir + _LongName + ".log", false);
DebugLog->addDisplayer (&fd);
InfoLog->addDisplayer (&fd);
WarningLog->addDisplayer (&fd);
AssertLog->addDisplayer (&fd);
ErrorLog->addDisplayer (&fd);
//
// Init the hierarchical timer
//
CHTimer::startBench(false, true);
//
// Load the config file
//
ConfigFile.load (_ConfigDir + _LongName + ".cfg");
//
// Set the negatif filter from the config file
//
if ((var = ConfigFile.getVarPtr ("NegFiltersDebug")) != NULL)
{
ConfigFile.setCallback ("NegFiltersDebug", cbLogFilter);
for (sint i = 0; i < var->size(); i++)
{
DebugLog->addNegativeFilter (var->asString(i).c_str());
}
}
if ((var = ConfigFile.getVarPtr ("NegFiltersInfo")) != NULL)
{
ConfigFile.setCallback ("NegFiltersInfo", cbLogFilter);
for (sint i = 0; i < var->size(); i++)
{
InfoLog->addNegativeFilter (var->asString(i).c_str());
}
}
//
// Create the window if neeeded
//
if ((var = ConfigFile.getVarPtr ("WindowStyle")) != NULL)
{
string disp = var->asString ();
#ifdef NL_USE_GTK
if (disp == "GTK")
{
WindowDisplayer = new CGtkDisplayer ("DEFAULT_WD");
}
#endif // NL_USE_GTK
#ifdef NL_OS_WINDOWS
if (disp == "WIN")
{
WindowDisplayer = new CWinDisplayer ("DEFAULT_WD");
}
#endif // NL_OS_WINDOWS
if (WindowDisplayer == NULL && disp != "NONE")
{
nlwarning ("Unknown value for the WindowStyle (should be GTK, WIN or NONE), use no window displayer");
}
}
vector <pair<string,uint> > displayedVariables;
//uint speedNetLabel, speedUsrLabel, rcvLabel, sndLabel, rcvQLabel, sndQLabel, scrollLabel;
if (WindowDisplayer != NULL)
{
//
// Init window param if necessary
//
sint x=-1, y=-1, w=-1, h=-1;
bool iconified = false;
if ((var = ConfigFile.getVarPtr("XWinParam")) != NULL) x = var->asInt();
if ((var = ConfigFile.getVarPtr("YWinParam")) != NULL) y = var->asInt();
if ((var = ConfigFile.getVarPtr("WWinParam")) != NULL) w = var->asInt();
if ((var = ConfigFile.getVarPtr("HWinParam")) != NULL) h = var->asInt();
if ((var = ConfigFile.getVarPtr("HWinParam")) != NULL) iconified = var->asInt() == 1;
if (haveArg('I')) iconified = true;
if (w == -1 && h == -1)
WindowDisplayer->create (string("*INIT* ") + _ShortName + " " + _LongName, iconified, x, y);
else
WindowDisplayer->create (string("*INIT* ") + _ShortName + " " + _LongName, iconified, x, y, w, h);
DebugLog->addDisplayer (WindowDisplayer);
InfoLog->addDisplayer (WindowDisplayer);
WarningLog->addDisplayer (WindowDisplayer);
ErrorLog->addDisplayer (WindowDisplayer);
AssertLog->addDisplayer (WindowDisplayer);
// adding default displayed variables
displayedVariables.push_back(make_pair(string("NetLop|NetSpeedLoop"), WindowDisplayer->createLabel ("NetLop")));
displayedVariables.push_back(make_pair(string("UsrLop|UserSpeedLoop"), WindowDisplayer->createLabel ("UsrLop")));
// displayedVariables.push_back(make_pair(string("Rcv|ReceivedBytes"), WindowDisplayer->createLabel ("Rcv")));
// displayedVariables.push_back(make_pair(string("Snd|SentBytes"), WindowDisplayer->createLabel ("Snd")));
// displayedVariables.push_back(make_pair(string("RcvQ|ReceivedQueueSize"), WindowDisplayer->createLabel ("RcvQ")));
// displayedVariables.push_back(make_pair(string("SndQ|SentQueueSize"), WindowDisplayer->createLabel ("SndQ")));
displayedVariables.push_back(make_pair(string("|Scroller"), WindowDisplayer->createLabel ("NeL Rulez")));
CConfigFile::CVar *v = ConfigFile.getVarPtr("DisplayedVariables");
if (v != NULL)
{
for (sint i = 0; i < v->size(); i++)
{
displayedVariables.push_back(make_pair(v->asString(i), WindowDisplayer->createLabel (v->asString(i).c_str())));
}
}
}
nlinfo ("Starting Service %d '%s' using NeL ("__DATE__" "__TIME__")", isService5()?5:4, _ShortName.c_str());
setStatus (EXIT_SUCCESS);
//
// Redirect signal if needed (in release mode only)
//
#ifdef NL_OS_WINDOWS
#ifdef NL_RELEASE
initSignal();
#else
// don't install signal is the application is started in debug mode
if (IsDebuggerPresent ())
{
//nlinfo("Running with the debugger, don't redirect signals");
initSignal();
}
else
{
//nlinfo("Running without the debugger, redirect SIGINT signal");
initSignal();
}
#endif
#else // NL_OS_UNIX
initSignal();
#endif
//
// Ignore SIGPIPE (broken pipe) on unix system
//
#ifdef NL_OS_UNIX
// Ignore the SIGPIPE signal
sigset_t SigList;
bool IgnoredPipe = true;
if (sigemptyset (&SigList) == -1)
{
perror("sigemptyset()");
IgnoredPipe = false;
}
if (sigaddset (&SigList, SIGPIPE) == -1)
{
perror("sigaddset()");
IgnoredPipe = false;
}
if (sigprocmask (SIG_BLOCK, &SigList, NULL) == -1)
{
perror("sigprocmask()");
IgnoredPipe = false;
}
nldebug ("SIGPIPE %s", IgnoredPipe?"Ignored":"Not Ignored");
#endif // NL_OS_UNIX
//
// Initialize the network system
//
string localhost;
try
{
// Initialize WSAStartup and network stuffs
CSock::initNetwork();
// Get the localhost name
localhost = CInetAddress::localHost().hostName();
}
catch (NLNET::ESocket &)
{
localhost = "<UnknownHost>";
}
// Set the localhost name and service name to the logger
string processName = localhost;
processName += '/';
processName += _ShortName;
CLog::setProcessName (processName);
//
// Initialize server parameters
//
// Get the port from config file or in the macro (overload the port set by the user init())
if ((var = ConfigFile.getVarPtr("Port")) != NULL)
{
// set the listen port with the value in the config file if any
_Port = var->asInt();
}
else
{
// set the listen port with the value in the NLNET_SERVICE_MAIN macro
_Port = servicePort;
}
// set the listen port if there are a port arg in the command line
if (haveArg('P'))
{
_Port = atoi(getArg('P').c_str());
}
// set the aliasname if is present in the command line
if (haveArg('N'))
{
_AliasName = getArg('N');
}
// Load the recording state from the config file
if ((var = ConfigFile.getVarPtr ("Rec")) != NULL)
{
string srecstate = var->asString();
strupr( srecstate );
if ( srecstate == "RECORD" )
{
_RecordingState = CCallbackNetBase::Record;
nlinfo( "Service recording messages" );
}
else if ( srecstate == "REPLAY" )
{
_RecordingState = CCallbackNetBase::Replay;
nlinfo( "Service replaying messages" );
}
else
{
_RecordingState = CCallbackNetBase::Off;
}
}
else
{
// Not found
_RecordingState = CCallbackNetBase::Off;
}
// Load the default stream format
if ((var = ConfigFile.getVarPtr ("StringMsgFormat")) != NULL)
{
CMessage::setDefaultStringMode( var->asInt() == 1 );
}
else
{
// Not found => binary
CMessage::setDefaultStringMode( false );
}
/*
//
// Layer4 Startup (Connect to the Naming Service (except for the NS itself and Login Service))
//
if (IService::_ShortName != "NS" && IService::_ShortName != "LS" && IService::_ShortName != "AES" && IService::_ShortName != "AS")
{
bool ok = false;
while (!ok)
{
// read the naming service address from the config file
CInetAddress loc(ConfigFile.getVar("NSHost").asString(), ConfigFile.getVar("NSPort").asInt());
try
{
CNetManager::init( &loc, _RecordingState );
ok = true;
}
catch (ESocketConnectionFailed &)
{
nlwarning ("Could not connect to the Naming Service (%s). Retrying in a few seconds...", loc.asString().c_str());
nlSleep (5000);
}
}
}
else
{
CNetManager::init( NULL, _RecordingState );
}
*/
///
/// Layer5 Startup
///
// get the sid
if ((var = ConfigFile.getVarPtr ("SId")) != NULL)
{
sint32 sid = var->asInt();
if (sid<0 || sid>255)
{
nlwarning("Bad SId value in the config file, %d is not in [0;255] range", sid);
_SId = 0;
}
else
{
_SId = (uint8) sid;
}
}
else
{
// ok, SId not found, use dynamic sid
_SId = 0;
}
// look if we don't want to use NS
if ((var = ConfigFile.getVarPtr ("DontUseNS")) != NULL)
{
// if we set the value in the config file, get it
_DontUseNS = var->asInt() == 1;
}
else
{
// if not, we use ns only if service is not ns, ls, aes, as
_DontUseNS = (_ShortName == "NS" || _ShortName == "LS" || _ShortName == "AES" || _ShortName == "AS");
}
// normal setup for the common services
if (!_DontUseNS)
{
bool ok = false;
while (!ok)
{
// read the naming service address from the config file
string LSAddr = ConfigFile.getVar ("NSHost").asString();
// if there's no port to the NS, use the default one 50000
if (LSAddr.find(":") == string::npos)
LSAddr += ":50000";
CInetAddress loc(LSAddr);
try
{
if (isService5())
CUnifiedNetwork::getInstance()->init (&loc, _RecordingState, _ShortName, _Port, _SId);
else
CNetManager::init( &loc, _RecordingState );
ok = true;
}
catch (ESocketConnectionFailed &)
{
nlwarning ("Could not connect to the Naming Service (%s). Retrying in a few seconds...", loc.asString().c_str());
nlSleep (5000);
}
}
}
else
{
if (isService5())
CUnifiedNetwork::getInstance()->init(NULL, _RecordingState, _ShortName, _Port, _SId);
else
CNetManager::init( NULL, _RecordingState );
}
//
// Connect to the local AES and send identification
//
// look if we don't want to use NS
if ((var = ConfigFile.getVarPtr ("DontUseAES")) != NULL)
{
// if we set the value in the config file, get it
_DontUseAES = var->asInt() == 1;
}
else
{
// if not, we use aes only if service is not aes or as
_DontUseAES = (_ShortName == "AES" || _ShortName == "AS");
}
if (!_DontUseAES)
{
if (isService5())
{
CUnifiedNetwork::getInstance()->setServiceUpCallback ("AES", AESConnection5, NULL);
CUnifiedNetwork::getInstance()->setServiceDownCallback ("AES", AESDisconnection5, NULL);
CUnifiedNetwork::getInstance()->addService ("AES", CInetAddress("localhost:49997"), false);
CUnifiedNetwork::getInstance()->addCallbackArray (AESCallbackArray5, sizeof(AESCallbackArray5)/sizeof(AESCallbackArray5[0]));
}
else
{
CNetManager::setConnectionCallback ("AES", AESConnection, NULL);
CNetManager::setDisconnectionCallback ("AES", AESDisconnection, NULL);
CNetManager::addClient ("AES", "localhost:49997");
CNetManager::addCallbackArray ("AES", AESCallbackArray, sizeof(AESCallbackArray)/sizeof(AESCallbackArray[0]));
}
}
//
// Add callback array
//
if (isService5())
{
// add callback set in the NLNET_SERVICE_MAIN macro
NLNET::CUnifiedNetwork::getInstance()->addCallbackArray(_CallbackArray5, _CallbackArraySize);
}
else
{
CNetManager::addServer (_ShortName, _Port, _SId);
CNetManager::addCallbackArray (_ShortName, _CallbackArray, _CallbackArraySize);
}
//
// Now we have the service id, we can set the entites id generator
//
_NextEntityId.setServiceId(_SId);
//
// Call the user service init
//
userInitCalled = true; // the bool must be put *before* the call to init()
init ();
//
// Connects to the present services
// WARNING: only after the user init() was called because the
// addService may call up service callbacks.
//
if (isService5())
CUnifiedNetwork::getInstance()->connect();
//
// On Unix system, the service fork itself to give back the hand to the shell
//
// note: we don't forking anymore because it doesn't work with thread system
//
#ifdef NL_OS_UNIX
/*
nlinfo( "Forking the service" );
int pid = fork();
/// \todo ace: when we fork() on linux, the father process tries to release threads but it should not, so we have to find a solution
if (pid == -1)
{
nlerror ("Couldn't fork the service");
}
else if (pid != 0)
{
// It's the father, return the hand to the shell.
exit(EXIT_SUCCESS);
}
*/
#endif // NL_OS_UNIX
//
// Say to the AES that the service is ready
//
if (!_DontUseAES)
{
if (isService5())
{
// send the ready message (service init finished)
CMessage msgout ("SR");
CUnifiedNetwork::getInstance()->send("AES", msgout);
}
else
{
// send the ready message (service init finished)
CMessage msgout (CNetManager::getSIDA ("AES"), "SR");
CNetManager::send ("AES", msgout);
}
}
//
// Add default pathes
//
if ((var = ConfigFile.getVarPtr ("Paths")) != NULL)
{
for (sint i = 0; i < var->size(); i++)
{
CPath::addSearchPath (var->asString(i));
}
}
_Initialized = true;
nlinfo ("Service initialised");
//
// Call the user command from the config file if any
//
if ((var = ConfigFile.getVarPtr ("StartCommands")) != NULL)
{
for (sint i = 0; i < var->size(); i++)
{
ICommand::execute (var->asString(i), *InfoLog);
}
}
nlinfo ("Service ready");
if (WindowDisplayer != NULL)
WindowDisplayer->setTitleBar (_ShortName + " " + _LongName);
//
// Call the user service update each loop and check files and network activity
//
do
{
H_BEFORE(NLNETServiceLoop);
// count the amount of time to manage internal system
TTime bbefore = CTime::getLocalTime ();
// call the user update and exit if the user update asks it
H_BEFORE(NLNETServiceUpdate);
if (!update ())
{
H_AFTER(NLNETServiceUpdate);
H_AFTER(NLNETServiceLoop);
break;
}
H_AFTER(NLNETServiceUpdate);
// count the amount of time to manage internal system
TTime before = CTime::getLocalTime ();
if (WindowDisplayer != NULL)
{
// update the window displayer and quit if asked
if (!WindowDisplayer->update ())
ExitSignalAsked = true;
}
// stop the loop if the exit signal asked
if (ExitSignalAsked)
{
H_AFTER(NLNETServiceLoop);
break;
}
CConfigFile::checkConfigFiles ();
CFile::checkFileChange();
H_BEFORE(NLNETServiceManageMessages);
if (isService5())
{
// get and manage layer 5 messages
CUnifiedNetwork::getInstance()->update (_UpdateTimeout);
}
else
{
// get and manage layer 4 messages
CNetManager::update (_UpdateTimeout);
}
H_AFTER(NLNETServiceManageMessages);
// resync the clock every hours
if (resyncEvenly)
{
static TTime LastSyncTime = CTime::getLocalTime ();
//---------------------------------------
// To simulate Ctrl-C in the debugger... Exit after 1 min !
/*if (CTime::getLocalTime () - LastSyncTime > 60 * 1000 )
{
ExitSignalAsked = 1;
}*/
//---------------------------------------
/*
if (CTime::getLocalTime () - LastSyncTime > 60*60*1000)
{
CUniTime::syncUniTimeFromService ( _RecordingState );
LastSyncTime = CTime::getLocalTime ();
}
*/
}
NetSpeedLoop = (sint32) (CTime::getLocalTime () - before);
UserSpeedLoop = (sint32) (before - bbefore);
if (WindowDisplayer != NULL)
{
uint64 rcv, snd, rcvq, sndq;
if (isService5())
{
rcv = CUnifiedNetwork::getInstance()->getBytesReceived ();
snd = CUnifiedNetwork::getInstance()->getBytesSent ();
rcvq = CUnifiedNetwork::getInstance()->getReceiveQueueSize ();
sndq = CUnifiedNetwork::getInstance()->getSendQueueSize ();
}
else
{
rcv = CNetManager::getBytesReceived ();
snd = CNetManager::getBytesSent ();
rcvq = CNetManager::getReceiveQueueSize ();
sndq = CNetManager::getSendQueueSize ();
}
string str;
CLog log;
CMemDisplayer md;
log.addDisplayer (&md);
for (uint i = 0; i < displayedVariables.size(); i++)
{
// it s a separator, do nothing
if (displayedVariables[i].first.empty())
continue;
// it s a command, do nothing
if (displayedVariables[i].first[0] == '@')
continue;
string dispName = displayedVariables[i].first;
string varName = dispName;
sint pos = dispName.find("|");
if (pos != string::npos)
{
varName = displayedVariables[i].first.substr(pos+1);
dispName = displayedVariables[i].first.substr(0, pos);
}
if (dispName.empty())
str = "";
else
str = dispName + ": ";
md.clear ();
ICommand::execute(varName, log, true);
const std::deque<std::string> &strs = md.lockStrings();
if (strs.size()>0)
{
sint pos = strs[0].find("=");
if(pos != string::npos && pos + 2 < (sint)strs[0].size())
{
sint pos2 = string::npos;
if(strs[0][strs[0].size()-1] == '\n')
pos2 = strs[0].size() - pos - 2 - 1;
str += strs[0].substr (pos+2, pos2);
}
else
{
str += "???";
}
}
md.unlockStrings();
WindowDisplayer->setLabel (displayedVariables[i].second, str);
}
}
// nldebug ("SYNC: updatetimeout must be %d and is %d, sleep the rest of the time", _UpdateTimeout, delta);
H_AFTER(NLNETServiceLoop);
// Resetting the hierarchical timer must be done outside the top-level timer
if ( _ResetMeasures )
{
CHTimer::clear();
_ResetMeasures = false;
}
}
while (true);
}
catch (EFatalError &)
{
// Somebody call nlerror, so we have to quit now, the message already display
// so we don't have to to anything
setStatus (EXIT_FAILURE);
}
catch ( uint ) // SEH exceptions
{
ErrorLog->displayNL( "System exception" );
}
#ifdef NL_RELEASE
/* // in release mode, we catch everything to handle clean release.
catch (Exception &e)
{
// Catch NeL exception to release the system cleanly
setStatus (EXIT_FAILURE);
nlinfo ("ERROR: NeL Exception: Error running the service \"%s\": %s", _ShortName.c_str(), e.what());
}
catch (...)
{
// Catch anything we can to release the system cleanly
setStatus (EXIT_FAILURE);
nlinfo ("ERROR: Unknown external exception");
}
*/
#endif
try
{
nlinfo ("Service starts releasing");
//
// Call the user service release() if the init() was called
//
if (userInitCalled)
release ();
//
// Delete all network connection (naming client also)
//
if (isService5())
CUnifiedNetwork::getInstance()->release ();
else
CNetManager::release ();
CSock::releaseNetwork ();
//
// Remove the window displayer
//
if (WindowDisplayer != NULL)
{
DebugLog->removeDisplayer (WindowDisplayer);
InfoLog->removeDisplayer (WindowDisplayer);
WarningLog->removeDisplayer (WindowDisplayer);
ErrorLog->removeDisplayer (WindowDisplayer);
AssertLog->removeDisplayer (WindowDisplayer);
delete WindowDisplayer;
WindowDisplayer = NULL;
}
nlinfo ("Service released succesfuly");
}
catch (EFatalError &)
{
// Somebody call nlerror, so we have to quit now, the message already display
// so we don't have to to anything
setStatus (EXIT_FAILURE);
}
#ifdef NL_RELEASE
/* // in release mode, we catch everything to handle clean release.
catch (Exception &e)
{
setStatus (EXIT_FAILURE);
nlinfo ("ERROR: NeL Exception: Error releasing the service \"%s\": %s", _ShortName.c_str(), e.what());
}
catch (...)
{
// Catch anything we can to release the system cleanly
setStatus (EXIT_FAILURE);
nlinfo ("ERROR: Unknown external exception");
}
*/
#endif
CHTimer::endBench();
CHTimer::display();
CHTimer::displayByExecutionPath ();
CHTimer::displayHierarchical(InfoLog, true, 64);
CHTimer::displayHierarchicalByExecutionPathSorted (InfoLog, CHTimer::TotalTime, true, 64);
nlinfo ("Service ends");
return ExitSignalAsked?100+ExitSignalAsked:getStatus ();
}
void IService::exit (sint code)
{
ExitSignalAsked = code;
}
/*
* Require to reset the hierarchical timer
*/
void IService::requireResetMeasures()
{
_ResetMeasures = true;
}
//
// Commands and Variables for controling all services
//
NLMISC_VARIABLE(sint32, NetSpeedLoop, "duration of the last network loop (in ms)");
NLMISC_VARIABLE(sint32, UserSpeedLoop, "duration of the last user loop (in ms)");
NLMISC_DYNVARIABLE(uint64, ReceivedBytes, "total of bytes received by this service")
{
// we can only read the value
if (get)
*pointer = IService::getInstance()->isService5()?CUnifiedNetwork::getInstance()->getBytesReceived ():CNetManager::getBytesReceived ();
}
NLMISC_DYNVARIABLE(uint64, SentBytes, "total of bytes sent by this service")
{
// we can only read the value
if (get)
*pointer = IService::getInstance()->isService5()?CUnifiedNetwork::getInstance()->getBytesSent ():CNetManager::getBytesSent ();
}
NLMISC_DYNVARIABLE(uint64, ReceivedQueueSize, "current size in bytes of the received queue size")
{
// we can only read the value
if (get)
*pointer = IService::getInstance()->isService5()?CUnifiedNetwork::getInstance()->getReceiveQueueSize ():CNetManager::getReceiveQueueSize ();
}
NLMISC_DYNVARIABLE(uint64, SentQueueSize, "current size in bytes of the sent queue size")
{
// we can only read the value
if (get)
*pointer = IService::getInstance()->isService5()?CUnifiedNetwork::getInstance()->getSendQueueSize ():CNetManager::getSendQueueSize ();
}
NLMISC_DYNVARIABLE(string, Scroller, "current size in bytes of the sent queue size")
{
if (get)
{
// display the scroll text
static string foo = "Welcome to NeL Service! This scroll is used to see the update frequency of the main function and to see if the service is frozen or not. Have a nice day and hope you'll like NeL!!! "
"Welcome to NeL Service! This scroll is used to see the update frequency of the main function and to see if the service is frozen or not. Have a nice day and hope you'll like NeL!!! ";
static int pos = 0;
*pointer = foo.substr ((pos++)%(foo.size()/2), 10);
}
}
NLMISC_COMMAND (quit, "exit the service", "")
{
if(args.size() != 0) return false;
ExitSignalAsked = 0xFFFF;
return true;
}
NLMISC_COMMAND (brutalQuit, "exit the service brutally", "")
{
if(args.size() != 0) return false;
exit (0xFFFFFFFF);
return true;
}
#ifdef MUTEX_DEBUG
NLMISC_COMMAND (mutex, "display mutex values", "")
{
if(args.size() != 0) return false;
map<CFairMutex*,TMutexLocks> acquiretimes = getNewAcquireTimes();
map<CFairMutex*,TMutexLocks>::iterator im;
for ( im=acquiretimes.begin(); im!=acquiretimes.end(); ++im )
{
nlinfo( "%d %p %s: %.0f %.0f, called %u times th(%d, %d wait)%s", (*im).second.MutexNum, (*im).first, (*im).second.MutexName.c_str(),
CTime::cpuCycleToSecond((*im).second.TimeToEnter)*1000.0, CTime::cpuCycleToSecond((*im).second.TimeInMutex)*1000.0,
(*im).second.Nb, (*im).second.ThreadHavingTheMutex, (*im).second.WaitingMutex,
(*im).second.Dead?" DEAD":"");
}
return true;
}
#endif // MUTEX_DEBUG
NLMISC_COMMAND (serviceInfo, "display information about this service", "")
{
if(args.size() != 0) return false;
log.displayNL ("Service %d '%s' '%s' '%s' using NeL ("__DATE__" "__TIME__")", IService::getInstance()->isService5()?5:4, IService::getInstance()->_ShortName.c_str(), IService::getInstance()->_LongName.c_str(), IService::getInstance()->_AliasName.c_str());
log.displayNL ("Service listening port: %d", IService::getInstance()->_Port);
log.displayNL ("Service running directory: '%s'", IService::getInstance()->_RunningPath.c_str());
log.displayNL ("Service log directory: '%s'", IService::getInstance()->_LogDir.c_str());
log.displayNL ("Service config directory: '%s' config filename: '%s.cfg'", IService::getInstance()->_ConfigDir.c_str(), IService::getInstance()->_LongName.c_str());
log.displayNL ("Service id: %d", IService::getInstance()->_SId);
log.displayNL ("Service update timeout: %dms", IService::getInstance()->_UpdateTimeout);
log.displayNL ("Service %suse naming service", IService::getInstance()->_DontUseNS?"don't ":"");
log.displayNL ("Service %suse admin executor service", IService::getInstance()->_DontUseAES?"don't ":"");
#ifdef NL_RELEASE_DEBUG
string mode = "NL_RELEASE_DEBUG";
#elif defined(NL_DEBUG_FAST)
string mode = "NL_DEBUG_FAST";
#elif defined(NL_DEBUG)
string mode = "NL_DEBUG";
#elif defined(NL_RELEASE)
string mode = "NL_RELEASE";
#else
string mode = "???";
#endif
log.displayNL ("NeL is compiled in %s mode", mode.c_str());
nlinfo ("Services arguments: %d args", IService::getInstance()->_Args.size ());
for (uint i = 0; i < IService::getInstance()->_Args.size (); i++)
{
nlinfo (" argv[%d] = '%s'", i, IService::getInstance()->_Args[i].c_str ());
}
log.displayNL ("Naming service info: %s", CNamingClient::info().c_str());
ICommand::execute ("services", log);
return true;
}
NLMISC_COMMAND(resetMeasures, "reset hierarchical timer", "")
{
IService::getInstance()->requireResetMeasures();
return true;
}
NLMISC_COMMAND(displayMeasures, "display hierarchical timer", "")
{
CHTimer::display();
CHTimer::displayHierarchicalByExecutionPathSorted (InfoLog, CHTimer::TotalTime, true, 64);
return true;
}
NLMISC_COMMAND(getWinDisplayerInfo, "display the info about the pos and size of the window displayer", "")
{
uint32 x,y,w,h;
IService::getInstance()->WindowDisplayer->getWindowPos (x,y,w,h);
log.displayNL ("Window Displayer : XWinParam = %d; YWinParam = %d; WWinParam = %d; HWinParam = %d;", x, y, w, h);
return true;
}
NLMISC_COMMAND(printConfigFile, "display the variables of the default configfile", "")
{
IService::getInstance()->ConfigFile.print(&log);
return true;
}
NLMISC_COMMAND(getUnknownConfigFileVariables, "display the variables from config file that are called but not present", "")
{
log.displayNL ("%d Variables not found in the configfile '%s'", IService::getInstance()->ConfigFile.UnknownVariables.size(), IService::getInstance()->ConfigFile.getFilename().c_str() );
for (uint i = 0; i < IService::getInstance()->ConfigFile.UnknownVariables.size(); i++)
{
log.displayNL (" %s", IService::getInstance()->ConfigFile.UnknownVariables[i].c_str());
}
return true;
}
NLMISC_COMMAND (freeze, "Freeze the service for N seconds (for debug purpose)", "<N>")
{
if(args.size() != 1) return false;
sint32 n = atoi (args[0].c_str());
log.displayNL ("Freezing %d seconds", n);
nlSleep(n * 1000);
return true;
}
} //NLNET
</PRE>
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