1 // Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 // File : CASCatch_CatchSignals.cxx
23 // Author : Sergey RUIN, Open CASCADE S.A.S (sergey.ruin@opencascade.com)
25 #include "CASCatch_CatchSignals.hxx"
27 #include "CASCatch_Failure.hxx"
28 #include "CASCatch_ErrorHandler.hxx"
29 #include <TCollection_AsciiString.hxx>
31 #define MAX_HANDLER_NUMBER 6
34 //================================================================================
36 * \brief creates a CASCatch_CatchSignals
38 //================================================================================
39 CASCatch_CatchSignals::CASCatch_CatchSignals()
40 :myIsActivated(Standard_False)
43 Standard_Integer i = 0;
44 for(; i<=MAX_HANDLER_NUMBER; i++)
45 mySigStates[i] = NULL;
50 //================================ UNIX part ==================================================
53 #include <OSD_WhoAmI.hxx>
54 #include <OSD_SIGHUP.hxx>
55 #include <OSD_SIGINT.hxx>
56 #include <OSD_SIGQUIT.hxx>
57 #include <OSD_SIGILL.hxx>
58 #include <OSD_SIGKILL.hxx>
59 #include <OSD_SIGBUS.hxx>
60 #include <OSD_SIGSEGV.hxx>
61 #include <OSD_SIGSYS.hxx>
63 #include <exception.h>
66 //==============================
67 typedef void (ACT_SIGIO_HANDLER)(void) ;
69 ACT_SIGIO_HANDLER *ADR_ACT_SIGIO_HANDLER = NULL ;
71 typedef void (* SIG_PFV) (int);
74 # include <floatingpoint.h>
78 # include <floatingpoint.h>
79 # include <sys/machsig.h>
85 #include <sys/signal.h>
93 # include <sys/siginfo.h>
101 # include <sys/siginfo.h>
105 //================================================================================
107 * \brief universal handler for signals
109 //================================================================================
110 static void Handler(const OSD_Signals theSig, const OSD_Signals)
114 sigaddset(&set, theSig);
115 sigprocmask(SIG_UNBLOCK, &set, NULL) ;
117 TCollection_AsciiString aMessage(theSig);
118 aMessage+=" signal detected";
120 CASCatch_Failure::Raise(aMessage.ToCString());
125 //================================================================================
127 * \brief handler for SIGSEGV signal
129 //================================================================================
130 static void SegvHandler(const OSD_Signals, const Standard_Address, const Standard_Address)
134 sigaddset(&set, SIGSEGV);
135 sigprocmask (SIG_UNBLOCK, &set, NULL);
137 CASCatch_Failure::Raise("SIGSEGV detected");
142 //================================================================================
144 * \brief activates a signals handling
146 //================================================================================
147 void CASCatch_CatchSignals::Activate()
149 if(myIsActivated) return;
151 struct sigaction act;
153 Standard_Integer i = 0;
154 for(; i<=MAX_HANDLER_NUMBER; i++)
155 mySigStates[i] = new struct sigaction(); //Initialize structures
158 act.sa_handler = (SIG_PFV) &Handler ;
159 sigemptyset(&act.sa_mask) ;
162 stat = sigaction(SIGHUP,&act,(struct sigaction*)mySigStates[0]); // ...... hangup
163 stat = sigaction(SIGFPE,&act,(struct sigaction*) mySigStates[1]); // ...... floating point exception
164 stat = sigaction(SIGINT,&act,(struct sigaction*)mySigStates[2]); // ...... interrupt
165 stat = sigaction(SIGQUIT,&act,(struct sigaction*)mySigStates[3]); // ...... quit
166 stat = sigaction(SIGBUS,&act,(struct sigaction*)mySigStates[4]); // ...... bus error
167 stat = sigaction(SIGILL,&act,(struct sigaction*)mySigStates[5]); // ...... illegal instruction
170 act.sa_flags = SA_RESTART ;
174 act.sa_handler = (SIG_PFV) &SegvHandler ;
176 #ifdef SA_SIGINFO // OSF,SOLARIS,IRIX
177 act.sa_flags = act.sa_flags | SA_SIGINFO ;
179 act.sa_sigaction = (void(*)(int, siginfo_t *, void*)) &SegvHandler ;
183 stat = sigaction( SIGSEGV , &act , (struct sigaction*)mySigStates[6]); // ...... segmentation violation
185 myIsActivated = Standard_True;
189 //================================================================================
191 * \brief deactivates a signals handling
193 //================================================================================
194 void CASCatch_CatchSignals::Deactivate()
196 if(!myIsActivated) return;
198 struct sigaction oact;
201 stat = sigaction(SIGHUP,(struct sigaction*)mySigStates[0],&oact); // ...... hangup
202 stat = sigaction(SIGFPE,(struct sigaction*)mySigStates[1],&oact); // ...... floating point exception
203 stat = sigaction(SIGINT,(struct sigaction*)mySigStates[2],&oact); // ...... interrupt
204 stat = sigaction(SIGQUIT,(struct sigaction*)mySigStates[3],&oact); // ...... quit
205 stat = sigaction(SIGBUS,(struct sigaction*)mySigStates[4],&oact); // ...... bus error
206 stat = sigaction(SIGILL,(struct sigaction*)mySigStates[5],&oact); // ...... illegal instruction
207 stat = sigaction(SIGSEGV,(struct sigaction*)mySigStates[6],&oact); // ...... segmentation violation
210 Standard_Integer i = 0;
211 for(; i<=MAX_HANDLER_NUMBER; i++)
212 delete (struct sigaction*)mySigStates[i];
214 myIsActivated = Standard_False;
220 //====================================== WNT part ====================================================
221 #include <OSD_WNT_1.hxx>
227 #define _OSD_FPX ( _EM_DENORMAL | _EM_INEXACT | _EM_UNDERFLOW | _EM_ZERODIVIDE | _EM_OVERFLOW) //Mask these exceptions
229 //================================================================================
231 * \brief handler for unexpected exceptions
233 //================================================================================
234 static Standard_Integer WntHandler(const Standard_Address theExceptionInfo)
236 LPEXCEPTION_POINTERS lpXP = ( LPEXCEPTION_POINTERS )theExceptionInfo;
237 DWORD dwExceptionCode = lpXP -> ExceptionRecord -> ExceptionCode;
239 TCollection_AsciiString aMessage((Standard_Integer)dwExceptionCode);
240 aMessage+=" Exception code - unexpected exception";
242 CASCatch_Failure::Raise(aMessage.ToCString());
244 return EXCEPTION_EXECUTE_HANDLER;
247 void SIGWntHandler(int , int ) ;
248 static void (*SIGWNTHANDLER)(int) = ( void (*)(int) ) ( &SIGWntHandler ) ;
251 //================================================================================
253 * \brief handler for signals
255 //================================================================================
256 static void SIGWntHandler(const int signum , const int theCode)
259 void (*OLDSIGWNTHANDLER)(int) ;
264 _controlfp ( _OSD_FPX, _MCW_EM );
265 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
267 if(theCode == _FPE_UNDERFLOW || theCode == _FPE_INEXACT) return;
268 CASCatch_Failure::Raise ("Floating point error");
271 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
272 CASCatch_Failure::Raise("Access violation");
275 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
276 CASCatch_Failure::Raise("Illegal instruction" );
282 //================================================================================
284 * \brief activates a signals handling
286 //================================================================================
287 void CASCatch_CatchSignals::Activate()
289 if(myIsActivated) return;
291 mySigStates[0] = SetUnhandledExceptionFilter (( LPTOP_LEVEL_EXCEPTION_FILTER )&WntHandler);
293 myFloatOpWord = _controlfp(0, 0);
294 _controlfp ( _OSD_FPX, _MCW_EM ); //Enable floating point exceptions
296 mySigStates[1] = signal( SIGSEGV , SIGWNTHANDLER );
297 mySigStates[2] = signal( SIGFPE , SIGWNTHANDLER );
298 mySigStates[3] = signal( SIGILL , SIGWNTHANDLER );
300 myIsActivated = Standard_True;
303 //================================================================================
305 * \brief deactivates a signals handling
307 //================================================================================
308 void CASCatch_CatchSignals::Deactivate()
310 if(!myIsActivated) return;
312 SetUnhandledExceptionFilter (( LPTOP_LEVEL_EXCEPTION_FILTER )mySigStates[0]);
314 _controlfp ( myFloatOpWord, _MCW_EM );
316 signal( SIGSEGV , ( void (*)(int) )mySigStates[1]);
317 signal( SIGFPE , ( void (*)(int) )mySigStates[2]);
318 signal( SIGILL , ( void (*)(int) )mySigStates[3]);
320 Standard_Integer i = 0;
321 for(; i<=MAX_HANDLER_NUMBER; i++)
322 mySigStates[i] = NULL;
324 myIsActivated = Standard_False;
329 //================================================================================
331 * \brief deactivates a signals handling
333 //================================================================================
334 void CASCatch_CatchSignals::Destroy()
336 if(myIsActivated) Deactivate();