1 // Copyright (C) 2007-2012 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
23 // File : CASCatch_CatchSignals.cxx
24 // Author : Sergey RUIN, Open CASCADE S.A.S (sergey.ruin@opencascade.com)
26 #include "CASCatch_CatchSignals.hxx"
28 #include "CASCatch_Failure.hxx"
29 #include "CASCatch_ErrorHandler.hxx"
30 #include <TCollection_AsciiString.hxx>
32 #define MAX_HANDLER_NUMBER 6
35 //================================================================================
37 * \brief creates a CASCatch_CatchSignals
39 //================================================================================
40 CASCatch_CatchSignals::CASCatch_CatchSignals()
41 :myIsActivated(Standard_False)
44 Standard_Integer i = 0;
45 for(; i<=MAX_HANDLER_NUMBER; i++)
46 mySigStates[i] = NULL;
51 //================================ UNIX part ==================================================
54 #include <OSD_WhoAmI.hxx>
55 #include <OSD_SIGHUP.hxx>
56 #include <OSD_SIGINT.hxx>
57 #include <OSD_SIGQUIT.hxx>
58 #include <OSD_SIGILL.hxx>
59 #include <OSD_SIGKILL.hxx>
60 #include <OSD_SIGBUS.hxx>
61 #include <OSD_SIGSEGV.hxx>
62 #include <OSD_SIGSYS.hxx>
64 #include <exception.h>
67 //==============================
68 typedef void (ACT_SIGIO_HANDLER)(void) ;
70 ACT_SIGIO_HANDLER *ADR_ACT_SIGIO_HANDLER = NULL ;
72 typedef void (* SIG_PFV) (int);
75 # include <floatingpoint.h>
79 # include <floatingpoint.h>
80 # include <sys/machsig.h>
86 #include <sys/signal.h>
94 # include <sys/siginfo.h>
102 # include <sys/siginfo.h>
106 //================================================================================
108 * \brief universal handler for signals
110 //================================================================================
111 static void Handler(const OSD_Signals theSig, const OSD_Signals)
115 sigaddset(&set, theSig);
116 sigprocmask(SIG_UNBLOCK, &set, NULL) ;
118 TCollection_AsciiString aMessage(theSig);
119 aMessage+=" signal detected";
121 CASCatch_Failure::Raise(aMessage.ToCString());
126 //================================================================================
128 * \brief handler for SIGSEGV signal
130 //================================================================================
131 static void SegvHandler(const OSD_Signals, const Standard_Address, const Standard_Address)
135 sigaddset(&set, SIGSEGV);
136 sigprocmask (SIG_UNBLOCK, &set, NULL);
138 CASCatch_Failure::Raise("SIGSEGV detected");
143 //================================================================================
145 * \brief activates a signals handling
147 //================================================================================
148 void CASCatch_CatchSignals::Activate()
150 if(myIsActivated) return;
152 struct sigaction act;
154 Standard_Integer i = 0;
155 for(; i<=MAX_HANDLER_NUMBER; i++)
156 mySigStates[i] = new struct sigaction(); //Initialize structures
159 act.sa_handler = (SIG_PFV) &Handler ;
160 sigemptyset(&act.sa_mask) ;
163 stat = sigaction(SIGHUP,&act,(struct sigaction*)mySigStates[0]); // ...... hangup
164 stat = sigaction(SIGFPE,&act,(struct sigaction*) mySigStates[1]); // ...... floating point exception
165 stat = sigaction(SIGINT,&act,(struct sigaction*)mySigStates[2]); // ...... interrupt
166 stat = sigaction(SIGQUIT,&act,(struct sigaction*)mySigStates[3]); // ...... quit
167 stat = sigaction(SIGBUS,&act,(struct sigaction*)mySigStates[4]); // ...... bus error
168 stat = sigaction(SIGILL,&act,(struct sigaction*)mySigStates[5]); // ...... illegal instruction
171 act.sa_flags = SA_RESTART ;
175 act.sa_handler = (SIG_PFV) &SegvHandler ;
177 #ifdef SA_SIGINFO // OSF,SOLARIS,IRIX
178 act.sa_flags = act.sa_flags | SA_SIGINFO ;
180 act.sa_sigaction = (void(*)(int, siginfo_t *, void*)) &SegvHandler ;
184 stat = sigaction( SIGSEGV , &act , (struct sigaction*)mySigStates[6]); // ...... segmentation violation
186 myIsActivated = Standard_True;
190 //================================================================================
192 * \brief deactivates a signals handling
194 //================================================================================
195 void CASCatch_CatchSignals::Deactivate()
197 if(!myIsActivated) return;
199 struct sigaction oact;
202 stat = sigaction(SIGHUP,(struct sigaction*)mySigStates[0],&oact); // ...... hangup
203 stat = sigaction(SIGFPE,(struct sigaction*)mySigStates[1],&oact); // ...... floating point exception
204 stat = sigaction(SIGINT,(struct sigaction*)mySigStates[2],&oact); // ...... interrupt
205 stat = sigaction(SIGQUIT,(struct sigaction*)mySigStates[3],&oact); // ...... quit
206 stat = sigaction(SIGBUS,(struct sigaction*)mySigStates[4],&oact); // ...... bus error
207 stat = sigaction(SIGILL,(struct sigaction*)mySigStates[5],&oact); // ...... illegal instruction
208 stat = sigaction(SIGSEGV,(struct sigaction*)mySigStates[6],&oact); // ...... segmentation violation
211 Standard_Integer i = 0;
212 for(; i<=MAX_HANDLER_NUMBER; i++)
213 delete (struct sigaction*)mySigStates[i];
215 myIsActivated = Standard_False;
221 //====================================== WNT part ====================================================
222 #include <OSD_WNT_1.hxx>
228 #define _OSD_FPX ( _EM_DENORMAL | _EM_INEXACT | _EM_UNDERFLOW | _EM_ZERODIVIDE | _EM_OVERFLOW) //Mask these exceptions
230 //================================================================================
232 * \brief handler for unexpected exceptions
234 //================================================================================
235 static Standard_Integer WntHandler(const Standard_Address theExceptionInfo)
237 LPEXCEPTION_POINTERS lpXP = ( LPEXCEPTION_POINTERS )theExceptionInfo;
238 DWORD dwExceptionCode = lpXP -> ExceptionRecord -> ExceptionCode;
240 TCollection_AsciiString aMessage((Standard_Integer)dwExceptionCode);
241 aMessage+=" Exception code - unexpected exception";
243 CASCatch_Failure::Raise(aMessage.ToCString());
245 return EXCEPTION_EXECUTE_HANDLER;
248 void SIGWntHandler(int , int ) ;
249 static void (*SIGWNTHANDLER)(int) = ( void (*)(int) ) ( &SIGWntHandler ) ;
252 //================================================================================
254 * \brief handler for signals
256 //================================================================================
257 static void SIGWntHandler(const int signum , const int theCode)
260 void (*OLDSIGWNTHANDLER)(int) ;
265 _controlfp ( _OSD_FPX, _MCW_EM );
266 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
268 if(theCode == _FPE_UNDERFLOW || theCode == _FPE_INEXACT) return;
269 CASCatch_Failure::Raise ("Floating point error");
272 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
273 CASCatch_Failure::Raise("Access violation");
276 OLDSIGWNTHANDLER = signal( signum , SIGWNTHANDLER );
277 CASCatch_Failure::Raise("Illegal instruction" );
283 //================================================================================
285 * \brief activates a signals handling
287 //================================================================================
288 void CASCatch_CatchSignals::Activate()
290 if(myIsActivated) return;
292 mySigStates[0] = SetUnhandledExceptionFilter (( LPTOP_LEVEL_EXCEPTION_FILTER )&WntHandler);
294 myFloatOpWord = _controlfp(0, 0);
295 _controlfp ( _OSD_FPX, _MCW_EM ); //Enable floating point exceptions
297 mySigStates[1] = signal( SIGSEGV , SIGWNTHANDLER );
298 mySigStates[2] = signal( SIGFPE , SIGWNTHANDLER );
299 mySigStates[3] = signal( SIGILL , SIGWNTHANDLER );
301 myIsActivated = Standard_True;
304 //================================================================================
306 * \brief deactivates a signals handling
308 //================================================================================
309 void CASCatch_CatchSignals::Deactivate()
311 if(!myIsActivated) return;
313 SetUnhandledExceptionFilter (( LPTOP_LEVEL_EXCEPTION_FILTER )mySigStates[0]);
315 _controlfp ( myFloatOpWord, _MCW_EM );
317 signal( SIGSEGV , ( void (*)(int) )mySigStates[1]);
318 signal( SIGFPE , ( void (*)(int) )mySigStates[2]);
319 signal( SIGILL , ( void (*)(int) )mySigStates[3]);
321 Standard_Integer i = 0;
322 for(; i<=MAX_HANDLER_NUMBER; i++)
323 mySigStates[i] = NULL;
325 myIsActivated = Standard_False;
330 //================================================================================
332 * \brief deactivates a signals handling
334 //================================================================================
335 void CASCatch_CatchSignals::Destroy()
337 if(myIsActivated) Deactivate();