Actual source code: signal.c
petsc-3.8.4 2018-03-24
2: /*
3: Routines to handle signals the program will receive.
4: Usually this will call the error handlers.
5: */
6: #include <petsc/private/petscimpl.h>
7: #include <signal.h>
9: static PetscClassId SIGNAL_CLASSID = 0;
11: struct SH {
12: PetscClassId classid;
13: PetscErrorCode (*handler)(int,void*);
14: void *ctx;
15: struct SH *previous;
16: };
17: static struct SH *sh = 0;
18: static PetscBool SignalSet = PETSC_FALSE;
20: /*
21: PetscSignalHandler_Private - This is the signal handler called by the system. This calls
22: any signal handler set by PETSc or the application code.
24: Input Parameters: (depends on system)
25: . sig - integer code indicating the type of signal
26: . code - ??
27: . sigcontext - ??
28: . addr - ??
30: Note: this is declared extern "C" because it is passed to the system routine signal()
31: which is an extern "C" routine. The Solaris 2.7 OS compilers require that this be
32: extern "C".
34: */
35: #if defined(PETSC_HAVE_4ARG_SIGNAL_HANDLER)
36: static void PetscSignalHandler_Private(int sig,int code,struct sigcontext * scp,char *addr)
37: #else
38: static void PetscSignalHandler_Private(int sig)
39: #endif
40: {
44: if (!sh || !sh->handler) PetscSignalHandlerDefault(sig,(void*)0);
45: else {
46: if (sh->classid != SIGNAL_CLASSID) SETERRABORT(PETSC_COMM_WORLD,PETSC_ERR_COR,"Signal object has been corrupted");
47: (*sh->handler)(sig,sh->ctx);
48: }
49: if (ierr) MPI_Abort(PETSC_COMM_WORLD,0);
50: }
52: /*@
53: PetscSignalHandlerDefault - Default signal handler.
55: Not Collective
57: Level: advanced
59: Input Parameters:
60: + sig - signal value
61: - ptr - unused pointer
63: Concepts: signal handler^default
65: @*/
66: PetscErrorCode PetscSignalHandlerDefault(int sig,void *ptr)
67: {
69: const char *SIGNAME[64];
72: SIGNAME[0] = "Unknown signal";
73: #if !defined(PETSC_MISSING_SIGABRT)
74: SIGNAME[SIGABRT] = "Abort";
75: #endif
76: #if !defined(PETSC_MISSING_SIGALRM)
77: SIGNAME[SIGALRM] = "Alarm";
78: #endif
79: #if !defined(PETSC_MISSING_SIGBUS)
80: SIGNAME[SIGBUS] = "BUS: Bus Error, possibly illegal memory access";
81: #endif
82: #if !defined(PETSC_MISSING_SIGCHLD)
83: SIGNAME[SIGCHLD] = "CHLD";
84: #endif
85: #if !defined(PETSC_MISSING_SIGCONT)
86: SIGNAME[SIGCONT] = "CONT";
87: #endif
88: #if !defined(PETSC_MISSING_SIGFPE)
89: SIGNAME[SIGFPE] = "FPE: Floating Point Exception,probably divide by zero";
90: #endif
91: #if !defined(PETSC_MISSING_SIGHUP)
92: SIGNAME[SIGHUP] = "Hang up: Some other process (or the batch system) has told this process to end";
93: #endif
94: #if !defined(PETSC_MISSING_SIGILL)
95: SIGNAME[SIGILL] = "Illegal instruction: Likely due to memory corruption";
96: #endif
97: #if !defined(PETSC_MISSING_SIGINT)
98: SIGNAME[SIGINT] = "Interrupt";
99: #endif
100: #if !defined(PETSC_MISSING_SIGKILL)
101: SIGNAME[SIGKILL] = "Kill: Some other process (or the batch system) has told this process to end";
102: #endif
103: #if !defined(PETSC_MISSING_SIGPIPE)
104: SIGNAME[SIGPIPE] = "Broken Pipe: Likely while reading or writing to a socket";
105: #endif
106: #if !defined(PETSC_MISSING_SIGQUIT)
107: SIGNAME[SIGQUIT] = "Quit: Some other process (or the batch system) has told this process to end";
108: #endif
109: #if !defined(PETSC_MISSING_SIGSEGV)
110: SIGNAME[SIGSEGV] = "SEGV: Segmentation Violation, probably memory access out of range";
111: #endif
112: #if !defined(PETSC_MISSING_SIGSYS)
113: SIGNAME[SIGSYS] = "SYS";
114: #endif
115: #if !defined(PETSC_MISSING_SIGTERM)
116: SIGNAME[SIGTERM] = "Terminate: Some process (or the batch system) has told this process to end";
117: #endif
118: #if !defined(PETSC_MISSING_SIGTRAP)
119: SIGNAME[SIGTRAP] = "TRAP";
120: #endif
121: #if !defined(PETSC_MISSING_SIGTSTP)
122: SIGNAME[SIGTSTP] = "TSTP";
123: #endif
124: #if !defined(PETSC_MISSING_SIGURG)
125: SIGNAME[SIGURG] = "URG";
126: #endif
127: #if !defined(PETSC_MISSING_SIGUSR1)
128: SIGNAME[SIGUSR1] = "User 1";
129: #endif
130: #if !defined(PETSC_MISSING_SIGUSR2)
131: SIGNAME[SIGUSR2] = "User 2";
132: #endif
134: signal(sig,SIG_DFL);
135: (*PetscErrorPrintf)("------------------------------------------------------------------------\n");
136: if (sig >= 0 && sig <= 20) (*PetscErrorPrintf)("Caught signal number %d %s\n",sig,SIGNAME[sig]);
137: else (*PetscErrorPrintf)("Caught signal\n");
139: (*PetscErrorPrintf)("Try option -start_in_debugger or -on_error_attach_debugger\n");
140: (*PetscErrorPrintf)("or see http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind\n");
141: (*PetscErrorPrintf)("or try http://valgrind.org on GNU/linux and Apple Mac OS X to find memory corruption errors\n");
142: #if defined(PETSC_USE_DEBUG)
143: if (!PetscStackActive()) (*PetscErrorPrintf)(" or try option -log_stack\n");
144: else {
145: PetscStackPop; /* remove stack frames for error handlers */
146: PetscStackPop;
147: (*PetscErrorPrintf)("likely location of problem given in stack below\n");
148: (*PetscErrorPrintf)("--------------------- Stack Frames ------------------------------------\n");
149: PetscStackView(PETSC_STDOUT);
150: }
151: #endif
152: #if !defined(PETSC_USE_DEBUG)
153: (*PetscErrorPrintf)("configure using --with-debugging=yes, recompile, link, and run \n");
154: (*PetscErrorPrintf)("to get more information on the crash.\n");
155: #endif
156: PetscError(PETSC_COMM_SELF,0,"User provided function"," unknown file",PETSC_ERR_SIG,PETSC_ERROR_INITIAL,NULL);
157: MPI_Abort(PETSC_COMM_WORLD,(int)ierr);
158: return(0);
159: }
161: #if !defined(PETSC_SIGNAL_CAST)
162: #define PETSC_SIGNAL_CAST
163: #endif
165: /*@C
166: PetscPushSignalHandler - Catches the usual fatal errors and
167: calls a user-provided routine.
169: Not Collective
171: Input Parameter:
172: + routine - routine to call when a signal is received
173: - ctx - optional context needed by the routine
175: Level: developer
177: Concepts: signal handler^setting
179: .seealso: PetscPopSignalHandler(), PetscSignalHandlerDefault(), PetscPushErrorHandler()
181: @*/
182: PetscErrorCode PetscPushSignalHandler(PetscErrorCode (*routine)(int,void*),void *ctx)
183: {
184: struct SH *newsh;
188: if (!SIGNAL_CLASSID) {
189: /* PetscClassIdRegister("Signal",&SIGNAL_CLASSID); */
190: SIGNAL_CLASSID = 19;
191: }
192: if (!SignalSet && routine) {
193: /* Do not catch ABRT, CHLD, KILL */
194: #if !defined(PETSC_MISSING_SIGALRM)
195: /* signal(SIGALRM, PETSC_SIGNAL_CAST PetscSignalHandler_Private); */
196: #endif
197: #if !defined(PETSC_MISSING_SIGBUS)
198: signal(SIGBUS, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
199: #endif
200: #if !defined(PETSC_MISSING_SIGCONT)
201: /*signal(SIGCONT, PETSC_SIGNAL_CAST PetscSignalHandler_Private);*/
202: #endif
203: #if !defined(PETSC_MISSING_SIGFPE)
204: signal(SIGFPE, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
205: #endif
206: #if !defined(PETSC_MISSING_SIGHUP)
207: signal(SIGHUP, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
208: #endif
209: #if !defined(PETSC_MISSING_SIGILL)
210: signal(SIGILL, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
211: #endif
212: #if !defined(PETSC_MISSING_SIGINT)
213: /* signal(SIGINT, PETSC_SIGNAL_CAST PetscSignalHandler_Private); */
214: #endif
215: #if !defined(PETSC_MISSING_SIGPIPE)
216: signal(SIGPIPE, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
217: #endif
218: #if !defined(PETSC_MISSING_SIGQUIT)
219: signal(SIGQUIT, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
220: #endif
221: #if !defined(PETSC_MISSING_SIGSEGV)
222: signal(SIGSEGV, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
223: #endif
224: #if !defined(PETSC_MISSING_SIGSYS)
225: signal(SIGSYS, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
226: #endif
227: #if !defined(PETSC_MISSING_SIGTERM)
228: signal(SIGTERM, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
229: #endif
230: #if !defined(PETSC_MISSING_SIGTRAP)
231: signal(SIGTRAP, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
232: #endif
233: #if !defined(PETSC_MISSING_SIGTSTP)
234: /* signal(SIGTSTP, PETSC_SIGNAL_CAST PetscSignalHandler_Private); */
235: #endif
236: #if !defined(PETSC_MISSING_SIGURG)
237: signal(SIGURG, PETSC_SIGNAL_CAST PetscSignalHandler_Private);
238: #endif
239: #if !defined(PETSC_MISSING_SIGUSR1)
240: /* signal(SIGUSR1, PETSC_SIGNAL_CAST PetscSignalHandler_Private); */
241: #endif
242: #if !defined(PETSC_MISSING_SIGUSR2)
243: /* signal(SIGUSR2, PETSC_SIGNAL_CAST PetscSignalHandler_Private); */
244: #endif
245: SignalSet = PETSC_TRUE;
246: }
247: if (!routine) {
248: #if !defined(PETSC_MISSING_SIGALRM)
249: /* signal(SIGALRM, 0); */
250: #endif
251: #if !defined(PETSC_MISSING_SIGBUS)
252: signal(SIGBUS, 0);
253: #endif
254: #if !defined(PETSC_MISSING_SIGCONT)
255: /* signal(SIGCONT, 0); */
256: #endif
257: #if !defined(PETSC_MISSING_SIGFPE)
258: signal(SIGFPE, 0);
259: #endif
260: #if !defined(PETSC_MISSING_SIGHUP)
261: signal(SIGHUP, 0);
262: #endif
263: #if !defined(PETSC_MISSING_SIGILL)
264: signal(SIGILL, 0);
265: #endif
266: #if !defined(PETSC_MISSING_SIGINT)
267: /* signal(SIGINT, 0); */
268: #endif
269: #if !defined(PETSC_MISSING_SIGPIPE)
270: signal(SIGPIPE, 0);
271: #endif
272: #if !defined(PETSC_MISSING_SIGQUIT)
273: signal(SIGQUIT, 0);
274: #endif
275: #if !defined(PETSC_MISSING_SIGSEGV)
276: signal(SIGSEGV, 0);
277: #endif
278: #if !defined(PETSC_MISSING_SIGSYS)
279: signal(SIGSYS, 0);
280: #endif
281: #if !defined(PETSC_MISSING_SIGTERM)
282: signal(SIGTERM, 0);
283: #endif
284: #if !defined(PETSC_MISSING_SIGTRAP)
285: signal(SIGTRAP, 0);
286: #endif
287: #if !defined(PETSC_MISSING_SIGTSTP)
288: /* signal(SIGTSTP, 0); */
289: #endif
290: #if !defined(PETSC_MISSING_SIGURG)
291: signal(SIGURG, 0);
292: #endif
293: #if !defined(PETSC_MISSING_SIGUSR1)
294: /* signal(SIGUSR1, 0); */
295: #endif
296: #if !defined(PETSC_MISSING_SIGUSR2)
297: /* signal(SIGUSR2, 0); */
298: #endif
299: SignalSet = PETSC_FALSE;
300: }
301: PetscNew(&newsh);
302: if (sh) {
303: if (sh->classid != SIGNAL_CLASSID) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_COR,"Signal object has been corrupted");
304: newsh->previous = sh;
305: } else newsh->previous = 0;
306: newsh->handler = routine;
307: newsh->ctx = ctx;
308: newsh->classid = SIGNAL_CLASSID;
309: sh = newsh;
310: return(0);
311: }
313: /*@
314: PetscPopSignalHandler - Removes the most last signal handler that was pushed.
315: If no signal handlers are left on the stack it will remove the PETSc signal handler.
316: (That is PETSc will no longer catch signals).
318: Not Collective
320: Level: developer
322: Concepts: signal handler^setting
324: .seealso: PetscPushSignalHandler()
326: @*/
327: PetscErrorCode PetscPopSignalHandler(void)
328: {
329: struct SH *tmp;
333: if (!sh) return(0);
334: if (sh->classid != SIGNAL_CLASSID) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_COR,"Signal object has been corrupted");
336: tmp = sh;
337: sh = sh->previous;
338: PetscFree(tmp);
339: if (!sh || !sh->handler) {
340: #if !defined(PETSC_MISSING_SIGALRM)
341: /* signal(SIGALRM, 0); */
342: #endif
343: #if !defined(PETSC_MISSING_SIGBUS)
344: signal(SIGBUS, 0);
345: #endif
346: #if !defined(PETSC_MISSING_SIGCONT)
347: /* signal(SIGCONT, 0); */
348: #endif
349: #if !defined(PETSC_MISSING_SIGFPE)
350: signal(SIGFPE, 0);
351: #endif
352: #if !defined(PETSC_MISSING_SIGHUP)
353: signal(SIGHUP, 0);
354: #endif
355: #if !defined(PETSC_MISSING_SIGILL)
356: signal(SIGILL, 0);
357: #endif
358: #if !defined(PETSC_MISSING_SIGINT)
359: /* signal(SIGINT, 0); */
360: #endif
361: #if !defined(PETSC_MISSING_SIGPIPE)
362: signal(SIGPIPE, 0);
363: #endif
364: #if !defined(PETSC_MISSING_SIGQUIT)
365: signal(SIGQUIT, 0);
366: #endif
367: #if !defined(PETSC_MISSING_SIGSEGV)
368: signal(SIGSEGV, 0);
369: #endif
370: #if !defined(PETSC_MISSING_SIGSYS)
371: signal(SIGSYS, 0);
372: #endif
373: #if !defined(PETSC_MISSING_SIGTERM)
374: signal(SIGTERM, 0);
375: #endif
376: #if !defined(PETSC_MISSING_SIGTRAP)
377: signal(SIGTRAP, 0);
378: #endif
379: #if !defined(PETSC_MISSING_SIGTSTP)
380: /* signal(SIGTSTP, 0); */
381: #endif
382: #if !defined(PETSC_MISSING_SIGURG)
383: signal(SIGURG, 0);
384: #endif
385: #if !defined(PETSC_MISSING_SIGUSR1)
386: /* signal(SIGUSR1, 0); */
387: #endif
388: #if !defined(PETSC_MISSING_SIGUSR2)
389: /* signal(SIGUSR2, 0); */
390: #endif
391: SignalSet = PETSC_FALSE;
392: } else {
393: SignalSet = PETSC_TRUE;
394: }
395: return(0);
396: }
399: #if defined(PETSC_HAVE_SETJMP_H) && defined(PETSC_HAVE_SIGINFO_T)
400: #include <setjmp.h>
401: PETSC_VISIBILITY_INTERNAL jmp_buf PetscSegvJumpBuf;
402: /*
403: This routine is called if a segmentation violation, i.e. inaccessible memory access
406: It simply unrolls the UNIX signal and returns to the location where setjump(PetscSeqvJumpBuf) is declared.
407: */
408: PETSC_INTERN void PetscSegv_sigaction(int signal, siginfo_t *si, void *arg)
409: {
410: longjmp(PetscSegvJumpBuf,1);
411: return;
412: }
413: #endif