1 | /**************************************** |
---|
2 | * Computer Algebra System SINGULAR * |
---|
3 | ****************************************/ |
---|
4 | /* |
---|
5 | * ABSTRACT - interupt handling |
---|
6 | */ |
---|
7 | #include "kernel/mod2.h" |
---|
8 | |
---|
9 | #include "omalloc/omalloc.h" |
---|
10 | |
---|
11 | #include "reporter/si_signals.h" |
---|
12 | #include "Singular/fevoices.h" |
---|
13 | |
---|
14 | #include "misc/options.h" |
---|
15 | #include "Singular/tok.h" |
---|
16 | #include "Singular/ipshell.h" |
---|
17 | #include "Singular/cntrlc.h" |
---|
18 | #include "Singular/feOpt.h" |
---|
19 | #include "Singular/misc_ip.h" |
---|
20 | #include "Singular/links/silink.h" |
---|
21 | #include "Singular/links/ssiLink.h" |
---|
22 | |
---|
23 | /* undef, if you don't want GDB to come up on error */ |
---|
24 | |
---|
25 | #define CALL_GDB |
---|
26 | |
---|
27 | #if defined(__OPTIMIZE__) && defined(CALL_GDB) |
---|
28 | #undef CALL_GDB |
---|
29 | #endif |
---|
30 | |
---|
31 | #ifdef TIME_WITH_SYS_TIME |
---|
32 | #include <time.h> |
---|
33 | #ifdef HAVE_SYS_TIME_H |
---|
34 | #include <sys/time.h> |
---|
35 | #endif |
---|
36 | #else |
---|
37 | #ifdef HAVE_SYS_TIME_H |
---|
38 | #include <sys/time.h> |
---|
39 | #else |
---|
40 | #include <time.h> |
---|
41 | #endif |
---|
42 | #endif |
---|
43 | #ifdef HAVE_SYS_TIMES_H |
---|
44 | #include <sys/times.h> |
---|
45 | #endif |
---|
46 | |
---|
47 | #define INTERACTIVE 0 |
---|
48 | #define STACK_TRACE 1 |
---|
49 | |
---|
50 | #ifdef CALL_GDB |
---|
51 | static void debug (int); |
---|
52 | static void debug_stop (char *const*args); |
---|
53 | #endif |
---|
54 | #ifndef __OPTIMIZE__ |
---|
55 | static void stack_trace (char *const*args); |
---|
56 | #endif |
---|
57 | |
---|
58 | si_link pipeLastLink=NULL; |
---|
59 | BOOLEAN singular_in_batchmode=FALSE; |
---|
60 | |
---|
61 | void sig_pipe_hdl(int /*sig*/) |
---|
62 | { |
---|
63 | if (pipeLastLink!=NULL) |
---|
64 | { |
---|
65 | slClose(pipeLastLink); |
---|
66 | pipeLastLink=NULL; |
---|
67 | WerrorS("pipe failed"); |
---|
68 | } |
---|
69 | } |
---|
70 | |
---|
71 | volatile BOOLEAN do_shutdown = FALSE; |
---|
72 | volatile int defer_shutdown = 0; |
---|
73 | |
---|
74 | void sig_term_hdl(int /*sig*/) |
---|
75 | { |
---|
76 | do_shutdown = TRUE; |
---|
77 | if (!defer_shutdown) |
---|
78 | { |
---|
79 | m2_end(1); |
---|
80 | } |
---|
81 | } |
---|
82 | |
---|
83 | /*---------------------------------------------------------------------* |
---|
84 | * File scope Variables (Variables shared by several functions in |
---|
85 | * the same file ) |
---|
86 | * |
---|
87 | *---------------------------------------------------------------------*/ |
---|
88 | /* data */ |
---|
89 | jmp_buf si_start_jmpbuf; |
---|
90 | int siRandomStart; |
---|
91 | short si_restart=0; |
---|
92 | |
---|
93 | typedef void (*si_hdl_typ)(int); |
---|
94 | |
---|
95 | |
---|
96 | /*0 implementation*/ |
---|
97 | /*---------------------------------------------------------------------* |
---|
98 | * Functions declarations |
---|
99 | * |
---|
100 | *---------------------------------------------------------------------*/ |
---|
101 | void sigint_handler(int /*sig*/); |
---|
102 | |
---|
103 | si_hdl_typ si_set_signal ( int sig, si_hdl_typ signal_handler); |
---|
104 | |
---|
105 | /*---------------------------------------------------------------------*/ |
---|
106 | /** |
---|
107 | * @brief meta function for binding a signal to an handler |
---|
108 | |
---|
109 | @param[in] sig Signal number |
---|
110 | @param[in] signal_handler Pointer to signal handler |
---|
111 | |
---|
112 | @return value of signal() |
---|
113 | **/ |
---|
114 | /*---------------------------------------------------------------------*/ |
---|
115 | si_hdl_typ si_set_signal ( int sig, si_hdl_typ signal_handler) |
---|
116 | { |
---|
117 | #if 0 |
---|
118 | si_hdl_typ retval=signal (sig, (si_hdl_typ)signal_handler); |
---|
119 | if (retval == SIG_ERR) |
---|
120 | { |
---|
121 | fprintf(stderr, "Unable to init signal %d ... exiting...\n", sig); |
---|
122 | } |
---|
123 | si_siginterrupt(sig, 0); |
---|
124 | /*system calls will be restarted if interrupted by the specified |
---|
125 | * signal sig. This is the default behavior in Linux. |
---|
126 | */ |
---|
127 | #else |
---|
128 | struct sigaction new_action,old_action; |
---|
129 | memset(&new_action, 0, sizeof(struct sigaction)); |
---|
130 | |
---|
131 | /* Set up the structure to specify the new action. */ |
---|
132 | new_action.sa_handler = signal_handler; |
---|
133 | if (sig==SIGINT) |
---|
134 | sigemptyset (&new_action.sa_mask); |
---|
135 | else |
---|
136 | new_action.sa_flags = SA_RESTART; |
---|
137 | |
---|
138 | int r=si_sigaction (sig, &new_action, &old_action); |
---|
139 | si_hdl_typ retval=(si_hdl_typ)old_action.sa_handler; |
---|
140 | if (r == -1) |
---|
141 | { |
---|
142 | fprintf(stderr, "Unable to init signal %d ... exiting...\n", sig); |
---|
143 | retval=SIG_ERR; |
---|
144 | } |
---|
145 | #endif |
---|
146 | return retval; |
---|
147 | } /* si_set_signal */ |
---|
148 | |
---|
149 | |
---|
150 | /*---------------------------------------------------------------------*/ |
---|
151 | #if defined(__linux__) && defined(__i386) |
---|
152 | #if !defined(HAVE_SIGCONTEXT) && !defined(HAVE_ASM_SIGCONTEXT_H) |
---|
153 | // we need the following structure sigcontext_struct. |
---|
154 | // if configure finds asm/singcontext.h we assume |
---|
155 | // that this file contains the structure and is included |
---|
156 | // via signal.h |
---|
157 | struct sigcontext_struct { |
---|
158 | unsigned short gs, __gsh; |
---|
159 | unsigned short fs, __fsh; |
---|
160 | unsigned short es, __esh; |
---|
161 | unsigned short ds, __dsh; |
---|
162 | unsigned long edi; |
---|
163 | unsigned long esi; |
---|
164 | unsigned long ebp; |
---|
165 | unsigned long esp; |
---|
166 | unsigned long ebx; |
---|
167 | unsigned long edx; |
---|
168 | unsigned long ecx; |
---|
169 | unsigned long eax; |
---|
170 | unsigned long trapno; |
---|
171 | unsigned long err; |
---|
172 | unsigned long eip; |
---|
173 | unsigned short cs, __csh; |
---|
174 | unsigned long eflags; |
---|
175 | unsigned long esp_at_signal; |
---|
176 | unsigned short ss, __ssh; |
---|
177 | unsigned long i387; |
---|
178 | unsigned long oldmask; |
---|
179 | unsigned long cr2; |
---|
180 | }; |
---|
181 | #endif |
---|
182 | #define HAVE_SIGSTRUCT |
---|
183 | typedef struct sigcontext_struct sigcontext; |
---|
184 | #endif |
---|
185 | |
---|
186 | #if defined(__linux__) && defined(__amd64) |
---|
187 | #define HAVE_SIGSTRUCT |
---|
188 | #endif |
---|
189 | |
---|
190 | |
---|
191 | #if defined(HAVE_SIGSTRUCT) |
---|
192 | /*2---------------------------------------------------------------------*/ |
---|
193 | /** |
---|
194 | * @brief signal handler for run time errors, linux/i386, x86_64 version |
---|
195 | |
---|
196 | @param[in] sig |
---|
197 | @param[in] s |
---|
198 | **/ |
---|
199 | /*---------------------------------------------------------------------*/ |
---|
200 | void sigsegv_handler(int sig, sigcontext s) |
---|
201 | { |
---|
202 | fprintf(stderr,"Singular : signal %d (v: %d):\n",sig,SINGULAR_VERSION); |
---|
203 | if (sig!=SIGINT) |
---|
204 | { |
---|
205 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
---|
206 | fprintf(stderr,"Segment fault/Bus error occurred at %lx because of %lx (r:%d)\n" |
---|
207 | "please inform the authors\n", |
---|
208 | #ifdef __i386__ |
---|
209 | (long)s.eip, |
---|
210 | #else /* x86_64*/ |
---|
211 | (long)s.rip, |
---|
212 | #endif |
---|
213 | (long)s.cr2,siRandomStart); |
---|
214 | } |
---|
215 | #ifdef __OPTIMIZE__ |
---|
216 | if(si_restart<3) |
---|
217 | { |
---|
218 | si_restart++; |
---|
219 | fputs("trying to restart...\n",stderr); |
---|
220 | init_signals(); |
---|
221 | longjmp(si_start_jmpbuf,1); |
---|
222 | } |
---|
223 | #endif /* __OPTIMIZE__ */ |
---|
224 | #ifdef CALL_GDB |
---|
225 | if (sig!=SIGINT) |
---|
226 | { |
---|
227 | if (singular_in_batchmode) debug(STACK_TRACE); |
---|
228 | else debug(INTERACTIVE); |
---|
229 | } |
---|
230 | #endif /* CALL_GDB */ |
---|
231 | exit(0); |
---|
232 | } |
---|
233 | |
---|
234 | /*---------------------------------------------------------------------*/ |
---|
235 | #elif defined(SunOS) /*SPARC_SUNOS*/ |
---|
236 | /*2 |
---|
237 | * signal handler for run time errors, sparc sunos 4 version |
---|
238 | */ |
---|
239 | void sigsegv_handler(int sig, int code, struct sigcontext *scp, char *addr) |
---|
240 | { |
---|
241 | fprintf(stderr,"Singular : signal %d, code %d (v: %d):\n", |
---|
242 | sig,code,SINGULAR_VERSION); |
---|
243 | if ((sig!=SIGINT)&&(sig!=SIGABRT)) |
---|
244 | { |
---|
245 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
---|
246 | fprintf(stderr,"Segment fault/Bus error occurred at %x (r:%d)\n" |
---|
247 | "please inform the authors\n", |
---|
248 | (int)addr,siRandomStart); |
---|
249 | } |
---|
250 | #ifdef __OPTIMIZE__ |
---|
251 | if(si_restart<3) |
---|
252 | { |
---|
253 | si_restart++; |
---|
254 | fputs("trying to restart...\n",stderr); |
---|
255 | init_signals(); |
---|
256 | longjmp(si_start_jmpbuf,1); |
---|
257 | } |
---|
258 | #endif /* __OPTIMIZE__ */ |
---|
259 | #ifdef CALL_GDB |
---|
260 | if (sig!=SIGINT) debug(STACK_TRACE); |
---|
261 | #endif /* CALL_GDB */ |
---|
262 | exit(0); |
---|
263 | } |
---|
264 | |
---|
265 | #else |
---|
266 | |
---|
267 | /*---------------------------------------------------------------------*/ |
---|
268 | /*2 |
---|
269 | * signal handler for run time errors, general version |
---|
270 | */ |
---|
271 | void sigsegv_handler(int sig) |
---|
272 | { |
---|
273 | fprintf(stderr,"Singular : signal %d (v: %d):\n", |
---|
274 | sig,SINGULAR_VERSION); |
---|
275 | if (sig!=SIGINT) |
---|
276 | { |
---|
277 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
---|
278 | fprintf(stderr,"Segment fault/Bus error occurred (r:%d)\n" |
---|
279 | "please inform the authors\n", |
---|
280 | siRandomStart); |
---|
281 | } |
---|
282 | #ifdef __OPTIMIZE__ |
---|
283 | if(si_restart<3) |
---|
284 | { |
---|
285 | si_restart++; |
---|
286 | fputs("trying to restart...\n",stderr); |
---|
287 | init_signals(); |
---|
288 | longjmp(si_start_jmpbuf,1); |
---|
289 | } |
---|
290 | #endif /* __OPTIMIZE__ */ |
---|
291 | #ifdef CALL_GDB |
---|
292 | if (sig!=SIGINT) debug(STACK_TRACE); |
---|
293 | #endif /* CALL_GDB */ |
---|
294 | exit(0); |
---|
295 | } |
---|
296 | #endif |
---|
297 | |
---|
298 | |
---|
299 | /*2 |
---|
300 | * signal handler for SIGINT |
---|
301 | */ |
---|
302 | int sigint_handler_cnt=0; |
---|
303 | void sigint_handler(int /*sig*/) |
---|
304 | { |
---|
305 | mflush(); |
---|
306 | #ifdef HAVE_FEREAD |
---|
307 | if (fe_is_raw_tty) fe_temp_reset(); |
---|
308 | #endif /* HAVE_FEREAD */ |
---|
309 | char default_opt=' '; |
---|
310 | if ((feOptSpec[FE_OPT_CNTRLC].value!=NULL) |
---|
311 | && ((char*)(feOptSpec[FE_OPT_CNTRLC].value))[0]) |
---|
312 | { default_opt=((char*)(feOptSpec[FE_OPT_CNTRLC].value))[0]; } |
---|
313 | loop |
---|
314 | { |
---|
315 | int cnt=0; |
---|
316 | int c; |
---|
317 | |
---|
318 | if (singular_in_batchmode) |
---|
319 | { |
---|
320 | c = 'q'; |
---|
321 | } |
---|
322 | else if (default_opt!=' ') |
---|
323 | { |
---|
324 | c = default_opt; |
---|
325 | } |
---|
326 | else |
---|
327 | { |
---|
328 | fprintf(stderr,"// ** Interrupt at cmd:`%s` in line:'%s'\n", |
---|
329 | Tok2Cmdname(iiOp),my_yylinebuf); |
---|
330 | if (feOptValue(FE_OPT_EMACS) == NULL) |
---|
331 | { |
---|
332 | fputs("abort after this command(a), abort immediately(r), print backtrace(b), continue(c) or quit Singular(q) ?",stderr); |
---|
333 | fflush(stderr);fflush(stdin); |
---|
334 | c = fgetc(stdin); |
---|
335 | } |
---|
336 | else |
---|
337 | { |
---|
338 | c = 'a'; |
---|
339 | } |
---|
340 | } |
---|
341 | |
---|
342 | switch(c) |
---|
343 | { |
---|
344 | case 'q': case EOF: |
---|
345 | m2_end(2); |
---|
346 | case 'r': |
---|
347 | if (sigint_handler_cnt<3) |
---|
348 | { |
---|
349 | sigint_handler_cnt++; |
---|
350 | fputs("** Warning: Singular should be restarted as soon as possible **\n",stderr); |
---|
351 | fflush(stderr); |
---|
352 | extern void my_yy_flush(); |
---|
353 | my_yy_flush(); |
---|
354 | currentVoice=feInitStdin(NULL); |
---|
355 | longjmp(si_start_jmpbuf,1); |
---|
356 | } |
---|
357 | else |
---|
358 | { |
---|
359 | fputs("** tried too often, try another possibility **\n",stderr); |
---|
360 | fflush(stderr); |
---|
361 | } |
---|
362 | break; |
---|
363 | case 'b': |
---|
364 | VoiceBackTrack(); |
---|
365 | break; |
---|
366 | case 'a': |
---|
367 | siCntrlc++; |
---|
368 | case 'c': |
---|
369 | if ((feOptValue(FE_OPT_EMACS) == NULL) && (default_opt!=' ')) |
---|
370 | { |
---|
371 | /* Read until a newline or EOF */ |
---|
372 | while (c != EOF && c != '\n') c = fgetc(stdin); |
---|
373 | } |
---|
374 | si_set_signal(SIGINT ,(si_hdl_typ)sigint_handler); |
---|
375 | return; |
---|
376 | //siCntrlc ++; |
---|
377 | //if (siCntrlc>2) si_set_signal(SIGINT,(si_hdl_typ) sigsegv_handler); |
---|
378 | //else si_set_signal(SIGINT,(si_hdl_typ) sigint_handler); |
---|
379 | } |
---|
380 | cnt++; |
---|
381 | if(cnt>5) m2_end(2); |
---|
382 | } |
---|
383 | } |
---|
384 | |
---|
385 | //void test_int() |
---|
386 | //{ |
---|
387 | // if (siCntrlc!=0) |
---|
388 | // { |
---|
389 | // int saveecho = si_echo; |
---|
390 | // siCntrlc = FALSE; |
---|
391 | // si_set_signal(SIGINT ,sigint_handler); |
---|
392 | // iiDebug(); |
---|
393 | // si_echo = saveecho; |
---|
394 | // } |
---|
395 | //} |
---|
396 | |
---|
397 | # ifndef __OPTIMIZE__ |
---|
398 | volatile int si_stop_stack_trace_x; |
---|
399 | # ifdef CALL_GDB |
---|
400 | static void debug (int method) |
---|
401 | { |
---|
402 | if (feOptValue(FE_OPT_NO_TTY)) |
---|
403 | { |
---|
404 | dReportError("Caught Signal 11"); |
---|
405 | return; |
---|
406 | } |
---|
407 | int pid; |
---|
408 | char buf[16]; |
---|
409 | char * args[4] = { (char*)"gdb", (char*)"Singular", NULL, NULL }; |
---|
410 | |
---|
411 | #ifdef HAVE_FEREAD |
---|
412 | if (fe_is_raw_tty) fe_temp_reset(); |
---|
413 | #endif /* HAVE_FEREAD */ |
---|
414 | |
---|
415 | sprintf (buf, "%d", getpid ()); |
---|
416 | |
---|
417 | args[2] = buf; |
---|
418 | |
---|
419 | pid = fork (); |
---|
420 | if (pid == 0) |
---|
421 | { |
---|
422 | switch (method) |
---|
423 | { |
---|
424 | case INTERACTIVE: |
---|
425 | fputs ("\n\nquit with \"p si_stop_stack_trace_x=0\"\n\n\n",stderr); |
---|
426 | debug_stop (args); |
---|
427 | break; |
---|
428 | case STACK_TRACE: |
---|
429 | fputs ("stack_trace\n",stderr); |
---|
430 | stack_trace (args); |
---|
431 | break; |
---|
432 | default: |
---|
433 | // should not be reached: |
---|
434 | exit(1); |
---|
435 | } |
---|
436 | } |
---|
437 | else if (pid == -1) |
---|
438 | { |
---|
439 | perror ("could not fork"); |
---|
440 | return; |
---|
441 | } |
---|
442 | |
---|
443 | si_stop_stack_trace_x = 1; |
---|
444 | while (si_stop_stack_trace_x) ; |
---|
445 | } |
---|
446 | |
---|
447 | static void debug_stop (char *const*args) |
---|
448 | { |
---|
449 | execvp (args[0], args); |
---|
450 | perror ("exec failed"); |
---|
451 | _exit (0); |
---|
452 | } |
---|
453 | # endif /* CALL_GDB */ |
---|
454 | |
---|
455 | static void stack_trace (char *const*args) |
---|
456 | { |
---|
457 | int pid; |
---|
458 | int in_fd[2]; |
---|
459 | int out_fd[2]; |
---|
460 | fd_set fdset; |
---|
461 | fd_set readset; |
---|
462 | struct timeval tv; |
---|
463 | int sel, index, state; |
---|
464 | char buffer[256]; |
---|
465 | char c; |
---|
466 | |
---|
467 | if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1)) |
---|
468 | { |
---|
469 | perror ("could open pipe"); |
---|
470 | m2_end(999); |
---|
471 | } |
---|
472 | |
---|
473 | pid = fork (); |
---|
474 | if (pid == 0) |
---|
475 | { |
---|
476 | si_close (0); si_dup2 (in_fd[0],0); /* set the stdin to the in pipe */ |
---|
477 | si_close (1); si_dup2 (out_fd[1],1); /* set the stdout to the out pipe */ |
---|
478 | si_close (2); si_dup2 (out_fd[1],2); /* set the stderr to the out pipe */ |
---|
479 | |
---|
480 | execvp (args[0], args); /* exec gdb */ |
---|
481 | perror ("exec failed"); |
---|
482 | m2_end(999); |
---|
483 | } |
---|
484 | else if (pid == -1) |
---|
485 | { |
---|
486 | perror ("could not fork"); |
---|
487 | m2_end(999); |
---|
488 | } |
---|
489 | |
---|
490 | FD_ZERO (&fdset); |
---|
491 | FD_SET (out_fd[0], &fdset); |
---|
492 | |
---|
493 | si_write (in_fd[1], "backtrace\n", 10); |
---|
494 | si_write (in_fd[1], "p si_stop_stack_trace_x = 0\n", 28); |
---|
495 | si_write (in_fd[1], "quit\n", 5); |
---|
496 | |
---|
497 | index = 0; |
---|
498 | state = 0; |
---|
499 | |
---|
500 | loop |
---|
501 | { |
---|
502 | readset = fdset; |
---|
503 | tv.tv_sec = 1; |
---|
504 | tv.tv_usec = 0; |
---|
505 | |
---|
506 | sel = si_select (FD_SETSIZE, &readset, NULL, NULL, &tv); |
---|
507 | if (sel == -1) |
---|
508 | break; |
---|
509 | |
---|
510 | if ((sel > 0) && (FD_ISSET (out_fd[0], &readset))) |
---|
511 | { |
---|
512 | if (si_read (out_fd[0], &c, 1)) |
---|
513 | { |
---|
514 | switch (state) |
---|
515 | { |
---|
516 | case 0: |
---|
517 | if (c == '#') |
---|
518 | { |
---|
519 | state = 1; |
---|
520 | index = 0; |
---|
521 | buffer[index++] = c; |
---|
522 | } |
---|
523 | break; |
---|
524 | case 1: |
---|
525 | buffer[index++] = c; |
---|
526 | if ((c == '\n') || (c == '\r')) |
---|
527 | { |
---|
528 | buffer[index] = 0; |
---|
529 | fputs (buffer,stderr); |
---|
530 | state = 0; |
---|
531 | index = 0; |
---|
532 | } |
---|
533 | break; |
---|
534 | default: |
---|
535 | break; |
---|
536 | } |
---|
537 | } |
---|
538 | } |
---|
539 | else if (si_stop_stack_trace_x==0) |
---|
540 | break; |
---|
541 | } |
---|
542 | |
---|
543 | si_close (in_fd[0]); |
---|
544 | si_close (in_fd[1]); |
---|
545 | si_close (out_fd[0]); |
---|
546 | si_close (out_fd[1]); |
---|
547 | m2_end(0); |
---|
548 | } |
---|
549 | |
---|
550 | # endif /* !__OPTIMIZE__ */ |
---|
551 | |
---|
552 | /*2 |
---|
553 | * init signal handlers |
---|
554 | */ |
---|
555 | void init_signals() |
---|
556 | { |
---|
557 | #ifdef SIGSEGV |
---|
558 | si_set_signal(SIGSEGV,(si_hdl_typ)sigsegv_handler); |
---|
559 | #endif |
---|
560 | #ifdef SIGBUS |
---|
561 | si_set_signal(SIGBUS, (si_hdl_typ)sigsegv_handler); |
---|
562 | #endif |
---|
563 | #ifdef SIGFPE |
---|
564 | si_set_signal(SIGFPE, (si_hdl_typ)sigsegv_handler); |
---|
565 | #endif |
---|
566 | #ifdef SIGILL |
---|
567 | si_set_signal(SIGILL, (si_hdl_typ)sigsegv_handler); |
---|
568 | #endif |
---|
569 | #ifdef SIGIOT |
---|
570 | si_set_signal(SIGIOT, (si_hdl_typ)sigsegv_handler); |
---|
571 | #endif |
---|
572 | si_set_signal(SIGINT ,(si_hdl_typ)sigint_handler); |
---|
573 | si_set_signal(SIGCHLD, (si_hdl_typ)sig_chld_hdl); |
---|
574 | si_set_signal(SIGPIPE, (si_hdl_typ)sig_pipe_hdl); |
---|
575 | si_set_signal(SIGTERM, (si_hdl_typ)sig_term_hdl); |
---|
576 | } |
---|
577 | |
---|