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Diff for /gforth/engine/signals.c between versions 1.12 and 1.18

version 1.12, 2001/09/15 20:40:47 version 1.18, 2002/11/02 15:26:03
Line 52  UCell rows=DEFAULTROWS; Line 52  UCell rows=DEFAULTROWS;
 /* systems that don't have SA_NODEFER hopefully don't block anyway */  /* systems that don't have SA_NODEFER hopefully don't block anyway */
 #endif  #endif
   
   #ifndef SA_ONSTACK
   #define SA_ONSTACK 0
   #endif
   
 #ifdef SA_SIGINFO  #ifdef SA_SIGINFO
 void install_signal_handler(int sig, void (*handler)(int, siginfo_t *, void *))  void install_signal_handler(int sig, void (*handler)(int, siginfo_t *, void *))
      /* installs three-argument signal handler for sig */       /* installs three-argument signal handler for sig */
Line 60  void install_signal_handler(int sig, voi Line 64  void install_signal_handler(int sig, voi
   
   action.sa_sigaction=handler;    action.sa_sigaction=handler;
   sigemptyset(&action.sa_mask);    sigemptyset(&action.sa_mask);
   action.sa_flags=SA_RESTART|SA_NODEFER|SA_SIGINFO; /* pass siginfo */    action.sa_flags=SA_RESTART|SA_NODEFER|SA_SIGINFO|SA_ONSTACK; /* pass siginfo */
   sigaction(sig, &action, NULL);    sigaction(sig, &action, NULL);
 }  }
 #endif  #endif
Line 73  Sigfunc *bsd_signal(int signo, Sigfunc * Line 77  Sigfunc *bsd_signal(int signo, Sigfunc *
   
   act.sa_handler=func;    act.sa_handler=func;
   sigemptyset(&act.sa_mask);    sigemptyset(&act.sa_mask);
   act.sa_flags=SA_NODEFER;    act.sa_flags=SA_NODEFER; /* SA_ONSTACK does not work for graceful_exit */
   if (sigaction(signo,&act,&oact) < 0)    if (sigaction(signo,&act,&oact) < 0)
     return SIG_ERR;      return SIG_ERR;
   else    else
Line 114  static void fpe_handler(int sig, siginfo Line 118  static void fpe_handler(int sig, siginfo
   int code;    int code;
   
   switch(info->si_code) {    switch(info->si_code) {
   #ifdef FPE_INTDIV
   case FPE_INTDIV: code=-10; break; /* integer divide by zero */    case FPE_INTDIV: code=-10; break; /* integer divide by zero */
   #endif
   #ifdef FPE_INTOVF
   case FPE_INTOVF: code=-11; break; /* integer overflow */    case FPE_INTOVF: code=-11; break; /* integer overflow */
   #endif
   case FPE_FLTDIV: code=-42; break; /* floating point divide by zero */    case FPE_FLTDIV: code=-42; break; /* floating point divide by zero */
   case FPE_FLTOVF: code=-43; break; /* floating point overflow  */    case FPE_FLTOVF: code=-43; break; /* floating point overflow  */
   case FPE_FLTUND: code=-54; break; /* floating point underflow  */    case FPE_FLTUND: code=-54; break; /* floating point underflow  */
   case FPE_FLTRES: code=-41; break; /* floating point inexact result  */    case FPE_FLTRES: code=-41; break; /* floating point inexact result  */
   #if 0 /* defined by Unix95, but unnecessary */
   case FPE_FLTINV: /* invalid floating point operation  */    case FPE_FLTINV: /* invalid floating point operation  */
   case FPE_FLTSUB: /* subscript out of range  */    case FPE_FLTSUB: /* subscript out of range  */
   #endif
   default: code=-55; break;    default: code=-55; break;
   }    }
   longjmp(throw_jmp_buf,code);    longjmp(throw_jmp_buf,code);
Line 356  void install_signal_handlers(void) Line 366  void install_signal_handlers(void)
   };    };
   int i;    int i;
   void (*throw_handler)() = die_on_signal ? graceful_exit : signal_throw;    void (*throw_handler)() = die_on_signal ? graceful_exit : signal_throw;
   #ifdef SIGSTKSZ 
     stack_t sigstack;
     int sas_retval=-1;
   
     sigstack.ss_size=SIGSTKSZ;
     if ((sigstack.ss_sp = my_alloc(sigstack.ss_size)) != NULL) {
       sigstack.ss_flags=0;
       sas_retval=sigaltstack(&sigstack,(stack_t *)0);
     }
     if (debug)
       fprintf(stderr,"sigaltstack: %s\n",strerror(sas_retval));
   #endif
   
 #define DIM(X)          (sizeof (X) / sizeof *(X))  #define DIM(X)          (sizeof (X) / sizeof *(X))
 /*  /*
Line 367  void install_signal_handlers(void) Line 389  void install_signal_handlers(void)
   for (i = 0; i < DIM (sigs_to_quit); i++)    for (i = 0; i < DIM (sigs_to_quit); i++)
     bsd_signal(sigs_to_quit [i], graceful_exit);      bsd_signal(sigs_to_quit [i], graceful_exit);
 #ifdef SA_SIGINFO  #ifdef SA_SIGINFO
   install_signal_handler(SIGFPE, fpe_handler);    if (!die_on_signal) {
   install_signal_handler(SIGSEGV, segv_handler);      install_signal_handler(SIGFPE, fpe_handler);
       install_signal_handler(SIGSEGV, segv_handler);
     }
 #endif  #endif
 #ifdef SIGCONT  #ifdef SIGCONT
     bsd_signal(SIGCONT, termprep);      bsd_signal(SIGCONT, termprep);
Removed from v.1.12  
changed lines
  Added in v.1.18

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