v4.0/src/TOOLS/BLD/INC/SIGNAL.H

   1 /***
   2 *signal.h - defines signal values and routines
   3 *
   4 *   Copyright (c) 1985-1988, Microsoft Corporation.  All rights reserved.
   5 *
   6 *Purpose:
   7 *   This file defines the signal values and declares the signal functions.
   8 *   [ANSI/System V]
   9 *
  10 *******************************************************************************/
  11
  12
  13 #ifndef NO_EXT_KEYS /* extensions enabled */
  14     #define _CDECL  cdecl
  15 #else /* extensions not enabled */
  16     #define _CDECL
  17 #endif /* NO_EXT_KEYS */
  18
  19 #ifndef _SIG_ATOMIC_T_DEFINED
  20 typedef int sig_atomic_t;
  21 #define _SIG_ATOMIC_T_DEFINED
  22 #endif
  23
  24
  25 #define NSIG 23     /* maximum signal number + 1 */
  26
  27 /* signal types */
  28 /* SIGINT, SIGFPE, SIGILL, SIGSEGV, and SIGABRT are recognized on DOS 3.x */
  29
  30 #define SIGINT      2   /* interrupt - corresponds to DOS 3.x int 23H */
  31 #define SIGILL      4   /* illegal instruction - invalid function image */
  32 #define SIGFPE      8   /* floating point exception */
  33 #define SIGSEGV     11  /* segment violation */
  34 #define SIGTERM     15  /* Software termination signal from kill */
  35 #define SIGUSR1     16  /* User defined signal 1 */
  36 #define SIGUSR2     17  /* User defined signal 2 */
  37 #define SIGUSR3     20  /* User defined signal 3 */
  38 #define SIGBREAK    21  /* Ctrl-Break sequence */
  39 #define SIGABRT     22  /* abnormal termination triggered by abort call */
  40
  41
  42 /* signal action codes */
  43 /* SIG_DFL and SIG_IGN are recognized on DOS 3.x */
  44
  45 #define SIG_DFL (void (*)())0 /* default signal action */
  46 #define SIG_IGN (void (*)())1 /* ignore */
  47 #define SIG_SGE (void (*)())3 /* signal gets error */
  48 #define SIG_ACK (void (*)())4 /* error if handler not setup */
  49
  50
  51 /* signal error value (returned by signal call on error) */
  52
  53 #define SIG_ERR (void (*)())-1    /* signal error value */
  54
  55
  56 /* function prototypes */
  57
  58 void (_CDECL * _CDECL signal(int, void (_CDECL *)()))();
  59 int _CDECL raise(int);