reactos/include/crtdll/signal.h

   1 /*
   2  * signal.h
   3  *
   4  * A way to set handlers for exceptional conditions (also known as signals).
   5  *
   6  * This file is part of the Mingw32 package.
   7  *
   8  * Contributors:
   9  *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
  10  *
  11  *  THIS SOFTWARE IS NOT COPYRIGHTED
  12  *
  13  *  This source code is offered for use in the public domain. You may
  14  *  use, modify or distribute it freely.
  15  *
  16  *  This code is distributed in the hope that it will be useful but
  17  *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  18  *  DISCLAMED. This includes but is not limited to warranties of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  * $Revision: 1.3 $
  22  * $Author: robd $
  23  * $Date: 2002/11/24 18:09:56 $
  24  *
  25  */
  26 /* added some extra signal constants */
  27 #ifndef _SIGNAL_H_
  28 #define _SIGNAL_H_
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35  * The prototypes (below) are the easy part. The hard part is figuring
  36  * out what signals are available and what numbers they are assigned
  37  * along with appropriate values of SIG_DFL and SIG_IGN.
  38  */
  39
  40 /*
  41  * A pointer to a signal handler function. A signal handler takes a
  42  * single int, which is the signal it handles.
  43  */
  44 typedef void (*_p_sig_fn_t)(int nSig);
  45
  46 /*
  47  * These are special values of signal handler pointers which are
  48  * used to send a signal to the default handler (SIG_DFL), ignore
  49  * the signal (SIG_IGN), or indicate an error return (SIG_ERR).
  50  */
  51 #define SIG_DFL ((_p_sig_fn_t) 0)
  52 #define SIG_IGN ((_p_sig_fn_t) 1)
  53 #define SIG_ERR ((_p_sig_fn_t) -1)
  54
  55 /*
  56  * The actual signal values. Using other values with signal
  57  * produces a SIG_ERR return value.
  58  *
  59  * NOTE: SIGINT is produced when the user presses Ctrl-C.
  60  *       SIGILL has not been tested.
  61  *       SIGFPE doesn't seem to work?
  62  *       SIGSEGV does not catch writing to a NULL pointer (that shuts down
  63  *               your app; can you say "segmentation violation core dump"?).
  64  *       SIGTERM comes from what kind of termination request exactly?
  65  *       SIGBREAK is indeed produced by pressing Ctrl-Break.
  66  *       SIGABRT is produced by calling abort.
  67  * TODO: The above results may be related to not installing an appropriate
  68  *       structured exception handling frame. Results may be better if I ever
  69  *       manage to get the SEH stuff down.
  70  */
  71 #define SIGINT          2       /* Interactive attention */
  72 #define SIGILL          4       /* Illegal instruction */
  73 #define SIGFPE          8       /* Floating point error */
  74 #define SIGSEGV         11      /* Segmentation violation */
  75 #define SIGTERM         15      /* Termination request */
  76 #define SIGBREAK        21      /* Control-break */
  77 #define SIGABRT         22      /* Abnormal termination (abort) */
  78
  79 #define SIGALRM 293
  80 #define SIGHUP  294
  81 /* SIGINT is ansi */
  82 #define SIGKILL 296
  83 #define SIGPIPE 297
  84 #define SIGQUIT 298
  85 #define SIGUSR1 299
  86 #define SIGUSR2 300
  87
  88 #define SIGNOFP 301
  89 #define SIGTRAP 302
  90 #define SIGTIMR 303     /* Internal for setitimer (SIGALRM, SIGPROF) */
  91 #define SIGPROF 304
  92 #define SIGMAX  320
  93
  94 /*
  95  * Call signal to set the signal handler for signal sig to the
  96  * function pointed to by handler. Returns a pointer to the
  97  * previous handler, or SIG_ERR if an error occurs. Initially
  98  * unhandled signals defined above will return SIG_DFL.
  99  */
 100 _p_sig_fn_t     signal(int sig, _p_sig_fn_t func);
 101
 102 /*
 103  * Raise the signal indicated by sig. Returns non-zero on success.
 104  */
 105 int     raise (int sig);
 106
 107 #ifdef  __cplusplus
 108 }
 109 #endif
 110
 111 #endif