#include <corecrt.h>

Include dependency graph for signal.h:

Macros
#define	_SIG_ATOMIC_T_DEFINED

#define	NSIG 23

#define	SIGHUP 1 /* hangup */

#define	SIGINT 2

#define	SIGQUIT 3 /* quit */

#define	SIGILL 4

#define	SIGTRAP 5 /* trace trap (not reset when caught) */

#define	SIGIOT 6 /* IOT instruction */

#define	SIGABRT 6 /* used by abort, replace SIGIOT in the future */

#define	SIGEMT 7 /* EMT instruction */

#define	SIGFPE 8

#define	SIGKILL 9 /* kill (cannot be caught or ignored) */

#define	SIGBUS 10 /* bus error */

#define	SIGSEGV 11

#define	SIGSYS 12 /* bad argument to system call */

#define	SIGPIPE 13 /* write on a pipe with no one to read it */

#define	SIGTERM 15

#define	SIGBREAK 21

#define	SIGABRT2 22

#define	SIGABRT_COMPAT 6

#define	SIG_DFL (__p_sig_fn_t)0

#define	SIG_IGN (__p_sig_fn_t)1

#define	SIG_GET (__p_sig_fn_t)2

#define	SIG_SGE (__p_sig_fn_t)3

#define	SIG_ACK (__p_sig_fn_t)4

#define	SIG_ERR (__p_sig_fn_t)-1

#define	_pxcptinfoptrs (*__pxcptinfoptrs())

Typedefs
typedef int	sig_atomic_t

typedef void(*	__p_sig_fn_t) (int)

Functions
void **__cdecl	__pxcptinfoptrs (void)

__p_sig_fn_t __cdecl	signal (int _SigNum, __p_sig_fn_t _Func)

int __cdecl	raise (int _SigNum)

Macro Definition Documentation

◆ _pxcptinfoptrs

#define _pxcptinfoptrs (*__pxcptinfoptrs())

Definition at line 55 of file signal.h.

◆ _SIG_ATOMIC_T_DEFINED

#define _SIG_ATOMIC_T_DEFINED

This file has no copyright assigned and is placed in the Public Domain. This file is part of the w64 mingw-runtime package. No warranty is given; refer to the file DISCLAIMER within this package.

Definition at line 16 of file signal.h.

◆ NSIG

#define NSIG 23

Definition at line 20 of file signal.h.

◆ SIG_ACK

#define SIG_ACK (__p_sig_fn_t)4

Definition at line 51 of file signal.h.

◆ SIG_DFL

#define SIG_DFL (__p_sig_fn_t)0

Definition at line 47 of file signal.h.

◆ SIG_ERR

#define SIG_ERR (__p_sig_fn_t)-1

Definition at line 52 of file signal.h.

◆ SIG_GET

#define SIG_GET (__p_sig_fn_t)2

Definition at line 49 of file signal.h.

◆ SIG_IGN

#define SIG_IGN (__p_sig_fn_t)1

Definition at line 48 of file signal.h.

◆ SIG_SGE

#define SIG_SGE (__p_sig_fn_t)3

Definition at line 50 of file signal.h.

◆ SIGABRT

#define SIGABRT 6 /* used by abort, replace SIGIOT in the future */

Definition at line 28 of file signal.h.

◆ SIGABRT2

#define SIGABRT2 22

Definition at line 41 of file signal.h.

◆ SIGABRT_COMPAT

#define SIGABRT_COMPAT 6

Definition at line 43 of file signal.h.

◆ SIGBREAK

#define SIGBREAK 21

Definition at line 40 of file signal.h.

◆ SIGBUS

#define SIGBUS 10 /* bus error */

Definition at line 32 of file signal.h.

◆ SIGEMT

#define SIGEMT 7 /* EMT instruction */

Definition at line 29 of file signal.h.

◆ SIGFPE

#define SIGFPE 8

Definition at line 30 of file signal.h.

◆ SIGHUP

#define SIGHUP 1 /* hangup */

Definition at line 22 of file signal.h.

◆ SIGILL

#define SIGILL 4

Definition at line 25 of file signal.h.

◆ SIGINT

#define SIGINT 2

Definition at line 23 of file signal.h.

◆ SIGIOT

#define SIGIOT 6 /* IOT instruction */

Definition at line 27 of file signal.h.

◆ SIGKILL

#define SIGKILL 9 /* kill (cannot be caught or ignored) */

Definition at line 31 of file signal.h.

◆ SIGPIPE

#define SIGPIPE 13 /* write on a pipe with no one to read it */

Definition at line 35 of file signal.h.

◆ SIGQUIT

#define SIGQUIT 3 /* quit */

Definition at line 24 of file signal.h.

◆ SIGSEGV

#define SIGSEGV 11

Definition at line 33 of file signal.h.

◆ SIGSYS

#define SIGSYS 12 /* bad argument to system call */

Definition at line 34 of file signal.h.

◆ SIGTERM

#define SIGTERM 15

Definition at line 39 of file signal.h.

◆ SIGTRAP

#define SIGTRAP 5 /* trace trap (not reset when caught) */

Definition at line 26 of file signal.h.

Typedef Documentation

◆ __p_sig_fn_t

typedef void(* __p_sig_fn_t) (int)

Definition at line 45 of file signal.h.

◆ sig_atomic_t

typedef int sig_atomic_t

Definition at line 17 of file signal.h.

Function Documentation

◆ __pxcptinfoptrs()

void **__cdecl __pxcptinfoptrs ( void )

Definition at line 528 of file except.c.

{
    return (void**)&msvcrt_get_thread_data()->xcptinfo;
}

◆ raise()

int __cdecl raise ( int _SigNum )

Definition at line 682 of file except.c.

{
    __sighandler_t handler;
 
    TRACE("(%d)\n", sig);
 
    switch (sig)
    {
    case SIGFPE:
    case SIGILL:
    case SIGSEGV:
        handler = sighandlers[sig];
        if (handler == SIG_DFL) _exit(3);
        if (handler != SIG_IGN)
        {
            EXCEPTION_POINTERS **ep = (EXCEPTION_POINTERS**)__pxcptinfoptrs(), *old_ep;
 
            sighandlers[sig] = SIG_DFL;
 
            old_ep = *ep;
            *ep = NULL;
            if (sig == SIGFPE)
                ((float_handler)handler)(sig, _FPE_EXPLICITGEN);
            else
                handler(sig);
            *ep = old_ep;
        }
        break;
    case SIGABRT:
    case SIGINT:
    case SIGTERM:
    case SIGBREAK:
        handler = sighandlers[sig];
        if (handler == SIG_DFL) _exit(3);
        if (handler != SIG_IGN)
        {
            sighandlers[sig] = SIG_DFL;
            handler(sig);
        }
        break;
    default:
        return -1;
    }
    return 0;
}

Referenced by _CrtHandleDbgReport(), _wassert(), abort(), common_assert_to_message_box(), common_message_window(), getline(), test___pxcptinfoptrs(), and test_signal().

◆ signal()

__p_sig_fn_t __cdecl signal	(	int	_SigNum,
		__p_sig_fn_t	_Func
	)

Definition at line 23 of file signal.c.

{
   __p_sig_fn_t temp;
   unsigned int i;
 
   switch (sig)
   {
      case SIGINT:
      case SIGILL:
      case SIGFPE:
      case SIGSEGV:
      case SIGTERM:
      case SIGBREAK:
      case SIGABRT:
         break;
 
      default:
         _set_errno(EINVAL);
         return SIG_ERR;
   }
 
   // check with IsBadCodePtr
   if ( (uintptr_t)func < 4096 && func != SIG_DFL && func != SIG_IGN)
   {
      _set_errno(EINVAL);
      return SIG_ERR;
   }
 
   for(i=0; i < sizeof(signal_list)/sizeof(signal_list[0]); i++)
   {
      if ( signal_list[i].signal == sig )
      {
         temp = signal_list[i].handler;
         signal_list[i].handler = func;
         return temp;
      }
   }
 
   /* should be impossible to get here */
   _set_errno(EINVAL);
   return SIG_ERR;
}

Macros

Typedefs

Functions