signal.h File Reference

#include <corecrt.h>

Include dependency graph for signal.h:

Go to the source code of this file.

Macros
#define	SIGINT   2
#define	SIGILL   4
#define	SIGFPE   8
#define	SIGSEGV   11
#define	SIGTERM   15
#define	SIGBREAK   21
#define	SIGABRT   22
#define	NSIG   (SIGABRT + 1)
#define	SIG_DFL   ((__sighandler_t)0)
#define	SIG_IGN   ((__sighandler_t)1)
#define	SIG_ERR   ((__sighandler_t)-1)

Typedefs
typedef void(__cdecl *	__sighandler_t) (int)

Functions
_ACRTIMP void **__cdecl	__pxcptinfoptrs (void)
_ACRTIMP __sighandler_t __cdecl	signal (int sig, __sighandler_t func)
_ACRTIMP int __cdecl	raise (int sig)

Macro Definition Documentation

NSIG

#define NSIG   (SIGABRT + 1)

Definition at line 33 of file signal.h.

SIG_DFL

#define SIG_DFL   ((__sighandler_t)0)

Definition at line 41 of file signal.h.

SIG_ERR

#define SIG_ERR   ((__sighandler_t)-1)

Definition at line 43 of file signal.h.

SIG_IGN

#define SIG_IGN   ((__sighandler_t)1)

Definition at line 42 of file signal.h.

SIGABRT

#define SIGABRT   22

Definition at line 31 of file signal.h.

SIGBREAK

#define SIGBREAK   21

Definition at line 30 of file signal.h.

SIGFPE

#define SIGFPE   8

Definition at line 27 of file signal.h.

SIGILL

#define SIGILL   4

Definition at line 26 of file signal.h.

SIGINT

#define SIGINT   2

Definition at line 25 of file signal.h.

SIGSEGV

#define SIGSEGV   11

Definition at line 28 of file signal.h.

SIGTERM

#define SIGTERM   15

Definition at line 29 of file signal.h.

Typedef Documentation

__sighandler_t

typedef void(__cdecl * __sighandler_t) (int)

Definition at line 39 of file signal.h.

Function Documentation

__pxcptinfoptrs()

_ACRTIMP void **__cdecl __pxcptinfoptrs

(

void

)

Definition at line 528 of file except.c.

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

raise()

_ACRTIMP int __cdecl raise

(

int

sig

)

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;
}

signal()

_ACRTIMP __sighandler_t __cdecl signal	(	int	sig,
		__sighandler_t	func
	)

Definition at line 650 of file except.c.

{
    __sighandler_t ret = SIG_ERR;
 
    TRACE("(%d, %p)\n", sig, func);
 
    if (func == SIG_ERR) return SIG_ERR;
 
    switch (sig)
    {
    /* Cases handled internally.  Note SIGTERM is never generated by Windows,
     * so we effectively mask it.
     */
    case SIGABRT:
    case SIGFPE:
    case SIGILL:
    case SIGSEGV:
    case SIGINT:
    case SIGTERM:
    case SIGBREAK:
        ret = sighandlers[sig];
        sighandlers[sig] = func;
        break;
    default:
        ret = SIG_ERR;
    }
    return ret;
}