Standard library header <signal.h>

 

C

Compiler support

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

Standard Library headers

<assert.h> <complex.h> (C99) <ctype.h> <errno.h> <fenv.h> (C99) <float.h> <inttypes.h> (C99)     <iso646.h> (C95) <limits.h> <locale.h> <math.h>

<setjmp.h> <signal.h> <stdalign.h> (C11*) <stdarg.h> <stdatomic.h> (C11)     <stdbit.h> (C23) <stdbool.h> (C99*) <stdckdint.h> (C23) <stddef.h> <stdint.h> (C99) <stdio.h>

<stdlib.h> <stdmchar.h> (C29) <stdnoreturn.h> (C11*) <string.h> <tgmath.h> (C99) <threads.h> (C11) <time.h> <uchar.h> (C11) <wchar.h> (C95) <wctype.h> (C95)

 

This header is part of the program support library.

Types
sig_atomic_t	the integer type that can be accessed as an atomic entity from an asynchronous signal handler (typedef)
Macros
SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM	defines signal types (macro constant)
SIG_DFLSIG_IGN	defines signal handling strategies (macro constant)
SIG_ERR	error was encountered (macro constant)
Functions
signal	sets a signal handler for particular signal (function)
raise	runs the signal handler for particular signal (function)

Synopsis

typedef sig_atomic_t /* see description */;

void (*signal(int sig, void (*func)(int)))(int);
int raise(int sig);

#define SIG_DFL  /* see description */
#define SIG_ERR  /* see description */
#define SIG_IGN  /* see description */
#define SIGABRT  /* see description */
#define SIGFPE   /* see description */
#define SIGILL   /* see description */
#define SIGINT   /* see description */
#define SIGSEGV  /* see description */
#define SIGTERM  /* see description */