std::raise

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Compiler support
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Standard library
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Feature test macros(C++20)
Language support library
Concepts library(C++20)
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General utilities library
Containers library
Iterators library
Ranges library(C++20)
Algorithms library
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Numerics library
Date and time library
Input/output library
Filesystem library(C++17)
Concurrency support library(C++11)
Execution control library(C++26)
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Symbols index
External libraries

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Utilities library

Language support

Type support (basic types, RTTI)

Library feature-test macros(C++20)

Program utilities

Variadic functions

initializer_list

(C++11)

is_constant_evaluated

(C++20)

is_within_lifetime

(C++26)

source_location

(C++20)

Coroutine support(C++20)

Contract support(C++26)

Three-way comparison

three_way_comparablethree_way_comparable_with

(C++20)(C++20)

strong_ordering

(C++20)

weak_ordering

(C++20)

partial_ordering

(C++20)

common_comparison_category

(C++20)

compare_three_way_result

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

compare_strong_order_fallback

(C++20)

compare_weak_order_fallback

(C++20)

compare_partial_order_fallback

(C++20)

is_eqis_ltis_lteq

(C++20)(C++20)(C++20)

is_neqis_gtis_gteq

(C++20)(C++20)(C++20)

General utilities

Function objects
Bit manipulation(C++20)
C-style bit manipulation(C++26)
bitset
hash (C++11)

Relational operators(deprecated in C++20)

rel_ops::operator!=rel_ops::operator>

rel_ops::operator<=rel_ops::operator>=

Integer comparison functions

cmp_equalcmp_lesscmp_less_than

(C++20)(C++20)(C++20)

cmp_not_equalcmp_greatercmp_greater_than

(C++20)(C++20)(C++20)

in_range

(C++20)

Swap andtype operations

swap
ranges::swap (C++20)
exchange (C++14)
declval (C++11)
to_underlying (C++23)

forward (C++11)
forward_like (C++23)
move (C++11)
move_if_noexcept (C++11)
as_const (C++17)

Common vocabulary types

pair
tuple (C++11)
optional (C++17)
any (C++17)
variant (C++17)

tuple_size (C++11)
tuple_element (C++11)
apply (C++17)
make_from_tuple (C++17)
expected (C++23)

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Program support utilities

Program termination

abort
exit
quick_exit (C++11)
_Exit (C++11)

atexit
at_quick_exit (C++11)
EXIT_SUCCESSEXIT_FAILURE

Unreachable control flow

unreachable

(C++23)

Communicating with the environment

system

getenv

Signals

signal
raise
sig_atomic_t

SIG_DFLSIG_IGN
SIG_ERR

Defined in header`<csignal>`
int raise(int sig);

Sends signal sig to the program. The signal handler (specified using thestd::signal() function) is invoked.

If the user-defined signal handling strategy is not set usingstd::signal() yet, it is implementation-defined whether the signal will be ignored or default handler will be invoked.

[edit]Parameters

sig

the signal to be sent. It can be an implementation-defined value or one of the following values:

SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM

defines signal types
(macro constant)[edit]

[edit]Return value

0 upon success, non-zero value on failure.

[edit]Example

Run this code

#include <csignal>#include <iostream> void signal_handler(int signal){std::cout<<"Received signal "<< signal<<'\n';} int main(){// Install a signal handlerstd::signal(SIGTERM, signal_handler); std::cout<<"Sending signal "<<SIGTERM<<'\n';    std::raise(SIGTERM);}