raise - send a signal to the caller

NAME  LIBRARY  SYNOPSIS  DESCRIPTION  RETURN VALUE  ATTRIBUTES  STANDARDS  HISTORY  SEE ALSO 

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NAME

raise − send a signal to the caller

LIBRARY

Standard C library (libc, −lc)

SYNOPSIS

#include <signal.h>

int raise(int sig);

DESCRIPTION

The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to

kill(getpid(), sig);

In a multithreaded program it is equivalent to

pthread_kill(pthread_self(), sig);

If the signal causes a handler to be called, raise() will return only after the signal handler has returned.

RETURN VALUE

raise() returns 0 on success, and nonzero for failure.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

STANDARDS

C11, POSIX.1-2008.

HISTORY

POSIX.1-2001, C89.

Since glibc 2.3.3, raise() is implemented by calling tgkill(2), if the kernel supports that system call. Older glibc versions implemented raise() using kill(2).

SEE ALSO

getpid(2), kill(2), sigaction(2), signal(2), pthread_kill(3), signal(7)

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