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raise(3) Library Functions Manual raise(3)

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).

Interface Attribute Value
raise () Thread safety MT-Safe

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)

2023-03-30 Linux man-pages 6.04