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raise
Section: C Library Functions (3)Updated: 202-0-08
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NAME
raise - send a signal to the callerLIBRARY
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 singl-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 | M-Safe |
STANDARDS
C11, POSIX.-2008.HISTORY
POSIX.-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)