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 single-threaded program it is equivalent tokill(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 |
| T} | 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).