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raise(3)
NAME
  raise - Sends a signal to the executing process or thread

LIBRARY
  Standard C Library (libc.so, libc.a)

SYNOPSIS
  #include <signal.h>

  int raise(
	  int signal );

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  raise():  POSIX.1c, XPG4, XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  signal    Specifies a signal number.

DESCRIPTION
  The raise() function sends the signal specified by the signal parameter to
  the invoking thread. In single-threaded programs this is equivalent to:

       kill(getpid(), signal);

  [POSIX]  When the pthread library is present, the behavior is equivalent
  to:

       pthread_kill(pthread_self(), signal);

RETURN VALUES
  Upon successful completion of the raise() function, a value of 0 (zero) is
  returned. Otherwise, a nonzero value is returned and errno is set to
  indicate the error.

ERRORS
  The raise() function sets errno to the specified values for the following
  conditions:

  [EINVAL]  The value of the signal parameter is an invalid or unsupported
	    signal number.

RELATED INFORMATION
  Functions: kill(2), sigaction(2)

  Standards: standards(5)