man/man2/_lwp_kill.2

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 _lwp_kill 2 "8 Aug 2001" "SunOS 5.11" "System Calls"
 NAME
_lwp_kill - send a signal to a LWP
 SYNOPSIS

#include <sys/lwp.h>
#include <signal.h>

int _lwp_kill(lwpid_t target_lwp, int sig);


 DESCRIPTION

The _lwp_kill() function sends a signal to the LWP specified by
target_lwp. The signal that is to be sent is specified by sig and
must be one from the list given in signal.h(3HEAD). If sig is 0
(the null signal), error checking is performed but no signal is actually sent.
This can be used to check the validity of target_lwp.

The target_lwp must be an LWP within the same process as the calling LWP.
 RETURN VALUES

Upon successful completion, 0 is returned. A non-zero value indicates an
error.
 ERRORS

If any of the following conditions occur, _lwp_kill() fails and returns
the corresponding value:

EINVAL

The sig argument is not a valid signal number.


ESRCH

The target_lwp argument cannot be found in the current process.


 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:


ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelAsync-Signal-Safe


 SEE ALSO

kill(2), sigaction(2), sigprocmask(2), signal.h(3HEAD),
attributes(5)