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30 .\" $FreeBSD: src/lib/libc_r/man/pthread_kill.3,v 1.8 2001/10/01 16:09:09 ru Exp $
31 .Dd Feb 05, 2002
32 .Dt PTHREAD_KILL 2
33 .Os
34 .Sh NAME
35 .Nm pthread_kill
36 .Nd send a signal to a specified thread
37 .Sh SYNOPSIS
38 .In pthread.h
39 .In signal.h
40 .Ft int
41 .Fn pthread_kill "pthread_t thread" "int sig"
42 .Sh DESCRIPTION
43 The
44 .Fn pthread_kill
45 function sends a signal, specified by
46 .Fa sig ,
47 to a thread, specified by
48 .Fa thread .
49 If
50 .Fa sig
51 is 0, error checking is performed, but no signal is actually sent.
52 .Sh RETURN VALUES
53 If successful,
54 .Fn pthread_kill
55 returns 0.
56 Otherwise, an error number is returned.
57 .Sh ERRORS
58 .Fn pthread_kill
59 will fail if:
60 .Bl -tag -width Er
61 .It Bq Er ESRCH
62 .Fa thread
63 is an invalid thread ID.
64 .It Bq Er EINVAL
65 .Fa sig
66 is an invalid or unsupported signal number.
67 .El
68 .Sh SEE ALSO
69 .Xr kill 2 ,
70 .Xr pthread_self 3 ,
71 .Xr raise 3
72 .Sh STANDARDS
73 .Fn pthread_kill
74 conforms to ISO/IEC 9945-1:1996 (``POSIX.1'')