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-'\" t
-.\" Copyright (c) 2010 Michael Kerrisk, <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH pthread_sigqueue 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-pthread_sigqueue \- queue a signal and data to a thread
-.SH LIBRARY
-POSIX threads library
-.RI ( libpthread ", " \-lpthread )
-.SH SYNOPSIS
-.nf
-.B #include <signal.h>
-.B #include <pthread.h>
-.P
-.BI "int pthread_sigqueue(pthread_t " thread ", int " sig ,
-.BI " const union sigval " value );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR pthread_sigqueue ():
-.nf
- _GNU_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR pthread_sigqueue ()
-function performs a similar task to
-.BR sigqueue (3),
-but, rather than sending a signal to a process,
-it sends a signal to a thread in the same process as the
-calling thread.
-.P
-The
-.I thread
-argument is the ID of a thread in the same process as the caller.
-The
-.I sig
-argument specifies the signal to be sent.
-The
-.I value
-argument specifies data to accompany the signal; see
-.BR sigqueue (3)
-for details.
-.SH RETURN VALUE
-On success,
-.BR pthread_sigqueue ()
-returns 0;
-on error, it returns an error number.
-.SH ERRORS
-.TP
-.B EAGAIN
-The limit of signals which may be queued has been reached.
-(See
-.BR signal (7)
-for further information.)
-.TP
-.B EINVAL
-.I sig
-was invalid.
-.TP
-.B ENOSYS
-.BR pthread_sigqueue ()
-is not supported on this system.
-.TP
-.B ESRCH
-.I thread
-is not valid.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR pthread_sigqueue ()
-T} Thread safety MT-Safe
-.TE
-.SH VERSIONS
-The glibc implementation of
-.BR pthread_sigqueue ()
-gives an error
-.RB ( EINVAL )
-on attempts to send either of the real-time signals
-used internally by the NPTL threading implementation.
-See
-.BR nptl (7)
-for details.
-.SH STANDARDS
-GNU.
-.SH HISTORY
-glibc 2.11.
-.SH SEE ALSO
-.BR rt_tgsigqueueinfo (2),
-.BR sigaction (2),
-.BR pthread_sigmask (3),
-.BR sigqueue (3),
-.BR sigwait (3),
-.BR pthreads (7),
-.BR signal (7)