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Man page of PTHREAD_SIGQUEUE
PTHREAD_SIGQUEUE
Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
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NAME
pthread_sigqueue - queue a signal and data to a thread
SYNOPSIS
#include <signal.h>
#include <pthread.h>
int pthread_sigqueue(pthread_t thread, int sig,
const union sigval value);
Compile and link with -pthread.
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
pthread_sigqueue():
_GNU_SOURCE
DESCRIPTION
The
pthread_sigqueue()
function performs a similar task to
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.
The
thread
argument is the ID of a thread in the same process as the caller.
The
sig
argument specifies the signal to be sent.
The
value
argument specifies data to accompany the signal; see
sigqueue(3)
for details.
RETURN VALUE
On success,
pthread_sigqueue()
returns 0;
on error, it returns an error number.
ERRORS
- EAGAIN
-
The limit of signals which may be queued has been reached.
(See
signal(7)
for further information.)
- EINVAL
-
sig
was invalid.
- ENOSYS
-
pthread_sigqueue()
is not supported on this system.
- ESRCH
-
thread
is not valid.
VERSIONS
The
pthread_sigqueue()
function first appeared in glibc 2.11.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
pthread_sigqueue()
| Thread safety | MT-Safe
|
CONFORMING TO
This function is a GNU extension.
NOTES
The glibc implementation of
pthread_sigqueue()
gives an error
(EINVAL)
on attempts to send either of the real-time signals
used internally by the NPTL threading implementation.
See
nptl(7)
for details.
SEE ALSO
rt_tgsigqueueinfo(2),
sigaction(2),
pthread_sigmask(3),
sigqueue(3),
sigwait(3),
pthreads(7),
signal(7)
COLOPHON
This page is part of release 4.09 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- ATTRIBUTES
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
- COLOPHON
-
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