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pthread_sigqueue(3) [freebsd man page]

PTHREAD_SIGQUEUE(3)					     Linux Programmer's Manual					       PTHREAD_SIGQUEUE(3)

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 4.15 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 Linux 2017-09-15 PTHREAD_SIGQUEUE(3)

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