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PTHREAD_SIGQUEUE(3) - man page online | library functions

Queue a signal and data to a thread.

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2015-03-02
PTHREAD_SIGQUEUE(3)                 Linux Programmer's Manual                 PTHREAD_SIGQUEUE(3)

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 fur‐ ther 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 4.04 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 http://www.kernel.org/doc/man-pages/.
Linux 2015-03-02 PTHREAD_SIGQUEUE(3)
This manual Reference Other manuals
pthread_sigqueue(3) referred by nptl(7) | pthreads(7) | rt_sigqueueinfo(2) | signal(7) | sigqueue(3)
refer to attributes(7) | feature_test_macros(7) | nptl(7) | pthread_sigmask(3) | pthreads(7) | rt_sigqueueinfo(2) | sigaction(2) | signal(7) | sigqueue(3) | sigwait(3)