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
   Multithreading (see pthreads(7))
       The pthread_sigqueue() function is thread-safe.

CONFORMING TO
       This function is a GNU extension.

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 3.74 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                                       2014-05-28                        PTHREAD_SIGQUEUE(3)