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

       pthread_sigqueue - queue a signal and data to a thread

       #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

       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

       On success, pthread_sigqueue() returns 0; on error, it returns an error

       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.

       The pthread_sigqueue() function first appeared in glibc 2.11.

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

       This function is a GNU extension.

       rt_tgsigqueueinfo(2),  sigaction(2),  pthread_sigmask(3),  sigqueue(3),
       sigwait(3), pthreads(7), signal(7)

       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

Linux                             2014-05-28               PTHREAD_SIGQUEUE(3)

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