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);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    _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 details.

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

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