pthread_sigqueue (3)

#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 details.

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

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)

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