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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 further 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

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