NAME
pthread_sigqueue - queue a signal and data to a thread
LIBRARY
POSIX threads library (libpthread, -lpthread)
SYNOPSIS
#include <signal.h>\n
\n#include <pthread.h>int pthread_sigqueue(pthread_t \nthread\n, int \nsig\n,\n
\n const union sigval \nvalue\n);pthread_sigqueue():
\n
_GNU_SOURCEDESCRIPTION
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.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| pthread_sigqueue () | Thread safety | MT-Safe |
VERSIONS
The glibc implementation of pthread_sigqueue() gives an error (EINVAL) on attempts to send either of the real-time signals used internally by the NPTL threading implementation. See nptl(7) for details.
STANDARDS
GNU.
HISTORY
glibc 2.11.
SEE ALSO
rt_tgsigqueueinfo(2), sigaction(2), pthread_sigmask(3), sigqueue(3), sigwait(3), pthreads(7), signal(7)