Name
pthread_sigqueue - queue a signal and data to a threadLibrary
POSIX threads library ( libpthread ", " -lpthread )Synopsis
#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)):
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.
Attributes
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
T} | 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)