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PTHREAD_SIGMASK (3) | C library functions | Unix Manual Pages | :man

NAME

pthread_sigmask - examine and/or change a thread’s signal mask

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards

LIBRARY


.Lb libc_r
.Lb libpthread
.Lb libthr

SYNOPSIS


.In pthread.h
.In signal.h int pthread_sigmask "int how" "const sigset_t *set" "sigset_t *oset"

DESCRIPTION

The pthread_sigmask function examines and/or changes the calling thread’s signal mask.

If set is not NULL, it specifies a set of signals to be modified, and how specifies what to set the signal mask to:

SIG_BLOCK Union of the current mask and set.
SIG_UNBLOCK
Intersection of the current mask and the complement of set.
SIG_SETMASK
set.

If oset is not NULL, the previous signal mask is stored in the location pointed to by oset.

SIGKILL and SIGSTOP cannot be blocked, and will be silently ignored if included in the signal mask.

RETURN VALUES

If successful, pthread_sigmask returns 0. Otherwise, an error is returned.

ERRORS

The pthread_sigmask function will fail if:
[EINVAL]
how is not one of the defined values.

SEE ALSO

sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2), sigsetops(3)

STANDARDS


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