pthread_sigmask(2) BSD System Calls Manual pthread_sigmask(2)
NAME
pthread_sigmask -- examine and/or change a thread's signal mask
SYNOPSIS
#include <signal.h>
int
pthread_sigmask(int how, const sigset_t *restrict set,
sigset_t *restrict 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
pthread_sigmask() will fail if:
[EINVAL] how is not one of the defined values.
LEGACY SYNOPSIS
#include <pthread.h>
#include <signal.h>
The include file <pthread.h> is necessary.
SEE ALSO
sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2), sigsetops(3),
compat(5)
STANDARDS
pthread_sigmask() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'')
BSD April 27, 2000 BSD
Mac OS X 10.8 - Generated Sat Aug 25 06:43:48 CDT 2012