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sys_rt_sigtimedwait(9) [centos man page]

SYS_RT_SIGTIMEDWAIT(9)						   Driver Basics					    SYS_RT_SIGTIMEDWAIT(9)

NAME
sys_rt_sigtimedwait - synchronously wait for queued signals specified in uthese SYNOPSIS
long sys_rt_sigtimedwait(const sigset_t __user * uthese, siginfo_t __user * uinfo, const struct timespec __user * uts, size_t sigsetsize); ARGUMENTS
uthese queued signals to wait for uinfo if non-null, the signal's siginfo is returned here uts upper bound on process time suspension sigsetsize size of sigset_t type COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SYS_RT_SIGTIMEDWAIT(9)

Check Out this Related Man Page

SIGWAITINFO(2)						     Linux Programmer's Manual						    SIGWAITINFO(2)

NAME
sigwaitinfo, sigtimedwait - synchronously wait for queued signals SYNOPSIS
#include <signal.h> int sigwaitinfo(const sigset_t *set, siginfo_t *info); int sigtimedwait(const sigset_t *set, siginfo_t *info, const struct timespec timeout); DESCRIPTION
sigwaitinfo() suspends execution of the calling process until one of the signals in set is delivered. (If one of the signals in set is already pending for the calling process, sigwaitinfo() will return immediately with information about that signal.) sigwaitinfo() removes the delivered signal from the calling process's list of pending signals and returns the signal number as its function result. If the info argument is not NULL, then it returns a structure of type siginfo_t (see sigaction(2)) containing information about the signal. Signals returned via sigwaitinfo() are delivered in the usual order; see signal(7) for further details. sigtimedwait() operates in exactly the same way as sigwaitinfo() except that it has an additional argument, timeout, which enables an upper bound to be placed on the time for which the process is suspended. This argument is of the following type: struct timespec { long tv_sec; /* seconds */ long tv_nsec; /* nanoseconds */ } If both fields of this structure are specified as 0, a poll is performed: sigtimedwait() returns immediately, either with information about a signal that was pending for the caller, or with an error if none of the signals in set was pending. RETURN VALUE
On success, both sigwaitinfo() and sigtimedwait() return a signal number (i.e., a value greater than zero). On failure both calls return -1, with errno set to indicate the error. ERRORS
EAGAIN No signal in set was delivered within the timeout period specified to sigtimedwait(). EINVAL timeout was invalid. EINTR The wait was interrupted by a signal handler. (This handler was for a signal other than one of those in set.) NOTES
In normal usage, the caller blocks the signals in set via a prior call to sigprocmask() (so that the default disposition for these signals does not occur if they are delivered between successive calls to sigwaitinfo()or sigtimedwait()) and does not establish handlers for these signals. POSIX leaves the meaning of a NULL value for the timeout argument of sigtimedwait() unspecified, permitting the possibility that this has the same meaning as a call to sigwaitinfo(), and indeed this is what is done on Linux. CONFORMING TO
POSIX 1003.1-2001 SEE ALSO
kill(2), sigaction(2), signal(2), sigpending(2), sigprocmask(2), sigqueue(2), signal(7), sigsetops(3) Linux 2.4.18 2002-06-07 SIGWAITINFO(2)
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