Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #1002
Difficulty: Medium
During her lifetime, Grace Hopper was awarded over 100 honorary degrees from universities across the world for her work in computer science.
True or False?
Linux & Unix Commands - Search Man Pages

sigpause(2) [ultrix man page]

sigpause(2)							System Calls Manual						       sigpause(2)

Name
       sigpause - atomically release blocked signals and wait for interrupt

Syntax
       sigpause(sigmask)
       int sigmask;

Description
       The  system  call assigns sigmask to the set of masked signals and then waits for a signal to arrive.  On return, the set of masked signals
       is restored.  The sigmask is usually 0 to indicate that no signals are now to be blocked.  The  always  terminates  by  being  interrupted,
       returning EINTR.

       In  normal  usage,  a  signal is blocked using at the beginning of a critical section of code.  Variables modified on the occurrence of the
       signal are examined to determine if there is any work to be done. The process pauses, awaiting work, by using with the mask returned by

See Also
       sigblock(2), sigvec(2)

																       sigpause(2)

Check Out this Related Man Page

sigblock(3UCB)					     SunOS/BSD Compatibility Library Functions					    sigblock(3UCB)

NAME
sigblock, sigmask, sigpause, sigsetmask - block signals SYNOPSIS
/usr/ucb/cc [ flag ... ] file ... #include <signal.h> int sigblock(mask); intmask; int sigmask( signum); int signum; int sigpause(int mask); int mask; int sigsetmask( mask); int mask; DESCRIPTION
sigblock, sigmask, sigpause, sigsetmask - block signals sigblock() adds the signals specified in mask to the set of signals currently being blocked from delivery. Signals are blocked if the appropriate bit in mask is a 1; the macro sigmask is provided to construct the mask for a given signum. sigblock() returns the previous mask. The previous mask may be restored using sigsetmask(). sigpause() assigns mask to the set of masked signals and then waits for a signal to arrive; on return the set of masked signals is restored. mask is usually 0 to indicate that no signals are now to be blocked. sigpause() always terminates by being interrupted, returning -1 and setting errno to EINTR. sigsetmask() sets the current signal mask (those signals that are blocked from delivery). Signals are blocked if the corresponding bit in mask is a 1; the macro sigmask is provided to construct the mask for a given signum. In normal usage, a signal is blocked using sigblock(). To begin a critical section, variables modified on the occurrence of the signal are examined to determine that there is no work to be done, and the process pauses awaiting work by using sigpause() with the mask returned by sigblock(). It is not possible to block SIGKILL, SIGSTOP, or SIGCONT, this restriction is silently imposed by the system. RETURN VALUES
sigblock() and sigsetmask() return the previous set of masked signals. sigpause() returns -1 and sets errno to EINTR. SEE ALSO
kill(2), sigaction(2), signal(3UCB), sigvec(3UCB) NOTES
Use of these interfaces should be restricted to only applications written on BSD platforms. Use of these interfaces with any of the system libraries or in multi-thread applications is unsupported. SunOS 5.10 19 Feb 1993 sigblock(3UCB)

Featured Tech Videos