4.4BSD/usr/share/man/cat2/sigpause.0

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SIGPAUSE(2)                 BSD Programmer's Manual                SIGPAUSE(2)

NNAAMMEE
     ssiiggppaauussee - atomically release blocked signals and wait for interrupt

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ssiiggnnaall..hh>>

     _i_n_t
     ssiiggppaauussee(_i_n_t _s_i_g_m_a_s_k);

DDEESSCCRRIIPPTTIIOONN
     TThhiiss iinntteerrffaaccee iiss mmaaddee oobbssoolleettee bbyy sigsuspend(2).

     SSiiggppaauussee() assigns _s_i_g_m_a_s_k to the set of masked signals and then waits
     for a signal to arrive; on return the set of masked signals is restored.
     _S_i_g_m_a_s_k is usually 0 to indicate that no signals are to be blocked.
     SSiiggppaauussee() always terminates by being interrupted, returning -1 with
     _e_r_r_n_o set to EINTR

SSEEEE AALLSSOO
     sigsuspend(2),  kill(2),  sigaction(2),  sigprocmask(2),  sigblock(2),
     sigvec(2)

HHIISSTTOORRYY
     The ssiiggppaauussee function call appeared in 4.2BSD and has been deprecated.

4th Berkeley Distribution        June 2, 1993                                1