4.3BSD-UWisc/man/cat2/sigpause.2

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



NAME
     sigpause - atomically release blocked signals and wait for
     interrupt

SYNOPSIS
     sigpause(sigmask)
     int sigmask;

DESCRIPTION
     _S_i_g_p_a_u_s_e 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 indi-
     cate that no signals are now to be blocked.  _S_i_g_p_a_u_s_e always
     terminates by being interrupted, returning -1 with _e_r_r_n_o set
     to EINTR.

     In normal usage, a signal is blocked using _s_i_g_b_l_o_c_k(2), 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 _s_i_g_p_a_u_s_e with the mask returned by _s_i_g_b_l_o_c_k.

SEE ALSO
     sigblock(2), sigvec(2)































Printed 12/27/86          May 15, 1986                          1