38 lines
861 B
C
Executable File
38 lines
861 B
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* Copyright (c) 1994 Sun Microsystems, Inc. */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)pause.c 1.2 94/10/13 SMI" /* from SVr4.0 1.78 */
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/sysmacros.h>
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#include <sys/systm.h>
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#include <sys/user.h>
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <sys/condvar.h>
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#include <sys/debug.h>
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/*
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* Indefinite wait. No one should call wakeup() or t_release_all_chan()
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* with a chan of &u.
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*/
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int
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pause()
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{
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proc_t *p = ttoproc(curthread);
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mutex_enter(&p->p_lock);
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while (cv_wait_sig_swap(&u.u_cv, &p->p_lock))
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;
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mutex_exit(&p->p_lock);
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return (set_errno(EINTR));
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}
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