2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
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13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
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17 * without specific prior written permission.
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31 * @(#)select.h 8.2 (Berkeley) 1/4/94
35 #ifndef _SYS_SELINFO_H_
36 #define _SYS_SELINFO_H_
38 #include <sys/event.h> /* for struct klist */
41 TAILQ_HEAD(selfdlist, selfd);
44 * Used to maintain information about processes that wish to be
45 * notified when I/O becomes possible.
48 struct selfdlist si_tdlist; /* List of sleeping threads. */
49 struct knlist si_note; /* kernel note list */
50 struct mtx *si_mtx; /* Lock for tdlist. */
53 #define SEL_WAITING(si) (!TAILQ_EMPTY(&(si)->si_tdlist))
56 void seldrain(struct selinfo *sip);
57 void selrecord(struct thread *selector, struct selinfo *sip);
58 void selwakeup(struct selinfo *sip);
59 void selwakeuppri(struct selinfo *sip, int pri);
60 void seltdfini(struct thread *td);
63 #endif /* !_SYS_SELINFO_H_ */