2 * Copyright (C) 2001 Julian Elischer <julian@freebsd.org>
3 * for the FreeBSD Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice(s), this list of conditions and the following disclaimer as
12 * the first lines of this file unmodified other than the possible
13 * addition of one or more copyright notices.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice(s), this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
36 #include <machine/kse.h>
37 #include <sys/ucontext.h>
40 * This file defines the structures needed for communication between
41 * the userland and the kernel when running a KSE-based threading system.
42 * The only programs that should see this file are the UTS and the kernel.
46 typedef void kse_func_t(struct kse_mailbox *);
51 * This describes a user thread to the kernel scheduler.
53 struct kse_thr_mailbox {
54 ucontext_t tm_context; /* User and machine context */
55 unsigned int tm_flags; /* Thread flags */
56 struct kse_thr_mailbox *tm_next; /* Next thread in list */
57 void *tm_udata; /* For use by the UTS */
64 * Cummunication path between the UTS and the kernel scheduler specific to
68 struct kse_thr_mailbox *km_curthread; /* Currently running thread */
69 struct kse_thr_mailbox *km_completed; /* Threads back from kernel */
70 sigset_t km_sigscaught; /* Caught signals */
71 unsigned int km_flags; /* KSE flags */
72 kse_func_t *km_func; /* UTS function */
73 stack_t km_stack; /* UTS context */
74 void *km_udata; /* For use by the UTS */
79 int kse_create(struct kse_mailbox *, int);
81 int kse_release(void);
82 int kse_thr_interrupt(struct kse_thr_mailbox *);
86 #endif /* !_SYS_KSE_H_ */