260ba0bff1
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2001 Julian Elischer <julian@freebsd.org>
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* for the FreeBSD Foundation.
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice(s), this list of conditions and the following disclaimer as
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* the first lines of this file unmodified other than the possible
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* addition of one or more copyright notices.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice(s), this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_KSE_H_
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#define _SYS_KSE_H_
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#include <sys/ucontext.h>
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#include <sys/time.h>
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#include <sys/signal.h>
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/*
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* This file defines the structures needed for communication between
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* the userland and the kernel when running a KSE-based threading system.
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* The only programs that should see this file are the user thread
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* scheduler (UTS) and the kernel.
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*/
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struct kse_mailbox;
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typedef void kse_func_t(struct kse_mailbox *);
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/*
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* Thread mailbox.
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*
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* This describes a user thread to the kernel scheduler.
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*/
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struct kse_thr_mailbox {
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ucontext_t tm_context; /* User and machine context */
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uint32_t tm_flags; /* Thread flags */
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struct kse_thr_mailbox *tm_next; /* Next thread in list */
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void *tm_udata; /* For use by the UTS */
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uint32_t tm_uticks; /* Time in userland */
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uint32_t tm_sticks; /* Time in kernel */
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siginfo_t tm_syncsig;
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uint32_t tm_dflags; /* Debug flags */
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lwpid_t tm_lwp; /* kernel thread UTS runs on */
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uint32_t __spare__[6];
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};
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/*
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* KSE mailbox.
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*
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* Communication path between the UTS and the kernel scheduler specific to
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* a single KSE.
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*/
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struct kse_mailbox {
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uint32_t km_version; /* Mailbox version */
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struct kse_thr_mailbox *km_curthread; /* Currently running thread */
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struct kse_thr_mailbox *km_completed; /* Threads back from kernel */
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sigset_t km_sigscaught; /* Caught signals */
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uint32_t km_flags; /* Mailbox flags */
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kse_func_t *km_func; /* UTS function */
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stack_t km_stack; /* UTS stack */
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void *km_udata; /* For use by the UTS */
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struct timespec km_timeofday; /* Time of day */
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uint32_t km_quantum; /* Upcall quantum in msecs */
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lwpid_t km_lwp; /* kernel thread UTS runs on */
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uint32_t __spare2__[7];
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};
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#define KSE_VER_0 0
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#define KSE_VERSION KSE_VER_0
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/* These flags are kept in km_flags */
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#define KMF_NOUPCALL 0x01
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#define KMF_NOCOMPLETED 0x02
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#define KMF_DONE 0x04
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#define KMF_BOUND 0x08
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#define KMF_WAITSIGEVENT 0x10
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/* These flags are kept in tm_flags */
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#define TMF_NOUPCALL 0x01
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/* These flags are kept in tm_dlfags */
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#define TMDF_SSTEP 0x01
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#define TMDF_SUSPEND 0x02
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/* Flags for kse_switchin */
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#define KSE_SWITCHIN_SETTMBX 0x01
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/* Commands for kse_thr_interrupt */
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#define KSE_INTR_INTERRUPT 1
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#define KSE_INTR_RESTART 2
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#define KSE_INTR_SENDSIG 3
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#define KSE_INTR_SIGEXIT 4
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#define KSE_INTR_DBSUSPEND 5
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#define KSE_INTR_EXECVE 6
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struct kse_execve_args {
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sigset_t sigmask;
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sigset_t sigpend;
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char *path;
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char **argv;
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char **envp;
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void *reserved;
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};
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#ifndef _KERNEL
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int kse_create(struct kse_mailbox *, int);
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int kse_exit(void);
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int kse_release(struct timespec *);
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int kse_thr_interrupt(struct kse_thr_mailbox *, int, long);
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int kse_wakeup(struct kse_mailbox *);
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int kse_switchin(struct kse_thr_mailbox *, int flags);
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#endif /* !_KERNEL */
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#endif /* !_SYS_KSE_H_ */
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