d8596f6f68
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified 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.
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>
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* Copyright (c) 1994 by Chris Provenzano, proven@mit.edu
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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, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Chris Provenzano.
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* 4. The name of Chris Provenzano may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO 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
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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* Description : Basic timers header.
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*/
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#ifndef _SYS_TIMERS_H_
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#define _SYS_TIMERS_H_
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#include <sys/time.h>
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#ifdef _KERNEL
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/*
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* Structures used to manage POSIX timers in a process.
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*/
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struct itimer {
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struct mtx it_mtx;
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struct sigevent it_sigev;
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struct itimerspec it_time;
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struct proc *it_proc;
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int it_flags;
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int it_usecount;
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int it_overrun; /* Overruns currently accumulating */
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int it_overrun_last; /* Overruns associated w/ a delivery */
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int it_clockid;
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int it_timerid;
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ksiginfo_t it_ksi;
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union {
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/* realtime */
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struct {
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struct callout it_callout;
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} _rt;
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/* cpu timer */
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struct {
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LIST_ENTRY(itimer) it_link;
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TAILQ_ENTRY(itimer) it_worklink;
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int it_active;
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int it_cflags;
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} _cpu;
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} _data;
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};
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#define it_callout _data._rt.it_callout
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#define it_link _data._cpu.it_link
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#define it_active _data._cpu.it_active
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#define it_worklink _data._cpu.it_worklink
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#define it_cflags _data._cpu.it_cflags
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#define ITF_DELETING 0x01
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#define ITF_WANTED 0x02
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#define ITCF_ONWORKLIST 0x01
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#define TIMER_MAX 32
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#define ITIMER_LOCK(it) mtx_lock(&(it)->it_mtx)
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#define ITIMER_UNLOCK(it) mtx_unlock(&(it)->it_mtx)
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LIST_HEAD(itimerlist, itimer);
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struct itimers {
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struct itimerlist its_virtual;
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struct itimerlist its_prof;
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TAILQ_HEAD(, itimer) its_worklist;
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struct itimer *its_timers[TIMER_MAX];
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};
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struct kclock {
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int (*timer_create)(struct itimer *timer);
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int (*timer_settime)(struct itimer * timer, int flags,
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struct itimerspec * new_value,
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struct itimerspec * old_value);
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int (*timer_delete)(struct itimer * timer);
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int (*timer_gettime)(struct itimer * timer,
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struct itimerspec * cur_value);
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void (*event_hook)(struct proc *p, clockid_t clock_id, int event);
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};
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/* Event values for event_hook() */
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#define ITIMER_EV_EXEC 0
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#define ITIMER_EV_EXIT 1
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int itimer_accept(struct proc *p, int tid, ksiginfo_t *ksi);
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#endif
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#endif /* !_SYS_TIMERS_H_ */
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