2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/* $NetBSD: sched.c,v 1.2 2008/10/31 00:29:19 rmind Exp $ */
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/*
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* Copyright (c) 2008, Mindaugas Rasiukevicius <rmind at NetBSD org>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER 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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#include <sys/cdefs.h>
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__RCSID("$NetBSD: sched.c,v 1.2 2008/10/31 00:29:19 rmind Exp $");
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sched.h>
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#include <sys/param.h>
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#include <sys/types.h>
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/* All LWPs in the process */
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#define P_ALL_LWPS 0
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/*
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* Scheduling parameters.
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*/
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int
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sched_setparam(pid_t pid, const struct sched_param *param)
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{
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struct sched_param sp;
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memset(&sp, 0, sizeof(struct sched_param));
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sp.sched_priority = param->sched_priority;
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return _sched_setparam(pid, P_ALL_LWPS, SCHED_NONE, &sp);
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}
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int
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sched_getparam(pid_t pid, struct sched_param *param)
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{
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return _sched_getparam(pid, P_ALL_LWPS, NULL, param);
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}
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int
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sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)
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{
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struct sched_param sp;
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int ret, old_policy;
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ret = _sched_getparam(pid, P_ALL_LWPS, &old_policy, &sp);
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if (ret < 0)
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return ret;
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memset(&sp, 0, sizeof(struct sched_param));
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sp.sched_priority = param->sched_priority;
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ret = _sched_setparam(pid, P_ALL_LWPS, policy, &sp);
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if (ret < 0)
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return ret;
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return old_policy;
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}
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int
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sched_getscheduler(pid_t pid)
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{
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struct sched_param sp;
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int ret, policy;
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ret = _sched_getparam(pid, P_ALL_LWPS, &policy, &sp);
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if (ret < 0)
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return ret;
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return policy;
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}
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/*
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* Scheduling priorities.
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*/
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int
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sched_get_priority_max(int policy)
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{
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if (policy < SCHED_OTHER || policy > SCHED_RR) {
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errno = EINVAL;
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return -1;
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}
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return sysconf(_SC_SCHED_PRI_MAX);
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}
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int
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sched_get_priority_min(int policy)
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{
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if (policy < SCHED_OTHER || policy > SCHED_RR) {
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errno = EINVAL;
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return -1;
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}
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return sysconf(_SC_SCHED_PRI_MIN);
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}
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int
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/*ARGSUSED*/
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sched_rr_get_interval(pid_t pid, struct timespec *interval)
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{
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interval->tv_sec = 0;
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interval->tv_nsec = sysconf(_SC_SCHED_RT_TS) * 1000;
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return 0;
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}
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/*
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* Process affinity.
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*/
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int
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sched_getaffinity_np(pid_t pid, size_t size, cpuset_t *cpuset)
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{
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return _sched_getaffinity(pid, P_ALL_LWPS, size, cpuset);
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}
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int
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sched_setaffinity_np(pid_t pid, size_t size, cpuset_t *cpuset)
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{
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return _sched_setaffinity(pid, P_ALL_LWPS, size, cpuset);
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}
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