165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/*
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>
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* Copyright (C) 2003 Daniel M. Eischen <deischen@freebsd.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 unmodified, this list of conditions, and the following
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* 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/signalvar.h>
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#include <sys/rtprio.h>
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#include <pthread.h>
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#include "thr_private.h"
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/*#define DEBUG_THREAD_KERN */
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#ifdef DEBUG_THREAD_KERN
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#define DBG_MSG stdout_debug
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#else
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#define DBG_MSG(x...)
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#endif
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/*
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* This is called when the first thread (other than the initial
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* thread) is created.
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*/
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int
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_thr_setthreaded(int threaded)
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{
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if (((threaded == 0) ^ (__isthreaded == 0)) == 0)
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return (0);
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__isthreaded = threaded;
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if (threaded != 0) {
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_thr_rtld_init();
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} else {
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_thr_rtld_fini();
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}
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return (0);
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}
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void
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_thr_signal_block(struct pthread *curthread)
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{
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sigset_t set;
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if (curthread->sigblock > 0) {
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curthread->sigblock++;
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return;
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}
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SIGFILLSET(set);
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SIGDELSET(set, SIGBUS);
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SIGDELSET(set, SIGILL);
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SIGDELSET(set, SIGFPE);
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SIGDELSET(set, SIGSEGV);
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SIGDELSET(set, SIGTRAP);
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__sys_sigprocmask(SIG_BLOCK, &set, &curthread->sigmask);
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curthread->sigblock++;
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}
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void
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_thr_signal_unblock(struct pthread *curthread)
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{
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if (--curthread->sigblock == 0)
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__sys_sigprocmask(SIG_SETMASK, &curthread->sigmask, NULL);
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}
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int
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_thr_send_sig(struct pthread *thread, int sig)
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{
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return thr_kill(thread->tid, sig);
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}
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void
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_thr_assert_lock_level()
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{
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PANIC("locklevel <= 0");
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}
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int
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_rtp_to_schedparam(const struct rtprio *rtp, int *policy,
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struct sched_param *param)
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{
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switch(rtp->type) {
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case RTP_PRIO_REALTIME:
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*policy = SCHED_RR;
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param->sched_priority = RTP_PRIO_MAX - rtp->prio;
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break;
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case RTP_PRIO_FIFO:
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*policy = SCHED_FIFO;
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param->sched_priority = RTP_PRIO_MAX - rtp->prio;
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break;
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default:
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*policy = SCHED_OTHER;
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param->sched_priority = 0;
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break;
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}
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return (0);
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}
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int
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_schedparam_to_rtp(int policy, const struct sched_param *param,
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struct rtprio *rtp)
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{
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switch(policy) {
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case SCHED_RR:
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rtp->type = RTP_PRIO_REALTIME;
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rtp->prio = RTP_PRIO_MAX - param->sched_priority;
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break;
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case SCHED_FIFO:
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rtp->type = RTP_PRIO_FIFO;
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rtp->prio = RTP_PRIO_MAX - param->sched_priority;
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break;
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case SCHED_OTHER:
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default:
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rtp->type = RTP_PRIO_NORMAL;
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rtp->prio = 0;
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break;
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}
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return (0);
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}
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int
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_thr_getscheduler(lwpid_t lwpid, int *policy, struct sched_param *param)
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{
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struct rtprio rtp;
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int ret;
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ret = rtprio_thread(RTP_LOOKUP, lwpid, &rtp);
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if (ret == -1)
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return (ret);
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_rtp_to_schedparam(&rtp, policy, param);
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return (0);
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}
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int
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_thr_setscheduler(lwpid_t lwpid, int policy, const struct sched_param *param)
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{
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struct rtprio rtp;
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_schedparam_to_rtp(policy, param, &rtp);
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return (rtprio_thread(RTP_SET, lwpid, &rtp));
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}
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