sched.h revision 1.4
1/* $NetBSD: sched.h,v 1.4 2014/10/22 11:41:34 nonaka Exp $ */ 2 3/*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _LINUX_SCHED_H_ 33#define _LINUX_SCHED_H_ 34 35#include <sys/param.h> 36#include <sys/kernel.h> 37#include <sys/proc.h> 38 39#define TASK_COMM_LEN MAXCOMLEN 40 41#define current curproc 42 43static inline pid_t 44task_pid_nr(struct proc *p) 45{ 46 return p->p_pid; 47} 48 49static inline long 50schedule_timeout_uninterruptible(long timeout) 51{ 52 int start, end; 53 54 if (cold) { 55 DELAY(timeout); 56 return 0; 57 } 58 59 start = hardclock_ticks; 60 /* XXX Integer truncation...not likely to matter here. */ 61 (void)kpause("loonix", false /*!intr*/, timeout, NULL); 62 end = hardclock_ticks; 63 64 return (end - start) > 0 ? (end - start) : 0; 65} 66 67#endif /* _LINUX_SCHED_H_ */ 68