pthread_md.h revision 113656
1/*- 2 * Copyright (c) 2002 Daniel Eischen <deischen@freebsd.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/lib/libkse/arch/i386/include/pthread_md.h 113656 2003-04-18 05:00:52Z deischen $ 27 */ 28/* 29 * Machine-dependent thread prototypes/definitions for the thread kernel. 30 */ 31#ifndef _PTHREAD_MD_H_ 32#define _PTHREAD_MD_H_ 33 34#include <sys/kse.h> 35#include <setjmp.h> 36#include <ucontext.h> 37 38extern int _thread_enter_uts(struct kse_thr_mailbox *, struct kse_mailbox *); 39extern int _thread_switch(struct kse_thr_mailbox *, struct kse_thr_mailbox **); 40extern int _thr_setcontext(ucontext_t *); 41extern int _thr_getcontext(ucontext_t *); 42 43/* 44 * These are needed to ensure an application doesn't attempt to jump 45 * between stacks of different threads. They return the stack of 46 * jmp_buf, sigjmp_buf, and ucontext respectively. 47 */ 48#define GET_STACK_JB(jb) ((unsigned long)((jb)[0]._jb[2])) 49#define GET_STACK_SJB(sjb) ((unsigned long)((sjb)[0]._sjb[2])) 50#define GET_STACK_UC(ucp) ((unsigned long)((ucp)->uc_mcontext.mc_esp)) 51 52#define THR_GETCONTEXT(ucp) _thr_getcontext(ucp) 53#define THR_SETCONTEXT(ucp) _thr_setcontext(ucp) 54#endif 55