62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
/* @(#)cntxt.h 1.1 94/10/31 Copyr 1987 Sun Micro */
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/* Copyright (C) 1987. Sun Microsystems, Inc. */
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/*
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* This source code is a product of Sun Microsystems, Inc. and is provided
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* for unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify this source code without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* THIS PROGRAM CONTAINS SOURCE CODE COPYRIGHTED BY SUN MICROSYSTEMS, INC.
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* AND IS LICENSED TO SUNSOFT, INC., A SUBSIDIARY OF SUN MICROSYSTEMS, INC.
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* SUN MICROSYSTEMS, INC., MAKES NO REPRESENTATIONS ABOUT THE SUITABLITY
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* OF SUCH SOURCE CODE FOR ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT
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* EXPRESS OR IMPLIED WARRANTY OF ANY KIND. SUN MICROSYSTEMS, INC. DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO SUCH SOURCE CODE, INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN
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* NO EVENT SHALL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT,
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* INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM USE OF SUCH SOURCE CODE, REGARDLESS OF THE THEORY OF LIABILITY.
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*
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* This source code is provided with no support and without any obligation on
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* the part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS
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* SOURCE CODE OR ANY PART THEREOF.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/* context manipulation functions */
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#ifndef _lwp_cntxt_h
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#define _lwp_cntxt_h
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typedef struct cntxt_actions_t {
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void (*cntxt_save)(); /* save context info */
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void (*cntxt_restore)(); /* restore context info */
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int cntxt_memtype; /* memory type for the context */
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bool_t cntxt_optimize; /* enable optimize on context switch */
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} cntxt_actions_t;
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/* per-thread context descriptor */
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typedef struct context_t {
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__queue_t ctx_next; /* chain of contexts belonging to thread */
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int ctx_type; /* cookie bound to context memory */
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caddr_t ctx_mem; /* context memory */
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} context_t;
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#define CONTEXTNULL ((context_t *)0)
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extern void __init_ctx();
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extern void __freectxt();
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extern void __ctx_change();
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extern int CtxType;
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#define MAXSWTCHACTS 20
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#endif /*!_lwp_cntxt_h*/
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