* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
-/*
- * HISTORY
- *
- * Revision 1.1.1.1 1998/09/22 21:05:32 wsanchez
- * Import of Mac OS X kernel (~semeria)
- *
- * Revision 1.1.1.1 1998/03/07 02:25:57 wsanchez
- * Import of OSF Mach kernel (~mburg)
- *
- * Revision 1.1.11.7 1995/06/13 18:58:49 bolinger
- * Fix ri-osc CR1391: New return type from thread_swapin_blocking().
- * [1995/06/13 18:56:52 bolinger]
- *
- * Revision 1.1.11.6 1995/06/05 21:46:36 dwm
- * ri-osc CR1357 - ensure activation being returned to is swapped in.
- * added thread_swapin_blocking [bolinger]
- * [1995/06/05 21:34:08 dwm]
- *
- * Revision 1.1.11.5 1995/05/19 15:48:34 bernadat
- * Let thread swapping be configurable.
- * [95/05/19 bernadat]
- *
- * Revision 1.1.11.4 1995/04/07 19:04:46 barbou
- * Merged into mainline.
- * [95/03/09 barbou]
- *
- * Revision 1.1.12.2 1995/02/13 15:59:18 barbou
- * Merged/ported to MK6.
- *
- * Revision 1.1.9.3 1994/08/12 14:22:30 barbou
- * Overwritten with copy from IK.
- * Old kern/thread_swap.h was renamed kern/thread_handoff.c.
- * Added prototype for thread_swapout and thread_swapout_enqueue.
- * [94/07/28 barbou]
- *
- * Revision 3.0.3.2 1994/01/20 19:53:20 chasb
- * Remove excessively restrictive copyright notice
- * [1994/01/20 17:50:56 chasb]
- *
- * Revision 3.0.3.1 1993/12/20 21:07:59 gupta
- * Expanded C O P Y R I G H T
- * [1993/12/17 22:19:43 gupta]
- *
- * Revision 3.0 1992/12/31 22:08:45 ede
- * Initial revision for OSF/1 R1.3
- *
- * Revision 1.6.2.2 1992/01/22 22:14:42 gmf
- * Added TH_SW_TASK_SWAPPING flag to swap_state. This state
- * indicates that the thread is about to be swapped out by
- * the task swapping mechanism, and prevents the thread
- * swapper from doing it first.
- * [1992/01/20 22:06:36 gmf]
- *
- * Revision 1.6 1991/08/15 19:16:39 devrcs
- * Prototype all functions, change name to thread_swapper_init.
- * [91/06/26 10:45:44 jeffc]
- *
- * Revision 1.5 91/06/10 16:19:07 devrcs
- * Additions to allow thread to be made non-swappable on swap in,
- * change thread_swapin interface.
- * [91/05/30 15:56:38 jeffc]
- *
- * Revision 1.4 91/03/04 17:07:14 devrcs
- * A small step toward ansiC: commented else/endif/elif trailers.
- * [91/01/12 16:39:43 dwm]
- *
- * Revision 1.3 90/10/07 13:57:13 devrcs
- * Added EndLog Marker.
- * [90/09/28 09:59:56 gm]
- *
- * Revision 1.2 90/01/02 20:06:28 gm
- * Fixes for first snapshot.
- *
- * Revision 1.1 89/10/16 19:36:28 gm
- * Mach 2.5 and Encore 0.6 merge
- *
- * Revision 2.4 89/03/09 20:17:07 rpd
- * More cleanup.
- *
- * Revision 2.3 89/02/25 18:10:24 gm0w
- * Kernel code cleanup.
- * Put entire file under #indef KERNEL.
- * [89/02/15 mrt]
- *
- * Revision 0.0 88/01/21 dbg
- * Created.
- * [88/01/21 dbg]
- *
- * $EndLog$
- */
+
/*
* File: kern/thread_swap.h
*
- * Declarations of thread swap_states and swapping routines.
- */
-
-/*
- * Swap states for threads.
+ * Declarations of thread "swapping" routines.
*/
#ifndef _KERN_THREAD_SWAP_H_
#define _KERN_THREAD_SWAP_H_
-#if 1 /* USED CODE */
-
/*
* exported routines
*/
-extern void swapper_init();
-extern void thread_swapin(thread_t thread);
-extern void thread_doswapin(thread_t thread);
-extern void swapin_thread();
-
-#define thread_swappable(act, bool)
-
-
-#else /* UNUSED SWAPPER CODE */
-#if THREAD_SWAPPER
-#define TH_SW_STATE 7 /* mask of swap state bits */
-#define TH_SW_UNSWAPPABLE 1 /* not swappable */
-#define TH_SW_IN 2 /* swapped in */
-#define TH_SW_GOING_OUT 3 /* being swapped out */
-#define TH_SW_WANT_IN 4 /* being swapped out, but should
- immediately be swapped in */
-#define TH_SW_OUT 5 /* swapped out */
-#define TH_SW_COMING_IN 6 /* queued for swapin, or being
- swapped in */
-
-#define TH_SW_MAKE_UNSWAPPABLE 8 /*not state, command to swapin_thread */
-
-/*
- * This flag is only used by the task swapper. It implies that
- * the thread is about to be swapped, but hasn't yet.
- */
-#define TH_SW_TASK_SWAPPING 0x10
-
-/*
- * exported routines
- */
-extern void thread_swapper_init(void);
-extern void swapin_thread(void);
-extern void swapout_thread(void);
-extern void thread_doswapin(thread_act_t thr_act);
-extern void thread_swapin(thread_act_t thr_act,
- boolean_t make_unswappable);
-extern boolean_t
- thread_swapin_blocking(thread_act_t thr_act);
-extern void thread_swapout(thread_act_t thr_act);
-extern void swapout_threads(boolean_t now);
-extern void thread_swapout_enqueue(thread_act_t thr_act);
-extern void thread_swap_disable(thread_act_t thr_act);
-
-extern void thread_swappable(thread_act_t thr_act, boolean_t swappable);
-
-#else /* THREAD_SWAPPER */
-#define thread_swappable(thr_act, swappable)
-#endif /* THREAD_SWAPPER */
-
-#endif /* UNUSED SWAPPER CODE */
+extern void swapin_init(void);
+extern void thread_swapin(
+ thread_t thread);
+extern void thread_doswapin(
+ thread_t thread);
#endif /*_KERN_THREAD_SWAP_H_*/
-
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