6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/* $NetBSD: lwpctl.h,v 1.4 2008/04/28 20:24:10 martin Exp $ */
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/*-
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* Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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, this list of conditions and the following 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if !defined(_SYS_LWPCTL_H_)
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#define _SYS_LWPCTL_H_
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/*
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* Note on compatibility:
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*
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* This must be the same size for both 32 and 64-bit processes, since
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* the same format will be used by both.
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*
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* Removal of unused fields is OK, as long as the change in layout
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* does not affect supported fields.
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*
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* It is OK to add fields to this structure, since the kernel allocates
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* the space. Re-use of fields is more complicated - see the feature
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* word passed to the system call.
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*/
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typedef struct lwpctl {
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volatile int lc_curcpu;
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volatile int lc_pctr;
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} lwpctl_t;
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#define LWPCTL_CPU_NONE (-1)
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#define LWPCTL_CPU_EXITED (-2)
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#define LWPCTL_FEATURE_CURCPU 0x00000001
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#define LWPCTL_FEATURE_PCTR 0x00000002
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#if defined(_KERNEL)
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#include <sys/mutex.h>
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#include <uvm/uvm_extern.h>
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typedef struct lcpage {
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TAILQ_ENTRY(lcpage) lcp_chain;
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vaddr_t lcp_uaddr;
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vaddr_t lcp_kaddr;
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u_int lcp_nfree;
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u_int lcp_rotor;
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u_int lcp_bitmap[1];
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} lcpage_t;
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typedef struct lcproc {
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kmutex_t lp_lock;
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struct uvm_object *lp_uao;
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TAILQ_HEAD(,lcpage) lp_pages;
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vaddr_t lp_cur;
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vaddr_t lp_max;
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vaddr_t lp_uva;
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} lcproc_t;
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#define LWPCTL_PER_PAGE ((PAGE_SIZE / sizeof(lwpctl_t)) & ~31)
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#define LWPCTL_BITMAP_ENTRIES (LWPCTL_PER_PAGE >> 5)
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#define LWPCTL_BITMAP_SZ (LWPCTL_BITMAP_ENTRIES * sizeof(u_int))
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#define LWPCTL_LCPAGE_SZ \
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(sizeof(lcpage_t) - sizeof(u_int) + LWPCTL_BITMAP_SZ)
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#define LWPCTL_UAREA_SZ \
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(round_page(MAX_LWP_PER_PROC * sizeof(lwpctl_t)))
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int lwp_ctl_alloc(vaddr_t *);
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void lwp_ctl_free(lwp_t *);
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void lwp_ctl_exit(void);
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#endif /* defined(_KERNEL) */
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#endif /* !_SYS_LWPCTL_H_ */
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