d65f6f7009
. common/include/arch/i386 is not actually an imported sys/arch/i386/include but leftover Minix files; remove and move to include/ . move include/ufs to sys/ufs, where it came from, now that we have a sys/ hierarchy . move mdocml/ to external/bsd/, now we have that . single sys/arch/i386/stand/ import for boot stuff
211 lines
6.2 KiB
C
211 lines
6.2 KiB
C
/* $NetBSD: chfs_pool.c,v 1.1 2011/11/24 15:51:31 ahoka Exp $ */
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/*-
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* Copyright (c) 2010 Department of Software Engineering,
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* University of Szeged, Hungary
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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 the Department of Software Engineering, University of Szeged, Hungary
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Pool allocator and convenience routines for chfs.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/pool.h>
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#include <sys/atomic.h>
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#include <uvm/uvm.h>
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#include "chfs.h"
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//#include </root/xipffs/netbsd.chfs/chfs.h>
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/* --------------------------------------------------------------------- */
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void * chfs_pool_page_alloc(struct pool *, int);
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void chfs_pool_page_free(struct pool *, void *);
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extern void* pool_page_alloc_nointr(struct pool *, int);
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extern void pool_page_free_nointr(struct pool *, void *);
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/* --------------------------------------------------------------------- */
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struct pool_allocator chfs_pool_allocator = {
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.pa_alloc = chfs_pool_page_alloc,
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.pa_free = chfs_pool_page_free,
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};
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/* --------------------------------------------------------------------- */
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void
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chfs_pool_init(struct chfs_pool *chpp, size_t size, const char *what,
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struct chfs_mount *chmp)
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{
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int cnt;
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cnt = snprintf(chpp->chp_name, sizeof(chpp->chp_name),
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"%s_chfs_%p", what, chmp);
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KASSERT(cnt < sizeof(chpp->chp_name));
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pool_init(&chpp->chp_pool, size, 0, 0, 0, chpp->chp_name,
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&chfs_pool_allocator, IPL_NONE);
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chpp->chp_mount = chmp;
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}
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/* --------------------------------------------------------------------- */
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void
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chfs_pool_destroy(struct chfs_pool *chpp)
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{
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pool_destroy((struct pool *)chpp);
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}
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/* --------------------------------------------------------------------- */
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void *
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chfs_pool_page_alloc(struct pool *pp, int flags)
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{
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struct chfs_pool *chpp;
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struct chfs_mount *chmp;
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unsigned int pages;
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void *page;
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dbg("CHFS: pool_page_alloc()\n");
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chpp = (struct chfs_pool *)pp;
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chmp = chpp->chp_mount;
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pages = atomic_inc_uint_nv(&chmp->chm_pages_used);
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if (pages >= CHFS_PAGES_MAX(chmp)) {
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atomic_dec_uint(&chmp->chm_pages_used);
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return NULL;
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}
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page = pool_page_alloc_nointr(pp, flags | PR_WAITOK);
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if (page == NULL) {
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atomic_dec_uint(&chmp->chm_pages_used);
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}
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return page;
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}
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/* --------------------------------------------------------------------- */
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void
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chfs_pool_page_free(struct pool *pp, void *v)
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{
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struct chfs_pool *chpp;
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struct chfs_mount *chmp;
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dbg("CHFS: pool_page_free()\n");
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chpp = (struct chfs_pool *)pp;
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chmp = chpp->chp_mount;
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atomic_dec_uint(&chmp->chm_pages_used);
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pool_page_free_nointr(pp, v);
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}
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/* --------------------------------------------------------------------- */
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void
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chfs_str_pool_init(struct chfs_str_pool *chsp, struct chfs_mount *chmp)
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{
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dbg("CHFS: str_pool_init()\n");
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chfs_pool_init(&chsp->chsp_pool_16, 16, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_32, 32, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_64, 64, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_128, 128, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_256, 256, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_512, 512, "str", chmp);
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chfs_pool_init(&chsp->chsp_pool_1024, 1024, "str", chmp);
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}
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/* --------------------------------------------------------------------- */
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void
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chfs_str_pool_destroy(struct chfs_str_pool *chsp)
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{
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dbg("CHFS: str_pool_destroy()\n");
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chfs_pool_destroy(&chsp->chsp_pool_16);
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chfs_pool_destroy(&chsp->chsp_pool_32);
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chfs_pool_destroy(&chsp->chsp_pool_64);
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chfs_pool_destroy(&chsp->chsp_pool_128);
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chfs_pool_destroy(&chsp->chsp_pool_256);
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chfs_pool_destroy(&chsp->chsp_pool_512);
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chfs_pool_destroy(&chsp->chsp_pool_1024);
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}
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/* --------------------------------------------------------------------- */
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char *
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chfs_str_pool_get(struct chfs_str_pool *chsp, size_t len, int flags)
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{
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struct chfs_pool *p;
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dbg("CHFS: str_pool_get()\n");
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KASSERT(len <= 1024);
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if (len <= 16) p = &chsp->chsp_pool_16;
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else if (len <= 32) p = &chsp->chsp_pool_32;
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else if (len <= 64) p = &chsp->chsp_pool_64;
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else if (len <= 128) p = &chsp->chsp_pool_128;
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else if (len <= 256) p = &chsp->chsp_pool_256;
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else if (len <= 512) p = &chsp->chsp_pool_512;
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else if (len <= 1024) p = &chsp->chsp_pool_1024;
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else {
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KASSERT(0);
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p = NULL; /* Silence compiler warnings */
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}
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return (char *)CHFS_POOL_GET(p, flags);
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}
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/* --------------------------------------------------------------------- */
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void
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chfs_str_pool_put(struct chfs_str_pool *chsp, char *str, size_t len)
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{
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struct chfs_pool *p;
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dbg("CHFS: str_pool_put()\n");
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KASSERT(len <= 1024);
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if (len <= 16) p = &chsp->chsp_pool_16;
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else if (len <= 32) p = &chsp->chsp_pool_32;
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else if (len <= 64) p = &chsp->chsp_pool_64;
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else if (len <= 128) p = &chsp->chsp_pool_128;
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else if (len <= 256) p = &chsp->chsp_pool_256;
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else if (len <= 512) p = &chsp->chsp_pool_512;
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else if (len <= 1024) p = &chsp->chsp_pool_1024;
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else {
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KASSERT(0);
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p = NULL; /* Silence compiler warnings */
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}
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CHFS_POOL_PUT(p, str);
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}
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