chfs_pool.c revision 1.2.2.2
1 1.2.2.2 yamt /* $NetBSD: chfs_pool.c,v 1.2.2.2 2012/04/17 00:08:54 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /*- 4 1.2.2.2 yamt * Copyright (c) 2010 Department of Software Engineering, 5 1.2.2.2 yamt * University of Szeged, Hungary 6 1.2.2.2 yamt * All rights reserved. 7 1.2.2.2 yamt * 8 1.2.2.2 yamt * This code is derived from software contributed to The NetBSD Foundation 9 1.2.2.2 yamt * by the Department of Software Engineering, University of Szeged, Hungary 10 1.2.2.2 yamt * 11 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 12 1.2.2.2 yamt * modification, are permitted provided that the following conditions 13 1.2.2.2 yamt * are met: 14 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 18 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 19 1.2.2.2 yamt * 20 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 1.2.2.2 yamt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 1.2.2.2 yamt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 1.2.2.2 yamt * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 1.2.2.2 yamt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 1.2.2.2 yamt * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 1.2.2.2 yamt * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 1.2.2.2 yamt * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 1.2.2.2 yamt * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 1.2.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 1.2.2.2 yamt * SUCH DAMAGE. 31 1.2.2.2 yamt */ 32 1.2.2.2 yamt 33 1.2.2.2 yamt /* 34 1.2.2.2 yamt * Pool allocator and convenience routines for chfs. 35 1.2.2.2 yamt */ 36 1.2.2.2 yamt 37 1.2.2.2 yamt #include <sys/cdefs.h> 38 1.2.2.2 yamt 39 1.2.2.2 yamt #include <sys/param.h> 40 1.2.2.2 yamt #include <sys/pool.h> 41 1.2.2.2 yamt #include <sys/atomic.h> 42 1.2.2.2 yamt 43 1.2.2.2 yamt #include <uvm/uvm.h> 44 1.2.2.2 yamt 45 1.2.2.2 yamt #include "chfs.h" 46 1.2.2.2 yamt //#include </root/xipffs/netbsd.chfs/chfs.h> 47 1.2.2.2 yamt 48 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 49 1.2.2.2 yamt 50 1.2.2.2 yamt void * chfs_pool_page_alloc(struct pool *, int); 51 1.2.2.2 yamt void chfs_pool_page_free(struct pool *, void *); 52 1.2.2.2 yamt 53 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 54 1.2.2.2 yamt 55 1.2.2.2 yamt struct pool_allocator chfs_pool_allocator = { 56 1.2.2.2 yamt .pa_alloc = chfs_pool_page_alloc, 57 1.2.2.2 yamt .pa_free = chfs_pool_page_free, 58 1.2.2.2 yamt }; 59 1.2.2.2 yamt 60 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 61 1.2.2.2 yamt 62 1.2.2.2 yamt void 63 1.2.2.2 yamt chfs_pool_init(struct chfs_pool *chpp, size_t size, const char *what, 64 1.2.2.2 yamt struct chfs_mount *chmp) 65 1.2.2.2 yamt { 66 1.2.2.2 yamt int cnt; 67 1.2.2.2 yamt 68 1.2.2.2 yamt cnt = snprintf(chpp->chp_name, sizeof(chpp->chp_name), 69 1.2.2.2 yamt "%s_chfs_%p", what, chmp); 70 1.2.2.2 yamt KASSERT(cnt < sizeof(chpp->chp_name)); 71 1.2.2.2 yamt 72 1.2.2.2 yamt pool_init(&chpp->chp_pool, size, 0, 0, 0, chpp->chp_name, 73 1.2.2.2 yamt &chfs_pool_allocator, IPL_NONE); 74 1.2.2.2 yamt chpp->chp_mount = chmp; 75 1.2.2.2 yamt } 76 1.2.2.2 yamt 77 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 78 1.2.2.2 yamt 79 1.2.2.2 yamt void 80 1.2.2.2 yamt chfs_pool_destroy(struct chfs_pool *chpp) 81 1.2.2.2 yamt { 82 1.2.2.2 yamt pool_destroy((struct pool *)chpp); 83 1.2.2.2 yamt } 84 1.2.2.2 yamt 85 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 86 1.2.2.2 yamt 87 1.2.2.2 yamt void * 88 1.2.2.2 yamt chfs_pool_page_alloc(struct pool *pp, int flags) 89 1.2.2.2 yamt { 90 1.2.2.2 yamt struct chfs_pool *chpp; 91 1.2.2.2 yamt struct chfs_mount *chmp; 92 1.2.2.2 yamt unsigned int pages; 93 1.2.2.2 yamt void *page; 94 1.2.2.2 yamt dbg("CHFS: pool_page_alloc()\n"); 95 1.2.2.2 yamt 96 1.2.2.2 yamt chpp = (struct chfs_pool *)pp; 97 1.2.2.2 yamt chmp = chpp->chp_mount; 98 1.2.2.2 yamt 99 1.2.2.2 yamt pages = atomic_inc_uint_nv(&chmp->chm_pages_used); 100 1.2.2.2 yamt if (pages >= CHFS_PAGES_MAX(chmp)) { 101 1.2.2.2 yamt atomic_dec_uint(&chmp->chm_pages_used); 102 1.2.2.2 yamt return NULL; 103 1.2.2.2 yamt } 104 1.2.2.2 yamt page = pool_get(pp, flags | PR_WAITOK); 105 1.2.2.2 yamt if (page == NULL) { 106 1.2.2.2 yamt atomic_dec_uint(&chmp->chm_pages_used); 107 1.2.2.2 yamt } 108 1.2.2.2 yamt 109 1.2.2.2 yamt return page; 110 1.2.2.2 yamt } 111 1.2.2.2 yamt 112 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 113 1.2.2.2 yamt 114 1.2.2.2 yamt void 115 1.2.2.2 yamt chfs_pool_page_free(struct pool *pp, void *v) 116 1.2.2.2 yamt { 117 1.2.2.2 yamt struct chfs_pool *chpp; 118 1.2.2.2 yamt struct chfs_mount *chmp; 119 1.2.2.2 yamt dbg("CHFS: pool_page_free()\n"); 120 1.2.2.2 yamt 121 1.2.2.2 yamt chpp = (struct chfs_pool *)pp; 122 1.2.2.2 yamt chmp = chpp->chp_mount; 123 1.2.2.2 yamt 124 1.2.2.2 yamt atomic_dec_uint(&chmp->chm_pages_used); 125 1.2.2.2 yamt pool_put(pp,v); 126 1.2.2.2 yamt } 127 1.2.2.2 yamt 128 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 129 1.2.2.2 yamt 130 1.2.2.2 yamt void 131 1.2.2.2 yamt chfs_str_pool_init(struct chfs_str_pool *chsp, struct chfs_mount *chmp) 132 1.2.2.2 yamt { 133 1.2.2.2 yamt dbg("CHFS: str_pool_init()\n"); 134 1.2.2.2 yamt 135 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_16, 16, "str", chmp); 136 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_32, 32, "str", chmp); 137 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_64, 64, "str", chmp); 138 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_128, 128, "str", chmp); 139 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_256, 256, "str", chmp); 140 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_512, 512, "str", chmp); 141 1.2.2.2 yamt chfs_pool_init(&chsp->chsp_pool_1024, 1024, "str", chmp); 142 1.2.2.2 yamt } 143 1.2.2.2 yamt 144 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 145 1.2.2.2 yamt 146 1.2.2.2 yamt void 147 1.2.2.2 yamt chfs_str_pool_destroy(struct chfs_str_pool *chsp) 148 1.2.2.2 yamt { 149 1.2.2.2 yamt dbg("CHFS: str_pool_destroy()\n"); 150 1.2.2.2 yamt 151 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_16); 152 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_32); 153 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_64); 154 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_128); 155 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_256); 156 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_512); 157 1.2.2.2 yamt chfs_pool_destroy(&chsp->chsp_pool_1024); 158 1.2.2.2 yamt } 159 1.2.2.2 yamt 160 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 161 1.2.2.2 yamt 162 1.2.2.2 yamt char * 163 1.2.2.2 yamt chfs_str_pool_get(struct chfs_str_pool *chsp, size_t len, int flags) 164 1.2.2.2 yamt { 165 1.2.2.2 yamt struct chfs_pool *p; 166 1.2.2.2 yamt dbg("CHFS: str_pool_get()\n"); 167 1.2.2.2 yamt 168 1.2.2.2 yamt KASSERT(len <= 1024); 169 1.2.2.2 yamt 170 1.2.2.2 yamt if (len <= 16) p = &chsp->chsp_pool_16; 171 1.2.2.2 yamt else if (len <= 32) p = &chsp->chsp_pool_32; 172 1.2.2.2 yamt else if (len <= 64) p = &chsp->chsp_pool_64; 173 1.2.2.2 yamt else if (len <= 128) p = &chsp->chsp_pool_128; 174 1.2.2.2 yamt else if (len <= 256) p = &chsp->chsp_pool_256; 175 1.2.2.2 yamt else if (len <= 512) p = &chsp->chsp_pool_512; 176 1.2.2.2 yamt else if (len <= 1024) p = &chsp->chsp_pool_1024; 177 1.2.2.2 yamt else { 178 1.2.2.2 yamt KASSERT(0); 179 1.2.2.2 yamt p = NULL; /* Silence compiler warnings */ 180 1.2.2.2 yamt } 181 1.2.2.2 yamt 182 1.2.2.2 yamt return (char *)CHFS_POOL_GET(p, flags); 183 1.2.2.2 yamt } 184 1.2.2.2 yamt 185 1.2.2.2 yamt /* --------------------------------------------------------------------- */ 186 1.2.2.2 yamt 187 1.2.2.2 yamt void 188 1.2.2.2 yamt chfs_str_pool_put(struct chfs_str_pool *chsp, char *str, size_t len) 189 1.2.2.2 yamt { 190 1.2.2.2 yamt struct chfs_pool *p; 191 1.2.2.2 yamt dbg("CHFS: str_pool_put()\n"); 192 1.2.2.2 yamt 193 1.2.2.2 yamt KASSERT(len <= 1024); 194 1.2.2.2 yamt 195 1.2.2.2 yamt if (len <= 16) p = &chsp->chsp_pool_16; 196 1.2.2.2 yamt else if (len <= 32) p = &chsp->chsp_pool_32; 197 1.2.2.2 yamt else if (len <= 64) p = &chsp->chsp_pool_64; 198 1.2.2.2 yamt else if (len <= 128) p = &chsp->chsp_pool_128; 199 1.2.2.2 yamt else if (len <= 256) p = &chsp->chsp_pool_256; 200 1.2.2.2 yamt else if (len <= 512) p = &chsp->chsp_pool_512; 201 1.2.2.2 yamt else if (len <= 1024) p = &chsp->chsp_pool_1024; 202 1.2.2.2 yamt else { 203 1.2.2.2 yamt KASSERT(0); 204 1.2.2.2 yamt p = NULL; /* Silence compiler warnings */ 205 1.2.2.2 yamt } 206 1.2.2.2 yamt 207 1.2.2.2 yamt CHFS_POOL_PUT(p, str); 208 1.2.2.2 yamt } 209
Indexes created Tue Oct 14 21:09:58 GMT 2025