| | varnish-cache/bin/varnishd/storage/storage_simple.c |
|---|
| 0 |
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/*- |
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* Copyright (c) 2007-2015 Varnish Software AS |
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* All rights reserved. |
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* |
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* Author: Poul-Henning Kamp <phk@phk.freebsd.dk> |
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* |
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* SPDX-License-Identifier: BSD-2-Clause |
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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 AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, 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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|
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#include "config.h" |
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|
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#include "cache/cache_varnishd.h" |
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|
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2721 |
#include "cache/cache_obj.h" |
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2219 |
#include "cache/cache_objhead.h" |
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514 |
|
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356 |
#include "storage/storage.h" |
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2219 |
#include "storage/storage_simple.h" |
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|
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#include "vtim.h" |
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|
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/* Flags for allocating memory in sml_stv_alloc */ |
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#define LESS_MEM_ALLOCED_IS_OK 1 |
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3007 |
|
| 46 |
5730 |
// marker pointer for sml_trimstore |
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static void *trim_once = &trim_once; |
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|
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/*-------------------------------------------------------------------*/ |
| 50 |
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|
| 51 |
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static struct storage * |
| 52 |
3976 |
objallocwithnuke(struct worker *, const struct stevedore *, ssize_t size, |
| 53 |
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int flags); |
| 54 |
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|
| 55 |
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static struct storage * |
| 56 |
3387 |
sml_stv_alloc(const struct stevedore *stv, ssize_t size, int flags) |
| 57 |
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{ |
| 58 |
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struct storage *st; |
| 59 |
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|
| 60 |
3387 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 61 |
3387 |
AN(stv->sml_alloc); |
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|
| 63 |
3387 |
if (!(flags & LESS_MEM_ALLOCED_IS_OK)) { |
| 64 |
583 |
if (size > cache_param->fetch_maxchunksize) |
| 65 |
0 |
return (NULL); |
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else |
| 67 |
583 |
return (stv->sml_alloc(stv, size)); |
| 68 |
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} |
| 69 |
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|
| 70 |
2804 |
if (size > cache_param->fetch_maxchunksize) |
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0 |
size = cache_param->fetch_maxchunksize; |
| 72 |
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|
| 73 |
2804 |
assert(size <= UINT_MAX); /* field limit in struct storage */ |
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|
| 75 |
2939 |
for (;;) { |
| 76 |
|
/* try to allocate from it */ |
| 77 |
2939 |
assert(size > 0); |
| 78 |
2939 |
st = stv->sml_alloc(stv, size); |
| 79 |
2939 |
if (st != NULL) |
| 80 |
2793 |
break; |
| 81 |
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|
| 82 |
146 |
if (size <= cache_param->fetch_chunksize) |
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11 |
break; |
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|
| 85 |
135 |
size /= 2; |
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} |
| 87 |
2804 |
CHECK_OBJ_ORNULL(st, STORAGE_MAGIC); |
| 88 |
2804 |
return (st); |
| 89 |
3387 |
} |
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|
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static void |
| 92 |
4374 |
sml_stv_free(const struct stevedore *stv, struct storage *st) |
| 93 |
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{ |
| 94 |
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|
| 95 |
4374 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 96 |
4374 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 97 |
4374 |
if (stv->sml_free != NULL) |
| 98 |
4374 |
stv->sml_free(st); |
| 99 |
4374 |
} |
| 100 |
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|
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/*-------------------------------------------------------------------- |
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* This function is called by stevedores ->allocobj() method, which |
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* very often will be SML_allocobj() below, to convert a slab |
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* of storage into object which the stevedore can then register in its |
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* internal state, before returning it to STV_NewObject(). |
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* As you probably guessed: All this for persistence. |
| 107 |
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*/ |
| 108 |
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|
| 109 |
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struct object * |
| 110 |
2842 |
SML_MkObject(const struct stevedore *stv, struct objcore *oc, void *ptr) |
| 111 |
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{ |
| 112 |
|
struct object *o; |
| 113 |
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|
| 114 |
2842 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 115 |
2842 |
AN(stv->methods); |
| 116 |
2842 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 117 |
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|
| 118 |
2842 |
assert(PAOK(ptr)); |
| 119 |
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|
| 120 |
2842 |
o = ptr; |
| 121 |
2842 |
INIT_OBJ(o, OBJECT_MAGIC); |
| 122 |
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|
| 123 |
2842 |
VTAILQ_INIT(&o->list); |
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|
| 125 |
2842 |
oc->stobj->stevedore = stv; |
| 126 |
2842 |
oc->stobj->priv = o; |
| 127 |
2842 |
oc->stobj->priv2 = 0; |
| 128 |
2842 |
return (o); |
| 129 |
|
} |
| 130 |
|
|
| 131 |
|
/*-------------------------------------------------------------------- |
| 132 |
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* This is the default ->allocobj() which all stevedores who do not |
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* implement persistent storage can rely on. |
| 134 |
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*/ |
| 135 |
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|
| 136 |
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int v_matchproto_(storage_allocobj_f) |
| 137 |
2831 |
SML_allocobj(struct worker *wrk, const struct stevedore *stv, |
| 138 |
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struct objcore *oc, unsigned wsl) |
| 139 |
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{ |
| 140 |
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struct object *o; |
| 141 |
2831 |
struct storage *st = NULL; |
| 142 |
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unsigned ltot; |
| 143 |
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|
| 144 |
2831 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 145 |
2831 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 146 |
2831 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 147 |
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|
| 148 |
2831 |
AN(stv->sml_alloc); |
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|
| 150 |
2831 |
ltot = sizeof(*o) + PRNDUP(wsl); |
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|
| 152 |
2831 |
do { |
| 153 |
2834 |
st = stv->sml_alloc(stv, ltot); |
| 154 |
2834 |
if (st != NULL && st->space < ltot) { |
| 155 |
0 |
stv->sml_free(st); |
| 156 |
0 |
st = NULL; |
| 157 |
0 |
} |
| 158 |
2834 |
} while (st == NULL && LRU_NukeOne(wrk, stv->lru)); |
| 159 |
2831 |
if (st == NULL) |
| 160 |
11 |
return (0); |
| 161 |
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|
| 162 |
2820 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 163 |
2820 |
o = SML_MkObject(stv, oc, st->ptr); |
| 164 |
2820 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 165 |
2820 |
st->len = sizeof(*o); |
| 166 |
2820 |
o->objstore = st; |
| 167 |
2820 |
return (1); |
| 168 |
2831 |
} |
| 169 |
|
|
| 170 |
|
void * v_matchproto_(storage_allocbuf_t) |
| 171 |
269 |
SML_AllocBuf(struct worker *wrk, const struct stevedore *stv, size_t size, |
| 172 |
|
uintptr_t *ppriv) |
| 173 |
|
{ |
| 174 |
|
struct storage *st; |
| 175 |
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|
| 176 |
269 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 177 |
269 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 178 |
269 |
AN(ppriv); |
| 179 |
|
|
| 180 |
269 |
if (size > UINT_MAX) |
| 181 |
0 |
return (NULL); |
| 182 |
269 |
st = objallocwithnuke(wrk, stv, size, 0); |
| 183 |
269 |
if (st == NULL) |
| 184 |
0 |
return (NULL); |
| 185 |
269 |
assert(st->space >= size); |
| 186 |
269 |
st->flags = STORAGE_F_BUFFER; |
| 187 |
269 |
st->len = size; |
| 188 |
269 |
*ppriv = (uintptr_t)st; |
| 189 |
269 |
return (st->ptr); |
| 190 |
269 |
} |
| 191 |
|
|
| 192 |
|
void v_matchproto_(storage_freebuf_t) |
| 193 |
269 |
SML_FreeBuf(struct worker *wrk, const struct stevedore *stv, uintptr_t priv) |
| 194 |
|
{ |
| 195 |
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struct storage *st; |
| 196 |
|
|
| 197 |
269 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 198 |
269 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 199 |
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|
| 200 |
269 |
CAST_OBJ_NOTNULL(st, (void *)priv, STORAGE_MAGIC); |
| 201 |
269 |
assert(st->flags == STORAGE_F_BUFFER); |
| 202 |
269 |
sml_stv_free(stv, st); |
| 203 |
269 |
} |
| 204 |
|
|
| 205 |
|
/*--------------------------------------------------------------------- |
| 206 |
|
*/ |
| 207 |
|
|
| 208 |
|
static struct object * |
| 209 |
154721 |
sml_getobj(struct worker *wrk, struct objcore *oc) |
| 210 |
|
{ |
| 211 |
|
const struct stevedore *stv; |
| 212 |
|
struct object *o; |
| 213 |
|
|
| 214 |
154721 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 215 |
154721 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 216 |
154721 |
stv = oc->stobj->stevedore; |
| 217 |
154721 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 218 |
154721 |
if (stv->sml_getobj != NULL) |
| 219 |
290 |
return (stv->sml_getobj(wrk, oc)); |
| 220 |
154431 |
if (oc->stobj->priv == NULL) |
| 221 |
0 |
return (NULL); |
| 222 |
154431 |
CAST_OBJ_NOTNULL(o, oc->stobj->priv, OBJECT_MAGIC); |
| 223 |
154431 |
return (o); |
| 224 |
154721 |
} |
| 225 |
|
|
| 226 |
|
static void v_matchproto_(objslim_f) |
| 227 |
3199 |
sml_slim(struct worker *wrk, struct objcore *oc) |
| 228 |
|
{ |
| 229 |
|
const struct stevedore *stv; |
| 230 |
|
struct object *o; |
| 231 |
|
struct storage *st, *stn; |
| 232 |
|
|
| 233 |
3199 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 234 |
|
|
| 235 |
3199 |
stv = oc->stobj->stevedore; |
| 236 |
3199 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 237 |
3199 |
o = sml_getobj(wrk, oc); |
| 238 |
3199 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 239 |
|
|
| 240 |
|
#define OBJ_AUXATTR(U, l) \ |
| 241 |
|
do { \ |
| 242 |
|
if (o->aa_##l != NULL) { \ |
| 243 |
|
sml_stv_free(stv, o->aa_##l); \ |
| 244 |
|
o->aa_##l = NULL; \ |
| 245 |
|
} \ |
| 246 |
|
} while (0); |
| 247 |
|
#include "tbl/obj_attr.h" |
| 248 |
|
|
| 249 |
4033 |
VTAILQ_FOREACH_SAFE(st, &o->list, list, stn) { |
| 250 |
834 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 251 |
834 |
VTAILQ_REMOVE(&o->list, st, list); |
| 252 |
834 |
sml_stv_free(stv, st); |
| 253 |
834 |
} |
| 254 |
|
} |
| 255 |
|
|
| 256 |
|
static void |
| 257 |
2859 |
sml_bocfini(const struct stevedore *stv, struct boc *boc) |
| 258 |
|
{ |
| 259 |
|
struct storage *st; |
| 260 |
|
|
| 261 |
2859 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 262 |
2859 |
CHECK_OBJ_NOTNULL(boc, BOC_MAGIC); |
| 263 |
|
|
| 264 |
2859 |
if (boc->stevedore_priv == NULL || |
| 265 |
1879 |
boc->stevedore_priv == trim_once) |
| 266 |
2656 |
return; |
| 267 |
|
|
| 268 |
|
/* Free any leftovers from Trim */ |
| 269 |
203 |
TAKE_OBJ_NOTNULL(st, &boc->stevedore_priv, STORAGE_MAGIC); |
| 270 |
203 |
sml_stv_free(stv, st); |
| 271 |
2859 |
} |
| 272 |
|
|
| 273 |
|
/* |
| 274 |
|
* called in two cases: |
| 275 |
|
* - oc->boc == NULL: cache object on LRU freed |
| 276 |
|
* - oc->boc != NULL: cache object replaced for backend error |
| 277 |
|
*/ |
| 278 |
|
static void v_matchproto_(objfree_f) |
| 279 |
1790 |
sml_objfree(struct worker *wrk, struct objcore *oc) |
| 280 |
|
{ |
| 281 |
|
const struct stevedore *stv; |
| 282 |
|
struct storage *st; |
| 283 |
|
struct object *o; |
| 284 |
|
|
| 285 |
1790 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 286 |
1790 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 287 |
1790 |
stv = oc->stobj->stevedore; |
| 288 |
1790 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 289 |
1790 |
CAST_OBJ_NOTNULL(o, oc->stobj->priv, OBJECT_MAGIC); |
| 290 |
|
|
| 291 |
1790 |
sml_slim(wrk, oc); |
| 292 |
1790 |
st = o->objstore; |
| 293 |
1790 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 294 |
1790 |
FINI_OBJ(o); |
| 295 |
|
|
| 296 |
1790 |
if (oc->boc != NULL) |
| 297 |
21 |
sml_bocfini(stv, oc->boc); |
| 298 |
1769 |
else if (stv->lru != NULL) |
| 299 |
1769 |
LRU_Remove(oc); |
| 300 |
|
|
| 301 |
1790 |
sml_stv_free(stv, st); |
| 302 |
|
|
| 303 |
1790 |
memset(oc->stobj, 0, sizeof oc->stobj); |
| 304 |
|
|
| 305 |
1790 |
wrk->stats->n_object--; |
| 306 |
1790 |
} |
| 307 |
|
|
| 308 |
|
static int v_matchproto_(objiterator_f) |
| 309 |
2404 |
sml_iterator(struct worker *wrk, struct objcore *oc, |
| 310 |
|
void *priv, objiterate_f *func, int final) |
| 311 |
|
{ |
| 312 |
|
struct boc *boc; |
| 313 |
|
enum boc_state_e state; |
| 314 |
|
struct object *obj; |
| 315 |
|
struct storage *st; |
| 316 |
2404 |
struct storage *checkpoint = NULL; |
| 317 |
|
const struct stevedore *stv; |
| 318 |
2404 |
ssize_t checkpoint_len = 0; |
| 319 |
2404 |
ssize_t len = 0; |
| 320 |
2404 |
int ret = 0, ret2; |
| 321 |
|
ssize_t ol; |
| 322 |
|
ssize_t nl; |
| 323 |
|
ssize_t sl; |
| 324 |
|
void *p; |
| 325 |
|
ssize_t l; |
| 326 |
|
unsigned u; |
| 327 |
|
|
| 328 |
2404 |
obj = sml_getobj(wrk, oc); |
| 329 |
2404 |
CHECK_OBJ_NOTNULL(obj, OBJECT_MAGIC); |
| 330 |
2404 |
stv = oc->stobj->stevedore; |
| 331 |
2404 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 332 |
|
|
| 333 |
2404 |
boc = HSH_RefBoc(oc); |
| 334 |
|
|
| 335 |
2404 |
if (boc == NULL) { |
| 336 |
3442 |
VTAILQ_FOREACH_REVERSE_SAFE( |
| 337 |
|
st, &obj->list, storagehead, list, checkpoint) { |
| 338 |
|
|
| 339 |
1824 |
u = 0; |
| 340 |
1824 |
if (VTAILQ_PREV(st, storagehead, list) == NULL) |
| 341 |
1649 |
u |= OBJ_ITER_END; |
| 342 |
1824 |
if (final) |
| 343 |
765 |
u |= OBJ_ITER_FLUSH; |
| 344 |
1824 |
if (ret == 0 && st->len > 0) |
| 345 |
1824 |
ret = func(priv, u, st->ptr, st->len); |
| 346 |
1824 |
if (final) { |
| 347 |
765 |
VTAILQ_REMOVE(&obj->list, st, list); |
| 348 |
765 |
sml_stv_free(stv, st); |
| 349 |
1824 |
} else if (ret) |
| 350 |
32 |
break; |
| 351 |
1792 |
} |
| 352 |
1650 |
return (ret); |
| 353 |
|
} |
| 354 |
|
|
| 355 |
754 |
p = NULL; |
| 356 |
754 |
l = 0; |
| 357 |
|
|
| 358 |
754 |
u = 0; |
| 359 |
754 |
if (boc->fetched_so_far == 0) { |
| 360 |
83 |
ret = func(priv, OBJ_ITER_FLUSH, NULL, 0); |
| 361 |
83 |
if (ret) |
| 362 |
0 |
return (ret); |
| 363 |
83 |
} |
| 364 |
2207 |
while (1) { |
| 365 |
2207 |
ol = len; |
| 366 |
2207 |
nl = ObjWaitExtend(wrk, oc, ol, &state); |
| 367 |
2207 |
if (state == BOS_FAILED) { |
| 368 |
15 |
ret = -1; |
| 369 |
15 |
break; |
| 370 |
|
} |
| 371 |
2192 |
if (nl == ol) { |
| 372 |
721 |
assert(state == BOS_FINISHED); |
| 373 |
721 |
break; |
| 374 |
|
} |
| 375 |
1471 |
assert(nl > ol); |
| 376 |
1471 |
Lck_Lock(&boc->mtx); |
| 377 |
1471 |
AZ(VTAILQ_EMPTY(&obj->list)); |
| 378 |
1471 |
if (checkpoint == NULL) { |
| 379 |
908 |
st = VTAILQ_LAST(&obj->list, storagehead); |
| 380 |
908 |
sl = 0; |
| 381 |
908 |
} else { |
| 382 |
563 |
st = checkpoint; |
| 383 |
563 |
sl = checkpoint_len; |
| 384 |
563 |
ol -= checkpoint_len; |
| 385 |
|
} |
| 386 |
2019 |
while (st != NULL) { |
| 387 |
2019 |
if (st->len > ol) { |
| 388 |
1471 |
p = st->ptr + ol; |
| 389 |
1471 |
l = st->len - ol; |
| 390 |
1471 |
len += l; |
| 391 |
1471 |
break; |
| 392 |
|
} |
| 393 |
548 |
ol -= st->len; |
| 394 |
548 |
assert(ol >= 0); |
| 395 |
548 |
nl -= st->len; |
| 396 |
548 |
assert(nl > 0); |
| 397 |
548 |
sl += st->len; |
| 398 |
548 |
st = VTAILQ_PREV(st, storagehead, list); |
| 399 |
548 |
if (final && checkpoint != NULL) { |
| 400 |
501 |
if (checkpoint == boc->stevedore_priv) |
| 401 |
0 |
boc->stevedore_priv = trim_once; |
| 402 |
|
else |
| 403 |
501 |
VTAILQ_REMOVE(&obj->list, checkpoint, list); |
| 404 |
501 |
sml_stv_free(stv, checkpoint); |
| 405 |
501 |
} |
| 406 |
548 |
checkpoint = st; |
| 407 |
548 |
checkpoint_len = sl; |
| 408 |
|
} |
| 409 |
1471 |
CHECK_OBJ_NOTNULL(obj, OBJECT_MAGIC); |
| 410 |
1471 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 411 |
1471 |
st = VTAILQ_PREV(st, storagehead, list); |
| 412 |
1471 |
if (st != NULL && st->len == 0) |
| 413 |
241 |
st = NULL; |
| 414 |
1471 |
Lck_Unlock(&boc->mtx); |
| 415 |
1471 |
assert(l > 0 || state == BOS_FINISHED); |
| 416 |
1471 |
u = 0; |
| 417 |
1471 |
if (st == NULL || final) |
| 418 |
1451 |
u |= OBJ_ITER_FLUSH; |
| 419 |
1471 |
if (st == NULL && state == BOS_FINISHED) |
| 420 |
8 |
u |= OBJ_ITER_END; |
| 421 |
1471 |
ret = func(priv, u, p, l); |
| 422 |
1471 |
if (ret) |
| 423 |
18 |
break; |
| 424 |
|
} |
| 425 |
754 |
HSH_DerefBoc(wrk, oc); |
| 426 |
754 |
if ((u & OBJ_ITER_END) == 0) { |
| 427 |
746 |
ret2 = func(priv, OBJ_ITER_END, NULL, 0); |
| 428 |
746 |
if (ret == 0) |
| 429 |
713 |
ret = ret2; |
| 430 |
746 |
} |
| 431 |
754 |
return (ret); |
| 432 |
2404 |
} |
| 433 |
|
|
| 434 |
|
/*-------------------------------------------------------------------- |
| 435 |
|
*/ |
| 436 |
|
|
| 437 |
|
static struct storage * |
| 438 |
3184 |
objallocwithnuke(struct worker *wrk, const struct stevedore *stv, ssize_t size, |
| 439 |
|
int flags) |
| 440 |
|
{ |
| 441 |
3184 |
struct storage *st = NULL; |
| 442 |
|
|
| 443 |
3184 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 444 |
3184 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 445 |
|
|
| 446 |
3184 |
if (size > cache_param->fetch_maxchunksize) { |
| 447 |
2 |
if (!(flags & LESS_MEM_ALLOCED_IS_OK)) |
| 448 |
0 |
return (NULL); |
| 449 |
2 |
size = cache_param->fetch_maxchunksize; |
| 450 |
2 |
} |
| 451 |
|
|
| 452 |
3184 |
assert(size <= UINT_MAX); /* field limit in struct storage */ |
| 453 |
|
|
| 454 |
3184 |
do { |
| 455 |
|
/* try to allocate from it */ |
| 456 |
3192 |
st = sml_stv_alloc(stv, size, flags); |
| 457 |
3192 |
if (st != NULL) |
| 458 |
3179 |
break; |
| 459 |
|
|
| 460 |
|
/* no luck; try to free some space and keep trying */ |
| 461 |
13 |
if (stv->lru == NULL) |
| 462 |
0 |
break; |
| 463 |
13 |
} while (LRU_NukeOne(wrk, stv->lru)); |
| 464 |
|
|
| 465 |
3184 |
CHECK_OBJ_ORNULL(st, STORAGE_MAGIC); |
| 466 |
3184 |
return (st); |
| 467 |
3184 |
} |
| 468 |
|
|
| 469 |
|
static int v_matchproto_(objgetspace_f) |
| 470 |
58070 |
sml_getspace(struct worker *wrk, struct objcore *oc, ssize_t *sz, |
| 471 |
|
uint8_t **ptr) |
| 472 |
|
{ |
| 473 |
|
struct object *o; |
| 474 |
|
struct storage *st; |
| 475 |
|
|
| 476 |
58070 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 477 |
58070 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 478 |
58070 |
CHECK_OBJ_NOTNULL(oc->boc, BOC_MAGIC); |
| 479 |
58070 |
AN(sz); |
| 480 |
58070 |
AN(ptr); |
| 481 |
58070 |
if (*sz == 0) |
| 482 |
54417 |
*sz = cache_param->fetch_chunksize; |
| 483 |
58070 |
assert(*sz > 0); |
| 484 |
58070 |
if (oc->boc->transit_buffer > 0) |
| 485 |
486 |
*sz = vmin_t(ssize_t, *sz, oc->boc->transit_buffer); |
| 486 |
|
|
| 487 |
58070 |
o = sml_getobj(wrk, oc); |
| 488 |
58070 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 489 |
58070 |
CHECK_OBJ_NOTNULL(oc->boc, BOC_MAGIC); |
| 490 |
|
|
| 491 |
58070 |
st = VTAILQ_FIRST(&o->list); |
| 492 |
58070 |
if (st != NULL && st->len < st->space) { |
| 493 |
55272 |
*sz = st->space - st->len; |
| 494 |
55272 |
*ptr = st->ptr + st->len; |
| 495 |
55272 |
assert (*sz > 0); |
| 496 |
55272 |
return (1); |
| 497 |
|
} |
| 498 |
|
|
| 499 |
2798 |
st = objallocwithnuke(wrk, oc->stobj->stevedore, *sz, |
| 500 |
|
LESS_MEM_ALLOCED_IS_OK); |
| 501 |
2798 |
if (st == NULL) |
| 502 |
5 |
return (0); |
| 503 |
|
|
| 504 |
2793 |
CHECK_OBJ_NOTNULL(oc->boc, BOC_MAGIC); |
| 505 |
2793 |
Lck_Lock(&oc->boc->mtx); |
| 506 |
2793 |
VTAILQ_INSERT_HEAD(&o->list, st, list); |
| 507 |
2793 |
Lck_Unlock(&oc->boc->mtx); |
| 508 |
|
|
| 509 |
2793 |
*sz = st->space - st->len; |
| 510 |
2793 |
assert (*sz > 0); |
| 511 |
2793 |
*ptr = st->ptr + st->len; |
| 512 |
2793 |
return (1); |
| 513 |
58070 |
} |
| 514 |
|
|
| 515 |
|
static void v_matchproto_(objextend_f) |
| 516 |
56587 |
sml_extend(struct worker *wrk, struct objcore *oc, ssize_t l) |
| 517 |
|
{ |
| 518 |
|
struct object *o; |
| 519 |
|
struct storage *st; |
| 520 |
|
|
| 521 |
56587 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 522 |
56587 |
assert(l > 0); |
| 523 |
|
|
| 524 |
56587 |
o = sml_getobj(wrk, oc); |
| 525 |
56587 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 526 |
56587 |
st = VTAILQ_FIRST(&o->list); |
| 527 |
56587 |
CHECK_OBJ_NOTNULL(st, STORAGE_MAGIC); |
| 528 |
56587 |
assert(st->len + l <= st->space); |
| 529 |
56587 |
st->len += l; |
| 530 |
56587 |
} |
| 531 |
|
|
| 532 |
|
static void v_matchproto_(objtrimstore_f) |
| 533 |
1879 |
sml_trimstore(struct worker *wrk, struct objcore *oc) |
| 534 |
|
{ |
| 535 |
|
const struct stevedore *stv; |
| 536 |
|
struct storage *st, *st1; |
| 537 |
|
struct object *o; |
| 538 |
|
|
| 539 |
1879 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 540 |
1879 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 541 |
1879 |
CHECK_OBJ_NOTNULL(oc->boc, BOC_MAGIC); |
| 542 |
|
|
| 543 |
1879 |
stv = oc->stobj->stevedore; |
| 544 |
1879 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 545 |
|
|
| 546 |
1879 |
if (oc->boc->stevedore_priv != NULL) |
| 547 |
0 |
WRONG("sml_trimstore already called"); |
| 548 |
1879 |
oc->boc->stevedore_priv = trim_once; |
| 549 |
|
|
| 550 |
1879 |
if (stv->sml_free == NULL) |
| 551 |
0 |
return; |
| 552 |
|
|
| 553 |
1879 |
o = sml_getobj(wrk, oc); |
| 554 |
1879 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 555 |
1879 |
st = VTAILQ_FIRST(&o->list); |
| 556 |
|
|
| 557 |
1879 |
if (st == NULL) |
| 558 |
0 |
return; |
| 559 |
|
|
| 560 |
1879 |
if (st->len == 0) { |
| 561 |
8 |
Lck_Lock(&oc->boc->mtx); |
| 562 |
8 |
VTAILQ_REMOVE(&o->list, st, list); |
| 563 |
8 |
Lck_Unlock(&oc->boc->mtx); |
| 564 |
|
/* sml_bocdone frees this */ |
| 565 |
8 |
oc->boc->stevedore_priv = st; |
| 566 |
8 |
return; |
| 567 |
|
} |
| 568 |
|
|
| 569 |
1871 |
if (st->space - st->len < 512) |
| 570 |
1676 |
return; |
| 571 |
|
|
| 572 |
195 |
st1 = sml_stv_alloc(stv, st->len, 0); |
| 573 |
195 |
if (st1 == NULL) |
| 574 |
0 |
return; |
| 575 |
195 |
assert(st1->space >= st->len); |
| 576 |
|
|
| 577 |
195 |
memcpy(st1->ptr, st->ptr, st->len); |
| 578 |
195 |
st1->len = st->len; |
| 579 |
195 |
Lck_Lock(&oc->boc->mtx); |
| 580 |
195 |
VTAILQ_REMOVE(&o->list, st, list); |
| 581 |
195 |
VTAILQ_INSERT_HEAD(&o->list, st1, list); |
| 582 |
195 |
Lck_Unlock(&oc->boc->mtx); |
| 583 |
|
/* sml_bocdone frees this */ |
| 584 |
195 |
oc->boc->stevedore_priv = st; |
| 585 |
1879 |
} |
| 586 |
|
|
| 587 |
|
static void v_matchproto_(objbocdone_f) |
| 588 |
2838 |
sml_bocdone(struct worker *wrk, struct objcore *oc, struct boc *boc) |
| 589 |
|
{ |
| 590 |
|
const struct stevedore *stv; |
| 591 |
|
|
| 592 |
2838 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 593 |
2838 |
CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC); |
| 594 |
2838 |
CHECK_OBJ_NOTNULL(boc, BOC_MAGIC); |
| 595 |
2838 |
stv = oc->stobj->stevedore; |
| 596 |
2838 |
CHECK_OBJ_NOTNULL(stv, STEVEDORE_MAGIC); |
| 597 |
|
|
| 598 |
2838 |
sml_bocfini(stv, boc); |
| 599 |
|
|
| 600 |
2838 |
if (stv->lru != NULL) { |
| 601 |
2799 |
if (isnan(wrk->lastused)) |
| 602 |
0 |
wrk->lastused = VTIM_real(); |
| 603 |
2799 |
LRU_Add(oc, wrk->lastused); // approx timestamp is OK |
| 604 |
2799 |
} |
| 605 |
2838 |
} |
| 606 |
|
|
| 607 |
|
static const void * v_matchproto_(objgetattr_f) |
| 608 |
22031 |
sml_getattr(struct worker *wrk, struct objcore *oc, enum obj_attr attr, |
| 609 |
|
ssize_t *len) |
| 610 |
|
{ |
| 611 |
|
struct object *o; |
| 612 |
|
ssize_t dummy; |
| 613 |
|
|
| 614 |
22031 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 615 |
|
|
| 616 |
22031 |
if (len == NULL) |
| 617 |
13502 |
len = &dummy; |
| 618 |
22031 |
o = sml_getobj(wrk, oc); |
| 619 |
22031 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 620 |
|
|
| 621 |
22031 |
switch (attr) { |
| 622 |
|
/* Fixed size attributes */ |
| 623 |
|
#define OBJ_FIXATTR(U, l, s) \ |
| 624 |
|
case OA_##U: \ |
| 625 |
|
*len = sizeof o->fa_##l; \ |
| 626 |
|
return (o->fa_##l); |
| 627 |
|
#include "tbl/obj_attr.h" |
| 628 |
|
|
| 629 |
|
/* Variable size attributes */ |
| 630 |
|
#define OBJ_VARATTR(U, l) \ |
| 631 |
|
case OA_##U: \ |
| 632 |
|
if (o->va_##l == NULL) \ |
| 633 |
|
return (NULL); \ |
| 634 |
|
*len = o->va_##l##_len; \ |
| 635 |
|
return (o->va_##l); |
| 636 |
|
#include "tbl/obj_attr.h" |
| 637 |
|
|
| 638 |
|
/* Auxiliary attributes */ |
| 639 |
|
#define OBJ_AUXATTR(U, l) \ |
| 640 |
|
case OA_##U: \ |
| 641 |
|
if (o->aa_##l == NULL) \ |
| 642 |
|
return (NULL); \ |
| 643 |
|
CHECK_OBJ_NOTNULL(o->aa_##l, STORAGE_MAGIC); \ |
| 644 |
|
*len = o->aa_##l->len; \ |
| 645 |
|
return (o->aa_##l->ptr); |
| 646 |
|
#include "tbl/obj_attr.h" |
| 647 |
|
|
| 648 |
|
default: |
| 649 |
|
break; |
| 650 |
|
} |
| 651 |
0 |
WRONG("Unsupported OBJ_ATTR"); |
| 652 |
22031 |
} |
| 653 |
|
|
| 654 |
|
static void * v_matchproto_(objsetattr_f) |
| 655 |
10576 |
sml_setattr(struct worker *wrk, struct objcore *oc, enum obj_attr attr, |
| 656 |
|
ssize_t len, const void *ptr) |
| 657 |
|
{ |
| 658 |
|
struct object *o; |
| 659 |
10576 |
void *retval = NULL; |
| 660 |
|
struct storage *st; |
| 661 |
|
|
| 662 |
10576 |
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC); |
| 663 |
|
|
| 664 |
10576 |
o = sml_getobj(wrk, oc); |
| 665 |
10576 |
CHECK_OBJ_NOTNULL(o, OBJECT_MAGIC); |
| 666 |
10576 |
st = o->objstore; |
| 667 |
|
|
| 668 |
10576 |
switch (attr) { |
| 669 |
|
/* Fixed size attributes */ |
| 670 |
|
#define OBJ_FIXATTR(U, l, s) \ |
| 671 |
|
case OA_##U: \ |
| 672 |
|
assert(len == sizeof o->fa_##l); \ |
| 673 |
|
retval = o->fa_##l; \ |
| 674 |
|
break; |
| 675 |
|
#include "tbl/obj_attr.h" |
| 676 |
|
|
| 677 |
|
/* Variable size attributes */ |
| 678 |
|
#define OBJ_VARATTR(U, l) \ |
| 679 |
|
case OA_##U: \ |
| 680 |
|
if (o->va_##l##_len > 0) { \ |
| 681 |
|
AN(o->va_##l); \ |
| 682 |
|
assert(len == o->va_##l##_len); \ |
| 683 |
|
retval = o->va_##l; \ |
| 684 |
|
} else if (len > 0) { \ |
| 685 |
|
assert(len <= UINT_MAX); \ |
| 686 |
|
assert(st->len + len <= st->space); \ |
| 687 |
|
o->va_##l = st->ptr + st->len; \ |
| 688 |
|
st->len += len; \ |
| 689 |
|
o->va_##l##_len = len; \ |
| 690 |
|
retval = o->va_##l; \ |
| 691 |
|
} \ |
| 692 |
|
break; |
| 693 |
|
#include "tbl/obj_attr.h" |
| 694 |
|
|
| 695 |
|
/* Auxiliary attributes */ |
| 696 |
|
#define OBJ_AUXATTR(U, l) \ |
| 697 |
|
case OA_##U: \ |
| 698 |
|
if (o->aa_##l != NULL) { \ |
| 699 |
|
CHECK_OBJ_NOTNULL(o->aa_##l, STORAGE_MAGIC); \ |
| 700 |
|
assert(len == o->aa_##l->len); \ |
| 701 |
|
retval = o->aa_##l->ptr; \ |
| 702 |
|
break; \ |
| 703 |
|
} \ |
| 704 |
|
if (len == 0) \ |
| 705 |
|
break; \ |
| 706 |
|
o->aa_##l = objallocwithnuke(wrk, oc->stobj->stevedore, \ |
| 707 |
|
len, 0); \ |
| 708 |
|
if (o->aa_##l == NULL) \ |
| 709 |
|
break; \ |
| 710 |
|
CHECK_OBJ_NOTNULL(o->aa_##l, STORAGE_MAGIC); \ |
| 711 |
|
assert(len <= o->aa_##l->space); \ |
| 712 |
|
o->aa_##l->len = len; \ |
| 713 |
|
retval = o->aa_##l->ptr; \ |
| 714 |
|
break; |
| 715 |
|
#include "tbl/obj_attr.h" |
| 716 |
|
|
| 717 |
|
default: |
| 718 |
0 |
WRONG("Unsupported OBJ_ATTR"); |
| 719 |
|
break; |
| 720 |
|
} |
| 721 |
|
|
| 722 |
10576 |
if (retval != NULL && ptr != NULL) |
| 723 |
376 |
memcpy(retval, ptr, len); |
| 724 |
10576 |
return (retval); |
| 725 |
|
} |
| 726 |
|
|
| 727 |
|
const struct obj_methods SML_methods = { |
| 728 |
|
.objfree = sml_objfree, |
| 729 |
|
.objiterator = sml_iterator, |
| 730 |
|
.objgetspace = sml_getspace, |
| 731 |
|
.objextend = sml_extend, |
| 732 |
|
.objtrimstore = sml_trimstore, |
| 733 |
|
.objbocdone = sml_bocdone, |
| 734 |
|
.objslim = sml_slim, |
| 735 |
|
.objgetattr = sml_getattr, |
| 736 |
|
.objsetattr = sml_setattr, |
| 737 |
|
.objtouch = LRU_Touch, |
| 738 |
|
}; |
| 739 |
|
|
| 740 |
|
static void |
| 741 |
3 |
sml_panic_st(struct vsb *vsb, const char *hd, const struct storage *st) |
| 742 |
|
{ |
| 743 |
6 |
VSB_printf(vsb, "%s = %p {priv=%p, ptr=%p, len=%u, space=%u},\n", |
| 744 |
3 |
hd, st, st->priv, st->ptr, st->len, st->space); |
| 745 |
3 |
} |
| 746 |
|
|
| 747 |
|
void |
| 748 |
2 |
SML_panic(struct vsb *vsb, const struct objcore *oc) |
| 749 |
|
{ |
| 750 |
|
struct object *o; |
| 751 |
|
struct storage *st; |
| 752 |
|
|
| 753 |
2 |
VSB_printf(vsb, "Simple = %p,\n", oc->stobj->priv); |
| 754 |
2 |
if (oc->stobj->priv == NULL) |
| 755 |
0 |
return; |
| 756 |
2 |
o = oc->stobj->priv; |
| 757 |
2 |
PAN_CheckMagic(vsb, o, OBJECT_MAGIC); |
| 758 |
2 |
sml_panic_st(vsb, "Obj", o->objstore); |
| 759 |
|
|
| 760 |
|
#define OBJ_FIXATTR(U, l, sz) \ |
| 761 |
|
VSB_printf(vsb, "%s = ", #U); \ |
| 762 |
|
VSB_quote(vsb, (const void*)o->fa_##l, sz, VSB_QUOTE_HEX); \ |
| 763 |
|
VSB_printf(vsb, ",\n"); |
| 764 |
|
|
| 765 |
|
#define OBJ_VARATTR(U, l) \ |
| 766 |
|
VSB_printf(vsb, "%s = {len=%u, ptr=%p},\n", \ |
| 767 |
|
#U, o->va_##l##_len, o->va_##l); |
| 768 |
|
|
| 769 |
|
#define OBJ_AUXATTR(U, l) \ |
| 770 |
|
do { \ |
| 771 |
|
if (o->aa_##l != NULL) sml_panic_st(vsb, #U, o->aa_##l);\ |
| 772 |
|
} while(0); |
| 773 |
|
|
| 774 |
|
#include "tbl/obj_attr.h" |
| 775 |
|
|
| 776 |
3 |
VTAILQ_FOREACH(st, &o->list, list) { |
| 777 |
1 |
sml_panic_st(vsb, "Body", st); |
| 778 |
1 |
} |
| 779 |
|
} |