projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*- |
| 2 | * BSD LICENSE | |
| 3 | * | |
| 4 | * Copyright(c) 2015 Intel Corporation. All rights reserved. | |
| 5 | * All rights reserved. | |
| 6 | * | |
| 7 | * Redistribution and use in source and binary forms, with or without | |
| 8 | * modification, are permitted provided that the following conditions | |
| 9 | * are met: | |
| 10 | * | |
| 11 | * * Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * * Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in | |
| 15 | * the documentation and/or other materials provided with the | |
| 16 | * distribution. | |
| 17 | * * Neither the name of Intel Corporation nor the names of its | |
| 18 | * contributors may be used to endorse or promote products derived | |
| 19 | * from this software without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 32 | */ | |
| 33 | #ifndef LTHREAD_OBJCACHE_H_ | |
| 34 | #define LTHREAD_OBJCACHE_H_ | |
| 35 | ||
| 36 | #include <string.h> | |
| 37 | ||
| 38 | #include <rte_per_lcore.h> | |
| 39 | #include <rte_malloc.h> | |
| 40 | #include <rte_memory.h> | |
| 41 | ||
| 42 | #include "lthread_int.h" | |
| 43 | #include "lthread_diag.h" | |
| 44 | #include "lthread_queue.h" | |
| 45 | ||
| 46 | ||
| 47 | RTE_DECLARE_PER_LCORE(struct lthread_sched *, this_sched); | |
| 48 | ||
| 49 | struct lthread_objcache { | |
| 50 | struct lthread_queue *q; | |
| 51 | size_t obj_size; | |
| 52 | int prealloc_size; | |
| 53 | char name[LT_MAX_NAME_SIZE]; | |
| 54 | ||
| 55 | DIAG_COUNT_DEFINE(rd); | |
| 56 | DIAG_COUNT_DEFINE(wr); | |
| 57 | DIAG_COUNT_DEFINE(prealloc); | |
| 58 | DIAG_COUNT_DEFINE(capacity); | |
| 59 | DIAG_COUNT_DEFINE(available); | |
| 60 | }; | |
| 61 | ||
| 62 | /* | |
| 63 | * Create a cache | |
| 64 | */ | |
| 65 | static inline struct | |
| 66 | lthread_objcache *_lthread_objcache_create(const char *name, | |
| 67 | size_t obj_size, | |
| 68 | int prealloc_size) | |
| 69 | { | |
| 70 | struct lthread_objcache *c = | |
| 71 | rte_malloc_socket(NULL, sizeof(struct lthread_objcache), | |
| 72 | RTE_CACHE_LINE_SIZE, | |
| 73 | rte_socket_id()); | |
| 74 | if (c == NULL) | |
| 75 | return NULL; | |
| 76 | ||
| 77 | c->q = _lthread_queue_create("cache queue"); | |
| 78 | if (c->q == NULL) { | |
| 79 | rte_free(c); | |
| 80 | return NULL; | |
| 81 | } | |
| 82 | c->obj_size = obj_size; | |
| 83 | c->prealloc_size = prealloc_size; | |
| 84 | ||
| 85 | if (name != NULL) | |
| 86 | strncpy(c->name, name, LT_MAX_NAME_SIZE); | |
| 87 | c->name[sizeof(c->name)-1] = 0; | |
| 88 | ||
| 89 | DIAG_COUNT_INIT(c, rd); | |
| 90 | DIAG_COUNT_INIT(c, wr); | |
| 91 | DIAG_COUNT_INIT(c, prealloc); | |
| 92 | DIAG_COUNT_INIT(c, capacity); | |
| 93 | DIAG_COUNT_INIT(c, available); | |
| 94 | return c; | |
| 95 | } | |
| 96 | ||
| 97 | /* | |
| 98 | * Destroy an objcache | |
| 99 | */ | |
| 100 | static inline int | |
| 101 | _lthread_objcache_destroy(struct lthread_objcache *c) | |
| 102 | { | |
| 103 | if (_lthread_queue_destroy(c->q) == 0) { | |
| 104 | rte_free(c); | |
| 105 | return 0; | |
| 106 | } | |
| 107 | return -1; | |
| 108 | } | |
| 109 | ||
| 110 | /* | |
| 111 | * Allocate an object from an object cache | |
| 112 | */ | |
| 113 | static inline void * | |
| 114 | _lthread_objcache_alloc(struct lthread_objcache *c) | |
| 115 | { | |
| 116 | int i; | |
| 117 | void *data; | |
| 118 | struct lthread_queue *q = c->q; | |
| 119 | size_t obj_size = c->obj_size; | |
| 120 | int prealloc_size = c->prealloc_size; | |
| 121 | ||
| 122 | data = _lthread_queue_remove(q); | |
| 123 | ||
| 124 | if (data == NULL) { | |
| 125 | DIAG_COUNT_INC(c, prealloc); | |
| 126 | for (i = 0; i < prealloc_size; i++) { | |
| 127 | data = | |
| 128 | rte_zmalloc_socket(NULL, obj_size, | |
| 129 | RTE_CACHE_LINE_SIZE, | |
| 130 | rte_socket_id()); | |
| 131 | if (data == NULL) | |
| 132 | return NULL; | |
| 133 | ||
| 134 | DIAG_COUNT_INC(c, available); | |
| 135 | DIAG_COUNT_INC(c, capacity); | |
| 136 | _lthread_queue_insert_mp(q, data); | |
| 137 | } | |
| 138 | data = _lthread_queue_remove(q); | |
| 139 | } | |
| 140 | DIAG_COUNT_INC(c, rd); | |
| 141 | DIAG_COUNT_DEC(c, available); | |
| 142 | return data; | |
| 143 | } | |
| 144 | ||
| 145 | /* | |
| 146 | * free an object to a cache | |
| 147 | */ | |
| 148 | static inline void | |
| 149 | _lthread_objcache_free(struct lthread_objcache *c, void *obj) | |
| 150 | { | |
| 151 | DIAG_COUNT_INC(c, wr); | |
| 152 | DIAG_COUNT_INC(c, available); | |
| 153 | _lthread_queue_insert_mp(c->q, obj); | |
| 154 | } | |
| 155 | ||
| 156 | ||
| 157 | ||
| 158 | #endif /* LTHREAD_OBJCACHE_H_ */ |