diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/experimental/cache_cache.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/modules/experimental/cache_cache.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/experimental/cache_cache.c b/rubbos/app/httpd-2.0.64/modules/experimental/cache_cache.c deleted file mode 100644 index 6db98f71..00000000 --- a/rubbos/app/httpd-2.0.64/modules/experimental/cache_cache.c +++ /dev/null @@ -1,171 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "apr_general.h" - -#include "mod_cache.h" -#include "cache_hash.h" -#include "cache_pqueue.h" -#include "cache_cache.h" - -#if APR_HAVE_STDLIB_H -#include <stdlib.h> -#endif -#if APR_HAVE_STRING_H -#include <string.h> -#endif - -struct cache_cache_t { - int max_entries; - apr_size_t max_size; - apr_size_t current_size; - int total_purges; - long queue_clock; - cache_hash_t *ht; - cache_pqueue_t *pq; - cache_pqueue_set_priority set_pri; - cache_pqueue_get_priority get_pri; - cache_cache_inc_frequency *inc_entry; - cache_cache_get_size *size_entry; - cache_cache_get_key *key_entry; - cache_cache_free *free_entry; -}; - -CACHE_DECLARE(cache_cache_t *)cache_init(int max_entries, - apr_size_t max_size, - cache_pqueue_get_priority get_pri, - cache_pqueue_set_priority set_pri, - cache_pqueue_getpos get_pos, - cache_pqueue_setpos set_pos, - cache_cache_inc_frequency *inc_entry, - cache_cache_get_size *size_entry, - cache_cache_get_key* key_entry, - cache_cache_free *free_entry) -{ - cache_cache_t *tmp; - tmp = malloc(sizeof(cache_cache_t)); - tmp->max_entries = max_entries; - tmp->max_size = max_size; - tmp->current_size = 0; - tmp->total_purges = 0; - tmp->queue_clock = 0; - tmp->get_pri = get_pri; - tmp->set_pri = set_pri; - tmp->inc_entry = inc_entry; - tmp->size_entry = size_entry; - tmp->key_entry = key_entry; - tmp->free_entry = free_entry; - - tmp->ht = cache_hash_make(max_entries); - tmp->pq = cache_pq_init(max_entries, get_pri, get_pos, set_pos); - - return tmp; -} - -CACHE_DECLARE(void) cache_free(cache_cache_t *c) -{ - cache_pq_free(c->pq); - cache_hash_free(c->ht); - free(c); -} - - -CACHE_DECLARE(void*) cache_find(cache_cache_t* c, const char *key) -{ - void *e; - - e = cache_hash_get(c->ht, key, CACHE_HASH_KEY_STRING); - if (!e) - return NULL; - - return e; -} - -CACHE_DECLARE(void) cache_update(cache_cache_t* c, void *entry) -{ - long old_priority; - long new_priority; - - old_priority = c->set_pri(c->queue_clock, entry); - c->inc_entry(entry); - new_priority = c->set_pri(c->queue_clock, entry); - cache_pq_change_priority(c->pq, old_priority, new_priority, entry); -} - -CACHE_DECLARE(void) cache_insert(cache_cache_t* c, void *entry) -{ - void *ejected = NULL; - long priority; - - c->set_pri(c->queue_clock, entry); - /* FIX: check if priority of bottom item is greater than inserted one */ - while ((cache_pq_size(c->pq) >= c->max_entries) || - ((c->current_size + c->size_entry(entry)) > c->max_size)) { - - ejected = cache_pq_pop(c->pq); - /* FIX: If ejected is NULL, we'll segfault here */ - priority = c->get_pri(ejected); - - if (c->queue_clock > priority) - c->queue_clock = priority; - - cache_hash_set(c->ht, - c->key_entry(ejected), - CACHE_HASH_KEY_STRING, - NULL); - - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, NULL, "Cache Purge of %s",c->key_entry(ejected)); - c->current_size -= c->size_entry(ejected); - c->free_entry(ejected); - c->total_purges++; - } - c->current_size += c->size_entry(entry); - - cache_pq_insert(c->pq, entry); - cache_hash_set(c->ht, c->key_entry(entry), CACHE_HASH_KEY_STRING, entry); -} - -CACHE_DECLARE(void *) cache_pop(cache_cache_t *c) -{ - void *entry; - - if (!c) - return NULL; - - entry = cache_pq_pop(c->pq); - - if (!entry) - return NULL; - - c->current_size -= c->size_entry(entry); - cache_hash_set(c->ht, c->key_entry(entry), CACHE_HASH_KEY_STRING, NULL); - - return entry; -} - -CACHE_DECLARE(apr_status_t) cache_remove(cache_cache_t *c, void *entry) -{ - apr_size_t entry_size = c->size_entry(entry); - apr_status_t rc; - rc = cache_pq_remove(c->pq, entry); - if (rc != APR_SUCCESS) - return rc; - - cache_hash_set(c->ht, c->key_entry(entry), CACHE_HASH_KEY_STRING, NULL); - c->current_size -= entry_size; - - return APR_SUCCESS; -} |