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a9f530e317
Revert the read-while-caching and large-file-crash fixes for mod_disk_cache, ready to start again. Reverted: r450105 r450188 r462571 r462601 r462696 r467655 r467684 r468044 r468373 r468409 r470455 git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@502365 13f79535-47bb-0310-9956-ffa450edef68
96 lines
3.5 KiB
C
96 lines
3.5 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MOD_DISK_CACHE_H
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#define MOD_DISK_CACHE_H
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/*
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* include for mod_disk_cache: Disk Based HTTP 1.1 Cache.
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*/
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#define VARY_FORMAT_VERSION 3
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#define DISK_FORMAT_VERSION 4
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#define CACHE_HEADER_SUFFIX ".header"
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#define CACHE_DATA_SUFFIX ".data"
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#define CACHE_VDIR_SUFFIX ".vary"
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#define AP_TEMPFILE_PREFIX "/"
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#define AP_TEMPFILE_BASE "aptmp"
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#define AP_TEMPFILE_SUFFIX "XXXXXX"
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#define AP_TEMPFILE_BASELEN strlen(AP_TEMPFILE_BASE)
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#define AP_TEMPFILE_NAMELEN strlen(AP_TEMPFILE_BASE AP_TEMPFILE_SUFFIX)
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#define AP_TEMPFILE AP_TEMPFILE_PREFIX AP_TEMPFILE_BASE AP_TEMPFILE_SUFFIX
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typedef struct {
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/* Indicates the format of the header struct stored on-disk. */
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apr_uint32_t format;
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/* The HTTP status code returned for this response. */
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int status;
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/* The size of the entity name that follows. */
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apr_size_t name_len;
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/* The number of times we've cached this entity. */
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apr_size_t entity_version;
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/* Miscellaneous time values. */
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apr_time_t date;
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apr_time_t expire;
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apr_time_t request_time;
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apr_time_t response_time;
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} disk_cache_info_t;
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/*
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* disk_cache_object_t
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* Pointed to by cache_object_t::vobj
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*/
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typedef struct disk_cache_object {
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const char *root; /* the location of the cache directory */
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apr_size_t root_len;
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char *tempfile; /* temp file tohold the content */
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const char *prefix;
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const char *datafile; /* name of file where the data will go */
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const char *hdrsfile; /* name of file where the hdrs will go */
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const char *hashfile; /* Computed hash key for this URI */
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const char *name; /* Requested URI without vary bits - suitable for mortals. */
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const char *key; /* On-disk prefix; URI with Vary bits (if present) */
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apr_file_t *fd; /* data file */
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apr_file_t *hfd; /* headers file */
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apr_file_t *tfd; /* temporary file for data */
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apr_off_t file_size; /* File size of the cached data file */
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disk_cache_info_t disk_info; /* Header information. */
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} disk_cache_object_t;
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/*
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* mod_disk_cache configuration
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*/
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/* TODO: Make defaults OS specific */
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#define CACHEFILE_LEN 20 /* must be less than HASH_LEN/2 */
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#define DEFAULT_DIRLEVELS 2
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#define DEFAULT_DIRLENGTH 2
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#define DEFAULT_MIN_FILE_SIZE 1
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#define DEFAULT_MAX_FILE_SIZE 1000000
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typedef struct {
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const char* cache_root;
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apr_size_t cache_root_len;
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int dirlevels; /* Number of levels of subdirectories */
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int dirlength; /* Length of subdirectory names */
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apr_off_t minfs; /* minimum file size for cached files */
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apr_off_t maxfs; /* maximum file size for cached files */
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} disk_cache_conf;
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#endif /*MOD_DISK_CACHE_H*/
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