mirror of
https://gitee.com/ShopeX/OMS
synced 2026-03-23 19:05:34 +08:00
679 lines
21 KiB
PHP
679 lines
21 KiB
PHP
<?php
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/**
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* Copyright 2012-2026 ShopeX (https://www.shopex.cn)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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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/**
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* fcache
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* 最大bs 16m
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* 最多16个类型
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*
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* @package
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* @version $Id: secache.php 34670 2009-10-28 10:42:14Z ever $
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* @copyright 2003-2007 ShopEx
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* @author Wanglei <flaboy@shopex.cn>
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* @license Commercial
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* [20][20][384][16*16*16*4]
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*/
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if(!defined('SECACHE_SIZE')){
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define('SECACHE_SIZE','100M');
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}
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class base_cache_secache_model extends base_cache_abstract
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{
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var $idx_node_size = 40;
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var $data_core_pos = 262588; //40+20+24*16+16*16*16*16*4;
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var $schema_item_size = 24;
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var $header_padding = 20; //保留空间 放置php标记防止下载
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var $info_size = 20; //保留空间 4+16 maxsize|ver
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//40起 添加20字节保留区域
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var $idx_seq_pos = 40; //id 计数器节点地址
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var $dfile_cur_pos = 44; //id 计数器节点地址
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var $idx_free_pos = 48; //id 空闲链表入口地址
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var $idx_core_pos = 444; //40+20+24*16
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var $min_size = 10240; //10M最小值
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var $schema_struct = array('size','free','lru_head','lru_tail','hits','miss');
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var $ver = '$Rev: 34670 $';
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var $name = 'secache';
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function workat($file){
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$this->_file = $file.'.php';
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$this->_bsize_list = array(
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512=>10,
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3<<10=>10,
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8<<10=>10,
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20<<10=>4,
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30<<10=>2,
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50<<10=>2,
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80<<10=>2,
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96<<10=>2,
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128<<10=>2,
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224<<10=>2,
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256<<10=>2,
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512<<10=>1,
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1024<<10=>1,
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);
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$this->_node_struct = array(
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'next'=>array(0,'V'),
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'prev'=>array(4,'V'),
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'data'=>array(8,'V'),
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'size'=>array(12,'V'),
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'lru_right'=>array(16,'V'),
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'lru_left'=>array(20,'V'),
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'key'=>array(24,'H*'),
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);
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if(!file_exists($this->_file)){
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$this->create();
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}else{
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$this->_rs = fopen($this->_file,'rb+') or $this->trigger_error('Can\'t open the cachefile: '.realpath($this->_file),E_USER_ERROR);
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$this->_seek($this->header_padding);
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if (version_compare(phpversion(), '5.5', '>=')){
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$unpack_key = 'V1max_size/Z*ver';
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}else{
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$unpack_key = 'V1max_size/a*ver';
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}
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$info = unpack($unpack_key,fread($this->_rs,$this->info_size));
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if($info['ver']!=$this->ver){
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$this->_format(true);
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}else{
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$this->max_size = $info['max_size'];
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}
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}
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$this->idx_node_base = $this->data_core_pos+$this->max_size;
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$this->_block_size_list = array_keys($this->_bsize_list);
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sort($this->_block_size_list);
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return true;
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}
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function create(){
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$this->_rs = fopen($this->_file,'wb+') or $this->trigger_error('Can\'t open the cachefile: '.realpath($this->_file),E_USER_ERROR);;
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if(!is_writable($this->_file) || !is_readable($this->_file)){
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chmod($this->_file,0666);
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}
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fseek($this->_rs,0);
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fputs($this->_rs,'<'.'?php exit()?'.'>');
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return $this->_format();
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}
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function _puts($offset,$data){
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if($offset < $this->max_size*1.5){
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$this->_seek($offset);
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return fputs($this->_rs,$data);
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}else{
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$this->trigger_error('Offset over quota:'.$offset,E_USER_ERROR);
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}
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}
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function _seek($offset){
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return fseek($this->_rs,$offset);
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}
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function clear(){
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return $this->_format(true);
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}
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function fetch($key,&$return){
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if($this->lock(false)){
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$locked = true;
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}
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if($this->search($key,$offset)){
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$info = $this->_get_node($offset);
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$schema_id = $this->_get_size_schema_id($info['size']);
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if($schema_id===false){
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if($locked) $this->unlock();
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return false;
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}
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$this->_seek($info['data']);
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$data = fread($this->_rs,$info['size']);
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$return = unserialize($data);
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if($return===false){
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if($locked) $this->unlock();
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return false;
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}
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if($locked){
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$this->_lru_push($schema_id,$info['offset']);
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$this->_set_schema($schema_id,'hits',$this->_get_schema($schema_id,'hits')+1);
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return $this->unlock();
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}else{
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return true;
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}
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}else{
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if($locked) $this->unlock();
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return false;
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}
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}
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/**
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* lock
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* 如果flock不管用，请继承本类，并重载此方法
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*
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* @param mixed $is_block 是否阻塞
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* @access public
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* @return void
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*/
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function lock($is_block,$whatever=false){
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ignore_user_abort(true);
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return flock($this->_rs, $is_block?LOCK_EX:LOCK_EX+LOCK_NB);
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}
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/**
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* unlock
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* 如果flock不管用，请继承本类，并重载此方法
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*
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* @access public
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* @return void
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*/
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function unlock(){
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ignore_user_abort(false);
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return flock($this->_rs, LOCK_UN);
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}
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function delete($key,$pos=false){
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if($pos || $this->search($key,$pos)){
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if($info = $this->_get_node($pos)){
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//删除data区域
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if($info['prev']){
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$this->_set_node($info['prev'],'next',$info['next']);
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$this->_set_node($info['next'],'prev',$info['prev']);
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}else{ //改入口位置
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$this->_set_node($info['next'],'prev',0);
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$this->_set_node_root($key,$info['next']);
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}
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$this->_free_dspace($info['size'],$info['data']);
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$this->_lru_delete($info);
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$this->_free_node($pos);
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return $info['prev'];
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}
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}
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return false;
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}
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function store($key,$value){
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if($this->lock(true)){
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//save data
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$data = serialize($value);
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$size = strlen($data);
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//get list_idx
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$has_key = $this->search($key,$list_idx_offset);
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$schema_id = $this->_get_size_schema_id($size);
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if($schema_id===false){
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$this->unlock();
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return false;
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}
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if($has_key){
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$hdseq = $list_idx_offset;
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$info = $this->_get_node($hdseq);
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if($schema_id == $this->_get_size_schema_id($info['size'])){
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$dataoffset = $info['data'];
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}else{
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//破掉原有lru
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$this->_lru_delete($info);
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if(!($dataoffset = $this->_dalloc($schema_id))){
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$this->unlock();
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return false;
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}
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$this->_free_dspace($info['size'],$info['data']);
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$this->_set_node($hdseq,'lru_left',0);
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$this->_set_node($hdseq,'lru_right',0);
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}
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$this->_set_node($hdseq,'size',$size);
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$this->_set_node($hdseq,'data',$dataoffset);
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}else{
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if(!($dataoffset = $this->_dalloc($schema_id))){
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$this->unlock();
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return false;
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}
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$hdseq = $this->_alloc_idx(array(
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'next'=>0,
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'prev'=>$list_idx_offset,
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'data'=>$dataoffset,
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'size'=>$size,
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'lru_right'=>0,
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'lru_left'=>0,
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'key'=>$key,
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));
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if($list_idx_offset>0){
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$this->_set_node($list_idx_offset,'next',$hdseq);
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}else{
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$this->_set_node_root($key,$hdseq);
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}
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}
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if($dataoffset>$this->max_size){
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$this->trigger_error('alloc datasize:'.$dataoffset,E_USER_WARNING);
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return false;
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}
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$this->_puts($dataoffset,$data);
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$this->_set_schema($schema_id,'miss',$this->_get_schema($schema_id,'miss')+1);
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$this->_lru_push($schema_id,$hdseq);
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$this->unlock();
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return true;
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}else{
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$this->trigger_error("Couldn't lock the file !",E_USER_WARNING);
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return false;
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}
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}
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/**
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* search
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* 查找指定的key
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* 如果找到节点则$pos=节点本身 返回true
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* 否则 $pos=树的末端 返回false
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*
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* @param mixed $key
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* @access public
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* @return void
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*/
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function search($key,&$pos){
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return $this->_get_pos_by_key($this->_get_node_root($key),$key,$pos);
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}
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function _get_size_schema_id($size){
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foreach($this->_block_size_list as $k=>$block_size){
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if($size <= $block_size){
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return $k;
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}
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}
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return false;
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}
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function _parse_str_size($str_size,$default){
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if(preg_match('/^([0-9]+)\s*([gmk]|)$/i',$str_size,$match)){
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switch(strtolower($match[2])){
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case 'g':
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if($match[1]>1){
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$this->trigger_error('Max cache size 1G',E_USER_ERROR);
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}
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$size = $match[1]<<30;
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break;
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case 'm':
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$size = $match[1]<<20;
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break;
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case 'k':
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$size = $match[1]<<10;
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break;
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default:
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$size = $match[1];
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}
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if($size<=0){
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$this->trigger_error('Error cache size '.$this->max_size,E_USER_ERROR);
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return false;
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}elseif($size<10485760){
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return 10485760;
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}else{
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return $size;
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}
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}else{
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return $default;
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}
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}
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function _format($truncate=false){
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if($this->lock(true,true)){
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if($truncate){
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$this->_seek(0);
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ftruncate($this->_rs,$this->idx_node_base);
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}
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$this->max_size = $this->_parse_str_size(SECACHE_SIZE,15728640);
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if (version_compare(phpversion(), '5.5', '>=')){
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$pack_key = 'V1Z*';
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}else{
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$pack_key = 'V1a*';
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}
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$this->_puts($this->header_padding,pack($pack_key,$this->max_size,$this->ver));
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ksort($this->_bsize_list);
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$ds_offset = $this->data_core_pos;
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$i=0;
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foreach($this->_bsize_list as $size=>$count){
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//将预分配的空间注册到free链表里
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$count *= min(3,floor($this->max_size/10485760));
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$next_free_node = 0;
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for($j=0;$j<$count;$j++){
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$this->_puts($ds_offset,pack('V',$next_free_node));
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$next_free_node = $ds_offset;
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$ds_offset+=intval($size);
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}
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$code = pack(str_repeat('V1',count($this->schema_struct)),$size,$next_free_node,0,0,0,0);
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$this->_puts(60+$i*$this->schema_item_size,$code);
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$i++;
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}
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$this->_set_dcur_pos($ds_offset);
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$this->_puts($this->idx_core_pos,str_repeat("\0",262144));
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$this->_puts($this->idx_seq_pos,pack('V',1));
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$this->unlock();
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return true;
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}else{
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$this->trigger_error("Couldn't lock the file !",E_USER_ERROR);
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return false;
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}
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}
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function _get_node_root($key){
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$this->_seek(hexdec(substr($key,0,4))*4+$this->idx_core_pos);
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$a= fread($this->_rs,4);
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list(,$offset) = unpack('V',$a);
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return $offset;
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}
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function _set_node_root($key,$value){
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return $this->_puts(hexdec(substr($key,0,4))*4+$this->idx_core_pos,pack('V',$value));
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}
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function _set_node($pos,$key,$value){
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if(!$pos){
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return false;
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}
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if(isset($this->_node_struct[$key])){
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return $this->_puts($pos*$this->idx_node_size+$this->idx_node_base+$this->_node_struct[$key][0],pack($this->_node_struct[$key][1],$value));
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}else{
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return false;
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}
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}
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function _get_pos_by_key($offset,$key,&$pos){
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if(!$offset){
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$pos = 0;
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return false;
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}
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$info = $this->_get_node($offset);
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if($info['key']==$key){
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$pos = $info['offset'];
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return true;
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}elseif($info['next'] && $info['next']!=$offset){
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return $this->_get_pos_by_key($info['next'],$key,$pos);
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}else{
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$pos = $offset;
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return false;
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}
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}
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function _lru_delete($info){
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if($info['lru_right']){
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$this->_set_node($info['lru_right'],'lru_left',$info['lru_left']);
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}else{
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$this->_set_schema($this->_get_size_schema_id($info['size']),'lru_tail',$info['lru_left']);
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}
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if($info['lru_left']){
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$this->_set_node($info['lru_left'],'lru_right',$info['lru_right']);
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}else{
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$this->_set_schema($this->_get_size_schema_id($info['size']),'lru_head',$info['lru_right']);
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}
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return true;
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}
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function _lru_push($schema_id,$offset){
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$lru_head = $this->_get_schema($schema_id,'lru_head');
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$lru_tail = $this->_get_schema($schema_id,'lru_tail');
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if((!$offset) || ($lru_head==$offset))return;
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$info = $this->_get_node($offset);
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$this->_set_node($info['lru_right'],'lru_left',$info['lru_left']);
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$this->_set_node($info['lru_left'],'lru_right',$info['lru_right']);
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$this->_set_node($offset,'lru_right',$lru_head);
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$this->_set_node($offset,'lru_left',0);
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$this->_set_node($lru_head,'lru_left',$offset);
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$this->_set_schema($schema_id,'lru_head',$offset);
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if($lru_tail==0){
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$this->_set_schema($schema_id,'lru_tail',$offset);
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}elseif($lru_tail==$offset && $info['lru_left']){
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$this->_set_schema($schema_id,'lru_tail',$info['lru_left']);
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}
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return true;
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}
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function _get_node($offset){
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$this->_seek($offset*$this->idx_node_size + $this->idx_node_base);
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$info = unpack('V1next/V1prev/V1data/V1size/V1lru_right/V1lru_left/H*key',fread($this->_rs,$this->idx_node_size));
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$info['offset'] = $offset;
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return $info;
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}
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function _lru_pop($schema_id){
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if($node = $this->_get_schema($schema_id,'lru_tail')){
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$info = $this->_get_node($node);
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if(!$info['data']){
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return false;
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}
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$this->delete($info['key'],$info['offset']);
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if(!$this->_get_schema($schema_id,'free')){
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$this->trigger_error('pop lru,But nothing free...',E_USER_ERROR);
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}
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return $info;
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}else{
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return false;
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}
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}
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function _dalloc($schema_id,$lru_freed=false){
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if($free = $this->_get_schema($schema_id,'free')){ //如果lru里有链表
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$this->_seek($free);
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list(,$next) = unpack('V',fread($this->_rs,4));
|
||
$this->_set_schema($schema_id,'free',$next);
|
||
return $free;
|
||
}elseif($lru_freed){
|
||
$this->trigger_error('Bat lru poped freesize',E_USER_ERROR);
|
||
return false;
|
||
}else{
|
||
$ds_offset = $this->_get_dcur_pos();
|
||
$size = $this->_get_schema($schema_id,'size');
|
||
|
||
if($size+$ds_offset > $this->max_size){
|
||
if($info = $this->_lru_pop($schema_id)){
|
||
return $this->_dalloc($schema_id,$info);
|
||
}else{
|
||
$this->trigger_error('Can\'t alloc dataspace',E_USER_ERROR);
|
||
return false;
|
||
}
|
||
}else{
|
||
$this->_set_dcur_pos($ds_offset+$size);
|
||
return $ds_offset;
|
||
}
|
||
}
|
||
}
|
||
|
||
function _get_dcur_pos(){
|
||
$this->_seek($this->dfile_cur_pos);
|
||
list(,$ds_offset) = unpack('V',fread($this->_rs,4));
|
||
return $ds_offset;
|
||
}
|
||
function _set_dcur_pos($pos){
|
||
return $this->_puts($this->dfile_cur_pos,pack('V',$pos));
|
||
}
|
||
|
||
function _free_dspace($size,$pos){
|
||
|
||
if($pos>$this->max_size){
|
||
$this->trigger_error('free dspace over quota:'.$pos,E_USER_ERROR);
|
||
return false;
|
||
}
|
||
|
||
$schema_id = $this->_get_size_schema_id($size);
|
||
if($free = $this->_get_schema($schema_id,'free')){
|
||
$this->_puts($free,pack('V1',$pos));
|
||
}else{
|
||
$this->_set_schema($schema_id,'free',$pos);
|
||
}
|
||
$this->_puts($pos,pack('V1',0));
|
||
}
|
||
|
||
function _dfollow($pos,&$c){
|
||
$c++;
|
||
$this->_seek($pos);
|
||
list(,$next) = unpack('V1',fread($this->_rs,4));
|
||
if($next){
|
||
return $this->_dfollow($next,$c);
|
||
}else{
|
||
return $pos;
|
||
}
|
||
}
|
||
|
||
function _free_node($pos){
|
||
$this->_seek($this->idx_free_pos);
|
||
list(,$prev_free_node) = unpack('V',fread($this->_rs,4));
|
||
$this->_puts($pos*$this->idx_node_size+$this->idx_node_base,pack('V',$prev_free_node).str_repeat("\0",$this->idx_node_size-4));
|
||
return $this->_puts($this->idx_free_pos,pack('V',$pos));
|
||
}
|
||
|
||
function _alloc_idx($data){
|
||
$this->_seek($this->idx_free_pos);
|
||
list(,$list_pos) = unpack('V',fread($this->_rs,4));
|
||
if($list_pos){
|
||
|
||
$this->_seek($list_pos*$this->idx_node_size+$this->idx_node_base);
|
||
list(,$prev_free_node) = unpack('V',fread($this->_rs,4));
|
||
$this->_puts($this->idx_free_pos,pack('V',$prev_free_node));
|
||
|
||
}else{
|
||
$this->_seek($this->idx_seq_pos);
|
||
list(,$list_pos) = unpack('V',fread($this->_rs,4));
|
||
$this->_puts($this->idx_seq_pos,pack('V',$list_pos+1));
|
||
}
|
||
return $this->_create_node($list_pos,$data);
|
||
}
|
||
|
||
function _create_node($pos,$data){
|
||
$this->_puts($pos*$this->idx_node_size + $this->idx_node_base
|
||
,pack('V1V1V1V1V1V1H*',$data['next'],$data['prev'],$data['data'],$data['size'],$data['lru_right'],$data['lru_left'],$data['key']));
|
||
return $pos;
|
||
}
|
||
|
||
function _set_schema($schema_id,$key,$value){
|
||
$info = array_flip($this->schema_struct);
|
||
return $this->_puts(60+$schema_id*$this->schema_item_size + $info[$key]*4,pack('V',$value));
|
||
}
|
||
|
||
function _get_schema($id,$key){
|
||
$info = array_flip($this->schema_struct);
|
||
|
||
$this->_seek(60+$id*$this->schema_item_size);
|
||
unpack('V1'.implode('/V1',$this->schema_struct),fread($this->_rs,$this->schema_item_size));
|
||
|
||
$this->_seek(60+$id*$this->schema_item_size + $info[$key]*4);
|
||
list(,$value) =unpack('V',fread($this->_rs,4));
|
||
return $value;
|
||
}
|
||
|
||
function _all_schemas(){
|
||
$schema = array();
|
||
for($i=0;$i<16;$i++){
|
||
$this->_seek(60+$i*$this->schema_item_size);
|
||
$info = unpack('V1'.implode('/V1',$this->schema_struct),fread($this->_rs,$this->schema_item_size));
|
||
if($info['size']){
|
||
$info['id'] = $i;
|
||
$schema[$i] = $info;
|
||
}else{
|
||
return $schema;
|
||
}
|
||
}
|
||
}
|
||
|
||
function schemaStatus(){
|
||
$return = array();
|
||
foreach($this->_all_schemas() as $k=>$schemaItem){
|
||
if($schemaItem['free']){
|
||
$this->_dfollow($schemaItem['free'],$schemaItem['freecount']);
|
||
}
|
||
$return[] = $schemaItem;
|
||
}
|
||
return $return;
|
||
}
|
||
|
||
function status(&$curBytes,&$totalBytes){
|
||
$totalBytes = $curBytes = 0;
|
||
$hits = $miss = 0;
|
||
|
||
$schemaStatus = $this->schemaStatus();
|
||
$totalBytes = $this->max_size;
|
||
$freeBytes = $this->max_size - $this->_get_dcur_pos();
|
||
|
||
foreach($schemaStatus as $schema){
|
||
$freeBytes+=$schema['freecount']*$schema['size'];
|
||
$miss += $schema['miss'];
|
||
$hits += $schema['hits'];
|
||
}
|
||
$curBytes = $totalBytes-$freeBytes;
|
||
|
||
$return[] = array('name'=>app::get('base')->_('缓存命中'),'value'=>$hits);
|
||
$return[] = array('name'=>app::get('base')->_('缓存未命中'),'value'=>$miss);
|
||
return $return;
|
||
}
|
||
|
||
function trigger_error($errstr,$errno){
|
||
if($errno==E_USER_ERROR){
|
||
if(!$this->_in_fatal_error){
|
||
$this->_in_fatal_error = true;
|
||
$this->_format(true);
|
||
}
|
||
if(function_exists('debug_print_backtrace')){
|
||
echo '<h1>'.$errstr.'</h1><hr />';
|
||
echo '<pre>';
|
||
debug_print_backtrace();
|
||
echo '</pre>';
|
||
exit;
|
||
}else{
|
||
trigger_error($errstr,$errno);
|
||
}
|
||
}else{
|
||
trigger_error($errstr,$errno);
|
||
}
|
||
}
|
||
|
||
}
|