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[经验分享] Apache内存池中分配结点补充说明

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yuxing

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发表于 2017-1-11 11:14:38 | 显示全部楼层 |阅读模式
这是一个网友发给我的，一直没有能发上来，今天补充以下！

在tingya的blog中Apache内存池内幕第一章节中对apr_memnode_t(内存分配结点，以下简称结点)的结构体成员做了较详细说明，在本文中对结点做进一步补充说明。

以下是结点定义：

struct apr_memnode_t {

apr_memnode_t *next;  /**< next memnode */

apr_memnode_t **ref;  /**< reference to self */

apr_uint32_t index; /**< size */

apr_uint32_t free_index; /**< how much free */

char *first_avail; /**< pointer to first free memory */

char *endp;  /**< pointer to end of free memory */

};


注意：next,ref两变量，其中ref的注释存在歧义。
Apache中，所有的内存使用都需要通过内存池来分配，以提高Apache的内存分配与回收的速度，减少系统调用。这在tingya的blog中已有较详细的解释。下图是摘自<<apache内存池内幕4>>。
DSC0000.jpg


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上图是apr_pool_t的结构体成员图，在该图中，有一个active成员，该成员是apr_memnode_t*类型，管理着池中可用内存链表，上面提到的next,ref正是跟active合用管理了一个完整的可用内存链表。具体的链表用法请见tingya的blog中的讨论。下面我就这两个成员的实际功能做补充说明。
apr_memnode_t *next;

apr_memnode_t **ref;


从定义上看next的意义一目了然，是指向链表的下一结点，而ref是一个二级指针，在内存池的创建函数(apr_pool_create_ex)中，内存池对象也需要向结点申请内存，而该结点又会被放在池对象的active链表中管理：

node->next = node;
node->ref = &node->next;
………
pool->active = pool->self = node;

这时ref指向的是next的地址，这时候链表中只有一个结点；在链表操作时，会使用以下两句代码：
list_insert(active, node);插入操作

list_remove(active);删除操作

这是两个宏定义：

#define list_insert(node, point) do { \

node->ref = point->ref; \

*node->ref = node; \

node->next = point; \

point->ref = &node->next; \

} while (0)


/* list_remove() removes 'node' from its list. */

#define list_remove(node) do { \

*node->ref = node->next; \

node->next->ref = node->ref; \

} while (0)


在宏定义中，list_insert操作，是向链表中point结点后面插入一个结点，
node->ref = point->ref;
当链表中只有一个结点时，这时
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WIDTH: 1980px; POSITION: absolute; TOP: 12474px; HEIGHT: 468px" stroked="f" type="#_x0000_t202"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align="center"><font size="3"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</span><span lang="EN-US"><font face="Times New Roman">1</font></span></font></p></div></td></tr></tbody></table></textbox></shape> DSC0003.jpg <wrap type="none"></wrap><anchorlock></anchorlock></group>

上图是内存池初始时的链表状态，ref指向的是next，即ref=&next.
运行list_insert(node,point)后:
DSC0001.jpg


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WIDTH: 1080px; POSITION: absolute; TOP: 9978px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1079" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect></group><line id="_x0000_s1080" style="POSITION: absolute; flip: y" to="3852,9822" from="2952,8574"><stroke endarrow="block"><font face="Times New Roman" size="3"></font></stroke></line><shape id="_x0000_s1081" style="LEFT: 4932px; WIDTH: 1980px; POSITION: absolute; TOP: 12474px; HEIGHT: 468px" stroked="f" type="#_x0000_t202"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align="center"><font size="3"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</span><span lang="EN-US"><font face="Times New Roman">2</font></span></font></p></div></td></tr></tbody></table></textbox></shape><group id="_x0000_s1082" style="LEFT: 5832px; WIDTH: 1080px; POSITION: absolute; TOP: 8574px; HEIGHT: 1872px" coordsize="1080,1872" coordorigin="2952,9042"><rect id="_x0000_s1083" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9042px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1084" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9510px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">next</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1085" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9978px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">ref</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1086" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect></group><shape id="_x0000_s1087" style="LEFT: 4032px; WIDTH: 720px; POSITION: absolute; TOP: 10491px; HEIGHT: 468px" stroked="f" type="#_x0000_t202"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align="center"><span lang="EN-US"><font face="Times New Roman" size="3">node</font></span></p></div></td></tr></tbody></table></textbox></shape><line id="_x0000_s1088" style="POSITION: absolute; flip: y" to="5832,9198" from="4572,8574"><stroke endarrow="block"><font face="Times New Roman" size="3"></font></stroke></line><line id="_x0000_s1089" style="POSITION: absolute; flip: x y" to="6012,9666" from="4572,9354"><stroke endarrow="block"><font face="Times New Roman" size="3"></font></stroke></line><shape id="_x0000_s1090" style="LEFT: 4755px; WIDTH: 2595px; POSITION: absolute; TOP: 8290px; HEIGHT: 992px; mso-position-horizontal: absolute; mso-position-vertical: absolute" filled="f" path="m2157,992r438,-19l2580,,,8,30,372e" coordsize="2595,992"><font size="3"><font face="Times New Roman"><stroke endarrow="block"></stroke><path arrowok="t"></path></font></font></shape><line id="_x0000_s1091" style="POSITION: absolute; flip: y" to="5832,9822" from="4572,9198"><stroke endarrow="block"><font face="Times New Roman" size="3"></font></stroke></line><wrap type="none"></wrap><anchorlock></anchorlock></group>

运行list_insert(node1, node)后:
DSC0002.jpg



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BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1030" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9510px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">next</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1031" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9978px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">ref</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1032" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect></group><group id="_x0000_s1033" style="LEFT: 1872px; WIDTH: 1080px; POSITION: absolute; TOP: 8574px; HEIGHT: 1872px" coordsize="1080,1872" coordorigin="2952,9042"><rect id="_x0000_s1034" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9042px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1035" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9510px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1036" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9978px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">active</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1037" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect></group><group id="_x0000_s1038" style="LEFT: 1872px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 1872px" coordsize="1080,1872" coordorigin="2952,9042"><rect id="_x0000_s1039" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9042px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1040" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9510px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1041" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9978px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1042" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 10446px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><p><font face="Times New Roman" size="3"></font></p></span></p></div></td></tr></tbody></table></textbox></rect></group><line id="_x0000_s1043" style="POSITION: absolute; flip: y" to="4212,9822" from="2952,8886"><stroke endarrow="block"><font face="Times New Roman" size="3"></font></stroke></line><shape id="_x0000_s1044" style="LEFT: 4932px; WIDTH: 1980px; POSITION: absolute; TOP: 12474px; HEIGHT: 468px" stroked="f" type="#_x0000_t202"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align="center"><font size="3"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</span><span lang="EN-US"><font face="Times New Roman">3</font></span></font></p></div></td></tr></tbody></table></textbox></shape><group id="_x0000_s1045" style="LEFT: 8094px; WIDTH: 1080px; POSITION: absolute; TOP: 8772px; HEIGHT: 1872px" coordsize="1080,1872" coordorigin="2952,9042"><rect id="_x0000_s1046" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9042px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US"><font face="Times New Roman" size="3">……</font></span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1047" style="LEFT: 2952px; WIDTH: 1080px; POSITION: absolute; TOP: 9510px; HEIGHT: 468px" fillcolor="#9cf"><textbox><table cellspacing="0" cellpadding="0" width="100%"><tbody><tr><td style="BORDER-LEFT-COLOR: #d4d0c8; BORDER-BOTTOM-COLOR: #d4d0c8; BORDER-TOP-COLOR: #d4d0c8; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #d4d0c8"><div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">next</span></p></div></td></tr></tbody></table></textbox></rect><rect id="_x0000_s1048" style="LEFT: 2952px; 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