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- <title>╡┐└√░°└»░┤├╝ (DSO) ┴÷┐° - Apache HTTP Server</title>
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- <p class="menu"><a href="./mod/">╕≡╡Γ</a> | <a href="./mod/directives.html">┴÷╜├╛ε╡Θ</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">┐δ╛ε</a> | <a href="./sitemap.html">╗τ└╠╞«╕╩</a></p>
- <p class="apache">Apache HTTP Server Version 2.0</p>
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- <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="./">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>╡┐└√░°└»░┤├╝ (DSO) ┴÷┐°</h1>
- <div class="toplang">
- <p><span>░í┤╔╟╤ ╛≡╛ε: </span><a href="./en/dso.html" hreflang="en" rel="alternate" title="English"> en </a> |
- <a href="./ja/dso.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
- <a href="./ko/dso.html" title="Korean"> ko </a></p>
- </div>
-
- <p>╛╞╞──í └Ñ╝¡╣÷┤┬ ░ⁿ╕«└┌░í ╕≡╡Γ╡Θ└╗ ╝▒┼├╟╧┐⌐ ╝¡╣÷┐í ╞≈╟╘╟╥
- ▒Γ┤╔└╗ ░ß┴ñ╟╥ ╝÷ └╓┤┬ ╕≡╡Γ╚¡╡╚ ╟┴╖╬▒╫╖Ñ└╠┤┘. ╝¡╣÷╕ª ──╞─╟╥╢º
- <code>httpd</code> ╜╟╟α╞─└╧┐í ┴ñ└√└╕╖╬ ╕≡╡Γ└╗ ──╞─└╧╟╥
- ╝÷ └╓┤┘. ╛╞┤╧╕Θ ╕≡╡Γ└╗ <code>httpd</code> ╜╟╟α╞─└╧░·
- ║╨╕«╟╧┐⌐ ╡┐└√░°└»░┤├╝(Dynamic Shared Objects, DSO)╖╬ ──╞─└╧╟╥
- ╝÷ └╓┤┘. DSO ╕≡╡Γ└║ ╝¡╣÷╕ª ──╞─└╧╟╥╢º ──╞─└╧╟╧░┼│¬, Apache
- Extension Tool (<a href="programs/apxs.html">apxs</a>)└╗
- ╗τ┐δ╟╧┐⌐ │¬┴▀┐í ──╞─└╧╟╧┐⌐ ├▀░í╟╥ ╝÷ └╓┤┘.</p>
-
- <p>└╠ ╣«╝¡┤┬ DSO ╕≡╡Γ ╗τ┐δ╣²░· ╣Φ░µ └╠╖╨└╗ ╝│╕φ╟╤┤┘.</p>
- </div>
- <div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#implementation">▒╕╟÷</a></li>
- <li><img alt="" src="./images/down.gif" /> <a href="#usage">╗τ┐δ╣² ┐Σ╛α</a></li>
- <li><img alt="" src="./images/down.gif" /> <a href="#background">╣Φ░µ┴÷╜─</a></li>
- <li><img alt="" src="./images/down.gif" /> <a href="#advantages">└σ┤▄┴í</a></li>
- </ul></div>
- <div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
- <div class="section">
- <h2><a name="implementation" id="implementation">▒╕╟÷</a></h2>
-
- <table class="related"><tr><th>░ⁿ╖├╡╚ ╕≡╡Γ</th><th>░ⁿ╖├╡╚ ┴÷╜├╛ε</th></tr><tr><td><ul><li><code class="module"><a href="./mod/mod_so.html">mod_so</a></code></li></ul></td><td><ul><li><code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code></li></ul></td></tr></table>
-
- <p>╛╞╞──í ╟┘╜╔┐í ┴ñ└√└╕╖╬ ──╞─└╧╟╪╛▀╟╥
- <code class="module"><a href="./mod/mod_so.c.html">mod_so.c</a></code>╢≤┤┬ ╕≡╡Γ└║ ╛╞╞──í ╕≡╡Γ└╗
- └╨╛ε╡Θ└╠▒Γ└º╟╤ DSO╕ª ┴÷┐°╟╤┤┘.
- └╠ ╕≡╡Γ└║ <code class="module"><a href="./mod/core.html">core</a></code>╕ª ┴ª┐▄╟╧░φ DSO░í
- ╡╔ ╝÷ ╛°┤┬ └»└╧╟╤ ╕≡╡Γ└╠┤┘. ╜╟┴ª╖╬ ┤┘╕Ñ ╕≡╡τ ╛╞╞──í ╕≡╡Γ└║
- <a href="install.html">╝│─í ╣«╝¡</a>┐í╝¡ ╝│╕φ╟╤
- <code>configure</code>└╟ <code>--enable-<var>module</var>=shared</code>
- ┐╔╝╟└╗ ╗τ┐δ╟╧┐⌐ DSO╖╬ ──╞─└╧╟╥ ╝÷ └╓┤┘. ╕≡╡Γ└╗
- <code>mod_foo.so</code>┐═ ░░└╠ DSO╖╬ ──╞─└╧╟╤╚─ <code>httpd.conf</code>
- ╞─└╧┐í <code class="module"><a href="./mod/mod_so.html">mod_so</a></code>└╟
- <code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code> ╕φ╖╔╛ε╕ª
- ╗τ┐δ╟╧┐⌐ ╝¡╣÷ ╜├└█╜├ ╚ñ└║ └τ╜├└█╜├ ▒╫ ╕≡╡Γ└╗ └╨╛ε╡Θ└╧ ╝÷
- └╓┤┘.</p>
-
- <p>╛╞╞──í ╕≡╡Γ(╞»╚≈ ┴ª╗∩└┌░í ╕╕╡τ ╕≡╡Γ)╖╬ ╗τ┐δ╟╥ DSO ╞─└╧└╗ ╜▒░╘
- ╕╕╡Θ▒Γ└º╟╪ <a href="programs/apxs.html">apxs</a> (<em>APache
- eXtenSion</em>)╢≤┤┬ ╗⌡╖╬┐ε ┴÷┐° ╟┴╖╬▒╫╖Ñ└╠ └╓┤┘. └╠ ╟┴╖╬▒╫╖Ñ└║
- ╛╞╞──í ╝╥╜║ ╞«╕« <em>╣█┐í╝¡</em> DSO╖╬ ╗τ┐δ╟╥ ╕≡╡Γ└╗
- ──╞─└╧╟╥╢º ╗τ┐δ╟╤┤┘. ░││Σ└║ ╜▒┤┘. ╛╞╞──í╕ª ╝│─í╟╥╢º
- <code>configure</code>┐═ <code>make install</code>└╠
- ╛╞╞──í C ╟∞┤⌡╞─└╧└╗ ╝│─í╟╧░φ, DSO ╞─└╧└╗ ──╞─└╧╟╧▒Γ└º╟╤
- ╟├╖í╞√ ╞»└»└╟ ──╞─└╧╖» ┐╔╝╟░· ╕╡─┐ ┐╔╝╟└╗ <code>apxs</code>
- ╟┴╖╬▒╫╖Ñ┐í ▒Γ╖╧╟╤┤┘. ▒╫╖í╝¡ <code>apxs</code>╕ª ╗τ┐δ╟╧┤┬ ╗τ┐δ└┌┤┬
- ╛╞╞──í ╣Φ╞≈║╗ ╝╥╜║ ╞«╕«╛°└╠, ╢╟ DSO ┴÷┐°└╗ └º╟╤ ╟├╖í╞√ ╞»└»└╟
- ──╞─└╧╖» ┐╔╝╟┐═ ╕╡─┐ ┐╔╝╟┐í ╜┼░µ└╗ ╛▓┴÷╛╩░φ └┌╜┼└╟ ╛╞╞──í
- ╕≡╡Γ ╝╥╜║╕ª ──╞─└╧╟╥ ╝÷ └╓┤┘.</p>
- </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
- <div class="section">
- <h2><a name="usage" id="usage">╗τ┐δ╣² ┐Σ╛α</a></h2>
-
- <p>Apache 2.0└╟ DSO ▒Γ┤╔┐í ┤δ╟╤ ┬¬░φ ░ú╖½╟╤ ┐Σ╛α└╠┤┘:</p>
-
- <ol>
- <li>
- <em>╣Φ╞≈║╗┐í └╓┤┬</em> ╛╞╞──í ╕≡╡Γ└╗ ──╞─└╧╟╧░φ ╝│─í╟╧┤┬
- ░µ┐∞. ┐╣╕ª ╡Θ╛ε <code>mod_foo.c</code>╕ª DSO
- <code>mod_foo.so</code>╖╬:
-
- <div class="example"><p><code>
- $ ./configure --prefix=/path/to/install --enable-foo=shared<br />
- $ make install
- </code></p></div>
- </li>
-
- <li>
- <em>┴ª╗∩└┌░í ╕╕╡τ</em> ╛╞╞──í ╕≡╡Γ└╗ ──╞─└╧╟╧░φ ╝│─í╟╧┤┬
- ░µ┐∞. ┐╣╕ª ╡Θ╛ε <code>mod_foo.c</code>╕ª DSO
- <code>mod_foo.so</code>╖╬:
-
- <div class="example"><p><code>
- $ ./configure --add-module=module_type:/path/to/3rdparty/mod_foo.c --enable-foo=shared<br />
- $ make install
- </code></p></div>
- </li>
-
- <li>
- ░°└» ╕≡╡Γ└╗ <em>│¬┴▀┐í ╗τ┐δ╟╧▒Γ└º╟╪</em> ╛╞╞──í╕ª ▒╕╝║╟╧┤┬
- ░µ┐∞:
-
- <div class="example"><p><code>
- $ ./configure --enable-so<br />
- $ make install
- </code></p></div>
- </li>
-
- <li>
- <em>┴ª╗∩└┌░í ╕╕╡τ</em> ╛╞╞──í ╕≡╡Γ└╗ ──╞─└╧╟╧░φ ╝│─í╟╧┤┬
- ░µ┐∞. <a href="programs/apxs.html">apxs</a>╕ª ╗τ┐δ╟╧┐⌐
- ╛╞╞──í ╝╥╜║ ╞«╕« <em>╣█┐í╝¡</em> <code>mod_foo.c</code>╕ª
- DSO <code>mod_foo.so</code>╖╬:
-
- <div class="example"><p><code>
- $ cd /path/to/3rdparty<br />
- $ apxs -c mod_foo.c<br />
- $ apxs -i -a -n foo mod_foo.la
- </code></p></div>
- </li>
- </ol>
-
- <p>╕≡╡τ ░µ┐∞ └╧┤▄ ░°└» ╕≡╡Γ└╠ ──╞─└╧╡╟╕Θ, <code>httpd.conf</code>┐í
- <code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code> ┴÷╜├╛ε╕ª
- ╗τ┐δ╟╧┐⌐ ╛╞╞──í░í ▒╫ ╕≡╡Γ└╗ └╨╛ε╡Θ└╠░╘ ╕╕╡τ┤┘.</p>
- </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
- <div class="section">
- <h2><a name="background" id="background">╣Φ░µ┴÷╜─</a></h2>
-
- <p>╟÷┤δ└√└╬ └»┤╨╜║╖∙┐í┤┬ <em>╡┐└√░°└»░┤├╝</em> (DSO)└╟
- ╡┐└√ ╕╡┼╖/╖╬╡∙(dynamic linking/loading)└╠╢≤░φ ╟╧┐⌐, ╞»║░╟╤
- ╟ⁿ╜─└╟ ╜╟╟α─┌╡σ ┴╢░ó└╗ ╕╕╡Θ╛ε ╜╟╟α┴▀└╬ ╜╟╟α╟┴╖╬▒╫╖Ñ└╟
- ┴╓╝╥░°░ú┐í └╨╛ε╡Θ└╠┤┬ ╕┌┴° ▒Γ┤╔└╠ └╓┤┘.</p>
-
- <p>║╕┼δ ╡╬░í┴÷ ╣µ╣²└╕╖╬ └╨╛ε╡Θ└╧ ╝÷ └╓┤┘. ╟╧│¬┤┬ ╜╟╟α╟┴╖╬▒╫╖Ñ└╠
- ╜├└█╟╥╢º <code>ld.so</code>╢≤┤┬ ╜├╜║┼█ ╟┴╖╬▒╫╖Ñ└╠ └┌╡┐└╕╖╬
- └╨╛ε╡Θ└╠┤┬ ░µ┐∞░φ, ┤┘╕Ñ ╟╧│¬┤┬ ╜╟╟α┴▀└╬ ╟┴╖╬▒╫╖Ñ└╠
- <code>dlopen()/dlsym()</code> ╜├╜║┼█╚ú├Γ╖╬ └»┤╨╜║ ╖╬┤⌡(loader)└╟
- ╜├╜║┼█ └╬┼═╞Σ└╠╜║└╗ ╗τ┐δ╟╧┐⌐ ┴≈┴ó └╨╛ε╡Θ└╠┤┬ ░µ┐∞┤┘.</p>
-
- <p>├╣╣°┬░ ░µ┐∞ DSO╕ª ║╕┼δ <em>░°└»╢≤└╠║Ω╖»╕«(shared libraries)</em>
- ╚ñ└║ <em>DSO ╢≤└╠║Ω╖»╕«</em>╢≤░φ ║╬╕ú╕τ, ╞─└╧└║
- <code>libfoo.so</code>│¬ <code>libfoo.so.1.2</code> ░░└║
- └╠╕º└╗ ░í┴°┤┘. └╠╡Θ└║ ╜├╜║┼█ ╡≡╖║┼Σ╕«(║╕┼δ <code>/usr/lib</code>)┐í
- └╓░φ, ──╞─└╧╜├ ╕╡─┐ ╕φ╖╔╛ε┐í <code>-lfoo</code>╕ª ┴╓╛ε
- ╜╟╟α╞─└╧░· ┐¼░ß╟╤┤┘. └╠╖╕░╘ ┴≈┴ó ╜ß┴╪ ╢≤└╠║Ω╖»╕«┤┬ ╜╟╟α╞─└╧┐í
- ┬ⁿ┴╢╡╟┐⌐╝¡, ╟┴╖╬▒╫╖Ñ└╠ ╜├└█╟╥╢º ╕╡─┐ ┐╔╝╟ <code>-R</code>╖╬
- ┴≈┴ó ┴÷┴ñ╟╤ ░µ╖╬, ╚»░µ║»╝÷ <code>LD_LIBRARY_PATH</code>╖╬
- ┴÷┴ñ╟╤ ░µ╖╬ ╚ñ└║ <code>/usr/lib</code>┐í╝¡ └»┤╨╜║ ╖╬┤⌡░í
- <code>libfoo.so</code>╕ª ├ú└╗ ╝÷ └╓┤┘. ▒╫╖»╕Θ ╜╟╟α╟┴╖╬▒╫╖Ñ└╟
- (╛╞┴≈ ╕°├ú└║(unresolved)) ╜╔║╝(symbol)└╗ DSO┐í╝¡ ├ú░╘╡╚┤┘.</p>
-
- <p>DSO┤┬ ║╕┼δ ╜╟╟α╟┴╖╬▒╫╖Ñ└╟ ╜╔║╝└╗ ├ú┴÷╛╩▒Γ ╢º╣«┐í (DSO░í
- └τ╗τ┐δ░í┤╔╟╤ └╧╣▌└√└╬ ─┌╡σ ╢≤└╠║Ω╖»╕«└╠╣╟╖╬) ├ú▒Γ┤┬ ┐⌐▒Γ╝¡
- │í│¡┤┘. └»┤╨╜║ ╖╬┤⌡░í ╜╔║╝ ├ú▒Γ╕ª ┐╧└ⁿ╚≈ ┤π┤τ╟╧╣╟╖╬ ╜╟╟α╟┴╖╬▒╫╖Ñ└╠
- ┴≈┴ó DSO┐í╝¡ ╜╔║╝└╗ ├ú└╗ ╟╩┐Σ░í ╛°┤┘. (╗τ╜╟ <code>ld.so</code>╕ª
- ║╬╕ú┤┬ ─┌╡σ┤┬ ┴ñ└√└╠ ╛╞┤╤ ╕≡╡τ ╜╟╟α╟┴╖╬▒╫╖Ñ┐í ╕╡┼⌐╡╟┤┬ ╜╟╟α╜├
- ╜├└█─┌╡σ└╟ └╧║╬┤┘.) ░°┼δ╡╚ ╢≤└╠║Ω╖»╕« ─┌╡σ╕ª ╡┐└√└╕╖╬ └╨╛ε╡Θ└╠┤┬
- └σ┴í└║ ╕φ╚«╟╧┤┘. ╢≤└╠║Ω╖»╕« ─┌╡σ░í ╕≡╡τ ╟┴╖╬▒╫╖Ñ┐í ┴▀║╣╟╪╝¡
- └·└σ╡╟┤┬ ┤δ╜┼ <code>libc.so</code>┐═ ░░└║ ╜├╜║┼█ ╢≤└╠║Ω╖»╕«┐í
- ╟╤╣°╕╕ └·└σ╡╟▒Γ ╢º╣«┐í ╡≡╜║┼⌐ ░°░ú└╠ └²╛α╡╚┤┘.</p>
-
- <p>╡╬╣°┬░ ░µ┐∞ DSO╕ª ║╕┼δ <em>░°└»░┤├╝(shared objects)</em>
- ╚ñ└║ <em>DSO ╞─└╧</em>└╠╢≤░φ ║╬╕ú░φ, (▒╘─ó╗≤ └╠╕º└║
- <code>foo.so</code>└╠┴÷╕╕) ╞─└╧└╟ ╚«└σ└┌┤┬ └┌└»╖╙┤┘. └╠
- ╞─└╧╡Θ└║ ║╕┼δ ╟┴╖╬▒╫╖Ñ └┌├╝ ╡≡╖║┼Σ╕«┐í └º─í╟╧░φ ╜╟╟α╟┴╖╬▒╫╖Ñ┐í
- └┌╡┐└╕╖╬ ┐¼░ß╡╟┴÷ ╛╩┤┬┤┘. ┤δ╜┼ ╜╟╟α╟┴╖╬▒╫╖Ñ└║ ╜╟╟α╜├
- <code>dlopen()</code>└╗ ╗τ┐δ╟╧┐⌐ DSO╕ª ┴╓╝╥░°░ú┐í
- ┴≈┴ó └╨╛ε╡Θ┐⌐╛▀ ╟╤┤┘. └╠╢º ╜╟╟α╟┴╖╬▒╫╖Ñ└║ DSO┐í╝¡ ╜╔║╝└╗
- ├ú┴÷ ╛╩┤┬┤┘. ┤δ╜┼ ╛╒┐í╝¡ ║╗ └»┤╨╜║ ╖╬┤⌡┤┬ └┌╡┐└╕╖╬ ╜╟╟α╞─└╧░·
- ╜╟╟α╞─└╧└╠ └╠╣╠ └╨╛ε╡Θ└╬ DSO ╢≤└╠║Ω╖»╕«(╞»╚≈ ╟╫╗≤ ┴╕└τ╟╧┤┬
- <code>libc.so</code>└╟ ╕≡╡τ ╜╔║╝)┐í╝¡ DSO└╟ (╛╞┴≈ ╕°├ú└║)
- ╜╔║╝└╗ ├ú┤┬┤┘. ▒╫╖í╝¡ DSO┤┬ ╕╢─í ├│└╜║╬┼═ ╜╟╟α╟┴╖╬▒╫╖Ñ┐í
- ┴ñ└√└╕╖╬ ╕╡┼⌐╡╚░═░· ░░└╠ ╜╟╟α╞─└╧└╟ ╜╔║╝└╗ ╛╦░╘╡╚┤┘.</p>
-
- <p>DSO└╟ API╕ª └╠┐δ╟╧▒Γ└º╟╪╝¡ ╕╢┴÷╕╖└╕╖╬ ╜╟╟α╟┴╖╬▒╫╖Ñ└║
- <code>dlsym()</code>└╕╖╬ DSO┐í╝¡ ╞»┴ñ ╜╔║╝└╗ ├ú╛╞╝¡, ╛╒└╕╖╬
- ╗τ┐δ╟╧▒Γ└º╟╪ ╡≡╜║╞╨─í(dispatch) ╟Ñ <em>╡ε</em>┐í └·└σ╟╤┤┘.
- ┤┘╕Ñ ╕╗╖╬ ╜╟╟α╟┴╖╬▒╫╖Ñ└║ ╗τ┐δ╟╥ ╕≡╡τ ╜╟║╝└╗ ┴≈┴ó ├ú╛╞╛▀╟╤┤┘.
- └╠╖▒ ▒╕┴╢└╟ └σ┴í└║ ╟┴╖╬▒╫╖Ñ└╟ └╧║╬╕ª ╟┴╖╬▒╫╖Ñ└╠
- ╟╩┐Σ╟╥╢º▒ε┴÷ └╨╛ε╡Θ└╠┴÷ ╛╩╛╞╡╡ (▒╫╖í╝¡ ╕▐╕≡╕«╕ª │╢║±╟╧┴÷
- ╛╩░╘) ╡╚┤┘┤┬ ┴í└╠┤┘. ▒Γ║╗ ╟┴╖╬▒╫╖Ñ└╟ ▒Γ┤╔└╗ ╚«└σ╟╧▒Γ└º╟╪
- ╟╩┐Σ╟╤ ░µ┐∞ └╠ ║╬║╨└╗ ╡┐└√└╕╖╬ └╨╛ε╡Θ└╧ ╝÷ └╓┤┘.</p>
-
- <p>└╠╖▒ DSO ▒╕┴╢░í └┌┐¼╜║╖┤░╘ ║╕└╠┴÷╕╕, ├╓╝╥╟╤ ╛ε╖┴┐ε ┴í└╠
- ╟╤░í┴÷└╓┤┘. ╟┴╖╬▒╫╖Ñ└╗ ╚«└σ╟╧▒Γ└º╟╪ DSO╕ª ╗τ┐δ╟╥╢º DSO░í
- ╜╟╟α╟┴╖╬▒╫╖Ñ└╟ ╜╔║╝└╗ ├ú┤┬ └╧└╠┤┘. ┐╓? DSO░í ╜╟╟α╟┴╖╬▒╫╖Ñ└╟
- ╜╔║╝└╗ "┐¬└╕╖╬ ├ú┤┬ ░═"└║ (╢≤└╠║Ω╖»╕«┤┬ └┌╜┼└╗ ╗τ┐δ╟╧┤┬ ╟┴╖╬▒╫╖Ñ┐í
- ┤δ╟╪ ╕≡╕Ñ┤┘┤┬) ╢≤└╠║Ω╖»╕« ╝│░Φ┐í ╣▌╟╧╕τ, ╕≡╡τ ╟├╖í╞√┐í╝¡
- ┴÷┐°╡╟┴÷╛╩░φ ╟Ñ┴╪╚¡╡╟┴÷╡╡ ╛╩╛╥▒Γ ╢º╣«└╠┤┘. ╜╟┴ª╖╬ ╜╟╟α╞─└╧└╟
- └ⁿ┐¬╜╔║╝(global symbol)└║ ║╕┼δ └═╜║╞≈╞«(export)╡╟┴÷ ╛╩▒Γ╢º╣«┐í
- DSO░í ╗τ┐δ╟╥ ╝÷ ╛°┤┘. DSO╕ª ╗τ┐δ╟╧┐⌐ ╜╟╟α┴▀ ╟┴╖╬▒╫╖Ñ└╗ ╚«└σ╟╧╖┴╕Θ
- ╕╡─┐┐í░╘ ╕≡╡τ └ⁿ┐¬╜╔║╝└╗ └═╜║╞≈╞«╟╧╡╡╖╧ ░¡┴ª╟╧┤┬ ░═└╠ ┴╓╡╚
- ╟╪░ß├Ñ└╠┤┘.</p>
-
- <p>░°└»╢≤└╠║Ω╖»╕«┤┬ DSO ╣µ╜─└╟ ╝│░Φ┐°─ó┤δ╖╬ └ⁿ╟ⁿ└√└╠▒Γ╢º╣«┐í
- ┐ε┐╡├╝┴ª░í ┴ª░°╟╧┤┬ ░┼└╟ ╕≡╡τ ┴╛╖∙└╟ ╢≤└╠║Ω╖»╕«░í ╗τ┐δ╟╤┤┘.
- ╣▌┤δ╖╬ ╕╣└║ ╟┴╖╬▒╫╖Ñ└║ ╟┴╖╬▒╫╖Ñ└╗ ╚«└σ╟╧▒Γ└º╟╪ ░°└»░┤├╝╕ª
- ╗τ┐δ╟╧┴÷ ╛╩┤┬┤┘.</p>
-
- <p>1998│Γ ╜╟╟α┴▀ ╜╟┴ª╖╬ ▒Γ┤╔└╗ ╚«└σ╟╧▒Γ└º╟╪ DSO ▒╕┴╢╕ª ╗τ┐δ╟╤
- ╝╥╟┴╞«┐■╛ε ╞╨┼░┴÷┤┬ (XS ▒╕┴╢┐═ DynaLoader ╕≡╡Γ└╗ ╗τ┐δ╟╤)
- Perl 5, Netscape Server <em>╡ε</em>└╕╖╬ ╡σ╣░╛·┤┘. ╛╞╞──í┤┬
- └╠╣╠ ▒Γ┤╔└╗ ╚«└σ╟╧▒Γ└º╟╪ ╕≡╡Γ ░││Σ└╗ ╗τ┐δ╟▀░φ ┐▄║╬ ╕≡╡Γ└╗
- ╛╞╞──í ╟┘╜╔▒Γ┤╔┐í ┐¼░ß╟╧▒Γ└º╟╪ │╗║╬└√└╕╖╬ ╡≡╜║╞╨─í╕±╖╧└╗
- └╠┐δ╟╤ ┴ó▒┘╣µ╣²└╗ ╗τ┐δ╟▀▒Γ╢º╣«┐í 1.3 ╣÷└ⁿ║╬┼═ └╠ ┤δ┐¡┐í ╟╒╖∙╟▀┤┘.
- ▒╫╖í╝¡ ╛╞╞──í┤┬ ╜╟╟α┴▀ ╕≡╡Γ└╗ └╨╛ε╡Θ└╠┤┬╡Ñ DSO╕ª ╗τ┐δ╟╧╡╡╖╧
- ┐ε╕φ┴÷┐÷┴│┤┘.</p>
- </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
- <div class="section">
- <h2><a name="advantages" id="advantages">└σ┤▄┴í</a></h2>
-
- <p>╛╒┐í╝¡ ╕╗╟╤ DSO╕ª ╗τ┐δ╟╧╕Θ ┤┘└╜░· ░░└║ └σ┴í└╠ └╓┤┘:</p>
-
- <ul>
- <li>╜╟┴ª ╝¡╣÷ ╟┴╖╬╝╝╜║░í ──╞─└╧╜├ <code>configure</code>
- ┐╔╝╟┤δ╜┼ <code>httpd.conf</code>└╟ <code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code>└╗ ╗τ┐δ╟╧┐⌐ ╜╟╟α┴▀┐í
- ░ß╟╒╡╟╣╟╖╬ ╝¡╣÷ ╞╨┼░┴÷ ╜╟╟α└╠ ┤⌡ └»┐¼╟╧┤┘. ┐╣╕ª ╡Θ╛ε ╟╤╣°└╟
- ╛╞╞──í ╝│─í╕╕└╕╖╬ ┤┘╕Ñ ╝¡╣÷(╟Ñ┴╪ ╣÷└ⁿ░· SSL ╣÷└ⁿ, ├╓╝╥╚¡
- ╣÷└ⁿ░· ▒Γ┤╔├▀░í ╣÷└ⁿ [mod_perl, PHP3] <em>╡ε</em>)╕ª ╜╟╟α╟╥
- ╝÷ └╓┤┘.</li>
-
- <li>╝¡╣÷┤┬ ╝│─í╚─┐í╡╡ ┴ª╗∩└┌░í ╕╕╡τ ╕≡╡Γ└╗ ╗τ┐δ╟╧┐⌐ ╜▒░╘
- ╚«└σ╟╥ ╝÷ └╓┤┘. ├╓╝╥╟╤ ▒Γ╛≈└╟ ╞╨┼░┴÷ ┴ª└█└┌┤┬ ╛╞╞──í ╟┘╜╔
- ╞╨┼░┴÷┐═ ║░╡╡╖╬ PHP3, mod_perl, mod_fastcgi <em>╡ε</em>└╗
- ├▀░í ╞╨┼░┴÷╖╬ ╕╕╡Θ ╝÷ └╓╛ε╝¡ ┼½ └╠╡µ└╠┤┘.</li>
-
- <li>DSO┐═ <code>apxs</code>╕ª ░í┴÷░φ ╛╞╞──í ╝╥╜║ ╞«╕« ╣█┐í╝¡
- └█╛≈╟╧░φ <code>apxs -i</code>┐═ <code>apachectl restart</code>
- ╕φ╖╔╛ε╕╕└╕╖╬ ╟÷└τ ░│╣▀╟╤ ╕≡╡Γ└╟ ╗⌡ ╣÷└ⁿ└╗ ╜╟╟α┴▀└╬ ╛╞╞──í
- ╝¡╣÷┐í ╣▌┐╡╟╥ ╝÷ └╓╛ε╝¡ ┤⌡ ╜▒░╘ ╛╞╞──í ╕≡╡Γ└╗ ░│╣▀╟╥ ╝÷
- └╓┤┘.</li>
- </ul>
-
- <p>DSO┤┬ ┤┘└╜░· ░░└║ ┤▄┴í└╠ └╓┤┘:</p>
-
- <ul>
- <li>╟┴╖╬▒╫╖Ñ└╟ ┴╓╝╥░°░ú┐í ─┌╡σ╕ª ╡┐└√└╕╖╬ └╨╛ε╡Θ└╠┤┬ ▒Γ┤╔└╗
- ┴÷┐°╟╧┴÷╛╩┤┬ ┐ε┐╡├╝┴ª░í └╓▒Γ ╢º╣«┐í ╕≡╡τ ╟├╖í╞√┐í╝¡ DSO╕ª
- ╗τ┐δ╟╥ ╝÷ ╛°┤┘.</li>
-
- <li>└»┤╨╜║ ╖╬┤⌡░í ╜╔║╝└╗ ├ú╛╞╛▀╟╧▒Γ ╢º╣«┐í ╝¡╣÷ ╜├└█└╠
- ╛α 20% ┴ñ╡╡ ┤╩╛ε┴°┤┘.</li>
-
- <li>╝¡╣÷┤┬ └º─í╡╢╕│─┌╡σ(position independent code, PIC)
- ╢º╣«┐í └²┤δ┴╓╝╥┴÷┴ñ(absolute addressing)║╕┤┘ ┤└╕░
- ╗≤┤δ┴╓╝╥┴÷┴ñ(relative addressing)└╟ ║╣└Γ╟╤ ╛ε╝└║φ╖» ▒Γ╣²└╠
- ╟╩┐Σ╟╧╣╟╖╬ ╛ε╢▓ ╟├╖í╞√┐í╝¡ ╜╟╟α╜├ ╛α 5% ┴ñ╡╡ ┤╩┤┘.</li>
-
- <li>DSO ╕≡╡Γ└╗ ┤┘╕Ñ DSO▒Γ╣▌ ╢≤└╠║Ω╖»╕«(<code>ld -lfoo</code>)┐í
- ╕╡┼⌐╟╥ ╝÷ ╛°┤┬ ╟├╖í╞√└╠ └╓▒Γ╢º╣«┐í (┐╣╕ª ╡Θ╛ε ELF▒Γ╣▌
- ╟├╖í╞√└║ ┴÷┐°╟╧┴÷╕╕ a.out▒Γ╣▌ ╟├╖í╞√└║ ║╕┼δ └╠ ▒Γ┤╔└╗
- ┴÷┐°╟╧┴÷ ╛╩┤┬┤┘) ╕≡╡τ ┴╛╖∙└╟ ╕≡╡Γ┐í DSO╕ª ╗τ┐δ╟╥ ╝÷ ╛°┤┘.
- ┤┘╕Ñ ╕╗╖╬ DSO ╞─└╧╖╬ ──╞─└╧╟╧┤┬ ╕≡╡Γ└║ ╛╞╞──í ╟┘╜╔░· ╛╞╞──í
- ╟┘╜╔└╠ ╗τ┐δ╟╧┤┬ C ╢≤└╠║Ω╖»╕«(<code>libc</code>)┐═ ┤┘╕Ñ
- ╡┐└√/┴ñ└√ ╢≤└╠║Ω╖»╕«, └º─í╡╢╕│─┌╡σ╕ª ┤π░φ └╓┤┬ ┴ñ└√ ╢≤└╠║Ω╖»╕«
- ╛╞─½└╠║Ω(<code>libfoo.a</code>)└╟ ╜╔║╝╕╕└╗ ╗τ┐δ╟╥ ╝÷ └╓┤┘.
- ┤┘╕Ñ ─┌╡σ╕ª ╗τ┐δ╟╧╖┴╕Θ ╛╞╞──í ╟┘╜╔└╠ ▒╫░═└╗ ┬ⁿ┴╢╟╧┤°┴÷,
- <code>dlopen()</code>└╕╖╬ ┴≈┴ó ─┌╡σ╕ª └╨╛ε╡Θ┐⌐╛▀ ╟╤┤┘.</li>
- </ul>
-
- </div></div>
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