Mercurial > hg > Papers > 2014 > masakoha-thesis > final

changeset 17:2d1060de4dfe

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write divide read の実装
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Wed, 29 Jan 2014 18:29:16 +0900
parents 56cd6800acb5
children e735ac7509c6
files slide/index.html
diffstat 1 files changed, 16 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/slide/index.html	Wed Jan 29 17:32:39 2014 +0900
+++ b/slide/index.html	Wed Jan 29 18:29:16 2014 +0900
@@ -176,20 +176,33 @@
           <li>
           明示的な read
           </li>
-
           <li>
           先読みを自分で書ける(制御できる)
           </li>
-
           <li>
           code が煩雑
           </li>
-
           <li>
           memory より大きなファイルを扱える
           </li>
         </ul>
       </article>
 
+      <article>
+        <h3>divide read の実装(1)</h3>
+          <br>
+          <h3 class="yellow">Task の記述</h3>
+        <pre>
+mmap(SchedTask *s, void *in, void *out)
+{
+    FileReadPtr fr = (FileReadPtr)in;
+    int map = MAP_PRIVATE;
+
+    fr->read_text =
+        (char*)mmap(NULL,fr->filesize,PROT_READ,map,fr->fd,(off_t)0);
+}
+</pre>
+      </article>
+
   </body>
 </html>