Changeset 517 for trunk/admin/xcache.php

Timestamp:

2008-02-17T11:52:38+01:00 (5 years ago)

Author:

moo

Message:

show free blocks as graph

File:

• trunk/admin/xcache.php (modified) (1 diff)

trunk/admin/xcache.php

@@ -73 +73 @@
 
     return '0 s';
+}
+
+function freeblock_to_graph($freeblocks, $size)
+{
+    global $free_graph_width;
+
+    // cached in static variable
+    static $graph_initial;
+    if (!isset($graph_initial)) {
+        for ($i = 0; $i < $free_graph_width; $i ++) {
+            $graph_initial[$i] = 0;
+        }
+    }
+    $graph = $graph_initial;
+    foreach ($freeblocks as $b) {
+        $begin = $b['offset'] / $size * $free_graph_width;
+        $end = ($b['offset'] + $b['size']) / $size * $free_graph_width;
+
+        $graph[(int) $begin] += 1 - ($begin - (int) $begin);
+        $graph[(int) $end] += ($end - (int) $end);
+        for ($i = (int) $begin + 1, $e = (int) $end; $i < $e; $i ++) {
+            $graph[$i] = 1;
+        }
+    }
+    $html = array();
+    $c = 255;
+    foreach ($graph as $k => $v) {
+        $v = (int) ($v * $c);
+        $r = $g = $c - $v;
+        $b = $c;
+        $html[] = '<div style="background: rgb(' . "$r,$g,$b" . ')"></div>';
+    }
+    return implode('', $html);
 }