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Add shared memory hit counter example to redbean

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Justine Tunney 2022-10-08 08:39:13 -07:00
parent 38e3ab57a6
commit 8aca94f951
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GPG key ID: BE714B4575D6E328
6 changed files with 114 additions and 29 deletions
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35
tool/net/demo/hitcounter.lua Normal file
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Write([[<!doctype html>
<title>redbean mapshared demo</title>
<style>
body { padding: 1em; }
h1 a { color: inherit; text-decoration: none; }
h1 img { border: none; vertical-align: middle; }
input { margin: 1em; padding: .5em; }
pre { margin-left: 2em; }
p { word-break: break-word; max-width: 650px; }
dt { font-weight: bold; }
dd { margin-top: 1em; margin-bottom: 1em; }
.hdr { text-indent: -1em; padding-left: 1em; }
</style>
<h1>
<a href="/"><img src="/redbean.png"></a>
<a href="fetch.lua">redbean mapshared demo</a>
</h1>
<p>
This page displays a <code>unix.mapshared()</code> hit counter of
the <code>GetPath()</code>.
</p>
<dl>
]])
Lock()
s = shm:read(SHM_JSON)
if s == '' then s = '{}' end
t = DecodeJson(s)
Unlock()
for k,v in pairs(t) do
Write('<dt>%s<dd>%d\n' % {EscapeHtml(k), v})
end
Write('</dl>')