mirror of https://github.com/BOINC/boinc.git
42 lines
1.3 KiB
PHP
42 lines
1.3 KiB
PHP
<?php
|
|
require_once("docutil.php");
|
|
page_head("Trickle message implementation");
|
|
echo "
|
|
<p>
|
|
On the client,
|
|
<code>boinc_send_trickle_up()</code>
|
|
creates a file 'trickle_up' in the slot directory
|
|
and signals the core client via shared memory.
|
|
When the core client gets this signal,
|
|
or when the application exits,
|
|
it moves the file from 'slot/trickle'
|
|
to 'project/trickle_up_resultid_time'.
|
|
<p>
|
|
When the core client sends an RPC to a server,
|
|
it scans the project directory for these trickle-up files
|
|
includes them in the request,
|
|
and appends '.sent' to their filenames.
|
|
On successful RPC completion it deletes trickle-up files
|
|
that were sent earlier.
|
|
|
|
<p>
|
|
On the server,
|
|
messages are stored in database tables 'trickle_up' and 'trickle_down'.
|
|
The scheduling server extracts trickle messages from
|
|
the request message and inserts them in the trickle_up table.
|
|
If the 'trickle_down' flag in the configuration is set,
|
|
it scans the database for trickle-down messages for this host
|
|
and includes them in the reply message,
|
|
setting the 'handled' flag in the DB record.
|
|
|
|
<p>
|
|
The client parses trickle-down messages
|
|
in the scheduler reply,
|
|
creates files of the form trickle_down_createtime_id
|
|
in the slot directory,
|
|
and signals the app via shared memory that a message is available.
|
|
|
|
";
|
|
page_tail();
|
|
?>
|