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MDL-47182 admin: warn about delayed scheduled tasks

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Rather than using module cron, use scheduled tasks to work out
if cron has been running recently.

This is not perfect, the admin could disble all tasks, or reschedule
them - but its not complex to compute.
This commit is contained in:
Dan Poltawski 2014-09-16 17:46:18 +01:00
parent 482abd0f70
commit d5fcf4b42c
1 changed files with 2 additions and 1 deletions
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3
admin/index.php
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@ -555,7 +555,8 @@ if (isset($SESSION->pluginuninstallreturn)) {
// Print default admin page with notifications.
$errorsdisplayed = defined('WARN_DISPLAY_ERRORS_ENABLED');
$lastcron = $DB->get_field_sql('SELECT MAX(lastcron) FROM {modules}');
// We make the assumption that at least one schedule task should run once per day.
$lastcron = $DB->get_field_sql('SELECT MAX(lastruntime) FROM {task_scheduled}');
$cronoverdue = ($lastcron < time() - 3600 * 24);
$dbproblems = $DB->diagnose();
$maintenancemode = !empty($CFG->maintenance_enabled);