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Merge branch 'MDL-51111-muc-reset' of https://github.com/brendanheywood/moodle

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This commit is contained in:
Víctor Déniz 2021-02-24 14:07:33 +00:00
commit f86591b516
1 changed files with 10 additions and 0 deletions
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10
cache/locallib.php vendored
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@ -68,6 +68,7 @@ class cache_config_writer extends cache_config {
*/
protected function config_save() {
global $CFG;
static $confighash = '';
$cachefile = static::get_config_file_path();
$directory = dirname($cachefile);
if ($directory !== $CFG->dataroot && !file_exists($directory)) {
@ -86,6 +87,15 @@ class cache_config_writer extends cache_config {
// Prepare the file content.
$content = "<?php defined('MOODLE_INTERNAL') || die();\n \$configuration = ".var_export($configuration, true).";";
// Do both file content and hash based detection because this might be called
// many times within a single request.
$hash = sha1($content);
if (($hash === $confighash) || (file_exists($cachefile) && $content === file_get_contents($cachefile))) {
// Config is unchanged so don't bother locking and writing.
$confighash = $hash;
return;
}
// We need to create a temporary cache lock instance for use here. Remember we are generating the config file
// it doesn't exist and thus we can't use the normal API for this (it'll just try to use config).
$lockconf = reset($this->configlocks);