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MDL-44357 theme: Allow core to compile LESS in PHP

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This commit is contained in:
Frederic Massart 2014-02-19 17:02:11 +08:00
parent 9b8555fbea
commit d433cf37cd
68 changed files with 10947 additions and 47 deletions
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25
theme/styles.php
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@ -148,6 +148,25 @@ if ($type === 'editor') {
css_store_css($theme, "$candidatedir/editor.css", $csscontent, false);
} else {
$lock = null;
// Lock system to prevent concurrent requests to compile LESS, which is really slow and CPU intensive.
// Each client should wait for one to finish the compilation before starting a new compiling process.
// We only do this when the file will be cached...
if ($type === 'less' && $cache) {
$lockfactory = \core\lock\lock_config::get_lock_factory('core_theme_get_css_content');
// We wait for the lock to be acquired, the timeout does not need to be strict here.
$lock = $lockfactory->get_lock($themename, rand(15, 30));
if (file_exists($candidatesheet)) {
// The file was built while we waited for the lock, we release the lock and serve the file.
if ($lock) {
$lock->release();
}
css_send_cached_css($candidatesheet, $etag);
}
}
// Older IEs require smaller chunks.
$csscontent = $theme->get_css_content();
@ -165,7 +184,13 @@ if ($type === 'editor') {
$chunkurl = "{$relroot}/theme/styles.php?theme={$themename}&rev={$rev}&type=all&svg=0";
}
}
css_store_css($theme, "$candidatedir/all.css", $csscontent, true, $chunkurl);
// Release the lock.
if ($lock) {
$lock->release();
}
}
if (!$cache) {