/**
* Tries to free the given amount of memory
*
* @param int $size Memory to free in bytes
* @return bool Returns if the memory could be freed
*/
public function freeMemory($size)
{
$currentMemory = memory_get_usage(TRUE);
$freedMemory = 0;
$databases = Manager::getIdentifiersByTag(Coordinator::MEMORY_MANAGER_TAG, TRUE);
foreach ($databases as $identifier) {
Manager::free($identifier);
$freedMemory += $currentMemory - memory_get_usage(TRUE);
$currentMemory = memory_get_usage(TRUE);
if ($freedMemory >= $size) {
return TRUE;
}
// DebugUtility::var_dump(gc_enabled(), array_keys(get_defined_vars()), GeneralUtility::formatBytes($currentMemory), GeneralUtility::formatBytes($freedMemory));
}
// DebugUtility::var_dump(gc_enabled(), array_keys(get_defined_vars()), GeneralUtility::formatBytes($currentMemory), GeneralUtility::formatBytes($freedMemory));
return FALSE;
}
/**
* Returns an array of the identifiers of available databases
*
* @return array
*/
public function listDatabases()
{
$persistedDatabases = $this->listPersistedDatabases();
$persistedDatabases = array_combine($persistedDatabases, $persistedDatabases);
$inMemoryDatabases = Manager::getIdentifiersByTag(self::MEMORY_MANAGER_TAG, TRUE);
$inMemoryDatabases = array_combine($inMemoryDatabases, $inMemoryDatabases);
$allDatabases = array_merge($persistedDatabases, $inMemoryDatabases);
return array_keys($allDatabases);
}
/**
* @test
*/
public function getIdentifierNotExistsGraceful()
{
$this->assertEmpty(Manager::getIdentifiersByTag('tag' . time(), TRUE));
}
