/**
* 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;
}
/**
* Drops the database with the given identifier
*
* @param string $databaseIdentifier Unique identifier of the database
* @return void
*/
public function dropDatabase($databaseIdentifier)
{
GeneralUtility::assertDatabaseIdentifier($databaseIdentifier);
// If the database is in the object store remove it
if (Manager::hasObject($databaseIdentifier)) {
Manager::free($databaseIdentifier);
}
if (!$this->databaseExists($databaseIdentifier)) {
throw new InvalidDatabaseException(sprintf('Database "%s" does not exist', $databaseIdentifier), 1412525836);
}
$this->dataWriter->dropDatabase($databaseIdentifier);
$this->eventEmitter->emit(Event::DATABASE_DROPPED, array($databaseIdentifier));
}
/**
* @test
* @expectedException \Cundd\PersistentObjectStore\Memory\Exception\ManagerException
*/
public function failedFreeTest()
{
$identifier = 'not-existing-identifier';
Manager::free($identifier);
}
