bool WriteBatchExecutor::ExecInsertsState::_lockAndCheckImpl(WriteOpResult* result) {
if (hasLock()) {
txn->getCurOp()->enter(_context.get());
return true;
}
invariant(!_context.get());
_writeLock.reset(new Lock::DBWrite(txn->lockState(), request->getNS()));
if (!checkIsMasterForDatabase(request->getNS(), result)) {
return false;
}
if (!checkShardVersion(txn, &shardingState, *request, result)) {
return false;
}
if (!checkIndexConstraints(txn, &shardingState, *request, result)) {
return false;
}
_context.reset(new Client::Context(request->getNS(),
false /* don't check version */));
Database* database = _context->db();
dassert(database);
_collection = database->getCollection(txn, request->getTargetingNS());
if (!_collection) {
// Implicitly create if it doesn't exist
_collection = database->createCollection(txn, request->getTargetingNS());
if (!_collection) {
result->setError(
toWriteError(Status(ErrorCodes::InternalError,
"could not create collection " +
request->getTargetingNS())));
return false;
}
}
return true;
}
QWSLock::~QWSLock()
{
#ifndef QT_NO_QWS_SIGNALHANDLER
QWSSignalHandler::instance()->removeWSLock(this);
#endif
if (semId != -1) {
#ifndef QT_POSIX_IPC
qt_semun semval;
semval.val = 0;
semctl(semId, 0, IPC_RMID, semval);
semId = -1;
#else
// emulate the SEM_UNDO behavior for the BackingStore lock
while (hasLock(BackingStore))
unlock(BackingStore);
QByteArray pfx = "/qwslock_" + QByteArray::number(semId, 16) + '_';
QByteArray keys[3] = { pfx + "BackingStore", pfx + "Communication", pfx + "RegionEvent" };
for (int i = 0; i < 3; ++i) {
if (sems[i] != SEM_FAILED) {
sem_close(sems[i]);
sems[i] = SEM_FAILED;
}
if (owned)
sem_unlink(keys[i].constData());
}
#endif
}
}
bool WriteBatchExecutor::ExecInsertsState::_lockAndCheckImpl(WriteOpResult* result) {
if (hasLock()) {
txn->getCurOp()->enter(_context.get());
return true;
}
invariant(!_context.get());
_writeLock.reset(new Lock::DBLock(txn->lockState(),
nsToDatabase(request->getNS()),
newlm::MODE_X));
if (!checkIsMasterForDatabase(request->getNS(), result)) {
return false;
}
if (!checkShardVersion(txn, &shardingState, *request, result)) {
return false;
}
if (!checkIndexConstraints(txn, &shardingState, *request, result)) {
return false;
}
_context.reset(new Client::Context(txn, request->getNS(), false));
Database* database = _context->db();
dassert(database);
_collection = database->getCollection(txn, request->getTargetingNS());
if (!_collection) {
WriteUnitOfWork wunit (txn);
// Implicitly create if it doesn't exist
_collection = database->createCollection(txn, request->getTargetingNS());
if (!_collection) {
result->setError(
toWriteError(Status(ErrorCodes::InternalError,
"could not create collection " +
request->getTargetingNS())));
return false;
}
repl::logOp(txn,
"c",
(database->name() + ".$cmd").c_str(),
BSON("create" << nsToCollectionSubstring(request->getTargetingNS())));
wunit.commit();
}
return true;
}
void NetInfo::adquireLock(const NetInfo* ni) {
pthread_mutex_lock(&mutex);
while (hasLock(ni)) pthread_cond_wait(&condVar, &mutex);
locks.push_back(ni);
pthread_mutex_unlock(&mutex);
}