void IDBTransactionBackendImpl::taskTimerFired(Timer<IDBTransactionBackendImpl>*)
{
IDB_TRACE("IDBTransactionBackendImpl::taskTimerFired");
ASSERT(!isTaskQueueEmpty());
if (m_state == StartPending) {
m_transaction.begin();
m_state = Running;
}
// The last reference to this object may be released while performing the
// tasks. Take take a self reference to keep this object alive so that
// the loop termination conditions can be checked.
RefPtr<IDBTransactionBackendImpl> protect(this);
TaskQueue* taskQueue = m_pendingPreemptiveEvents ? &m_preemptiveTaskQueue : &m_taskQueue;
while (!taskQueue->isEmpty() && m_state != Finished) {
ASSERT(m_state == Running);
OwnPtr<Operation> task(taskQueue->takeFirst());
task->perform(this);
// Event itself may change which queue should be processed next.
taskQueue = m_pendingPreemptiveEvents ? &m_preemptiveTaskQueue : &m_taskQueue;
}
// If there are no pending tasks, we haven't already committed/aborted,
// and the front-end requested a commit, it is now safe to do so.
if (!hasPendingTasks() && m_state != Finished && m_commitPending)
commit();
}
void IDBTransactionBackendImpl::taskTimerFired(Timer<IDBTransactionBackendImpl>*)
{
IDB_TRACE("IDBTransactionBackendImpl::taskTimerFired");
ASSERT(!isTaskQueueEmpty());
if (m_state == StartPending) {
m_transaction->begin();
m_state = Running;
}
TaskQueue* taskQueue = m_pendingPreemptiveEvents ? &m_preemptiveTaskQueue : &m_taskQueue;
while (!taskQueue->isEmpty() && m_state != Finished) {
ASSERT(m_state == Running);
OwnPtr<ScriptExecutionContext::Task> task(taskQueue->takeFirst());
m_pendingEvents++;
task->performTask(0);
// Event itself may change which queue should be processed next.
taskQueue = m_pendingPreemptiveEvents ? &m_preemptiveTaskQueue : &m_taskQueue;
}
}