Function TRA_attach_request

src/jrd/tra.cpp:202–228

void TRA_attach_request(Jrd::jrd_tra* transaction, Jrd::Request* request)
{
	// When request finishes normally transaction reference is not cleared.
	// Then if afterwards request is restarted TRA_attach_request is called again.
	if (request->req_transaction)
	{
		if (request->req_transaction == transaction)
			return;
		TRA_detach_request(request);
	}

	fb_assert(request->req_transaction == NULL);
	fb_assert(request->req_tra_next == NULL);
	fb_assert(request->req_tra_prev == NULL);

	// Assign transaction reference
	request->req_transaction = transaction;

	// Add request to the doubly linked list
	if (transaction->tra_requests)
	{
		fb_assert(transaction->tra_requests->req_tra_prev == NULL);
		transaction->tra_requests->req_tra_prev = request;
		request->req_tra_next = transaction->tra_requests;
	}
	transaction->tra_requests = request;
}

void TRA_detach_request(Jrd::Request* request)
{