static void
insert_locations (GtkTreeStore *store, GWeatherLocation *loc)
{
int i;
if (gweather_location_get_level (loc) < GWEATHER_LOCATION_COUNTRY) {
GWeatherLocation **children;
children = gweather_location_get_children (loc);
for (i = 0; children[i]; i++)
insert_locations (store, children[i]);
} else {
GWeatherTimezone **zones;
GtkTreeIter iter;
zones = gweather_location_get_timezones (loc);
if (zones[1]) {
gtk_tree_store_append (store, &iter, NULL);
gtk_tree_store_set (store, &iter,
GWEATHER_TIMEZONE_MENU_NAME, gweather_location_get_name (loc),
-1);
for (i = 0; zones[i]; i++) {
insert_location (store, zones[i], NULL, &iter);
}
} else if (zones[0]) {
insert_location (store, zones[0], gweather_location_get_name (loc), NULL);
}
gweather_location_free_timezones (loc, zones);
}
}
void form_location_insert(char *input) {
Location *location;
Client *client;
location = location_malloc();
location->id = insert_location(location);
printf("\n=======\nLOCANDO: \n\n");
// Definir cliente
do {
printf("> A qual cliente quer locar? ");
client = form_client_select(input);
} while (client->id == NON_EXIST);
puts_client(client);
// Tem certeza?
if (!be_sure(input)) {
printf("Abortando locacao.\n\n");
erase_location(location);
free(location);
return;
}
location->id_client = client->id;
free(client);
// Definir filmes
if (form_items_insert(location, input) < 1) {
free(location);
erase_location(location);
printf("Voce precisa inserir algum filme a locacao. Abortando locacao.\n\n");
return;
}
// Imprimir resultado geral
printf("\n>>>> SUMARIO DA LOCACAO <<<< \n\n");
puts_location(location, TRUE);
printf("-------------------------------------\n\n");
if (update_location(location)) {
printf("Locacao foi um sucesso.\n");
} else {
printf("Locacao nao foi completada corretamente!\n");
}
printf("\n=======\n");
free(location);
}
static GtkTreeModel *
gweather_timezone_model_new (GWeatherLocation *top)
{
GtkTreeStore *store;
GtkTreeModel *model;
GtkTreeIter iter;
char *unknown;
GWeatherTimezone *utc;
store = gtk_tree_store_new (2, G_TYPE_STRING, GWEATHER_TYPE_TIMEZONE);
model = GTK_TREE_MODEL (store);
unknown = g_markup_printf_escaped ("<i>%s</i>", C_("timezone", "Unknown"));
gtk_tree_store_append (store, &iter, NULL);
gtk_tree_store_set (store, &iter,
GWEATHER_TIMEZONE_MENU_NAME, unknown,
GWEATHER_TIMEZONE_MENU_ZONE, NULL,
-1);
utc = gweather_timezone_get_utc ();
if (utc) {
insert_location (store, utc, NULL, NULL);
gweather_timezone_unref (utc);
}
gtk_tree_store_append (store, &iter, NULL);
g_free (unknown);
if (!top)
top = gweather_location_get_world ();
insert_locations (store, top);
return model;
}
Result PessimisticTxnManager::CommitTransaction() {
LOG_TRACE("Committing peloton txn : %lu ", current_txn->GetTransactionId());
auto &manager = catalog::Manager::GetInstance();
auto &rw_set = current_txn->GetRWSet();
//*****************************************************
// we can optimize read-only transaction.
if (current_txn->IsReadOnly() == true) {
// validate read set.
for (auto &tile_group_entry : rw_set) {
oid_t tile_group_id = tile_group_entry.first;
auto tile_group = manager.GetTileGroup(tile_group_id);
auto tile_group_header = tile_group->GetHeader();
for (auto &tuple_entry : tile_group_entry.second) {
auto tuple_slot = tuple_entry.first;
// if this tuple is not newly inserted.
if (tuple_entry.second == RW_TYPE_READ) {
// Release read locks
if (pessimistic_released_rdlock.find(tile_group_id) ==
pessimistic_released_rdlock.end() ||
pessimistic_released_rdlock[tile_group_id].find(tuple_slot) ==
pessimistic_released_rdlock[tile_group_id].end()) {
ReleaseReadLock(tile_group_header, tuple_slot);
pessimistic_released_rdlock[tile_group_id].insert(tuple_slot);
}
} else {
assert(tuple_entry.second == RW_TYPE_INS_DEL);
}
}
}
// is it always true???
Result ret = current_txn->GetResult();
EndTransaction();
return ret;
}
//*****************************************************
// generate transaction id.
cid_t end_commit_id = GetNextCommitId();
auto &log_manager = logging::LogManager::GetInstance();
log_manager.LogBeginTransaction(end_commit_id);
// install everything.
for (auto &tile_group_entry : rw_set) {
oid_t tile_group_id = tile_group_entry.first;
auto tile_group = manager.GetTileGroup(tile_group_id);
auto tile_group_header = tile_group->GetHeader();
for (auto &tuple_entry : tile_group_entry.second) {
auto tuple_slot = tuple_entry.first;
if (tuple_entry.second == RW_TYPE_READ) {
// Release read locks
if (pessimistic_released_rdlock.find(tile_group_id) ==
pessimistic_released_rdlock.end() ||
pessimistic_released_rdlock[tile_group_id].find(tuple_slot) ==
pessimistic_released_rdlock[tile_group_id].end()) {
ReleaseReadLock(tile_group_header, tuple_slot);
pessimistic_released_rdlock[tile_group_id].insert(tuple_slot);
}
} else if (tuple_entry.second == RW_TYPE_UPDATE) {
// we must guarantee that, at any time point, only one version is
// visible.
ItemPointer new_version =
tile_group_header->GetNextItemPointer(tuple_slot);
ItemPointer old_version(tile_group_id, tuple_slot);
// logging.
log_manager.LogUpdate(current_txn, end_commit_id, old_version,
new_version);
auto new_tile_group_header =
manager.GetTileGroup(new_version.block)->GetHeader();
new_tile_group_header->SetEndCommitId(new_version.offset, MAX_CID);
new_tile_group_header->SetBeginCommitId(new_version.offset,
end_commit_id);
COMPILER_MEMORY_FENCE;
tile_group_header->SetEndCommitId(tuple_slot, end_commit_id);
COMPILER_MEMORY_FENCE;
new_tile_group_header->SetTransactionId(new_version.offset,
INITIAL_TXN_ID);
tile_group_header->SetTransactionId(tuple_slot, INITIAL_TXN_ID);
} else if (tuple_entry.second == RW_TYPE_DELETE) {
ItemPointer new_version =
tile_group_header->GetNextItemPointer(tuple_slot);
ItemPointer delete_location(tile_group_id, tuple_slot);
// logging.
log_manager.LogDelete(end_commit_id, delete_location);
// we do not change begin cid for old tuple.
auto new_tile_group_header =
manager.GetTileGroup(new_version.block)->GetHeader();
new_tile_group_header->SetEndCommitId(new_version.offset, MAX_CID);
new_tile_group_header->SetBeginCommitId(new_version.offset,
end_commit_id);
COMPILER_MEMORY_FENCE;
tile_group_header->SetEndCommitId(tuple_slot, end_commit_id);
COMPILER_MEMORY_FENCE;
new_tile_group_header->SetTransactionId(new_version.offset,
INVALID_TXN_ID);
tile_group_header->SetTransactionId(tuple_slot, INITIAL_TXN_ID);
} else if (tuple_entry.second == RW_TYPE_INSERT) {
assert(tile_group_header->GetTransactionId(tuple_slot) ==
current_txn->GetTransactionId());
// set the begin commit id to persist insert
ItemPointer insert_location(tile_group_id, tuple_slot);
log_manager.LogInsert(current_txn, end_commit_id, insert_location);
tile_group_header->SetEndCommitId(tuple_slot, MAX_CID);
tile_group_header->SetBeginCommitId(tuple_slot, end_commit_id);
COMPILER_MEMORY_FENCE;
tile_group_header->SetTransactionId(tuple_slot, INITIAL_TXN_ID);
} else if (tuple_entry.second == RW_TYPE_INS_DEL) {
assert(tile_group_header->GetTransactionId(tuple_slot) ==
current_txn->GetTransactionId());
tile_group_header->SetEndCommitId(tuple_slot, MAX_CID);
tile_group_header->SetBeginCommitId(tuple_slot, MAX_CID);
COMPILER_MEMORY_FENCE;
// set the begin commit id to persist insert
tile_group_header->SetTransactionId(tuple_slot, INVALID_TXN_ID);
}
}
}
log_manager.LogCommitTransaction(end_commit_id);
EndTransaction();
pessimistic_released_rdlock.clear();
return Result::RESULT_SUCCESS;
}
