C++ (Cpp) key_gen_init Examples

Example #1

void
bdb_open(void)
{
	DB *db;
	DBC *dbc;
	DB_ENV *dbenv;

	assert(db_env_create(&dbenv, 0) == 0);
	dbenv->set_errpfx(dbenv, "bdb");
	dbenv->set_errfile(dbenv, stderr);
	assert(dbenv->mutex_set_max(dbenv, 10000) == 0);
	assert(dbenv->set_cachesize(dbenv, 0, 50 * 1024 * 1024, 1) == 0);
	assert(dbenv->open(dbenv, NULL,
	    DB_CREATE | DB_INIT_LOCK | DB_INIT_MPOOL | DB_PRIVATE, 0) == 0);
	assert(db_create(&db, dbenv, 0) == 0);

	if (g.c_reverse)
		assert(db->set_bt_compare(db, bdb_compare_reverse) == 0);

	assert(db->open(
	    db, NULL, g.home_bdb, NULL, DB_BTREE, DB_CREATE, 0) == 0);
	g.bdb = db;
	assert(db->cursor(db, NULL, &dbc, 0) == 0);
	g.dbc = dbc;

	key_gen_init(&keyitem);
}

Example #2

File: bulk.c Project: wiredtiger/wiredtiger

void
wts_load(void)
{
	WT_CONNECTION *conn;
	WT_CURSOR *cursor;
	WT_DECL_RET;
	WT_ITEM key, value;
	WT_SESSION *session;
	bool is_bulk;

	conn = g.wts_conn;

	testutil_check(conn->open_session(conn, NULL, NULL, &session));

	if (g.logging != 0)
		(void)g.wt_api->msg_printf(g.wt_api, session,
		    "=============== bulk load start ===============");

	/*
	 * No bulk load with data-sources.
	 *
	 * No bulk load with custom collators, the order of insertion will not
	 * match the collation order.
	 */
	is_bulk = true;
	if (DATASOURCE("kvsbdb"))
		is_bulk = false;
	if (g.c_reverse)
		is_bulk = false;

	/*
	 * open_cursor can return EBUSY if concurrent with a metadata
	 * operation, retry in that case.
	 */
	while ((ret = session->open_cursor(session, g.uri, NULL,
	    is_bulk ? "bulk,append" : NULL, &cursor)) == EBUSY)
		__wt_yield();
	testutil_check(ret);

	/* Set up the key/value buffers. */
	key_gen_init(&key);
	val_gen_init(&value);

	for (;;) {
		if (++g.key_cnt > g.c_rows) {
			g.key_cnt = g.rows = g.c_rows;
			break;
		}

		/* Report on progress every 100 inserts. */
		if (g.key_cnt % 1000 == 0)
			track("bulk load", g.key_cnt, NULL);

		key_gen(&key, g.key_cnt);
		val_gen(NULL, &value, g.key_cnt);

		switch (g.type) {
		case FIX:
			if (!is_bulk)
				cursor->set_key(cursor, g.key_cnt);
			cursor->set_value(cursor, *(uint8_t *)value.data);
			if (g.logging == LOG_OPS)
				(void)g.wt_api->msg_printf(g.wt_api, session,
				    "%-10s %" PRIu64 " {0x%02" PRIx8 "}",
				    "bulk V",
				    g.key_cnt, ((uint8_t *)value.data)[0]);
			break;
		case VAR:
			if (!is_bulk)
				cursor->set_key(cursor, g.key_cnt);
			cursor->set_value(cursor, &value);
			if (g.logging == LOG_OPS)
				(void)g.wt_api->msg_printf(g.wt_api, session,
				    "%-10s %" PRIu64 " {%.*s}", "bulk V",
				    g.key_cnt,
				    (int)value.size, (char *)value.data);
			break;
		case ROW:
			cursor->set_key(cursor, &key);
			if (g.logging == LOG_OPS)
				(void)g.wt_api->msg_printf(g.wt_api, session,
				    "%-10s %" PRIu64 " {%.*s}", "bulk K",
				    g.key_cnt, (int)key.size, (char *)key.data);
			cursor->set_value(cursor, &value);
			if (g.logging == LOG_OPS)
				(void)g.wt_api->msg_printf(g.wt_api, session,
				    "%-10s %" PRIu64 " {%.*s}", "bulk V",
				    g.key_cnt,
				    (int)value.size, (char *)value.data);
			break;
		}

		/*
		 * We don't want to size the cache to ensure the initial data
		 * set can load in the in-memory case, guaranteeing the load
		 * succeeds probably means future updates are also guaranteed
		 * to succeed, which isn't what we want. If we run out of space
		 * in the initial load, reset the row counter and continue.
		 *
		 * Decrease inserts, they can't be successful if we're at the
		 * cache limit, and increase the delete percentage to get some
		 * extra space once the run starts.
		 */
		if ((ret = cursor->insert(cursor)) != 0) {
			if (ret != WT_CACHE_FULL)
				testutil_die(ret, "cursor.insert");
			g.rows = --g.key_cnt;
			g.c_rows = (uint32_t)g.key_cnt;

			if (g.c_insert_pct > 5)
				g.c_insert_pct = 5;
			if (g.c_delete_pct < 20)
				g.c_delete_pct += 20;
			break;
		}

#ifdef HAVE_BERKELEY_DB
		if (SINGLETHREADED)
			bdb_insert(key.data, key.size, value.data, value.size);
#endif
	}

	testutil_check(cursor->close(cursor));

	if (g.logging != 0)
		(void)g.wt_api->msg_printf(g.wt_api, session,
		    "=============== bulk load stop ===============");

	testutil_check(session->close(session, NULL));

	key_gen_teardown(&key);
	val_gen_teardown(&value);
}