begin_shard.h (1806B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 /** 17 * @file src/include/exchange-database/begin_shard.h 18 * @brief implementation of the begin_shard function for Postgres 19 * @author Christian Grothoff 20 */ 21 #ifndef EXCHANGE_DATABASE_BEGIN_SHARD_H 22 #define EXCHANGE_DATABASE_BEGIN_SHARD_H 23 24 #include "exchangedb_lib.h" 25 26 /** 27 * Function called to grab a work shard on an operation @a op. Runs in its 28 * own transaction. 29 * 30 * @param pg the database context 31 * @param job_name name of the operation to grab a word shard for 32 * @param delay minimum age of a shard to grab 33 * @param shard_size desired shard size 34 * @param[out] start_row inclusive start row of the shard (returned) 35 * @param[out] end_row exclusive end row of the shard (returned) 36 * @return transaction status code 37 */ 38 enum GNUNET_DB_QueryStatus 39 TALER_EXCHANGEDB_begin_shard (struct TALER_EXCHANGEDB_PostgresContext *pg, 40 const char *job_name, 41 struct GNUNET_TIME_Relative delay, 42 uint64_t shard_size, 43 uint64_t *start_row, 44 uint64_t *end_row); 45 46 #endif