#define SQLITE_CHECKPOINT_PASSIVE 0 /* Do as much as possible w/o blocking */ #define SQLITE_CHECKPOINT_FULL 1 /* Wait for writers, then checkpoint */ #define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for readers */ #define SQLITE_CHECKPOINT_TRUNCATE 3 /* Like RESTART but also truncate WAL */
這些常數定義了所有有效的「檢查點模式」值,作為第三個參數傳遞給 sqlite3_wal_checkpoint_v2() 介面。有關每個檢查點模式含義的詳細資訊,請參閱 sqlite3_wal_checkpoint_v2() 文件。