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Add the sqlite3rbu_state() API. Used to determine the current state (creating OAL, ready to move OAL, incremental-checkpoint, finished or error) of an RBU operation.

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FossilOrigin-Name: 92e7df0ff5c4c118c63d92a767dc82700438a310
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dan
2016-07-01 12:39:58 +00:00
parent 05d1bad674
commit e336b8914c
8 changed files with 182 additions and 94 deletions
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38
ext/rbu/sqlite3rbu.h
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@ -474,6 +474,44 @@ sqlite3_int64 sqlite3rbu_progress(sqlite3rbu *pRbu);
*/
void sqlite3rbu_bp_progress(sqlite3rbu *pRbu, int *pnOne, int *pnTwo);
/*
** Obtain an indication as to the current stage of an RBU update or vacuum.
** This function always returns one of the SQLITE_RBU_STATE_XXX constants
** defined in this file. Return values should be interpreted as follows:
**
** SQLITE_RBU_STATE_OAL:
** RBU is currently building a *-oal file. The next call to sqlite3rbu_step()
** may either add further data to the *-oal file, or compute data that will
** be added by a subsequent call.
**
** SQLITE_RBU_STATE_MOVE:
** RBU has finished building the *-oal file. The next call to sqlite3rbu_step()
** will move the *-oal file to the equivalent *-wal path. If the current
** operation is an RBU update, then the updated version of the database
** file will become visible to ordinary SQLite clients following the next
** call to sqlite3rbu_step().
**
** SQLITE_RBU_STATE_CHECKPOINT:
** RBU is currently performing an incremental checkpoint. The next call to
** sqlite3rbu_step() will copy a page of data from the *-wal file into
** the target database file.
**
** SQLITE_RBU_STATE_DONE:
** The RBU operation has finished. Any subsequent calls to sqlite3rbu_step()
** will immediately return SQLITE_DONE.
**
** SQLITE_RBU_STATE_ERROR:
** An error has occurred. Any subsequent calls to sqlite3rbu_step() will
** immediately return the SQLite error code associated with the error.
*/
#define SQLITE_RBU_STATE_OAL 1
#define SQLITE_RBU_STATE_MOVE 2
#define SQLITE_RBU_STATE_CHECKPOINT 3
#define SQLITE_RBU_STATE_DONE 4
#define SQLITE_RBU_STATE_ERROR 5
int sqlite3rbu_state(sqlite3rbu *pRbu);
/*
** Create an RBU VFS named zName that accesses the underlying file-system
** via existing VFS zParent. Or, if the zParent parameter is passed NULL,