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Merge in the blocking-checkpoint enhancement, including the new

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sqlite3_wal_checkpoint_v2() interface and the
PRAGMA wal_checkpoint(full) statement.

FossilOrigin-Name: bac7342c368a7c4f5f2878e08d9581dcbf57dd58
This commit is contained in:
drh
2011-02-02 16:34:08 +00:00
parent 4185db9007 27f9aba18c
commit 87fa53ee8d
23 changed files with 806 additions and 121 deletions
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20
src/pragma.c
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@@ -1386,13 +1386,29 @@ void sqlite3Pragma(
#ifndef SQLITE_OMIT_WAL
/*
** PRAGMA [database.]wal_checkpoint
** PRAGMA [database.]wal_checkpoint = passive|full|restart
**
** Checkpoint the database.
*/
if( sqlite3StrICmp(zLeft, "wal_checkpoint")==0 ){
int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED);
int eMode = SQLITE_CHECKPOINT_PASSIVE;
if( zRight ){
if( sqlite3StrICmp(zRight, "full")==0 ){
eMode = SQLITE_CHECKPOINT_FULL;
}else if( sqlite3StrICmp(zRight, "restart")==0 ){
eMode = SQLITE_CHECKPOINT_RESTART;
}
}
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
sqlite3VdbeAddOp3(v, OP_Checkpoint, pId2->z?iDb:SQLITE_MAX_ATTACHED, 0, 0);
sqlite3VdbeSetNumCols(v, 3);
pParse->nMem = 3;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC);
sqlite3VdbeAddOp2(v, OP_Checkpoint, iBt, eMode);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}else
/*