database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-14 00:22:38 +03:00
Code Activity

The fullfsync, checkpoint_fullfsync, and cache_spill pragmas apply to all

Browse Source 
files of a database connection, including those opened by future ATTACH
statements.

FossilOrigin-Name: d07c4331a28d44deca1ece8a34118f5b121b3ee2
This commit is contained in:
drh
2013-08-17 15:42:29 +00:00
parent d4b5c60eca
commit d3605a4f20
5 changed files with 65 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
src/pragma.c
View File

@@ -158,6 +158,34 @@ static void returnSingleInt(Parse *pParse, const char *zLabel, i64 value){
sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1);
}
/*
** Set the safety_level and pager flags for pager iDb. Or if iDb<0
** set these values for all pagers.
*/
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
static void setAllPagerFlags(sqlite3 *db){
if( db->autoCommit ){
Db *pDb = db->aDb;
int n = db->nDb;
assert( SQLITE_FullFSync==PAGER_FULLFSYNC );
assert( SQLITE_CkptFullFSync==PAGER_CKPT_FULLFSYNC );
assert( SQLITE_CacheSpill==PAGER_CACHESPILL );
assert( (PAGER_FULLFSYNC | PAGER_CKPT_FULLFSYNC | PAGER_CACHESPILL)
== PAGER_FLAGS_MASK );
assert( (pDb->safety_level & PAGER_SYNCHRONOUS_MASK)==pDb->safety_level );
while( (n--) > 0 ){
if( pDb->pBt ){
sqlite3BtreeSetPagerFlags(pDb->pBt,
pDb->safety_level | (db->flags & PAGER_FLAGS_MASK) );
}
pDb++;
}
}
}
#endif
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
/*
** Check to see if zRight and zLeft refer to a pragma that queries
@@ -967,6 +995,7 @@ void sqlite3Pragma(
"Safety level may not be changed inside a transaction");
}else{
pDb->safety_level = getSafetyLevel(zRight,0,1)+1;
setAllPagerFlags(db);
}
}
}else
@@ -974,8 +1003,7 @@ void sqlite3Pragma(
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
if( flagPragma(pParse, zLeft, zRight) ){
/* The flagPragma() subroutine also generates any necessary code
** there is nothing more to do here */
setAllPagerFlags(db);
}else
#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
@@ -1806,22 +1834,6 @@ void sqlite3Pragma(
{/* Empty ELSE clause */}
/*
** Reset the safety level, in case the fullfsync flag or synchronous
** setting changed.
*/
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
if( db->autoCommit ){
assert( (pDb->safety_level & PAGER_SYNCHRONOUS_MASK)==pDb->safety_level );
assert( SQLITE_FullFSync==PAGER_FULLFSYNC );
assert( SQLITE_CkptFullFSync==PAGER_CKPT_FULLFSYNC );
assert( SQLITE_CacheSpill==PAGER_CACHESPILL );
assert( (PAGER_FULLFSYNC | PAGER_CKPT_FULLFSYNC | PAGER_CACHESPILL)
== PAGER_FLAGS_MASK );
sqlite3BtreeSetPagerFlags(pDb->pBt,
pDb->safety_level | (db->flags & PAGER_FLAGS_MASK) );
}
#endif
pragma_out:
sqlite3DbFree(db, zLeft);
sqlite3DbFree(db, zRight);