database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-05 15:55:57 +03:00
Code Activity

Add untested implementations of experimental APIs sqlite3_snapshot_get(), _open() and _free().

Browse Source 
FossilOrigin-Name: 0715eb00aa8891400cd50a15509d3d7b13789626
This commit is contained in:
dan
2015-12-05 20:51:54 +00:00
parent 28a6a1168b
commit fc1acf33b8
9 changed files with 320 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
src/pager.c
View File

@@ -7301,6 +7301,34 @@ int sqlite3PagerCloseWal(Pager *pPager){
return rc;
}
#ifdef SQLITE_ENABLE_SNAPSHOT
/*
** If this is a WAL database, obtain a snapshot handle for the snapshot
** currently open. Otherwise, return an error.
*/
int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot){
int rc = SQLITE_ERROR;
if( pPager->pWal ){
rc = sqlite3WalSnapshotGet(pPager->pWal, ppSnapshot);
}
return rc;
}
/*
** If this is a WAL database, store a pointer to pSnapshot. Next time a
** read transaction is opened, attempt to read from the snapshot it
** identifies. If this is not a WAL database, return an error.
*/
int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot){
int rc = SQLITE_OK;
if( pPager->pWal ){
sqlite3WalSnapshotOpen(pPager->pWal, pSnapshot);
}else{
rc = SQLITE_ERROR;
}
return rc;
}
#endif /* SQLITE_ENABLE_SNAPSHOT */
#endif /* !SQLITE_OMIT_WAL */
#ifdef SQLITE_ENABLE_ZIPVFS