Add the SQLITE_FCNTL_RESET_CACHE verb. Use it to ensure that the page cache is purged before and after a the recovery extension is run.

FossilOrigin-Name: 6db0bc4bc0d272b610bef2aeeae43f539ed6e7cc0a9cc767d5af85ecb0019d5f

1 files changed, 11 insertions, 0 deletions

diff --git a/src/btree.c b/src/btree.c
index cabcf675e..c949001b8 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -11083,6 +11083,17 @@ int sqlite3BtreeIsReadonly(Btree *p){
 */
 int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); }
 
+/*
+** If no transaction is active and the database is not a temp-db, clear
+** the in-memory pager cache.
+*/
+void sqlite3BtreeClearCache(Btree *p){
+  BtShared *pBt = p->pBt;
+  if( pBt->inTransaction==TRANS_NONE ){
+    sqlite3PagerClearCache(pBt->pPager);
+  }
+}
+
 #if !defined(SQLITE_OMIT_SHARED_CACHE)
 /*
 ** Return true if the Btree passed as the only argument is sharable.