internal static RC sqlite3BtreeIncrVacuum(Btree p)
{
var pBt = p.Shared;
p.sqlite3BtreeEnter();
Debug.Assert(pBt.InTransaction == TRANS.WRITE && p.InTransaction == TRANS.WRITE);
RC rc;
if (!pBt.AutoVacuum)
{
rc = RC.DONE;
}
else
{
Btree.invalidateAllOverflowCache(pBt);
rc = incrVacuumStep(pBt, 0, pBt.btreePagecount());
if (rc == RC.OK)
{
rc = Pager.Write(pBt.Page1.DbPage);
ConvertEx.Put4(pBt.Page1.Data, 28, pBt.Pages);
}
}
p.sqlite3BtreeLeave();
return(rc);
}
// was:sqlite3BtreeClose
public static RC Close(ref Btree p)
{
// Close all cursors opened via this handle.
Debug.Assert(MutexEx.Held(p.DB.Mutex));
p.sqlite3BtreeEnter();
var shared = p.Shared;
var cursor = shared.Cursors;
while (cursor != null)
{
var lastCursor = cursor;
cursor = cursor.Next;
if (lastCursor.Tree == p)
lastCursor.Close();
}
// Rollback any active transaction and free the handle structure. The call to sqlite3BtreeRollback() drops any table-locks held by this handle.
p.Rollback();
p.sqlite3BtreeLeave();
// If there are still other outstanding references to the shared-btree structure, return now. The remainder of this procedure cleans up the shared-btree.
Debug.Assert(p.WantToLock == 0 && !p.Locked);
if (!p.Sharable || shared.removeFromSharingList())
{
// The pBt is no longer on the sharing list, so we can access it without having to hold the mutex.
// Clean out and delete the BtShared object.
Debug.Assert(shared.Cursors == null);
shared.Pager.Close();
if (shared.xFreeSchema != null && shared.Schema != null)
shared.xFreeSchema(shared.Schema);
shared.Schema = null;// sqlite3DbFree(0, pBt->pSchema);
//freeTempSpace(pBt);
shared = null; //sqlite3_free(ref pBt);
}
#if !SQLITE_OMIT_SHARED_CACHE
Debug.Assert(p.WantToLock == 0);
Debug.Assert(p.Locked == false);
if (p.Prev != null) p.Prev.Next = p.Next;
if (p.Next != null) p.Next.Prev = p.Prev;
#endif
return RC.OK;
}
// was:sqlite3BtreeClose
public static RC Close(ref Btree p)
{
// Close all cursors opened via this handle.
Debug.Assert(MutexEx.Held(p.DB.Mutex));
p.sqlite3BtreeEnter();
var shared = p.Shared;
var cursor = shared.Cursors;
while (cursor != null)
{
var lastCursor = cursor;
cursor = cursor.Next;
if (lastCursor.Tree == p)
lastCursor.Close();
}
// Rollback any active transaction and free the handle structure. The call to sqlite3BtreeRollback() drops any table-locks held by this handle.
p.Rollback();
p.sqlite3BtreeLeave();
// If there are still other outstanding references to the shared-btree structure, return now. The remainder of this procedure cleans up the shared-btree.
Debug.Assert(p.WantToLock == 0 && !p.Locked);
if (!p.Sharable || shared.removeFromSharingList())
{
// The pBt is no longer on the sharing list, so we can access it without having to hold the mutex.
// Clean out and delete the BtShared object.
Debug.Assert(shared.Cursors == null);
shared.Pager.Close();
if (shared.xFreeSchema != null && shared.Schema != null)
shared.xFreeSchema(shared.Schema);
shared.Schema = null;// sqlite3DbFree(0, pBt->pSchema);
//freeTempSpace(pBt);
shared = null; //sqlite3_free(ref pBt);
}
#if !SQLITE_OMIT_SHARED_CACHE
Debug.Assert(p.WantToLock == 0);
Debug.Assert(p.Locked == false);
if (p.Prev != null) p.Prev.Next = p.Next;
if (p.Next != null) p.Next.Prev = p.Prev;
#endif
return RC.OK;
}
internal static RC sqlite3BtreeIncrVacuum(Btree p)
{
var pBt = p.Shared;
p.sqlite3BtreeEnter();
Debug.Assert(pBt.InTransaction == TRANS.WRITE && p.InTransaction == TRANS.WRITE);
RC rc;
if (!pBt.AutoVacuum)
rc = RC.DONE;
else
{
Btree.invalidateAllOverflowCache(pBt);
rc = incrVacuumStep(pBt, 0, pBt.btreePagecount());
if (rc == RC.OK)
{
rc = Pager.Write(pBt.Page1.DbPage);
ConvertEx.Put4(pBt.Page1.Data, 28, pBt.Pages);
}
}
p.sqlite3BtreeLeave();
return rc;
}
