// was:sqlite3PagerSavepoint
public RC Savepoint(SAVEPOINT op, int iSavepoint)
{
var rc = this.errCode;
Debug.Assert(op == SAVEPOINT.RELEASE || op == SAVEPOINT.ROLLBACK);
Debug.Assert(iSavepoint >= 0 || op == SAVEPOINT.ROLLBACK);
if (rc == RC.OK && iSavepoint < this.nSavepoint)
{
// Figure out how many savepoints will still be active after this operation. Store this value in nNew. Then free resources associated
// with any savepoints that are destroyed by this operation.
var nNew = iSavepoint + ((op == SAVEPOINT.RELEASE) ? 0 : 1); // Number of remaining savepoints after this op.
for (var ii = nNew; ii < this.nSavepoint; ii++)
{
BitArray.Destroy(ref this.aSavepoint[ii].pInSavepoint);
}
this.nSavepoint = nNew;
// If this is a release of the outermost savepoint, truncate the sub-journal to zero bytes in size.
if (op == SAVEPOINT.RELEASE)
{
if (nNew == 0 && this.sjfd.IsOpen)
{
// Only truncate if it is an in-memory sub-journal.
if (this.sjfd is MemJournalFile)
{
rc = this.sjfd.Truncate(0);
Debug.Assert(rc == RC.OK);
}
this.nSubRec = 0;
}
// Else this is a rollback operation, playback the specified savepoint. If this is a temp-file, it is possible that the journal file has
// not yet been opened. In this case there have been no changes to the database file, so the playback operation can be skipped.
else if (pagerUseWal() || this.jfd.IsOpen)
{
var pSavepoint = (nNew == 0 ? (PagerSavepoint)null : this.aSavepoint[nNew - 1]);
rc = pagerPlaybackSavepoint(pSavepoint);
Debug.Assert(rc != RC.DONE);
}
}
}
return(rc);
}
// was:sqlite3PagerSavepoint
public RC Savepoint(SAVEPOINT op, int iSavepoint)
{
var rc = this.errCode;
Debug.Assert(op == SAVEPOINT.RELEASE || op == SAVEPOINT.ROLLBACK);
Debug.Assert(iSavepoint >= 0 || op == SAVEPOINT.ROLLBACK);
if (rc == RC.OK && iSavepoint < this.nSavepoint)
{
// Figure out how many savepoints will still be active after this operation. Store this value in nNew. Then free resources associated
// with any savepoints that are destroyed by this operation.
var nNew = iSavepoint + ((op == SAVEPOINT.RELEASE) ? 0 : 1); // Number of remaining savepoints after this op.
for (var ii = nNew; ii < this.nSavepoint; ii++)
BitArray.Destroy(ref this.aSavepoint[ii].pInSavepoint);
this.nSavepoint = nNew;
// If this is a release of the outermost savepoint, truncate the sub-journal to zero bytes in size.
if (op == SAVEPOINT.RELEASE)
if (nNew == 0 && this.sjfd.IsOpen)
{
// Only truncate if it is an in-memory sub-journal.
if (this.sjfd is MemJournalFile)
{
rc = this.sjfd.Truncate(0);
Debug.Assert(rc == RC.OK);
}
this.nSubRec = 0;
}
// Else this is a rollback operation, playback the specified savepoint. If this is a temp-file, it is possible that the journal file has
// not yet been opened. In this case there have been no changes to the database file, so the playback operation can be skipped.
else if (pagerUseWal() || this.jfd.IsOpen)
{
var pSavepoint = (nNew == 0 ? (PagerSavepoint)null : this.aSavepoint[nNew - 1]);
rc = pagerPlaybackSavepoint(pSavepoint);
Debug.Assert(rc != RC.DONE);
}
}
return rc;
}
