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Overview
| Comment: | Fix a bad assert related to snapshots. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | snapshot-get |
| Files: | files | file ages | folders |
| SHA1: |
767ee30efa5dd469e3a51d4e44cbe473 |
| User & Date: | drh 2015-12-11 01:22:22 |
Context
|
2015-12-11
| ||
| 03:16 | Fix a variable type mismatch problem in the snapshot logic. (check-in: 93fb8010 user: drh tags: snapshot-get) | |
| 01:22 | Fix a bad assert related to snapshots. (check-in: 767ee30e user: drh tags: snapshot-get) | |
|
2015-12-10
| ||
| 22:48 | Snapshot documentation updates. Comment changes only - no changes to code. (check-in: ef51a398 user: drh tags: snapshot-get) | |
Changes
Changes to src/wal.c.
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**
** (2) A checkpoint as been attempted that wrote frames past
** pSnapshot->mxFrame into the database file. Note that the
** checkpoint need not have completed for this to cause problems.
*/
volatile WalCkptInfo *pInfo = walCkptInfo(pWal);
assert( pWal->readLock>0 );
assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame );
/* It is possible that there is a checkpointer thread running
** concurrent with this code. If this is the case, it may be that the
** checkpointer has already determined that it will checkpoint
** snapshot X, where X is later in the wal file than pSnapshot, but
** has not yet set the pInfo->nBackfillAttempted variable to indicate
|
| |
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**
** (2) A checkpoint as been attempted that wrote frames past
** pSnapshot->mxFrame into the database file. Note that the
** checkpoint need not have completed for this to cause problems.
*/
volatile WalCkptInfo *pInfo = walCkptInfo(pWal);
assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 );
assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame );
/* It is possible that there is a checkpointer thread running
** concurrent with this code. If this is the case, it may be that the
** checkpointer has already determined that it will checkpoint
** snapshot X, where X is later in the wal file than pSnapshot, but
** has not yet set the pInfo->nBackfillAttempted variable to indicate
|