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Overview
| Comment: | If the checkpoint fails to obtain an exclusive lock on one of the read-lock bytes, do not consider this an error. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | wal-incr-ckpt |
| Files: | files | file ages | folders |
| SHA1: |
9e95e35728cf69a0ae50e774d7f6c71a |
| User & Date: | dan 2010-06-01 10:44:29 |
Context
|
2010-06-01
| ||
| 11:08 | Do not hold the shared-memory mutex in os_unix.c if returning NULL. check-in: 9622dd46 user: dan tags: wal-incr-ckpt | |
| 10:44 | If the checkpoint fails to obtain an exclusive lock on one of the read-lock bytes, do not consider this an error. check-in: 9e95e357 user: dan tags: wal-incr-ckpt | |
| 07:51 | Fixes to the test cases in wal2.test. check-in: cd5fbcbc user: dan tags: wal-incr-ckpt | |
Changes
Changes to src/wal.c.
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 |
pHdr = (volatile WalIndexHdr*)pWal->pWiData;
pInfo = (volatile WalCkptInfo*)&pHdr[2];
assert( pInfo==walCkptInfo(pWal) );
for(i=1; i<WAL_NREADER; i++){
u32 y = pInfo->aReadMark[i];
if( y>0 && (mxSafeFrame==0 || mxSafeFrame>=y) ){
if( y<=pWal->hdr.mxFrame
&& (rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1))==SQLITE_OK
){
pInfo->aReadMark[i] = 0;
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
}else{
mxSafeFrame = y-1;
}
}
|
| |
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 |
pHdr = (volatile WalIndexHdr*)pWal->pWiData;
pInfo = (volatile WalCkptInfo*)&pHdr[2];
assert( pInfo==walCkptInfo(pWal) );
for(i=1; i<WAL_NREADER; i++){
u32 y = pInfo->aReadMark[i];
if( y>0 && (mxSafeFrame==0 || mxSafeFrame>=y) ){
if( y<=pWal->hdr.mxFrame
&& walLockExclusive(pWal, WAL_READ_LOCK(i), 1)==SQLITE_OK
){
pInfo->aReadMark[i] = 0;
walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
}else{
mxSafeFrame = y-1;
}
}
|