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Overview
Comment: | If walLockExclusive() fails for reasons other than SQLITE_BUSY inside of walRestartLog() then propagate that error back up to the application. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
04dcba6b3379d2168609950ed919c8f7 |
User & Date: | drh 2010-10-05 15:41:06.000 |
Context
2010-10-05
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17:02 | Have the pager change to at least WRITER_CACHEMOD state before marking any pages as dirty (instead of immediately after). Otherwise, if an error occurs, the pager may be left in WRITER_LOCKED state with dirty pages in the cache. (check-in: 471a4efbb7 user: dan tags: trunk) | |
15:41 | If walLockExclusive() fails for reasons other than SQLITE_BUSY inside of walRestartLog() then propagate that error back up to the application. (check-in: 04dcba6b33 user: drh tags: trunk) | |
12:05 | Avoid all memory allocation (and hence the possiblitity of OOM failure) in sqlite3_value_double() and sqlite3_column_double(). (check-in: 4afdf9705a user: drh tags: trunk) | |
Changes
Changes to src/wal.c.
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2362 2363 2364 2365 2366 2367 2368 | ** to the current log file, it is possible to overwrite the start of the ** existing log file with the new frames (i.e. "reset" the log). If so, ** it sets pWal->hdr.mxFrame to 0. Otherwise, pWal->hdr.mxFrame is left ** unchanged. ** ** SQLITE_OK is returned if no error is encountered (regardless of whether ** or not pWal->hdr.mxFrame is modified). An SQLite error code is returned | | | 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 | ** to the current log file, it is possible to overwrite the start of the ** existing log file with the new frames (i.e. "reset" the log). If so, ** it sets pWal->hdr.mxFrame to 0. Otherwise, pWal->hdr.mxFrame is left ** unchanged. ** ** SQLITE_OK is returned if no error is encountered (regardless of whether ** or not pWal->hdr.mxFrame is modified). An SQLite error code is returned ** if an error occurs. */ static int walRestartLog(Wal *pWal){ int rc = SQLITE_OK; int cnt; if( pWal->readLock==0 ){ volatile WalCkptInfo *pInfo = walCkptInfo(pWal); |
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2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 | sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0])); sqlite3_randomness(4, &aSalt[1]); walIndexWriteHdr(pWal); pInfo->nBackfill = 0; for(i=1; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED; assert( pInfo->aReadMark[0]==0 ); walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); } } walUnlockShared(pWal, WAL_READ_LOCK(0)); pWal->readLock = -1; cnt = 0; do{ int notUsed; | > > | 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 | sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0])); sqlite3_randomness(4, &aSalt[1]); walIndexWriteHdr(pWal); pInfo->nBackfill = 0; for(i=1; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED; assert( pInfo->aReadMark[0]==0 ); walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); }else if( rc!=SQLITE_BUSY ){ return rc; } } walUnlockShared(pWal, WAL_READ_LOCK(0)); pWal->readLock = -1; cnt = 0; do{ int notUsed; |
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