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Overview
Comment: | nMax can be zero and subtracting 1 from an unsigned zero produces undesirable results (CVS 6506) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
a117d82dad82bc372bc1e3f1adb9540c |
User & Date: | aswift 2009-04-14 18:44:39.000 |
Context
2009-04-15
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13:07 | Disable the temptrigger.test test script when shared cache is disabled. Ticket #3801. (CVS 6507) (check-in: feedbce8f1 user: drh tags: trunk) | |
2009-04-14
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18:44 | nMax can be zero and subtracting 1 from an unsigned zero produces undesirable results (CVS 6506) (check-in: a117d82dad user: aswift tags: trunk) | |
12:58 | Change the sqlite3_bind_value() implementation to use a default branch on the type switch so that there are no untested jumps in the switch. (CVS 6505) (check-in: d0a8bd6a53 user: drh tags: trunk) | |
Changes
Changes to src/pcache1.c.
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12 13 14 15 16 17 18 | ** ** This file implements the default page cache implementation (the ** sqlite3_pcache interface). It also contains part of the implementation ** of the SQLITE_CONFIG_PAGECACHE and sqlite3_release_memory() features. ** If the default page cache implementation is overriden, then neither of ** these two features are available. ** | | | 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | ** ** This file implements the default page cache implementation (the ** sqlite3_pcache interface). It also contains part of the implementation ** of the SQLITE_CONFIG_PAGECACHE and sqlite3_release_memory() features. ** If the default page cache implementation is overriden, then neither of ** these two features are available. ** ** @(#) $Id: pcache1.c,v 1.11 2009/04/14 18:44:39 aswift Exp $ */ #include "sqliteInt.h" typedef struct PCache1 PCache1; typedef struct PgHdr1 PgHdr1; typedef struct PgFreeslot PgFreeslot; |
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523 524 525 526 527 528 529 | if( pCache->nPage>=pCache->nHash && pcache1ResizeHash(pCache) ){ goto fetch_out; } /* Step 4. Try to recycle a page buffer if appropriate. */ if( pCache->bPurgeable && pcache1.pLruTail && ( | | | 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 | if( pCache->nPage>=pCache->nHash && pcache1ResizeHash(pCache) ){ goto fetch_out; } /* Step 4. Try to recycle a page buffer if appropriate. */ if( pCache->bPurgeable && pcache1.pLruTail && ( (pCache->nPage+1>=pCache->nMax) || pcache1.nCurrentPage>=pcache1.nMaxPage )){ pPage = pcache1.pLruTail; pcache1RemoveFromHash(pPage); pcache1PinPage(pPage); if( pPage->pCache->szPage!=pCache->szPage ){ pcache1FreePage(pPage); pPage = 0; |
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