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Overview
Comment: | Work around a bug in the Borland C++ compiler. Ticket #881. (CVS 1927) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
18af6ba580a5ad50a20955bfe2ebce8e |
User & Date: | drh 2004-09-01 16:12:25.000 |
Context
2004-09-02
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14:57 | Transactions commit on the last sqlite3_step(), not on sqlite3_finalize(). This allows the sqlite3_step() to return SQLITE_BUSY if the commit is blocked by a lock. Ticket #885. (CVS 1928) (check-in: d1b2915655 user: drh tags: trunk) | |
2004-09-01
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16:12 | Work around a bug in the Borland C++ compiler. Ticket #881. (CVS 1927) (check-in: 18af6ba580 user: drh tags: trunk) | |
03:06 | Optimizations on the SELECT code generator. (CVS 1926) (check-in: 9c411c3c8d user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
1 2 3 4 5 6 7 8 9 10 11 | /* ** 2004 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* | | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | /* ** 2004 April 6 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.185 2004/09/01 16:12:25 drh Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** For a detailed discussion of BTrees, refer to ** ** Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3: ** "Sorting And Searching", pages 473-480. Addison-Wesley ** Publishing Company, Reading, Massachusetts. |
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344 345 346 347 348 349 350 351 352 353 354 355 356 357 | MemPage *pPage; /* Page that contains the entry */ int idx; /* Index of the entry in pPage->aCell[] */ CellInfo info; /* A parse of the cell we are pointing at */ u8 wrFlag; /* True if writable */ u8 isValid; /* TRUE if points to a valid entry */ u8 status; /* Set to SQLITE_ABORT if cursors is invalidated */ }; /* ** Read or write a two- and four-byte big-endian integer values. */ static u32 get2byte(unsigned char *p){ return (p[0]<<8) | p[1]; } | > > > > > > | 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 | MemPage *pPage; /* Page that contains the entry */ int idx; /* Index of the entry in pPage->aCell[] */ CellInfo info; /* A parse of the cell we are pointing at */ u8 wrFlag; /* True if writable */ u8 isValid; /* TRUE if points to a valid entry */ u8 status; /* Set to SQLITE_ABORT if cursors is invalidated */ }; /* ** Forward declaration */ static int checkReadLocks(Btree*,Pgno,BtCursor*); /* ** Read or write a two- and four-byte big-endian integer values. */ static u32 get2byte(unsigned char *p){ return (p[0]<<8) | p[1]; } |
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1556 1557 1558 1559 1560 1561 1562 | BtCursor **ppCur /* Write new cursor here */ ){ int rc; BtCursor *pCur; *ppCur = 0; if( wrFlag ){ | < | 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 | BtCursor **ppCur /* Write new cursor here */ ){ int rc; BtCursor *pCur; *ppCur = 0; if( wrFlag ){ if( pBt->readOnly ){ return SQLITE_READONLY; } if( checkReadLocks(pBt, iTable, 0) ){ return SQLITE_LOCKED; } } |
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