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Overview
Comment: | Move the PENDING_PAGE to a very large value if disk I/O is omitted. (CVS 3135) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
f07181739f82b0d23f934f51b97e67c3 |
User & Date: | drh 2006-03-14 12:59:10.000 |
Context
2006-03-14
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13:10 | Set and clear the full_column_name flag using direct invocation rather than the execsql tcl command so that the select1 test works with the serialized statement extension. (CVS 3136) (check-in: 4d70013a6a user: drh tags: trunk) | |
12:59 | Move the PENDING_PAGE to a very large value if disk I/O is omitted. (CVS 3135) (check-in: f07181739f user: drh tags: trunk) | |
11:08 | Make sure sqlite3FindCollSeq() returns NULL after a malloc() failure. (CVS 3134) (check-in: 0e05355f3c 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 1.320 2006/03/14 12:59:10 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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465 466 467 468 469 470 471 472 | /* #define getVarint32 sqlite3GetVarint32 */ #define getVarint32(A,B) ((*B=*(A))<=0x7f?1:sqlite3GetVarint32(A,B)) #define putVarint sqlite3PutVarint /* The database page the PENDING_BYTE occupies. This page is never used. ** TODO: This macro is very similary to PAGER_MJ_PGNO() in pager.c. They ** should possibly be consolidated (presumably in pager.h). */ | > > > > > > | > | 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 | /* #define getVarint32 sqlite3GetVarint32 */ #define getVarint32(A,B) ((*B=*(A))<=0x7f?1:sqlite3GetVarint32(A,B)) #define putVarint sqlite3PutVarint /* The database page the PENDING_BYTE occupies. This page is never used. ** TODO: This macro is very similary to PAGER_MJ_PGNO() in pager.c. They ** should possibly be consolidated (presumably in pager.h). ** ** If disk I/O is omitted (meaning that the database is stored purely ** in memory) then there is no pending byte. */ #ifdef SQLITE_OMIT_DISKIO # define PENDING_BYTE_PAGE(pBt) 0x7fffffff #else # define PENDING_BYTE_PAGE(pBt) ((PENDING_BYTE/(pBt)->pageSize)+1) #endif /* ** A linked list of the following structures is stored at BtShared.pLock. ** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor ** is opened on the table with root page BtShared.iTable. Locks are removed ** from this list when a transaction is committed or rolled back, or when ** a btree handle is closed. |
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