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Overview
| Comment: | Preliminary fix for ticket #2518. Make sure the VACUUM command increments the change counter. (CVS 4163) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
75263797e29af437290c09e85cd5fd2a |
| User & Date: | drh 2007-07-19 16:35:17 |
Context
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2007-07-19
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| 22:30 | Disable tests that use the progress handler when the progress handler is disabled at compile-time. Followup to ticket #2497. (CVS 4164) (check-in: cbc56fd4 user: drh tags: trunk) | |
| 16:35 | Preliminary fix for ticket #2518. Make sure the VACUUM command increments the change counter. (CVS 4163) (check-in: 75263797 user: drh tags: trunk) | |
| 12:41 | Clarify the documentation on the nByte parameter to sqlite3_prepare(). Make it clear that nByte is a maximum string length. Ticket #2516. (CVS 4162) (check-in: d1ae3de4 user: drh tags: trunk) | |
Changes
Changes to src/pager.c.
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** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: pager.c,v 1.349 2007/06/26 22:10:12 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include "os.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ if( !pPager->changeCountDone ){ /* Open page 1 of the file for writing. */ rc = sqlite3PagerGet(pPager, 1, &pPgHdr); if( rc!=SQLITE_OK ) return rc; rc = sqlite3PagerWrite(pPgHdr); if( rc!=SQLITE_OK ) return rc; /* Read the current value at byte 24. */ change_counter = retrieve32bits(pPgHdr, 24); /* Increment the value just read and write it back to byte 24. */ change_counter++; put32bits(((char*)PGHDR_TO_DATA(pPgHdr))+24, change_counter); /* Release the page reference. */ sqlite3PagerUnref(pPgHdr); pPager->changeCountDone = 1; } return SQLITE_OK; |
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** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: pager.c,v 1.350 2007/07/19 16:35:17 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include "os.h" #include "pager.h" #include <assert.h> #include <string.h> ................................................................................ if( !pPager->changeCountDone ){ /* Open page 1 of the file for writing. */ rc = sqlite3PagerGet(pPager, 1, &pPgHdr); if( rc!=SQLITE_OK ) return rc; rc = sqlite3PagerWrite(pPgHdr); if( rc!=SQLITE_OK ) return rc; /* Increment the value just read and write it back to byte 24. */ change_counter = sqlite3Get4byte(pPager->dbFileVers); change_counter++; put32bits(((char*)PGHDR_TO_DATA(pPgHdr))+24, change_counter); /* Release the page reference. */ sqlite3PagerUnref(pPgHdr); pPager->changeCountDone = 1; } return SQLITE_OK; |
Changes to test/vacuum2.test.
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# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing the VACUUM statement. # # $Id: vacuum2.test,v 1.2 2006/01/16 16:24:25 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # If the VACUUM statement is disabled in the current build, skip all # the tests in this file. # ................................................................................ do_test vacuum2-1.1 { execsql { CREATE TABLE t1(x INTEGER PRIMARY KEY AUTOINCREMENT, y); DROP TABLE t1; VACUUM; } } {} finish_test |
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# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing the VACUUM statement. # # $Id: vacuum2.test,v 1.3 2007/07/19 16:35:17 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # If the VACUUM statement is disabled in the current build, skip all # the tests in this file. # ................................................................................ do_test vacuum2-1.1 { execsql { CREATE TABLE t1(x INTEGER PRIMARY KEY AUTOINCREMENT, y); DROP TABLE t1; VACUUM; } } {} # Ticket #2518. Make sure vacuum increments the change counter # in the database header. # do_test vacuum2-2.1 { execsql { CREATE TABLE t1(x); CREATE TABLE t2(y); INSERT INTO t1 VALUES(1); } hexio_get_int [hexio_read test.db 24 4] } [expr {[hexio_get_int [hexio_read test.db 24 4]]+3}] do_test vacuum2-2.1 { execsql { VACUUM } hexio_get_int [hexio_read test.db 24 4] } [expr {[hexio_get_int [hexio_read test.db 24 4]]+1}] finish_test |