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Overview
| Comment: | Remove a harmless UMR that occurs inside some debugging code. (CVS 6190) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
191c399fc6354b35477ec21f685377e2 |
| User & Date: | drh 2009-01-16 23:47:42 |
Context
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2009-01-17
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| 15:53 | Back out the Makefile.in changes from check-in (6181) because of reports (ticket #3594) that they do not work on NetBSD. Separately, documentation is updated to make clear that configure and Makefile.in are unsupported. (CVS 6191) check-in: 2d79aaab user: drh tags: trunk | |
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2009-01-16
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| 23:47 | Remove a harmless UMR that occurs inside some debugging code. (CVS 6190) check-in: 191c399f user: drh tags: trunk | |
| 16:40 | Fix a change-counter bug similar to #3584. This one is much more obscure though, requiring a transient IO or malloc error to occur while running in exclusive mode. (CVS 6189) check-in: 9f07d2d9 user: danielk1977 tags: trunk | |
Changes
Changes to src/os_unix.c.
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** * Definitions of sqlite3_io_methods objects for all locking ** methods plus "finder" functions for each locking method. ** * sqlite3_vfs method implementations. ** * Locking primitives for the proxy uber-locking-method. (MacOSX only) ** * Definitions of sqlite3_vfs objects for all locking methods ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). ** ** $Id: os_unix.c,v 1.237 2009/01/15 04:30:03 drh Exp $ */ #include "sqliteInt.h" #if SQLITE_OS_UNIX /* This file is used on unix only */ /* ** There are various methods for file locking used for concurrency ** control: ................................................................................ ** has changed. If the transaction counter is modified, record that ** fact too. */ if( ((unixFile*)id)->inNormalWrite ){ unixFile *pFile = (unixFile*)id; pFile->dbUpdate = 1; /* The database has been modified */ if( offset<=24 && offset+amt>=27 ){ char oldCntr[4]; SimulateIOErrorBenign(1); seekAndRead(pFile, 24, oldCntr, 4); SimulateIOErrorBenign(0); if( memcmp(oldCntr, &((char*)pBuf)[24-offset], 4)!=0 ){ pFile->transCntrChng = 1; /* The transaction counter has changed */ } } } #endif while( amt>0 && (wrote = seekAndWrite((unixFile*)id, offset, pBuf, amt))>0 ){ |
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** * Definitions of sqlite3_io_methods objects for all locking ** methods plus "finder" functions for each locking method. ** * sqlite3_vfs method implementations. ** * Locking primitives for the proxy uber-locking-method. (MacOSX only) ** * Definitions of sqlite3_vfs objects for all locking methods ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). ** ** $Id: os_unix.c,v 1.238 2009/01/16 23:47:42 drh Exp $ */ #include "sqliteInt.h" #if SQLITE_OS_UNIX /* This file is used on unix only */ /* ** There are various methods for file locking used for concurrency ** control: ................................................................................ ** has changed. If the transaction counter is modified, record that ** fact too. */ if( ((unixFile*)id)->inNormalWrite ){ unixFile *pFile = (unixFile*)id; pFile->dbUpdate = 1; /* The database has been modified */ if( offset<=24 && offset+amt>=27 ){ int rc; char oldCntr[4]; SimulateIOErrorBenign(1); rc = seekAndRead(pFile, 24, oldCntr, 4); SimulateIOErrorBenign(0); if( rc!=4 || memcmp(oldCntr, &((char*)pBuf)[24-offset], 4)!=0 ){ pFile->transCntrChng = 1; /* The transaction counter has changed */ } } } #endif while( amt>0 && (wrote = seekAndWrite((unixFile*)id, offset, pBuf, amt))>0 ){ |