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Overview
| Comment: | Fix a math error when computing how much memory to allocate for a new pager. (CVS 4812) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
690d05cedae236251778a71fdd323198 |
| User & Date: | drh 2008-02-26 18:40:12 |
Context
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2008-02-27
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| 03:22 | Add bitvec.lo to LIBOBJS and corresponding make rule (CVS 4813) check-in: 1d68f3af user: mlcreech tags: trunk | |
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2008-02-26
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| 18:40 | Fix a math error when computing how much memory to allocate for a new pager. (CVS 4812) check-in: 690d05ce user: drh tags: trunk | |
| 16:16 | Add commentary to clarify what is happening when an I/O error occurs while writing dirty pages to the database file. (CVS 4811) check-in: afe49d81 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 1.411 2008/02/26 16:16:45 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include <assert.h> #include <string.h> /* ................................................................................ } nPathname = strlen(zPathname); /* Allocate memory for the pager structure */ pPager = sqlite3MallocZero( sizeof(*pPager) + /* Pager structure */ journalFileSize + /* The journal file structure */ pVfs->szOsFile * 2 + /* The db and stmt journal files */ 4*nPathname + 40 /* zFilename, zDirectory, zJournal, zStmtJrnl */ ); if( !pPager ){ sqlite3_free(zPathname); return SQLITE_NOMEM; } pPtr = (u8 *)&pPager[1]; |
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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 1.412 2008/02/26 18:40:12 drh Exp $ */ #ifndef SQLITE_OMIT_DISKIO #include "sqliteInt.h" #include <assert.h> #include <string.h> /* ................................................................................ } nPathname = strlen(zPathname); /* Allocate memory for the pager structure */ pPager = sqlite3MallocZero( sizeof(*pPager) + /* Pager structure */ journalFileSize + /* The journal file structure */ pVfs->szOsFile * 3 + /* The main db and two journal files */ 4*nPathname + 40 /* zFilename, zDirectory, zJournal, zStmtJrnl */ ); if( !pPager ){ sqlite3_free(zPathname); return SQLITE_NOMEM; } pPtr = (u8 *)&pPager[1]; |