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Overview
| Comment: | Add asserts to btree.c that check for the correct size of various typedefs and structures. Ticket #233. (CVS 845) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | c7e647d011b086a6e57420850f6bc4f2 |
| User & Date: | drh 2003-01-24 12:14:20 |
Context
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2003-01-25
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| 14:25 | Update the speed.html documentation. Recent optimizations have made the library much faster. (CVS 846) check-in: ed47d162 user: drh tags: trunk | |
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2003-01-24
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| 12:14 | Add asserts to btree.c that check for the correct size of various typedefs and structures. Ticket #233. (CVS 845) check-in: c7e647d0 user: drh tags: trunk | |
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2003-01-22
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| 01:26 | Minor refinements to the pager. (CVS 844) check-in: 19221dee user: drh tags: trunk | |
Changes
Changes to src/btree.c.
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** 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 1.80 2003/01/05 21:41:41 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. ................................................................................ int omitJournal, /* if TRUE then do not journal this file */ int nCache, /* How many pages in the page cache */ Btree **ppBtree /* Pointer to new Btree object written here */ ){ Btree *pBt; int rc; pBt = sqliteMalloc( sizeof(*pBt) ); if( pBt==0 ){ *ppBtree = 0; return SQLITE_NOMEM; } if( nCache<10 ) nCache = 10; rc = sqlitepager_open(&pBt->pPager, zFilename, nCache, EXTRA_SIZE, |
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** 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 1.81 2003/01/24 12:14:20 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. ................................................................................ int omitJournal, /* if TRUE then do not journal this file */ int nCache, /* How many pages in the page cache */ Btree **ppBtree /* Pointer to new Btree object written here */ ){ Btree *pBt; int rc; /* ** The following asserts make sure that structures used by the btree are ** the right size. This is to guard against size changes that result ** when compiling on a different architecture. */ assert( sizeof(u32)==4 ); assert( sizeof(u16)==2 ); assert( sizeof(Pgno)==4 ); assert( sizeof(PageHdr)==8 ); assert( sizeof(CellHdr)==12 ); assert( sizeof(FreeBlk)==4 ); assert( sizeof(OverflowPage)==SQLITE_PAGE_SIZE ); assert( sizeof(FreelistInfo)==OVERFLOW_SIZE ); assert( sizeof(ptr)==sizeof(char*) ); assert( sizeof(uptr)==sizeof(ptr) ); pBt = sqliteMalloc( sizeof(*pBt) ); if( pBt==0 ){ *ppBtree = 0; return SQLITE_NOMEM; } if( nCache<10 ) nCache = 10; rc = sqlitepager_open(&pBt->pPager, zFilename, nCache, EXTRA_SIZE, |