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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 |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c7e647d011b086a6e57420850f6bc4f2 |
| User & Date: | drh 2003-01-24 12:14:20.000 |
Context
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2003-01-25
| ||
| 14:25 | Update the speed.html documentation. Recent optimizations have made the library much faster. (CVS 846) (check-in: ed47d162a0 user: drh tags: trunk) | |
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2003-01-24
| ||
| 12:14 | Add asserts to btree.c that check for the correct size of various typedefs and structures. Ticket #233. (CVS 845) (check-in: c7e647d011 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: 19221dee5f user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
1 2 3 4 5 6 7 8 9 10 11 | /* ** 2001 September 15 ** ** 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 | /* ** 2001 September 15 ** ** 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 1.81 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. |
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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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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,
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