SQLite

Check-in [c978aed3b6]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Enhance sqlite3BtreeSetPageSize() so that it detects early if no changes are needed and exists with SQLITE_OK.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | trunk
Files: files | file ages | folders
SHA3-256: c978aed3b6f82b3d9d2e0ca0283c611351bca5e5496e86a9d5d0731ebcd27c84
User & Date: drh 2025-06-20 13:12:55.485
Context
2025-06-20
13:12
Enhance sqlite3BtreeSetPageSize() so that it detects early if no changes are needed and exists with SQLITE_OK. (Leaf check-in: c978aed3b6 user: drh tags: trunk)
2025-06-19
20:19
Fix an out-of-order local variable declaration in ext/misc/fileio.c. (check-in: a88bb75288 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/btree.c.
︙︙
3070
3071
3072
3073
3074
3075
3076




3077
3078
3079
3080
3081
3082
3083

  int rc = SQLITE_OK;
  int x;
  BtShared *pBt = p->pBt;
  assert( nReserve>=0 && nReserve<=255 );
  sqlite3BtreeEnter(p);
  pBt->nReserveWanted = (u8)nReserve;
  x = pBt->pageSize - pBt->usableSize;




  if( nReserve<x ) nReserve = x;
  if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
    sqlite3BtreeLeave(p);
    return SQLITE_READONLY;
  }
  assert( nReserve>=0 && nReserve<=255 );
  if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE &&








>
>
>
>








3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087

  int rc = SQLITE_OK;
  int x;
  BtShared *pBt = p->pBt;
  assert( nReserve>=0 && nReserve<=255 );
  sqlite3BtreeEnter(p);
  pBt->nReserveWanted = (u8)nReserve;
  x = pBt->pageSize - pBt->usableSize;
  if( x==nReserve && (pageSize==0 || pageSize==pBt->pageSize) ){
    sqlite3BtreeLeave(p);
    return SQLITE_OK;
  }
  if( nReserve<x ) nReserve = x;
  if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
    sqlite3BtreeLeave(p);
    return SQLITE_READONLY;
  }
  assert( nReserve>=0 && nReserve<=255 );
  if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE &&
︙︙