contrib/sqlite3/sqlite3.c

24717 ** free.  The first block has format u.hdr.  u.hdr.size4x is 4 times the
24719 ** The u.hdr.size4x&1 bit is true if the chunk is checked out and
24720 ** false if the chunk is on the freelist.  The u.hdr.size4x&2 bit
24748       u32 size4x;     /* 4x the size of current chunk in Mem3Block elements */
24833   assert( (mem3.aPool[i-1].u.hdr.size4x & 1)==0 );
24835   size = mem3.aPool[i-1].u.hdr.size4x/4;
24868   assert( (mem3.aPool[i-1].u.hdr.size4x & 1)==0 );
24869   size = mem3.aPool[i-1].u.hdr.size4x/4;
24919   assert( mem3.aPool[i-1].u.hdr.size4x/4==nBlock );
24921   x = mem3.aPool[i-1].u.hdr.size4x;
24922   mem3.aPool[i-1].u.hdr.size4x = nBlock*4 | 1 | (x&2);
24924   mem3.aPool[i+nBlock-1].u.hdr.size4x |= 2;
24949     mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x |= 2;
24950     mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1;
24953     x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
24954     mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
24984     size = mem3.aPool[i-1].u.hdr.size4x;
24995       x = mem3.aPool[prev-1].u.hdr.size4x & 2;
24996       mem3.aPool[prev-1].u.hdr.size4x = size*4 | x;
25045       if( mem3.aPool[i-1].u.hdr.size4x/4==nBlock ){
25106   assert( (mem3.aPool[i-1].u.hdr.size4x&1)==1 );
25107   size = mem3.aPool[i-1].u.hdr.size4x/4;
25109   mem3.aPool[i-1].u.hdr.size4x &= ~1;
25111   mem3.aPool[i+size-1].u.hdr.size4x &= ~2;
25116     while( (mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x&2)==0 ){
25121       x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
25122       mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
25125     x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
25126     while( (mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x&1)==0 ){
25128       mem3.szKeyBlk += mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x/4;
25129       mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
25144   assert( (pBlock[-1].u.hdr.size4x&1)!=0 );
25145   return (pBlock[-1].u.hdr.size4x&~3)*2 - 4;
25230   mem3.aPool[0].u.hdr.size4x = (mem3.szKeyBlk<<2) + 2;
25232   mem3.aPool[mem3.nPool].u.hdr.size4x = 1;
25270     size = mem3.aPool[i-1].u.hdr.size4x;
25281     if( ((mem3.aPool[i+size/4-1].u.hdr.size4x&2)>>1)!=(size&1) ){
25298               (mem3.aPool[j-1].u.hdr.size4x/4)*8-8);
25307               (mem3.aPool[j-1].u.hdr.size4x/4)*8-8);