lib/sqlite/sqlite3.c

15751 static void *memsys3Checkout(u32 i, u32 nBlock){
15755   assert( mem3.aPool[i-1].u.hdr.size4x/4==nBlock );
15756   assert( mem3.aPool[i+nBlock-1].u.hdr.prevSize==nBlock );
15758   mem3.aPool[i-1].u.hdr.size4x = nBlock*4 | 1 | (x&2);
15759   mem3.aPool[i+nBlock-1].u.hdr.prevSize = nBlock;
15760   mem3.aPool[i+nBlock-1].u.hdr.size4x |= 2;
15769 static void *memsys3FromMaster(u32 nBlock){
15771   assert( mem3.szMaster>=nBlock );
15772   if( nBlock>=mem3.szMaster-1 ){
15782     newi = mem3.iMaster + mem3.szMaster - nBlock;
15784     mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = nBlock;
15786     mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1;
15787     mem3.szMaster -= nBlock;
15855   u32 nBlock;
15861     nBlock = 2;
15863     nBlock = (nByte + 11)/8;
15865   assert( nBlock>=2 );
15872   if( nBlock <= MX_SMALL ){
15873     i = mem3.aiSmall[nBlock-2];
15875       memsys3UnlinkFromList(i, &mem3.aiSmall[nBlock-2]);
15876       return memsys3Checkout(i, nBlock);
15879     int hash = nBlock % N_HASH;
15881       if( mem3.aPool[i-1].u.hdr.size4x/4==nBlock ){
15883         return memsys3Checkout(i, nBlock);
15892   if( mem3.szMaster>=nBlock ){
15893     return memsys3FromMaster(nBlock);
15904   for(toFree=nBlock*16; toFree<(mem3.nPool*16); toFree *= 2){
15919       if( mem3.szMaster>=nBlock ){
15920         return memsys3FromMaster(nBlock);
16285   int nBlock;      /* Number of szAtom sized blocks in zPool */
16337   assert( i>=0 && i<mem5.nBlock );
16360   assert( i>=0 && i<mem5.nBlock );
16367     assert( x<mem5.nBlock );
16394     assert( i>=0 && i<mem5.nBlock );
16501   assert( iBlock>=0 && iBlock<mem5.nBlock );
16507   assert( iBlock+size-1<(u32)mem5.nBlock );
16527     if( (iBuddy+(1<<iLogsize))>mem5.nBlock ) break;
16671   mem5.nBlock = (nByte / (mem5.szAtom+sizeof(u8)));
16673   mem5.aCtrl = (u8 *)&mem5.zPool[mem5.nBlock*mem5.szAtom];
16682     if( (iOffset+nAlloc)<=mem5.nBlock ){
16687     assert((iOffset+nAlloc)>mem5.nBlock);