328   u32 mxFrame;                    /* Index of last valid frame in the WAL */  member
1078   testcase( pWal->hdr.mxFrame==HASHTABLE_NPAGE_ONE-1 );  in walCleanupHash()
1079   testcase( pWal->hdr.mxFrame==HASHTABLE_NPAGE_ONE );  in walCleanupHash()
1080   testcase( pWal->hdr.mxFrame==HASHTABLE_NPAGE_ONE+1 );  in walCleanupHash()
1082   if( pWal->hdr.mxFrame==0 ) return;  in walCleanupHash()
1088   assert( pWal->nWiData>walFramePage(pWal->hdr.mxFrame) );  in walCleanupHash()
1089   assert( pWal->apWiData[walFramePage(pWal->hdr.mxFrame)] );  in walCleanupHash()
1090   i = walHashGet(pWal, walFramePage(pWal->hdr.mxFrame), &sLoc);  in walCleanupHash()
1096   iLimit = pWal->hdr.mxFrame - sLoc.iZero;  in walCleanupHash()
1347           pWal->hdr.mxFrame = iFrame;  in walIndexRecover()
1407     pInfo->nBackfillAttempted = pWal->hdr.mxFrame;  in walIndexRecover()
1412         if( i==1 && pWal->hdr.mxFrame ){  in walIndexRecover()
1413           pInfo->aReadMark[i] = pWal->hdr.mxFrame;  in walIndexRecover()
1431           pWal->hdr.mxFrame, pWal->zWalName  in walIndexRecover()
1792   assert( pWal->ckptLock && pWal->hdr.mxFrame>0 );  in walIteratorInit()
1793   iLast = pWal->hdr.mxFrame;  in walIteratorInit()
1993   pWal->hdr.mxFrame = 0;  in walRestartHdr()
2058   if( pInfo->nBackfill<pWal->hdr.mxFrame ){  in walCheckpoint()
2069     mxSafeFrame = pWal->hdr.mxFrame;  in walCheckpoint()
2074         assert( y<=pWal->hdr.mxFrame );  in walCheckpoint()
2114           if( (nSize+65536+(i64)pWal->hdr.mxFrame*szPage)<nReq ){  in walCheckpoint()
2151         if( mxSafeFrame==walIndexHdr(pWal)->mxFrame ){  in walCheckpoint()
2182     if( pInfo->nBackfill<pWal->hdr.mxFrame ){  in walCheckpoint()
2187       assert( pInfo->nBackfill==pWal->hdr.mxFrame );  in walCheckpoint()
2588     rc = (pWal->hdr.mxFrame==0 ? SQLITE_OK : WAL_RETRY);  in walBeginShmUnreliable()
2622   for(iOffset=walFrameOffset(pWal->hdr.mxFrame+1, pWal->szPage);   in walBeginShmUnreliable()
2716   u32 mxFrame;                    /* Wal frame to lock to */  in walTryBeginRead()  local
2791   if( !useWal && AtomicLoad(&pInfo->nBackfill)==pWal->hdr.mxFrame  in walTryBeginRead()
2793    && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0)  in walTryBeginRead()
2833   mxFrame = pWal->hdr.mxFrame;  in walTryBeginRead()
2835   if( pWal->pSnapshot && pWal->pSnapshot->mxFrame<mxFrame ){  in walTryBeginRead()
2836     mxFrame = pWal->pSnapshot->mxFrame;  in walTryBeginRead()
2841     if( mxReadMark<=thisMark && thisMark<=mxFrame ){  in walTryBeginRead()
2848    && (mxReadMark<mxFrame || mxI==0)  in walTryBeginRead()
2853         AtomicStore(pInfo->aReadMark+i,mxFrame);  in walTryBeginRead()
2854         mxReadMark = mxFrame;  in walTryBeginRead()
2914     assert( mxReadMark<=pWal->hdr.mxFrame );  in walTryBeginRead()
3072       assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 );  in sqlite3WalBeginReadTransaction()
3073       assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame );  in sqlite3WalBeginReadTransaction()
3082        && pSnapshot->mxFrame>=pInfo->nBackfillAttempted  in sqlite3WalBeginReadTransaction()
3141   u32 iLast = pWal->hdr.mxFrame;  /* Last page in WAL for this reader */  in sqlite3WalFindFrame()
3353     Pgno iMax = pWal->hdr.mxFrame;  in sqlite3WalUndo()
3361     for(iFrame=pWal->hdr.mxFrame+1;   in sqlite3WalUndo()
3379     if( iMax!=pWal->hdr.mxFrame ) walCleanupHash(pWal);  in sqlite3WalUndo()
3392   aWalData[0] = pWal->hdr.mxFrame;  in sqlite3WalSavepoint()
3408   assert( aWalData[3]!=pWal->nCkpt || aWalData[0]<=pWal->hdr.mxFrame );  in sqlite3WalSavepointUndo()
3419   if( aWalData[0]<pWal->hdr.mxFrame ){  in sqlite3WalSavepointUndo()
3420     pWal->hdr.mxFrame = aWalData[0];  in sqlite3WalSavepointUndo()
3447     assert( pInfo->nBackfill==pWal->hdr.mxFrame );  in walRestartLog()
3633               pWal, cnt, pWal->hdr.mxFrame, isCommit ? "Commit" : "Spill"));  in sqlite3WalFrames()
3639     iFirst = pLive->mxFrame+1;  in sqlite3WalFrames()
3653   iFrame = pWal->hdr.mxFrame;  in sqlite3WalFrames()
3798   iFrame = pWal->hdr.mxFrame;  in sqlite3WalFrames()
3816     pWal->hdr.mxFrame = iFrame;  in sqlite3WalFrames()
3923     if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){  in sqlite3WalCheckpoint()
3931       if( pnLog ) *pnLog = (int)pWal->hdr.mxFrame;  in sqlite3WalCheckpoint()
4094   if( pHdr1->mxFrame<pHdr2->mxFrame ) return -1;  in sqlite3_snapshot_cmp()
4095   if( pHdr1->mxFrame>pHdr2->mxFrame ) return +1;  in sqlite3_snapshot_cmp()
4116      || pNew->mxFrame<walCkptInfo(pWal)->nBackfillAttempted  in sqlite3WalSnapshotCheck()