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Overview
Comment:Fix a problem in vdbesort.c to do with caching unpacked records.
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Timelines: family | ancestors | descendants | both | sorter-opt
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SHA1: 80a00539506c95443165a781d1d869205057ca6c
User & Date: dan 2015-04-02 09:06:21.116
Context
2015-04-10
08:20
Update this branch with latest trunk changes. (check-in: 60be9c1c1a user: dan tags: sorter-opt)
2015-04-02
09:06
Fix a problem in vdbesort.c to do with caching unpacked records. (check-in: 80a0053950 user: dan tags: sorter-opt)
2015-04-01
18:22
Merge latest trunk changes with this branch. (check-in: 4621b2eef8 user: dan tags: sorter-opt)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/vdbesort.c.
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      ** is sorted from oldest to newest, so pReadr1 contains older values
      ** than pReadr2 iff (pReadr1<pReadr2).  */
      if( iRes<0 || (iRes==0 && pReadr1<pReadr2) ){
        pMerger->aTree[i] = (int)(pReadr1 - pMerger->aReadr);
        pReadr2 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ];
        bCached = 0;
      }else{
        bCached = (pReadr1->pFd!=0);
        pMerger->aTree[i] = (int)(pReadr2 - pMerger->aReadr);
        pReadr1 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ];
      }
    }
    *pbEof = (pMerger->aReadr[pMerger->aTree[1]].pFd==0);
  }









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      ** is sorted from oldest to newest, so pReadr1 contains older values
      ** than pReadr2 iff (pReadr1<pReadr2).  */
      if( iRes<0 || (iRes==0 && pReadr1<pReadr2) ){
        pMerger->aTree[i] = (int)(pReadr1 - pMerger->aReadr);
        pReadr2 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ];
        bCached = 0;
      }else{
        if( pReadr1->pFd ) bCached = 0;
        pMerger->aTree[i] = (int)(pReadr2 - pMerger->aReadr);
        pReadr1 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ];
      }
    }
    *pbEof = (pMerger->aReadr[pMerger->aTree[1]].pFd==0);
  }
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