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Overview
Comment:Improvements to the way mlink is computed. Some unnecessary mlink entries are suppressed. Running "fossil rebuild" is recommended.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:e2c53534b59487b1fceb850f8cfe5f791fe8dfe8
User & Date: drh 2015-12-25 00:20:29
Context
2015-12-25
02:25
Add "Related" and "Branch Only" buttons to the t= and r= query parameters for /timeline. check-in: 95335751 user: drh tags: trunk
00:20
Improvements to the way mlink is computed. Some unnecessary mlink entries are suppressed. Running "fossil rebuild" is recommended. check-in: e2c53534 user: drh tags: trunk
2015-12-24
20:50
Fix some over-length source code lines. No functional changes. check-in: 9a8d0827 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/finfo.c.

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       "SELECT"
       /* 0 */ "  datetime(event.mtime,toLocal()),"
       /* 1 */ "  (SELECT uuid FROM blob WHERE rid=mlink.mid),"
       /* 2 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 3 */ "  isaux,"
       /* 4 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 5 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 6 */ "  mperm,"

       /* 7 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid)"
       "  FROM mlink, event"
       " WHERE mlink.fnid=%d"
       "   AND event.objid=mlink.mid"
       " ORDER BY 1 DESC",
       fnid
    );
    @ <h1>MLINK table for file
................................................................................
    while( db_step(&q)==SQLITE_ROW ){
      const char *zDate = db_column_text(&q,0);
      const char *zCkin = db_column_text(&q,1);
      const char *zParent = db_column_text(&q,2);
      int isMerge = db_column_int(&q,3);
      const char *zFid = db_column_text(&q,4);
      const char *zPid = db_column_text(&q,5);
      int isExe = db_column_int(&q,6);
      const char *zPrior = db_column_text(&q,7);
      @ <tr>
      @ <td><a href='%R/timeline?c=%!S(zCkin)'>%s(zDate)</a></td>
      @ <td><a href='%R/info/%!S(zCkin)'>%S(zCkin)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
................................................................................
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>


      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExe?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{
................................................................................
    @ </div>
    output_table_sorting_javascript("mlinktable","tttxtttt",1);
  }else{
    int mid = name_to_rid_www("ci");
    db_prepare(&q,
       "SELECT"
       /* 0 */ "  (SELECT name FROM filename WHERE fnid=mlink.fnid),"
       /* 1 */ "  fid,"
       /* 2 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 3 */ "  pid,"
       /* 4 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 5 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid),"
       /* 6 */ "  pmid,"
       /* 7 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 8 */ "  mperm,"
       /* 9 */ "  isaux"
       "  FROM mlink WHERE mid=%d ORDER BY 1",
       mid
    );
    @ <h1>MLINK table for check-in %h(zCI)</h1>
    render_checkin_context(mid, 1);
    @ <hr>
    @ <div class='brlist'>
................................................................................
    @ <th>Old</th>
    @ <th>Exe Bit?</th>
    @ <th>Prior Name</th>
    @ </tr></thead>
    @ <tbody>
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q,0);
      const char *zFid = db_column_text(&q,2);
      const char *zPid = db_column_text(&q,4);
      const char *zParent = db_column_text(&q,7);
      const char *zPrior = db_column_text(&q,5);
      int isExec = db_column_int(&q,8);
      int isAux = db_column_int(&q,9);
      @ <tr>
      @ <td><a href='%R/finfo?name=%t(zName)'>%h(zName)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
      }
................................................................................
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>


      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExec?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{







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       "SELECT"
       /* 0 */ "  datetime(event.mtime,toLocal()),"
       /* 1 */ "  (SELECT uuid FROM blob WHERE rid=mlink.mid),"
       /* 2 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 3 */ "  isaux,"
       /* 4 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 5 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 6 */ "  mlink.pid,"
       /* 7 */ "  mperm,"
       /* 8 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid)"
       "  FROM mlink, event"
       " WHERE mlink.fnid=%d"
       "   AND event.objid=mlink.mid"
       " ORDER BY 1 DESC",
       fnid
    );
    @ <h1>MLINK table for file
................................................................................
    while( db_step(&q)==SQLITE_ROW ){
      const char *zDate = db_column_text(&q,0);
      const char *zCkin = db_column_text(&q,1);
      const char *zParent = db_column_text(&q,2);
      int isMerge = db_column_int(&q,3);
      const char *zFid = db_column_text(&q,4);
      const char *zPid = db_column_text(&q,5);
      int isExe = db_column_int(&q,7);
      const char *zPrior = db_column_text(&q,8);
      @ <tr>
      @ <td><a href='%R/timeline?c=%!S(zCkin)'>%s(zDate)</a></td>
      @ <td><a href='%R/info/%!S(zCkin)'>%S(zCkin)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
................................................................................
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>
      }else if( db_column_int(&q,6)<0 ){
        @ <td><i>(Added by merge)</i></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExe?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{
................................................................................
    @ </div>
    output_table_sorting_javascript("mlinktable","tttxtttt",1);
  }else{
    int mid = name_to_rid_www("ci");
    db_prepare(&q,
       "SELECT"
       /* 0 */ "  (SELECT name FROM filename WHERE fnid=mlink.fnid),"

       /* 1 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 2 */ "  pid,"
       /* 3 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 4 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid),"

       /* 5 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 6 */ "  mperm,"
       /* 7 */ "  isaux"
       "  FROM mlink WHERE mid=%d ORDER BY 1",
       mid
    );
    @ <h1>MLINK table for check-in %h(zCI)</h1>
    render_checkin_context(mid, 1);
    @ <hr>
    @ <div class='brlist'>
................................................................................
    @ <th>Old</th>
    @ <th>Exe Bit?</th>
    @ <th>Prior Name</th>
    @ </tr></thead>
    @ <tbody>
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q,0);
      const char *zFid = db_column_text(&q,1);
      const char *zPid = db_column_text(&q,3);
      const char *zPrior = db_column_text(&q,4);
      const char *zParent = db_column_text(&q,5);
      int isExec = db_column_int(&q,6);
      int isAux = db_column_int(&q,7);
      @ <tr>
      @ <td><a href='%R/finfo?name=%t(zName)'>%h(zName)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
      }
................................................................................
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>
      }else if( db_column_int(&q,2)<0 ){
        @ <td><i>(Added by merge)</i></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExec?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{

Changes to src/manifest.c.

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  }
  return mperm;
}

/*
** Add a single entry to the mlink table.  Also add the filename to
** the filename table if it is not there already.





*/
static void add_one_mlink(
  int pmid,                 /* The parent manifest */
  const char *zFromUuid,    /* UUID for content in parent */
  int mid,                  /* The record ID of the manifest */
  const char *zToUuid,      /* UUID for content in child */
  const char *zFilename,    /* Filename */
  const char *zPrior,       /* Previous filename. NULL if unchanged */
  int isPublic,             /* True if mid is not a private manifest */
  int isPrimary,            /* pmid is the primary parent of mid */
  int mperm                 /* 1: exec, 2: symlink */
){
  int fnid, pfnid, pid, fid;

  static Stmt s1;

  fnid = filename_to_fnid(zFilename);
  if( zPrior==0 ){
    pfnid = 0;
  }else{
    pfnid = filename_to_fnid(zPrior);
  }
................................................................................
  }
  if( zToUuid==0 || zToUuid[0]==0 ){
    fid = 0;
  }else{
    fid = uuid_to_rid(zToUuid, 1);
    if( isPublic ) content_make_public(fid);
  }












  db_static_prepare(&s1,
    "INSERT INTO mlink(mid,fid,pmid,pid,fnid,pfnid,mperm,isaux)"
    "VALUES(:m,:f,:pm,:p,:n,:pfn,:mp,:isaux)"
  );
  db_bind_int(&s1, ":m", mid);
  db_bind_int(&s1, ":f", fid);
  db_bind_int(&s1, ":pm", pmid);
  db_bind_int(&s1, ":p", pid);
  db_bind_int(&s1, ":n", fnid);
  db_bind_int(&s1, ":pfn", pfnid);
  db_bind_int(&s1, ":mp", mperm);
  db_bind_int(&s1, ":isaux", isPrimary==0);
  db_exec(&s1);

  if( pid && fid ){
    content_deltify(pid, fid, 0);
  }
}

/*
** Do a binary search to find a file in the p->aFile[] array.
................................................................................
** A single mlink entry is added for every file that changed content,
** name, and/or permissions going from pid to cid.
**
** Deleted files have mlink.fid=0.
** Added files have mlink.pid=0.
** File added by merge have mlink.pid=-1
** Edited files have both mlink.pid!=0 and mlink.fid!=0









*/
static void add_mlink(
  int pmid, Manifest *pParent,  /* Parent check-in */
  int mid,  Manifest *pChild,   /* The child check-in */
  int isPrim                    /* TRUE if pmid is the primary parent of mid */
){
  Blob otherContent;
................................................................................
    if( *ppOther==0 ) return;
  }
  if( fetch_baseline(pParent, 0) || fetch_baseline(pChild, 0) ){
    manifest_destroy(*ppOther);
    return;
  }
  isPublic = !content_is_private(mid);














  /* Try to make the parent manifest a delta from the child, if that
  ** is an appropriate thing to do.  For a new baseline, make the
  ** previous baseline a delta from the current baseline.
  */
  if( (pParent->zBaseline==0)==(pChild->zBaseline==0) ){
    content_deltify(pmid, mid, 0);
................................................................................
      if( pChildFile==0 && pParentFile->zUuid!=0 ){
        add_one_mlink(pmid, pParentFile->zUuid, mid, 0, pParentFile->zName, 0,
                      isPublic, isPrim, 0);
      }
    }
  }
  manifest_cache_insert(*ppOther);











}

/*
** Setup to do multiple manifest_crosslink() calls.
** This is only required if processing ticket changes.
*/
void manifest_crosslink_begin(void){
................................................................................
      }
      for(i=0; i<p->nParent; i++){
        int pid = uuid_to_rid(p->azParent[i], 1);
        db_multi_exec(
           "INSERT OR IGNORE INTO plink(pid, cid, isprim, mtime, baseid)"
           "VALUES(%d, %d, %d, %.17g, %s)",
           pid, rid, i==0, p->rDate, zBaseId/*safe-for-%s*/);
        add_mlink(pid, 0, rid, p, i==0);
        if( i==0 ) parentid = pid;
      }

      if( p->nParent>1 ){
        /* Change MLINK.PID from 0 to -1 for files that are added by merge. */
        db_multi_exec(
           "UPDATE mlink SET pid=-1"
           " WHERE mid=%d"
           "   AND pid=0"
           "   AND fnid IN "







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  }
  return mperm;
}

/*
** Add a single entry to the mlink table.  Also add the filename to
** the filename table if it is not there already.
**
** An mlink entry is always created if isPrimary is true.  But if
** isPrimary is false (meaning that pmid is a merge parent of mid)
** then the mlink entry is only created if there is already an mlink
** from primary parent for the same file.
*/
static void add_one_mlink(
  int pmid,                 /* The parent manifest */
  const char *zFromUuid,    /* UUID for content in parent */
  int mid,                  /* The record ID of the manifest */
  const char *zToUuid,      /* UUID for content in child */
  const char *zFilename,    /* Filename */
  const char *zPrior,       /* Previous filename. NULL if unchanged */
  int isPublic,             /* True if mid is not a private manifest */
  int isPrimary,            /* pmid is the primary parent of mid */
  int mperm                 /* 1: exec, 2: symlink */
){
  int fnid, pfnid, pid, fid;
  int doInsert;
  static Stmt s1, s2;

  fnid = filename_to_fnid(zFilename);
  if( zPrior==0 ){
    pfnid = 0;
  }else{
    pfnid = filename_to_fnid(zPrior);
  }
................................................................................
  }
  if( zToUuid==0 || zToUuid[0]==0 ){
    fid = 0;
  }else{
    fid = uuid_to_rid(zToUuid, 1);
    if( isPublic ) content_make_public(fid);
  }
  if( isPrimary ){
    doInsert = 1;
  }else{
    db_static_prepare(&s2,
      "SELECT 1 FROM mlink WHERE mid=:m AND fnid=:n AND NOT isaux"
    );
    db_bind_int(&s2, ":m", mid);
    db_bind_int(&s2, ":n", fnid);
    doInsert = db_step(&s2)==SQLITE_ROW;
    db_reset(&s2);
  }
  if( doInsert ){
    db_static_prepare(&s1,
      "INSERT INTO mlink(mid,fid,pmid,pid,fnid,pfnid,mperm,isaux)"
      "VALUES(:m,:f,:pm,:p,:n,:pfn,:mp,:isaux)"
    );
    db_bind_int(&s1, ":m", mid);
    db_bind_int(&s1, ":f", fid);
    db_bind_int(&s1, ":pm", pmid);
    db_bind_int(&s1, ":p", pid);
    db_bind_int(&s1, ":n", fnid);
    db_bind_int(&s1, ":pfn", pfnid);
    db_bind_int(&s1, ":mp", mperm);
    db_bind_int(&s1, ":isaux", isPrimary==0);
    db_exec(&s1);
  }
  if( pid && fid ){
    content_deltify(pid, fid, 0);
  }
}

/*
** Do a binary search to find a file in the p->aFile[] array.
................................................................................
** A single mlink entry is added for every file that changed content,
** name, and/or permissions going from pid to cid.
**
** Deleted files have mlink.fid=0.
** Added files have mlink.pid=0.
** File added by merge have mlink.pid=-1
** Edited files have both mlink.pid!=0 and mlink.fid!=0
**
** Many mlink entries for merge parents will only be added if another mlink
** entry already exists for the same file from the primary parent.  Therefore,
** to ensure that all merge-parent mlink entries are properly created:
**
**    (1) Make this routine a no-op if pParent is a merge parent and the
**        primary parent is a phantom.
**    (2) Invoke this routine recursively for merge-parents if pParent is the
**        primary parent.
*/
static void add_mlink(
  int pmid, Manifest *pParent,  /* Parent check-in */
  int mid,  Manifest *pChild,   /* The child check-in */
  int isPrim                    /* TRUE if pmid is the primary parent of mid */
){
  Blob otherContent;
................................................................................
    if( *ppOther==0 ) return;
  }
  if( fetch_baseline(pParent, 0) || fetch_baseline(pChild, 0) ){
    manifest_destroy(*ppOther);
    return;
  }
  isPublic = !content_is_private(mid);
  
  /* If pParent is not the primary parent of pChild, and the primary
  ** parent of pChild is a phantom, then abort this routine without
  ** doing any work.  The mlink entries will be computed when the
  ** primary parent dephantomizes.
  */
  if( !isPrim && otherRid==mid
   && !db_exists("SELECT 1 FROM blob WHERE uuid=%Q AND size>0",
                 pChild->azParent[0])
  ){
    manifest_cache_insert(*ppOther);
    return;
  }

  /* Try to make the parent manifest a delta from the child, if that
  ** is an appropriate thing to do.  For a new baseline, make the
  ** previous baseline a delta from the current baseline.
  */
  if( (pParent->zBaseline==0)==(pChild->zBaseline==0) ){
    content_deltify(pmid, mid, 0);
................................................................................
      if( pChildFile==0 && pParentFile->zUuid!=0 ){
        add_one_mlink(pmid, pParentFile->zUuid, mid, 0, pParentFile->zName, 0,
                      isPublic, isPrim, 0);
      }
    }
  }
  manifest_cache_insert(*ppOther);
  
  /* If pParent is the primary parent of pChild, also run this analysis
  ** for all merge parents of pChild
  */
  if( isPrim ){
    for(i=1; i<pChild->nParent; i++){
      pmid = uuid_to_rid(pChild->azParent[i], 0);
      if( pmid<=0 ) continue;
      add_mlink(pmid, 0, mid, pChild, 0);
    }
  }
}

/*
** Setup to do multiple manifest_crosslink() calls.
** This is only required if processing ticket changes.
*/
void manifest_crosslink_begin(void){
................................................................................
      }
      for(i=0; i<p->nParent; i++){
        int pid = uuid_to_rid(p->azParent[i], 1);
        db_multi_exec(
           "INSERT OR IGNORE INTO plink(pid, cid, isprim, mtime, baseid)"
           "VALUES(%d, %d, %d, %.17g, %s)",
           pid, rid, i==0, p->rDate, zBaseId/*safe-for-%s*/);

        if( i==0 ) parentid = pid;
      }
      add_mlink(parentid, 0, rid, p, 1);
      if( p->nParent>1 ){
        /* Change MLINK.PID from 0 to -1 for files that are added by merge. */
        db_multi_exec(
           "UPDATE mlink SET pid=-1"
           " WHERE mid=%d"
           "   AND pid=0"
           "   AND fnid IN "