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Overview
Comment:Fix a problem with the deferred page allocation on this branch that could occur when the database file is just slightly smaller than the PENDING_BYTE page offset.
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Timelines: family | ancestors | descendants | both | begin-concurrent
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SHA3-256: 47a7dd92355ffd74645cf8da8186d5799c05a95907877a09c28de41135deeede
User & Date: dan 2017-05-25 21:02:00.680
Context
2017-05-26
16:15
Fix a problem with deferred page allocation in transactions that revert page allocations by savepoint rollbacks. (check-in: a4a3bbe646 user: dan tags: begin-concurrent)
2017-05-25
21:02
Fix a problem with the deferred page allocation on this branch that could occur when the database file is just slightly smaller than the PENDING_BYTE page offset. (check-in: 47a7dd9235 user: dan tags: begin-concurrent)
2017-05-23
19:23
Add experimental new API sqlite3_wal_info(). (check-in: 5b9d498f6e user: dan tags: begin-concurrent)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/bitvec.c.
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** and that the value for "i" is within range of the Bitvec object.
** Otherwise the behavior is undefined.
*/
int sqlite3BitvecSet(Bitvec *p, u32 i){
  u32 h;
  if( p==0 ) return SQLITE_OK;
  assert( i>0 );
  /* assert( i<=p->iSize ); */
  if( i>p->iSize ){
    sqlite3_log(SQLITE_ERROR, 
        "Bitvec: setting bit %d of bitvec size %d\n", (int)i, (int)p->iSize
    );
  }
  i--;
  while((p->iSize > BITVEC_NBIT) && p->iDivisor) {







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** and that the value for "i" is within range of the Bitvec object.
** Otherwise the behavior is undefined.
*/
int sqlite3BitvecSet(Bitvec *p, u32 i){
  u32 h;
  if( p==0 ) return SQLITE_OK;
  assert( i>0 );
  assert( i<=p->iSize );
  if( i>p->iSize ){
    sqlite3_log(SQLITE_ERROR, 
        "Bitvec: setting bit %d of bitvec size %d\n", (int)i, (int)p->iSize
    );
  }
  i--;
  while((p->iSize > BITVEC_NBIT) && p->iDivisor) {
Changes to src/btree.c.
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        ** the transaction out to disk. Before doing so though, attempt to
        ** relocate some of the new pages to free locations within the body
        ** of the database file (i.e. free-list entries). */
        if( rc==SQLITE_OK ){
          assert( nCurrent!=PENDING_BYTE_PAGE(pBt) );
          sqlite3PagerSetDbsize(pBt->pPager, nCurrent);
          nFree = get4byte(&p1[36]);
          nFin = MAX(nCurrent-nFree, nHPage);
          if( nCurrent>PENDING_BYTE_PAGE(pBt) && nFin<=PENDING_BYTE_PAGE(pBt) ){
            nFin--;
          }

          rc = btreeRelocateRange(pBt, nFin+1, nCurrent, 0);
        }

        put4byte(&p1[28], nFin);
      }
    }
    sqlite3PagerSetDbsize(pPager, nFin);







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        ** the transaction out to disk. Before doing so though, attempt to
        ** relocate some of the new pages to free locations within the body
        ** of the database file (i.e. free-list entries). */
        if( rc==SQLITE_OK ){
          assert( nCurrent!=PENDING_BYTE_PAGE(pBt) );
          sqlite3PagerSetDbsize(pBt->pPager, nCurrent);
          nFree = get4byte(&p1[36]);
          nFin = nCurrent-nFree;
          if( nCurrent>PENDING_BYTE_PAGE(pBt) && nFin<=PENDING_BYTE_PAGE(pBt) ){
            nFin--;
          }
          nFin = MAX(nFin, nHPage);
          rc = btreeRelocateRange(pBt, nFin+1, nCurrent, 0);
        }

        put4byte(&p1[28], nFin);
      }
    }
    sqlite3PagerSetDbsize(pPager, nFin);
Changes to test/concurrent2.test.
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  do_test 11.$tn.5 {
    sql1 { PRAGMA wal_checkpoint }
    sql2 { INSERT INTO t1 VALUES(3) }
    code2 { sqlite3_wal_info db2 main }
  } {0 1}
}












































finish_test







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  do_test 11.$tn.5 {
    sql1 { PRAGMA wal_checkpoint }
    sql2 { INSERT INTO t1 VALUES(3) }
    code2 { sqlite3_wal_info db2 main }
  } {0 1}
}

reset_db
do_execsql_test 12.0 {
  PRAGMA journal_mode = wal;
  CREATE TABLE tx(a INTEGER PRIMARY KEY, b);
} {wal}
do_test 12.1 {
  for {set i 0} {$i < 50} {incr i} {
    execsql {
      BEGIN CONCURRENT;
      INSERT INTO tx(b) VALUES( randomblob( 1200 ) );
      COMMIT;
    }
  }
  execsql { PRAGMA page_size }
} {1024}
do_execsql_test 12.2 {
  DELETE FROM tx;
}
do_test 12.3 {
  for {set i 0} {$i < 50} {incr i} {
    execsql {
      BEGIN CONCURRENT;
      INSERT INTO tx(b) VALUES( randomblob( 1200 ) );
      COMMIT;
    }
  }
  execsql { PRAGMA page_size }
} {1024}
do_execsql_test 12.4 {
  DELETE FROM tx;
}
do_test 12.5 {
  execsql { BEGIN CONCURRENT }
  for {set i 0} {$i < 5000} {incr i} {
    execsql {
      INSERT INTO tx(b) VALUES( randomblob( 1200 ) );
    }
  }
  execsql { COMMIT }
  execsql { PRAGMA page_size }
} {1024}


finish_test