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Overview
Comment:Adjustments to mmap1.test so that it works better on windows. It still gets some answers wrong, but it no longer crashes.
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SHA1:ee8d3ceeec40d84adb8798f084b6f1215ab56d92
User & Date: drh 2013-04-02 20:29:33
Context
2013-04-02
20:55
Fix a resource leak in os_unix.c. check-in: b29cda03 user: dan tags: experimental-mmap
20:29
Adjustments to mmap1.test so that it works better on windows. It still gets some answers wrong, but it no longer crashes. check-in: ee8d3cee user: drh tags: experimental-mmap
20:19
Fix a bug in mmap2.test that was leaving an invalid sqlite3_log() callback installed, causing a crash. check-in: c0cdaa07 user: dan tags: experimental-mmap
Changes
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Changes to test/mmap1.test.

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set testprefix mmap1

proc nRead {db} {
  set bt [btree_from_db $db]
  db_enter $db
  array set stats [btree_pager_stats $bt]
  db_leave $db

  return $stats(read)
}

foreach {t mmap_limit nRead c2init} {
  1.1 { PRAGMA mmap_limit = 70000000 }   4 {}
  1.2 { PRAGMA mmap_limit =    51200 } 156 {}
  1.3 { PRAGMA mmap_limit =        0 } 344 {}
  1.4 { PRAGMA mmap_limit = 70000000 }   4 {PRAGMA mmap_limit = 70000000 }
  1.5 { PRAGMA mmap_limit =    51200 } 156 {PRAGMA mmap_limit = 70000000 }
  1.6 { PRAGMA mmap_limit =        0 } 344 {PRAGMA mmap_limit = 70000000 }
} {
  do_multiclient_test tn {

    sql1 $mmap_limit
    sql2 $c2init

    code2 {
      set ::rcnt 0
      proc rblob {n} {
        set ::rcnt [expr (($::rcnt << 3) + $::rcnt + 456) & 0xFFFFFFFF]
................................................................................
        set str [format %.8x [expr $::rcnt ^ 0xbdf20da3]] 
        string range [string repeat $str [expr $n/4]] 1 $n
      }
      db2 func rblob rblob
    }

    sql2 { 

      PRAGMA auto_vacuum = 1;
      CREATE TABLE t1(a, b, UNIQUE(a, b));
      INSERT INTO t1 VALUES(rblob(500), rblob(500));
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    2
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    4
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    8
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --   16
................................................................................
}

reset_db
db func rblob rblob

do_execsql_test 2.1 {
  PRAGMA auto_vacuum = 1;
  PRAGMA mmap_limit = 70000000;
  PRAGMA journal_mode = wal;
  CREATE TABLE t1(a, b, UNIQUE(a, b));
  INSERT INTO t1 VALUES(rblob(500), rblob(500));
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    2
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    4
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    8
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --   16
................................................................................
  }
} {16}

do_execsql_test 2.4 {
  PRAGMA wal_checkpoint;
} {0 24 24}


reset_db
db func rblob rblob
do_execsql_test 3.1 {
  PRAGMA auto_vacuum = 1;

  CREATE TABLE t1(a, b, UNIQUE(a, b));
  INSERT INTO t1 VALUES(rblob(500), rblob(500));







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set testprefix mmap1

proc nRead {db} {
  set bt [btree_from_db $db]
  db_enter $db
  array set stats [btree_pager_stats $bt]
  db_leave $db
  # puts [array get stats]
  return $stats(read)
}

foreach {t mmap_limit nRead c2init} {
  1.1 { PRAGMA mmap_limit = 67108864 }   4 {}
  1.2 { PRAGMA mmap_limit =    53248 } 150 {}
  1.3 { PRAGMA mmap_limit =        0 } 344 {}
  1.4 { PRAGMA mmap_limit = 67108864 }   4 {PRAGMA mmap_limit = 67108864 }
  1.5 { PRAGMA mmap_limit =    53248 } 150 {PRAGMA mmap_limit = 67108864 }
  1.6 { PRAGMA mmap_limit =        0 } 344 {PRAGMA mmap_limit = 67108864 }
} {
  do_multiclient_test tn {
    sql1 {PRAGMA page_size=1024}
    sql1 $mmap_limit
    sql2 $c2init

    code2 {
      set ::rcnt 0
      proc rblob {n} {
        set ::rcnt [expr (($::rcnt << 3) + $::rcnt + 456) & 0xFFFFFFFF]
................................................................................
        set str [format %.8x [expr $::rcnt ^ 0xbdf20da3]] 
        string range [string repeat $str [expr $n/4]] 1 $n
      }
      db2 func rblob rblob
    }

    sql2 {
      PRAGMA page_size=1024;
      PRAGMA auto_vacuum = 1;
      CREATE TABLE t1(a, b, UNIQUE(a, b));
      INSERT INTO t1 VALUES(rblob(500), rblob(500));
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    2
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    4
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    8
      INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --   16
................................................................................
}

reset_db
db func rblob rblob

do_execsql_test 2.1 {
  PRAGMA auto_vacuum = 1;
  PRAGMA mmap_limit = 67108864;
  PRAGMA journal_mode = wal;
  CREATE TABLE t1(a, b, UNIQUE(a, b));
  INSERT INTO t1 VALUES(rblob(500), rblob(500));
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    2
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    4
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --    8
  INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; --   16
................................................................................
  }
} {16}

do_execsql_test 2.4 {
  PRAGMA wal_checkpoint;
} {0 24 24}

db2 close
reset_db
db func rblob rblob
do_execsql_test 3.1 {
  PRAGMA auto_vacuum = 1;

  CREATE TABLE t1(a, b, UNIQUE(a, b));
  INSERT INTO t1 VALUES(rblob(500), rblob(500));