AryaWu/sqlite

1# 2017 August 072#3# The author disclaims copyright to this source code.  In place of4# a legal notice, here is a blessing:5#6#    May you do good and not evil.7#    May you find forgiveness for yourself and forgive others.8#    May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library.  The12# focus of this script testing the ability of SQLite to use mmap13# to access files larger than 4GiB.14#15 16if {[file exists skip-big-file]} return17if {$tcl_platform(os)=="Darwin"} return18 19set testdir [file dirname $argv0]20source $testdir/tester.tcl21set testprefix bigmmap22 23ifcapable !mmap||!vtab {24  finish_test25  return26}27 28set mmap_limit 029db eval { 30  SELECT compile_options AS x FROM pragma_compile_options 31  WHERE x LIKE 'max_mmap_size=%' 32} {33  regexp {MAX_MMAP_SIZE=([0-9]*)} $x -> mmap_limit34}35if {$mmap_limit < [expr 8 * 1<<30]} {36  puts "Skipping bigmmap.test - requires SQLITE_MAX_MMAP_SIZE >= 8G"37  finish_test38  return39}40 41 42#-------------------------------------------------------------------------43# Create the database file roughly 8GiB in size. Most pages are unused,44# except that there is a table and index clustered around each 1GiB45# boundary.46#47do_execsql_test 1.0 {48  PRAGMA page_size = 4096;49  CREATE TABLE t0(a INTEGER PRIMARY KEY, b, c, UNIQUE(b, c));50  WITH  s(i) AS ( SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 100 )51  INSERT INTO t0 SELECT i, 't0', randomblob(800) FROM s;52}53 54for {set i 1} {$i < 8} {incr i} {55  if {[catch {fake_big_file [expr $i*1024] [get_pwd]/test.db}]} {56    puts "Cannot create ${i}MB sparse file"57    finish_test58    return59  }60  hexio_write test.db 28 [format %.8x [expr ($i*1024*1024*1024/4096) - 5]]61 62  do_execsql_test 1.$i "63    CREATE TABLE t$i (a INTEGER PRIMARY KEY, b, c, UNIQUE(b, c));64    WITH  s(i) AS ( SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 100 )65      INSERT INTO t$i SELECT i, 't$i', randomblob(800) FROM s;66  "67}68 69#-------------------------------------------------------------------------70# Check that data can be retrieved from the db with a variety of 71# configured mmap size limits.72#73for {set i 0} {$i < 9} {incr i} {74 75  # Configure a memory mapping $i GB in size.76  #77  set val [expr $i*1024*1024*1024]78  execsql "PRAGMA main.mmap_size = $val"79  do_execsql_test 2.$i.0 {80    PRAGMA main.mmap_size81  } $val82 83  for {set t 0} {$t < 8} {incr t} {84    do_execsql_test 2.$i.$t.1 "85      SELECT count(*) FROM t$t;86      SELECT count(b || c) FROM t$t GROUP BY b;87    " {100 100}88  89    do_execsql_test 2.$i.$t.2 "90      SELECT * FROM t$t AS o WHERE 91        NOT EXISTS( SELECT * FROM t$t AS i WHERE a=o.a AND +b=o.b AND +c=o.c )92      ORDER BY b, c;93    " {}94    95    do_eqp_test 2.$i.$t.3 "96      SELECT * FROM t$t AS o WHERE 97        NOT EXISTS( SELECT * FROM t$t AS i WHERE a=o.a AND +b=o.b AND +c=o.c )98      ORDER BY b, c;99    " [string map {"\n    " "\n"} "100      QUERY PLAN101      |--SCAN o USING COVERING INDEX sqlite_autoindex_t${t}_1102      `--CORRELATED SCALAR SUBQUERY xxxxxx103         `--SEARCH i USING INTEGER PRIMARY KEY (rowid=?)104    "]105  }106}107 108finish_test109