279 lines
7.8 KiB
Plaintext
279 lines
7.8 KiB
Plaintext
# 2013 March 20
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable !mmap {
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finish_test
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return
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}
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source $testdir/lock_common.tcl
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set testprefix mmap1
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proc nRead {db} {
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set bt [btree_from_db $db]
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db_enter $db
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array set stats [btree_pager_stats $bt]
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db_leave $db
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# puts [array get stats]
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return $stats(read)
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}
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# Return a Tcl script that registers a user-defined scalar function
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# named rblob() with database handle $dbname. The function returns a
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# sequence of pseudo-random blobs based on seed value $seed.
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#
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proc register_rblob_code {dbname seed} {
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return [subst -nocommands {
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set ::rcnt $seed
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proc rblob {n} {
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set ::rcnt [expr (([set ::rcnt] << 3) + [set ::rcnt] + 456) & 0xFFFFFFFF]
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set str [format %.8x [expr [set ::rcnt] ^ 0xbdf20da3]]
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string range [string repeat [set str] [expr [set n]/4]] 1 [set n]
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}
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$dbname func rblob rblob
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}]
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}
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# For cases 1.1 and 1.4, the number of pages read using xRead() is 4 on
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# unix and 9 on windows. The difference is that windows only ever maps
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# an integer number of OS pages (i.e. creates mappings that are a multiple
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# of 4KB in size). Whereas on unix any sized mapping may be created.
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#
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foreach {t mmap_size nRead c2init} {
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1.1 { PRAGMA mmap_size = 67108864 } /[49]/ {PRAGMA mmap_size = 0}
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1.2 { PRAGMA mmap_size = 53248 } 150 {PRAGMA mmap_size = 0}
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1.3 { PRAGMA mmap_size = 0 } 344 {PRAGMA mmap_size = 0}
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1.4 { PRAGMA mmap_size = 67108864 } /[49]/ {PRAGMA mmap_size = 67108864 }
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1.5 { PRAGMA mmap_size = 53248 } 150 {PRAGMA mmap_size = 67108864 }
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1.6 { PRAGMA mmap_size = 0 } 344 {PRAGMA mmap_size = 67108864 }
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} {
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do_multiclient_test tn {
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sql1 {PRAGMA cache_size=2000}
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sql2 {PRAGMA cache_size=2000}
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sql1 {PRAGMA page_size=1024}
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sql1 $mmap_size
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sql2 $c2init
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code2 [register_rblob_code db2 0]
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sql2 {
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PRAGMA page_size=1024;
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PRAGMA auto_vacuum = 1;
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CREATE TABLE t1(a, b, UNIQUE(a, b));
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INSERT INTO t1 VALUES(rblob(500), rblob(500));
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 2
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 4
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 8
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 16
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 32
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}
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do_test $t.$tn.1 {
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sql1 "SELECT count(*) FROM t1; PRAGMA integrity_check ; PRAGMA page_count"
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} {32 ok 77}
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# Have connection 2 shrink the file. Check connection 1 can still read it.
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sql2 { DELETE FROM t1 WHERE rowid%2; }
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do_test $t.$tn.2 {
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sql1 "SELECT count(*) FROM t1; PRAGMA integrity_check ; PRAGMA page_count"
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} {16 ok 42}
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# Have connection 2 grow the file. Check connection 1 can still read it.
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sql2 { INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1 }
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do_test $t.$tn.3 {
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sql1 "SELECT count(*) FROM t1; PRAGMA integrity_check ; PRAGMA page_count"
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} {32 ok 79}
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# Have connection 2 grow the file again. Check connection 1 is still ok.
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sql2 { INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1 }
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do_test $t.$tn.4 {
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sql1 "SELECT count(*) FROM t1; PRAGMA integrity_check ; PRAGMA page_count"
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} {64 ok 149}
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# Check that the number of pages read by connection 1 indicates that the
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# "PRAGMA mmap_size" command worked.
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do_test $t.$tn.5 { nRead db } $nRead
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}
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}
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set ::rcnt 0
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proc rblob {n} {
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set ::rcnt [expr (($::rcnt << 3) + $::rcnt + 456) & 0xFFFFFFFF]
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set str [format %.8x [expr $::rcnt ^ 0xbdf20da3]]
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string range [string repeat $str [expr $n/4]] 1 $n
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}
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reset_db
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db func rblob rblob
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ifcapable wal {
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do_execsql_test 2.1 {
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PRAGMA auto_vacuum = 1;
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PRAGMA mmap_size = 67108864;
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PRAGMA journal_mode = wal;
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CREATE TABLE t1(a, b, UNIQUE(a, b));
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INSERT INTO t1 VALUES(rblob(500), rblob(500));
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 2
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 4
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 8
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 16
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 32
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PRAGMA wal_checkpoint;
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} {67108864 wal 0 103 103}
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do_execsql_test 2.2 {
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PRAGMA auto_vacuum;
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SELECT count(*) FROM t1;
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} {1 32}
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if {[permutation] != "inmemory_journal"} {
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do_test 2.3 {
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sqlite3 db2 test.db
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db2 func rblob rblob
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db2 eval {
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DELETE FROM t1 WHERE (rowid%4);
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PRAGMA wal_checkpoint;
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}
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db2 eval {
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 16
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SELECT count(*) FROM t1;
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}
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} {16}
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do_execsql_test 2.4 {
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PRAGMA wal_checkpoint;
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} {0 24 24}
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db2 close
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}
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}
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reset_db
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execsql { PRAGMA mmap_size = 67108864; }
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db func rblob rblob
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do_execsql_test 3.1 {
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PRAGMA auto_vacuum = 1;
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CREATE TABLE t1(a, b, UNIQUE(a, b));
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INSERT INTO t1 VALUES(rblob(500), rblob(500));
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 2
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 4
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INSERT INTO t1 SELECT rblob(500), rblob(500) FROM t1; -- 8
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CREATE TABLE t2(a, b, UNIQUE(a, b));
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INSERT INTO t2 SELECT * FROM t1;
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} {}
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do_test 3.2 {
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set nRow 0
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db eval {SELECT * FROM t2 ORDER BY a, b} {
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if {$nRow==4} { db eval { DELETE FROM t1 } }
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incr nRow
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}
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set nRow
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} {8}
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#-------------------------------------------------------------------------
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# Ensure that existing cursors using xFetch() pages see changes made
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# to rows using the incrblob API.
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#
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reset_db
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execsql { PRAGMA mmap_size = 67108864; }
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set aaa [string repeat a 400]
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set bbb [string repeat b 400]
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set ccc [string repeat c 400]
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set ddd [string repeat d 400]
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set eee [string repeat e 400]
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do_execsql_test 4.1 {
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PRAGMA page_size = 1024;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES($aaa);
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INSERT INTO t1 VALUES($bbb);
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INSERT INTO t1 VALUES($ccc);
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INSERT INTO t1 VALUES($ddd);
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SELECT * FROM t1;
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BEGIN;
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} [list $aaa $bbb $ccc $ddd]
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do_test 4.2 {
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set ::STMT [sqlite3_prepare db "SELECT * FROM t1 ORDER BY rowid" -1 dummy]
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sqlite3_step $::STMT
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sqlite3_column_text $::STMT 0
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} $aaa
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do_test 4.3 {
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foreach r {2 3 4} {
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set fd [db incrblob t1 x $r]
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puts -nonewline $fd $eee
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close $fd
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}
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set res [list]
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while {"SQLITE_ROW" == [sqlite3_step $::STMT]} {
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lappend res [sqlite3_column_text $::STMT 0]
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}
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set res
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} [list $eee $eee $eee]
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do_test 4.4 {
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sqlite3_finalize $::STMT
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} SQLITE_OK
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do_execsql_test 4.5 { COMMIT }
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#-------------------------------------------------------------------------
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# Ensure that existing cursors holding xFetch() references are not
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# confused if those pages are moved to make way for the root page of a
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# new table or index.
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#
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reset_db
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execsql { PRAGMA mmap_size = 67108864; }
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do_execsql_test 5.1 {
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PRAGMA auto_vacuum = 2;
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PRAGMA page_size = 1024;
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES($aaa);
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INSERT INTO t1 VALUES($bbb);
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INSERT INTO t1 VALUES($ccc);
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INSERT INTO t1 VALUES($ddd);
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PRAGMA auto_vacuum;
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SELECT * FROM t1;
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} [list 2 $aaa $bbb $ccc $ddd]
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do_test 5.2 {
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set ::STMT [sqlite3_prepare db "SELECT * FROM t1 ORDER BY rowid" -1 dummy]
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sqlite3_step $::STMT
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sqlite3_column_text $::STMT 0
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} $aaa
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do_execsql_test 5.3 {
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CREATE TABLE t2(x);
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INSERT INTO t2 VALUES('tricked you!');
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INSERT INTO t2 VALUES('tricked you!');
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}
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do_test 5.4 {
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sqlite3_step $::STMT
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sqlite3_column_text $::STMT 0
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} $bbb
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do_test 5.5 {
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sqlite3_finalize $::STMT
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} SQLITE_OK
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finish_test
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