3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
11 # This file implements regression tests for SQLite library.
13 # The tests in this file are brute force tests of the multi-threaded
17 set testdir [file dirname $argv0]
18 source $testdir/tester.tcl
21 # Configure the sorter to use 3 background threads.
22 db eval {PRAGMA threads=3}
24 # Minimum number of seconds to run for. If the value is 0, each test
25 # is run exactly once. Otherwise, tests are repeated until the timeout
28 if {[permutation] == "multithread"} { set SORT4TIMEOUT 300 }
30 #--------------------------------------------------------------------
31 # Set up a table "t1" containing $nRow rows. Each row contains also
32 # contains blob fields that collectively contain at least $nPayload
33 # bytes of content. The table schema is as follows:
35 # CREATE TABLE t1(a INTEGER, <extra-columns>, b INTEGER);
37 # For each row, the values of columns "a" and "b" are set to the same
38 # pseudo-randomly selected integer. The "extra-columns", of which there
39 # are at most eight, are named c0, c1, c2 etc. Column c0 contains a 4
40 # byte string. Column c1 an 8 byte string. Field c2 16 bytes, and so on.
42 # This table is intended to be used for testing queries of the form:
44 # SELECT a, <cols>, b FROM t1 ORDER BY a;
46 # The test code checks that rows are returned in order, and that the
47 # values of "a" and "b" are the same for each row (the idea being that
48 # if field "b" at the end of the sorter record has not been corrupted,
49 # the rest of the record is probably Ok as well).
51 proc populate_table {nRow nPayload} {
55 for {set nCol 0} {$n < $nPayload} {incr nCol} {
56 incr n [expr (4 << $nCol)]
59 set cols [lrange [list xxx c0 c1 c2 c3 c4 c5 c6 c7] 1 $nCol]
60 set data [lrange [list xxx \
61 randomblob(4) randomblob(8) randomblob(16) randomblob(32) \
62 randomblob(64) randomblob(128) randomblob(256) randomblob(512) \
65 execsql { DROP TABLE IF EXISTS t1 }
68 execsql "CREATE TABLE t1(a, [join $cols ,], b);"
69 set insert "INSERT INTO t1 VALUES(:k, [join $data ,], :k)"
70 for {set i 0} {$i < $nRow} {incr i} {
71 set k [expr int(rand()*1000000000)]
77 # Helper for [do_sorter_test]
79 proc sorter_test {nRow nRead nPayload} {
82 set nLoad [expr ($nRow > $nRead) ? $nRead : $nRow]
84 set nPayload [expr (($nPayload+3)/4) * 4]
87 0x04 c0 0x08 c1 0x10 c2 0x20 c3
88 0x40 c4 0x80 c5 0x100 c6 0x200 c7
90 if {$nPayload & $mask} { lappend cols $col }
93 # Create two SELECT statements. Statement $sql1 uses the sorter to sort
94 # $nRow records of a bit over $nPayload bytes each read from the "t1"
95 # table created by [populate_table] proc above. Rows are sorted in order
96 # of the integer field in each "t1" record.
98 # The second SQL statement sorts the same set of rows as the first, but
99 # uses a LIMIT clause, causing SQLite to use a temp table instead of the
100 # sorter for sorting.
102 set sql1 "SELECT a, [join $cols ,], b FROM t1 WHERE rowid<=$nRow ORDER BY a"
103 set sql2 "SELECT a FROM t1 WHERE rowid<=$nRow ORDER BY a LIMIT $nRead"
105 # Pass the two SQL statements to a helper command written in C. This
106 # command steps statement $sql1 $nRead times and compares the integer
107 # values in the rows returned with the results of executing $sql2. If
108 # the comparison fails (indicating some bug in the sorter), a Tcl
109 # exception is thrown.
111 sorter_test_sort4_helper db $sql1 $nRead $sql2
117 # do_sorter_test <testname> <args>...
119 # where <args> are any of the following switches:
121 # -rows N (number of rows to have sorter sort)
122 # -read N (number of rows to read out of sorter)
123 # -payload N (bytes of payload to read with each row)
124 # -cachesize N (Value for "PRAGMA cache_size = ?")
125 # -repeats N (number of times to repeat test)
126 # -fakeheap BOOL (true to use separate allocations for in-memory records)
128 proc do_sorter_test {tn args} {
133 set a(-cachesize) 100
136 foreach {s val} $args {
137 if {[info exists a($s)]==0} {
139 set optlist "[join [array names a] ,] or -cachesize"
140 error "Unknown option $s, expected $optlist"
144 if {[permutation] == "memsys3" || [permutation] == "memsys5"} {
147 if {$a(-fakeheap)} { sorter_test_fakeheap 1 }
150 db eval "PRAGMA cache_size = $a(-cachesize)"
151 do_test $tn [subst -nocommands {
152 for {set i 0} {[set i] < $a(-repeats)} {incr i} {
153 sorter_test $a(-rows) $a(-read) $a(-payload)
157 if {$a(-fakeheap)} { sorter_test_fakeheap 0 }
160 proc clock_seconds {} {
161 db one {SELECT strftime('%s')}
164 #-------------------------------------------------------------------------
167 # Create a test database.
169 execsql "PRAGMA page_size = 4096"
170 populate_table 100000 500
173 set iTimeLimit [expr [clock_seconds] + $SORT4TIMEOUT]
175 for {set t 2} {1} {incr tn} {
176 do_sorter_test $t.2 -repeats 10 -rows 1000 -read 100
177 do_sorter_test $t.3 -repeats 10 -rows 100000 -read 1000
178 do_sorter_test $t.4 -repeats 10 -rows 100000 -read 1000 -payload 500
179 do_sorter_test $t.5 -repeats 10 -rows 100000 -read 100000 -payload 8
180 do_sorter_test $t.6 -repeats 10 -rows 100000 -read 10 -payload 8
181 do_sorter_test $t.7 -repeats 10 -rows 10000 -read 10000 -payload 8 -fakeheap 1
182 do_sorter_test $t.8 -repeats 10 -rows 100000 -read 10000 -cachesize 250
184 set iNow [clock_seconds]
185 if {$iNow>=$iTimeLimit} break
186 do_test "$testprefix-([expr $iTimeLimit-$iNow] seconds remain)" {} {}