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
22 sqlite3_config_pmasz 10
27 # Configure the sorter to use 3 background threads.
29 # EVIDENCE-OF: R-19249-32353 SQLITE_LIMIT_WORKER_THREADS The maximum
30 # number of auxiliary worker threads that a single prepared statement
33 do_test sort4-init001 {
34 db eval {PRAGMA threads=5}
35 sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS -1
37 do_test sort4-init002 {
38 sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS 3
39 db eval {PRAGMA threads}
43 # Minimum number of seconds to run for. If the value is 0, each test
44 # is run exactly once. Otherwise, tests are repeated until the timeout
47 if {[permutation] == "multithread"} { set SORT4TIMEOUT 300 }
49 #--------------------------------------------------------------------
50 # Set up a table "t1" containing $nRow rows. Each row contains also
51 # contains blob fields that collectively contain at least $nPayload
52 # bytes of content. The table schema is as follows:
54 # CREATE TABLE t1(a INTEGER, <extra-columns>, b INTEGER);
56 # For each row, the values of columns "a" and "b" are set to the same
57 # pseudo-randomly selected integer. The "extra-columns", of which there
58 # are at most eight, are named c0, c1, c2 etc. Column c0 contains a 4
59 # byte string. Column c1 an 8 byte string. Field c2 16 bytes, and so on.
61 # This table is intended to be used for testing queries of the form:
63 # SELECT a, <cols>, b FROM t1 ORDER BY a;
65 # The test code checks that rows are returned in order, and that the
66 # values of "a" and "b" are the same for each row (the idea being that
67 # if field "b" at the end of the sorter record has not been corrupted,
68 # the rest of the record is probably Ok as well).
70 proc populate_table {nRow nPayload} {
74 for {set nCol 0} {$n < $nPayload} {incr nCol} {
75 incr n [expr (4 << $nCol)]
78 set cols [lrange [list xxx c0 c1 c2 c3 c4 c5 c6 c7] 1 $nCol]
79 set data [lrange [list xxx \
80 randomblob(4) randomblob(8) randomblob(16) randomblob(32) \
81 randomblob(64) randomblob(128) randomblob(256) randomblob(512) \
84 execsql { DROP TABLE IF EXISTS t1 }
87 execsql "CREATE TABLE t1(a, [join $cols ,], b);"
88 set insert "INSERT INTO t1 VALUES(:k, [join $data ,], :k)"
89 for {set i 0} {$i < $nRow} {incr i} {
90 set k [expr int(rand()*1000000000)]
96 # Helper for [do_sorter_test]
98 proc sorter_test {nRow nRead nPayload} {
101 set nLoad [expr ($nRow > $nRead) ? $nRead : $nRow]
103 set nPayload [expr (($nPayload+3)/4) * 4]
106 0x04 c0 0x08 c1 0x10 c2 0x20 c3
107 0x40 c4 0x80 c5 0x100 c6 0x200 c7
109 if {$nPayload & $mask} { lappend cols $col }
112 # Create two SELECT statements. Statement $sql1 uses the sorter to sort
113 # $nRow records of a bit over $nPayload bytes each read from the "t1"
114 # table created by [populate_table] proc above. Rows are sorted in order
115 # of the integer field in each "t1" record.
117 # The second SQL statement sorts the same set of rows as the first, but
118 # uses a LIMIT clause, causing SQLite to use a temp table instead of the
119 # sorter for sorting.
121 set sql1 "SELECT a, [join $cols ,], b FROM t1 WHERE rowid<=$nRow ORDER BY a"
122 set sql2 "SELECT a FROM t1 WHERE rowid<=$nRow ORDER BY a LIMIT $nRead"
124 # Pass the two SQL statements to a helper command written in C. This
125 # command steps statement $sql1 $nRead times and compares the integer
126 # values in the rows returned with the results of executing $sql2. If
127 # the comparison fails (indicating some bug in the sorter), a Tcl
128 # exception is thrown.
130 sorter_test_sort4_helper db $sql1 $nRead $sql2
136 # do_sorter_test <testname> <args>...
138 # where <args> are any of the following switches:
140 # -rows N (number of rows to have sorter sort)
141 # -read N (number of rows to read out of sorter)
142 # -payload N (bytes of payload to read with each row)
143 # -cachesize N (Value for "PRAGMA cache_size = ?")
144 # -repeats N (number of times to repeat test)
145 # -fakeheap BOOL (true to use separate allocations for in-memory records)
147 proc do_sorter_test {tn args} {
152 set a(-cachesize) 100
155 foreach {s val} $args {
156 if {[info exists a($s)]==0} {
158 set optlist "[join [array names a] ,] or -cachesize"
159 error "Unknown option $s, expected $optlist"
163 if {[permutation] == "memsys3" || [permutation] == "memsys5"} {
166 if {$a(-fakeheap)} { sorter_test_fakeheap 1 }
169 db eval "PRAGMA cache_size = $a(-cachesize)"
170 do_test $tn [subst -nocommands {
171 for {set i 0} {[set i] < $a(-repeats)} {incr i} {
172 sorter_test $a(-rows) $a(-read) $a(-payload)
176 if {$a(-fakeheap)} { sorter_test_fakeheap 0 }
179 proc clock_seconds {} {
180 db one {SELECT strftime('%s')}
183 #-------------------------------------------------------------------------
186 # Create a test database.
188 execsql "PRAGMA page_size = 4096"
189 populate_table 100000 500
192 set iTimeLimit [expr [clock_seconds] + $SORT4TIMEOUT]
194 for {set t 2} {1} {incr tn} {
195 do_sorter_test $t.2 -repeats 10 -rows 1000 -read 100
196 do_sorter_test $t.3 -repeats 10 -rows 100000 -read 1000
197 do_sorter_test $t.4 -repeats 10 -rows 100000 -read 1000 -payload 500
198 do_sorter_test $t.5 -repeats 10 -rows 100000 -read 100000 -payload 8
199 do_sorter_test $t.6 -repeats 10 -rows 100000 -read 10 -payload 8
200 do_sorter_test $t.7 -repeats 10 -rows 10000 -read 10000 -payload 8 -fakeheap 1
201 do_sorter_test $t.8 -repeats 10 -rows 100000 -read 10000 -cachesize 250
203 set iNow [clock_seconds]
204 if {$iNow>=$iTimeLimit} break
205 do_test "$testprefix-([expr $iTimeLimit-$iNow] seconds remain)" {} {}