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 # TESTRUNNER: superslow
13 # This file implements regression tests for SQLite library.
15 # The tests in this file are brute force tests of the multi-threaded
19 set testdir [file dirname $argv0]
20 source $testdir/tester.tcl
24 sqlite3_config_pmasz 10
29 # Configure the sorter to use 3 background threads.
31 # EVIDENCE-OF: R-19249-32353 SQLITE_LIMIT_WORKER_THREADS The maximum
32 # number of auxiliary worker threads that a single prepared statement
35 do_test sort4-init001 {
36 db eval {PRAGMA threads=5}
37 sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS -1
39 do_test sort4-init002 {
40 sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS 3
41 db eval {PRAGMA threads}
45 # Minimum number of seconds to run for. If the value is 0, each test
46 # is run exactly once. Otherwise, tests are repeated until the timeout
49 if {[permutation] == "multithread"} { set SORT4TIMEOUT 300 }
51 #--------------------------------------------------------------------
52 # Set up a table "t1" containing $nRow rows. Each row contains also
53 # contains blob fields that collectively contain at least $nPayload
54 # bytes of content. The table schema is as follows:
56 # CREATE TABLE t1(a INTEGER, <extra-columns>, b INTEGER);
58 # For each row, the values of columns "a" and "b" are set to the same
59 # pseudo-randomly selected integer. The "extra-columns", of which there
60 # are at most eight, are named c0, c1, c2 etc. Column c0 contains a 4
61 # byte string. Column c1 an 8 byte string. Field c2 16 bytes, and so on.
63 # This table is intended to be used for testing queries of the form:
65 # SELECT a, <cols>, b FROM t1 ORDER BY a;
67 # The test code checks that rows are returned in order, and that the
68 # values of "a" and "b" are the same for each row (the idea being that
69 # if field "b" at the end of the sorter record has not been corrupted,
70 # the rest of the record is probably Ok as well).
72 proc populate_table {nRow nPayload} {
76 for {set nCol 0} {$n < $nPayload} {incr nCol} {
77 incr n [expr (4 << $nCol)]
80 set cols [lrange [list xxx c0 c1 c2 c3 c4 c5 c6 c7] 1 $nCol]
81 set data [lrange [list xxx \
82 randomblob(4) randomblob(8) randomblob(16) randomblob(32) \
83 randomblob(64) randomblob(128) randomblob(256) randomblob(512) \
86 execsql { DROP TABLE IF EXISTS t1 }
89 execsql "CREATE TABLE t1(a, [join $cols ,], b);"
90 set insert "INSERT INTO t1 VALUES(:k, [join $data ,], :k)"
91 for {set i 0} {$i < $nRow} {incr i} {
92 set k [expr int(rand()*1000000000)]
98 # Helper for [do_sorter_test]
100 proc sorter_test {nRow nRead nPayload} {
103 set nLoad [expr ($nRow > $nRead) ? $nRead : $nRow]
105 set nPayload [expr (($nPayload+3)/4) * 4]
108 0x04 c0 0x08 c1 0x10 c2 0x20 c3
109 0x40 c4 0x80 c5 0x100 c6 0x200 c7
111 if {$nPayload & $mask} { lappend cols $col }
114 # Create two SELECT statements. Statement $sql1 uses the sorter to sort
115 # $nRow records of a bit over $nPayload bytes each read from the "t1"
116 # table created by [populate_table] proc above. Rows are sorted in order
117 # of the integer field in each "t1" record.
119 # The second SQL statement sorts the same set of rows as the first, but
120 # uses a LIMIT clause, causing SQLite to use a temp table instead of the
121 # sorter for sorting.
123 set sql1 "SELECT a, [join $cols ,], b FROM t1 WHERE rowid<=$nRow ORDER BY a"
124 set sql2 "SELECT a FROM t1 WHERE rowid<=$nRow ORDER BY a LIMIT $nRead"
126 # Pass the two SQL statements to a helper command written in C. This
127 # command steps statement $sql1 $nRead times and compares the integer
128 # values in the rows returned with the results of executing $sql2. If
129 # the comparison fails (indicating some bug in the sorter), a Tcl
130 # exception is thrown.
132 sorter_test_sort4_helper db $sql1 $nRead $sql2
138 # do_sorter_test <testname> <args>...
140 # where <args> are any of the following switches:
142 # -rows N (number of rows to have sorter sort)
143 # -read N (number of rows to read out of sorter)
144 # -payload N (bytes of payload to read with each row)
145 # -cachesize N (Value for "PRAGMA cache_size = ?")
146 # -repeats N (number of times to repeat test)
147 # -fakeheap BOOL (true to use separate allocations for in-memory records)
149 proc do_sorter_test {tn args} {
154 set a(-cachesize) 100
157 foreach {s val} $args {
158 if {[info exists a($s)]==0} {
160 set optlist "[join [array names a] ,] or -cachesize"
161 error "Unknown option $s, expected $optlist"
165 if {[permutation] == "memsys3" || [permutation] == "memsys5"} {
168 if {$a(-fakeheap)} { sorter_test_fakeheap 1 }
171 db eval "PRAGMA cache_size = $a(-cachesize)"
172 do_test $tn [subst -nocommands {
173 for {set i 0} {[set i] < $a(-repeats)} {incr i} {
174 sorter_test $a(-rows) $a(-read) $a(-payload)
178 if {$a(-fakeheap)} { sorter_test_fakeheap 0 }
181 proc clock_seconds {} {
182 db one {SELECT strftime('%s')}
185 #-------------------------------------------------------------------------
188 # Create a test database.
190 execsql "PRAGMA page_size = 4096"
191 populate_table 100000 500
194 set iTimeLimit [expr [clock_seconds] + $SORT4TIMEOUT]
196 for {set t 2} {1} {incr tn} {
197 do_sorter_test $t.2 -repeats 10 -rows 1000 -read 100
198 do_sorter_test $t.3 -repeats 10 -rows 100000 -read 1000
199 do_sorter_test $t.4 -repeats 10 -rows 100000 -read 1000 -payload 500
200 do_sorter_test $t.5 -repeats 10 -rows 100000 -read 100000 -payload 8
201 do_sorter_test $t.6 -repeats 10 -rows 100000 -read 10 -payload 8
202 do_sorter_test $t.7 -repeats 10 -rows 10000 -read 10000 -payload 8 -fakeheap 1
203 do_sorter_test $t.8 -repeats 10 -rows 100000 -read 10000 -cachesize 250
205 set iNow [clock_seconds]
206 if {$iNow>=$iTimeLimit} break
207 do_test "$testprefix-([expr $iTimeLimit-$iNow] seconds remain)" {} {}