xref: /sqlite-3.40.0/test/thread002.test (revision 50f79f56) 
1# 2007 September 10
2#
3# The author disclaims copyright to this source code.  In place of
4# 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#
12#   This test attempts to deadlock SQLite in shared-cache mode.
13#
14#
15# $Id: thread002.test,v 1.9 2009/03/26 14:48:07 danielk1977 Exp $
16
17set testdir [file dirname $argv0]
18
19set do_not_use_codec 1
20source $testdir/tester.tcl
21if {[run_thread_tests]==0} { finish_test ; return }
22
23
24db close
25set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
26
27set ::NTHREAD 10
28
29do_test thread002.1 {
30  # Create 3 databases with identical schemas:
31  for {set ii 0} {$ii < 3} {incr ii} {
32    forcedelete test${ii}.db
33    sqlite3 db test${ii}.db
34    execsql {
35      CREATE TABLE t1(k, v);
36      CREATE INDEX t1_i ON t1(v);
37      INSERT INTO t1(v) VALUES(1.0);
38    }
39    db close
40  }
41} {}
42
43set thread_program {
44  set ::DB [sqlite3_open test.db]
45  for {set ii 1} {$ii <= 3} {incr ii} {
46    set T [lindex $order [expr $ii-1]]
47    execsql "ATTACH 'test${T}.db' AS aux${ii}"
48  }
49
50  for {set ii 0} {$ii < 100} {incr ii} {
51    execsql { SELECT * FROM aux1.t1 }
52    execsql { INSERT INTO aux1.t1(v) SELECT sum(v) FROM aux2.t1 }
53
54    execsql { SELECT * FROM aux2.t1 }
55    execsql { INSERT INTO aux2.t1(v) SELECT sum(v) FROM aux3.t1 }
56
57    execsql { SELECT * FROM aux3.t1 }
58    execsql { INSERT INTO aux3.t1(v) SELECT sum(v) FROM aux1.t1 }
59
60    execsql { CREATE TABLE IF NOT EXISTS aux1.t2(a,b) }
61    execsql { DROP TABLE IF EXISTS aux1.t2 }
62
63    # if {($ii%10)==0} {puts -nonewline . ; flush stdout}
64    puts -nonewline . ; flush stdout
65  }
66
67  sqlite3_close $::DB
68  list OK
69}
70
71set order_list [list {0 1 2} {0 2 1} {1 0 2} {1 2 0} {2 0 1} {2 1 0}]
72
73array unset finished
74for {set ii 0} {$ii < $::NTHREAD} {incr ii} {
75  set order [lindex $order_list [expr $ii%6]]
76  thread_spawn finished($ii) $thread_procs "set order {$order}" $thread_program
77}
78
79# Wait for all threads to finish,  then check they all returned "OK".
80#
81for {set i 0} {$i < $::NTHREAD} {incr i} {
82  if {![info exists finished($i)]} {
83    vwait finished($i)
84  }
85  do_test thread002.2.$i {
86    set ::finished($i)
87  } OK
88}
89
90# Check all three databases are Ok.
91for {set ii 0} {$ii < 3} {incr ii} {
92  do_test thread002.3.$ii {
93    sqlite3 db test${ii}.db
94    set res [list                         \
95      [execsql {SELECT count(*) FROM t1}] \
96      [execsql {PRAGMA integrity_check}]  \
97    ]
98    db close
99    set res
100  } [list [expr 1 + $::NTHREAD*100] ok]
101}
102
103sqlite3_enable_shared_cache $::enable_shared_cache
104set sqlite_open_file_count 0
105finish_test
106