# 2007 September 10 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # # This test attempts to deadlock SQLite in shared-cache mode. # # # $Id: thread002.test,v 1.1 2007/09/10 10:53:02 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl source $testdir/thread_common.tcl if {[info commands sqlthread] eq ""} { return } db close sqlite3_enable_shared_cache 1 set ::NTHREAD 10 do_test thread002.1 { # Create 3 databases with identical schemas: for {set ii 0} {$ii < 3} {incr ii} { file delete -force test${ii}.db sqlite3 db test${ii}.db execsql { CREATE TABLE t1(k, v); CREATE INDEX t1_i ON t1(v); INSERT INTO t1(v) VALUES(1.0); } db close } } {} set thread_program { set ::DB [sqlite3_open test.db] for {set ii 1} {$ii <= 3} {incr ii} { set T [lindex $order [expr $ii-1]] execsql "ATTACH 'test${T}.db' AS aux${ii}" } for {set ii 0} {$ii < 100} {incr ii} { execsql { SELECT * FROM aux1.t1 } execsql { INSERT INTO aux1.t1(v) SELECT sum(v) FROM aux2.t1 } execsql { SELECT * FROM aux2.t1 } execsql { INSERT INTO aux2.t1(v) SELECT sum(v) FROM aux3.t1 } execsql { SELECT * FROM aux3.t1 } execsql { INSERT INTO aux3.t1(v) SELECT sum(v) FROM aux1.t1 } execsql { CREATE TABLE aux1.t2(a,b) } execsql { DROP TABLE aux1.t2 } # if {($ii%10)==0} {puts -nonewline . ; flush stdout} puts -nonewline . ; flush stdout } sqlite3_close $::DB list OK } set order_list [list {0 1 2} {0 2 1} {1 0 2} {1 2 0} {2 0 1} {2 1 0}] array unset finished for {set ii 0} {$ii < $::NTHREAD} {incr ii} { set order [lindex $order_list [expr $ii%6]] thread_spawn finished($ii) $thread_procs "set order {$order}" $thread_program } # Wait for all threads to finish, then check they all returned "OK". # for {set i 0} {$i < $::NTHREAD} {incr i} { if {![info exists finished($i)]} { vwait finished($i) } do_test thread001.2.$i { set ::finished($i) } OK } # Check all three databases are Ok. for {set ii 0} {$ii < 3} {incr ii} { do_test thread002.3.$ii { sqlite3 db test${ii}.db set res [list \ [execsql {SELECT count(*) FROM t1}] \ [execsql {PRAGMA integrity_check}] \ ] db close set res } [list [expr 1 + $::NTHREAD*100] ok] } finish_test