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sqlite3

    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 1.1.1.1 2012/02/21 17:04:16 misho Exp $
   16: 
   17: set testdir [file dirname $argv0]
   18: 
   19: set do_not_use_codec 1
   20: source $testdir/tester.tcl
   21: if {[run_thread_tests]==0} { finish_test ; return }
   22: 
   23: 
   24: db close
   25: set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
   26: 
   27: set ::NTHREAD 10
   28: 
   29: do_test thread002.1 {
   30:   # Create 3 databases with identical schemas:
   31:   for {set ii 0} {$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: 
   43: set 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 $::DB
   68:   list OK
   69: }
   70: 
   71: set order_list [list {0 1 2} {0 2 1} {1 0 2} {1 2 0} {2 0 1} {2 1 0}]
   72: 
   73: array unset finished
   74: for {set ii 0} {$ii < $::NTHREAD} {incr ii} {
   75:   set order [lindex $order_list [expr $ii%6]]
   76:   thread_spawn finished($ii) $thread_procs "set order {$order}" $thread_program
   77: }
   78: 
   79: # Wait for all threads to finish,  then check they all returned "OK".
   80: #
   81: for {set i 0} {$i < $::NTHREAD} {incr i} {
   82:   if {![info exists finished($i)]} {
   83:     vwait finished($i)
   84:   }
   85:   do_test thread002.2.$i {
   86:     set ::finished($i)
   87:   } OK
   88: }
   89: 
   90: # Check all three databases are Ok.
   91: for {set ii 0} {$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: 
  103: sqlite3_enable_shared_cache $::enable_shared_cache
  104: set sqlite_open_file_count 0
  105: finish_test