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113 lines
3.2 KiB
Tcl
113 lines
3.2 KiB
Tcl
# See the file LICENSE for redistribution information.
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#
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# Copyright (c) 1996, 2012 Oracle and/or its affiliates. All rights reserved.
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#
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# $Id$
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#
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# Deadlock Test 4.
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# This test is designed to make sure that we handle youngest and oldest
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# deadlock detection even when the youngest and oldest transactions in the
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# system are not involved in the deadlock (that is, we want to abort the
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# youngest/oldest which is actually involved in the deadlock, not simply
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# the youngest/oldest in the system).
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# Since this is used for transaction systems, the locker ID is what we
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# use to identify age (smaller number is older).
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#
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# The set up is that we have a total of 6 processes. The oldest (locker 0)
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# and the youngest (locker 5) simply acquire a lock, hold it for a long time
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# and then release it. The rest form a ring, obtaining lock N and requesting
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# a lock on (N+1) mod 4. The deadlock detector ought to pick locker 1 or 4
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# to abort and not 0 or 5.
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proc dead004 { {tnum "004"} } {
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source ./include.tcl
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global lock_curid
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global lock_maxid
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foreach a { o y } {
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puts "Dead$tnum: Deadlock detector test -a $a"
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env_cleanup $testdir
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# Create the environment.
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puts "\tDead$tnum.a: creating environment"
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set env [berkdb_env -create -mode 0644 -lock -home $testdir]
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error_check_good lock_env:open [is_valid_env $env] TRUE
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set dpid [exec $util_path/db_deadlock -v -t 5 -a $a \
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-h $testdir >& $testdir/dd.out &]
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set procs 6
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foreach n $procs {
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sentinel_init
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set pidlist ""
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set ret [$env lock_id_set $lock_curid $lock_maxid]
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error_check_good lock_id_set $ret 0
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# Fire off the tests
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puts "\tDead$tnum: $n procs"
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for { set i 0 } { $i < $n } { incr i } {
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set locker [$env lock_id]
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puts "$tclsh_path $test_path/wrap.tcl \
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$testdir/dead$tnum.log.$i \
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ddoyscript.tcl $testdir $locker $n $a $i"
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set p [exec $tclsh_path \
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$test_path/wrap.tcl \
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ddoyscript.tcl $testdir/dead$tnum.log.$i \
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$testdir $locker $n $a $i &]
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lappend pidlist $p
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}
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watch_procs $pidlist 5
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}
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# Now check output
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set dead 0
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set clean 0
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set other 0
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for { set i 0 } { $i < $n } { incr i } {
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set did [open $testdir/dead$tnum.log.$i]
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while { [gets $did val] != -1 } {
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# If the line comes from the
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# profiling tool, ignore it.
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if { [string first \
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"profiling:" $val] == 0 } {
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continue
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}
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switch $val {
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DEADLOCK { incr dead }
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1 { incr clean }
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default { incr other }
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}
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}
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close $did
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}
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tclkill $dpid
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puts "\tDead$tnum: dead check..."
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dead_check oldyoung $n 0 $dead $clean $other
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# Now verify that neither the oldest nor the
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# youngest were the deadlock.
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set did [open $testdir/dead$tnum.log.0]
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error_check_bad file:young [gets $did val] -1
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error_check_good read:young $val 1
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close $did
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set did [open $testdir/dead$tnum.log.[expr $procs - 1]]
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error_check_bad file:old [gets $did val] -1
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error_check_good read:old $val 1
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close $did
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# Windows needs files closed before deleting files,
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# so pause a little
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tclsleep 2
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fileremove -f $testdir/dd.out
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# Remove log files
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for { set i 0 } { $i < $n } { incr i } {
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fileremove -f $testdir/dead$tnum.log.$i
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}
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error_check_good lock_env:close [$env close] 0
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}
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}
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