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Diffstat (limited to 'bdb/test/lockscript.tcl')
-rw-r--r-- | bdb/test/lockscript.tcl | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/bdb/test/lockscript.tcl b/bdb/test/lockscript.tcl new file mode 100644 index 00000000000..bd07d80b54b --- /dev/null +++ b/bdb/test/lockscript.tcl @@ -0,0 +1,88 @@ +# See the file LICENSE for redistribution information. +# +# Copyright (c) 1996, 1997, 1998, 1999, 2000 +# Sleepycat Software. All rights reserved. +# +# $Id: lockscript.tcl,v 11.11 2000/03/24 19:53:39 krinsky Exp $ +# +# Random lock tester. +# Usage: lockscript dir numiters numobjs sleepint degree readratio +# dir: lock directory. +# numiters: Total number of iterations. +# numobjs: Number of objects on which to lock. +# sleepint: Maximum sleep interval. +# degree: Maximum number of locks to acquire at once +# readratio: Percent of locks that should be reads. + +source ./include.tcl +source $test_path/test.tcl + +set usage "lockscript dir numiters numobjs sleepint degree readratio" + +# Verify usage +if { $argc != 6 } { + puts stderr "FAIL:[timestamp] Usage: $usage" + exit +} + +# Initialize arguments +set dir [lindex $argv 0] +set numiters [ lindex $argv 1 ] +set numobjs [ lindex $argv 2 ] +set sleepint [ lindex $argv 3 ] +set degree [ lindex $argv 4 ] +set readratio [ lindex $argv 5 ] +set locker [pid] + +# Initialize random number generator +global rand_init +berkdb srand $rand_init + +puts -nonewline "Beginning execution for $locker: $numiters $numobjs " +puts "$sleepint $degree $readratio" +flush stdout + +set e [berkdb env -create -lock -home $dir] +error_check_good env_open [is_substr $e env] 1 + +for { set iter 0 } { $iter < $numiters } { incr iter } { + set nlocks [berkdb random_int 1 $degree] + # We will always lock objects in ascending order to avoid + # deadlocks. + set lastobj 1 + set locklist {} + for { set lnum 0 } { $lnum < $nlocks } { incr lnum } { + # Pick lock parameters + set obj [berkdb random_int $lastobj $numobjs] + set lastobj [expr $obj + 1] + set x [berkdb random_int 1 100 ] + if { $x <= $readratio } { + set rw read + } else { + set rw write + } + puts "[timestamp] $locker $lnum: $rw $obj" + + # Do get; add to list + set lockp [$e lock_get $rw $locker $obj] + lappend locklist $lockp + if {$lastobj > $numobjs} { + break + } + } + # Pick sleep interval + tclsleep [berkdb random_int 1 $sleepint] + + # Now release locks + puts "[timestamp] $locker released locks" + release_list $locklist + flush stdout +} + +set ret [$e close] +error_check_good env_close $ret 0 + +puts "[timestamp] $locker Complete" +flush stdout + +exit |