Import changeset

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