# See the file LICENSE for redistribution information.
#
# Copyright (c) 1996, 2011 Oracle and/or its affiliates.  All rights reserved.
#
# $Id$
#
# TEST	dead001
# TEST	Use two different configurations to test deadlock detection among a
# TEST	variable number of processes.  One configuration has the processes
# TEST	deadlocked in a ring.  The other has the processes all deadlocked on
# TEST	a single resource.
proc dead001 { { procs "2 4 10" } {tests "ring clump" } \
    {timeout 0} {tnum "001"} {pri 0} } {
	source ./include.tcl
	global lock_curid
	global lock_maxid

	if {$timeout > 0 && $pri > 0} {
		puts "Dead$tnum: Both timeout and priority cannot be set."
		return
	}

	set msg ""
	if { $pri == 1 } {
		set msg " with priority"
	}
	puts "Dead$tnum: Deadlock detector tests timeout $timeout"

	env_cleanup $testdir

	# Create the environment.
	puts "\tDead$tnum.a: creating environment"
	set env [berkdb_env -create \
	     -mode 0644 -lock -lock_timeout $timeout -home $testdir]
	error_check_good lock_env:open [is_valid_env $env] TRUE

	foreach t $tests {
		foreach n $procs {
			if {$timeout == 0 } {
				set dpid [exec $util_path/db_deadlock -v -t 0.100000 \
				    -h $testdir >& $testdir/dd.out &]
			} else {
				set dpid [exec $util_path/db_deadlock -v -t 0.100000 \
				    -ae -h $testdir >& $testdir/dd.out &]
			}

			sentinel_init
			set pidlist ""
			set ret [$env lock_id_set $lock_curid $lock_maxid]
			error_check_good lock_id_set $ret 0

			# Fire off the tests
			puts "\tDead$tnum: $n procs of test $t $msg"
			for { set i 0 } { $i < $n } { incr i } {
				set locker [$env lock_id]
				if {$pri == 1} {
					$env lock_set_priority $locker $i
				}      
				puts "$tclsh_path $test_path/wrap.tcl \
				    ddscript.tcl $testdir/dead$tnum.log.$i \
				    $testdir $t $locker $i $n"
				set p [exec $tclsh_path $test_path/wrap.tcl \
					ddscript.tcl $testdir/dead$tnum.log.$i \
					$testdir $t $locker $i $n &]
				lappend pidlist $p
			}
			watch_procs $pidlist 5

			# Now check output
			# dead: the number of aborted lockers
			# clean: the number of non-aborted lockers
			# killed: the highest aborted locker
			# kept: the highest non-aborted locker
			# In a ring, only one locker is aborted.  If testing
			# priorities, it should be 0, the lowest priority.
			# In a clump, only one locker is not aborted. If testing
			# priorities, it should be n, the highest priority.
			set dead 0
			set clean 0
			set other 0
			set killed $n
			set kept $n
			for { set i 0 } { $i < $n } { incr i } {
				set did [open $testdir/dead$tnum.log.$i]
				while { [gets $did val] != -1 } {
					# If the line comes from the 
					# profiling tool, ignore it. 
					if { [string first \
					    "profiling:" $val] == 0 } { 
						continue
					}
					switch $val {
						DEADLOCK { 
							incr dead
							set killed $i
						}
						1 {
							incr clean
							set kept $i
						}
						default { incr other }
					}
				}
				close $did
			}
			tclkill $dpid
			puts "\tDead$tnum: dead check..."
			dead_check $t $n $timeout $dead $clean $other
			if {$pri == 1} {
				if {$t == "ring"} {
					# Only the lowest priority killed in a
	       				# ring
	       				error_check_good low_priority_killed \
			       		    $killed 0
				} elseif {$t == "clump"} {
					# All but the highest priority killed in a
	       				# clump
			       		error_check_good high_priority_kept \
			       		    $kept [expr $n - 1]
				}
			}
		}
	}

	# Windows needs files closed before deleting files, so pause a little
	tclsleep 3
	fileremove -f $testdir/dd.out
	# Remove log files
	for { set i 0 } { $i < $n } { incr i } {
		fileremove -f $testdir/dead$tnum.log.$i
	}
	error_check_good lock_env:close [$env close] 0
}