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# See the file LICENSE for redistribution information.
#
# Copyright (c) 2009 Oracle. All rights reserved.
#
# $Id$
#
#
# TEST mut001
# TEST Exercise the mutex API.
#
# TEST Allocate, lock, unlock, and free a bunch of mutexes.
# TEST Set basic configuration options and check mutex_stat and
# TEST the mutex getters for the correct values.
proc mut001 { } {
source ./include.tcl
env_cleanup $testdir
puts "Mut001: Basic mutex interface testing."
# Open an env.
set env [berkdb_env -create -home $testdir]
# Allocate, lock, unlock, and free a bunch of mutexes.
set nmutexes 100
puts "\tMut001.a: Allocate a bunch of mutexes."
for { set i 0 } { $i < $nmutexes } { incr i } {
set mutexid($i) [$env mutex]
}
puts "\tMut001.b: Lock the mutexes."
for { set i 0 } { $i < $nmutexes } { incr i } {
error_check_good mutex_lock [$env mutex_lock $mutexid($i)] 0
}
puts "\tMut001.c: Unlock the mutexes."
for { set i 0 } { $i < $nmutexes } { incr i } {
error_check_good mutex_unlock [$env mutex_unlock $mutexid($i)] 0
}
puts "\tMut001.d: Free the mutexes."
for { set i 0 } { $i < $nmutexes } { incr i } {
error_check_good mutex_free [$env mutex_free $mutexid($i)] 0
}
# Clean up the env. We'll need new envs to test the configuration
# options, because they cannot be set after the env is open.
error_check_good env_close [$env close] 0
env_cleanup $testdir
puts "\tMut001.e: Set the mutex alignment."
set mutex_align 8
set env [berkdb_env -create -home $testdir -mutex_set_align $mutex_align]
set stat_align [stat_field $env mutex_stat "Mutex align"]
set get_align [$env mutex_get_align]
error_check_good stat_align $stat_align $mutex_align
error_check_good get_align $get_align $mutex_align
# Find the number of mutexes allocated by default. We'll need
# this later, when we try the "mutex_set_increment" option.
set default_count [stat_field $env mutex_stat "Mutex count"]
error_check_good env_close [$env close] 0
env_cleanup $testdir
puts "\tMut001.f: Set the maximum number of mutexes."
set mutex_count 2000
set env [berkdb_env -create -home $testdir -mutex_set_max $mutex_count]
set stat_count [stat_field $env mutex_stat "Mutex count"]
set get_count [$env mutex_get_max]
error_check_good stat_count $stat_count $mutex_count
error_check_good get_count $get_count $mutex_count
error_check_good env_close [$env close] 0
env_cleanup $testdir
puts "\tMut001.g: Raise the maximum number of mutexes."
set mutex_incr 500
set mutex_count [expr $default_count + $mutex_incr]
set env [berkdb_env -create -home $testdir -mutex_set_incr $mutex_incr]
set stat_count [stat_field $env mutex_stat "Mutex count"]
error_check_good stat_increment $stat_count $mutex_count
set get_count [$env mutex_get_max]
error_check_good get_increment $get_count $mutex_count
error_check_good env_close [$env close] 0
env_cleanup $testdir
puts "\tMut001.h: Set and reset the number of TAS mutex spins."
set mutex_tas_spins 50
set env [berkdb_env -create -home $testdir -mutex_set_tas_spins $mutex_tas_spins]
set stat_spins [stat_field $env mutex_stat "Mutex TAS spins"]
error_check_good stat_spins $stat_spins $mutex_tas_spins
set get_spins [$env mutex_get_tas_spins]
error_check_good get_spins $get_spins $mutex_tas_spins
# TAS spins can be reset any time.
set mutex_tas_spins 1
error_check_good reset_spins [$env mutex_set_tas_spins $mutex_tas_spins] 0
set stat_spins [stat_field $env mutex_stat "Mutex TAS spins"]
error_check_good stat_spins_reset $stat_spins $mutex_tas_spins
set get_spins [$env mutex_get_tas_spins]
error_check_good get_spins_reset $get_spins $mutex_tas_spins
error_check_good env_close [$env close] 0
env_cleanup $testdir
}
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