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ruby--ruby/test/ruby/test_thread.rb
normal 37bba27b2c test/ruby/test_thread.rb (test_fork_while_parent_locked): rewrite to avoid OOM
Instead of using a torture test, trigger the condition for the old
segfault in [Bug #15383] exactly.

[ruby-core:90676] [Bug #15430]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66508 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-12-23 08:42:44 +00:00

1399 lines
34 KiB
Ruby

# -*- coding: us-ascii -*-
# frozen_string_literal: false
require 'test/unit'
require "rbconfig/sizeof"
require "timeout"
class TestThread < Test::Unit::TestCase
class Thread < ::Thread
Threads = []
def self.new(*)
th = super
Threads << th
th
end
end
def setup
Thread::Threads.clear
end
def teardown
Thread::Threads.each do |t|
t.kill if t.alive?
begin
t.join
rescue Exception
end
end
end
def test_inspect
th = Module.new {break module_eval("class C\u{30b9 30ec 30c3 30c9} < Thread; self; end")}.start{}
assert_match(/::C\u{30b9 30ec 30c3 30c9}:/, th.inspect)
ensure
th.join
end
def test_inspect_with_fiber
inspect1 = inspect2 = nil
Thread.new{
inspect1 = Thread.current.inspect
Fiber.new{
inspect2 = Thread.current.inspect
}.resume
}.join
assert_equal inspect1, inspect2, '[Bug #13689]'
end
def test_main_thread_variable_in_enumerator
assert_equal Thread.main, Thread.current
Thread.current.thread_variable_set :foo, "bar"
thread, value = Fiber.new {
Fiber.yield [Thread.current, Thread.current.thread_variable_get(:foo)]
}.resume
assert_equal Thread.current, thread
assert_equal Thread.current.thread_variable_get(:foo), value
end
def test_thread_variable_in_enumerator
Thread.new {
Thread.current.thread_variable_set :foo, "bar"
thread, value = Fiber.new {
Fiber.yield [Thread.current, Thread.current.thread_variable_get(:foo)]
}.resume
assert_equal Thread.current, thread
assert_equal Thread.current.thread_variable_get(:foo), value
}.join
end
def test_thread_variables
assert_equal [], Thread.new { Thread.current.thread_variables }.join.value
t = Thread.new {
Thread.current.thread_variable_set(:foo, "bar")
Thread.current.thread_variables
}
assert_equal [:foo], t.join.value
end
def test_thread_variable?
Thread.new { assert_not_send([Thread.current, :thread_variable?, "foo"]) }.value
t = Thread.new {
Thread.current.thread_variable_set("foo", "bar")
}.join
assert_send([t, :thread_variable?, "foo"])
assert_send([t, :thread_variable?, :foo])
assert_not_send([t, :thread_variable?, :bar])
end
def test_thread_variable_strings_and_symbols_are_the_same_key
t = Thread.new {}.join
t.thread_variable_set("foo", "bar")
assert_equal "bar", t.thread_variable_get(:foo)
end
def test_thread_variable_frozen
t = Thread.new { }.join
t.freeze
assert_raise(FrozenError) do
t.thread_variable_set(:foo, "bar")
end
end
def test_mutex_synchronize
m = Thread::Mutex.new
r = 0
num_threads = 10
loop=100
(1..num_threads).map{
Thread.new{
loop.times{
m.synchronize{
tmp = r
# empty and waste loop for making thread preemption
100.times {
}
r = tmp + 1
}
}
}
}.each{|e|
e.join
}
assert_equal(num_threads*loop, r)
end
def test_mutex_synchronize_yields_no_block_params
bug8097 = '[ruby-core:53424] [Bug #8097]'
assert_empty(Thread::Mutex.new.synchronize {|*params| break params}, bug8097)
end
def test_local_barrier
dir = File.dirname(__FILE__)
lbtest = File.join(dir, "lbtest.rb")
$:.unshift File.join(File.dirname(dir), 'ruby')
$:.shift
3.times {
`#{EnvUtil.rubybin} #{lbtest}`
assert_not_predicate($?, :coredump?, '[ruby-dev:30653]')
}
end
def test_priority
c1 = c2 = 0
run = true
t1 = Thread.new { c1 += 1 while run }
t1.priority = 3
t2 = Thread.new { c2 += 1 while run }
t2.priority = -3
assert_equal(3, t1.priority)
assert_equal(-3, t2.priority)
sleep 0.5
5.times do
assert_not_predicate(t1, :stop?)
assert_not_predicate(t2, :stop?)
break if c1 > c2
sleep 0.1
end
run = false
t1.kill
t2.kill
assert_operator(c1, :>, c2, "[ruby-dev:33124]") # not guaranteed
t1.join
t2.join
end
def test_new
assert_raise(ThreadError) do
Thread.new
end
t1 = Thread.new { sleep }
assert_raise(ThreadError) do
t1.instance_eval { initialize { } }
end
t2 = Thread.new(&method(:sleep).to_proc)
assert_raise(ThreadError) do
t2.instance_eval { initialize { } }
end
ensure
t1&.kill&.join
t2&.kill&.join
end
def test_new_symbol_proc
bug = '[ruby-core:80147] [Bug #13313]'
assert_ruby_status([], "#{<<-"begin;"}\n#{<<-'end;'}", bug)
begin;
exit("1" == Thread.start(1, &:to_s).value)
end;
end
def test_join
t = Thread.new { sleep }
assert_nil(t.join(0.05))
ensure
t&.kill&.join
end
def test_join2
ok = false
t1 = Thread.new { ok = true; sleep }
Thread.pass until ok
Thread.pass until t1.stop?
t2 = Thread.new do
Thread.pass while ok
t1.join(0.01)
end
t3 = Thread.new do
ok = false
t1.join
end
assert_nil(t2.value)
t1.wakeup
assert_equal(t1, t3.value)
ensure
t1&.kill
t2&.kill
t3&.kill
end
{ 'FIXNUM_MAX' => RbConfig::LIMITS['FIXNUM_MAX'],
'UINT64_MAX' => RbConfig::LIMITS['UINT64_MAX'],
'INFINITY' => Float::INFINITY
}.each do |name, limit|
define_method("test_join_limit_#{name}") do
t = Thread.new {}
assert_same t, t.join(limit), "limit=#{limit.inspect}"
end
end
{ 'minus_1' => -1,
'minus_0_1' => -0.1,
'FIXNUM_MIN' => RbConfig::LIMITS['FIXNUM_MIN'],
'INT64_MIN' => RbConfig::LIMITS['INT64_MIN'],
'minus_INFINITY' => -Float::INFINITY
}.each do |name, limit|
define_method("test_join_limit_negative_#{name}") do
t = Thread.new { sleep }
begin
assert_nothing_raised(Timeout::Error) do
Timeout.timeout(30) do
assert_nil t.join(limit), "limit=#{limit.inspect}"
end
end
ensure
t.kill
end
end
end
def test_kill_main_thread
assert_in_out_err([], <<-INPUT, %w(1), [])
p 1
Thread.kill Thread.current
p 2
INPUT
end
def test_kill_wrong_argument
bug4367 = '[ruby-core:35086]'
assert_raise(TypeError, bug4367) {
Thread.kill(nil)
}
o = Object.new
assert_raise(TypeError, bug4367) {
Thread.kill(o)
}
end
def test_kill_thread_subclass
c = Class.new(Thread)
t = c.new { sleep 10 }
assert_nothing_raised { Thread.kill(t) }
assert_equal(nil, t.value)
end
def test_exit
s = 0
Thread.new do
s += 1
Thread.exit
s += 2
end.join
assert_equal(1, s)
end
def test_wakeup
s = 0
t = Thread.new do
s += 1
Thread.stop
s += 1
end
Thread.pass until t.stop?
sleep 1 if RubyVM::MJIT.enabled? # t.stop? behaves unexpectedly with --jit-wait
assert_equal(1, s)
t.wakeup
Thread.pass while t.alive?
assert_equal(2, s)
assert_raise(ThreadError) { t.wakeup }
ensure
t&.kill&.join
end
def test_stop
assert_in_out_err([], <<-INPUT, %w(2), [])
begin
Thread.stop
p 1
rescue ThreadError
p 2
end
INPUT
end
def test_list
assert_in_out_err([], <<-INPUT) do |r, e|
t1 = Thread.new { sleep }
Thread.pass
t2 = Thread.new { loop { Thread.pass } }
Thread.new { }.join
p [Thread.current, t1, t2].map{|t| t.object_id }.sort
p Thread.list.map{|t| t.object_id }.sort
INPUT
assert_equal(r.first, r.last)
assert_equal([], e)
end
end
def test_main
assert_in_out_err([], <<-INPUT, %w(true false), [])
p Thread.main == Thread.current
Thread.new { p Thread.main == Thread.current }.join
INPUT
end
def test_abort_on_exception
assert_in_out_err([], <<-INPUT, %w(false 1), [])
p Thread.abort_on_exception
begin
t = Thread.new {
Thread.current.report_on_exception = false
raise
}
Thread.pass until t.stop?
p 1
rescue
p 2
end
INPUT
assert_in_out_err([], <<-INPUT, %w(true 2), [])
Thread.abort_on_exception = true
p Thread.abort_on_exception
begin
Thread.new {
Thread.current.report_on_exception = false
raise
}
sleep 0.5
p 1
rescue
p 2
end
INPUT
assert_in_out_err(%w(--disable-gems -d), <<-INPUT, %w(false 2), %r".+")
p Thread.abort_on_exception
begin
t = Thread.new { raise }
Thread.pass until t.stop?
p 1
rescue
p 2
end
INPUT
assert_in_out_err([], <<-INPUT, %w(false true 2), [])
p Thread.abort_on_exception
begin
ok = false
t = Thread.new {
Thread.current.report_on_exception = false
Thread.pass until ok
raise
}
t.abort_on_exception = true
p t.abort_on_exception
ok = 1
sleep 1
p 1
rescue
p 2
end
INPUT
end
def test_report_on_exception
assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
begin;
q1 = Thread::Queue.new
q2 = Thread::Queue.new
assert_equal(true, Thread.report_on_exception,
"global flag is true by default")
assert_equal(true, Thread.current.report_on_exception,
"the main thread has report_on_exception=true")
Thread.report_on_exception = true
Thread.current.report_on_exception = false
assert_equal(true,
Thread.start {Thread.current.report_on_exception}.value,
"should not inherit from the parent thread but from the global flag")
assert_warn("", "exception should be ignored silently when false") {
th = Thread.start {
Thread.current.report_on_exception = false
q1.push(Thread.current.report_on_exception)
raise "report 1"
}
assert_equal(false, q1.pop)
Thread.pass while th.alive?
assert_raise(RuntimeError) { th.join }
}
assert_warn(/report 2/, "exception should be reported when true") {
th = Thread.start {
q1.push(Thread.current.report_on_exception = true)
raise "report 2"
}
assert_equal(true, q1.pop)
Thread.pass while th.alive?
assert_raise(RuntimeError) { th.join }
}
assert_warn("", "the global flag should not affect already started threads") {
Thread.report_on_exception = false
th = Thread.start {
q2.pop
q1.push(Thread.current.report_on_exception)
raise "report 3"
}
q2.push(Thread.report_on_exception = true)
assert_equal(false, q1.pop)
Thread.pass while th.alive?
assert_raise(RuntimeError) { th.join }
}
assert_warn(/report 4/, "should defaults to the global flag at the start") {
Thread.report_on_exception = true
th = Thread.start {
q1.push(Thread.current.report_on_exception)
raise "report 4"
}
assert_equal(true, q1.pop)
Thread.pass while th.alive?
assert_raise(RuntimeError) { th.join }
}
assert_warn(/report 5/, "should first report and then raise with report_on_exception + abort_on_exception") {
th = Thread.start {
Thread.current.report_on_exception = true
Thread.current.abort_on_exception = true
q2.pop
raise "report 5"
}
assert_raise_with_message(RuntimeError, "report 5") {
q2.push(true)
Thread.pass while th.alive?
}
assert_raise(RuntimeError) { th.join }
}
end;
end
def test_status_and_stop_p
a = ::Thread.new {
Thread.current.report_on_exception = false
raise("die now")
}
b = Thread.new { Thread.stop }
c = Thread.new { Thread.exit }
e = Thread.current
Thread.pass while a.alive? or !b.stop? or c.alive?
assert_equal(nil, a.status)
assert_predicate(a, :stop?)
assert_equal("sleep", b.status)
assert_predicate(b, :stop?)
assert_equal(false, c.status)
assert_match(/^#<TestThread::Thread:.* dead>$/, c.inspect)
assert_predicate(c, :stop?)
es1 = e.status
es2 = e.stop?
assert_equal(["run", false], [es1, es2])
assert_raise(RuntimeError) { a.join }
ensure
b&.kill&.join
c&.join
end
def test_switch_while_busy_loop
bug1402 = "[ruby-dev:38319] [Bug #1402]"
flag = true
th = Thread.current
waiter = Thread.start {
sleep 0.1
flag = false
sleep 1
th.raise(bug1402)
}
assert_nothing_raised(RuntimeError, bug1402) do
nil while flag
end
assert(!flag, bug1402)
ensure
waiter&.kill&.join
end
def test_safe_level
ok = false
t = Thread.new do
EnvUtil.suppress_warning do
$SAFE = 1
end
ok = true
sleep
end
Thread.pass until ok
assert_equal($SAFE, Thread.current.safe_level)
assert_equal($SAFE, t.safe_level)
ensure
$SAFE = 0
t&.kill&.join
end
def test_thread_local
t = Thread.new { sleep }
assert_equal(false, t.key?(:foo))
t["foo"] = "foo"
t["bar"] = "bar"
t["baz"] = "baz"
assert_equal(true, t.key?(:foo))
assert_equal(true, t.key?("foo"))
assert_equal(false, t.key?(:qux))
assert_equal(false, t.key?("qux"))
assert_equal([:foo, :bar, :baz].sort, t.keys.sort)
ensure
t&.kill&.join
end
def test_thread_local_fetch
t = Thread.new { sleep }
assert_equal(false, t.key?(:foo))
t["foo"] = "foo"
t["bar"] = "bar"
t["baz"] = "baz"
x = nil
assert_equal("foo", t.fetch(:foo, 0))
assert_equal("foo", t.fetch(:foo) {x = true})
assert_nil(x)
assert_equal("foo", t.fetch("foo", 0))
assert_equal("foo", t.fetch("foo") {x = true})
assert_nil(x)
x = nil
assert_equal(0, t.fetch(:qux, 0))
assert_equal(1, t.fetch(:qux) {x = 1})
assert_equal(1, x)
assert_equal(2, t.fetch("qux", 2))
assert_equal(3, t.fetch("qux") {x = 3})
assert_equal(3, x)
e = assert_raise(KeyError) {t.fetch(:qux)}
assert_equal(:qux, e.key)
assert_equal(t, e.receiver)
ensure
t&.kill&.join
end
def test_thread_local_security
Thread.new do
Thread.current[:foo] = :bar
Thread.current.freeze
assert_raise(FrozenError) do
Thread.current[:foo] = :baz
end
end.join
end
def test_thread_local_dynamic_symbol
bug10667 = '[ruby-core:67185] [Bug #10667]'
t = Thread.new {}.join
key_str = "foo#{rand}"
key_sym = key_str.to_sym
t.thread_variable_set(key_str, "bar")
assert_equal("bar", t.thread_variable_get(key_str), "#{bug10667}: string key")
assert_equal("bar", t.thread_variable_get(key_sym), "#{bug10667}: symbol key")
end
def test_select_wait
assert_nil(IO.select(nil, nil, nil, 0.001))
t = Thread.new do
IO.select(nil, nil, nil, nil)
end
Thread.pass until t.stop?
assert_predicate(t, :alive?)
ensure
t&.kill
end
def test_mutex_deadlock
m = Thread::Mutex.new
m.synchronize do
assert_raise(ThreadError) do
m.synchronize do
assert(false)
end
end
end
end
def test_mutex_interrupt
m = Thread::Mutex.new
m.lock
t = Thread.new do
m.lock
:foo
end
Thread.pass until t.stop?
t.kill
assert_nil(t.value)
end
def test_mutex_illegal_unlock
m = Thread::Mutex.new
m.lock
Thread.new do
assert_raise(ThreadError) do
m.unlock
end
end.join
end
def test_mutex_fifo_like_lock
m1 = Thread::Mutex.new
m2 = Thread::Mutex.new
m1.lock
m2.lock
m1.unlock
m2.unlock
assert_equal(false, m1.locked?)
assert_equal(false, m2.locked?)
m3 = Thread::Mutex.new
m1.lock
m2.lock
m3.lock
m1.unlock
m2.unlock
m3.unlock
assert_equal(false, m1.locked?)
assert_equal(false, m2.locked?)
assert_equal(false, m3.locked?)
end
def test_mutex_trylock
m = Thread::Mutex.new
assert_equal(true, m.try_lock)
assert_equal(false, m.try_lock, '[ruby-core:20943]')
Thread.new{
assert_equal(false, m.try_lock)
}.join
m.unlock
end
def test_recursive_outer
arr = []
obj = Struct.new(:foo, :visited).new(arr, false)
arr << obj
def obj.hash
self[:visited] = true
super
raise "recursive_outer should short circuit intermediate calls"
end
assert_nothing_raised {arr.hash}
assert(obj[:visited], "obj.hash was not called")
end
def test_thread_instance_variable
bug4389 = '[ruby-core:35192]'
assert_in_out_err([], <<-INPUT, %w(), [], bug4389)
class << Thread.current
@data = :data
end
INPUT
end
def test_no_valid_cfp
skip 'with win32ole, cannot run this testcase because win32ole redefines Thread#initialize' if defined?(WIN32OLE)
bug5083 = '[ruby-dev:44208]'
assert_equal([], Thread.new(&Module.method(:nesting)).value, bug5083)
assert_instance_of(Thread, Thread.new(:to_s, &Class.new.method(:undef_method)).join, bug5083)
end
def make_handle_interrupt_test_thread1 flag
r = []
ready_q = Queue.new
done_q = Queue.new
th = Thread.new{
begin
Thread.handle_interrupt(RuntimeError => flag){
begin
ready_q << true
done_q.pop
rescue
r << :c1
end
}
rescue
r << :c2
end
}
ready_q.pop
th.raise
begin
done_q << true
th.join
rescue
r << :c3
end
r
end
def test_handle_interrupt
[[:never, :c2],
[:immediate, :c1],
[:on_blocking, :c1]].each{|(flag, c)|
assert_equal([flag, c], [flag] + make_handle_interrupt_test_thread1(flag))
}
# TODO: complex cases are needed.
end
def test_handle_interrupt_invalid_argument
assert_raise(ArgumentError) {
Thread.handle_interrupt(RuntimeError => :immediate) # no block
}
assert_raise(ArgumentError) {
Thread.handle_interrupt(RuntimeError => :xyzzy) {}
}
assert_raise(TypeError) {
Thread.handle_interrupt([]) {} # array
}
end
def for_test_handle_interrupt_with_return
Thread.handle_interrupt(Object => :never){
Thread.current.raise RuntimeError.new("have to be rescured")
return
}
rescue
end
def test_handle_interrupt_with_return
assert_nothing_raised do
for_test_handle_interrupt_with_return
_dummy_for_check_ints=nil
end
end
def test_handle_interrupt_with_break
assert_nothing_raised do
begin
Thread.handle_interrupt(Object => :never){
Thread.current.raise RuntimeError.new("have to be rescured")
break
}
rescue
end
_dummy_for_check_ints=nil
end
end
def test_handle_interrupt_blocking
r=:ng
e=Class.new(Exception)
th_s = Thread.current
th = Thread.start{
assert_raise(RuntimeError) {
Thread.handle_interrupt(Object => :on_blocking){
begin
Thread.pass until r == :wait
Thread.current.raise RuntimeError, "will raise in sleep"
r = :ok
sleep
ensure
th_s.raise e, "raise from ensure", $@
end
}
}
}
assert_raise(e) {r = :wait; sleep 0.2}
th.join
assert_equal(:ok,r)
end
def test_handle_interrupt_and_io
assert_in_out_err([], <<-INPUT, %w(ok), [])
th_waiting = true
t = Thread.new {
Thread.current.report_on_exception = false
Thread.handle_interrupt(RuntimeError => :on_blocking) {
nil while th_waiting
# async interrupt should be raised _before_ writing puts arguments
puts "ng"
}
}
Thread.pass while t.stop?
t.raise RuntimeError
th_waiting = false
t.join rescue nil
puts "ok"
INPUT
end
def test_handle_interrupt_and_p
assert_in_out_err([], <<-INPUT, %w(:ok :ok), [])
th_waiting = false
t = Thread.new {
Thread.current.report_on_exception = false
Thread.handle_interrupt(RuntimeError => :on_blocking) {
th_waiting = true
nil while th_waiting
# p shouldn't provide interruptible point
p :ok
p :ok
}
}
Thread.pass until th_waiting
t.raise RuntimeError
th_waiting = false
t.join rescue nil
INPUT
end
def test_handle_interrupted?
q = Thread::Queue.new
Thread.handle_interrupt(RuntimeError => :never){
done = false
th = Thread.new{
q.push :e
begin
begin
Thread.pass until done
rescue => e
q.push :ng1
end
begin
Thread.handle_interrupt(Object => :immediate){} if Thread.pending_interrupt?
rescue RuntimeError => e
q.push :ok
end
rescue => e
q.push :ng2
ensure
q.push :ng3
end
}
q.pop
th.raise
done = true
th.join
assert_equal(:ok, q.pop)
}
end
def test_thread_timer_and_ensure
assert_normal_exit(<<_eom, 'r36492', timeout: 10)
flag = false
t = Thread.new do
begin
sleep
ensure
1 until flag
end
end
Thread.pass until t.status == "sleep"
t.kill
t.alive? == true
flag = true
t.join
_eom
end
def test_uninitialized
c = Class.new(Thread) {def initialize; end}
assert_raise(ThreadError) { c.new.start }
bug11959 = '[ruby-core:72732] [Bug #11959]'
c = Class.new(Thread) {def initialize; exit; end}
assert_raise(ThreadError, bug11959) { c.new }
c = Class.new(Thread) {def initialize; raise; end}
assert_raise(ThreadError, bug11959) { c.new }
c = Class.new(Thread) {
def initialize
pending = pending_interrupt?
super {pending}
end
}
assert_equal(false, c.new.value, bug11959)
end
def test_backtrace
Thread.new{
assert_equal(Array, Thread.main.backtrace.class)
}.join
t = Thread.new{}
t.join
assert_equal(nil, t.backtrace)
end
def test_thread_timer_and_interrupt
bug5757 = '[ruby-dev:44985]'
pid = nil
cmd = 'Signal.trap(:INT, "DEFAULT"); pipe=IO.pipe; Thread.start {Thread.pass until Thread.main.stop?; puts; STDOUT.flush}; pipe[0].read'
opt = {}
opt[:new_pgroup] = true if /mswin|mingw/ =~ RUBY_PLATFORM
s, t, _err = EnvUtil.invoke_ruby(['-e', cmd], "", true, true, opt) do |in_p, out_p, err_p, cpid|
assert IO.select([out_p], nil, nil, 10), 'subprocess not ready'
out_p.gets
pid = cpid
t0 = Time.now.to_f
Process.kill(:SIGINT, pid)
Timeout.timeout(10) { Process.wait(pid) }
t1 = Time.now.to_f
[$?, t1 - t0, err_p.read]
end
assert_equal(pid, s.pid, bug5757)
assert_equal([false, true, false, Signal.list["INT"]],
[s.exited?, s.signaled?, s.stopped?, s.termsig],
"[s.exited?, s.signaled?, s.stopped?, s.termsig]")
assert_include(0..2, t, bug5757)
end
def test_thread_join_in_trap
assert_separately [], <<-'EOS'
Signal.trap(:INT, "DEFAULT")
t0 = Thread.current
assert_nothing_raised{
t = Thread.new {Thread.pass until t0.stop?; Process.kill(:INT, $$)}
Signal.trap :INT do
t.join
end
t.join
}
EOS
end
def test_thread_value_in_trap
assert_separately [], <<-'EOS'
Signal.trap(:INT, "DEFAULT")
t0 = Thread.current
t = Thread.new {Thread.pass until t0.stop?; Process.kill(:INT, $$); :normal_end}
Signal.trap :INT do
t.value
end
assert_equal(:normal_end, t.value)
EOS
end
def test_thread_join_current
assert_raise(ThreadError) do
Thread.current.join
end
end
def test_thread_join_main_thread
Thread.new(Thread.current) {|t|
assert_raise(ThreadError) do
t.join
end
}.join
end
def test_main_thread_status_at_exit
assert_in_out_err([], <<-'INPUT', ["false false aborting"], [])
q = Thread::Queue.new
Thread.new(Thread.current) {|mth|
begin
q.push nil
mth.run
Thread.pass until mth.stop?
p :mth_stopped # don't run if killed by rb_thread_terminate_all
ensure
puts "#{mth.alive?} #{mth.status} #{Thread.current.status}"
end
}
q.pop
INPUT
end
def test_thread_status_in_trap
# when running trap handler, Thread#status must show "run"
# Even though interrupted from sleeping function
assert_in_out_err([], <<-INPUT, %w(sleep run), [])
Signal.trap(:INT) {
puts Thread.current.status
exit
}
t = Thread.current
Thread.new(Thread.current) {|mth|
Thread.pass until t.stop?
puts mth.status
Process.kill(:INT, $$)
}
sleep 0.1
INPUT
end
# Bug #7450
def test_thread_status_raise_after_kill
ary = []
t = Thread.new {
assert_raise(RuntimeError) do
begin
ary << Thread.current.status
sleep #1
ensure
begin
ary << Thread.current.status
sleep #2
ensure
ary << Thread.current.status
end
end
end
}
Thread.pass until ary.size >= 1
Thread.pass until t.stop?
t.kill # wake up sleep #1
Thread.pass until ary.size >= 2
Thread.pass until t.stop?
t.raise "wakeup" # wake up sleep #2
Thread.pass while t.alive?
assert_equal(ary, ["run", "aborting", "aborting"])
t.join
end
def test_mutex_owned
mutex = Thread::Mutex.new
assert_equal(mutex.owned?, false)
mutex.synchronize {
# Now, I have the mutex
assert_equal(mutex.owned?, true)
}
assert_equal(mutex.owned?, false)
end
def test_mutex_owned2
begin
mutex = Thread::Mutex.new
th = Thread.new {
# lock forever
mutex.lock
sleep
}
# acquired by another thread.
Thread.pass until mutex.locked?
assert_equal(mutex.owned?, false)
ensure
th&.kill
end
end
def test_mutex_unlock_on_trap
assert_in_out_err([], <<-INPUT, %w(locked unlocked false), [])
m = Thread::Mutex.new
trapped = false
Signal.trap("INT") { |signo|
m.unlock
trapped = true
puts "unlocked"
}
m.lock
puts "locked"
Process.kill("INT", $$)
Thread.pass until trapped
puts m.locked?
INPUT
end
def invoke_rec script, vm_stack_size, machine_stack_size, use_length = true
env = {}
env['RUBY_THREAD_VM_STACK_SIZE'] = vm_stack_size.to_s if vm_stack_size
env['RUBY_THREAD_MACHINE_STACK_SIZE'] = machine_stack_size.to_s if machine_stack_size
out, = EnvUtil.invoke_ruby([env, '-e', script], '', true, true)
use_length ? out.length : out
end
def test_stack_size
h_default = eval(invoke_rec('p RubyVM::DEFAULT_PARAMS', nil, nil, false))
h_0 = eval(invoke_rec('p RubyVM::DEFAULT_PARAMS', 0, 0, false))
h_large = eval(invoke_rec('p RubyVM::DEFAULT_PARAMS', 1024 * 1024 * 10, 1024 * 1024 * 10, false))
assert_operator(h_default[:thread_vm_stack_size], :>, h_0[:thread_vm_stack_size],
"0 thread_vm_stack_size")
assert_operator(h_default[:thread_vm_stack_size], :<, h_large[:thread_vm_stack_size],
"large thread_vm_stack_size")
assert_operator(h_default[:thread_machine_stack_size], :>=, h_0[:thread_machine_stack_size],
"0 thread_machine_stack_size")
assert_operator(h_default[:thread_machine_stack_size], :<=, h_large[:thread_machine_stack_size],
"large thread_machine_stack_size")
end
def test_vm_machine_stack_size
script = 'def rec; print "."; STDOUT.flush; rec; end; rec'
size_default = invoke_rec script, nil, nil
assert_operator(size_default, :>, 0, "default size")
size_0 = invoke_rec script, 0, nil
assert_operator(size_default, :>, size_0, "0 size")
size_large = invoke_rec script, 1024 * 1024 * 10, nil
assert_operator(size_default, :<, size_large, "large size")
end
def test_machine_stack_size
# check machine stack size
# Note that machine stack size may not change size (depend on OSs)
script = 'def rec; print "."; STDOUT.flush; 1.times{1.times{1.times{rec}}}; end; Thread.new{rec}.join'
vm_stack_size = 1024 * 1024
size_default = invoke_rec script, vm_stack_size, nil
size_0 = invoke_rec script, vm_stack_size, 0
assert_operator(size_default, :>=, size_0, "0 size")
size_large = invoke_rec script, vm_stack_size, 1024 * 1024 * 10
assert_operator(size_default, :<=, size_large, "large size")
end unless /mswin|mingw/ =~ RUBY_PLATFORM
def test_blocking_mutex_unlocked_on_fork
bug8433 = '[ruby-core:55102] [Bug #8433]'
mutex = Thread::Mutex.new
flag = false
mutex.lock
th = Thread.new do
mutex.synchronize do
flag = true
sleep
end
end
Thread.pass until th.stop?
mutex.unlock
pid = Process.fork do
exit(mutex.locked?)
end
th.kill
pid, status = Process.waitpid2(pid)
assert_equal(false, status.success?, bug8433)
end if Process.respond_to?(:fork)
def test_fork_in_thread
bug9751 = '[ruby-core:62070] [Bug #9751]'
f = nil
th = Thread.start do
unless f = IO.popen("-")
STDERR.reopen(STDOUT)
exit
end
Process.wait2(f.pid)
end
unless th.join(EnvUtil.apply_timeout_scale(30))
Process.kill(:QUIT, f.pid)
Process.kill(:KILL, f.pid) unless th.join(EnvUtil.apply_timeout_scale(1))
end
_, status = th.value
output = f.read
f.close
assert_not_predicate(status, :signaled?, FailDesc[status, bug9751, output])
assert_predicate(status, :success?, bug9751)
end if Process.respond_to?(:fork)
def test_fork_while_locked
m = Mutex.new
thrs = []
3.times do |i|
thrs << Thread.new { m.synchronize { Process.waitpid2(fork{})[1] } }
end
thrs.each do |t|
assert_predicate t.value, :success?, '[ruby-core:85940] [Bug #14578]'
end
end if Process.respond_to?(:fork)
def test_fork_while_parent_locked
skip 'needs fork' unless Process.respond_to?(:fork)
m = Thread::Mutex.new
nr = 1
thrs = []
m.synchronize do
thrs = nr.times.map { Thread.new { m.synchronize {} } }
thrs.each { Thread.pass }
pid = fork do
m.locked? or exit!(2)
thrs = nr.times.map { Thread.new { m.synchronize {} } }
m.unlock
thrs.each { |t| t.join(1) == t or exit!(1) }
exit!(0)
end
_, st = Process.waitpid2(pid)
assert_predicate st, :success?, '[ruby-core:90312] [Bug #15383]'
end
thrs.each { |t| assert_same t, t.join(1) }
end
def test_fork_while_mutex_locked_by_forker
skip 'needs fork' unless Process.respond_to?(:fork)
m = Mutex.new
m.synchronize do
pid = fork do
exit!(2) unless m.locked?
m.unlock rescue exit!(3)
m.synchronize {} rescue exit!(4)
exit!(0)
end
_, st = Timeout.timeout(30) { Process.waitpid2(pid) }
assert_predicate st, :success?, '[ruby-core:90595] [Bug #15430]'
end
end
def test_subclass_no_initialize
t = Module.new do
break eval("class C\u{30b9 30ec 30c3 30c9} < Thread; self; end")
end
t.class_eval do
def initialize
end
end
assert_raise_with_message(ThreadError, /C\u{30b9 30ec 30c3 30c9}/) do
t.new {}
end
end
def test_thread_name
t = Thread.start {sleep}
sleep 0.001 until t.stop?
assert_nil t.name
s = t.inspect
t.name = 'foo'
assert_equal 'foo', t.name
t.name = nil
assert_nil t.name
assert_equal s, t.inspect
ensure
t.kill
t.join
end
def test_thread_invalid_name
bug11756 = '[ruby-core:71774] [Bug #11756]'
t = Thread.start {}
assert_raise(ArgumentError, bug11756) {t.name = "foo\0bar"}
assert_raise(ArgumentError, bug11756) {t.name = "foo".encode(Encoding::UTF_32BE)}
ensure
t.kill
t.join
end
def test_thread_invalid_object
bug11756 = '[ruby-core:71774] [Bug #11756]'
t = Thread.start {}
assert_raise(TypeError, bug11756) {t.name = []}
ensure
t.kill
t.join
end
def test_thread_setname_in_initialize
bug12290 = '[ruby-core:74963] [Bug #12290]'
c = Class.new(Thread) {def initialize() self.name = "foo"; super; end}
assert_equal("foo", c.new {Thread.current.name}.value, bug12290)
end
def test_thread_interrupt_for_killed_thread
opts = { timeout: 5, timeout_error: nil }
# prevent SIGABRT from slow shutdown with MJIT
opts[:reprieve] = 3 if RubyVM::MJIT.enabled?
assert_normal_exit(<<-_end, '[Bug #8996]', opts)
Thread.report_on_exception = false
trap(:TERM){exit}
while true
t = Thread.new{sleep 0}
t.raise Interrupt
Thread.pass # allow t to finish
end
_end
end
def test_signal_at_join
if /mswin|mingw/ =~ RUBY_PLATFORM
skip "can't trap a signal from another process on Windows"
# opt = {new_pgroup: true}
end
assert_separately([], "#{<<~"{#"}\n#{<<~'};'}", timeout: 120)
{#
n = 1000
sig = :INT
trap(sig) {}
IO.popen([EnvUtil.rubybin, "-e", "#{<<~"{#1"}\n#{<<~'};#1'}"], "r+") do |f|
tpid = #{$$}
sig = :#{sig}
{#1
STDOUT.sync = true
while gets
puts
Process.kill(sig, tpid)
end
};#1
assert_nothing_raised do
n.times do
w = Thread.start do
sleep 30
end
begin
f.puts
f.gets
ensure
w.kill
w.join
end
end
end
n.times do
w = Thread.start { sleep 30 }
begin
f.puts
f.gets
ensure
w.kill
t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC)
w.join(30)
t1 = Process.clock_gettime(Process::CLOCK_MONOTONIC)
diff = t1 - t0
assert_operator diff, :<=, 2
end
end
end
};
end
end