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-rw-r--r--test/ruby/test_thread.rb485
1 files changed, 370 insertions, 115 deletions
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 52d46dc7a3..41cee124be 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -1,7 +1,8 @@
# -*- coding: us-ascii -*-
# frozen_string_literal: false
require 'test/unit'
-require 'thread'
+require "rbconfig/sizeof"
+require "timeout"
class TestThread < Test::Unit::TestCase
class Thread < ::Thread
@@ -28,12 +29,29 @@ class TestThread < Test::Unit::TestCase
end
def test_inspect
+ line = __LINE__+1
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)
+ s = th.inspect
+ assert_include(s, "::C\u{30b9 30ec 30c3 30c9}:")
+ assert_include(s, " #{__FILE__}:#{line} ")
+ assert_equal(s, th.to_s)
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
@@ -90,7 +108,7 @@ class TestThread < Test::Unit::TestCase
def test_thread_variable_frozen
t = Thread.new { }.join
t.freeze
- assert_raise(RuntimeError) do
+ assert_raise(FrozenError) do
t.thread_variable_set(:foo, "bar")
end
end
@@ -154,6 +172,8 @@ class TestThread < Test::Unit::TestCase
t1.kill
t2.kill
assert_operator(c1, :>, c2, "[ruby-dev:33124]") # not guaranteed
+ t1.join
+ t2.join
end
def test_new
@@ -172,8 +192,8 @@ class TestThread < Test::Unit::TestCase
end
ensure
- t1.kill if t1
- t2.kill if t2
+ t1&.kill&.join
+ t2&.kill&.join
end
def test_new_symbol_proc
@@ -189,7 +209,7 @@ class TestThread < Test::Unit::TestCase
assert_nil(t.join(0.05))
ensure
- t.kill if t
+ t&.kill&.join
end
def test_join2
@@ -210,9 +230,47 @@ class TestThread < Test::Unit::TestCase
assert_equal(t1, t3.value)
ensure
- t1.kill if t1
- t2.kill if t2
- t3.kill if t3
+ t1&.kill&.join
+ t2&.kill&.join
+ t3&.kill&.join
+ end
+
+ def test_join_argument_conversion
+ t = Thread.new {}
+ assert_raise(TypeError) {t.join(:foo)}
+
+ limit = Struct.new(:to_f, :count).new(0.05)
+ assert_same(t, t.join(limit))
+ 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
@@ -259,14 +317,14 @@ class TestThread < Test::Unit::TestCase
s += 1
end
Thread.pass until t.stop?
+ sleep 1 if defined?(RubyVM::MJIT) && 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 if t
+ t&.kill&.join
end
def test_stop
@@ -305,7 +363,10 @@ class TestThread < Test::Unit::TestCase
assert_in_out_err([], <<-INPUT, %w(false 1), [])
p Thread.abort_on_exception
begin
- t = Thread.new { raise }
+ t = Thread.new {
+ Thread.current.report_on_exception = false
+ raise
+ }
Thread.pass until t.stop?
p 1
rescue
@@ -317,7 +378,10 @@ class TestThread < Test::Unit::TestCase
Thread.abort_on_exception = true
p Thread.abort_on_exception
begin
- Thread.new { raise }
+ Thread.new {
+ Thread.current.report_on_exception = false
+ raise
+ }
sleep 0.5
p 1
rescue
@@ -340,7 +404,11 @@ class TestThread < Test::Unit::TestCase
p Thread.abort_on_exception
begin
ok = false
- t = Thread.new { Thread.pass until ok; raise }
+ 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
@@ -358,35 +426,40 @@ class TestThread < Test::Unit::TestCase
q1 = Thread::Queue.new
q2 = Thread::Queue.new
- assert_equal(false, Thread.report_on_exception,
- "global flags is false by default")
- assert_equal(false, Thread.current.report_on_exception)
+ 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.current.report_on_exception = true
- assert_equal(false,
+ 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")
+ "should not inherit from the parent thread but from the global flag")
- assert_warn("", "exception should be ignored silently") {
+ 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") {
+ 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_equal(false, Thread.report_on_exception)
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)
@@ -395,19 +468,21 @@ class TestThread < Test::Unit::TestCase
q2.push(Thread.report_on_exception = true)
assert_equal(false, q1.pop)
Thread.pass while th.alive?
+ assert_raise(RuntimeError) { th.join }
}
- assert_equal(true, Thread.report_on_exception)
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 defaults to the global flag at the start") {
+ 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
@@ -418,12 +493,29 @@ class TestThread < Test::Unit::TestCase
q2.push(true)
Thread.pass while th.alive?
}
+ assert_raise(RuntimeError) { th.join }
}
end;
end
+ def test_ignore_deadlock
+ if /mswin|mingw/ =~ RUBY_PLATFORM
+ skip "can't trap a signal from another process on Windows"
+ end
+ assert_in_out_err([], <<-INPUT, %w(false :sig), [], :signal=>:INT, timeout: 1, timeout_error: nil)
+ p Thread.ignore_deadlock
+ q = Thread::Queue.new
+ trap(:INT){q.push :sig}
+ Thread.ignore_deadlock = true
+ p q.pop
+ INPUT
+ end
+
def test_status_and_stop_p
- a = ::Thread.new { raise("die now") }
+ 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
@@ -442,11 +534,10 @@ class TestThread < Test::Unit::TestCase
es1 = e.status
es2 = e.stop?
assert_equal(["run", false], [es1, es2])
-
+ assert_raise(RuntimeError) { a.join }
ensure
- a.kill if a
- b.kill if b
- c.kill if c
+ b&.kill&.join
+ c&.join
end
def test_switch_while_busy_loop
@@ -464,24 +555,7 @@ class TestThread < Test::Unit::TestCase
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(0, Thread.current.safe_level)
- assert_equal(1, t.safe_level)
-
- ensure
- t.kill if t
+ waiter&.kill&.join
end
def test_thread_local
@@ -501,17 +575,49 @@ class TestThread < Test::Unit::TestCase
assert_equal([:foo, :bar, :baz].sort, t.keys.sort)
ensure
- t.kill if t
+ 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
- assert_raise(RuntimeError) do
- Thread.new do
- Thread.current[:foo] = :bar
- Thread.current.freeze
+ Thread.new do
+ Thread.current[:foo] = :bar
+ Thread.current.freeze
+ assert_raise(FrozenError) do
Thread.current[:foo] = :baz
- end.join
- end
+ end
+ end.join
end
def test_thread_local_dynamic_symbol
@@ -531,7 +637,8 @@ class TestThread < Test::Unit::TestCase
end
Thread.pass until t.stop?
assert_predicate(t, :alive?)
- t.kill
+ ensure
+ t&.kill&.join
end
def test_mutex_deadlock
@@ -560,11 +667,11 @@ class TestThread < Test::Unit::TestCase
def test_mutex_illegal_unlock
m = Thread::Mutex.new
m.lock
- assert_raise(ThreadError) do
- Thread.new do
+ Thread.new do
+ assert_raise(ThreadError) do
m.unlock
- end.join
- end
+ end
+ end.join
end
def test_mutex_fifo_like_lock
@@ -632,14 +739,14 @@ class TestThread < Test::Unit::TestCase
def make_handle_interrupt_test_thread1 flag
r = []
- ready_p = false
- done = false
+ ready_q = Thread::Queue.new
+ done_q = Thread::Queue.new
th = Thread.new{
begin
Thread.handle_interrupt(RuntimeError => flag){
begin
- ready_p = true
- sleep 0.01 until done
+ ready_q << true
+ done_q.pop
rescue
r << :c1
end
@@ -648,10 +755,10 @@ class TestThread < Test::Unit::TestCase
r << :c2
end
}
- Thread.pass until ready_p
+ ready_q.pop
th.raise
begin
- done = true
+ done_q << true
th.join
rescue
r << :c3
@@ -709,15 +816,16 @@ class TestThread < Test::Unit::TestCase
end
def test_handle_interrupt_blocking
- r=:ng
- e=Class.new(Exception)
+ r = nil
+ q = Thread::Queue.new
+ e = Class.new(Exception)
th_s = Thread.current
- begin
- th = Thread.start{
+ th = Thread.start {
+ assert_raise(RuntimeError) {
Thread.handle_interrupt(Object => :on_blocking){
begin
- Thread.pass until r == :wait
- Thread.current.raise RuntimeError
+ q.pop
+ Thread.current.raise RuntimeError, "will raise in sleep"
r = :ok
sleep
ensure
@@ -725,27 +833,27 @@ class TestThread < Test::Unit::TestCase
end
}
}
- assert_raise(e) {r = :wait; sleep 0.2}
- assert_raise(RuntimeError) {th.join(0.2)}
- ensure
- th.kill
- end
- assert_equal(:ok,r)
+ }
+ assert_raise(e) {q << true; th.join}
+ assert_equal(:ok, r)
end
def test_handle_interrupt_and_io
assert_in_out_err([], <<-INPUT, %w(ok), [])
th_waiting = true
+ q = Thread::Queue.new
t = Thread.new {
+ Thread.current.report_on_exception = false
Thread.handle_interrupt(RuntimeError => :on_blocking) {
+ q << true
nil while th_waiting
# async interrupt should be raised _before_ writing puts arguments
puts "ng"
}
}
- Thread.pass while t.stop?
+ q.pop
t.raise RuntimeError
th_waiting = false
t.join rescue nil
@@ -758,6 +866,7 @@ class TestThread < Test::Unit::TestCase
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
@@ -783,15 +892,15 @@ class TestThread < Test::Unit::TestCase
begin
begin
Thread.pass until done
- rescue => e
+ rescue
q.push :ng1
end
begin
Thread.handle_interrupt(Object => :immediate){} if Thread.pending_interrupt?
- rescue RuntimeError => e
+ rescue RuntimeError
q.push :ok
end
- rescue => e
+ rescue
q.push :ng2
ensure
q.push :ng3
@@ -859,15 +968,21 @@ _eom
def test_thread_timer_and_interrupt
bug5757 = '[ruby-dev:44985]'
pid = nil
- cmd = 'Signal.trap(:INT, "DEFAULT"); r,=IO.pipe; Thread.start {Thread.pass until Thread.main.stop?; puts; STDOUT.flush}; r.read'
+ 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|
+ 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)
- Process.wait(pid)
+ begin
+ Timeout.timeout(10) { Process.wait(pid) }
+ rescue Timeout::Error
+ EnvUtil.terminate(pid)
+ raise
+ end
t1 = Time.now.to_f
[$?, t1 - t0, err_p.read]
end
@@ -914,16 +1029,15 @@ _eom
end
def test_thread_join_main_thread
- assert_raise(ThreadError) do
- Thread.new(Thread.current) {|t|
+ Thread.new(Thread.current) {|t|
+ assert_raise(ThreadError) do
t.join
- }.join
- end
+ end
+ }.join
end
def test_main_thread_status_at_exit
assert_in_out_err([], <<-'INPUT', ["false false aborting"], [])
-require 'thread'
q = Thread::Queue.new
Thread.new(Thread.current) {|mth|
begin
@@ -963,31 +1077,30 @@ q.pop
ary = []
t = Thread.new {
- begin
- ary << Thread.current.status
- sleep #1
- ensure
+ assert_raise(RuntimeError) do
begin
ary << Thread.current.status
- sleep #2
+ sleep #1
ensure
- ary << Thread.current.status
+ begin
+ ary << Thread.current.status
+ sleep #2
+ ensure
+ ary << Thread.current.status
+ end
end
end
}
- begin
- 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"])
- ensure
- t.join rescue nil
- 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
@@ -1014,7 +1127,7 @@ q.pop
Thread.pass until mutex.locked?
assert_equal(mutex.owned?, false)
ensure
- th.kill if th
+ th&.kill&.join
end
end
@@ -1041,7 +1154,9 @@ q.pop
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)
+ out, err, status = EnvUtil.invoke_ruby([env, '-e', script], '', true, true)
+ assert_not_predicate(status, :signaled?, err)
+
use_length ? out.length : out
end
@@ -1058,6 +1173,7 @@ q.pop
"0 thread_machine_stack_size")
assert_operator(h_default[:thread_machine_stack_size], :<=, h_large[:thread_machine_stack_size],
"large thread_machine_stack_size")
+ assert_equal("ok", invoke_rec('print :ok', 1024 * 1024 * 100, nil, false))
end
def test_vm_machine_stack_size
@@ -1086,12 +1202,10 @@ q.pop
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
@@ -1119,9 +1233,9 @@ q.pop
end
Process.wait2(f.pid)
end
- unless th.join(3)
+ unless th.join(EnvUtil.apply_timeout_scale(30))
Process.kill(:QUIT, f.pid)
- Process.kill(:KILL, f.pid) unless th.join(1)
+ Process.kill(:KILL, f.pid) unless th.join(EnvUtil.apply_timeout_scale(1))
end
_, status = th.value
output = f.read
@@ -1130,6 +1244,67 @@ q.pop
assert_predicate(status, :success?, bug9751)
end if Process.respond_to?(:fork)
+ def test_fork_value
+ bug18902 = "[Bug #18902]"
+ th = Thread.start { sleep 2 }
+ begin
+ pid = fork do
+ th.value
+ end
+ _, status = Process.wait2(pid)
+ assert_predicate(status, :success?, bug18902)
+ ensure
+ th.kill
+ end
+ end if Process.respond_to?(:fork)
+
+ def test_fork_while_locked
+ m = Thread::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 = Thread::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")
@@ -1183,13 +1358,93 @@ q.pop
assert_equal("foo", c.new {Thread.current.name}.value, bug12290)
end
+ def test_thread_native_thread_id
+ skip "don't support native_thread_id" unless Thread.method_defined?(:native_thread_id)
+ assert_instance_of Integer, Thread.main.native_thread_id
+
+ th1 = Thread.start{sleep}
+
+ # newly created thread which doesn't run yet returns nil or integer
+ assert_include [NilClass, Integer], th1.native_thread_id.class
+
+ Thread.pass until th1.stop?
+
+ # After a thread starts (and execute `sleep`), it returns native_thread_id
+ assert_instance_of Integer, th1.native_thread_id
+
+ th1.wakeup
+ Thread.pass while th1.alive?
+
+ # dead thread returns nil
+ assert_nil th1.native_thread_id
+ end
+
def test_thread_interrupt_for_killed_thread
- assert_normal_exit(<<-_end, '[Bug #8996]', timeout: 5, timeout_error: nil)
+ opts = { timeout: 5, timeout_error: nil }
+
+ # prevent SIGABRT from slow shutdown with MJIT
+ opts[:reprieve] = 3 if defined?(RubyVM::MJIT) && 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