merge revision(s) 44517,44518,44519,44523: [Backport ruby#9354]

	* lib/timeout.rb (Timeout#timeout): when a custom exception is given,
	  no instance is needed to be caught, so defer creating new instance
	  until it is raised.  [ruby-core:59511] [Bug ruby#9354]

	* lib/timeout.rb (Timeout#timeout): should not rescue ordinarily
	  raised ExitException, which should not be thrown.

	* lib/timeout.rb (Timeout::ExitException.catch): set @thread only if
	  it ought to be caught.

	* lib/timeout.rb (Timeout::ExitException.catch): pass arguments
	  for new instance.

	* lib/timeout.rb (Timeout::ExitException#exception): fallback to
	  Timeout::Error if couldn't throw.  [ruby-dev:47872] [Bug ruby#9380]

	* lib/timeout.rb (Timeout#timeout): initialize ExitException with
	  message for the fallback case.


git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/branches/ruby_2_1@44841 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: nurse

ChangeLog

@@ -1,3 +1,26 @@
+Wed Feb  5 21:12:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/timeout.rb (Timeout::ExitException.catch): pass arguments
+	  for new instance.
+
+	* lib/timeout.rb (Timeout::ExitException#exception): fallback to
+	  Timeout::Error if couldn't throw.  [ruby-dev:47872] [Bug #9380]
+
+	* lib/timeout.rb (Timeout#timeout): initialize ExitException with
+	  message for the fallback case.
+
+Wed Feb  5 21:12:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/timeout.rb (Timeout#timeout): should not rescue ordinarily
+	  raised ExitException, which should not be thrown.
+
+	* lib/timeout.rb (Timeout::ExitException.catch): set @thread only if
+	  it ought to be caught.
+
+	* lib/timeout.rb (Timeout#timeout): when a custom exception is given,
+	  no instance is needed to be caught, so defer creating new instance
+	  until it is raised.  [ruby-core:59511] [Bug #9354]
+
 Wed Feb  5 17:55:28 2014  Aman Gupta <ruby@tmm1.net>
 
 	* array.c (ary_add_hash): Fix consistency issue between Array#uniq and

lib/timeout.rb

@@ -26,16 +26,25 @@ module Timeout
   class Error < RuntimeError
   end
   class ExitException < ::Exception # :nodoc:
-    attr_reader :klass, :thread
+    attr_reader :thread
 
-    def initialize(*)
-      super
-      @thread = Thread.current
-      freeze
+    def self.catch(*args)
+      exc = new(*args)
+      exc.instance_variable_set(:@thread, Thread.current)
+      exc.freeze
+      ::Kernel.catch(exc) {yield exc}
     end
 
     def exception(*)
-      throw(self, caller) if self.thread == Thread.current
+      if self.thread == Thread.current
+        bt = caller
+        begin
+          throw(self, bt)
+        rescue ArgumentError => e
+          raise unless e.message.start_with?("uncaught throw")
+          raise Error, message, backtrace
+        end
+      end
       self
     end
   end
@@ -67,7 +76,7 @@ def timeout(sec, klass = nil)   #:yield: +sec+
     return yield(sec) if sec == nil or sec.zero?
     message = "execution expired"
     e = Error
-    bt = catch((klass||ExitException).new) do |exception|
+    bl = proc do |exception|
       begin
         x = Thread.current
         y = Thread.start {
@@ -80,15 +89,22 @@ def timeout(sec, klass = nil)   #:yield: +sec+
           end
         }
         return yield(sec)
-      rescue (klass||ExitException) => e
-        e.backtrace
       ensure
         if y
           y.kill
           y.join # make sure y is dead.
         end
       end
     end
+    if klass
+      begin
+        bl.call(klass)
+      rescue klass => e
+        bt = e.backtrace
+      end
+    else
+      bt = ExitException.catch(message, &bl)
+    end
     rej = /\A#{Regexp.quote(__FILE__)}:#{__LINE__-4}\z/o
     bt.reject! {|m| rej =~ m}
     level = -caller(CALLER_OFFSET).size

test/test_timeout.rb

@@ -57,4 +57,33 @@ def test_rescue_exit
     end
     assert_raise_with_message(exc, /execution expired/) {raise e if e}
   end
+
+  def test_custom_exception
+    bug9354 = '[ruby-core:59511] [Bug #9354]'
+    err = Class.new(StandardError) do
+      def initialize(msg) super end
+    end
+    assert_nothing_raised(ArgumentError, bug9354) do
+      assert_equal(:ok, timeout(100, err) {:ok})
+    end
+  end
+
+  def test_exit_exception
+    assert_raise_with_message(Timeout::ExitException, "boon") do
+      Timeout.timeout(10, Timeout::ExitException) do
+        raise Timeout::ExitException, "boon"
+      end
+    end
+  end
+
+  def test_enumerator_next
+    bug9380 = '[ruby-dev:47872] [Bug #9380]: timeout in Enumerator#next'
+    e = (o=Object.new).to_enum
+    def o.each
+      sleep
+    end
+    assert_raise_with_message(Timeout::Error, 'execution expired', bug9380) do
+      Timeout.timeout(0.01) {e.next}
+    end
+  end
 end

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.1"
 #define RUBY_RELEASE_DATE "2014-02-05"
-#define RUBY_PATCHLEVEL 18
+#define RUBY_PATCHLEVEL 19
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 2