process.c: kill threads in daemon process

* process.c (fork_daemon): kill the other threads all and abandon the
  kept mutexes.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41886 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,13 @@
+Wed Jul 10 14:18:59 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* process.c (fork_daemon): kill the other threads all and abandon the
+	  kept mutexes.
+
+Wed Jul 10 14:14:44 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* process.c (fork_daemon): kill the other threads all and abandon the
+	  kept mutexes.
+
 Wed Jul 10 11:35:36 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/net/http/test_http.rb (TestNetHTTP_v1_2#test_get,

process.c

@@ -5742,7 +5742,7 @@ rb_daemon(int nochdir, int noclose)
 #define fork_daemon() \
     switch (rb_fork_ruby(NULL)) { \
       case -1: return -1; \
-      case 0:  break; \
+      case 0:  rb_thread_atfork(); break; \
       default: _exit(EXIT_SUCCESS); \
     }
 

test/ruby/test_process.rb

@@ -1472,6 +1472,15 @@ class TestProcess < Test::Unit::TestCase
       assert_equal("ok?\n", data)
     end
 
+    def test_daemon_pid
+      cpid, dpid = IO.popen("-", "r+") do |f|
+        break f.pid, Integer(f.read) if f
+        Process.daemon(false, true)
+        puts $$
+      end
+      assert_not_equal(cpid, dpid)
+    end
+
     if File.directory?("/proc/self/task") && /netbsd[a-z]*[1-6]/ !~ RUBY_PLATFORM
       def test_daemon_no_threads
         pid, data = IO.popen("-", "r+") do |f|
@@ -1483,6 +1492,18 @@ class TestProcess < Test::Unit::TestCase
         assert_equal(2, data.size, bug4920)
         assert_not_include(data.map(&:to_i), pid)
       end
+    else
+      def test_daemon_no_threads
+        data = Timeout.timeout(3) do
+          IO.popen("-") do |f|
+            break f.readlines.map(&:chomp) if f
+            th = Thread.start {sleep 3}
+            Process.daemon(true, true)
+            puts Thread.list.size, th.status.inspect
+          end
+        end
+        assert_equal(["1", "false"], data)
+      end
     end
   end