merges r21265 from trunk into ruby_1_9_1.

* signal.c (rb_signal_buff_size): defined for check whether signal
  is in the buffer or not.

* thread_pthread.c (thread_timer): don't exit the loop when signal
  is in the buffer. [ruby-dev:37637]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21302 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/signal.c b/signal.c
index 91aa7c418e..8d75c3bc5c 100644
--- a/signal.c
+++ b/signal.c
@@ -514,6 +514,12 @@ sighandler(int sig)
 #endif
 }
 
+int
+rb_signal_buff_size()
+{
+    return signal_buff.size;
+}
+
 #if USE_TRAP_MASK
 # ifdef HAVE_SIGPROCMASK
 static sigset_t trap_last_mask;