* win32/win32.c (waitpid): return immediately if interrupted.

reported by <takkanm AT gmail.com> [ruby-dev:49176] [Bug #11340]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51202 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Jul  9 15:07:12 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (waitpid): return immediately if interrupted.
+	  reported by <takkanm AT gmail.com> [ruby-dev:49176] [Bug #11340]
+
 Thu Jul  9 13:03:46 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_insnhelper.c (vm_search_super_method): use CI_SET_FASTPATH().

win32/win32.c

@@ -4296,9 +4296,10 @@ waitpid(rb_pid_t pid, int *stat_loc, int options)
 
 	while (!(pid = poll_child_status(child, stat_loc))) {
 	    /* wait... */
+	    errno = 0;
 	    if (rb_w32_wait_events_blocking(&child->hProcess, 1, timeout) != WAIT_OBJECT_0) {
 		/* still active */
-		if (options & WNOHANG) {
+		if ((options & WNOHANG) || errno == EINTR) {
 		    pid = 0;
 		    break;
 		}