add a blocking mailbox post function

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1471 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 2 insertions, 0 deletions

diff --git a/include/rtdef.h b/include/rtdef.h
index 898bf91399..f5d1449d45 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -489,6 +489,8 @@ struct rt_mailbox
 
 	rt_uint16_t entry;									/**< index of messages in msg_pool. 				*/
 	rt_uint16_t in_offset, out_offset;					/**< in/output offset of the message buffer.		*/
+
+	rt_list_t suspend_sender_thread;					/**< sender thread suspended on this mb		*/
 };
 typedef struct rt_mailbox* rt_mailbox_t;
 #endif