diff options
| -rw-r--r-- | ChangeLog-98b | 10 | ||||
| -rw-r--r-- | ace/Message_Queue_T.i | 2 |
2 files changed, 11 insertions, 1 deletions
diff --git a/ChangeLog-98b b/ChangeLog-98b index d239f7932f8..647e3cda01e 100644 --- a/ChangeLog-98b +++ b/ChangeLog-98b @@ -1,3 +1,13 @@ +Wed Aug 5 11:07:12 1998 Douglas C. Schmidt <schmidt@tango.cs.wustl.edu> + + * ace/Message_Queue_T.i: Changed the computation of is_empty_() so + that it doesn't consider the queue to be empty unless the + cur_bytes_ <= the low_water_mark_ (which defaults to 0 so that + no existing code is affected). This change makes it possible + for producer/consumer threading applications to avoid the "silly + window syndrome." Thanks to Umar Syyid <usyyid@hns.com> for + suggesting this. + Wed Aug 05 00:10:27 1998 Irfan Pyarali <irfan@cs.wustl.edu> * ace/OS.i (strnstr (both Unicode and Multibyte versions)): diff --git a/ace/Message_Queue_T.i b/ace/Message_Queue_T.i index e2f7878c0a2..b26290cca81 100644 --- a/ace/Message_Queue_T.i +++ b/ace/Message_Queue_T.i @@ -23,7 +23,7 @@ template <ACE_SYNCH_DECL> ACE_INLINE int ACE_Message_Queue<ACE_SYNCH_USE>::is_empty_i (void) { ACE_TRACE ("ACE_Message_Queue<ACE_SYNCH_USE>::is_empty_i"); - return this->cur_bytes_ <= 0 && this->cur_count_ <= 0; + return this->cur_bytes_ <= this->low_water_mark_ && this->cur_count_ <= 0; } // Check if queue is full (does not hold locks). |