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| -rw-r--r-- | NEWS | 54 |
1 files changed, 39 insertions, 15 deletions
@@ -1,30 +1,54 @@ -0MQ version 2.0.7 (Beta), released on 2010/06/XX +0MQ version 2.0.7 (Beta), released on 2010/06/04 ================================================ + +Distribution +------------ + +* The core documentation has been updated with many clarifications, especially + in the description of the functionality provided by the different socket + types. + +* The version of OpenPGM bundled with 0MQ has been updated to the 2.1.26 release. + + Interface --------- -* zmq_init has a single parameter now: number of I/O threads in the thread pool. - All the remaining parameters where dropped. -* ZMQ_P2P socket type was renamed to ZMQ_PAIR. -* LWM socket option was dropped. +* The zmq_init() function now has only a single parameter; the number of 0MQ + I/O threads to create in the context being initialised. The app_threads and + flags parameters have been removed. + +* The ZMQ_P2P socket type has been renamed to ZMQ_PAIR. + +* The ZMQ_LWM socket option has been removed; the low water mark for a socket + is now computed automatically by 0MQ. New functionality ----------------- -* Multi-hop REQ/REP pattern is fully supported. This feature allows to put - a device(s) between REP and REP sockets thus allowing for scenarios like - multi-threaded server, shared service queue etc. The whole infrastructure - is transparent to the applications. +* Multi-hop request/reply is fully supported. This feature allows the insertion + of device(s) between ZMQ_REQ and ZMQ_REP sockets thus enabling scenarios + such as multi-threaded server, shared service queue, and other interesting + messaging topologies. The entire infrastructure is transparent to + applications. + +* Multi-part messages. A 0MQ message may now be composed of 1 or more message + parts; each message part is an independent zmq_msg_t in its own right. 0MQ + ensures atomic delivery of messages; peers shall receive either all message + parts of a message or none at all. + + This feature allows for seamless zero-copy message passing when data are + scattered in memory, and is an important building block for multi-hop + messaging topologies. -* Multi-part messages. Message may now be composed from several parts. This - feature allows for seamless zero-copy message passing when data are scattered - in the memory. Moreover it gives 0MQ message some basic structure. +* Context termination and ETERM. The zmq_term() function has been + changed to interrupt any blocking operations on open sockets, causing them to + return the newly defined ETERM error code. This allows for orderly + application termination, especially when multiple application threads are + involved. -* Sane termination of multiple threads. This means that main thread can - terminate the messaging library causing all blocking functions to unblock - and allow for orderly application termination. 0MQ version 2.0.6 (Beta), released on 2010/03/16 ================================================ |