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Diffstat (limited to 'doc/zmq.txt')
| -rw-r--r-- | doc/zmq.txt | 32 |
1 files changed, 15 insertions, 17 deletions
diff --git a/doc/zmq.txt b/doc/zmq.txt index 06658c9..16a5d30 100644 --- a/doc/zmq.txt +++ b/doc/zmq.txt @@ -44,9 +44,15 @@ Terminate 0MQ context:: Thread safety ^^^^^^^^^^^^^ A 0MQ 'context' is thread safe and may be shared among as many application -threads as necessary, without any additional locking required on the part of the -caller. Each 0MQ socket belonging to a particular 'context' may only be used -by *the thread that created it* using _zmq_socket()_. +threads as necessary, without any additional locking required on the part of +the caller. + +Individual 0MQ 'sockets' are _not_ thread safe except in the case where full +memory barriers are issued when migrating a socket from one thread to another. +In practice this means applications can create a socket in one thread with +_zmq_socket()_ and then pass it to a _newly created_ thread as part of thread +initialization, for example via a structure passed as an argument to +_pthread_create()_. Multiple contexts @@ -139,20 +145,12 @@ Local in-process (inter-thread) communication transport:: Devices ~~~~~~~ -Apart from the 0MQ library the 0MQ distribution includes 'devices' which are -building blocks intended to serve as intermediate nodes in complex messaging -topologies. - -The following devices are provided: - -Forwarder device for request-response messaging:: - linkzmq:zmq_queue[1] - -Forwarder device for publish-subscribe messaging:: - linkzmq:zmq_forwarder[1] +0MQ provides 'devices', which are building blocks that act as intermediate +nodes in complex messaging topologies. Devices can act as brokers that other +nodes connect to, proxies that connect through to other nodes, or any mix of +these two models. -Streamer device for parallelized pipeline messaging:: - linkzmq:zmq_streamer[1] +You can start a device in an application thread, see linkzmq:zmq_device[3]. ERROR HANDLING @@ -202,7 +200,7 @@ of the 0MQ community and pointers can be found on the 0MQ website. AUTHORS ------- -The 0MQ documentation was written by Martin Sustrik <sustrik@250bpm.com> and +This 0MQ manual page was written by Martin Sustrik <sustrik@250bpm.com> and Martin Lucina <mato@kotelna.sk>. |