From 75af6aed482ab16997c1388fe801f74d11ec12a4 Mon Sep 17 00:00:00 2001 From: Martin Lucina Date: Mon, 23 Jan 2012 08:54:14 +0100 Subject: Imported Upstream version 2.1.9 --- doc/zmq.html | 158 ++++++++++++++++++++++++++++++++--------------------------- 1 file changed, 86 insertions(+), 72 deletions(-) (limited to 'doc/zmq.html') diff --git a/doc/zmq.html b/doc/zmq.html index b35c57e..bce168f 100644 --- a/doc/zmq.html +++ b/doc/zmq.html @@ -2,15 +2,28 @@ "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> - - + + zmq(7) - +
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SYNOPSIS

#include <zmq.h>

cc [flags] files -lzmq [libraries]

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DESCRIPTION

The ØMQ lightweight messaging kernel is a library which extends the standard @@ -596,7 +579,8 @@ and more.

This documentation presents an overview of ØMQ concepts, describes how ØMQ abstracts standard sockets and provides a reference manual for the functions provided by the ØMQ library.

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Context

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Context

Before using any ØMQ library functions the caller must initialise a ØMQ context using zmq_init(). The following functions are provided to handle initialisation and termination of a context:

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Thread safety

A ØMQ context is thread safe and may be shared among as many application threads as necessary, without any additional locking required on the part of @@ -628,12 +613,17 @@ 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().

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Multiple contexts

Multiple contexts may coexist within a single application. Thus, an application can use ØMQ directly and at the same time make use of any number of additional libraries or components which themselves make use of ØMQ as long as the above guidelines regarding thread safety are adhered to.

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Messages

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Messages

A ØMQ message is a discrete unit of data passed between applications or components of the same application. ØMQ messages have no internal structure and from the point of view of ØMQ itself they are considered to be opaque binary @@ -677,7 +667,9 @@ Message manipulation

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Sockets

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Sockets

ØMQ sockets present an abstraction of a asynchronous message queue, with the exact queueing semantics depending on the socket type in use. See zmq_socket(3) for the socket types provided.

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Transports

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Transports

A ØMQ socket can use multiple different underlying transport mechanisms. Each transport mechanism is suited to a particular purpose and has its own advantages and drawbacks.

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Devices

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Devices

ØMQ 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.

You can start a device in an application thread, see zmq_device(3).

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ERROR HANDLING

The ØMQ library functions handle errors using the standard conventions found on @@ -790,6 +789,8 @@ to assist in these cases; for details refer to zmq_errn

The zmq_strerror() function is provided to translate ØMQ-specific error codes into error message strings; for details refer to zmq_strerror(3).

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MISCELLANEOUS

The following miscellaneous functions are provided:

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LANGUAGE BINDINGS

The ØMQ library provides interfaces suitable for calling from programs in any @@ -811,23 +814,33 @@ language; this documentation documents those interfaces as they would be used by C programmers. The intent is that programmers using ØMQ from other languages shall refer to this documentation alongside any documentation provided by the vendor of their language binding.

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C++ language binding

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C++ language binding

The ØMQ distribution includes a C++ language binding, which is documented separately in zmq_cpp(7).

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Other language bindings

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Other language bindings

Other language bindings (Python, Ruby, Java and more) are provided by members of the ØMQ community and pointers can be found on the ØMQ website.

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AUTHORS

This ØMQ manual page was written by Martin Sustrik <sustrik@250bpm.com> and Martin Lucina <mato@kotelna.sk>.

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RESOURCES

Main web site: http://www.zeromq.org/

Report bugs to the ØMQ development mailing list: <zeromq-dev@lists.zeromq.org>

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COPYING

Free use of this software is granted under the terms of the GNU Lesser General @@ -835,11 +848,12 @@ Public License (LGPL). For details see the files COPYING and COPYIN included with the ØMQ distribution.

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