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103 lines
4.1 KiB
103 lines
4.1 KiB
'\" t
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.\" Title: zmq_inproc
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.\" Author: [see the "AUTHORS" section]
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.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
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.\" Date: 02/18/2017
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.\" Manual: 0MQ Manual
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.\" Source: 0MQ 4.2.2
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.\" Language: English
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.\"
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.TH "ZMQ_INPROC" "7" "02/18/2017" "0MQ 4\&.2\&.2" "0MQ Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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zmq_inproc \- 0MQ local in\-process (inter\-thread) communication transport
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.SH "SYNOPSIS"
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.sp
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The in\-process transport passes messages via memory directly between threads sharing a single 0MQ \fIcontext\fR\&.
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.if n \{\
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.sp
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.\}
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.RS 4
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.it 1 an-trap
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.nr an-no-space-flag 1
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.nr an-break-flag 1
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.br
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.ps +1
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\fBNote\fR
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.ps -1
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.br
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.sp
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No I/O threads are involved in passing messages using the \fIinproc\fR transport\&. Therefore, if you are using a 0MQ \fIcontext\fR for in\-process messaging only you can initialise the \fIcontext\fR with zero I/O threads\&. See \fBzmq_init\fR(3) for details\&.
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.sp .5v
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.RE
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.SH "ADDRESSING"
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.sp
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A 0MQ endpoint is a string consisting of a \fItransport\fR:// followed by an \fIaddress\fR\&. The \fItransport\fR specifies the underlying protocol to use\&. The \fIaddress\fR specifies the transport\-specific address to connect to\&.
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.sp
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For the in\-process transport, the transport is inproc, and the meaning of the \fIaddress\fR part is defined below\&.
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.SS "Assigning a local address to a socket"
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.sp
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When assigning a local address to a \fIsocket\fR using \fIzmq_bind()\fR with the \fIinproc\fR transport, the \fIendpoint\fR shall be interpreted as an arbitrary string identifying the \fIname\fR to create\&. The \fIname\fR must be unique within the 0MQ \fIcontext\fR associated with the \fIsocket\fR and may be up to 256 characters in length\&. No other restrictions are placed on the format of the \fIname\fR\&.
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.SS "Connecting a socket"
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.sp
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When connecting a \fIsocket\fR to a peer address using \fIzmq_connect()\fR with the \fIinproc\fR transport, the \fIendpoint\fR shall be interpreted as an arbitrary string identifying the \fIname\fR to connect to\&. Before version 4\&.0 he \fIname\fR must have been previously created by assigning it to at least one \fIsocket\fR within the same 0MQ \fIcontext\fR as the \fIsocket\fR being connected\&. Since version 4\&.0 the order of \fIzmq_bind()\fR and \fIzmq_connect()\fR does not matter just like for the tcp transport type\&.
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.SH "EXAMPLES"
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.PP
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\fBAssigning a local address to a socket\fR.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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// Assign the in\-process name "#1"
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rc = zmq_bind(socket, "inproc://#1");
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assert (rc == 0);
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// Assign the in\-process name "my\-endpoint"
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rc = zmq_bind(socket, "inproc://my\-endpoint");
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assert (rc == 0);
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.fi
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.if n \{\
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.RE
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.\}
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.PP
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\fBConnecting a socket\fR.
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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// Connect to the in\-process name "#1"
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rc = zmq_connect(socket, "inproc://#1");
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assert (rc == 0);
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// Connect to the in\-process name "my\-endpoint"
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rc = zmq_connect(socket, "inproc://my\-endpoint");
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assert (rc == 0);
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.fi
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.if n \{\
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.RE
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.\}
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.sp
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.SH "SEE ALSO"
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.sp
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\fBzmq_bind\fR(3) \fBzmq_connect\fR(3) \fBzmq_ipc\fR(7) \fBzmq_tcp\fR(7) \fBzmq_pgm\fR(7) \fBzmq_vmci\fR(7) \fBzmq\fR(7)
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.SH "AUTHORS"
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.sp
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This page was written by the 0MQ community\&. To make a change please read the 0MQ Contribution Policy at \m[blue]\fBhttp://www\&.zeromq\&.org/docs:contributing\fR\m[]\&.
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