You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.9 KiB
86 lines
2.9 KiB
5 years ago
|
'\" t
|
||
|
|
.\" Title: zmq_ctx_get
|
||
|
|
.\" Author: [see the "AUTHORS" section]
|
||
|
|
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
|
||
|
|
.\" Date: 09/14/2016
|
||
|
|
.\" Manual: 0MQ Manual
|
||
|
|
.\" Source: 0MQ 4.1.5
|
||
|
|
.\" Language: English
|
||
|
|
.\"
|
||
|
|
.TH "ZMQ_CTX_GET" "3" "09/14/2016" "0MQ 4\&.1\&.5" "0MQ Manual"
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.\" * Define some portability stuff
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
.\" http://bugs.debian.org/507673
|
||
|
|
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
|
||
|
|
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
.ie \n(.g .ds Aq \(aq
|
||
|
|
.el .ds Aq '
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.\" * set default formatting
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.\" disable hyphenation
|
||
|
|
.nh
|
||
|
|
.\" disable justification (adjust text to left margin only)
|
||
|
|
.ad l
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.\" * MAIN CONTENT STARTS HERE *
|
||
|
|
.\" -----------------------------------------------------------------
|
||
|
|
.SH "NAME"
|
||
|
|
zmq_ctx_get \- get context options
|
||
|
|
.SH "SYNOPSIS"
|
||
|
|
.sp
|
||
|
|
\fBint zmq_ctx_get (void \fR\fB\fI*context\fR\fR\fB, int \fR\fB\fIoption_name\fR\fR\fB);\fR
|
||
|
|
.SH "DESCRIPTION"
|
||
|
|
.sp
|
||
|
|
The \fIzmq_ctx_get()\fR function shall return the option specified by the \fIoption_name\fR argument\&.
|
||
|
|
.sp
|
||
|
|
The \fIzmq_ctx_get()\fR function accepts the following option names:
|
||
|
|
.SS "ZMQ_IO_THREADS: Get number of I/O threads"
|
||
|
|
.sp
|
||
|
|
The \fIZMQ_IO_THREADS\fR argument returns the size of the 0MQ thread pool for this context\&.
|
||
|
|
.SS "ZMQ_MAX_SOCKETS: Get maximum number of sockets"
|
||
|
|
.sp
|
||
|
|
The \fIZMQ_MAX_SOCKETS\fR argument returns the maximum number of sockets allowed for this context\&.
|
||
|
|
.SS "ZMQ_SOCKET_LIMIT: Get largest configurable number of sockets"
|
||
|
|
.sp
|
||
|
|
The \fIZMQ_SOCKET_LIMIT\fR argument returns the largest number of sockets that \fBzmq_ctx_set\fR(3) will accept\&.
|
||
|
|
.SS "ZMQ_IPV6: Set IPv6 option"
|
||
|
|
.sp
|
||
|
|
The \fIZMQ_IPV6\fR argument returns the IPv6 option for the context\&.
|
||
|
|
.SH "RETURN VALUE"
|
||
|
|
.sp
|
||
|
|
The \fIzmq_ctx_get()\fR function returns a value of 0 or greater if successful\&. Otherwise it returns \-1 and sets \fIerrno\fR to one of the values defined below\&.
|
||
|
|
.SH "ERRORS"
|
||
|
|
.PP
|
||
|
|
\fBEINVAL\fR
|
||
|
|
.RS 4
|
||
|
|
The requested option
|
||
|
|
\fIoption_name\fR
|
||
|
|
is unknown\&.
|
||
|
|
.RE
|
||
|
|
.SH "EXAMPLE"
|
||
|
|
.PP
|
||
|
|
\fBSetting a limit on the number of sockets\fR.
|
||
|
|
.sp
|
||
|
|
.if n \{\
|
||
|
|
.RS 4
|
||
|
|
.\}
|
||
|
|
.nf
|
||
|
|
void *context = zmq_ctx_new ();
|
||
|
|
zmq_ctx_set (context, ZMQ_MAX_SOCKETS, 256);
|
||
|
|
int max_sockets = zmq_ctx_get (context, ZMQ_MAX_SOCKETS);
|
||
|
|
assert (max_sockets == 256);
|
||
|
|
.fi
|
||
|
|
.if n \{\
|
||
|
|
.RE
|
||
|
|
.\}
|
||
|
|
.sp
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.sp
|
||
|
|
\fBzmq_ctx_set\fR(3) \fBzmq\fR(7)
|
||
|
|
.SH "AUTHORS"
|
||
|
|
.sp
|
||
|
|
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[]\&.
|