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|
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<!DOCTYPE html
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Class: Fam::Connection</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<link rel="stylesheet" href="../.././rdoc-style.css" type="text/css" media="screen" />
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</head>
<body>
<div id="classHeader">
<table class="header-table">
<tr class="top-aligned-row">
<td><strong>Class</strong></td>
<td class="class-name-in-header">Fam::Connection</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../../files/fam_c.html">
fam.c
</a>
(<a href="http://cvs.pablotron.org/cgi-bin/viewcvs.cgi/fam-ruby/fam.c">CVS</a>)
<br />
</td>
</tr>
<tr class="top-aligned-row">
<td><strong>Parent:</strong></td>
<td>
Data
</td>
</tr>
</table>
</div>
<!-- banner header -->
<div id="bodyContent">
<div id="contextContent">
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000047">cancel</a>
<a href="#M000032">cancel_monitor</a>
<a href="#M000026">close</a>
<a href="#M000044">col</a>
<a href="#M000043">collection</a>
<a href="#M000051">debug=</a>
<a href="#M000035">debug_level=</a>
<a href="#M000053">descriptor</a>
<a href="#M000040">dir</a>
<a href="#M000039">directory</a>
<a href="#M000049">ev</a>
<a href="#M000036">fd</a>
<a href="#M000041">file</a>
<a href="#M000052">get_descriptor</a>
<a href="#M000054">get_fd</a>
<a href="#M000042">monitor_col</a>
<a href="#M000029">monitor_collection</a>
<a href="#M000038">monitor_dir</a>
<a href="#M000027">monitor_directory</a>
<a href="#M000028">monitor_file</a>
<a href="#M000025">new</a>
<a href="#M000022">new</a>
<a href="#M000048">next_ev</a>
<a href="#M000033">next_event</a>
<a href="#M000037">no_exists</a>
<a href="#M000023">open</a>
<a href="#M000024">open2</a>
<a href="#M000050">pending</a>
<a href="#M000034">pending?</a>
<a href="#M000046">resume</a>
<a href="#M000031">resume_monitor</a>
<a href="#M000045">suspend</a>
<a href="#M000030">suspend_monitor</a>
</div>
</div>
</div>
<!-- if includes -->
<div id="section">
<!-- if method_list -->
<div id="methods">
<h3 class="section-bar">Public Class methods</h3>
<div id="method-M000025" class="method-detail">
<a name="M000025"></a>
<div class="method-heading">
<a href="Connection.src/M000025.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000025.html');return false;">
<span class="method-name">new</span><span class="method-args">(...)</span>
</a>
</div>
<div class="method-description">
<p>
Create a new connection to the FAM daemon.
</p>
<p>
Raises an ArgumentError exception if the number of arguments is not 0 or 1,
or a <a href="Error.html">Fam::Error</a> exception if a connection to FAM
could not be established.
</p>
<p>
Examples:
</p>
<pre>
# connect and tell FAM the application is named 'foo'
fam = Fam::Connection.new 'foo'
# just connect
fam = Fam::Connection.new
</pre>
</div>
</div>
<div id="method-M000022" class="method-detail">
<a name="M000022"></a>
<div class="method-heading">
<a href="Connection.src/M000022.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000022.html');return false;">
<span class="method-name">new</span><span class="method-args">(...)</span>
</a>
</div>
<div class="method-description">
<p>
Create a new connection to the FAM daemon.
</p>
<p>
Examples:
</p>
<pre>
# connect and tell FAM the application is named 'foo'
fam = Fam::Connection.new 'foo'
# just connect
fam = Fam::Connection.new
</pre>
</div>
</div>
<div id="method-M000023" class="method-detail">
<a name="M000023"></a>
<div class="method-heading">
<a href="Connection.src/M000023.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000023.html');return false;">
<span class="method-name">open</span><span class="method-args">(...)</span>
</a>
</div>
<div class="method-description">
<p>
Create a new connection to the FAM daemon.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection.open2
</pre>
<p>
Examples:
</p>
<pre>
# connect and tell FAM the application is named 'foo'
fam = Fam::Connection.open 'foo'
# just connect
fam = Fam::Connection.open
# connect and close automatically
Fam::Connection.open('foo') {|fam| ... }
</pre>
</div>
</div>
<div id="method-M000024" class="method-detail">
<a name="M000024"></a>
<div class="method-heading">
<a href="Connection.src/M000024.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000024.html');return false;">
<span class="method-name">open2</span><span class="method-args">(...)</span>
</a>
</div>
<div class="method-description">
<p>
Create a new connection to the FAM daemon.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection.open2
</pre>
<p>
Examples:
</p>
<pre>
# connect and tell FAM the application is named 'foo'
fam = Fam::Connection.open 'foo'
# just connect
fam = Fam::Connection.open
# connect and close automatically
Fam::Connection.open('foo') {|fam| ... }
</pre>
</div>
</div>
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000047" class="method-detail">
<a name="M000047"></a>
<div class="method-heading">
<span class="method-name">cancel</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000032">cancel_monitor</a>
</p>
</div>
</div>
<div id="method-M000032" class="method-detail">
<a name="M000032"></a>
<div class="method-heading">
<a href="Connection.src/M000032.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000032.html');return false;">
<span class="method-name">cancel_monitor</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Cancel a monitor request.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the monitor
request could not be cancelled.
</p>
<p>
Note: this method invalidates the specified monitor request.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#cancel
</pre>
<p>
Examples:
</p>
<pre>
fam.cancel_monitor req
fam.cancel req
</pre>
</div>
</div>
<div id="method-M000026" class="method-detail">
<a name="M000026"></a>
<div class="method-heading">
<a href="Connection.src/M000026.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000026.html');return false;">
<span class="method-name">close</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
this causes a segfault, since ruby attempts to close the connection when it
goes out of scope. We‘ll let ruby take care of it. :)
</p>
</div>
</div>
<div id="method-M000044" class="method-detail">
<a name="M000044"></a>
<div class="method-heading">
<span class="method-name">col</span><span class="method-args">(p1, p2)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000029">monitor_collection</a>
</p>
</div>
</div>
<div id="method-M000043" class="method-detail">
<a name="M000043"></a>
<div class="method-heading">
<span class="method-name">collection</span><span class="method-args">(p1, p2)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000029">monitor_collection</a>
</p>
</div>
</div>
<div id="method-M000051" class="method-detail">
<a name="M000051"></a>
<div class="method-heading">
<span class="method-name">debug=</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000035">debug_level=</a>
</p>
</div>
</div>
<div id="method-M000035" class="method-detail">
<a name="M000035"></a>
<div class="method-heading">
<a href="Connection.src/M000035.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000035.html');return false;">
<span class="method-name">debug_level=</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Set the debug level of a <a href="Connection.html">Fam::Connection</a>
object.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception on failure. Note
that this method does not exist under Gamin.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#debug
</pre>
<p>
Examples:
</p>
<pre>
fam.debug = Fam::Debug::VERBOSE
</pre>
</div>
</div>
<div id="method-M000053" class="method-detail">
<a name="M000053"></a>
<div class="method-heading">
<span class="method-name">descriptor</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000036">fd</a>
</p>
</div>
</div>
<div id="method-M000040" class="method-detail">
<a name="M000040"></a>
<div class="method-heading">
<span class="method-name">dir</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000027">monitor_directory</a>
</p>
</div>
</div>
<div id="method-M000039" class="method-detail">
<a name="M000039"></a>
<div class="method-heading">
<span class="method-name">directory</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000027">monitor_directory</a>
</p>
</div>
</div>
<div id="method-M000049" class="method-detail">
<a name="M000049"></a>
<div class="method-heading">
<span class="method-name">ev</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000033">next_event</a>
</p>
</div>
</div>
<div id="method-M000036" class="method-detail">
<a name="M000036"></a>
<div class="method-heading">
<a href="Connection.src/M000036.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000036.html');return false;">
<span class="method-name">fd</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Get the file descriptor of a <a href="Connection.html">Fam::Connection</a>
object.
</p>
<p>
Note: This method allows you to wait for FAM events using select() instead
of polling via <a
href="Connection.html#M000050">Fam::Connection#pending</a> and <a
href="Connection.html#M000033">Fam::Connection#next_event</a>; see the
second example below for more information.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#get_descriptor
Fam::Connection#descriptor
Fam::Connection#get_fd
</pre>
<p>
Examples:
</p>
<pre>
# simple use
fd = fam.fd
# wrap the FAM connection descriptor in an IO object for use in a
# select() call
io = IO.new fam.fd, 'r'
select [io], , , 10
</pre>
</div>
</div>
<div id="method-M000041" class="method-detail">
<a name="M000041"></a>
<div class="method-heading">
<span class="method-name">file</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000028">monitor_file</a>
</p>
</div>
</div>
<div id="method-M000052" class="method-detail">
<a name="M000052"></a>
<div class="method-heading">
<span class="method-name">get_descriptor</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000036">fd</a>
</p>
</div>
</div>
<div id="method-M000054" class="method-detail">
<a name="M000054"></a>
<div class="method-heading">
<span class="method-name">get_fd</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000036">fd</a>
</p>
</div>
</div>
<div id="method-M000042" class="method-detail">
<a name="M000042"></a>
<div class="method-heading">
<span class="method-name">monitor_col</span><span class="method-args">(p1, p2)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000029">monitor_collection</a>
</p>
</div>
</div>
<div id="method-M000029" class="method-detail">
<a name="M000029"></a>
<div class="method-heading">
<a href="Connection.src/M000029.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000029.html');return false;">
<span class="method-name">monitor_collection</span><span class="method-args">(p1, p2)</span>
</a>
</div>
<div class="method-description">
<p>
Monitor a collection.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the collection
could not be monitored. Note that this method exists under Gamin, but does
not actually do anything.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Collection#monitor_col
Fam::Collection#col
</pre>
<p>
Examples:
</p>
<pre>
req = fam.monitor_col 'download/images', 1, '*.jpg'
</pre>
</div>
</div>
<div id="method-M000038" class="method-detail">
<a name="M000038"></a>
<div class="method-heading">
<span class="method-name">monitor_dir</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000027">monitor_directory</a>
</p>
</div>
</div>
<div id="method-M000027" class="method-detail">
<a name="M000027"></a>
<div class="method-heading">
<a href="Connection.src/M000027.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000027.html');return false;">
<span class="method-name">monitor_directory</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Monitor a directory.
</p>
<p>
Returns a <a href="Request.html">Fam::Request</a> object, which is used to
identify the monitor associated with events.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the directory
could not be monitored.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#monitor_dir
Fam::Connection#directory
Fam::Connection#dir
</pre>
<p>
Examples:
</p>
<pre>
req = fam.monitor_directory '/tmp'
</pre>
</div>
</div>
<div id="method-M000028" class="method-detail">
<a name="M000028"></a>
<div class="method-heading">
<a href="Connection.src/M000028.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000028.html');return false;">
<span class="method-name">monitor_file</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Monitor a file.
</p>
<p>
Returns a <a href="Request.html">Fam::Request</a> object, which is used to
identify the monitor associated with events.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the file could
not be monitored.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#file
</pre>
<p>
Examples:
</p>
<pre>
req = fam.monitor_file '/var/log/messages'
</pre>
</div>
</div>
<div id="method-M000048" class="method-detail">
<a name="M000048"></a>
<div class="method-heading">
<span class="method-name">next_ev</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000033">next_event</a>
</p>
</div>
</div>
<div id="method-M000033" class="method-detail">
<a name="M000033"></a>
<div class="method-heading">
<a href="Connection.src/M000033.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000033.html');return false;">
<span class="method-name">next_event</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Get the next event from the event queue, or block until an event is
available.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if FAM
couldn’t check for pending events, or if FAM-Ruby couldn’t get
the next FAM event.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#next_ev
Fam::Connection#ev
</pre>
<p>
Examples:
</p>
<pre>
ev = fam.next_event
</pre>
</div>
</div>
<div id="method-M000037" class="method-detail">
<a name="M000037"></a>
<div class="method-heading">
<a href="Connection.src/M000037.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000037.html');return false;">
<span class="method-name">no_exists</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Gamin-specific extension for FAM to not propagate Exists events on
directory monitoring startup. This speeds up watching large directories but
can introduce a mismatch between the FAM view of the directory and the
program own view.
</p>
<p>
Has no effect if FAMNoExists is not available.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if an error is
encountered.
</p>
<p>
Examples:
</p>
<pre>
fam.no_exists
</pre>
</div>
</div>
<div id="method-M000050" class="method-detail">
<a name="M000050"></a>
<div class="method-heading">
<span class="method-name">pending</span><span class="method-args">()</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000034">pending?</a>
</p>
</div>
</div>
<div id="method-M000034" class="method-detail">
<a name="M000034"></a>
<div class="method-heading">
<a href="Connection.src/M000034.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000034.html');return false;">
<span class="method-name">pending?</span><span class="method-args">()</span>
</a>
</div>
<div class="method-description">
<p>
Are there any events in the queue?
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if FAM
couldn’t check for pending events.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#pending
</pre>
<p>
Examples:
</p>
<pre>
puts 'no events pending' unless fam.pending?
</pre>
</div>
</div>
<div id="method-M000046" class="method-detail">
<a name="M000046"></a>
<div class="method-heading">
<span class="method-name">resume</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000031">resume_monitor</a>
</p>
</div>
</div>
<div id="method-M000031" class="method-detail">
<a name="M000031"></a>
<div class="method-heading">
<a href="Connection.src/M000031.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000031.html');return false;">
<span class="method-name">resume_monitor</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Resume (start monitoring) a monitor request.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the monitor
request could not be resumed. Note that this method exists under Gamin, but
does not actually do anything.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#resume
</pre>
<p>
Examples:
</p>
<pre>
fam.resume_monitor req
fam.resume req
</pre>
</div>
</div>
<div id="method-M000045" class="method-detail">
<a name="M000045"></a>
<div class="method-heading">
<span class="method-name">suspend</span><span class="method-args">(p1)</span>
</div>
<div class="method-description">
<p>
Alias for <a href="Connection.html#M000030">suspend_monitor</a>
</p>
</div>
</div>
<div id="method-M000030" class="method-detail">
<a name="M000030"></a>
<div class="method-heading">
<a href="Connection.src/M000030.html" target="Code" class="method-signature"
onclick="popupCode('Connection.src/M000030.html');return false;">
<span class="method-name">suspend_monitor</span><span class="method-args">(p1)</span>
</a>
</div>
<div class="method-description">
<p>
Suspend (stop monitoring) a monitor request.
</p>
<p>
Raises a <a href="Error.html">Fam::Error</a> exception if the monitor
request could not be suspended. Note that this method exists under Gamin,
but does not actually do anything.
</p>
<p>
Aliases:
</p>
<pre>
Fam::Connection#suspend
</pre>
<p>
Examples:
</p>
<pre>
fam.suspend_monitor req
fam.suspend req
</pre>
</div>
</div>
</div>
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