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SerializedExecution.html
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SerializedExecution.html
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<!DOCTYPE html>
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Class: Concurrent::SerializedExecution
— Concurrent Ruby
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<div id="content"><h1>Class: Concurrent::SerializedExecution
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName"><span class='object_link'>Concurrent::Synchronization::LockableObject</span></span>
<ul class="fullTree">
<li>Object</li>
<li class="next"><span class='object_link'>Concurrent::Synchronization::LockableObject</span></li>
<li class="next">Concurrent::SerializedExecution</li>
</ul>
<a href="#" class="inheritanceTree">show all</a>
</dd>
</dl>
<dl>
<dt>Defined in:</dt>
<dd>lib/concurrent/executor/serialized_execution.rb</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>Ensures passed jobs in a serialized order never running at the same time.</p>
</div>
</div>
<div class="tags">
</div><h2>Defined Under Namespace</h2>
<p class="children">
<strong class="classes">Classes:</strong> <span class='object_link'><a href="SerializedExecution/Job.html" title="Concurrent::SerializedExecution::Job (class)">Job</a></span>
</p>
<h2>
Instance Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#initialize-instance_method" title="#initialize (instance method)">#<strong>initialize</strong> ⇒ SerializedExecution </a>
</span>
<span class="note title constructor">constructor</span>
<span class="summary_desc"><div class='inline'><p>A new instance of SerializedExecution.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#post-instance_method" title="#post (instance method)">#<strong>post</strong>(executor, *args) { ... } ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'><p>Submit a task to the executor for asynchronous processing.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#posts-instance_method" title="#posts (instance method)">#<strong>posts</strong>(posts) ⇒ undocumented </a>
</span>
<span class="summary_desc"><div class='inline'><p>As <span class='object_link'><a href="#post-instance_method" title="Concurrent::SerializedExecution#post (method)">#post</a></span> but allows to submit multiple tasks at once, it's guaranteed that they will not be interleaved by other tasks.</p>
</div></span>
</li>
</ul>
<div id="constructor_details" class="method_details_list">
<h2>Constructor Details</h2>
<div class="method_details first">
<h3 class="signature first" id="initialize-instance_method">
#<strong>initialize</strong> ⇒ <tt><span class='object_link'><a href="" title="Concurrent::SerializedExecution (class)">SerializedExecution</a></span></tt>
</h3><div class="docstring">
<div class="discussion">
<p>Returns a new instance of SerializedExecution</p>
</div>
</div>
<div class="tags">
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/concurrent/executor/serialized_execution.rb', line 11</span>
<span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span><span class='lparen'>(</span><span class='rparen'>)</span>
<span class='kw'>super</span><span class='lparen'>(</span><span class='rparen'>)</span>
<span class='id identifier rubyid_synchronize'>synchronize</span> <span class='lbrace'>{</span> <span class='id identifier rubyid_ns_initialize'>ns_initialize</span> <span class='rbrace'>}</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
</div>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="post-instance_method">
#<strong>post</strong>(executor, *args) { ... } ⇒ <tt>Boolean</tt>
</h3><div class="docstring">
<div class="discussion">
<p>Submit a task to the executor for asynchronous processing.</p>
</div>
</div>
<div class="tags">
<p class="tag_title">Parameters:</p>
<ul class="param">
<li>
<span class='name'>executor</span>
<span class='type'>(<tt>Executor</tt>)</span>
—
<div class='inline'><p>to be used for this job</p>
</div>
</li>
<li>
<span class='name'>args</span>
<span class='type'>(<tt><span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span></tt>)</span>
—
<div class='inline'><p>zero or more arguments to be passed to the task</p>
</div>
</li>
</ul>
<p class="tag_title">Yields:</p>
<ul class="yield">
<li>
<span class='type'></span>
<div class='inline'><p>the asynchronous task to perform</p>
</div>
</li>
</ul>
<p class="tag_title">Returns:</p>
<ul class="return">
<li>
<span class='type'>(<tt>Boolean</tt>)</span>
—
<div class='inline'><p><code>true</code> if the task is queued, <code>false</code> if the executor
is not running</p>
</div>
</li>
</ul>
<p class="tag_title">Raises:</p>
<ul class="raise">
<li>
<span class='type'>(<tt>ArgumentError</tt>)</span>
—
<div class='inline'><p>if no task is given</p>
</div>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/concurrent/executor/serialized_execution.rb', line 34</span>
<span class='kw'>def</span> <span class='id identifier rubyid_post'>post</span><span class='lparen'>(</span><span class='id identifier rubyid_executor'>executor</span><span class='comma'>,</span> <span class='op'>*</span><span class='id identifier rubyid_args'>args</span><span class='comma'>,</span> <span class='op'>&</span><span class='id identifier rubyid_task'>task</span><span class='rparen'>)</span>
<span class='id identifier rubyid_posts'>posts</span> <span class='lbracket'>[</span><span class='lbracket'>[</span><span class='id identifier rubyid_executor'>executor</span><span class='comma'>,</span> <span class='id identifier rubyid_args'>args</span><span class='comma'>,</span> <span class='id identifier rubyid_task'>task</span><span class='rbracket'>]</span><span class='rbracket'>]</span>
<span class='kw'>true</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="posts-instance_method">
#<strong>posts</strong>(posts) ⇒ <tt>undocumented</tt>
</h3><div class="docstring">
<div class="discussion">
<p>As <span class='object_link'><a href="#post-instance_method" title="Concurrent::SerializedExecution#post (method)">#post</a></span> but allows to submit multiple tasks at once, it's guaranteed that they will not
be interleaved by other tasks.</p>
</div>
</div>
<div class="tags">
<p class="tag_title">Parameters:</p>
<ul class="param">
<li>
<span class='name'>posts</span>
<span class='type'>(<tt><span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span><<span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span>(<span class='object_link'>ExecutorService</span>, <span class='object_link'><a href="Array.html" title="Concurrent::Array (class)">Array</a></span><Object>, Proc)></tt>)</span>
—
<div class='inline'><p>array of triplets where
first is a <span class='object_link'>ExecutorService</span>, second is array of args for task, third is a task (Proc)</p>
</div>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/concurrent/executor/serialized_execution.rb', line 44</span>
<span class='kw'>def</span> <span class='id identifier rubyid_posts'>posts</span><span class='lparen'>(</span><span class='id identifier rubyid_posts'>posts</span><span class='rparen'>)</span>
<span class='comment'># if can_overflow?
</span> <span class='comment'># raise ArgumentError, 'SerializedExecution does not support thread-pools which can overflow'
</span> <span class='comment'># end
</span>
<span class='kw'>return</span> <span class='kw'>nil</span> <span class='kw'>if</span> <span class='id identifier rubyid_posts'>posts</span><span class='period'>.</span><span class='id identifier rubyid_empty?'>empty?</span>
<span class='id identifier rubyid_jobs'>jobs</span> <span class='op'>=</span> <span class='id identifier rubyid_posts'>posts</span><span class='period'>.</span><span class='id identifier rubyid_map'>map</span> <span class='lbrace'>{</span> <span class='op'>|</span><span class='id identifier rubyid_executor'>executor</span><span class='comma'>,</span> <span class='id identifier rubyid_args'>args</span><span class='comma'>,</span> <span class='id identifier rubyid_task'>task</span><span class='op'>|</span> <span class='const'><span class='object_link'><a href="SerializedExecution/Job.html" title="Concurrent::SerializedExecution::Job (class)">Job</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="#initialize-instance_method" title="Concurrent::SerializedExecution#initialize (method)">new</a></span></span> <span class='id identifier rubyid_executor'>executor</span><span class='comma'>,</span> <span class='id identifier rubyid_args'>args</span><span class='comma'>,</span> <span class='id identifier rubyid_task'>task</span> <span class='rbrace'>}</span>
<span class='id identifier rubyid_job_to_post'>job_to_post</span> <span class='op'>=</span> <span class='id identifier rubyid_synchronize'>synchronize</span> <span class='kw'>do</span>
<span class='kw'>if</span> <span class='ivar'>@being_executed</span>
<span class='ivar'>@stash</span><span class='period'>.</span><span class='id identifier rubyid_push'>push</span><span class='lparen'>(</span><span class='op'>*</span><span class='id identifier rubyid_jobs'>jobs</span><span class='rparen'>)</span>
<span class='kw'>nil</span>
<span class='kw'>else</span>
<span class='ivar'>@being_executed</span> <span class='op'>=</span> <span class='kw'>true</span>
<span class='ivar'>@stash</span><span class='period'>.</span><span class='id identifier rubyid_push'>push</span><span class='lparen'>(</span><span class='op'>*</span><span class='id identifier rubyid_jobs'>jobs</span><span class='lbracket'>[</span><span class='int'>1</span><span class='op'>..</span><span class='op'>-</span><span class='int'>1</span><span class='rbracket'>]</span><span class='rparen'>)</span>
<span class='id identifier rubyid_jobs'>jobs</span><span class='period'>.</span><span class='id identifier rubyid_first'>first</span>
<span class='kw'>end</span>
<span class='kw'>end</span>
<span class='id identifier rubyid_call_job'>call_job</span> <span class='id identifier rubyid_job_to_post'>job_to_post</span> <span class='kw'>if</span> <span class='id identifier rubyid_job_to_post'>job_to_post</span>
<span class='kw'>true</span>
<span class='kw'>end</span></pre>
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