shaka-packager/docs/d3/de6/job__manager_8h_source.html

192 lines
21 KiB
HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Shaka Packager SDK: packager/app/job_manager.h Source File</title>
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../jquery.js"></script>
<script type="text/javascript" src="../../dynsections.js"></script>
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../search/searchdata.js"></script>
<script type="text/javascript" src="../../search/search.js"></script>
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Shaka Packager SDK
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
/* @license-end */
</script>
<script type="text/javascript" src="../../menudata.js"></script>
<script type="text/javascript" src="../../menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('../../',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_bf7f1d16febc509cca62cff27fb88644.html">app</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">job_manager.h</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2017 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// license that can be found in the LICENSE file or at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160; </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#ifndef PACKAGER_APP_JOB_MANAGER_H_</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#define PACKAGER_APP_JOB_MANAGER_H_</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;packager/base/threading/simple_thread.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;packager/status.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">class </span>OriginHandler;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">class </span>SyncPointQueue;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment">// A job is a single line of work that is expected to run in parallel with</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment">// other jobs.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="../../d0/d59/classshaka_1_1media_1_1Job.html"> 24</a></span>&#160;<span class="keyword">class </span><a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a> : <span class="keyword">public</span> base::SimpleThread {</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a>(<span class="keyword">const</span> std::string&amp; name, std::shared_ptr&lt;OriginHandler&gt; work);</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="comment">// Request that the job stops executing. This is only a request and</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="comment">// will not block. If you want to wait for the job to complete, use</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="comment">// |wait|.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="keywordtype">void</span> Cancel();</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="comment">// Get the current status of the job. If the job failed to initialize</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="comment">// or encountered an error during execution this will return the error.</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a>&amp; status()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> status_; }</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="comment">// If you want to wait for this job to complete, this will return the</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="comment">// WaitableEvent you can wait on.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; base::WaitableEvent* wait() { <span class="keywordflow">return</span> &amp;wait_; }</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a>(<span class="keyword">const</span> <a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d0/d59/classshaka_1_1media_1_1Job.html">Job</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordtype">void</span> Run() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; std::shared_ptr&lt;OriginHandler&gt; work_;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> status_;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; base::WaitableEvent wait_;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;};</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment">// Similar to a thread pool, JobManager manages multiple jobs that are expected</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">// to run in parallel. It can be used to register, run, and stop a batch of</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment">// jobs.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html"> 56</a></span>&#160;<span class="keyword">class </span><a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a> {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// @param sync_points is an optional SyncPointQueue used to synchronize and</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="comment">// align cue points. JobManager cancels @a sync_points when any job</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="comment">// fails or is cancelled. It can be NULL.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">explicit</span> <a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>(std::unique_ptr&lt;SyncPointQueue&gt; sync_points);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">virtual</span> ~<a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="comment">// Create a new job entry by specifying the origin handler at the top of the</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// chain and a name for the thread. This will only register the job. To start</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">// the job, you need to call |RunJobs|.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">void</span> Add(<span class="keyword">const</span> std::string&amp; name, std::shared_ptr&lt;OriginHandler&gt; handler);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="comment">// Initialize all registered jobs. If any job fails to initialize, this will</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="comment">// return the error and it will not be safe to call |RunJobs| as not all jobs</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="comment">// will be properly initialized.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keyword">virtual</span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> InitializeJobs();</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="comment">// Run all registered jobs. Before calling this make sure that</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="comment">// |InitializedJobs| returned |Status::OK|. This call is blocking and will</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="comment">// block until all jobs exit.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keyword">virtual</span> <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> RunJobs();</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="comment">// Ask all jobs to stop running. This call is non-blocking and can be used to</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="comment">// unblock a call to |RunJobs|.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordtype">void</span> CancelJobs();</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <a class="code" href="../../d0/dea/classshaka_1_1media_1_1SyncPointQueue.html">SyncPointQueue</a>* sync_points() { <span class="keywordflow">return</span> sync_points_.get(); }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>(<span class="keyword">const</span> <a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">JobManager</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="../../d2/d76/structshaka_1_1media_1_1JobManager_1_1JobEntry.html"> 90</a></span>&#160; <span class="keyword">struct </span><a class="code" href="../../d2/d76/structshaka_1_1media_1_1JobManager_1_1JobEntry.html">JobEntry</a> {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; std::string name;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; std::shared_ptr&lt;OriginHandler&gt; worker;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; };</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="comment">// Stores Job entries for delayed construction of Job object.</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; std::vector&lt;JobEntry&gt; job_entries_;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; std::vector&lt;std::unique_ptr&lt;Job&gt;&gt; jobs_;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// Stored in JobManager so JobManager can cancel |sync_points| when any job</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="comment">// fails or is cancelled.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; std::unique_ptr&lt;SyncPointQueue&gt; sync_points_;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;};</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;} <span class="comment">// namespace shaka</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="preprocessor">#endif // PACKAGER_APP_JOB_MANAGER_H_</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
<div class="ttc" id="aclassshaka_1_1media_1_1SyncPointQueue_html"><div class="ttname"><a href="../../d0/dea/classshaka_1_1media_1_1SyncPointQueue.html">shaka::media::SyncPointQueue</a></div><div class="ttdoc">A synchronized queue for cue points.</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d5f/sync__point__queue_8h_source.html#l00020">sync_point_queue.h:20</a></div></div>
<div class="ttc" id="aclassshaka_1_1media_1_1JobManager_html"><div class="ttname"><a href="../../d3/d53/classshaka_1_1media_1_1JobManager.html">shaka::media::JobManager</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/de6/job__manager_8h_source.html#l00056">job_manager.h:56</a></div></div>
<div class="ttc" id="aclassshaka_1_1Status_html"><div class="ttname"><a href="../../d2/d20/classshaka_1_1Status.html">shaka::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00110">status.h:110</a></div></div>
<div class="ttc" id="aclassshaka_1_1media_1_1Job_html"><div class="ttname"><a href="../../d0/d59/classshaka_1_1media_1_1Job.html">shaka::media::Job</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/de6/job__manager_8h_source.html#l00024">job_manager.h:24</a></div></div>
<div class="ttc" id="astructshaka_1_1media_1_1JobManager_1_1JobEntry_html"><div class="ttname"><a href="../../d2/d76/structshaka_1_1media_1_1JobManager_1_1JobEntry.html">shaka::media::JobManager::JobEntry</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/de6/job__manager_8h_source.html#l00090">job_manager.h:90</a></div></div>
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Tue Jun 22 2021 00:16:03 for Shaka Packager SDK by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="../../doxygen.png" alt="doxygen"/>
</a> 1.8.17
</small></address>
</body>
</html>