shaka-packager/docs/d2/d23/threaded__io__file_8cc_sour...

315 lines
39 KiB
HTML
Raw Normal View History

<!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"/>
2021-06-22 00:16:40 +00:00
<meta name="generator" content="Doxygen 1.8.17"/>
2018-02-10 23:37:42 +00:00
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Shaka Packager SDK: packager/file/threaded_io_file.cc 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"/>
2018-02-10 23:37:42 +00:00
<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;">
2018-02-10 23:37:42 +00:00
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Shaka Packager SDK
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
2021-06-22 00:16:40 +00:00
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
2021-06-22 00:16:40 +00:00
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
/* @license-end */
</script>
2018-02-10 23:37:42 +00:00
<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 */
2018-02-10 23:37:42 +00:00
$(function() {
initMenu('../../',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
2018-02-10 23:37:42 +00:00
<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)">
2018-02-10 23:37:42 +00:00
</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_d258fb6e36cbaad69b44b6c9489b2bbb.html">file</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">threaded_io_file.cc</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 2015 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">#include &quot;packager/file/threaded_io_file.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160; </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;packager/base/bind.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/base/bind_helpers.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/base/location.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/base/threading/worker_pool.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</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;ThreadedIoFile::ThreadedIoFile(std::unique_ptr&lt;File, FileCloser&gt; internal_file,</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; Mode mode,</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; uint64_t io_cache_size,</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; uint64_t io_block_size)</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; : File(internal_file-&gt;file_name()),</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; internal_file_(std::move(internal_file)),</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; mode_(mode),</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; cache_(io_cache_size),</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; io_buffer_(io_block_size),</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; position_(0),</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; size_(0),</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; eof_(false),</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; flushing_(false),</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; flush_complete_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; base::WaitableEvent::InitialState::NOT_SIGNALED),</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; internal_file_error_(0),</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; task_exit_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; base::WaitableEvent::InitialState::NOT_SIGNALED) {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;}</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;ThreadedIoFile::~ThreadedIoFile() {}</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a353eb138e2f23f4e75c8c56580050aa0"> 39</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a353eb138e2f23f4e75c8c56580050aa0">ThreadedIoFile::Open</a>() {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">if</span> (!internal_file_-&gt;Open())</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</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; position_ = 0;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; size_ = internal_file_-&gt;Size();</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; base::WorkerPool::PostTask(</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; FROM_HERE,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; base::Bind(&amp;ThreadedIoFile::TaskHandler, base::Unretained(<span class="keyword">this</span>)),</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">true</span> <span class="comment">/* task_is_slow */</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a79292b93c39f609b5348787a39fc77b2"> 55</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a79292b93c39f609b5348787a39fc77b2">ThreadedIoFile::Close</a>() {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordtype">bool</span> result = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">if</span> (mode_ == kOutputMode)</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; result = <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a2b53b72d99aad4439781e3887492452c">Flush</a>();</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">Close</a>();</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; task_exit_event_.Wait();</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; result &amp;= internal_file_.release()-&gt;Close();</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">delete</span> <span class="keyword">this</span>;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;}</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af45702d95d4e46e93b1f4a897844212e"> 70</a></span>&#160;int64_t <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af45702d95d4e46e93b1f4a897844212e">ThreadedIoFile::Read</a>(<span class="keywordtype">void</span>* buffer, uint64_t length) {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; DCHECK_EQ(kInputMode, mode_);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">if</span> (eof_.load(std::memory_order_relaxed) &amp;&amp; !cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a8033da711e62112877be7a6ac2186622">BytesCached</a>())</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">if</span> (internal_file_error_.load(std::memory_order_relaxed))</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> internal_file_error_.load(std::memory_order_relaxed);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; uint64_t bytes_read = cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a7cc144c2f848725db08b3ca175475fc2">Read</a>(buffer, length);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; position_ += bytes_read;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">return</span> bytes_read;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#ab8acfe4af14c1120ae6d2baa44a10583"> 86</a></span>&#160;int64_t <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#ab8acfe4af14c1120ae6d2baa44a10583">ThreadedIoFile::Write</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* buffer, uint64_t length) {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; DCHECK_EQ(kOutputMode, mode_);</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"> 90</span>&#160; <span class="keywordflow">if</span> (internal_file_error_.load(std::memory_order_relaxed))</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">return</span> internal_file_error_.load(std::memory_order_relaxed);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; uint64_t bytes_written = cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a483277a6c68dd58cebb8dafb5c1dcd21">Write</a>(buffer, length);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; position_ += bytes_written;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordflow">if</span> (position_ &gt; size_)</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; size_ = position_;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">return</span> bytes_written;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;}</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af23f2da404e1602c240bb59d2601f1b9"> 101</a></span>&#160;int64_t <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af23f2da404e1602c240bb59d2601f1b9">ThreadedIoFile::Size</a>() {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> size_;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a2b53b72d99aad4439781e3887492452c"> 107</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a2b53b72d99aad4439781e3887492452c">ThreadedIoFile::Flush</a>() {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; DCHECK_EQ(kOutputMode, mode_);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">if</span> (internal_file_error_.load(std::memory_order_relaxed))</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; flushing_ = <span class="keyword">true</span>;</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">Close</a>();</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; flush_complete_event_.Wait();</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">return</span> internal_file_-&gt;Flush();</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;}</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a9b95550cf6342f970645c086a2ed58c2"> 120</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a9b95550cf6342f970645c086a2ed58c2">ThreadedIoFile::Seek</a>(uint64_t position) {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordflow">if</span> (mode_ == kOutputMode) {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="comment">// Writing. Just flush the cache and seek.</span></div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a2b53b72d99aad4439781e3887492452c">Flush</a>())</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">if</span> (!internal_file_-&gt;Seek(position))</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="comment">// Reading. Close cache, wait for thread task to exit, seek, and re-post</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="comment">// the task.</span></div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">Close</a>();</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; task_exit_event_.Wait();</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="keywordtype">bool</span> result = internal_file_-&gt;Seek(position);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordflow">if</span> (!result) {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="comment">// Seek failed. Seek to logical position instead.</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keywordflow">if</span> (!internal_file_-&gt;Seek(position_) &amp;&amp; (position != position_)) {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; LOG(WARNING) &lt;&lt; <span class="stringliteral">&quot;Seek failed. ThreadedIoFile left in invalid state.&quot;</span>;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; }</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#ac2c7cbec6d771de00fe0cfe0b7d0e454">Reopen</a>();</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; eof_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; base::WorkerPool::PostTask(</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; FROM_HERE,</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; base::Bind(&amp;ThreadedIoFile::TaskHandler, base::Unretained(<span class="keyword">this</span>)),</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keyword">true</span> <span class="comment">/* task_is_slow */</span>);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">if</span> (!result)</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; }</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; position_ = position;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;}</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; </div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a6ee5bcbe6bb8dd232679b2c50d968f4e"> 152</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a6ee5bcbe6bb8dd232679b2c50d968f4e">ThreadedIoFile::Tell</a>(uint64_t* position) {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; DCHECK(position);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; *position = position_;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;}</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="keywordtype">void</span> ThreadedIoFile::TaskHandler() {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordflow">if</span> (mode_ == kInputMode)</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; RunInInputMode();</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; RunInOutputMode();</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; task_exit_event_.Signal();</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;}</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="keywordtype">void</span> ThreadedIoFile::RunInInputMode() {</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; DCHECK_EQ(kInputMode, mode_);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; int64_t read_result =</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; internal_file_-&gt;Read(&amp;io_buffer_[0], io_buffer_.size());</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordflow">if</span> (read_result &lt;= 0) {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; eof_.store(read_result == 0, std::memory_order_relaxed);</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; internal_file_error_.store(read_result, std::memory_order_relaxed);</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">Close</a>();</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; }</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordflow">if</span> (cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a483277a6c68dd58cebb8dafb5c1dcd21">Write</a>(&amp;io_buffer_[0], read_result) == 0) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;}</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="keywordtype">void</span> ThreadedIoFile::RunInOutputMode() {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; DCHECK(internal_file_);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; DCHECK_EQ(kOutputMode, mode_);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; uint64_t write_bytes = cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a7cc144c2f848725db08b3ca175475fc2">Read</a>(&amp;io_buffer_[0], io_buffer_.size());</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keywordflow">if</span> (write_bytes == 0) {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordflow">if</span> (flushing_) {</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#ac2c7cbec6d771de00fe0cfe0b7d0e454">Reopen</a>();</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; flushing_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; flush_complete_event_.Signal();</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; uint64_t bytes_written(0);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordflow">while</span> (bytes_written &lt; write_bytes) {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; int64_t write_result = internal_file_-&gt;Write(</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; &amp;io_buffer_[bytes_written], write_bytes - bytes_written);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordflow">if</span> (write_result &lt; 0) {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; internal_file_error_.store(write_result, std::memory_order_relaxed);</div>
2021-06-22 00:16:40 +00:00
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; cache_.<a class="code" href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">Close</a>();</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordflow">if</span> (flushing_) {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; flushing_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; flush_complete_event_.Signal();</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; bytes_written += write_result;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; }</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; }</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;}</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;} <span class="comment">// namespace shaka</span></div>
</div><!-- fragment --></div><!-- contents -->
2021-06-22 00:16:40 +00:00
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_af45702d95d4e46e93b1f4a897844212e"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af45702d95d4e46e93b1f4a897844212e">shaka::ThreadedIoFile::Read</a></div><div class="ttdeci">int64_t Read(void *buffer, uint64_t length) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00070">threaded_io_file.cc:70</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_af23f2da404e1602c240bb59d2601f1b9"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#af23f2da404e1602c240bb59d2601f1b9">shaka::ThreadedIoFile::Size</a></div><div class="ttdeci">int64_t Size() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00101">threaded_io_file.cc:101</a></div></div>
<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_1IoCache_html_a483277a6c68dd58cebb8dafb5c1dcd21"><div class="ttname"><a href="../../df/d4e/classshaka_1_1IoCache.html#a483277a6c68dd58cebb8dafb5c1dcd21">shaka::IoCache::Write</a></div><div class="ttdeci">uint64_t Write(const void *buffer, uint64_t size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d37/io__cache_8cc_source.html#l00066">io_cache.cc:66</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_a353eb138e2f23f4e75c8c56580050aa0"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a353eb138e2f23f4e75c8c56580050aa0">shaka::ThreadedIoFile::Open</a></div><div class="ttdeci">bool Open() override</div><div class="ttdoc">Internal open. Should not be used directly.</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00039">threaded_io_file.cc:39</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_a6ee5bcbe6bb8dd232679b2c50d968f4e"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a6ee5bcbe6bb8dd232679b2c50d968f4e">shaka::ThreadedIoFile::Tell</a></div><div class="ttdeci">bool Tell(uint64_t *position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00152">threaded_io_file.cc:152</a></div></div>
<div class="ttc" id="aclassshaka_1_1IoCache_html_a1c54ca1d747cf0b0b9ab681babff73e6"><div class="ttname"><a href="../../df/d4e/classshaka_1_1IoCache.html#a1c54ca1d747cf0b0b9ab681babff73e6">shaka::IoCache::Close</a></div><div class="ttdeci">void Close()</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d37/io__cache_8cc_source.html#l00112">io_cache.cc:112</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_a9b95550cf6342f970645c086a2ed58c2"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a9b95550cf6342f970645c086a2ed58c2">shaka::ThreadedIoFile::Seek</a></div><div class="ttdeci">bool Seek(uint64_t position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00120">threaded_io_file.cc:120</a></div></div>
<div class="ttc" id="aclassshaka_1_1IoCache_html_a8033da711e62112877be7a6ac2186622"><div class="ttname"><a href="../../df/d4e/classshaka_1_1IoCache.html#a8033da711e62112877be7a6ac2186622">shaka::IoCache::BytesCached</a></div><div class="ttdeci">uint64_t BytesCached()</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d37/io__cache_8cc_source.html#l00128">io_cache.cc:128</a></div></div>
<div class="ttc" id="aclassshaka_1_1IoCache_html_a7cc144c2f848725db08b3ca175475fc2"><div class="ttname"><a href="../../df/d4e/classshaka_1_1IoCache.html#a7cc144c2f848725db08b3ca175475fc2">shaka::IoCache::Read</a></div><div class="ttdeci">uint64_t Read(void *buffer, uint64_t size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d37/io__cache_8cc_source.html#l00038">io_cache.cc:38</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_ab8acfe4af14c1120ae6d2baa44a10583"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#ab8acfe4af14c1120ae6d2baa44a10583">shaka::ThreadedIoFile::Write</a></div><div class="ttdeci">int64_t Write(const void *buffer, uint64_t length) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00086">threaded_io_file.cc:86</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_a79292b93c39f609b5348787a39fc77b2"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a79292b93c39f609b5348787a39fc77b2">shaka::ThreadedIoFile::Close</a></div><div class="ttdeci">bool Close() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00055">threaded_io_file.cc:55</a></div></div>
<div class="ttc" id="aclassshaka_1_1IoCache_html_ac2c7cbec6d771de00fe0cfe0b7d0e454"><div class="ttname"><a href="../../df/d4e/classshaka_1_1IoCache.html#ac2c7cbec6d771de00fe0cfe0b7d0e454">shaka::IoCache::Reopen</a></div><div class="ttdeci">void Reopen()</div><div class="ttdoc">Reopens the cache. Any data still in the cache will be lost.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d37/io__cache_8cc_source.html#l00119">io_cache.cc:119</a></div></div>
<div class="ttc" id="aclassshaka_1_1ThreadedIoFile_html_a2b53b72d99aad4439781e3887492452c"><div class="ttname"><a href="../../dd/d0c/classshaka_1_1ThreadedIoFile.html#a2b53b72d99aad4439781e3887492452c">shaka::ThreadedIoFile::Flush</a></div><div class="ttdeci">bool Flush() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d23/threaded__io__file_8cc_source.html#l00107">threaded_io_file.cc:107</a></div></div>
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
2021-06-22 00:16:40 +00:00
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>