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<p><b></b>[Internal] Passes queued data between threads using a circular buffer with read and write pointers
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<div class="textblock"><code>#include "<a class="el" href="../../dc/da7/assert_8h_source.xhtml">assert.h</a>"</code><br/>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml">DataStructures::SingleProducerConsumer< SingleProducerConsumerType ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A single producer consumer implementation without critical sections. <a href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#details">More...</a><br/></td></tr>
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<tr class="memitem:a8fae0ac5ca81babf9c401d698fb1dc8e"><td class="memItemLeft" align="right" valign="top">static const int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e">MINIMUM_LIST_SIZE</a> =8</td></tr>
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<div class="textblock"><p><b></b>[Internal] Passes queued data between threads using a circular buffer with read and write pointers </p>
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<p>Definition in file <a class="el" href="../../d0/dcf/_single_producer_consumer_8h_source.xhtml">SingleProducerConsumer.h</a>.</p>
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<td class="memname">const int MINIMUM_LIST_SIZE =8</td>
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<p>Definition at line <a class="el" href="../../d0/dcf/_single_producer_consumer_8h_source.xhtml#l00027">27</a> of file <a class="el" href="../../d0/dcf/_single_producer_consumer_8h_source.xhtml">SingleProducerConsumer.h</a>.</p>
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<p>Referenced by <a class="el" href="../../d0/dcf/_single_producer_consumer_8h_source.xhtml#l00221">DataStructures::SingleProducerConsumer< SingleProducerConsumerType >::Clear()</a>, and <a class="el" href="../../d0/dcf/_single_producer_consumer_8h_source.xhtml#l00105">DataStructures::SingleProducerConsumer< SingleProducerConsumerType >::SingleProducerConsumer()</a>.</p>
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||||
<a href="../../d0/dcf/_single_producer_consumer_8h.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
|
||||
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Original work: Copyright (c) 2014, Oculus VR, Inc.</span></div>
|
||||
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
|
||||
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
|
||||
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This source code is licensed under the BSD-style license found in the</span></div>
|
||||
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * RakNet License.txt file in the licenses directory of this source tree. An additional grant </span></div>
|
||||
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of patent rights can be found in the RakNet Patents.txt file in the same directory.</span></div>
|
||||
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
|
||||
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
|
||||
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Modified work: Copyright (c) 2017, SLikeSoft UG (haftungsbeschränkt)</span></div>
|
||||
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div>
|
||||
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * This source code was modified by SLikeSoft. Modifications are licensed under the MIT-style</span></div>
|
||||
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * license found in the license.txt file in the root directory of this source tree.</span></div>
|
||||
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> */</span></div>
|
||||
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
|
||||
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
|
||||
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
|
||||
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
|
||||
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef __SINGLE_PRODUCER_CONSUMER_H</span></div>
|
||||
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define __SINGLE_PRODUCER_CONSUMER_H</span></div>
|
||||
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div>
|
||||
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="../../dc/da7/assert_8h.xhtml">assert.h</a>"</span></div>
|
||||
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
|
||||
<div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e"> 27</a></span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e">MINIMUM_LIST_SIZE</a>=8;</div>
|
||||
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
|
||||
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="../../dd/dc5/memoryoverride_8h.xhtml" title="If _USE_RAK_MEMORY_OVERRIDE is defined, memory allocations go through rakMalloc, rakRealloc, and rakFree.">memoryoverride.h</a>"</span></div>
|
||||
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="../../db/dbd/_export_8h.xhtml">Export.h</a>"</span></div>
|
||||
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
|
||||
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">namespace </span>DataStructures</div>
|
||||
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div>
|
||||
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00038"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml"> 38</a></span>  <span class="keyword">class </span><a class="code" href="../../db/dbd/_export_8h.xhtml#ab0579394e418800d5c85e46ad6fcd61d">RAK_DLL_EXPORT</a> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml" title="A single producer consumer implementation without critical sections.">SingleProducerConsumer</a></div>
|
||||
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  {</div>
|
||||
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">public</span>:</div>
|
||||
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// Constructor</span></div>
|
||||
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml" title="A single producer consumer implementation without critical sections.">SingleProducerConsumer</a>();</div>
|
||||
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
|
||||
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// Destructor</span></div>
|
||||
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  ~<a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml" title="A single producer consumer implementation without critical sections.">SingleProducerConsumer</a>();</div>
|
||||
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
|
||||
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  SingleProducerConsumerType* WriteLock(<span class="keywordtype">void</span>);</div>
|
||||
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
|
||||
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">void</span> CancelWriteLock(SingleProducerConsumerType* cancelToLocation);</div>
|
||||
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
|
||||
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">void</span> WriteUnlock(<span class="keywordtype">void</span>);</div>
|
||||
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
|
||||
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  SingleProducerConsumerType* ReadLock(<span class="keywordtype">void</span>);</div>
|
||||
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
|
||||
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// Cancelling locks cancels all locks back up to the data passed. So if you lock twice and cancel using the first lock, the second lock is ignored</span></div>
|
||||
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span> <span class="keywordtype">void</span> CancelReadLock(SingleProducerConsumerType* cancelToLocation);</div>
|
||||
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
|
||||
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">void</span> ReadUnlock(<span class="keywordtype">void</span>);</div>
|
||||
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
|
||||
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordtype">void</span> Clear(<span class="keywordtype">void</span>);</div>
|
||||
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
|
||||
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">int</span> Size(<span class="keywordtype">void</span>) <span class="keyword">const</span>;</div>
|
||||
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
|
||||
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">bool</span> CheckReadUnlockOrder(<span class="keyword">const</span> SingleProducerConsumerType* data) <span class="keyword">const</span>;</div>
|
||||
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
|
||||
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">bool</span> ReadIsLocked(<span class="keywordtype">void</span>) <span class="keyword">const</span>;</div>
|
||||
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
|
||||
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">private</span>:</div>
|
||||
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">struct </span>DataPlusPtr</div>
|
||||
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {</div>
|
||||
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  DataPlusPtr () {readyToRead=<span class="keyword">false</span>;}</div>
|
||||
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  SingleProducerConsumerType object;</div>
|
||||
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
|
||||
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// Ready to read is so we can use an equality boolean comparison, in case the writePointer var is trashed while context switching.</span></div>
|
||||
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">volatile</span> <span class="keywordtype">bool</span> readyToRead;</div>
|
||||
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">volatile</span> DataPlusPtr *next;</div>
|
||||
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  };</div>
|
||||
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">volatile</span> DataPlusPtr *readAheadPointer;</div>
|
||||
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">volatile</span> DataPlusPtr *writeAheadPointer;</div>
|
||||
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">volatile</span> DataPlusPtr *readPointer;</div>
|
||||
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">volatile</span> DataPlusPtr *writePointer;</div>
|
||||
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">unsigned</span> readCount, writeCount;</div>
|
||||
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  };</div>
|
||||
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
|
||||
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00105"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a8578428cea9d8a665dc56dcbde1c6d54"> 105</a></span>  <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a8578428cea9d8a665dc56dcbde1c6d54">SingleProducerConsumer<SingleProducerConsumerType>::SingleProducerConsumer</a>()</div>
|
||||
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div>
|
||||
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Preallocate</span></div>
|
||||
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  readPointer = SLNet::OP_NEW<DataPlusPtr>( <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a> );</div>
|
||||
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  writePointer=readPointer;</div>
|
||||
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  readPointer->next = SLNet::OP_NEW<DataPlusPtr>( <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a> );</div>
|
||||
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">int</span> listSize;</div>
|
||||
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#ifdef _DEBUG</span></div>
|
||||
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor"></span> <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(<a class="code" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e">MINIMUM_LIST_SIZE</a>>=3);</div>
|
||||
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#endif</span></div>
|
||||
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor"></span> <span class="keywordflow">for</span> (listSize=2; listSize < <a class="code" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e">MINIMUM_LIST_SIZE</a>; listSize++)</div>
|
||||
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  {</div>
|
||||
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  readPointer=readPointer->next;</div>
|
||||
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  readPointer->next = SLNet::OP_NEW<DataPlusPtr>( <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a> );</div>
|
||||
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
|
||||
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  readPointer->next->next=writePointer; <span class="comment">// last to next = start</span></div>
|
||||
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  readPointer=writePointer;</div>
|
||||
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  readAheadPointer=readPointer;</div>
|
||||
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  writeAheadPointer=writePointer;</div>
|
||||
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  readCount=writeCount=0;</div>
|
||||
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
|
||||
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
|
||||
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00128"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a5d2dc9fd783c1c162555631f559cdf41"> 128</a></span>  <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a5d2dc9fd783c1c162555631f559cdf41">SingleProducerConsumer<SingleProducerConsumerType>::~SingleProducerConsumer</a>()</div>
|
||||
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div>
|
||||
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">volatile</span> DataPlusPtr *next;</div>
|
||||
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  readPointer=writeAheadPointer->next;</div>
|
||||
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">while</span> (readPointer!=writeAheadPointer)</div>
|
||||
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {</div>
|
||||
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  next=readPointer->next;</div>
|
||||
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="../../dd/d30/namespace_s_l_net.xhtml#a79772d09451f784e87bec85694fad1ed">SLNet::OP_DELETE</a>((<span class="keywordtype">char</span>*) readPointer, <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a>);</div>
|
||||
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  readPointer=next;</div>
|
||||
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
|
||||
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="../../dd/d30/namespace_s_l_net.xhtml#a79772d09451f784e87bec85694fad1ed">SLNet::OP_DELETE</a>((<span class="keywordtype">char</span>*) readPointer, <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a>);</div>
|
||||
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
|
||||
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
|
||||
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00142"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a875f6c2177c1ab29106472162b75c038"> 142</a></span>  SingleProducerConsumerType* <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a875f6c2177c1ab29106472162b75c038">SingleProducerConsumer<SingleProducerConsumerType>::WriteLock</a>( <span class="keywordtype">void</span> )</div>
|
||||
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  {</div>
|
||||
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (writeAheadPointer->next==readPointer ||</div>
|
||||
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  writeAheadPointer->next->readyToRead==<span class="keyword">true</span>)</div>
|
||||
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  {</div>
|
||||
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">volatile</span> DataPlusPtr *originalNext=writeAheadPointer->next;</div>
|
||||
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  writeAheadPointer->next= SLNet::OP_NEW<DataPlusPtr>(<a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a>);</div>
|
||||
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(writeAheadPointer->next);</div>
|
||||
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  writeAheadPointer->next->next=originalNext;</div>
|
||||
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</div>
|
||||
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
|
||||
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">volatile</span> DataPlusPtr *last;</div>
|
||||
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  last=writeAheadPointer;</div>
|
||||
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  writeAheadPointer=writeAheadPointer->next;</div>
|
||||
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
|
||||
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> (SingleProducerConsumerType*) last;</div>
|
||||
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
|
||||
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
|
||||
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00161"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#adde3995822744b048b9e1df7a8bb02ff"> 161</a></span>  <span class="keywordtype">void</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#adde3995822744b048b9e1df7a8bb02ff">SingleProducerConsumer<SingleProducerConsumerType>::CancelWriteLock</a>( SingleProducerConsumerType* cancelToLocation )</div>
|
||||
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div>
|
||||
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  writeAheadPointer=(DataPlusPtr *)cancelToLocation;</div>
|
||||
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div>
|
||||
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
|
||||
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00167"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a2c5554a0297476b8f69e39b2721e1e23"> 167</a></span>  <span class="keywordtype">void</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a2c5554a0297476b8f69e39b2721e1e23" title="Call when you are done writing to a block of memory returned by WriteLock()">SingleProducerConsumer<SingleProducerConsumerType>::WriteUnlock</a>( <span class="keywordtype">void</span> )</div>
|
||||
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {</div>
|
||||
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// DataPlusPtr *dataContainer = (DataPlusPtr *)structure;</span></div>
|
||||
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
|
||||
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#ifdef _DEBUG</span></div>
|
||||
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"></span> <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(writePointer->next!=readPointer);</div>
|
||||
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(writePointer!=writeAheadPointer);</div>
|
||||
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor">#endif</span></div>
|
||||
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor"></span></div>
|
||||
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  writeCount++;</div>
|
||||
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// User is done with the data, allow send by updating the write pointer</span></div>
|
||||
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  writePointer->readyToRead=<span class="keyword">true</span>;</div>
|
||||
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  writePointer=writePointer->next;</div>
|
||||
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div>
|
||||
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
|
||||
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00183"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a114026663fff4b0b5dac65f7b6b742c8"> 183</a></span>  SingleProducerConsumerType* <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a114026663fff4b0b5dac65f7b6b742c8">SingleProducerConsumer<SingleProducerConsumerType>::ReadLock</a>( <span class="keywordtype">void</span> )</div>
|
||||
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  {</div>
|
||||
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (readAheadPointer==writePointer ||</div>
|
||||
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  readAheadPointer->readyToRead==<span class="keyword">false</span>)</div>
|
||||
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  {</div>
|
||||
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> 0;</div>
|
||||
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div>
|
||||
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
|
||||
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">volatile</span> DataPlusPtr *last;</div>
|
||||
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  last=readAheadPointer;</div>
|
||||
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  readAheadPointer=readAheadPointer->next;</div>
|
||||
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">return</span> (SingleProducerConsumerType*)last;</div>
|
||||
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
|
||||
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
|
||||
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00198"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#aa08c579304d9a91f96a4e285324864eb"> 198</a></span>  <span class="keywordtype">void</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#aa08c579304d9a91f96a4e285324864eb" title="param[in] Which ReadLock() to cancel.">SingleProducerConsumer<SingleProducerConsumerType>::CancelReadLock</a>( SingleProducerConsumerType* cancelToLocation )</div>
|
||||
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {</div>
|
||||
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor">#ifdef _DEBUG</span></div>
|
||||
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"></span> <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(readPointer!=writePointer);</div>
|
||||
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor">#endif</span></div>
|
||||
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor"></span> readAheadPointer=(DataPlusPtr *)cancelToLocation;</div>
|
||||
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  }</div>
|
||||
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
|
||||
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00207"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ab0440d6f877601c03b75deb1edbc94f6"> 207</a></span>  <span class="keywordtype">void</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ab0440d6f877601c03b75deb1edbc94f6">SingleProducerConsumer<SingleProducerConsumerType>::ReadUnlock</a>( <span class="keywordtype">void</span> )</div>
|
||||
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div>
|
||||
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="preprocessor">#ifdef _DEBUG</span></div>
|
||||
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor"></span> <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(readAheadPointer!=readPointer); <span class="comment">// If hits, then called ReadUnlock before ReadLock</span></div>
|
||||
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(readPointer!=writePointer); <span class="comment">// If hits, then called ReadUnlock when Read returns 0</span></div>
|
||||
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor">#endif</span></div>
|
||||
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor"></span> readCount++;</div>
|
||||
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
|
||||
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="comment">// Allow writes to this memory block</span></div>
|
||||
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  readPointer->readyToRead=<span class="keyword">false</span>;</div>
|
||||
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  readPointer=readPointer->next;</div>
|
||||
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div>
|
||||
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
|
||||
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00221"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a78853698d03871f26074d1b13a2772a8"> 221</a></span>  <span class="keywordtype">void</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a78853698d03871f26074d1b13a2772a8" title="Clear is not thread-safe and none of the lock or unlock functions should be called while it is runnin...">SingleProducerConsumer<SingleProducerConsumerType>::Clear</a>( <span class="keywordtype">void</span> )</div>
|
||||
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  {</div>
|
||||
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="comment">// Shrink the list down to MINIMUM_LIST_SIZE elements</span></div>
|
||||
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keyword">volatile</span> DataPlusPtr *next;</div>
|
||||
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  writePointer=readPointer->next;</div>
|
||||
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
|
||||
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">int</span> listSize=1;</div>
|
||||
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  next=readPointer->next;</div>
|
||||
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">while</span> (next!=readPointer)</div>
|
||||
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  {</div>
|
||||
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  listSize++;</div>
|
||||
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  next=next->next;</div>
|
||||
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div>
|
||||
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
|
||||
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">while</span> (listSize-- > <a class="code" href="../../d0/dcf/_single_producer_consumer_8h.xhtml#a8fae0ac5ca81babf9c401d698fb1dc8e">MINIMUM_LIST_SIZE</a>)</div>
|
||||
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  {</div>
|
||||
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  next=writePointer->next;</div>
|
||||
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor">#ifdef _DEBUG</span></div>
|
||||
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor"></span> <a class="code" href="../../d8/db0/defines_8h.xhtml#afaa3647d29f5960651eb23fd3d2b5368">RakAssert</a>(writePointer!=readPointer);</div>
|
||||
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor">#endif</span></div>
|
||||
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="preprocessor"></span> <a class="code" href="../../dd/d30/namespace_s_l_net.xhtml#a79772d09451f784e87bec85694fad1ed">SLNet::OP_DELETE</a>((<span class="keywordtype">char</span>*) writePointer, <a class="code" href="../../d8/db0/defines_8h.xhtml#a8661ec2137eef33a8cd0cd618a748871">_FILE_AND_LINE_</a>);</div>
|
||||
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  writePointer=next;</div>
|
||||
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
|
||||
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div>
|
||||
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  readPointer->next=writePointer;</div>
|
||||
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  writePointer=readPointer;</div>
|
||||
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  readAheadPointer=readPointer;</div>
|
||||
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  writeAheadPointer=writePointer;</div>
|
||||
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  readCount=writeCount=0;</div>
|
||||
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  }</div>
|
||||
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
|
||||
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00253"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a4109a63f86171ccd3461082108f6febf"> 253</a></span>  <span class="keywordtype">int</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#a4109a63f86171ccd3461082108f6febf">SingleProducerConsumer<SingleProducerConsumerType>::Size</a>( <span class="keywordtype">void</span> )<span class="keyword"> const</span></div>
|
||||
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="keyword"> </span>{</div>
|
||||
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> writeCount-readCount;</div>
|
||||
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div>
|
||||
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
|
||||
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00259"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ab2d92e6bb0d68b8a1974cfd9eac90ed8"> 259</a></span>  <span class="keywordtype">bool</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ab2d92e6bb0d68b8a1974cfd9eac90ed8">SingleProducerConsumer<SingleProducerConsumerType>::CheckReadUnlockOrder</a>(<span class="keyword">const</span> SingleProducerConsumerType* data)<span class="keyword"> const</span></div>
|
||||
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="keyword"> </span>{</div>
|
||||
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">return</span> <span class="keyword">const_cast<</span><span class="keyword">const </span>SingleProducerConsumerType *<span class="keyword">></span>(&readPointer->object) == data;</div>
|
||||
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  }</div>
|
||||
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div>
|
||||
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div>
|
||||
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">template</span> <<span class="keyword">class</span> SingleProducerConsumerType></div>
|
||||
<div class="line"><a name="l00266"></a><span class="lineno"><a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ad96259b75b794e8451ec29a40018f19d"> 266</a></span>  <span class="keywordtype">bool</span> <a class="code" href="../../d0/d72/class_data_structures_1_1_single_producer_consumer.xhtml#ad96259b75b794e8451ec29a40018f19d">SingleProducerConsumer<SingleProducerConsumerType>::ReadIsLocked</a>(<span class="keywordtype">void</span>)<span class="keyword"> const</span></div>
|
||||
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keyword"> </span>{</div>
|
||||
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> readAheadPointer!=readPointer;</div>
|
||||
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  } </div>
|
||||
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> }</div>
|
||||
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
|
||||
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor">#endif</span></div>
|
||||
</div><!-- fragment --></div><!-- contents -->
|
||||
</div><!-- doc-content -->
|
||||
<!-- start footer part -->
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Reference in New Issue
Block a user