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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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 <span id="projectnumber">1.4.0</span>
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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_ef68f1e1f5148ff8ef7fb1c955106c3c.html">System</a></li><li class="navelem"><a class="el" href="dir_cff4904a42bcbaf87c4eaccffda69e89.html">Threads</a></li> </ul>
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<div class="title">Condition.hxx</div> </div>
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<a href="Condition_8hxx.html">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"> * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * UNIVERSITAT POMPEU FABRA</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"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</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 __CONDITION__</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define __CONDITION__</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="ErrSystem_8hxx.html">ErrSystem.hxx</a>"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="Lock_8hxx.html">Lock.hxx</a>"</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <pthread.h></span></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="keyword">namespace </span>CLAM</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">struct </span>xtime;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="code" href="classCLAM_1_1Condition.html"> 34</a></span>  <span class="keyword">class </span><a class="code" href="classCLAM_1_1Condition.html">Condition</a></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="classCLAM_1_1Condition.html#a117bc4a559678a5b737ba3ae886e3c37">Condition</a>();</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classCLAM_1_1Condition.html#a01c975ef85b6d6bdc57f3b02715120e8">~Condition</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="keywordtype">void</span> <a class="code" href="classCLAM_1_1Condition.html#afc2c065f42646d80a5614d317e712faa">NotifyOne</a>();</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1Condition.html#afcb8ae2c514d7620877c9270c2e0854b">NotifyAll</a>();</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="classCLAM_1_1Condition.html#ad06aea2e2eb62d0d93ff985cd0576eff"> 44</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1Condition.html#ad06aea2e2eb62d0d93ff985cd0576eff">Wait</a>( <a class="code" href="LibXmlEncodings_8hxx.html#a16da33c4777d0dc8de955b3e28b483eb">L</a>& lock )</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> ( !lock )</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">throw</span> <a class="code" href="classCLAM_1_1LockError.html">LockError</a>(<span class="stringliteral">"Invalid lock"</span>);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  DoWait( lock.mMutex );</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L, <span class="keyword">typename</span> Pr ></div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="code" href="classCLAM_1_1Condition.html#a0612638cf839babf96cde39bac27dbb7"> 53</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1Condition.html#ad06aea2e2eb62d0d93ff985cd0576eff">Wait</a>( <a class="code" href="LibXmlEncodings_8hxx.html#a16da33c4777d0dc8de955b3e28b483eb">L</a>& lock, Pr predicate )</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> ( !lock )</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">throw</span> <a class="code" href="classCLAM_1_1LockError.html">LockError</a>(<span class="stringliteral">"Invalid lock"</span>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">while</span> ( !predicate() )</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  DoWait( lock.mMutex );</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="code" href="classCLAM_1_1Condition.html#a0b09ac95e4a7c3493909c21fe19fe691"> 63</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1Condition.html#a0b09ac95e4a7c3493909c21fe19fe691">TimedWait</a>( <a class="code" href="LibXmlEncodings_8hxx.html#a16da33c4777d0dc8de955b3e28b483eb">L</a>& lock, <span class="keyword">const</span> <a class="code" href="structCLAM_1_1xtime.html">xtime</a>& xt )</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (!lock )</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">throw</span> <a class="code" href="classCLAM_1_1LockError.html">LockError</a>();</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> DoTimedWait( lock.mMutex, xt );</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L, <span class="keyword">typename</span> Pr></div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="classCLAM_1_1Condition.html#a9207f03522fe561f77ef218653fec699"> 72</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1Condition.html#a0b09ac95e4a7c3493909c21fe19fe691">TimedWait</a>( <a class="code" href="LibXmlEncodings_8hxx.html#a16da33c4777d0dc8de955b3e28b483eb">L</a>& lock, <span class="keyword">const</span> <a class="code" href="structCLAM_1_1xtime.html">xtime</a>& xt, Pr predicate )</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">if</span> ( !lock )</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">throw</span> <a class="code" href="classCLAM_1_1LockError.html">LockError</a>();</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">while</span>( !predicate() )</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (!DoTimedWait( lock.mMutex, xt ) )</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> M></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">void</span> DoWait( M& mutex )</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classCLAM_1_1Hidden_1_1LockOps.html">Hidden::LockOps<M></a> LockOps;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">typename</span> LockOps::LockState state;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  LockOps::Unlock( mutex, state );</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  DoWait( state.pmutex );</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  LockOps::Lock( mutex, state );</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> M></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">bool</span> DoTimedWait( M& mutex, <span class="keyword">const</span> xtime& xt )</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Hidden::LockOps<M> LockOps;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">typename</span> LockOps::LockState state;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  LockOps::Unlock( mutex, state );</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="keywordtype">bool</span> ret = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  ret = DoTimedWait( xt, state.pmutex );</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  LockOps::Lock( mutex, state );</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">void</span> DoWait( pthread_mutex_t* pMutex );</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">bool</span> DoTimedWait( <span class="keyword">const</span> xtime& xt, pthread_mutex_t* pMutex);</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>  pthread_cond_t mCondition;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  };</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> } <span class="comment">// end of namespace CLAM</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor">#endif // Condition.hxx</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor"></span></div>
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