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<a href="pollset_8h.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"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright 2015, Google Inc.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</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"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * met:</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"> * * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * in the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * distribution.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * this software without specific prior written permission.</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"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_H</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_H</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="port__platform_8h.html">grpc/support/port_platform.h</a>></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="time_8h.html">grpc/support/time.h</a>></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="pollset_8h.html#ac899c23ff0955a9154bcaa5d09260764"> 40</a></span> <span class="preprocessor">#define GRPC_POLLSET_KICK_BROADCAST ((grpc_pollset_worker *)1)</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">/* A grpc_pollset is a set of file descriptors that a higher level item is</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> interested in. For example:</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> - a server will typically keep a pollset containing all connected channels,</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> so that it can find new calls to service</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> - a completion queue might keep a pollset with an entry for each transport</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> that is servicing a call that it's tracking */</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> <span class="preprocessor">#ifdef GPR_POSIX_SOCKET</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="pollset__posix_8h.html">src/core/iomgr/pollset_posix.h</a>"</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#ifdef GPR_WIN32</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="pollset__windows_8h.html">src/core/iomgr/pollset_windows.h</a>"</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keywordtype">void</span> <a class="code" href="pollset_8h.html#abea9f486d280910a6e6aecbe6ca5f40b">grpc_pollset_init</a>(<a class="code" href="structgrpc__pollset.html">grpc_pollset</a> *pollset);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">void</span> <a class="code" href="pollset_8h.html#a85616767facacdf95dfc4fe564352e87">grpc_pollset_shutdown</a>(<a class="code" href="structgrpc__pollset.html">grpc_pollset</a> *pollset,</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">void</span> (*shutdown_done)(<span class="keywordtype">void</span> *<a class="code" href="structarg.html">arg</a>),</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">void</span> *shutdown_done_arg);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">void</span> <a class="code" href="pollset_8h.html#a66c5028ee13b23f2d3c4db177f5c7d0f">grpc_pollset_destroy</a>(<a class="code" href="structgrpc__pollset.html">grpc_pollset</a> *pollset);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">/* Do some work on a pollset.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> May involve invoking asynchronous callbacks, or actually polling file</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> descriptors.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> Requires GRPC_POLLSET_MU(pollset) locked.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> May unlock GRPC_POLLSET_MU(pollset) during its execution.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> worker is a (platform-specific) handle that can be used to wake up</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> from grpc_pollset_work before any events are received and before the timeout</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> has expired. It is both initialized and destroyed by grpc_pollset_work.</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> Initialization of worker is guaranteed to occur BEFORE the</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> GRPC_POLLSET_MU(pollset) is released for the first time by</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> grpc_pollset_work, and it is guaranteed that GRPC_POLLSET_MU(pollset) will</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> not be released by grpc_pollset_work AFTER worker has been destroyed.</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"></span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> Tries not to block past deadline. */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">void</span> <a class="code" href="pollset_8h.html#acb517fea22ab6637eff19ede002b13b0">grpc_pollset_work</a>(<a class="code" href="structgrpc__pollset.html">grpc_pollset</a> *pollset, <a class="code" href="structgrpc__pollset__worker.html">grpc_pollset_worker</a> *worker,</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="structgpr__timespec.html">gpr_timespec</a> now, <a class="code" href="structgpr__timespec.html">gpr_timespec</a> deadline);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">/* Break one polling thread out of polling work for this pollset.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> If specific_worker is GRPC_POLLSET_KICK_BROADCAST, kick ALL the workers.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> Otherwise, if specific_worker is non-NULL, then kick that worker. */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keywordtype">void</span> <a class="code" href="pollset_8h.html#a944364dff517de15717cac25ed3d46e6">grpc_pollset_kick</a>(<a class="code" href="structgrpc__pollset.html">grpc_pollset</a> *pollset,</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="structgrpc__pollset__worker.html">grpc_pollset_worker</a> *specific_worker);</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="preprocessor">#endif </span><span class="comment">/* GRPC_INTERNAL_CORE_IOMGR_POLLSET_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="port__platform_8h_html"><div class="ttname"><a href="port__platform_8h.html">port_platform.h</a></div></div>
<div class="ttc" id="time_8h_html"><div class="ttname"><a href="time_8h.html">time.h</a></div></div>
<div class="ttc" id="pollset__posix_8h_html"><div class="ttname"><a href="pollset__posix_8h.html">pollset_posix.h</a></div></div>
<div class="ttc" id="structarg_html"><div class="ttname"><a href="structarg.html">arg</a></div><div class="ttdef"><b>Definition:</b> cmdline.c:47</div></div>
<div class="ttc" id="structgrpc__pollset_html"><div class="ttname"><a href="structgrpc__pollset.html">grpc_pollset</a></div><div class="ttdef"><b>Definition:</b> pollset_posix.h:55</div></div>
<div class="ttc" id="pollset_8h_html_a944364dff517de15717cac25ed3d46e6"><div class="ttname"><a href="pollset_8h.html#a944364dff517de15717cac25ed3d46e6">grpc_pollset_kick</a></div><div class="ttdeci">void grpc_pollset_kick(grpc_pollset *pollset, grpc_pollset_worker *specific_worker)</div></div>
<div class="ttc" id="pollset_8h_html_abea9f486d280910a6e6aecbe6ca5f40b"><div class="ttname"><a href="pollset_8h.html#abea9f486d280910a6e6aecbe6ca5f40b">grpc_pollset_init</a></div><div class="ttdeci">void grpc_pollset_init(grpc_pollset *pollset)</div></div>
<div class="ttc" id="pollset_8h_html_a66c5028ee13b23f2d3c4db177f5c7d0f"><div class="ttname"><a href="pollset_8h.html#a66c5028ee13b23f2d3c4db177f5c7d0f">grpc_pollset_destroy</a></div><div class="ttdeci">void grpc_pollset_destroy(grpc_pollset *pollset)</div></div>
<div class="ttc" id="pollset_8h_html_acb517fea22ab6637eff19ede002b13b0"><div class="ttname"><a href="pollset_8h.html#acb517fea22ab6637eff19ede002b13b0">grpc_pollset_work</a></div><div class="ttdeci">void grpc_pollset_work(grpc_pollset *pollset, grpc_pollset_worker *worker, gpr_timespec now, gpr_timespec deadline)</div></div>
<div class="ttc" id="pollset_8h_html_a85616767facacdf95dfc4fe564352e87"><div class="ttname"><a href="pollset_8h.html#a85616767facacdf95dfc4fe564352e87">grpc_pollset_shutdown</a></div><div class="ttdeci">void grpc_pollset_shutdown(grpc_pollset *pollset, void(*shutdown_done)(void *arg), void *shutdown_done_arg)</div></div>
<div class="ttc" id="structgpr__timespec_html"><div class="ttname"><a href="structgpr__timespec.html">gpr_timespec</a></div><div class="ttdef"><b>Definition:</b> time.h:63</div></div>
<div class="ttc" id="structgrpc__pollset__worker_html"><div class="ttname"><a href="structgrpc__pollset__worker.html">grpc_pollset_worker</a></div><div class="ttdef"><b>Definition:</b> pollset_posix.h:49</div></div>
<div class="ttc" id="pollset__windows_8h_html"><div class="ttname"><a href="pollset__windows_8h.html">pollset_windows.h</a></div></div>
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