PLearn 0.1
|
00001 // -*- C++ -*- 00002 00003 // Poll.h 00004 // 00005 // Copyright (C) 2005 Christian Hudon 00006 // Copyright (C) 2007 Xavier Saint-Mleux, ApSTAT Technologies inc. 00007 // 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are met: 00010 // 00011 // 1. Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // 00014 // 2. Redistributions in binary form must reproduce the above copyright 00015 // notice, this list of conditions and the following disclaimer in the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 /* ******************************************************* 00037 * $Id: Poll.h 8837 2008-04-19 01:25:41Z lamblin $ 00038 ******************************************************* */ 00039 00040 // Authors: Christian Hudon 00041 00045 #ifndef Poll_INC 00046 #define Poll_INC 00047 00048 #include <vector> 00049 #include <nspr/prio.h> 00050 #include <plearn/io/PStream.h> 00051 #include <plearn/math/TVec.h> 00052 00053 namespace PLearn { 00054 using namespace std; 00055 00056 00060 class Poll { 00061 00062 public: 00063 void setStreamsToWatch(const vector<PStream>& streams); 00064 00065 int waitForEvents(uint32_t timeout = 0, bool shuffle_events_= false); 00066 00067 PStream getNextPendingEvent(); 00068 00069 protected: 00071 vector<PStream> m_streams_to_watch; 00072 00075 vector<PRPollDesc> m_poll_descriptors; 00076 00079 unsigned int m_next_unexamined_event; 00080 00081 int last_n_poll_events; //nb. events for the last PR_Poll; indicates wether out_flags s/b used. 00082 bool shuffle_events; 00083 TVec<int> shuffled_index; 00084 }; 00085 00086 } // end of namespace PLearn 00087 00088 #endif 00089 00090 00091 /* 00092 Local Variables: 00093 mode:c++ 00094 c-basic-offset:4 00095 c-file-style:"stroustrup" 00096 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00097 indent-tabs-mode:nil 00098 fill-column:79 00099 End: 00100 */ 00101 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :