src/Protection.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_PROTECTION_HPP
  25 #define XCSOAR_PROTECTION_HPP
  26
  27 #include "Thread/Mutex.hpp"
  28
  29 /**
  30  * Notify the #MergeThread that new data has arrived in the
  31  * #DeviceBlackboard.
  32  */
  33 void
  34 TriggerMergeThread();
  35
  36 void TriggerGPSUpdate();
  37
  38 /**
  39  * Force a #CalculationThread run.  This should be called when
  40  * important data has been modified, e.g. after the task has been
  41  * edited.  Even if there is no new GPS position, the task must be
  42  * recalculated.
  43  */
  44 void
  45 ForceCalculation();
  46
  47 void TriggerVarioUpdate();
  48
  49 /**
  50  * Trigger a redraw of the map window.
  51  */
  52 void
  53 TriggerMapUpdate();
  54
  55 /**
  56  * Called by the calculation thread when new calculation results are
  57  * available.  This updates the map and the info boxes.
  58  */
  59 void
  60 TriggerCalculatedUpdate();
  61
  62 /**
  63  * Called by the calculation thread when new airspace warning has been
  64  * added.  It triggers showing the airspace warning dialog.
  65  */
  66 void
  67 TriggerAirspaceWarning();
  68
  69 void CreateCalculationThread();
  70
  71 extern bool global_running;
  72
  73 /**
  74  * Suspend all threads which have unprotected access to shared data.
  75  * Call this before doing write operations on shared data.
  76  */
  77 void
  78 SuspendAllThreads();
  79
  80 /**
  81  * Resume all threads suspended by SuspendAllThreads().
  82  */
  83 void
  84 ResumeAllThreads();
  85
  86 class ScopeSuspendAllThreads {
  87 public:
  88   ScopeSuspendAllThreads() { SuspendAllThreads(); }
  89   ~ScopeSuspendAllThreads() { ResumeAllThreads(); }
  90 };
  91
  92 #endif
  93