automated-tests/src/dali-toolkit/dali-toolkit-test-utils/toolkit-event-thread-callback.cpp

   1 /*
   2  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 // CLASS HEADER
  18 #include "toolkit-event-thread-callback.h"
  19
  20 // EXTERNAL INCLUDES
  21 #include <math.h>
  22 #include <semaphore.h>
  23 #include <unistd.h>
  24 #include <algorithm>
  25 #include <climits>
  26 #include <cstddef>
  27 #include <cstdio>
  28 #include <ctime>
  29 #include <vector>
  30
  31 namespace
  32 {
  33 // Note, this is not thread safe - however, should not be using
  34 // triggers from multiple threads - they should all be created on
  35 // event thread.
  36 std::vector<Dali::EventThreadCallback*> gEventThreadCallbacks;
  37 } // namespace
  38
  39 namespace Dali
  40 {
  41 struct EventThreadCallback::Impl
  42 {
  43   CallbackBase* callback;
  44   sem_t         mySemaphore;
  45 };
  46
  47 EventThreadCallback::EventThreadCallback(CallbackBase* callback)
  48 : mImpl(new Impl())
  49 {
  50   mImpl->callback = callback;
  51   sem_init(&(mImpl->mySemaphore), 0, 0);
  52
  53   gEventThreadCallbacks.push_back(this);
  54 }
  55
  56 EventThreadCallback::~EventThreadCallback()
  57 {
  58   std::vector<EventThreadCallback*>::iterator iter =
  59     std::find(gEventThreadCallbacks.begin(), gEventThreadCallbacks.end(), this);
  60   if(iter != gEventThreadCallbacks.end())
  61   {
  62     gEventThreadCallbacks.erase(iter);
  63   }
  64   delete mImpl;
  65 }
  66
  67 void EventThreadCallback::Trigger()
  68 {
  69   sem_post(&(mImpl->mySemaphore));
  70 }
  71
  72 // returns true if timed out rather than triggered
  73 bool EventThreadCallback::WaitingForTrigger()
  74 {
  75   struct timespec now;
  76   clock_gettime(CLOCK_REALTIME, &now);
  77   if(now.tv_nsec < 999900000) // 999, 900, 000
  78     now.tv_nsec += 1000;
  79   else
  80   {
  81     now.tv_sec += 1;
  82     now.tv_nsec = 0;
  83   }
  84
  85   int error = sem_timedwait(&(mImpl->mySemaphore), &now);
  86   return error != 0; // true if timeout
  87 }
  88
  89 CallbackBase* EventThreadCallback::GetCallback()
  90 {
  91   return mImpl->callback;
  92 }
  93
  94 } // namespace Dali
  95
  96 namespace Test
  97 {
  98 bool WaitForEventThreadTrigger(int triggerCount, int timeoutInSeconds, int executeCallbacks)
  99 {
 100   struct timespec startTime;
 101   struct timespec now;
 102   clock_gettime(CLOCK_REALTIME, &startTime);
 103   now.tv_sec  = startTime.tv_sec;
 104   now.tv_nsec = startTime.tv_nsec;
 105
 106   // Round robin poll of each semaphore:
 107   while(triggerCount > 0)
 108   {
 109     if(gEventThreadCallbacks.size() > 0)
 110     {
 111       for(std::vector<Dali::EventThreadCallback*>::iterator iter = gEventThreadCallbacks.begin();
 112           iter != gEventThreadCallbacks.end();
 113           ++iter)
 114       {
 115         Dali::EventThreadCallback* eventTrigger = (*iter);
 116         Dali::CallbackBase*        callback     = eventTrigger->GetCallback();
 117         bool                       timedout     = eventTrigger->WaitingForTrigger();
 118         if(!timedout)
 119         {
 120           if(executeCallbacks)
 121           {
 122             // Semaphore was unlocked - execute the trigger
 123             Dali::CallbackBase::Execute(*callback);
 124           }
 125           triggerCount--;
 126         }
 127         if(triggerCount <= 0)
 128         {
 129           break;
 130         }
 131       }
 132     }
 133     clock_gettime(CLOCK_REALTIME, &now);
 134     if(now.tv_sec - startTime.tv_sec > timeoutInSeconds)
 135     {
 136       // Ensure we break out of the loop if elapsed time has passed
 137       break;
 138     }
 139   }
 140
 141   clock_gettime(CLOCK_REALTIME, &now);
 142   if(now.tv_sec > startTime.tv_sec + 1)
 143   {
 144     fprintf(stderr, "WaitForEventThreadTrigger took %ld seconds\n", now.tv_sec - startTime.tv_sec);
 145   }
 146   return triggerCount == 0;
 147 }
 148
 149 } // namespace Test