void DoMainLoop()
{
const std::chrono::milliseconds FRAME_PERIOD(16);
SDL_Event event;
CChronometer chronometer;
while (true)
{
while (SDL_PollEvent(&event) != 0)
{
if (!ConsumeEvent(event) && m_pClient)
{
DispatchEvent(event, *m_pClient);
}
}
if (m_isTerminated)
{
break;
}
// Очистка буфера кадра, обновление и рисование сцены, вывод буфера кадра.
Clear();
if (m_pClient)
{
const float deltaSeconds = chronometer.GrabDeltaTime();
m_pClient->OnUpdateWindow(deltaSeconds);
}
CUtils::ValidateOpenGLErrors();
SwapBuffers();
chronometer.WaitNextFrameTime(FRAME_PERIOD);
}
}
bool ProcessEvent(Event* event){
if (current_state_ == 0) {
return false;
}
// ConsumeEvent may change the next_state_
if (!ConsumeEvent(event)) {
return false;
}
if (next_state_) {
EnterNextState();
}
return true;
}
// simplest of all tests. Just set a file descriptor and see that it's available
// repeat many times
HRESULT CTestPolling::Test1()
{
HRESULT hr = S_OK;
HRESULT hrResult;
size_t size;
PollEvent event;
int fd;
int count = 0;
srand(100);
ChkA(TestInit(10, 10));
size = _pipes.size();
hrResult = _spPolling->WaitForNextEvent(&event, 0);
ChkIfA(hrResult != S_FALSE, E_UNEXPECTED);
// one event at a time model
for (int index = 0; index < 100; index++)
{
size_t item = rand() % size;
ChkA(WritePipe(&_pipes[item]));
ConsumeEvent(&fd, &count);
ChkIfA(fd != _pipes[item].readpipe, E_UNEXPECTED);
ChkIfA(count != 1, E_UNEXPECTED);
}
hrResult = _spPolling->WaitForNextEvent(&event, 0);
ChkIfA(hrResult != S_FALSE, E_UNEXPECTED);
Cleanup:
return hr;
}
// create a polling set
HRESULT CTestPolling::Test2()
{
// simulate the following events in random order:
// socket added (did it succeed as expected)
// incoming data (write to a random pipe)
// WaitForNextEvent called (did it return an expected result/socket)
// Remove socket last notified about
HRESULT hr = S_OK;
HRESULT hrResult;
PollEvent event;
const size_t c_maxSockets = 10;
srand(100);
ChkA(TestInit(c_maxSockets, 0));
hrResult = _spPolling->WaitForNextEvent(&event, 0);
ChkIfA(hrResult != S_FALSE, E_UNEXPECTED);
for (size_t index = 0; index < 1000; index++)
{
int randresult = ::rand() % 4;
switch (randresult)
{
case 0:
{
// simulate a new socket being added
if (_pipes.size() >= c_maxSockets)
{
continue;
}
ChkA(CreateAndAddPipe());
break;
}
case 1:
{
// simulate incoming data
size_t size = _pipes.size();
size_t itemindex;
if (size == 0)
{
continue;
}
itemindex = rand() % size;
ChkA(WritePipe(&_pipes[itemindex]));
break;
}
case 2:
case 3:
{
int fd;
size_t pending = GetPendingCount();
if (pending == 0)
{
continue;
}
ChkA(ConsumeEvent(&fd, NULL));
if (randresult == 3)
{
// simulate removing this pipe from the set
ChkA(RemovePipe(FindPipePairIndex(fd)));
}
break;
} // case
} // switch
} // for
Cleanup:
return hr;
}
