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// Event.cpp
// Interfaces to the cEvent object representing a synchronization primitive that can be waited-for
// Implemented using C++11 condition variable and mutex
#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "Event.h"
#include "Errors.h"
cEvent::cEvent(void) :
m_ShouldContinue(false)
{
}
void cEvent::Wait(void)
{
{
std::unique_lock<std::mutex> Lock(m_Mutex);
m_CondVar.wait(Lock, [this](){ return m_ShouldContinue; });
m_ShouldContinue = false;
}
}
bool cEvent::Wait(unsigned a_TimeoutMSec)
{
auto dst = std::chrono::system_clock::now() + std::chrono::milliseconds(a_TimeoutMSec);
bool Result;
{
std::unique_lock<std::mutex> Lock(m_Mutex); // We assume that this lock is acquired without much delay - we are the only user of the mutex
Result = m_CondVar.wait_until(Lock, dst, [this](){ return m_ShouldContinue; });
m_ShouldContinue = false;
}
return Result;
}
void cEvent::Set(void)
{
{
std::unique_lock<std::mutex> Lock(m_Mutex);
m_ShouldContinue = true;
}
m_CondVar.notify_one();
}
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