Hey,
I am using c++11 threading libraries with visual studio 2012 ( phone and windows 8 ) editions. Ever since I installed update 3 all my programs started crashing periodically. After few hours of investigating I came to the conclusion that connect bug 762560 is
back. The forum doesn't allow me to post the actual link, but basically std::condition_variable::wait_for crashes at random moments. The following code reproduces it:
// Concurrency bug in Microsoft Visual C++ 2011
#include <mutex>
#include <thread>
#include <condition_variable>
#include <vector>
struct WaitForConditionInThreads
{
std::mutex mutex;
std::condition_variable condition;
void run(int threads)
{
std::vector<std::thread> thread_pool(threads);
for(auto & i : thread_pool)
i = std::thread(&WaitForConditionInThreads::thread_fn, this);
for(auto & i : thread_pool)
i.join();
}
void thread_fn()
{
int count=100;
std::unique_lock<std::mutex> lock(mutex);
while(count--)
condition.wait_for(lock, std::chrono::milliseconds(1));
condition.notify_one();
}
};
int main()
{
WaitForConditionInThreads w;
for(;;) w.run(16);
}
Can anyone confirm it? Also if that's the case whats the alternative? Good ol' WaitForSingleObject and similar can't be used in RT (right?) so what should I do? Revert to update 2?
Thanks.