id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11499,windows - exception lock_error while intensive locking/unlocking of shared_mutex on many threads,andrew maclean <agm@…>,viboes,"
{{{
#include ""stdafx.h""
#include <boost/thread/shared_mutex.hpp>
#include <thread>
#include <mutex>
#include <shared_mutex>
#include <atomic>
#include <vector>

using MutexT = boost::shared_mutex;
using ReaderLockT = std::lock_guard<MutexT>;
using WriterLockT = std::shared_lock<MutexT>;

MutexT gMutex;
std::atomic<bool> running = true;

long reads = 0;

void read()
{
   while (running)
   {
      ReaderLockT lock(gMutex);
      std::this_thread::yield();
      ++reads;
   }
}

int main()
{
   using namespace std;

   vector<thread> threads;
   for (int i = 0; i < 256; ++i)
   {
      threads.emplace_back(thread(read));
   }

   string str;

   getline(std::cin, str);
   running = false;

   for (auto& thread : threads)
   {
      thread.join();
   }

   return 0;
}


}}}
",Bugs,assigned,To Be Determined,thread,Boost 1.59.0,Problem,,,