Example for boost shared_mutex (multiple reads/one write)?

Question

I have a multithreaded app that has to read some data often, and occasionally that data is updated. Right now a mutex keeps access to that data safe, but it\'s expensive bec

Answer 1

It looks like you would do something like this:

boost::shared_mutex _access;
void reader()
{
  // get shared access
  boost::shared_lock lock(_access);

  // now we have shared access
}

void writer()
{
  // get upgradable access
  boost::upgrade_lock lock(_access);

  // get exclusive access
  boost::upgrade_to_unique_lock uniqueLock(lock);
  // now we have exclusive access
}