Question

Is there any way to Lock a Method in a Multi-Thread Application ??

NB: to Access a MySQL DataBase

Best regards.

Answer 1

boost scoped_lock is an easy and fool-proof way. Having the lock tied to an object like this automatically releases the lock when for any reason the scope is left. (return, exceptions, …) Edit: Also note c++11: std::lock_guard and std::mutex as told by @Useless

class Foo 
{
 public:
 void bar() 
 {
   // Will grab the resource or wait until free
   ::boost::mutex::scoped_lock lock(m_mutex); 
   //Critical section

   // No need to unlock the lock will do that itself.
 }
private:
boost::mutex m_mutex;

}

this example was found here
http://developer-resource.blogspot.com/2009/01/boost-scoped-lock.html