Re: [Boost-users] boost:shared_ptr destructor, SIGBUS, MIPS 64

Subject: Re: [Boost-users] boost:shared_ptr destructor, SIGBUS, MIPS 64
From: Peter Dimov (pdimov_at_[hidden])
Date: 2012-01-04 17:08:55

sumanth krishna wrote:
> C is a singleton class and from the logs i can see that the other threads 
> have exited before the destructor of C is called.

Well, in this case you should try to isolate a complete program that crashes 
and post it here.

> Even if the thread calls c->getList after ~C is executed, then also it 
> should not cause a problem because until all the instances are deleted and 
> reference count of the shared pointers reaches zero the memory for the 
> allocated class should not be deleted.

No, destroying a shared_ptr in one thread and copying it from another 
doesn't work. Even if it did, destroying a std::list in one thread and 
iterating over it from another doesn't work either. If you access an object 
from more than one thread, all accesses must be read (non-modifying) 
accesses.