Re: [Boost-users] Boost shared pointers, PThreads and void* casts

Thank you two for the help. On 12/18/07, Zeljko Vrba wrote:

On Tue, Dec 18, 2007 at 10:28:37AM -0500, Andrew Holden wrote: He might just allocate the shared_ptr on the heap (the dynamic memory allocation will be anyway cheaper than thread creation):

void *thread(void *ptr) { shared_ptr<X> *_p = static_cast(ptr); shared_ptr<X> p = *_p; delete _p; ... }

void creator() { ... pthread_create(&thrid, 0, thread, new shared_ptr<X>(orig_ptr)); ... }

Ok. This is how my code structure looks: ---------------------------- typedef shared_ptr<MyClass> pMyClass; void* MyClass::actionThread(void *objectPointer) { pMyClass * _obj = static_cast(objectPointer); pMyClass obj = *_obj; obj->action(false); delete _obj; } void MyClass::action(bool threaded) { if (threaded) { pthread_t tid; pthread_create(&tid, 0, actionThread, new pMyClass(this)) } else { //TODO: actually perform the action } } ---------------------------- When calling an instance->action(false) it works correctly. When calling instance->action(true) it sometimes segfaults. So i'm not sure i interpreted your code sample correctly. Do i need to use enable_shared_from_this? Or do i have to avoid using "this" (orig_ptr in your code) somehow maybe? Thanks in advance! -- Saludos, Bruno González _______________________________________________ Msn/Jabber: stenyak AT gmail.com ICQ: 153709484 http://www.stenyak.com