c++ - How to release heap memory of thread local storage -

c++ - How to release heap memory of thread local storage -

i have construction used thread local storage this:

namespace { typedef boost::unordered_map< std::string, std::vector<xxx> > yyy; boost::thread_specific_ptr<yyy> cache; void initcache() { //the first time called current thread. if (!cache.get()){ cache.reset(new yyy()); } } void clearcache() { if (cache.get()){ cache.reset(); } } }

and class object have been created main thread:

class { public: void f() { initcache(); //and example: insertintocache(); } ~a(){ clearcache();// <-- does/can ?? } }

multiple threads can access object(s) of a stored, example, in global container. each of these threads need phone call a::f() time time. create own re-create of cache on heap 1 time , , bring together when done jobs.

so question : going clean-up threads' memory? , how? give thanks you

there's no reason phone call clearcache().

once thread exits or thread_specific_ptr goes out of scope, cleanup function invoked. if don't pass cleanup function thread_specific_ptr's constructor, utilize delete.

c++ multithreading boost-thread thread-local thread-local-storage