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/* --------------------------------------------------------------------------- */
/* PthreadKey:                                                                 */
/* manages thread local storage                                                */
/* --------------------------------------------------------------------------- */

#ifndef PTHREAD_KEY_H
#define PTHREAD_KEY_H

#include "PthreadUtil.h"

namespace PinPthread 
{

    typedef std::map<pthread_key_t, void*>          pthread_tls_t;
    
    class PthreadTLS
    {
      public:
        void AddKey(pthread_key_t);
        bool RemoveKey(pthread_key_t);
        int SetData(pthread_key_t, void*);
        void* GetData(pthread_key_t);
      public:        
        pthread_tls_t tls;           // <key,data> pairs for one thread
    };

    typedef std::map<pthread_t, PthreadTLS*> pthreadtls_queue_t;
    typedef std::map<pthread_key_t, void(*)(void*)> pthread_keydestr_t;

    class PthreadTLSManager 
    {
       public:
        PthreadTLSManager();
        ~PthreadTLSManager();
       public:
        void AddThread(pthread_t);
        void KillThread(pthread_t);
        int AddKey(pthread_key_t*, void(*)(void*));
        int RemoveKey(pthread_key_t);
        int SetData(pthread_t, pthread_key_t, void*);
        void* GetData(pthread_t, pthread_key_t);
       private:
        PthreadTLS* GetTLS(pthread_t);
       private:
        pthread_key_t newkey;        // the value to assign to the next key
        pthreadtls_queue_t tls;      // thread local storage for each thread
        pthread_keydestr_t destr;    // destructor function for each key
    };
    
} // namespace PinPthread

#endif  // #ifndef PTHREAD_KEY_H