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#ifndef _SE_ENCLAVE_MNGR_H_
#define _SE_ENCLAVE_MNGR_H_

#include <list>

#include "arch.h"
#include "sgx_eid.h"
#include "se_thread.h"

class CEnclaveSim
{
public:
    CEnclaveSim(const secs_t* secs);
    virtual ~CEnclaveSim(void);

    // The following functions are declared virtual so that they can
    // be called from the tRTS instruction simulation functions.

    virtual sgx_enclave_id_t get_enclave_id() const;
    virtual secs_t* get_secs();

    virtual size_t get_pg_idx(const void* pgaddr) const;
    virtual bool add_page(const void* pgaddr, si_flags_t flags);
    virtual bool remove_page(const void* epc_lin_addr);
    virtual bool is_tcs_page(const void* pgaddr) const;

private:
    secs_t          m_secs;
    si_flags_t*     m_flags;        // memory managed by CEnclaveSim
    size_t          m_cpages;       // page count

    sgx_enclave_id_t    m_enclave_id;   // an unique Id for the enclave
    static uint32_t m_counter;      // enclave counter

    sgx_enclave_id_t gen_enclave_id(void);
    bool validate_pg_and_flags(const void* pgaddr, si_flags_t flags);

    CEnclaveSim(const CEnclaveSim& es);
    CEnclaveSim& operator=(const CEnclaveSim& es);
};


class CEnclaveMngr
{
public:
     
     // The factory method for CEnclaveMngr.
     //
     // Note: this factory is not thread-safe.

    static CEnclaveMngr* get_instance();
    ~CEnclaveMngr();

    void add(CEnclaveSim* ce);
    void remove(CEnclaveSim* ce);

    CEnclaveSim* get_enclave(const sgx_enclave_id_t id);
    CEnclaveSim* get_enclave(const secs_t* secs);
    CEnclaveSim* get_enclave(const void* base_addr);

private:
    std::list<CEnclaveSim*> m_enclave_list;

    // to protect the access to m_enclave_list
    se_mutex_t m_list_lock;

    CEnclaveMngr();
    CEnclaveMngr(const CEnclaveMngr& em);
    CEnclaveMngr& operator=(const CEnclaveMngr& em);
};

#endif