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#ifdef __OBJC__
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#ifdef __OBJC__
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@interface as_t : base_t {
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@interface as_t : base_t {
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    @public
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    @public
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        /** Protected by asidlock. */
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        /** Protected by asidlock. */
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        link_t inactive_as_with_asid_link;
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        link_t inactive_as_with_asid_link;
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        /**
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         * Number of processors on wich is this address space active.
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         * Protected by asidlock.
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         */
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        count_t cpu_refcount;
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        /**
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         * Address space identifier.
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         * Constant on architectures that do not support ASIDs.
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         * Protected by asidlock.  
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         */
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        asid_t asid;
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        mutex_t lock;
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        mutex_t lock;
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        /** Number of references (i.e tasks that reference this as). */
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        /** Number of references (i.e tasks that reference this as). */
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        count_t refcount;
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        count_t refcount;
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        /** Number of processors on wich is this address space active. */
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        count_t cpu_refcount;
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        /** B+tree of address space areas. */
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        /** B+tree of address space areas. */
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        btree_t as_area_btree;
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        btree_t as_area_btree;
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        /**
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         *  Address space identifier.
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         *  Constant on architectures that do not support ASIDs.
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         */
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        asid_t asid;
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        /** Non-generic content. */
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        /** Non-generic content. */
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        as_genarch_t genarch;
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        as_genarch_t genarch;
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        /** Architecture specific content. */
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        /** Architecture specific content. */
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        as_arch_t arch;
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        as_arch_t arch;
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 * set up during system initialization.
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 * set up during system initialization.
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 */
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 */
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typedef struct as {
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typedef struct as {
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    /** Protected by asidlock. */
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    /** Protected by asidlock. */
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    link_t inactive_as_with_asid_link;
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    link_t inactive_as_with_asid_link;
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    /**
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     * Number of processors on wich is this address space active.
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     * Protected by asidlock.
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     */
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    count_t cpu_refcount;
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    /**
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     * Address space identifier.
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     * Constant on architectures that do not support ASIDs.
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     * Protected by asidlock.
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     */
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    asid_t asid;
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    mutex_t lock;
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    mutex_t lock;
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    /** Number of references (i.e tasks that reference this as). */
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    /** Number of references (i.e tasks that reference this as). */
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    count_t refcount;
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    count_t refcount;
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    /** Number of processors on wich is this address space active. */
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    count_t cpu_refcount;
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    /** B+tree of address space areas. */
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    /** B+tree of address space areas. */
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    btree_t as_area_btree;
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    btree_t as_area_btree;
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    /**
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     *  Address space identifier.
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     *  Constant on architectures that do not support ASIDs.
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     */
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    asid_t asid;
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    /** Non-generic content. */
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    /** Non-generic content. */
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    as_genarch_t genarch;
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    as_genarch_t genarch;
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    /** Architecture specific content. */
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    /** Architecture specific content. */
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    as_arch_t arch;
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    as_arch_t arch;
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#ifndef __OBJC__
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#ifndef __OBJC__
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extern as_operations_t *as_operations;
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extern as_operations_t *as_operations;
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#endif
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#endif
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SPINLOCK_EXTERN(inactive_as_with_asid_lock);
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extern link_t inactive_as_with_asid_head;
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extern link_t inactive_as_with_asid_head;
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extern void as_init(void);
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extern void as_init(void);
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extern as_t *as_create(int flags);
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extern as_t *as_create(int flags);